| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 356124000 | LENS OR REFLECTIVE IMAGE FORMER TESTING | 71 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 356124500 | For optical transfer function | 6 |
| 20130057851 | Simplified Checking Bench for Telescopes and Auto-Checkable Telescopes - In the field of optical checking of optical instruments of telescope type, an instrument comprises an optical objective, a photo-detection housing arranged at the focus of said optical objective and at least one light source arranged in the vicinity of said photo-detection housing, the optical pupil of the optical objective having a first diameter. The checking means comprise a plane mirror having a second diameter that is smaller than the first diameter and means to arrange the plane mirror such that the image of the light source given by the optical objective and reflected by said plane mirror is focused on the photo-detection housing, means for analyzing said image received making it possible to determine the optical quality of the telescope. The plane mirror may be associated with an autonomous checking bench. It may also form part of the telescope and be incorporated into the protection hood for the optic. | 03-07-2013 |
| 20090185174 | METHOD FOR TESTING A LENS AND POSITIONING THE LENS RELATIVE TO AN IMAGE SENSOR - A method for testing and positioning a lens includes determining whether a modulation transfer function (MTF) value of the lens for an object at a first object distance is not less than a first required MTF value and whether another MTF value of the lens for an object at a secondary object distance is not less than a secondary required MTF value. A first MTF curve is plotted according to optical resolution measurements for the object at the first object distance, and the secondary MTF curve is obtained by offsetting the first MTF curve. The secondary MTF curve can approximately represent optical resolution measurements for the object at a secondary object distance. The method can determine an ideal range of positions of the lens relative to an image sensor. | 07-23-2009 |
| 20100177303 | MTF MEASURING SYSTEM, MTF MEASURING METHOD, MTF MEASURING UNIT AND MTF MEASURING PROGRAM - Measurement result screen data indicative of an object image and an MTF curve image are generated in accordance with the object image data obtained by photographing the object and the MTF curve image data indicative of the MTF curve generated from MTF data that become an index to evaluate lens performance. The measurement result screen based on the generated measurement result screen data is displayed, so that the measurement result screen indicative of the object image and the MTF curve image can be displayed on a real time basis in the case of evaluation measurement operations of the lens performance. As a result, a user grasps necessity for a focus adjustment from the MTF curve image on the measurement result screen, if necessary, adjusts focus of the object displayed together with the MTF curve image, and at the same time can evaluate the lens performance from the MTF curve image. | 07-15-2010 |
| 20100053601 | OPTICAL DEVICE INSPECTING APPARATUS - To provide an optical device inspecting apparatus which can be set to take many objects at one time more freely compared with conventional apparatuses, and furthermore, can accurately inspect even an optical device wherein an optical sensor is offset from a microlens. [MEANS FOR SOLVING PROBLEMS] Provided is an optical device inspecting apparatus having a probe card unit and a lens unit. The probe card unit is provided with a main substrate, a guide plate and a probe. Openings are made on the main substrate and the guide plate. The guide plate is fixed at a prescribed position from the main substrate, and is provided with a plurality of probe inserting holes. The probe is inserted into the probe inserting hole on the guide plate and fixed. The leading end portion of the probe protruding from the inserting hole has a shape of a cantilever. The lens unit using a pupil lens is arranged at the opening on the main substrate, and makes light applied to an inspecting object incline as the light goes further from the center of the optical system. | 03-04-2010 |
| 20120113413 | METHOD AND DEVICE FOR ALGINING A LENS WITH AN OPTICAL SYSTEM - The invention comprises a process for pre-aligning a lens with an optical system, the process comprising: providing a lens and an optical system having an optical axis, wherein the lens is apt to be aligned with the optical system to form on an image plane an image of a source object, the image having top, bottom, left and right edges; coarsely positioning the lens with respect to the optical system; and in a plane normal to the optical axis of the optical system, correcting the position of the lens until the values of four Combination Modulation Transfer Functions (C-MTF) are in predetermined ranges, the C-MTF being calculated at four coarse measurement locations situated close to the edges of the image along two coarse positioning axes crossing the center of the image, each for a combination pattern comprising a combination of a Sagittal pattern and a Tangential pattern. | 05-10-2012 |
| 20110102776 | BEAM PATH MONITORING DEVICE AND BEAM PATH MONITORING SYSTEM - An optical line monitoring apparatus and optical line monitoring system which can measure a reflectance distribution in an optical line with a high spatial resolution in a short time are provided. An optical line monitoring apparatus | 05-05-2011 |
