Having Optical Gating Means Patents (Class 356/330)
  • Patent number: 10969742
    Abstract: Dual or multi-modulation display systems are disclosed that comprise projector systems with at least one modulator that may employ non-mechanical beam steering modulation. Many embodiments disclosed herein employ a non-mechanical beam steering and/or polarizer to provide for a highlights modulator.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: April 6, 2021
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Douglas J. Gorny, Martin J. Richards
  • Patent number: 10697888
    Abstract: A system and method are disclosed for configuring an integrated computational element (ICE) to measure a property of a sample of interest. The system includes an illumination source to provide a sample light which is reflected from or transmitted through a sample. A dispersive element disperses the sample light into wavelength portions. An intensity modulation device having an array of electronically controllable modulation elements is disclosed that forms a pattern which modulates the dispersed sample light. Collection optics focuses the modulated sample light on a detector, which generates a signal that correlates to a property of the sample. The electronically controllable modulation elements can be readily altered to conform to a different measurable property of a sample of interest as desired.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: June 30, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael T. Pelletier, David L. Perkins, Li Gao
  • Patent number: 10638061
    Abstract: There is provided an active-pixel image sensor that uses a method of offsetting and interleaving to increase its resolution. In a basic configuration of the active-pixel image sensor, light from one optical transmitter is diffracted to create one diffraction pattern, and then light from another optical transmitter is diffracted to create another diffraction pattern. Light from further optical transmitters may also be diffracted to create further diffraction patterns sequentially after that. These diffraction patterns are offset from one another and then interleaved using time division multiplexing so as to create a single pixel output that has higher resolution than is feasible with an active-pixel image sensor that only utilizes one optical transmitter per pixel or that does not use diffraction patterns to create a larger field of view.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: April 28, 2020
    Assignee: ANALOG DEVICES GLOBAL UNLIMITED COMPANY
    Inventors: Libo Meng, Alexander Policht
  • Patent number: 10534316
    Abstract: Dual or multi-modulation display systems are disclosed that comprise projector systems with at least one modulator that may employ non-mechanical beam steering modulation. Many embodiments disclosed herein employ a non-mechanical beam steering and/or polarizer to provide for a highlights modulator.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: January 14, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Douglas J. Gorny, Martin J. Richards
  • Patent number: 10528003
    Abstract: A light modulation device for a display device, in particular a holographic display device, for the representation of two-dimensional and/or three-dimensional reconstructed scenes. The light modulation device includes at least one spatial light modulator including modulation elements for modulating incident light and an optical element of known optical characteristics. The light incident on the at least one spatial light modulator is sufficiently coherent. The at least one spatial light modulator and the optical element are combined with one another in such a way that the optical element scatters the unmodulated light emanating from the spatial light modulator into an angular range.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: January 7, 2020
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventor: Ralf Haussler
  • Patent number: 10408753
    Abstract: A method for calculating electromagnetic scattering properties of a finite periodic structure having a direction of periodicity is disclosed. The method numerically calculates electromagnetic scattering properties using spatial discretization in the direction of periodicity and numerically calculates electromagnetic scattering properties using spectral discretization in a direction orthogonal to the direction of periodicity.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: September 10, 2019
    Assignee: ASML Netherlands B.V.
    Inventors: Maxim Pisarenco, Irwan Dani Setija
  • Patent number: 10282630
    Abstract: An optical system for capturing an image using compressive sensing includes: a digital micromirror device (DMD) array; an optical lens system; a first optical detector array; a first optical channel for projecting spatial information onto the first detector array; a second optical detector array; a second optical channel; a spectral filter and a polarization filter for projecting spectral and polarization information onto the second detector array; and an image processor to control the DMD array to generate a first and a second set of samples of the image using a sampling rate lower than required by the Shannon-Nyquist sampling theorem, and to reconstruct the image from the samples collected and digitized by the first and second optical detector arrays.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: May 7, 2019
    Assignee: RAYTHEON COMPANY
    Inventors: Shubha Kadambe, Kalin Spariosu, Jr., Juan C. Sotelo
  • Patent number: 10061266
    Abstract: There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: August 28, 2018
    Assignee: Envisics Ltd.
