Entries |
Document | Title | Date |
20080204727 | Lens meter - A lens meter capable of obtaining optical characteristics of a lens with high stability and accuracy has a measurement optical system including a target panel having measurement targets having first measurement targets and second measurement targets and a photodetector which photo-receives a measurement light bundle, a calculation means which calculates the optical characteristics including first calculation means which calculates first optical characteristics based on a detection result of the first measurement targets by the photodetector and second calculation means which calculates second optical characteristics based on a detection result of the first and second measurement targets, and display control means which displays the second optical characteristics as the optical characteristics of the lens if the calculation result by the first calculation means or the detection result by the photodetector satisfies a predetermined condition and displays the first optical characteristics if the predetermined condition is not satisfied. | 08-28-2008 |
20080212083 | OPTICAL IMAGING ARRANGEMENT - There is provided an optical imaging arrangement comprising: a mask unit comprising a pattern, a substrate unit comprising a substrate, an optical projection unit comprising a group of optical element units, the optical projection unit being adapted to transfer an image of the pattern onto the substrate, a first imaging arrangement component, the first imaging arrangement component being a component of one of the optical element units, a second imaging arrangement component, the second imaging arrangement component being different from the first imaging arrangement component and being a component of one of the mask unit, the optical projection unit and the substrate unit, and a metrology arrangement. The metrology arrangement captures a spatial relationship between the first imaging arrangement component and the second imaging arrangement component. The metrology arrangement comprises a reference element, the reference element being mechanically connected directly to the first imaging arrangement component. | 09-04-2008 |
20080291433 | Lens Meter - The present invention has an object to provides a lens meter which readily enables alignment of a progressive lens even by an inexperienced examiner. A lens meter of the present invention comprises a lens meter for measuring optical characteristics of a target lens to be measured, comprising: a measurement optical system including a light source which projects a measurement light beam to the target lens and a light receiving sensor which receives the measurement light beam having passed through the target lens; an arithmetic part which obtains the optical characteristics of the target lens based on a received result by the light receiving snsor; mode selecting means which selects between a single focal lens measurement mode and a progressive lens measurement mode; detecting means which detects a direction and a degree of displacement of a current measurement position from a near vision portion of a progressive lens which is the target lens based on the optical characteristics obtained at a plurality of positions when the progressive lens measurement mode is selected and alignment is made to bring the measurement position into the near vision portion; a display which displays an alignment screen; and a display control part which causes the display, based on a detection result by the detection means, to display a guide mark indicatin a direction in which and an amount by which the lens must be moved to bring the measurement position into the near vision portion. | 11-27-2008 |
20080297775 | Method and Device for Analysing the Imaging Behavior of an Optical Imaging Element - The invention relates to a method for analyzing the imaging behavior of a first optical imaging element, whereby an object is imaged into an image plane by a second optical imaging element and light in the image plane is detected in a spatially resolved manner, the two optical imaging elements differing in terms of at least one imaging characteristic. Values are determined for the intensity and for at least one second characteristic of the light, said values being then stored in image points, and processed in an emulation step. An emulation image is produced, emulating the imaging of the object by the first optical imaging element, taking into account the influence of the second characteristic. A series of images is produced by dividing a range of values of the second characteristic into subdomains, associating an image with each subdomain, and associating the corresponding intensity value with the image points of each image, in case the value of the second characteristic, associated with the image point, falls in the subdomain associated with the respective image. Otherwise, a pre-determined intensity value is associated therewith. The series of images is converted into a series of intermediate images in the emulation step. A constant value of the second characteristic is used in the emulation for each intermediate image, said value originating from the respective subdomain and differing from the values of the second characteristic for the other intermediate images. The intermediate images are then combined to form an emulation image. | 12-04-2008 |
20090021725 | Lens Meter - A lens meter for measuring optical characteristics of a lens to be measured includes a measurement optical system including a light source which projects a measurement light beam to the lens and a light receiving sensor which receives the measurement light beam having passed through the lens; an arithmetic part which obtains optical characteristic distribution of a predetermined measurement region of the lens based on a light reception result of the light receiving sensor; near-vision-portion determination means which determines whether a near vision portion of the lens is present in the measurement region based on the optical characteristic distribution in the measurement region; and detection means which detects presence of a non-optical region in addition to an optical region of the lens in the measurement region based on the light reception result of the light receiving sensor; the arithmetic part obtains additional power of the lens based on the optical characteristic distribution of the optical region in the measurement region when the near-vision-portion determination means does not determine the presence of the near vision portion in the measurement region and the detection means detects the presence of the non-optical region in the measurement region. | 01-22-2009 |
20090021726 | DEVICE AND METHOD FOR THE OPTICAL MEASUREMENT OF AN OPTICAL SYSTEM BY USING AN IMMERSION FLUID - A device for the optical measurement of an optical system, in particular an optical imaging system, is provided. The device includes at least one test optics component arranged on an object side or an image side of the optical system. An immersion fluid is adjacent to at least one of the test optics components. A container for use in this device, a microlithography projection exposure machine equipped with this device, and a method which can be carried out with the aid of this device are also provided. The device and method provide for optical measurement of microlithography projection objectives with high numerical apertures by using wavefront detection with shearing or point diffraction interferometry, or a Moiré measuring technique. | 01-22-2009 |
20090027661 | Systems and Methods for Testing Intraocular Lenses - Systems and their methods of use for testing intraocular lenses outside of the lens capsule. In some embodiments the systems measure an accommodative response based on a force applied to the intraocular lens. | 01-29-2009 |
20090033920 | METHOD OF MEASURING DIFFRACTIVE LENSES - A method for measuring the optical properties of multifocal ophthalmic lenses. Collimated light is passed through an ophthalmic lens and onto an array of lenslets. Light exiting the array of lenslets is detected by a sensor. Blurred spots and/or double spots may represent diffractive zones of the wavefront. A centroid of the spot or a brighter of two spots may be used to determine the lateral position of the spot. Theoretical calculations, laboratory measurements, clinical measurements and experimental image spots may be generated, compared and cross-checked to determine a monofocal equivalent lens. An MTF may be used to evaluate and compare a diffractive lens and a monofocal equivalent lens. | 02-05-2009 |