| 356125000 | Focal length measuring | 8 |
| 20080278712 | Confocal Fiber-Optic Laser Device and Method for Intraocular Lens Power Measurements - A lens power measuring system has a light source and a fiber-optic light delivery system optically coupled to the light source to receive illumination light from the light source. The fiber-optic light delivery system has a transmit/receive end. The lens power measurement system also has a microscope objective optically coupled to the fiber-optic light delivery system through the transmit/receive end of the fiber-optic light delivery system, a movable mirror arranged to intercept at least a portion of light after having passed through the microscope objective, and an optical detection system optically coupled to the fiber-optic light delivery system to receive light after having been reflected from said movable mirror. The optical detection system is constructed to be able to determine a substantially maximum signal of light reflected from the movable mirror in correspondence with a relative position of the movable mirror to a lens to be measured. Methods of measurement include methods using such a lens system. | 11-13-2008 |
| 20080297776 | Cup attaching apparatus - A cup attaching apparatus for attaching a cup as a processing jig to an eyeglass lens, comprises: an illumination optical system comprising an illumination light source and arranged to illuminate the lens from a side of a front surface of the lens by illumination light from the light source; an imaging optical system comprising an imaging device and a retroreflection member placed on an opposite side from the light source with respect to the lens, the imaging optical system being adapted such that the retroreflection member returns the illumination light passing through the lens back to its incoming direction, and the imaging device receives the returned illumination light, and the imaging optical system being adjusted to focus on a point near a surface of the lens; an image processing device adapted to process an image signal from -the- imaging device to detect at least one of a mark point provided on a unifocal lens, a small lens portion of a bifocal lens, and a progressive mark provided on a progressive focal lens and obtain a position of the detected one; and an arithmetic control device adapted to determine an attaching position of the cup based on the position obtained by the image processing device. | 12-04-2008 |
| 20100188653 | OPTICAL COMPONENT FOCUS TESTING APPARATUS AND METHOD - An optical component focus testing apparatus includes a plurality of test pattern displays. One or more illuminators are configured to selectively illuminate different test pattern displays at different times. Light directors are provided to direct light from at least one of the illuminated test pattern displays towards an optical component under test. The light directors and test pattern displays are arranged such that, in use, light directed from different illuminated test pattern displays travel different distances to reach the optical component under test. | 07-29-2010 |
| 20090168054 | 3-D Shape Measuring Method for Auto-Grinding Equipment of LCD Color Filter and 3-D Shape Measuring Apparatus for the Same - Provided are a three-dimensional image measuring method and apparatus for an LCD color filter automatic grinder. It is possible to measure a three-dimensional image of an LCD color filter, even though textures for recovering the three-dimensional image are insufficient, by irradiating illumination passed through a patterned filter to the LCD color filter. In addition, it is possible to measure a three-dimensional image of an LCD color filter by obtaining a plurality of image sequences along an optical axis of a camera composed of CCD or CIS. Illumination is irradiated to an LCD color filter to be measured through a patterned filter. | 07-02-2009 |
| 20110134417 | INSTRUMENT AND METHOD FOR CHARACTERISING AN OPTICAL SYSTEM - An instrument ( | 06-09-2011 |
| 20110149273 | METHOD AND SYSTEM FOR MEASURING A FOCAL LENGTH OF AN OPTICAL LENS - A system for measuring a focal length of an optical lens includes an image processing device and an operating platform. The image processing device is configured for capturing a light spot image of the optical lens. The operating platform includes a mount, a holder and a measurer. The mount is configured for mounting the image processing device. The holder is configured for holding the optical lens. The mount is moved back and forth along the direction towards and away from the optical lens held by the holder. The measurer is configured for measuring and recording a distance between image processing device and the optical lens when a minimal light spot image of the optical lens is obtained. The distance is the focal length of the optical lens. | 06-23-2011 |
| 20120026485 | DEVICE FOR MEASURING THE FOCAL DISTANCE OF A THERMAL LENS - A method for measuring focal distance of a thermal lens located in an analyte, the method including: providing an exciting optical beam passing through the analyte and creating the thermal lens therein; emitting a coherent probe optical beam passing through the analyte and being propagated substantially perpendicular to the exciting optical beam; intercepting the probe optical beam by a detector after passing through the analyte; focusing the probe optical beam upstream or downstream of the thermal lens such that only a fraction of the probe optical beam passes through the thermal lens; acquiring an interference image by the detector; and processing the interference image to calculate the focal distance of the thermal lens. Such a method may find application in physico-chemical analysis of the analyte. | 02-02-2012 |