    Inventor: Jamieson Christmas
  • Patent number: 9374563
    Abstract: One embodiment disclosed is an imaging system that includes a first optical component configured to receive electromagnetic energy associated with an image of an object. The system also includes a second optical component configured to split and diffract the received electromagnetic energy into a plurality of beams of different wavelengths of electromagnetic energy. The system also includes an imaging array configured to receive the plurality of beams and to selectively attenuate one or more of the plurality of beams. The system also includes an imaging detector configured to receive and capture the one or more of the plurality of beams after the beams have been selectively attenuated and recombined and re-focused into a spectrally altered version of the image.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: June 21, 2016
    Assignee: Raytheon Company
    Inventor: Donald J. Denis
  • Patent number: 9182592
    Abstract: An optical filtering device and an optical inspection apparatus for detecting a defect in a high sensitivity using an optical filtering device which includes a shutter array formed in a two-dimensionally on an optically opaque thin film produced on a SOI wafer and the SOI wafer is removed at portions thereof on the lower side of the shutter patterns to form perforation portions while working electrodes are formed at the remaining portion of the SOI wafer, a glass substrate having electrode patterns formed on the surface thereof and having the shutter array mounted thereon, and a power supply section for supplying electric power to the electrode patterns formed on the glass substrate and the working electrodes of the SOI wafer. And the working electrodes is controlled to cause the shutter patterns to carry out opening and closing movements with respect to the perforation portions to carry out optical filtering.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: November 10, 2015
    Assignees: HITACHI, LTD., THE UNIVERSITY OF TOKYO
    Inventors: Taketo Ueno, Toshihiko Nakata, Yukihiro Shibata, Shun'ichi Matsumoto, Atsushi Taniguchi, Hiroshi Toshiyoshi, Takuya Takahashi, Kentaro Motohara
  • Publication number: 20150146203
    Abstract: A bio-chip package comprises a substrate a first layer over the substrate comprising an image sensor. The bio-chip package also comprises a second layer over the first layer. The second layer comprises a waveguide system a grating coupler. The bio-chip package also comprises a third layer arranged to accommodate a fluid between a first-third layer portion and a second-third layer portion, and to allow the fluid to pass from a first side of the third layer to a second side of the third layer. The third layer comprises a material having a predetermined transparency with respect to a wavelength of a received source light, the waveguide system is configured to direct the received source light to the grating coupler, and the image sensor is configured to determine a change in the wavelength of the source light caused by a coupling between the source light and the fluid.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 28, 2015
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Jui Hsieh LAI, Ying-Hao KUO
  • Patent number: 8941046
    Abstract: Optical computing devices are disclosed. One exemplary optical computing device includes an electromagnetic radiation source configured to optically interact with a sample and first and second integrated computational elements arranged in primary and reference channels, respectively. The first and second integrated computational elements produce first and second modified electromagnetic radiations, and a detector is arranged to receive the first and second modified electromagnetic radiations and generate an output signal corresponding to the characteristic of the sample.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: January 27, 2015
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Robert Freese, Christopher Michael Jones, David Perkins, Michael Simcock, William Soltmann
  • Patent number: 8749782
    Abstract: Computer driven systems and methods involving at least one electromagnetic beam focuser and digital light processor that in combination serve to position selected wavelengths in a spectroscopic electromagnetic beam onto a small spot on a sample, and direct the one or more selected wavelengths reflected by the sample into, while diverting other wavelengths away from, a detector.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: June 10, 2014
    Assignee: J.A. Woollam Co., Inc.