20090040510 | METHOD AND APPARATUS AS WELL AS CORRECTIVE OPTICAL SYSTEM FOR EVALUATING RESTORATION-PREMISED LENS - The evaluating apparatus evaluates a restoration-premised lens which is employed in an image forming system that converts an optical image into an electronic image and then enforces a restoration processing on the electronic image in order to obtain a sharp image, is actually manufactured based on such design as premised on the restoration processing. The evaluating apparatus includes an evaluating corrective optical system, measuring section and evaluating section. The evaluating corrective optical system, when it is combined with a lens manufactured just as designed, forms a sharp optical image. The measuring section measures the optical characteristics of a composite optical system provided by combining together the evaluating corrective optical system and the manufactured lens. The evaluating section evaluates the manufactured lens according to measured results provided by measuring section. | 02-12-2009 |
20090059210 | Simple matrix method for stray-light correction in imaging instruments - A simple matrix method and computer program product for stray-light correction in imaging instruments is provided. The stray-light correction method includes receiving raw signals from an imaging instrument and characterizing the imaging instrument for a set of point spread functions. For high resolution imaging instruments, the raw signals may be compressed to reduce the size of the correction matrix. Based on stray-light distribution functions derived from the point spread functions, a correction matrix is derived. This fast correction is performed by a matrix multiplication to the measured raw signals, and may reduce stray-light errors by more than one order of magnitude. Using the stray-light corrected instrument, significant reductions may be made in overall measurement uncertainties in radiometry, colorimetry, photometry and other applications. Because the PSFs may include other types of undesired responses, the stray-light correction also eliminates other types of errors, e.g., interreflection between a CCD and the detector window. | 03-05-2009 |
20090135410 | Bubble reduction system - An ophthalmic device forming system includes an inspection station configured to receive a plurality of ophthalmic devices, a fluid supply fluidly connected to the inspection station, the fluid supply containing a working fluid, and a heat source fluidly connected between the fluid supply and the inspection station. The heat source includes a housing, a transfer element, and a low pressure gas region defined by the housing adjacent to the transfer element. | 05-28-2009 |
20090141268 | APPARATUS FOR MEASURING STRAY LIGHT IN LENS MODULE - An apparatus for measuring stray light in a lens module includes a light source, an image sensor, an object distance adjusting unit, and an object distance measuring device. The light source is disposed at an object side of the lens module for emitting light to the lens module. The image sensor is disposed at an image side of the lens module for measuring an intensity of stray light coming into the lens module. The object distance adjusting unit includes an opaque barrier defining a slit therein, and a laser aligned with the slit, the laser being configured for emitting a laser light beam through the slit thereby forming a light spot serving as an object. The object distance measuring device is configured for measuring an object distance. The opaque barrier of the object distance adjusting unit is movable relative to the wavefront sensor so as to adjust the object distance. | 06-04-2009 |
20090147245 | SYSTEM AND METHOD FOR MEASURING OPTICAL RESOLUTION OF LENS - A system for measuring optical resolution of a lens, is provided. The system includes a chart, an image sensor, a lens tray, and a processor. The chart has a frame pattern and a number of line pair patterns arranged in the frame pattern. The image sensor is center-aligned with the frame pattern of the chart and configured for capturing an image of the chart. The lens tray is movable relative to the chart for moving the lens to be center-aligned with the frame pattern of the chart and the image sensor based on the frame pattern in the image of the chart. The processor is configured for analyzing the image of the line pair patterns to obtain an optical resolution of the lens. | 06-11-2009 |
20090207403 | Method of measuring front and back surfaces of target object - A method of measuring a front surface profile and a back surface profile of a target object includes: mounting the target object in such a posture that a first measuring surface (front surface) is measurable by a probe; first measuring a contour of the target object; measuring the first measuring surface of the target object; reversing the target object; second measuring the contour of the target object with the reversed posture of the target object being maintained; obtaining a measurement position of a second measuring surface by comparison of contour data obtained through the first and second measuring of the contour, the measurement position of the second measuring surface corresponding to a measurement position of the first measuring surface at which the measuring of the first measuring surface is conducted; and measuring a profile of the second measuring surface along the obtained measurement position of the second measuring surface. | 08-20-2009 |
20090219517 | Method and apparatus for inverting a flexible molding - A method for providing a flexible molding, in particular an ophthalmic lens such as a contact lens, in a predetermined orientation, comprises the steps of
| 09-03-2009 |
20090244525 | Lens holder and lens shape measuring apparatus - A lens holder includes a lens holding member having a mounting shaft portion and configured to hold a lens provided with at least one hole mounting a fitting for a rimless frame or a dummy lens provided with at least one hole, a main body including an opened bottom surface, a shaft holding cylinder provided in the main body and configured to hold the mounting shaft portion of the lens holding member, a clamping member configured to clamp the shaft holding cylinder to the mounting shaft portion of the lens holding member, and at least one confirming hole provided in the main body. When the shaft holding cylinder is clamped to the mounting shaft portion of the lens holding member by the clamping member, the confirming hole is configured to look at the hole of the lens or the dummy lens. | 10-01-2009 |
20090251689 | LENS MEASURING DEVICE AND METHOD APPLIED THEREIN - A lens measuring device and method applied therein. The lens measuring device includes a light source, a first polarizer, a second polarizer, and an image analysis module. The method includes enabling the light source to orderly pass through the first polarizer, a lens to be measured, and the second polarizer to generate a light beam to be measured, and then enabling the image analysis module to analyze image-related information of the light beam to be measured, consequently deducing the structural center and energy distribution of the lens to be measured, and then further analyzing errors in polarity and skewness of the lens to be measured. By applying a common light source, the method is spared complicated correction that is otherwise required when a conventional collimating laser light source is applied, and the method can also easily and simultaneously test a plurality of lenses to be measured. | 10-08-2009 |
20090257049 | DEVICE AND METHOD FOR THE OPTICAL MEASUREMENT OF AN OPTICAL SYSTEM BY USING AN IMMERSION FLUID - A device for the optical measurement of an optical system, in particular an optical imaging system, is provided. The device includes at least one test optics component arranged on an object side or an image side of the optical system. An immersion fluid is adjacent to at least one of the test optics components. A container for use in this device, a microlithography projection exposure machine equipped with this device, and a method which can be carried out with the aid of this device are also provided. The device and method provide for optical measurement of microlithography projection objectives with high numerical apertures by using wavefront detection with shearing or point diffraction interferometry, or a Moiré measuring technique. | 10-15-2009 |
