Class / Patent application number | Description | Number of patent applications / Date published |
356456000 | Imaging | 51 |
20090015842 | Phase Sensitive Fourier Domain Optical Coherence Tomography - Optical Coherence Tomography (OCT) is an imaging technique with high axial resolution in the micro-meter-scale range combined with a high sensitivity allowing for example to probe weakly back-scattering structures beneath the surface of biological tissues up to several millimeters. A major improvement of this conventional technique represents Fourier Domain OCT with a further decrease in image acquisition time and additional sensitivity. The apparatus including appropriate signal processing reconstructs the depth profile from the spectrally resolved light signal generated by a broadband source and an interferometric imaging system. By frequency shifting the light fields with frequency shifting means in the reference and sample arm a phase resolved signal at high speed can be registered. Therefore the reference arm does not rely on arm length changes or delays. The beating signal generated in this way shows high phase stability. The phase of this beating signal is not wavelength dependent, as the frequency shift applied is the same for all wavelengths. Moreover this results in an additional suppression of unwanted auto-correlated distortion as well as an extended depth range. | 01-15-2009 |
20090116029 | WAVELENGTH DIVISION IMAGE MEASURING DEVICE - A wavelength division image measuring device that can divide a wideband incident light from a measurement object into a plurality of wavelengths with high selectivity to thereby measure these images simultaneously and collectively. Micro periodic irregular lattices are formed on a substrate | 05-07-2009 |
20090219544 | SYSTEMS, METHODS AND COMPUTER-ACCESSIBLE MEDIUM FOR PROVIDING SPECTRAL-DOMAIN OPTICAL COHERENCE PHASE MICROSCOPY FOR CELL AND DEEP TISSUE IMAGING - Exemplary arrangement, apparatus, method and computer accessible can be provided. For example, using the exemplary arrangement, apparatus and method, it is possible to configured to propagate at least one electro-magnetic radiation. Indeed, it is possible to receive, using at least one first arrangement, a first portion of the at least one electro-magnetic radiation directed to a sample and a second portion of the least one electro-magnetic radiation directed to a reference, the first arrangement can be structured to at least partially reflect and at least partially allow to transmit the first and second portions. In addition, it is possible to receive, using a second arrangement, (i) a third portion of the electro-magnetic radiation associated with at least one of the transmitted first portion or the reflected first portion from the sample and (ii) a fourth portion of the electro-magnetic radiation associated with at least one of the second transmitted portion of the least one electro-magnetic radiation or the reflected second portion from the reference. The third and fourth portions can travel at least partially along substantially the same path toward the second arrangement, Further, the second arrangement can be configured to receive the reflected first and second portion(s) which interfere with one another, and generate at least one signal which includes information associated with at least one fluctuation in an uncommon path of the first and second portions prior to a receipt thereof by the at least one first arrangement. In addition or alternatively, the second arrangement can be configured to determine information regarding a spectrally resolved interference associated with the third and fourth portions. | 09-03-2009 |
20090231592 | REFRACTIVE SPATIAL HETERODYNE SPECTROMETER - A refractive spatial heterodyne spectrometer includes an input aperture for receiving an input light; a collimating lens for collimating the input light into a collimated lightbeam; and a beamsplitter for reflecting one part of the collimated light into a first arm and transmitting another part of the collimated light into a second arm. The first arm includes a first dispersing prism for receiving and refracting the first part of the collimated light, and a first mirror positioned to reflect the refracted first collimated light back through the first dispersing prism and to the beamsplitter as a first light wavefront. The second arm includes a second dispersing prism for receiving and refracting the other part of the collimated light, and a second mirror positioned to reflect this refracted light back through the second dispersing prism and to the beamsplitter as a second light wavefront. The beamsplitter transmits a portion of the first light wavefront and reflects a portion of the second light wavefront into an output optics section to inferometrically combine into an interference image, and a detector receives the interference image and outputs an interference image pattern. | 09-17-2009 |