    Inventors: Martin M. Liphardt, Galen L. Pfeiffer
  • Patent number: 8603772
    Abstract: This invention provides a novel methods and devices for measurement of particle concentration or changes in particle concentration over a wide linear range. The invention comprises one or more radiation sources and one or more detectors contained in a housing which is interfaced to a medium containing particulate matter. The one or more radiation sources are directed into the medium, scattered or transmitted by the particulate matter, and then some portion of the radiation is detected by the one or more detectors. Methods for confining the measurement to a specific volume within the medium are described. Algorithms are provided for combining the signals generated by multiple source-detector pairs in a manner that results in a wide linear range of response to changes in particle concentration. In one embodiment the sensor provides non-invasive measurements of biomass in a bioreactor. In another embodiment an immersible probe design is described, which may be suited for one-time use.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: December 10, 2013
    Assignee: Bug Lab LLC
    Inventors: Martin P. Debreczeny, Jaime Romero, Ethan Petersen
  • Publication number: 20120212739
    Abstract: A system and method of photon trapping spectroscopy to vary the path length of light for use in spectroscopy. The systems and method include a rotating reflector with slits for selectively permitting light to enter and exit into a reflection cavity containing a sample to be analyzed. After entering the cavity, but before exiting, the light is trapped and repeatedly reflects back and forth through a sample, effectively increasing the path length of light through a sample. The effective path length is quickly adjustable by altering the rotation speed of the rotating reflector to alter the time in which the light is trapped within the cavity. The systems and methods provide a spectroscope with a wide dynamic range, low detection limits, and usable with broadband and monochromatic light sources throughout the optical region (ultraviolet to infrared).
    Type: Application
    Filed: February 21, 2012
    Publication date: August 23, 2012
    Applicant: UWM RESEARCH FOUNDATION, INC.
    Inventors: Joseph H. Aldstadt, III, Peter Geissinger, Beth A. Ruddy, Jörg C. Woehl, John A. Frost
  • Patent number: 8190025
    Abstract: A wavelength selective switch utilizing aperture-shared optics and functionally distinct planes of operation that enables high fiber port counts, such as 1×41, and multiplicative expansion, such as to 1×83 or 1×145, by utilizing elements optimized for performance in one of the functionally distinct planes of operation without affecting the other plane.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: May 29, 2012
    Assignee: Olympus Corporation
    Inventors: Harry W. Presley, Michael L. Nagy
  • Patent number: 8144321
    Abstract: According to one embodiment of the present invention, a system for encoding an optical spectrum includes a dispersive element, a digital micromirror device (DMD) array, a detector, and a controller. The dispersive element receives light from a source and disperses the light to yield light components of different wavelengths. The digital micromirror device (DMD) array has micromirrors that modulate the light to encode an optical spectrum of the light. The detector detects the light that has been modulated. The controller generates an intensity versus time waveform representing the optical spectrum of the detected light.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: March 27, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Walter M. Duncan, James N. Malina, Rajeev Ramanath
  • Patent number: 8102584
    Abstract: An apparatus includes a reconfigurable spatial light modulator capable of spatially modulating an incident wavefront responsive to an image formed on the modulator. A light source is configured to direct a coherent illumination light beam towards the modulator such that the modulator produces a modulated outgoing light beam therefrom. A filter is configured to spatially filter a light pattern formed by the outgoing light beam on a plane to selectively transmit light from a plurality of diffraction peaks therein.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: January 24, 2012
    Assignee: Alcatel Lucent
    Inventors: Cristian A. Bolle, Christopher D. W. Jones, Roland Ryf, Maria E. Simon
  • Publication number: 20110149281
    Abstract: Systems and methods determining amplitude and phase versus frequency of an incoming beam of pulsed laser light. An apparatus is set to an initial configuration to split the incoming beam into two beams of substantially equal intensity, delay one of the two split beams for a delay period t and recombine the two split beams to form a recombined beam. The recombined beam shines onto a thick SHG crystal at rotation angle ? and light emitted from the thick SHG crystal is detected as data and stored with reference to the delay period t and the angle ?. The thick SHG crystal is rotated by an angle ?? and the steps of splitting, delaying, recombining, shining, detecting, storing, and rotating are repeated until the thick SHG crystal has completed 360° of rotation. The delay period is increased by ?t and the steps of splitting, delaying, recombining, shining, detecting, storing, rotating, repeating and increasing are repeated until a selected beam delay period range has been completed.