20090268199 | LENS SHAPE MEASURING APPARATUS AND THE METHOD THEREOF, MANUFACTURING METHOD OF SPECTACLE LENS, AND MANUFACTURING METHOD OF SPECTACLES - A lens shape measuring apparatus measures a peripheral shape of a lens in order to measure the peripheral shape of the lens accurately according to a non-contact technique. The lens shape measuring apparatus includes: a lens holding mechanism section for holding the lens with the holding axis from the side of a lens surface; and a laser displacement meter for measuring a lens peripheral shape by irradiating a laser beam to the periphery of the lens and receiving a reflected light thereof. The laser displacement meter is installed such that a light projecting section for projecting a laser beam and a light receiving section for receiving a laser beam are aligned in a direction perpendicular to an axis line of the holding axis. The lens shape measuring apparatus causes the lens holding mechanism section to change a lens holding position without changing the axial direction of the holding axis, and causes the laser displacement meter to irradiate a laser beam to the lens periphery at each lens holding position and to measure the peripheral shape of the lens. | 10-29-2009 |
20090279075 | SYSTEM AND METHOD FOR MEASURING LENGTH OF CAMERA LENS - A system for measuring a total track length of a telescopic lens includes a testing chart, a light source, a processor, a display screen and a range finder. The lens and an image sensor are received in a holder. The testing chart has a frame pattern and a plurality of line pair patterns. The testing chart faces and aligns with the image sensor for allowing the image sensor to capture an image of the testing chart. The processor analyzes the image generated by the image sensor, so as to obtain a modulation transfer function value representative of a precision focal position of the lens. The range finder measures a first distance between the image sensor and the range finder, a second distance between the lens and the range finder, and calculates a distance difference between the first and second distances to obtain the total track length of the lens. | 11-12-2009 |
20090303465 | MULTI-IMAGING AUTOMATED INSPECTION METHODS AND SYSTEMS FOR WET OPHTHALMIC LENSES - A method for inspecting lenses, especially wet contact lenses provided in a volume of liquid inside a container is described. A first image of the lens at a first position in the container is obtained, the lens then being moved to a second position within the container where a second image is obtained. A computer algorithm processes the first and second images to compare features that have moved with the lens to those features that have not moved with the lens whereby lenses are rejected if a feature has moved with the lens but is not a normal feature of the lens. | 12-10-2009 |
20100026993 | METHOD AND APPARATUS FOR MANUFACTURING DISPLAY DEVICE - Provided are a method and apparatus for manufacturing a display device, which can ensure precise alignment and attachment of a lenticular sheet onto a display panel. The method includes sequentially stacking a display panel and a lenticular sheet on a stage, irradiating light that is incident in parallel toward the display panel and the lenticular sheet from below the display panel, detecting the light that has passed through the display panel and the lenticular sheet, and determining an axial direction of a columnar lens formed on the lenticular sheet. | 02-04-2010 |
20100053600 | Optical Condition Design Method for a Compound-Eye Imaging Device - An imaginary object plane is set in front of an imaging device body (plane setting step). A part of optical conditions of optical lenses are changed as variables, and positions of points (pixel observation points) on the imaginary object plane where lights coming from pixels of a solid-state imaging element and back-projected through the optical lenses are calculated (pixel observation point calculating step). The dispersion in position of the calculated pixel observation points is evaluated (evaluating step). Finally, a set of values of the variables giving maximum evaluated dispersion of the calculated pixel observation points is determined as optimum optical condition of the optical lenses (condition determining step). This reduces the number of pixels which image the same portions of the target object, making it possible to reduce portions of the same image information in multiple unit images, and to stably obtain a reconstructed image having a high definition. | 03-04-2010 |
20100060882 | LENS MODULE DISTORTION MEASURING SYSTEM AND METHOD - A lens module distortion measuring system configured to measure the distortion of a lens module including: a light source configured to emit light rays; a diffusing panel configured to diffuse the light rays; a substantially opaque shielding plate beneath the diffusing panel, the shielding plate defining a regular matrix of light-passing holes capable of allowing some of the diffused light rays to pass therethrough; an image capturing device configured to capture a image of the shielding plate as viewed through the lens module, the image comprising an array of light spots corresponding to the light-passing holes; and a computing unit electrically connected to the image capturing device and configured to analyze the light spots of the image and thereby determine the distortion of the lens module. | 03-11-2010 |
20100073668 | LENS SCREENING DEVICE - An lens screening device for controlling diameters of lenses within a range from a lower threshold to a upper threshold. The lens screening device includes a number of connecting poles and two screening plates. Each of the screening plates includes a tray and a scraper slidably disposed on the tray and configure for scraping the tray. The tray defines a number of through holes of same diameter therein. The diameter of the through holes in an upper screening plate is larger than that of the through holes in a lower screening plate. | 03-25-2010 |
20100085559 | METHOD FOR MEASURING OPTICAL CHARACTERISTICS OF DIFFRACTION OPTICAL ELEMENT AND APPARATUS FOR MEASURING OPTICAL CHARACTERISTICS OF DIFFRACTION OPTICAL ELEMENT - [Object] A measurement method and an evaluating apparatus are provided which are capable of easily and accurately evaluating the light amount of a spot beam, the diffraction efficiency, and the intensity distribution in the optical axis direction by detecting even a weak diffracted beam in an arbitrary wavelength range converged by a diffraction optical element as an imaging lens. | 04-08-2010 |
20100134789 | DEVICE AND A METHOD FOR MEASURING A CAMBER GEOMETRICAL CHARACTERISTIC OF AN OPHTHALMIC LENS - A device for measuring at least one camber geometrical characteristic of an ophthalmic lens provided on at least one of its faces with at least one position-identifying mark, the device including a support for the ophthalmic lens, and on opposite sides of the support, firstly lighting element for lighting the ophthalmic lens along at least two different lighting directions, and secondly acquisition and analysis element for acquiring and analyzing the light transmitted by the ophthalmic lens, the analysis element being adapted to identify shadows of the mark when lighted in the at least two lighting directions, and to deduce from their positions a measured value for the camber geometrical characteristic of the ophthalmic lens. | 06-03-2010 |
20100157289 | LENS INSPECTION SYSTEM USING PHASE CONTRAST IMAGING - The present invention relates to an inspection system for the automatic inspection of ophthalmic lenses, preferably in an automated lens manufacturing line. The inspection system provides a phase contrast imaging unit and an inspection method using said phase contrast imaging unit designed to recognize defective lenses with an improved degree of reliability but that does not falsely sort out perfect lenses. | 06-24-2010 |
20100165329 | LENS-TESTING APPARATUS AND LENS-TESTING METHOD HAVING A PLURALITY OF COMBINATIONS OF OBJECT DISTANCES - One embodiment of the invention provides a lens-testing apparatus being used for testing a lens device. The lens-testing apparatus comprises a light module, at least one first and second image sensors, and at least one image sensor module. The light module generates a patterned light beam passing the lens device. The first and second image sensors receive first and second portions of the patterned light beam; the first image sensor is disposed between the second image sensor and the lens device. The image sensor module receives a substantially parallel third portion of the patterned light beam, and comprises a third image sensor and a collimator. The third portion of the patterned light beam is focused onto the third image sensor by the collimator; the distance between the first image sensor and the lens device is smaller than the distance between the second image sensor and the lens device. | 07-01-2010 |
