Using Fourier Transform Spatial Filtering Patents (Class 359/559)
  • Patent number: 10567626
    Abstract: An observation device includes: a structured illumination section; a phase difference measurement illumination section; a phase contrast lens that has a phase plate for dimming illumination light for phase difference measurement, where the illumination light for phase difference measurement is incident into the lens, and the structured illumination light is incident into the lens from a side opposite to an incidence side of the ring-shaped illumination; a detection section that detects reflected light of the structured illumination light; and an observation section that images the illumination light for phase difference measurement. When Fourier transform is performed on the structured illumination light, a spatial frequency of the structured illumination light is set on a high-frequency side or a low-frequency side with respect to a position of the phase plate on optical Fourier space.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: February 18, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Kenta Matsubara
  • Patent number: 10444522
    Abstract: Embodiments of the invention generally relate to laser annealing systems with optics for imaging a pattern on a substrate. The optics may comprise an aperture or plurality of apertures which shape an image to be exposed on a surface of a substrate. The image may be determined by the shape of an aperture within the optics system.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: October 15, 2019
    Assignee: APPLIED MATERIALS, INC.
    Inventor: Douglas E. Holmgren
  • Patent number: 10272521
    Abstract: The invention refers to an apparatus for laser material processing having a beam deflecting unit (16) for deflecting the laser beam, a parallel-offsetting unit (14) including at least three reflecting mirrors (26, 28, 30), wherein one reflecting mirror (26) of the at least three reflecting mirrors for the parallel-offset of the laser beam is rotatable, and a focusing device (18) for focusing the laser beam on a workpiece (20) to be processed.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: April 30, 2019
    Assignee: SCANLAB GmbH
    Inventors: Hans-Joachim Muenzer, Martin Valentin
  • Patent number: 10228568
    Abstract: A photostructurable ceramic is processed using photostructuring process steps for embedding devices within a photostructurable ceramic volume, the devices including chemical, mechanical, electronic, electromagnetic, optical, and acoustic devices, all made in part by creating device material within the ceramic or by disposing a device material through surface ports of the ceramic volume, with the devices being interconnected using internal connections and surface interfaces.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: March 12, 2019
    Assignee: The Aerospace Corporation
    Inventor: Henry Helvajian
  • Patent number: 10191188
    Abstract: A lens system includes a first lens array assembly including a first plurality of cells, each cell of the first plurality of cells configured to exhibit a pair of Fourier transform lenses, and a second lens array assembly including a second plurality of cells, each cell of the second plurality of cells configured to exhibit a pair of Fourier transform lenses. The first and second lens array assemblies are positioned relative to one another along an optical axis of the lens system such that an image of an object is provided at an image conjugate distance from the second lens array assembly.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: January 29, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Karlton D. Powell
  • Patent number: 10140720
    Abstract: An optical correlator includes a first spatial light modulator arranged to receive light from a light source and configured to selectively attenuate the light; a first focusing layer arranged to receive the selectively-attenuated light from the first spatial light modulator and configured to focus the selectively-attenuated light; a first spacer layer substantially transparent to the light from the light source, the first focusing layer being disposed on the first spacer layer; a second spatial light modulator arranged in a Fourier optical relationship with respect to the first spatial light modulator and configured to selectively attenuate the focused light from the first focusing layer to provide twice-attenuated light, the second spatial light modulator being disposed on the first spacer layer opposite the first focusing layer; a second spacer layer substantially transparent to the light from the light source, the second spatial light modulator being disposed on the second spacer layer and positioned betwe
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: November 27, 2018
    Assignee: X Development LLC
    Inventors: Martin Friedrich Schubert, Michael Jason Grundmann
  • Patent number: 10133015