    Type: Application
    Filed: October 14, 2010
    Publication date: June 23, 2011
    Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE
    Inventors: Armin T. Ellis, Ulf Osterberg
  • Patent number: 7944557
    Abstract: Method and apparatus for analyzing radiation using analyzers and encoders employing the spatial modulation of radiation dispersed by wavelength or imaged along a line.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: May 17, 2011
    Assignee: Guidedwave, Inc
    Inventor: Thomas W. Hagler
  • Patent number: 7916292
    Abstract: A concave diffraction grating device, a reflective dispersion device, and a spectral device of the invention include a diffraction grating plane having an aspherical configuration, wherein the diffraction grating plane is symmetrical in a predetermined direction, and asymmetrical in a direction orthogonal to the predetermined direction in such a manner that the curvature of one end portion of the diffraction grating plane in the direction orthogonal to the predetermined direction is gradually decreased, and the curvature of the other end portion thereof is gradually increased. The concave diffraction grating device, the reflective dispersion device, and the spectral device with the above arrangement have desirable slit image forming performance with respect to all the wavelengths in a visible region, and are suitable for mass-production.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: March 29, 2011
    Assignee: Konica Minolta Sensing, Inc.
    Inventors: Kenji Konno, Kenji Imura, Masayuki Yamada
  • Patent number: 7777207
    Abstract: An image projection system for presenting an image to a viewer comprises an electromagnetic radiation source configured to generate radiation having multiple spectral characteristics, and multiple independently operable optical switches configured to selectively transmit, reflect, and/or block radiation from the radiation source to the viewer. The viewed image is made up of pixels defined by the selective operation of the optical switches with the radiation source.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: August 17, 2010
    Assignee: Raytheon Company
    Inventor: Theodore B. Bailey
  • Patent number: 7777878
    Abstract: Application of digital light processor (DLP) systems in monochromator, spectrophotometer or the like systems to mediate selection of individual wavelengths, and/or to image elected regions of a sample in an imaging ellipsometer, imaging polarimeter, imaging reflectometer, imaging spectrophotometer, and/or to provide chopped beams.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: August 17, 2010
    Assignee: J.A. Woollam Co., Inc.
    Inventor: Martin M. Liphardt
  • Patent number: 7773218
    Abstract: Embodiments of the present invention relate to systems and methods for spectral imaging. Electromagnetic energy emanating from an object is passed through a first dispersive element, a coded aperture, and a second dispersive element to a detector plane. A wavelength-dependent shift is created by the first dispersive element. The coded aperture modulates the image emanating from the first dispersive element. The wavelength-dependent shift is removed from the modulated image by the second dispersive element producing a wavelength-independent image measured by the detector. A spectral image of the object is calculated from the measured image, a wavelength-dependent shift of the first dispersive element, the code of the coded aperture, and a wavelength dependent shift of the second dispersive element. A spectral image can be calculated from measurements obtained in a single time step and from a number of measurements that is less than the number of elements in the spectral image.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: August 10, 2010
    Assignee: Duke University
    Inventors: David J. Brady, Michael E. Gehm
  • Patent number: 7719680
    Abstract: A spectroscope designed to utilize an adaptive optical element such as a micro mirror array (MMA) and two distinct light channels and detectors. The devices can provide for real-time and near real-time scaling and normalization of signals.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: May 18, 2010
    Assignee: Custom Sensors and Technology
    Inventors: Sean M. Christian, Jess V. Ford, Mike Ponstingl, Sven Kruger, Margaret C. Waid, Bryan W. Kasperski, Entique Prati
  • Patent number: 7652765
    Abstract: A hyper-spectral imaging system comprises imaging foreoptics (1020) to focus on a scene or object of interest (1010) and transfer the image of said scene or object (1010) onto the focal plane of a spatial light modulator (1030), a spatial light modulator (1030) placed at a focal plane of said imaging foreoptics (1020), an imaging dispersion device (1040) disposed to receive an output image of the spatial light modulator (1030), and an image collecting device disposed to receive the output of the imaging dispersion device (1040).