20100165330 | Method for machining and estimating an optical lens designed as a smei-finished product - The invention relates to a method for machining and estimating an optical lens which is designed as a semi-finished product, with a pre-finished form of a first side and a second side to be machined, in which a pre-specified form of a surface of the second side to be machined is estimated, wherein prior to estimating the pre-specified form of the surface of the second side, an actual form of the surface of the first side is measured using measuring means and is incorporated into the estimation of the pre-specified form of the surface of the second side. | 07-01-2010 |
20100195093 | CHARACTERIZATION OF OPTICAL SYSTEMS - An instrument and method is for characterizing the optical properties of an optical system, such as a lens, another optical device or the human eye, over an optical surface of the optical system. In one example, an incident beam is scanned over the surface of a lens to generate an emergent beam that is divided by a beam-splitter into two portions that are directed to respective two-dimensional detector arrays located at different optical distances from the lens. The detector arrays output the lateral coordinates of the points of incidence of the respective emergent beam portions so that the angle of emergent beam with respect to the optical axis or incident beam can be accurately determined. Determining the variation in the angle of the emergent beam over the surface of the lens allows many important optical characteristics of the lens to be characterized and mapped onto to the surface of the lens. | 08-05-2010 |
20100245804 | METHOD OF MEASURING AMOUNT OF ECCENTRICITY - An optical element to be measured is irradiated with the light which has passed through an indicator, thereby to form an indicator image on an image pick-up surface. Maximum peak coordinates are specified and stored as a position of the indicator image relating to the first surface. Whether the second largest peak may be specified or not is determined. In case that this result is NO, the maximum peak indicator image is deleted, and maximum peak coordinates are specified again and stored as a position of the indicator image relating to the second surface. | 09-30-2010 |
20100290036 | Calibration Apparatus And Method For Optical System Assembly - A calibration apparatus and method for optical system assembly is provided, applicable to a finite conjugate optical system to determine the optimal image-forming positions of the light source and the focus object lens of the finite conjugate optical system. The apparatus includes an external light source, a low magnification image-forming optical system, an electrical control system and a monitor. When the parallel beam generated by the external light source is parallel to the optical axis of the finite conjugate optical system, the low magnification image-forming optical system is used to magnify the two focal spots formed by the external light source and the internal light source of the finite conjugate optical system to be calibrated. Finally, by adjusting the related position of the focus object lens or the internal light source of the finite conjugate optical system, the optimal relative positions between the light source and the focus object lens of the finite conjugate optical system can be found. The calibration apparatus of the present invention has the advantages of simple structure, easy assemble and setup, high precision assembly and low cost, as well as the capability to perform optimal calibration of the relative position of the focus object lens and the light source of each individual finite conjugate optical system. | 11-18-2010 |
20100309458 | ASPHERE MEASUREMENT METHOD AND APPARATUS - Disclosed is an asphere measurement method capable of measuring the surface deviations and the surface tilts with high accuracy even when an asphere to be measured does not have the wedge-shaped flat portion. | 12-09-2010 |
20110026014 | METHODS AND SYSTEMS FOR CALIBRATING AN ADJUSTABLE LENS - A system for calculating intrinsic properties and an entry pupil location of an adjustable camera lens is disclosed. The system includes a camera and a calibration target. Methods for calculating intrinsic properties and an entry pupil location of an adjustable camera lens are also disclosed. | 02-03-2011 |
20110069304 | DEVICE FOR DEMONSTRATING AND TESTING THE COSMETIC QUALITIES OF AN OPHTHALMIC LENS - A device is provided for demonstrating and testing the cosmetic qualities of an ophthalmic lens by viewing, the device comprising both a bearing wall ( | 03-24-2011 |
20110102775 | Ophthalmic lens scanner - An ophthalmic lens scanner includes an inspection platform configured to receive an ophthalmic lens thereon. A camera is spaced apart from the inspection platform and is arranged to, in response to an activation signal, capture an image of the ophthalmic lens. A light source is spaced apart from the inspection platform and is configured to emit light when the camera is activated to capture an image of the ophthalmic lens. The inspection platform is located between the camera and the light source. A first Fresnel lens is located between the inspection platform and the camera. A second Fresnel lens is located between the inspection platform and the light source. The ophthalmic lens scanner may be incorporated in an ophthalmic lens scanner system that includes a computing device and a display device. | 05-05-2011 |
20110255079 | AUXILIARY DEVICE FOR HELPING TO MEASURE COAXIALITY OF LENSES - An auxiliary device for measuring the coaxiality of a lens. The auxiliary device includes a cylindrical main body having a first surface and a flat second surface facing away the first surface, and a protrusion formed on the first surface and defining a reference convex surface. The second surface of the main body defines a position part. The position part is coaxial with the reference convex surface and configured to engage with the lens to measure the coaxiality of the lens. | 10-20-2011 |
20120069327 | METHOD FOR MEASURING OPTICAL CHARACTERISTICS OF DIFFRACTION OPTICAL ELEMENT AND APPARATUS FOR MEASURING OPTICAL CHARACTERISTICS OF DIFFRACTION OPTICAL ELEMENT - A measurement method and an evaluating apparatus are provided which are capable of easily and accurately evaluating the light amount of a spot beam, the diffraction efficiency, and the intensity distribution in the optical axis direction by detecting even a weak diffracted beam in an arbitrary wavelength range converged by a diffraction optical element as an imaging lens. | 03-22-2012 |
20120081697 | LENS METER - A lens meter comprises: a measurement optical system including a light source, a measurement target plate, a light receiving sensor, a lens table having an opening where a measurement optical axis of the measurement optical system passes; a frame support member including a frame support plate that contacts a left and right rim of a spectacle frame, and the frame support plate moved toward the lens table by a guide mechanism. The frame support member further including: a cutout portion in the frame support plate that allow the lens, placed on the lens table, to measure a point near an edge of the lens, the edge located on the frame support plate side. A pad contacts and prevents the rim from entering the cutout portion, the pad provided in at least a part of the cutout portion; and a pad moving mechanism to move the pad from the contact surface. | 04-05-2012 |
20120092652 | LENS MODULE TESING APPARATUS - An apparatus for testing a lens module includes a light source, a recording element, and an analyzing device. The lens module includes an actuator and a barrel. The light source emits a light beam towards the barrel. The light beam is reflected by the barrel and forms a light spot on the recording element. The recording element records a position of the light spot. The analyzing device calculates a distance between the position of the light spot and a reference position, compares the distance with a predetermined value, and determines whether the distance is larger than the predetermined value. If the distance is less than or equal to the predetermined value, the analyzing device determines that the lens module is satisfactory. If the distance is larger than the predetermined value, the analyzing device determines that the lens module is unsatisfactory. | 04-19-2012 |