20090262360 | SYSTEM AND METHOD FOR HIGH RESOLUTION IMAGING OF CELLULAR DETAIL IN THE RETINA - A system and method for imaging tissue cells at a predetermined depth in the retina of an eye include components that provide for compensation of refractive errors. Specifically, the system basically includes three subassemblies that operate in concert with each other. There is a first subassembly for directing a first light beam into the eye to measure anterior optical aberrations. There is also a second subassembly for directing a second light beam through retinal tissue to a predetermined depth where the tissue cells are located. This second light beam is used to measure phase aberrations introduced by the retinal tissue. And, there is a third subassembly for directing a third light beam to the tissue cell to produce an image of the tissue cell. In the third light beam, the anterior optical aberrations and the phase aberrations have been substantially removed to provide a clearer image of the tissue cell. | 10-22-2009 |
20090316160 | OPTICAL COHERENCE IMAGING SYSTEMS HAVING A REDUCED EFFECTIVE LINEWIDTH AND METHODS OF USING THE SAME - Frequency domain optical coherence imaging systems have an optical source, an optical detector and an optical transmission path between the optical source and the optical detector. The optical transmission path between the optical source and the optical detector reduces an effective linewidth of the imaging system. The optical source may be a broadband source and the optical transmission path may include a periodic optical filter. | 12-24-2009 |
20100014090 | SYSTEMS AND METHODS FOR ENDOSCOPIC ANGLE-RESOLVED LOW COHERENCE INTERFEROMETRY - Fourier domain a/LCI (faLCI) system and method which enables in vivo data acquisition at rapid rates using a single scan. Angle-resolved and depth-resolved spectra information is obtained with one scan. The reference arm can remain fixed with respect to the sample due to only one scan required. A reference signal and a reflected sample signal are cross-correlated and dispersed at a multitude of reflected angles off of the sample, thereby representing reflections from a multitude of points on the sample at the same time in parallel. Information about all depths of the sample at each of the multitude of different points on the sample can be obtained with one scan on the order of approximately 40 milliseconds. From the spatial, cross-correlated reference signal, structural (size) information can also be obtained using techniques that allow size information of scatterers to be obtained from angle-resolved data. | 01-21-2010 |
20100027021 | System for Optical Coherence Tomography - The invention relates to a system for optical coherence tomography having an interferometer ( | 02-04-2010 |
20100134800 | METHOD FOR CALIBRATING INTERPIXEL GAINS OF AN INTERFEROMETER - A method is provided to calibrate a detection array used for acquiring an image of an interferogram at an instrument. A first interferogram and at least two shifted interferograms are elaborated at the instrument by creating a number of optical path differences, so at least three samples are on a sine wave portion for each optical path difference. A function coinciding with the sine wave portion is determined by interpolation. A calibration coefficient is determined from the function for each optical path difference. | 06-03-2010 |
20100165347 | METHOD AND APPARATUS FOR DETECTING COLORED FOREIGN PARTICLES IN QUARTZ POWDER MATERIAL - Colored foreign particles contained in quartz powder material are detected in a high precision with the specified detection apparatus even when the colored foreign particles are pale colored foreign particles such as iron-based refuse, organic refuse and carbon-based refuse. | 07-01-2010 |
20100195111 | SPATIAL IMAGING/IMAGING SPECTROSCOPY SYSTEM AND METHOD - A system and method for spatial imaging and imaging spectroscopy system includes a sample holder for holding samples, an illumination system arranged to illuminate the samples, a wavelength isolation module configured to selectively isolate received illumination from the samples to a plurality wavelengths, a single matrix imaging device arranged to receive the isolated wavelengths from the wavelength isolation module through a single lens system, and a computing device configured to perform a spatial imaging and imaging spectroscopy process. The spatial imaging and imaging spectroscopy process includes acquiring image data corresponding to each of the isolated wavelengths, performing spatial imaging analysis based on the acquired image data, and performing imaging spectroscopy on the acquired image data. | 08-05-2010 |
20100231917 | Methods and Systems for Removing Undesired Artifacts in Fourier Domain Optical Coherence Tomography (FDOCT) Systems Using Continuous Phase Modulation and Related Phase Modulators - Methods, fourier domain optical coherence tomography (FDOCT) interferometers and computer program products are provided for removing undesired artifacts in FDOCT systems using continuous phase modulation. A variable phase delay is introduced between a reference arm and a sample arm of an FDOCT interferometer using continuous phase modulation. Two or more spectral interferograms having different phase delay integration times are generated. The spectral interferograms are combined using signal processing to remove the undesired artifacts. Systems and methods for switching between stepped and continuous phase shifting Fourier domain optical coherence tomography (FDOCT) and polarization-sensitive optical coherence tomography (PSOCT) are also provided herein. | 09-16-2010 |