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: January 26, 2010
    Assignee: Plain Sight Systems, Inc.
    Inventors: Frank Geshwind, Andreas C. Coppi, Richard A. Deverse, Ronald R. Coifman, William G. Fateley
  • Publication number: 20100014082
    Abstract: The invention relates to angle-limiting optical reflectors and optical dispersive devices such as optical spectrum analyzers using the same. The reflector has two reflective surfaces arranged in a two-dimensional corner reflector configuration for reflecting incident light back with a shift, and includes two prisms having a gap therebetween that is tilted to reflect unwanted light and transmit wanted light. A two-pass optical spectrum analyzer utilizes the reflector to block unwanted multi-pass modes that may otherwise exist and degrade the wavelength selectivity of the device.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 21, 2010
    Applicants: JDSU Deutschland GmbH
    Inventor: Eberhard Loecklin
  • Patent number: 7573023
    Abstract: The present invention is directed to an arrangement and the associated method for the compensation of the temperature dependency of detectors in spectrometers. In the solution according to the invention, the arrangement for compensation of the temperature dependency of detectors in spectrometers comprises an illumination unit, an entrance slit, an imaging grating, a detector and a controlling and evaluating unit. A second temperature gauge for the ambient temperature is provided in addition to an existing first temperature gauge and a temperature regulating unit. In the method according to the invention, a temperature regulating unit is controlled in such a way by a controlling and evaluating unit in the evaluation of the measurement values determined by two temperature gauges that the temperature of the detector remains constant.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: August 11, 2009
    Assignee: Carl Zeiss MicroImaging GmbH
    Inventors: Felix Kerstan, Ulrich Zeh
  • Patent number: 7541600
    Abstract: A method and apparatus for accurately retrieving the position of an optical feature. The method uses the optical properties of biaxial crystals to conically refract the optical feature and transform the image of the optical feature to a circular ring structure. The position of the optical feature is then calculated by locating a center point associated with the circular ring structure.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: June 2, 2009
    Assignee: The Regents of the University of California
    Inventors: Daniel Neuhauser, Gabriel Y. Sirat
  • Patent number: 7505130
    Abstract: A class of aperture coded spectrometer is optimized for the spectral characterization of diffuse sources. The instrument achieves high throughput and high spatial resolution by replacing the slit of conventional dispersive spectrometers with a spatial filter or mask. A number of masks can be used including Harmonic masks, Legendre masks, and Hadamard masks.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: March 17, 2009
    Assignee: Duke University
    Inventors: David J. Brady, Scott T. McCain, Michael E. Gehm, Michael E. Sullivan, Prasant Potuluri
  • Publication number: 20090040516
    Abstract: A spectroscopic system having a coded aperture as a gating device. Light of a Raman scattering may enter the system and encounter a mask gate. The mask may have a matrix of micro mirrors some of which pass light on to a diffraction grating when the gate is on. Some of the mirrors will not pass on light thereby resulting in coded light to the grating. If the gate is off, then no light is passed on to the grating. The grating may pass the coded and spectrally spread light on to a detector array. The array signals representing the light on the array may go to a processor so one can obtain information about the target that emanated the Raman scatter when impinged by a light beam.