20120140209 | METHOD FOR MEASURING OPTICAL CHARACTERISTICS OF DIFFRACTION OPTICAL ELEMENT AND APPARATUS FOR MEASURING OPTICAL CHARACTERISTICS OF DIFFRACTION OPTICAL ELEMENT - A measurement method and an evaluating apparatus are provided which accurately evaluate the light amount of a spot beam, the diffraction efficiency, and the intensity distribution in the optical axis direction by detecting even a weak diffracted beam in an arbitrary wavelength range converged by a diffraction optical element as an imaging lens. Light emitted from a white light source passes through a wavelength band-pass filter and is diaphragmed by a pinhole slit. The resultant light is paralleled by a collimator lens and enters a diffraction optical element as an imaging lens. The light getting out from the diffraction optical element is converged to be a spot beam, is magnified by a microscope | 06-07-2012 |
20120170027 | EXTERNAL LIGHT GLARE ASSESSMENT DEVICE, LINE OF SIGHT DETECTION DEVICE AND EXTERNAL LIGHT GLARE ASSESSMENT METHOD - Disclosed are an ambient light reflection determination apparatus and an ambient light reflection determination method enabling to determine reflection without using an edge and even in a case where luminance of a reflection generating part in eyeglasses is low. In a reflection determination apparatus ( | 07-05-2012 |
20120200847 | PROTECTION FACTOR RATING SYSTEM FOR PROTECTIVE EYEWEAR - A method of rating eyewear includes providing eyewear to be rated, measuring a physical property of the eyewear selected from a group that includes ultraviolet radiation absorption, blue light radiation absorption, infrared radiation absorption, and light blocking capability, transforming the physical property into a rating value, and informing a prospective consumer of the rating value. | 08-09-2012 |
20120224172 | Optical components for use in measuring projection lens distortion or focus of an optical imaging system that images a substrate - New and useful optical components are provided, for use in measuring projection lens characteristics of an optical imaging system that images a substrate. The optical components comprise an array of full NA imagers located at the substrate plane, and a relay system for imaging the imagers to a detector that is remote from the substrate. | 09-06-2012 |
20120250009 | OPTICAL CHARACTERISTIC MEASUREMENT APPARATUS - An optical characteristic measurement apparatus acquires a measurement value pertaining to an image characteristic of an optical system to be tested on a plurality of evaluation planes, and measures an optical characteristic, comprising a measurement value correction unit correcting a measurement value pertaining to a width or a light intensity of one of a line spread distribution and a point spread distribution of a beam, on the evaluation planes, wherein: in case where the measurement value pertains to the width, the image plane is regarded as an evaluation reference plane, and the measurement value correction unit outputs a corrected value; in case where the measurement value pertains to the light intensity, the image plane is regarded as an evaluation reference plane, and the measurement value correction unit also outputs a corrected value; and the optical characteristic of the optical system to be tested is measured based on the corrected value. | 10-04-2012 |
20120300195 | METHOD AND APPARATUS FOR SETTING AN ILLUMINATION OPTICAL UNIT - A method for setting an illumination optical unit involves determining an actual value of an intensity-weighted illumination parameter of the illumination optical unit for multiple field points and for multiple illumination angles. The influence of a deformation of at least one of the optical surfaces of the illumination optical unit on the at least one illumination parameter is then determined. A desired value of the illumination parameter is then predefined. A desired form of the at least one optical surface is determined so that the actual value of the illumination parameter corresponds to the desired value of the illumination parameter within predefined limits. Finally, the optical surface is deformed with the aid of at least one actuator so that an actual form of the optical surface corresponds to the desired form. | 11-29-2012 |
20120300196 | METHOD OF VERIFYING PERFORMANCE OF AN OPTICAL MEASUREMENT INSTRUMENT WITH A MODEL EYE AND AN OPTICAL MEASUREMENT INSTRUMENT EMPLOYING SUCH A METHOD - A method of compensating for misalignment between an optical measurement instrument and a model eye includes: receiving a light beam from the model eye at the optical measurement instrument; producing image data, including light spot data for a plurality of light spots, from the received light beam; determining an observed location of a corneal reflex from the model eye within an image representing the image data; and determining an angle of misalignment between an axis normal to the front surface of the model eye and the optical axis of the optical measurement instrument from the observed location of the corneal reflex within the image. | 11-29-2012 |
20130027691 | WAVEFRONT ABERRATION MEASURING APPARATUS - A wavefront aberration measuring apparatus comprising: an illumination optical system provided to an incident side of a test lens; and a measuring optical system provided to an exit side of the test lens, the illumination optical system including an aperture stop capable of being opened and closed, and the illumination optical system being movable along an optical axis of the illumination optical system so as to adjust positions of the aperture stop and an entrance pupil of the test lens to have an optically conjugate relation with each other. Accordingly, it becomes possible to provide a wavefront aberration measuring apparatus capable of suppressing errors in measured result. | 01-31-2013 |
20130077089 | COMPUTING DEVICE AND PRECISION TESTING METHOD OF OPTICAL LENS USING THE COMPUTING DEVICE - In a precision testing method of an optical lens using a computing device, the computing device is connected to an imaging system. The computing device controls the imaging system to generate an image of an object according to light rays reflected from the object and collected by the optical lens. A dimension of the object is measured from the image. A maximum value and a minimum value of the dimension of the object are determined. A difference between the maximum value and the minimum value is calculated. According to the difference, it is determined whether the optical lens agrees with a precision requirement. | 03-28-2013 |
20130094016 | METHOD AND APPARATUS FOR IDENTIFYING AND CORRECTING SPHERICAL ABERRATIONS IN A MICROSCOPE IMAGING BEAM PATH - A method and apparatus provide identification of a spherical error of a microscope imaging beam path in a context of microscopic imaging of a sample using a microscope having an objective. A coverslip that carries or covers the sample is arranged in the imaging beam path. A measurement beam is guided through the objective onto the sample in a decentered fashion that is outside an optical axis of the objective. The measurement beam is reflected at an interface of the coverslip with the sample and the reflected measurement beam is guided through the objective onto a detector. An intensity profile of the reflected measurement beam is detected with the detector and a presence of a spherical error from the intensity profile is determined qualitatively and/or quantitatively. | 04-18-2013 |
20130148110 | INSPECTING SYSTEM FOR LENS MODULE - An inspecting system for inspecting a lens module includes an inspection device; and a transmitting and loading device. The transmitting and loading device includes a grasping assembly, a supporting assembly, a sliding assembly loaded on the supporting assembly, and a control unit for controlling the grasping assembly and the sliding assembly. The grasping assembly is configured to clamp the lens module and to load the lens module on the sliding assembly, and the sliding assembly is adapted to transfer the lens module to a testing position of the inspection device. | 06-13-2013 |
20130148111 | METHOD AND APPARATUS FOR VISUALIZING A SIGNATURE MARK ON A SPECTACLE LENS - A method and an apparatus serve for visualizing a signature mark on a spectacle lens. in order to identify the signature mark, an illumination light beam is directed onto the spectacle lens, which impinges on the spectacle lens, after impinging on the spectacle lens is reflected at a retroreflector, impinges once again on the spectacle lens, and finally is passed as an observation light beam to a camera. A reflection region of the illumination light beam on the reflector is varied by means of a moved first optical element. | 06-13-2013 |
20130162983 | Lens Test Device And Method - A lens testing method is disclosed which comprises the following three steps. First, test a lens under test to obtain a testing characteristic value of the lens under test for a first object distance. Second, provide a correction datum. Third, calculate a simulated characteristic value for a second object distance according to the testing characteristic value and the correction datum. | 06-27-2013 |