20100245833 | SYSTEM AND METHOD FOR MEASURING DISPLAY QUALITY WITH A HYPERSPECTRAL IMAGER - A system and method for measuring display quality by using a hyperspectral imager are disclosed. In one embodiment, the system comprises a hyperspectral imager configured to determine an intensity of light for a plurality of locations in a first area on a display for a plurality of spectral channels, and a processor configured to determine a measure of display quality based on the determined intensities. | 09-30-2010 |
20100296099 | OPTICAL DEVICE - An optical device includes a photodetector, a Fabry-Perot interferometer and an analyzer. | 11-25-2010 |
20110026035 | OPTICAL TOMOGRAPHIC IMAGING APPARATUS - An optical tomographic imaging apparatus is provided which includes a low-resolution mode for rough imaging and a high-resolution mode for obtaining detailed images. In particular, an optical tomographic imaging apparatus is provided which enables tomographic imaging during a high-resolution mode to be performed at higher speeds. An imaging apparatus according to the present invention captures an optical interference tomographic image based on a combined beam that combines a return beam from an object irradiated by a measuring beam and a reference beam corresponding to the measuring beam. The imaging apparatus according to the present invention further includes a beam diameter changing unit for changing a beam diameter of the measuring beam. Furthermore, the imaging apparatus according to the present invention includes a detection unit configured to detect the combined beam at a resolution according to the beam diameter. | 02-03-2011 |
20110157596 | SYSTEMS AND METHODS FOR ENDOSCOPIC ANGLE-RESOLVED LOW COHERENCE INTERFEROMETRY - Fourier domain a/LCI (faLCI) system and method which enables in vivo data acquisition at rapid rates using a single scan. Angle-resolved and depth-resolved spectra information is obtained with one scan. The reference arm can remain fixed with respect to the sample due to only one scan required. A reference signal and a reflected sample signal are cross-correlated and dispersed at a multitude of reflected angles off of the sample, thereby representing reflections from a multitude of points on the sample at the same time in parallel. Information about all depths of the sample at each of the multitude of different points on the sample can be obtained with one scan on the order of approximately 40 milliseconds. From the spatial, cross-correlated reference signal, structural (size) information can also be obtained using techniques that allow size information of scatterers to be obtained from angle-resolved data. | 06-30-2011 |
20110176139 | MEASURING APPARATUS AND EXPOSURE DEVICE - An apparatus includes a system configured to split a light emitted from a light source into reference light and subject light, cause the subject light to enter into an object, and combine the subject light reflected by the object with the reference light, a detection unit configured to detect coherent light between the combined subject and reference lights, an element, provided within a light path of the reference light or the subject light, configured to change a path length difference between the reference light and the subject light and a relative position between the reference light and the subject light in a light receiving surface of the detection unit, and a position-variable mechanism configured to cause a position of the optical element to be changeable, wherein, by changing a position of the element, the optical path length difference and the relative position are independently adjusted. | 07-21-2011 |
20110199615 | OPTICAL COHERENCE TOMOGRAPHIC IMAGING APPARATUS - An optical coherence tomographic imaging apparatus for splitting light emitted from a light source into reference light and signal light and creating an optical coherence tomographic image and tomographic spectral information in a predetermined spectral analyzing portion in the optical coherence tomographic image based on optical interference signal information of the reference light and the signal light which are incident on an inspection target and reflected on respective layers, the optical coherence tomographic imaging apparatus including a spectral information processing unit for performing a spectral information calculation using an optical interference signal of a deeper region and creating the tomographic spectral information of the spectral analyzing portion. With this arrangement, spectral information corresponding to the optical coherence tomographic image can be output with high wavelength accuracy. | 08-18-2011 |