    Type: Application
    Filed: August 10, 2007
    Publication date: February 12, 2009
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Bernard S. Fritz, Paul E. Bauhahn, James A. Cox, Brian C. Krafthefer, Tzu-Yu Wang
  • Patent number: 7469081
    Abstract: Methods and apparatus for reducing a thermal load on an optical head are described. Waste light is captured at one or more locations in the optical head and directed to a location that is thermally isolated from the one or more locations in the optical head using or more optical fibers.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: December 23, 2008
    Assignee: Mobius Photonics, Inc.
    Inventors: Mark W. Byer, Manuel J. Leonardo
  • Patent number: 7463179
    Abstract: An optical signal is compressively sampled using an optical component to encode multiplex measurements. A mapping from the optical signal to a detector array is created using spatial and/or spectral dispersion. Signals transmitted by a plurality of transmissive elements of the optical component are detected at each sensor of a plurality of sensors of the detector array dispersed spatially with respect to the optical component. Each sensor of a plurality of sensors produces a measurement resulting in a number of measurements. A number of estimated optical signal values is calculated from the number of measurements and a transmission function. The transmission function is selected so that the number of measurements is less than the number of estimated optical signal values.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: December 9, 2008
    Assignee: Duke University
    Inventors: David J. Brady, Nikos Pitsianis, Xiaobai Sun, Prasant Potuluri
  • Patent number: 7440098
    Abstract: A spectroscope designed to utilize an adaptive optical element such as a micro mirror array (MMA) and two distinct light channels and detectors. The devices can provide for real-time and near real-time scaling and normalization of signals.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: October 21, 2008
    Assignee: Custom Sensors and Technology
    Inventors: Sean M. Christian, Jess V. Ford, Mike Ponstingl, Sven Kruger, Margaret C. Waid, Bryan W. Kasperski, Enrique Prati
  • Patent number: 7430044
    Abstract: An encoder spectrograph is used to analyze radiation from one or more samples in various configurations. The radiation is analyzed by spatially modulating the radiation after it has been dispersed by wavelength or imaged along a line. Dual encoder spectrographs may be used to encode radiation using a single modulator. An encoder spectrograph may be used wherein the first optics comprises a diffraction grating that is optimized for an annular-shaped intercept between the dispersed image and the radiation filters on a modulator.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: September 30, 2008
    Assignee: Aspectrics, Inc.
    Inventor: Thomas W. Hagler
  • Patent number: 7426028
    Abstract: Optical breakdown by predetermined laser pulses in transparent dielectrics produces an ionized region of dense plasma confined within the bulk of the material. Such an ionized region is responsible for broadband radiation that accompanies a desired breakdown process. Spectroscopic monitoring of the accompanying light in real-time is utilized to ascertain the morphology of the radiated interaction volume. Such a method and apparatus as presented herein, provides commercial realization of rapid prototyping of optoelectronic devices, optical three-dimensional data storage devices, and waveguide writing.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: September 16, 2008
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Christopher W. Carr, Stavros Demos, Michael D. Feit, Alexander M. Rubenchik
  • Patent number: 7423748
    Abstract: An encoder spectrograph is used to analyze radiation from one or more samples in various configurations. The radiation is analyzed by spatially modulating the radiation after it has been dispersed by wavelength or imaged along a line. Dual encoder spectrographs may be used to encode radiation using a single modulator. An encoder spectrograph includes a modulator with radiation filters having non-equal widths and centered at non-equal intervals along the encoding axis of the modulator.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: September 9, 2008
    Assignee: Aspectrics, Inc.
    Inventor: Thomas W. Hagler
  • Patent number: 7420673
    Abstract: A method of generating a design pattern for a spatial radiation modulator to encode two or more selected spectral components in one or more spectral ranges for the chemometric analysis of a group of analytes. The method includes obtaining a corresponding spectrum for each of the analytes, defining a set of initial spectral windows, constructing a chemometric matrix to relate concentrations of the analytes to intensities of the spectral components, deriving optimized spectral windows, and translating the center wavelength and the bandwidth of each of the optimized spectral windows into a corresponding optimized annular region on the modulator.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: September 2, 2008
    Assignee: Aspectrics, Inc.