| 356126000 | Deflecting or interrupting optical path | 1 |
| 20100060883 | Apparatus and method for determining the focus position - An apparatus and a method for determining the focus of an optical system on a substrate are disclosed. A light source emits an auxiliary light beam into an auxiliary beam path, wherein the auxiliary light beam, after splitting, is offset in relation to an optical axis of a measuring objective. At least one optical switch is provided in the auxiliary beam path for switching the path of the auxiliary beam path from one side offset from the optical axis to the other side offset from the optical axis of the measuring objective. | 03-11-2010 |
| 356127000 | Optical center, cylinder axis, or prism measuring or determining | 6 |
| 20130027692 | ECCENTRICITY MEASURING METHOD - In an eccentricity measuring method according to the present invention, a first position of a light source image formed by reflection at one optical surface is measured (S | 01-31-2013 |
| 20080285019 | INTERFEROMETRY TESTING OF LENSES, AND SYSTEMS AND DEVICES FOR SAME - Modified MZ (Mach-Zender) interferometers preferably are utilized to analyze the transmitted, aspherical wavefront of an ophthalmic lens by mounting the lens in a cuvette having a rotatable carousel that can hold multiple lenses. Fresh, temperature controlled, saline solution is circulated about the lenses, and the cuvette is positioned in a vertical test arm of the interferometer configuration. Reverse raytracing preferably is utilized to remove aberrations induced into the wavefront as it is imaged from immediately behind the lens to the detector of the interferometer. | 11-20-2008 |
| 20080316470 | System for checking centration of lens surfaces of aspheric lens - A system for checking centration of lens surfaces of an aspheric lens includes a light-emitting device, a lens holder and an image processing device. The light-emitting device emits a light. The lens holder positions the aspheric lens in a light path of the light emitted from the light-emitting device. The image processing device receives the light which is emitted from the light-emitting device and has passed through the aspheric lens, and produces an image and shows the image. A quality of the image shown by the image processing device determines a tilt degree of the aspheric lens. | 12-25-2008 |
| 20090051904 | Apparatus for measuring decenter error of a lens - A lens decenter error measuring apparatus including a testing device, a lens supporter, and a lens carrier is disclosed. The testing device is configured for measuring a decenter error of a lens. The lens supporter is configured for receiving the lens. The lens carrier is installed within the lens supporter and includes at least three spheres and an elastic member. The spheres associated with the elastic member constrain the lens when the lens is placed in the lens supporter. | 02-26-2009 |
| 20080204728 | METHOD AND APPARATUS FOR DETECTING CONCENTRICITY OF LENS MODULE - A detecting apparatus includes a light source configured (i.e., structured and arranged) for irradiating the lens module with light, the light being brought into a focus by the lens module; a detecting device configured for measuring and recording a location of the focus; and a driving device configured for driving a barrel of the lens module to rotate relative to a holder of the lens module. The detecting apparatus is particularly configured such that, when the driving device drives the barrel of the lens module to rotate to two different angular locations, the light source irradiates the lens module with light, the lens module making the light be brought into two respective focuses at (i.e., relative to) the two different angular locations, and the detecting device measures a deviation distance between the two respective focuses. A method of detecting concentricity of a lens module is further provided. | 08-28-2008 |
| 20080204729 | METHOD AND APPARATUS FOR DETERMINING AT LEAST ONE OPTICAL PROPERTY OF AN IMAGING OPTICAL SYSTEM - A method and an apparatus for determining at least one optical property of an imaging optical system which is designed to image an object disposed in an object plane of the optical system into an assigned image plane. The method includes disposing at least one test structure in the object plane of the optical system, disposing an image recording device in at least two different positions relative to the image plane of the optical system, in each of the at least two relative positions the image recording device being offset in relation to the image plane to such an extent that an image of the pupil of the optical system is produced respectively on the image recording device by the optical system by means of the test structure, and recording an image produced on the image recording device by the optical system by means of the test structure in each of the at least two relative positions by means of the image recording device. | 08-28-2008 |