20110199616 | PROCESS AND INSTRUMENT FOR RECONSTRUCTION OF AN IRREGULARLY SAMPLED NARROW-BAND SIGNAL - According to a first aspect the invention relates to a reconstruction process of a narrow-band signal acquired by an instrument producing irregular sampling, in which two series of samples are acquired at the same sampling period, the two series being offset relative to one another such that the sampling errors are identical or quasi identical over both series. According to a second aspect, the invention relates to an instrument configured to carry out the process according to the first aspect of the invention. | 08-18-2011 |
20110235046 | IMAGING APPARATUS - An imaging apparatus includes an optical source configured to emit an electromagnetic wave, a wave dividing unit configured to divide the wave from the optical source into a first and a second wave beam, a probe optical source configured to emit a probe beam, a probe-beam dividing unit configured to divide the probe beam into a first and a second probe beam, a first crystal on which the first crystal is irradiated through an object and the first probe beam is incident, a second crystal on which the second crystal is irradiated through an object and the second probe beam is incident, an interference unit configured to allow the first probe beam from the first crystal to interfere with the second probe beam from the second crystal, and an image pickup device configured to capture an interference figure between the first and the second probe beam. | 09-29-2011 |
20120038929 | Method and Apparatus for Angular-Resolved Spectroscopic Lithography Characterization - An apparatus and method to determine a property of a substrate by measuring, in the pupil plane of a high numerical aperture lens, an angle-resolved spectrum as a result of radiation being reflected off the substrate. The property may be angle and wavelength dependent and may include the intensity of TM- and TE-polarized radiation and their relative phase difference. | 02-16-2012 |
20120105859 | Optical Measuring Apparatuses - An optical measuring apparatus may include a light source, linear polarizer, polarized beam splitter, quarter wave plate, objective lens, and/or light receiver. The polarized beam splitter may be configured to transmit linearly polarized light from the linear polarizer to any one of a first and second optical path. The quarter wave plate may be configured to circularly polarize light transmitted through the first optical path from the polarized beam splitter and transmit the circularly polarized light to an object to be measured, and the quarter wave plate may be configured to linearly polarize the circularly polarized light reflected from the object to be measured and transmit the linearly polarized reflected light to the second optical path of the polarized beam splitter. The objective lens may be configured to generate light having different wavelengths by generating chromatic aberration in the circularly polarized light from the quarter wave plate. | 05-03-2012 |
20120105860 | METHOD AND DEVICE FOR CARRYING OUT AN OPTICAL COMPARISON BETWEEN AT LEAST TWO SAMPLES, PREFERABLY BY COMPARING SECTIONS THAT CAN BE SELECTED - An improved method and an improved device for carrying out an optical comparison between at least two samples, preferably by comparing sections that can be selected, is characterized by the following characteristics: the sample (UR, LE, I) that is to be examined and is characterized by a non-uniformity in the structure and/or color is illuminated by diffused light; from the light reflected by the sample (UR, LE, I) to be examined, an interference spectrum is created by means of a spectrometer; the interference spectrum created by the spectrometer is depicted on a camera; the interference spectrum obtained in this way and/or values of the sample (I) to be examined derived therefrom are used as sample values which are compared to sample values of a reference sample (UR, LE) obtained accordingly. | 05-03-2012 |
20120113430 | Schlieren type ultrasonic wave observer system - The invention discloses the Schlieren type ultrasonic wave observer system. The invention states optics interference by the ultrasonic wave sound field after perturbation the medium, and combines to make the interference penetration optical projection the image, the goal lies in the observation ordinary naked eye blind ultrasonic wave sound field distribution. Characteristic of the invention using the spectroscope and the reflector combination, as well as microcontroller precise time delay control, might formerly be limited under the 4F optical field length limit to enhance largely the field of vision the several fold. | 05-10-2012 |
20120113431 | OPTICAL IMAGE MEASUREMENT APPARATUS - A motion detector | 05-10-2012 |
20120127472 | Broadband Discrete Spectrum Optical Source - A new broadband discrete spectrum light source comprising a gain medium placed in a feedback cavity is disclosed. A design for a feedback cavity including reflectors having raised-edge reflectivity is presented. Bandwidth enhancement is achieved by selectively enhancing the intensity of the discrete emission lines near the band edges of the gain medium spectrum. The bandwidth of a broadband discrete spectrum light source is further enhanced by digitally applying a spectral correction to each detected signal according to a predetermined correction profile. A combined effect of using a broadband discrete spectrum light source and applying spectral correction to the detected signal in an imaging system such as a Spectral Domain Optical Coherence Tomography (SD-OCT) imaging system, results in a desired spectral profile and a bandwidth necessary to achieve higher depth resolution for obtaining high quality diagnostic images. | 05-24-2012 |