    Inventor: Thomas W. Hagler
  • Patent number: 7405825
    Abstract: The optical analysis system (20) for determining an amplitude of a principal component of an optical signal comprises a multivariate optical element (10) for reflecting the optical signal and thereby weighing the optical signal by a spectral weighing function, and a detector (9, 9P, 9N) for detecting the weighed optical signal. The optical analysis system (20) may further comprise a dispersive element (2) for spectrally dispersing the optical signal, the multivariate optical element being arranged to receive the dispersed optical signal. The blood analysis system (40) comprises the optical analysis system (20) according to the invention.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: July 29, 2008
    Assignee: Koninklijke Philiips Electronics N. V.
    Inventors: Frank Jeroen Pieter Schuurmans, Michael Cornelis Van Beek, Levinus Pieter Bakker, Wouter Harry Jacinth Rensen, Bernardus Hendrikus Wilhelmus Hendriks, Robert Frans Maria Hendriks, Thomas Steffen
  • Patent number: 7357741
    Abstract: A high output light source, such as a stage lighting luminaire, produces light along a path. The belt which drives a driven device is kept away from that path by passing it around the opposite side of the pulley.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: April 15, 2008
    Assignee: Production Resource Group, L.L.C.
    Inventor: Nigel Evans
  • Patent number: 7336353
    Abstract: Embodiments of the present invention relate to systems and methods for spectral imaging. In one embodiment, an image of the scene is formed on a coded aperture of a spectrometer. A coded image from the coded aperture is detected on a two-dimensional detector array of the spectrometer through a spectrally dispersive element of the spectrometer. Data from the two-dimensional detector array is collected as the coded image is varied over time. The spectral image is estimated from the data collected and the variation of the coded image over time. The data collected is varied over time through translation, rotation, and defocus.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: February 26, 2008
    Assignee: Duke University
    Inventors: David J. Brady, Michael E. Gehm
  • Patent number: 7301625
    Abstract: A class of aperture coded spectrometer is optimized for the spectral characterization of diffuse sources. The instrument achieves high throughput and high spatial resolution by replacing the slit of conventional dispersive spectrometers with a spatial filter or mask. A number of masks can be used including Harmonic masks, Legendre masks, and Hadamard masks.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: November 27, 2007
    Assignee: Duke University
    Inventors: David Brady, Scott T. McCain, Michael E. Gehm, Michael E. Sullivan, Prasant Potuluri
  • Patent number: 7289209
    Abstract: An imaging system having a programmable spectral transmission function, that includes an input image plane for passing input imaging light into the imaging system; a dispersive optical system for separating the input imaging light into its corresponding spectral components, thus creating spectrally-dispersed image components along a spectrally-dispersed direction. Also included is a spatial light modulator, having a plurality of operational states, for selecting spectral components for imaging; and having a width along the spectrally-dispersed direction; a de-dispersive optical system for re-combining the selected spectral components for imaging onto a detector array; and means for scanning the input imaging light from an object of interest to generate an output area image.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: October 30, 2007
    Assignee: Eastman Kodak Company
    Inventors: Marek W. Kowarz, James G. Phalen, Jeffrey Daniel Newman
  • Patent number: 7283241
    Abstract: The disclosure generally relates to a multimode imaging apparatus for simultaneously obtaining multiple wavelength-discriminative spectral images of a sample.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: October 16, 2007
    Assignee: Chemimage Corp.
    Inventors: Xinghua Wang, Thomas C. Voigt, David Tuschel, Chenhui Wang, Patrick J. Treado
  • Patent number: 7262846
    Abstract: An encoder spectrograph is used to analyze radiation from one or more samples in various configurations. The radiation is analyzed by spatially modulating the radiation after it has been dispersed by wavelength or imaged along a line. Dual encoder spectrographs may be used to encode radiation using a single modulator.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: August 28, 2007
    Assignee: Aspectrics, Inc.