20130162984 | METHOD AND APPARATUS FOR INSPECTING OPHTHALMIC LENS - An embodiment of a system and a method for inspecting a contact lens is provided. The illumination system illuminates the center zone and the peripheral zone of the contact lens when it is inside a cavity between a male mold and a female mold. The imaging optical system has two channels to capture two images or a composite single image to inspect the entire contact lens. The imaging optical system of the first channel has its entrance pupil far away from the mold tool. The camera of the first channel is used to capture the image of the center zone of the contact lens. The image optical system of the second channel is located outside the mold tool but its entrance pupil is located inside the mold tool or outside but substantially close to it. This enables the camera of the second channel to capture the image of the peripheral zone of the contact lens. | 06-27-2013 |
20130169955 | INSPECTION OF DEFECTS IN A CONTACT LENS - An embodiment of a method and system for inspecting clear and printed contact lenses is provided. A contact lens is inspected by illuminating the contact lens using bright-field illumination and low-angle dark-field illumination simultaneously, when the contact lens is disposed in a cavity between a male mold and a female mold. Further, the light emerging from the contact lens is received by an imaging optical system, and a camera uses the light received by the imaging optical system to capture an image of the contact lens. Further, a data processing system is configured to identify dark defects in the image that are in a first portion of a dynamic range of brightness, and to identify bright defects in the image that are in a second portion of the dynamic range of brightness. | 07-04-2013 |
20130201474 | Aberrometer for Measuring Parameters of a Lens Using Multiple Point Sources of Light - A device for measuring a lens, comprising apparatus for maintaining the lens at a location, at least a first point source, a second point source and a third point source, at least a first beam splitter, and a second beam splitter, and a wavefront sensor configured and arranged to receive a wavefront of light from the first source, a wavefront of light from the second source, and a wavefront of light from the third source after the light from each source has passed through the lens. The point sources and beam splitters are arranged such that the first source has a first object distance relative to the location, the second source has a second object distance relative to the location, the third source has a third object distance relative to the location, the first object distance, the second object distance, and the third object distance being different than one another. | 08-08-2013 |
20130208265 | METHOD AND APPARATUS FOR DETERMINING A THICKNESS PROFILE OF AN OPHTHALMIC LENS USING A SINGLE POINT THICKNESS AND REFRACTIVE INDEX MEASUREMENTS - This invention provides for a method and an ophthalmic lens thickness profile measuring apparatus. More specifically, the apparatus which is capable of measuring the ophthalmic lens in a precursor state after it is free-formed on an optic forming mandrel on which it can be formed. Additionally, the present invention can also allow for a design profile of the formed ophthalmic lens to be compared to the resulting free-formed ophthalmic lens to ensure it meets specified convergence design criteria. | 08-15-2013 |
20130235370 | METHOD OF DETERMINING AT LEAST ONE REFRACTION CHARACTERISTIC OF AN OPHTHALMIC LENS - Method of determining at least one refractive characteristic of an ophthalmic lens, includes:
| 09-12-2013 |
20130278924 | LENS MODULE TESTING DEVICE - A lens module testing device includes a base substrate, a supporting assembly, a bearing assembly, a receiving element, and an operation element. The supporting assembly is positioned on the base substrate and includes two supporting plates parallel with each other. One of the supporting plates defines an arc shaped slot. The bearing assembly is rotatably received between the two supporting plates. The receiving element is positioned on the bearing assembly and configured for receiving a lens module. The operation element penetrates the slot and connects to the bearing assembly; the bearing assembly is driven by the operation element to move along the slot and thereby adjusting the angle of the lens module which is presented to a light source. | 10-24-2013 |
20140016120 | PROGRESSIVE POWER LENS, METHOD OF DESIGNING PROGRESSIVE POWER LENS AND METHOD OF EVALUATING PROGRESSIVE POWER LENS - Improving the optical state of a progressive addition lens along a principal line of vision through which the line-of-sight of a wearer passes by making the displacement of a position at which an optical state becomes the best to be the same as the amount of inward movement of line-of-sight, when the wearer moves his line-of-sight from the front far distance to the front near distance. An expression OI01-16-2014 | |
20140043600 | OPTICAL TESTING METHOD AND SYSTEM FOR 3D DISPLAY PRODUCT - An optical testing method and system for 3D display products are disclosed, the method comprising: the 3D display product to be tested displaying white light and/or black light, a left eye lens and a right eye lens receiving white light signals and/or black light signals of left eye pixels and right eye pixels respectively and transmitting them to a data processor for processing, obtaining test results for brightness difference; the 3D display product to be tested displaying primary colors, the left eye lens and the right eye lens receiving light signals of the left eye pixels and the right eye pixels respectively and transmitting them to the data processor for processing, and obtaining test results for color difference. | 02-13-2014 |
20140071439 | METHOD AND APPARATUS FOR MEASURING THE REFLECTION PROPERTIES OF A REFLECTOR - The invention comprises a method and a device for measuring a reflector for radiation during the operation thereof, in which to determine the current reflection properties of the reflector in a number of at least one measurement points provided in the path of the radiation reflected by the reflector, the pattern of predetermined characteristics of the currently reflected radiation is measured and compared with a predetermined reference pattern, wherein the current geometrical properties of the reflector are inferred from the comparison and in the event of undesired geometrical properties, appropriate operational parameters of the reflector are modified. This method is preferably applied in trough collectors for solar power plants, in order to measure flexible concentrators arranged in a pressure cell, during their operation. | 03-13-2014 |
20140085627 | Process For Determining Position Parameters of a Manufactured Surface Relative To A Reference Surface - Determining position parameters defining relative position of manufactured derivable surface relative to reference surface, the process comprising: a step during which a nominal surface expressed in a nominal frame of reference and corresponding to the theoretical derivable surface to be manufactured with the nominal value of the position parameters defining the relative position of the nominal surface relative to the reference surface is provided, a step during which a measured surface of the manufactured derivable surface expressed in the nominal frame of reference is provided, a step (S | 03-27-2014 |
20140118725 | SUPPORTING DEVICE AND SYSTEM FOR DETECTING OPTICAL COUPLING LENS - A device for supporting an optical coupling lens for testing includes a platform, a first contacting member fixedly mounted on the platform, a second contacting member moveably mounted on the platform, and a pressing member positioned on the platform. The platform defines a supporting recess which is configured for supporting the optical coupling lens firmly and in a particular orientation during testing, by means of spring pressure. | 05-01-2014 |
20140132952 | DEVICE AND METHOD FOR DETECTING OPTICAL PERFORMANCE OF BEAM SHAPING ELEMENT - A detection apparatus and method for testing optical performance of beam shaping element used in ultraviolet lithography machine; The apparatus comprises visible wavelength laser and other optical units placed along the optical axis including, in order from laser side, (a) beam expander lens group, (b) beam splitter, (c) first far field imaging lens, (d) adjustable aperture or (e) CCD image sensor, (f) second far field imaging lens and (g) energy sensor. The detection apparatus is suitable be employed to detect the optical performance of beam shaping element working at any ultraviolet band, and provides the features of low cost, easy operation and quick measurement. | 05-15-2014 |