20120147380 | VARIABLE WAVELENGTH INTERFERENCE FILTER, OPTICAL MODULE, AND OPTICAL ANALYSIS DEVICE - A wavelength-variable interference filter includes first and second electrodes provided at first and second substrates, respectively, the second substrate including a movable section, first and second electrode wires that extend from the first and second electrodes toward outer circumferential edges of the first and second substrates, respectively, a first opposite electrode wire disposed so as to be isolated from the second electrode, and a first conductive section that connects the first electrode wire with the first opposite electrode wire. The second electrode wire and the first opposite electrode wire extend passing through a center point of an imaginary circle of the movable section in respective directions and dividing the imaginary circle at regular angular intervals. | 06-14-2012 |
20120281223 | COMPACT INTERFEROMETER SPECTROMETER - An interferometer is disclosed, such as may be incorporated into a hand-held spectrometer. The interferometer comprises enclosed path optics and a detector, the enclosed path optics comprise at least two reflecting elements and a beamsplitter, the beamsplitter is arranged to divide an input beam into first and second beams. The enclosed path optics are arranged to direct the first and second beams in opposite directions around paths enclosing an area and to output the first and second beams towards the detector. The enclosed path optics also focus the first and second beams onto the detector. The detector is arranged to detect a pattern produced by interference of the first and second beams. In a preferred embodiment the two reflecting elements are a pair of concave mirrors, and the enclosed path optics enclose a triangular area. The use of concave mirrors for both reflection and focussing provides the interferometer with compactness. | 11-08-2012 |
20120281224 | SYSTEMS AND METHODS FOR ENDOSCOPIC ANGLE-RESOLVED LOW COHERENCE INTERFEROMETRY - Fourier domain a/LCI (faLCI) system and method which enables in vivo data acquisition at rapid rates using a single scan. Angle-resolved and depth resolved spectra information is obtained with one scan. The reference arm can remain fixed with respect to the sample due to only one scan required. A reference signal and a reflected sample signal are cross-correlated and dispersed at a multitude of reflected angles off of the sample, thereby representing reflections from a multitude of points on the sample at the same time in parallel. Information about all depths of the sample at each of the multitude of different points on the sample can be obtained with one scan on the order of approximately 40 milliseconds. From the spatial, cross-correlated reference signal, structural (size) information can also be obtained using techniques that allow size information of scatterers to be obtained from angle-resolved data. | 11-08-2012 |
20120327421 | MICRO-MACHINED IMAGING INTERFEROMETER - A micro-machined optical measuring device including: a set of photosensitive detector elements situated on a given face of a first support; a second support, assembled to the first support, forming a prism and including a first face through which a visible radiation is intended to penetrate and a second face, forming a non-zero angle θ with the first face and a non-zero angle α with the given face of the first support, the second face being semi-reflective, the first support and the second support being positioned such that an interferometric cavity is made between the second face and the given face, the distance between the given face of the first support and the second face of the second support varying regularly. | 12-27-2012 |
20130176571 | METHOD AND APPARATUS FOR OPTICAL IMAGING VIA SPECTRAL ENCODING - Method, apparatus and arrangement according an exemplary embodiment of the present invention can be provided for generating an image of at least one portion of an anatomical structure. For example, the portion can have an area greater than about 1 mm | 07-11-2013 |
20130182259 | SYSTEM AND METHOD FOR CALIBRATED SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY AND LOW COHERENCE INTERFEROMETRY - Systems and methods for enhancing spectral domain optical coherence tomography (OCT] are provided. In particular, a system and method for calibration of spectral interference signals using an acquired calibration signal are provided. The calibration signal may be logarithmically amplified to further improve the accuracy of the calibration. From the calibration signal, a series of more accurate calibration data are calculated. An acquired spectral interference signal is calibrated using these calibration data. Moreover, systems that include logarithmic amplification of the spectral interference signal and variable band-pass filtering of the spectral interference signal are provided. Such systems increase the dynamic range and visualization capabilities relative to conventional spectral domain OCT systems. | 07-18-2013 |