    Inventor: Thomas W. Hagler
  • Patent number: 7258456
    Abstract: A light filtering apparatus includes a first dispersion device, a spatial filter and a second dispersion device. The first dispersion device is arranged to cause spatial dispersion of an incident light beam as a function of its frequency. The spatial filter is arranged to filter the dispersed light beam so as to produce a spatially filtered resultant beam. The second dispersion device is arranged to recombine the dispersed and filtered light beam so as to produce an output light beam having a substantially similar spectrum at any position within the output beam cross-section.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: August 21, 2007
    Assignee: FFEI Limited
    Inventor: Martin Gouch
  • Patent number: 7248358
    Abstract: A spectral measurement device comprising an entrance aperture for receiving an electromagnetic energy and a mask located at the entrance aperture in the form of a two-dimensional encodement pattern. An optical element conditions the electromagnetic energy received from the mask for presentation to the spectral dispersion element and the and a spectral dispersion element disperses the electromagnetic energy in one or more dimensions. Additionally, the optical element conditions the dispersed electromagnetic energy onto an array of detector elements.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: July 24, 2007
    Assignee: Plain Sight Systems, Inc.
    Inventors: Frank Geshwind, Ronald R. Coifman, Andreas Coppi, Richard A. Deverse, William G. Fateley
  • Patent number: 7218435
    Abstract: This invention relates to reconfigurable spatial light modulators (SLM) incorporating a scatter plate. Computer generated diffraction patterns or holograms may be loaded on the (SLM) either as a single frame or as a series of frames for observation by an observer. In a preferred embodiment both an electrically addressable spatial light modulator (EASLM) and an optically addressable spatial light modulator (OASLM) are used. The (OASLM) may be formed of several smaller (OASLMs) arranged in a matrix format. The faster (EASLM) forms a light pattern on sub-areas of the large (OASLM) in turn to give a large display. The scatter plate is arranged at the output of the (SLM) nearest an observer. This scatter plate has a known characteristic and serves to increase the field of view and/or reduce the number of pixels required to give a holographic or two dimensional displays.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: May 15, 2007
    Assignee: F. Poszat Hu, L.L.C.
    Inventor: Christopher William Slinger
  • Patent number: 7180588
    Abstract: A spectral measurement device comprising an entrance aperture for receiving an electromagnetic energy and a mask located at the entrance aperture in the form of a two-dimensional encodement pattern. An optical element conditions the electromagnetic energy received from the mask for presentation to the spectral dispersion element and the and a spectral dispersion element disperses the electromagnetic energy in one or more dimensions. Additionally, the optical element conditions the dispersed electromagnetic energy onto an array of detector elements.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: February 20, 2007
    Assignee: Plain Sight Systems, Inc.
    Inventors: Frank Geshwind, Ronald R. Coifman, Andreas Coppi, Richard A. Deverse, William G. Fateley
  • Patent number: 7161673
    Abstract: The invention relates to a spectrometer (1) comprising a dispersive element of a light beam formed of a set of spectral components, the dispersive element generating spatial dispersion of the spectral components in the form of a dispersion spectrum (6) spatially spread, at least one photon detector (5, 52) comprising at least one detection element (51) being provided at one point of said dispersion. According to the invention, a matrix optical electromechanical device (3) is provided between the dispersive element and the detector in the dispersion spectrum, said electromechanical device being formed of a matrix of optical elements, each of the optical elements being able to send back a portion of the dispersion spectrum according to at least two directions in relation to a control signal, in order to enable the selection of at least one sub-assembly of the spectrum for said detection element. A method and an application of the spectrometer are claimed.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: January 9, 2007
    Assignee: Jobin Yvon S.A.S.
    Inventor: Edouard Da Silva