20140139825 | METHOD AND DEVICE OF MEASURING WAVEFRONT ABERRATION, METHOD OF MANUFACTURING OPTICAL SYSTEM, AND RECORDING MEDIUM - A wavefront aberration measuring method forms a plurality of spot images by causing light, which is transmitted through a test optical system, to be incident on a lenslet array, and measures positions of the spot images. Based on the measured positions of the spot images, a wavefront aberration of the test optical system is calculated. When the positions of the spot images are measured, at least one lenslet forming the lenslet array is shielded from light, and the spot images are measured. | 05-22-2014 |
20140139826 | METHOD AND DEVICE OF MEASURING WAVEFRONT ABERRATION, METHOD OF MANUFACTURING OPTICAL SYSTEM, AND RECORDING MEDIUM - A wavefront aberration measuring method forms a plurality of spot images by causing light, which is transmitted through a test optical system, to be incident on a lenslet array, and measures positions of the spot images. Optical paths from the positions of the measured spot images toward a light source are calculated, parameters of the test optical system when light rays from the positions of the spot images converge at the light source are specified, and a wavefront aberration of the test optical system corresponding to the parameters of the test optical system is calculated. | 05-22-2014 |
20140168641 | APPARATUS FOR MEASURING THICKNESS OF LENS AND METHOD USING THE APPARATUS - An apparatus for measuring a thickness of a lens is disclosed. The apparatus includes a first support, a second support, a third support, a first positioning element, a second element and a measuring element. The lens is disposed on the third support. The first positioning element is fixed to the first support to press against a first face of the lens beforehand. The second positioning element is movably mounted to the second support. The second positioning element can move towards the lens to press against a second face of the lens. The measuring element calculates the thickness of the lens according to the moving distance of the second positioning element. | 06-19-2014 |
20140204369 | CLAMPING DEVICE AND METHOD FOR MEASURING ECCENTRICITY OF OPTICAL-ELECTRIC COUPLING MEMBER - A clamping device includes a first plate and a second plate. The first plate includes an upper surface, a lower surface facing away from the upper surface and a first side surface. The upper surface is substantially parallel with the lower surface. The first side surface perpendicularly connects the upper surface and the lower surface. The first plate defines a receiving cavity at a joint of the upper surface and the first side surface. The second plate is detachably connected to the first plate. The second plate includes a top surface and a second side surface. The second side surface perpendicularly connects to the top surface. The second plate defines a sloped surface extending from the top surface to the second side surface. The sloped surface aligns with the receiving cavity. The second plate includes a reflective layer positioned on the sloped surface. | 07-24-2014 |
20140204370 | TESTING OF OPTICAL DEVICES - The present disclosure describes techniques for testing optical devices in a manner that, in some implementations, simulates the environment in which the devices will be used when they are integrated into the end-product or system. For example, one aspect includes providing a transparent sheet that is positioned near the optical device in a manner that simulates at least some aspects of the environment when the device is incorporated into the end-product or system. The testing can be performed, for example, while the optical devices are in production or at some other time prior to their being integrated into an end-product or system. | 07-24-2014 |
20140211203 | TESTING DEVICE AND TESTING LENS MEMBER FOR TESTING CAMERA MODULE - A device for testing a camera module with an actuator is provided. The testing device includes a light emitter, a testing lens member, a light receiver, and a processor. The light receiver emits test light to the camera module. The testing lens member serves as a lens unit of the camera module in a testing process. The testing lens member includes a first lens, and a second lens detachably connected to the first lens. The first lens and the second lens respectively insert into the camera module from two opposite sides of the camera module, and abut two opposite sides of the actuator. The light receiver receives test light emitted from the light emitter and passed through the camera module. The processor determines a quality of the camera module according to the test light received by the light receiver. | 07-31-2014 |
20140293275 | WAVEFRONT ABERRATION MEASURING METHOD, WAVEFRONT ABERRATION MEASURING APPARATUS AND OPTICAL ELEMENT MANUFACTURING METHOD - The wavefront aberration measuring method includes measuring an intensity distribution of a measuring light transmitted through or reflected by an object to be measured, by using a light-receiving sensor, calculating a first differential wavefront which is a differential wavefront of the measuring light on the light-receiving sensor, and calculating a second differential wavefront by performing a correction process on the first differential wavefront depending on an incident angle of the measuring light to the light-receiving sensor. The method further includes calculating a wavefront aberration of the object by using the second differential wavefront. | 10-02-2014 |
20140340672 | AUTOMATIC LENS MAPPING SYSTEM - A system for holding and aligning spectacles such that mapping measurements of the optical properties of a lens can be performed with the lens held such that its optical axis is parallel to the incident measurement beam. This may be implemented using three points which define a plane with which a surface of the lens can be aligned. The frame gripper is constructed such that the lens to be measured is free to rotate in space around any axis until clamped by the three alignment pin support arrangement, with the exception of rotation around the optical axis of the lens. This freedom of rotation allows the lens to be positioned on the alignment pin support automatically without the need for operator intervention. The spectacle frame is clamped using a spring loaded caliper device, configured to sequentially align the mechanical center of each lens with the measuring beam. | 11-20-2014 |
20140347653 | OPTICAL DEVICE, OPTICAL TEST BENCH AND OPTICAL TEST METHOD - This optical system includes: a device ( | 11-27-2014 |
20140347654 | SYSTEM FOR MEASURING THE IMAGE QUALITY OF AN OPTICAL IMAGING SYSTEM - Methods for measuring the image quality of a projection objective include providing a measuring structure on an image-side of the projection objective, providing an immersion fluid between the projection objective and the measuring structure, directing light through the projection objective and the immersion fluid to the measuring structure while shielding the measuring structure from the immersion fluid, detecting light transmitted by the measuring structure, and determining an image quality of the projection objective based on the detected light. | 11-27-2014 |
20140368812 | METHOD AND APPARATUS FOR DETERMINING OBJECT CHARACTERISTICS - Embodiments of the invention provide a method of determining one or more characteristics of a target object, comprising determining a first phase map for at least a region of a target object based on radiation directed toward the target object, determining one or more further phase maps for a sub-region of the region of the target object, determining a number of phase wraps for the sub-region based on a plurality of phase maps for the sub-region, and determining a characteristic of the region of the target object based on the number of phase wraps for sub-region and the first phase map. Embodiments of the invention also relate to a method of determining one or more characteristics of a target object, comprising determining a phase map for at least a region of a target object based on one or more diffraction patterns, determining a wavefront at a plane of the object based upon the phase map, and determining a refractive property of the object based on the wavefront. | 12-18-2014 |
20150009492 | Measuring System for Measuring an Imaging Quality of an EUV Lens - A measuring system ( | 01-08-2015 |