20130265582 | SYSTEMS AND METHODS FOR ENDOSCOPIC ANGLE-RESOLVED LOW COHERENCE INTERFEROMETRY - Fourier domain a/LCI (faLCI) system and method which enables in vivo data acquisition at rapid rates using a single scan. Angle-resolved and depth resolved spectra information is obtained with one scan. The reference arm can remain fixed with respect to the sample due to only one scan required. A reference signal and a reflected sample signal are cross-correlated and dispersed at a multitude of reflected angles off of the sample, thereby representing reflections from a multitude of points on the sample at the same time in parallel. Information about all depths of the sample at each of the multitude of different points on the sample can be obtained with one scan on the order of approximately 40 milliseconds. From the spatial, cross-correlated reference signal, structural (size) information can also be obtained using techniques that allow size information of scatterers to be obtained from angle-resolved data. | 10-10-2013 |
20140009764 | METHOD FOR MEASURING AN ANGULARLY RESOLVED INTENSITY DISTRIBUTION AND PROJECTION EXPOSURE APPARATUS - A method for measuring an angularly resolved intensity distribution in a reticle plane ( | 01-09-2014 |
20140049779 | DETERMINING MATERIAL PROPERTIES USING SPECKLE STATISTICS - A property of a material is determined. The material is illuminated with a light beam of controlled spectral and coherence properties. A stack of speckle field images is recorded from speckle fields reflected from the illuminated material in multiple spectral channels. The stack of speckle field images includes multiple speckle field images each being recorded in a respectively different spectral channel. Statistical properties of the speckle field images in the stack of speckle field images are analyzed to determine at least one property of the illuminated material. | 02-20-2014 |
20140092390 | APPARATUS AND METHOD FOR OBTAINING SPECTRAL IMAGE - An apparatus for obtaining spectral image includes a variable spectral element capable of changing its spectral characteristics, a transmission wavelength setting unit for setting a wavelength of light to be transmitted by the variable spectral element, a variable spectral element control unit changing a first control of the variable spectral element and a second control of the variable spectral element for controlling spectral characteristics of the variable spectral element to each other, an image capturing unit capturing an image that is formed by light transmitted by the variable spectral element, and an image correction unit acquiring a difference image between a first image captured in the first control and a second image captured in the second control. | 04-03-2014 |
20140125985 | Multi-Operations Sensor System - A sensor suite comprising a first electronic imaging element such as an LWIR imager element and a second imaging element such as a visible imager element. The transmitter operates with a plurality of selectable beam-forming optics or a tilt-tip element. The optics for the system may be configured in a Cassegrain-type configuration in cooperation with a plurality of beam-splitting elements to permit different ranges of the received optical input to be provided respectively to the first and second electronic imagers. One or a plurality of laser illuminator analysis spectrometers are provided for the detection and characterizing of incoming laser illumination from an external source which may be in the form of a micro-lamellar spectrometer element. | 05-08-2014 |
20140139840 | Spatial Frequency Swept Interference Illumination - Spatial frequency swept interference (SFSI) illumination and imaging methods and devices that interfere two collimated coherent beams to generate an interference pattern of a plurality of illuminating sheets with sweeping spatial frequency. | 05-22-2014 |
20140204386 | IMAGE MEASURING METHOD AND IMAGE MEASURING APPARATUS - [Problem] Image artifacts caused by noises in clock signals are suppressed. | 07-24-2014 |
20140233035 | BROADBAND OR MID-INFRARED FIBER LIGHT SOURCES - An optical system for use in an imaging procedure includes one or more semiconductor diodes configured to generate an input signal beam with a wavelength shorter than 2.5 microns that is amplified and communicated through optical fiber(s) to a nonlinear element configured to broaden the spectral width to at least 50 nm through a nonlinear effect. A subsystem includes lenses or mirrors to deliver an output beam having a broadened spectrum to an Optical Coherence Tomography apparatus with a sample and reference arm to perform imaging for characterizing the sample. The delivered output beam has a temporal duration greater than about 30 picoseconds, a repetition rate between continuous wave and Megahertz or higher, and a time averaged intensity of less than approximately 50 MW/cm | 08-21-2014 |
20140253924 | SPECTROMETER - A spectrometer includes: a wavelength-variable interference filter that can change a wavelength of selected light and disperses light from a measurement target; an imaging unit that receives light components with a plurality of wavelengths which are dispersed by the wavelength-variable interference filter and acquires a plurality of spectral images; a positional deviation amount detection unit that selects a standard image from the plurality of spectral images acquired by the imaging unit and detects a positional deviation amount of a pixel position which receives light from a predetermined position of the measurement target between the standard image and at least one of the spectral images other than the standard image; and a position correction unit that positions the spectral images other than the standard image on the basis of the detected positional deviation amount. | 09-11-2014 |
20140354999 | Ultracompact Fabry-Perot Array For Ultracompact Hyperspectral Imaging - Techniques for hyperspectral imaging, including a device for hyperspectral imaging including at least one tunable interferometer including a thin layer of material disposed between two or more broadband mirrors. Electrodes placed on either side of the tunable interferometer can be coupled to a voltage control circuit, and upon application of a voltage across the tunable interferometer, the distance between the mirrors can be modulated by physically altering the dimensions of the thin layer of material, which can uniformly load the broadband mirrors. Physically altering the dimensions of the thin layer of material can include one or more of deformation of a soft material, piezostrictrive actuation of a piezostrictrive material, or electrostrictive actuation of an electrostrictive material. | 12-04-2014 |
20140355000 | DRIVE CONTROL METHOD OF OPTICAL COHERENCE TOMOGRAPHY APPARATUS - A drive control method of an SD-OCT system which includes a light source including an SLD, which is a superluminescent diode, and a drive control unit that drive-controls the SLD, and a spectroscope including a linear sensor, and performs a spectroscopic process on returned light, which is emitted from the light source and passes through a reference optical system and an irradiation optical system, by using the spectroscope and obtains an optical coherence tomographic image based on spectrum information of light obtained by the spectroscopic process. When the drive control unit generates a drive waveform having three or more current values and periodically changes the drive waveform to one of the current values, the period is set to an integer multiple of a period in which the linear sensor acquires the spectrum information and a spectral shape is controlled to be a shape required by the SD-OCT system. | 12-04-2014 |
20150043001 | SPECTRAL CHARACTERISTICS MEASUREMENT DEVICE AND SPECTRAL CHARACTERISTICS MEASUREMENT METHOD - The present invention causes measurement light, emitted from an object and to be measured, to enter a fixed mirror and a movable mirror forming interfering light between the measurement light reflected by the fixed mirror and measurement light reflected by the movable mirror. Change to the intensity of the interference light of measurement light is obtained by moving the movable mirror unit, acquiring the interferogram of measurement light. Reference light of a narrow wavelength band included in a wavelength band of the measurement light enters the fixed mirror and the movable mirror, forming interference light of the reference light. The movable mirror is moved to correct the interferogram of measurement light, which is at the same wavelength as the reference light in the measurement light, and the reference light, and a spectrum of the measurement light is acquired based on the corrected interferogram. | 02-12-2015 |
20150124259 | Method For Biodynamic Spectroscope Imaging - Systems and methods for imaging small (˜1 mm thick) living biological specimen is provided to enable the generation of functional 3D images of living tissue for evaluating the effect of an external perturbation on the health of the specimen. A fluctuation power spectrum is constructed for each pixel of a holographic 3D image of the specimen over time and subject to the external perturbation. A normalized spectrum of dynamic intensity as a function of frequency is generated for each pixel. The normalized spectra for each pixel is filtered according to a selected frequency range from among characteristic frequencies corresponding to dynamic activity of naturally occurring biological events within the specimen to provide data corresponding only to the dynamic activity associated with the selected frequency range. | 05-07-2015 |