20150042984 | METHODS AND APPARATUS FOR DETERMINING FOCUS - Disclosed are apparatus and methods for determining optimal focus for a photolithography system. A plurality of optical signals are acquired from a particular target located in a plurality of fields on a semiconductor wafer, and the fields were formed using different process parameters, including different focus values. A feature is extracted from the optical signals related to changes in focus. A symmetric curve is fitted to the extracted feature of the optical signals as a function of focus. An extreme point in the symmetric curve is determined and reported as an optimal focus for use in the photolithography system. | 02-12-2015 |
20150055126 | Method And Tool For Measuring The Geometric Structure Of An Optical Component - The subject of the present invention is a method and a system for measuring the geometric or optical structure of an optical component. In particular, the invention relates to a method for measuring the geometric structure of a component bounded by a first side ( | 02-26-2015 |
20150062565 | OPTICAL COUPLING LENS AND METHOD FOR TESTING SAME - An optical coupling lens includes a first reference portion, a second reference portion and a main portion sandwiched between the first reference portion and the second reference portion. The main portion includes a first surface having at least one first converging lens, a second surface having at least one second converging lenses, and a reflecting surface. The second surface is substantially perpendicular to the first surface forming intersection line. An angle between the reflecting surface and the first surface is about 45 degrees. Each reference portion includes a reference member. The reference member includes a reference point. A connecting line of the reference points of the reference portions is substantially parallel to the intersection line. | 03-05-2015 |
20150098078 | Laser Based Lens Analysis Device and Method - A laser based lens analysis device comprising of a laser for emitting a laser beam, a beam expander for increasing the diameter of the laser beam, a beam collimator for collimating the increased diameter laser beam, an aperture for controlling the collimated laser beam and rendering the collimated laser beam to be substantially symmetrical, and a beam profiler for analyzing the laser beam characteristics after the controlled-symmetrical laser beam passes through the lens being tested. A method for lens analysis comprising the steps of emitting a laser beam, increasing the diameter of the laser beam, collimating the increased diameter laser beam, rendering the collimated laser beam substantially symmetrical, directing the symmetrical laser beam towards the lens being tested, and analyzing characteristics of the directed laser beam after the directed laser beam passes through the lens being tested. | 04-09-2015 |
20150109613 | APPARATUS AND METHODS FOR CHARACTERIZING LENSES - A test chart for characterizing lenses comprises X radial lines extending from a central point and Y concentric X-sided polygons centered at the central point. Each of the X radial lines intersects one vertex of each of the polygons. Each of the X radial lines is divided into Y segments by its intersection points with the central point and with the polygons. The radial lines and the polygons define boundaries of X*Y non-overlapping patches. At least two of the patches share a boundary and are distinctly colored from each other. | 04-23-2015 |
20150138540 | SYSTEMS AND METHODS FOR THE INSPECTION OF CONTACT LENSES - An apparatus for inspecting lenses includes an inspection system including an open cuvette, a communicatively coupled CT measurement device, and a user interface communicatively coupled to the inspection system. According to one embodiment, the lens inspection system provides a single instrument for inspecting the quality of a lens, thereby minimizing the transference of the lens from one inspection component to another. | 05-21-2015 |
20150292978 | LENS POWER MEASUREMENT DEVICE AND MEASUREMENT METHOD - Provided are a lens power measurement device and a lens power measurement method whereby lens power measurement results of a contact lens can be displayed in a manner which is easy to view, while maintaining fully satisfactory precision of the lens power measurement results. From lens power distribution information determined based on optical property measurement information of a contact lens, correction target information including positive and negative abnormal peaks on both sides of a lens central axis in a lens central area is selected. Lens power distribution measurement results are then obtained by applying substitution using a correction function that smooths out the abnormal peaks to the selected correction target information to smooth the lens power measurement values. | 10-15-2015 |
20150300913 | ON-TOOL WAVEFRONT ABERRATIONS MEASUREMENT SYSTEM AND METHOD - An on-tool measurement system and a method for measuring optical system's wavefront (WF) aberrations are disclosed. The on-tool measurement system includes an optical setup comprising a moveable deflection element further comprising a highly transparent region. The deflection element includes a first surface configured to project a first image of at least one object onto a sensor and the highly transparent region includes a second surface configured to project a second image of the at least one object onto the sensor. The on-tool measurement system includes a sensor configured to capture the first and second images and a controller configured to measure differential displacements between the first and second images at each deflection element position and to calculate the optical setup local WF gradients that depend on the measured differential displacements. | 10-22-2015 |
20150330865 | HANDHELD APPARATUS FOR MEASURING LENS SURFACE POWER - This invention discloses a handheld apparatus for measuring surface power or radius of prescription ophthalmic spectacle lenses, optical lenses or molds blocked with or without chuck during Rx production, and after comparing measurement results with designed data, providing correction data to the processing machines via wireless connection for correction processing if needed. The handheld apparatus integrates an optical measurement head into a monolithic optical system. | 11-19-2015 |
20150355052 | TEST OBJECT FOR MEASURING THE POINT SPREAD FUNCTION OF AN OPTICAL SYSTEM - A test object for measuring the point spread function (PSF) of an optical system having a given Airy diameter (d | 12-10-2015 |
20160041479 | FOCUS CORRECTION METHOD, FOCUS CORRECTION APPARATUS AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM - In accordance with an embodiment, a focus correction method includes obtaining a first defocus amount by measuring a QC wafer, obtaining a second defocus amount by measuring a product wafer, generating high-order focus correction data for an entire wafer surface by interpolating the second defocus amount on the basis of the first defocus amount, and correcting a focus on the basis of the high-order focus correction data. | 02-11-2016 |
20160054196 | METHOD AND SYSTEM FOR DETERMINING THE SPATIAL STRUCTURE OF AN OBJECT - The spatial structure of an optical element is determined. The optical element has a first optically active surface and a second optically active surface. The optical element is arranged in a holding device. The position of a point (P) on the first optically active surface and the position of a point (P′) on the second optically active surface are referenced in a coordinate system fixed to the holding device. The topography of the first optically active surface is determined in a coordinate system referenced to the holding device by the position of point (P) and the spatial structure of the optical element is calculated from the topography of the first optically active surface and from a data set as to the topography of the second optically active surface. The data set is referenced to the fixed coordinate system of the holding device by the position of point (P′). | 02-25-2016 |
20160138999 | METHOD AND APPARATUS FOR DETERMINING OBJECT CHARACTERISTICS - Embodiments of the invention provide a method of determining one or more characteristics of a target object, comprising recording one or more diffraction patterns at a detector, wherein each diffraction pattern is formed by a target object scattering incident radiation, determining a phase map for at least a region of the target object based on the one or more diffraction patterns, and determining a refractive property of the target object based on the phase map. | 05-19-2016 |
20160146698 | CUVETTE SYSTEM AND METHODS FOR THE INSPECTION OF OPHTHALMIC LENSES - A cuvette system ( | 05-26-2016 |