20150292860 | METHOD AND APPARATUS FOR PROCESSING THE SIGNAL IN SPECTRAL DOMAIN INTERFEROMETRY AND METHOD AND APPARATUS FOR SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY - Real-time depth measurements in sensing in spectral domain interferometry and for en-face and cross section image production in optical coherence tomography can operate without any need to linearize the data to maximize the output signal and achieve the theoretical depth resolution. Novel interferometry is disclosed, where parameters of a master interferometer dictate the results in a slave interferometer. The master interferometer can be the same measuring interferometer used in two stages. The master interferometer parameters are at least optical path difference (OPD) or the speed of variation of the OPD in the master interferometer. Coherence gated data are produced from selected axial positions which can be from positive or negative optical path differences, in parallel, enabling generation of en-face (C-scan) OCT images simultaneously from several depths, free from mirror terms, and production of A-scans and B-scan OCT images using plural reflectivity values measured in parallel from different depths within A-scans. | 10-15-2015 |
20150316416 | OPTICAL MODULE AND IMAGING SYSTEM - An optical module includes a variable wavelength interference filter that has a pair of reflection films facing one another, and that emits light with a wavelength according to the gap dimensions of the pair of reflection films; an incident side optical system as a negative power lens group that guides an incident luminous flux to the variable wavelength interference filter; and a light guiding optical system as a positive power lens group on which a luminous flux passing through the variable wavelength interference filter is incident, in which the incident side optical system guides the incident luminous flux to the variable wavelength interference filter as a luminous flux in which the principal ray is parallel with respect to the optical axis (central optical axis) orthogonal to the pair of reflection films and that is scattered with respect to the principal ray, and the light guiding optical system makes the luminous flux scattered with respect to the principal ray a parallel luminous flux. | 11-05-2015 |
20150366451 | OPTICAL IMAGING DEVICE AND METHOD FOR IMAGING A SAMPLE - According to embodiments of the present invention, an optical imaging device is provided. The optical imaging device includes an optics arrangement configured to generate an extended-source illumination pattern including a plurality of separate spectral bands, and to illuminate a respective section of a sample to be imaged with a respective spectral band of the plurality of separate spectral bands, wherein the optics arrangement is further configured to form an interference signal from a sample light comprising respective return lights from respective sections of the sample illuminated by respective spectral bands of the extended-source illumination pattern, and a reference light, and a detector configured to receive the interference signal for generating an image corresponding to the sections of the sample. According to further embodiments of the present invention, a method for imaging a sample and a method for generating an image are also provided. | 12-24-2015 |
20150377706 | SPECTROSCOPIC IMAGING APPARATUS AND SPECTROSCOPIC IMAGING METHOD - A spectroscopic camera is provided with a pair of reflecting films, and a wavelength variable interference filter including an electrostatic actuator which can change a size of the gap between the pair of reflecting films, an imaging unit which includes a plurality of pixels which is disposed in a two-dimensional array structure, and receives the light transmitted to the wavelength variable interference filter, and a received-light wavelength acquiring unit which acquires a central wavelength of the light which is incident on the pixel with respect to each of the pixels in the imaging unit, in which the received-light wavelength acquiring unit acquires the central wavelength based on an incidence angle in a position where the light which is received in each of the pixels is incident to the pair of reflecting films. | 12-31-2015 |
20160011049 | CHEMICAL MAPPING USING THERMAL MICROSCOPY AT THE MICRO AND NANO SCALES | 01-14-2016 |
20160061661 | SPECTROSCOPIC IMAGE ACQUIRING APPARATUS AND SPECTROSCOPIC IMAGE ACQUIRING METHOD - A spectroscopic camera is provided with a wavelength variable interference filter including a pair of reflection films and an electrostatic actuator for changing a size of a gap between the reflection films; an imaging unit including a plurality of imaging pixels; and a filter control unit for controlling the electrostatic actuator based on light-received wavelength data in which a control amount for receiving light of a target wavelength is recorded with respect to each of the imaging pixels of the imaging unit. An acquisition order of the target wavelength emitted from the wavelength variable interference filter is set for each of the imaging pixels, and the acquisition order is set in a descending order of the driving amount of a gap, and thus a value for emitting the light of the target wavelength in the set acquisition order is recorded as the light-received wavelength data. | 03-03-2016 |