    Abstract: An optical connector includes an optical filter 36 that is disposed between an end surface and a lens, and includes a through-hole that transmits part of the output light, when an inner diameter of the through-hole of the optical filter is denoted by B, a distance from the end surface to the optical filter in the optical axis direction is denoted by L, a maximum transmitted light output angle of transmitted light that passes through the through-hole and has a smaller angle than a maximum output angle ? of output light is denoted by ??, and an outer diameter of a core of an optical fiber is denoted by A, B=2×L×tan ???A, and L>A/tan ??/2 are satisfied.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: November 20, 2018
    Assignee: YAZAKI CORPORATION
    Inventor: Motonori Miyanari
  • Patent number: 10120338
    Abstract: A holographic-stereogram-forming apparatus includes a laser beam source that generates a laser beam to be split into an object beam and a reference beam; a display that displays an original image corresponding to a substantially strip-shaped holographic element constituting a holographic stereogram containing parallax information in a horizontal direction; a diffusing unit provided on a light-emission side of the display and including optical elements having different thicknesses in a direction of light transmission, the optical elements being arranged in a matrix and each having a substantially rectangular shape with a vertical length being shorter than a horizontal length, the diffusing unit diffusing object beam more widely in the vertical direction than in the horizontal direction, the object beam to be diffused by the diffusing unit being generated by the display; and a condensing unit that condenses the object beam diffused by the diffusing unit on a hologram recording medium.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: November 6, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yasuhiro Ogasawara, Jiro Minabe, Shigetoshi Nakamura, Takashi Kikuchi, Masahiro Igusa, Motohiko Sakamaki
  • Patent number: 10090639
    Abstract: The subject invention includes a semiconductor laser with the laser having a DBR mirror on a substrate, a quantum well on the DBR mirror, and an interior CGH with a back propagated output for emitting a large sized Gaussian and encircling high energy. The DBR mirror has a plurality of GaAs/AlGaAs layers, while the quantum well is composed of AlGaAs/InGaAs. The CGH is composed of AlGaAs.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: October 2, 2018
    Assignee: Luminit LLC
    Inventors: Alkan Gulses, Russell Kurtz
  • Patent number: 10080084
    Abstract: In accordance with embodiments of the present disclosure, a system may include a digital correcting network for correcting for an intrinsic highpass filter of a microelectromechanical systems (MEMS) microphone such that a combined phase and magnitude response of a cascade of the intrinsic highpass filter and the digital correcting network substantially approximates the response of a target highpass filter.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: September 18, 2018
    Assignee: Cirrus Logic, Inc.
    Inventors: Sunder S. Kidambi, John C. Tucker, Aleksey Khenkin
  • Patent number: 10051240
    Abstract: An apparatus includes a light source configured for generating a coherent light beam having a wavelength, ?, a light detector, and beam-forming optics configured for receiving the generated light beam and for generating a plurality of substantially parallel Bessel-like beams directed into a sample in a first direction. Each of the Bessel-like beams has a fixed phase relative to the other Bessel-like beams. Imaging optics are configured for receiving light from a position within the sample that is illuminated by the Bessel-like beams and for imaging the received light onto the detector. The imaging optics include a detection objective having an axis oriented in a second direction that is non-parallel to the first direction, where the detector is configured for detecting light received by the imaging optics. A processor configured to generate an image of the sample based on the detected light.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 14, 2018
    Assignee: Howard Hughes Medical Institute
    Inventors: Robert E. Betzig, Kai Wang
  • Patent number: 10033911
    Abstract: An illumination assembly is provided for use with a light source and an illumination target. A first light collector can be disposed to receive and direct light from the light source. A first diffuser can be disposed at least partly between the first light collector and the illumination target. The first diffuser can be configured to diffuse at least part of the light directed by the first light collector to provide a first illumination pattern on the illumination target.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: July 24, 2018
    Assignee: Cognex Corporation
    Inventors: Feng Qian, Michael Moed, John Filhaber
  • Patent number: 10003776
    Abstract: A new projector design combines one spatial light modulator that affects only the phase of the illumination, and one spatial light modulator that only affects its amplitude (intensity). The phase-only modulator curves the wavefront of light and acts as a pre-modulator for a conventional amplitude modulator. This approach works with both white light and laser illumination, generating a coarse image representation efficiently, thus enabling, within a single image frame, significantly elevated highlights as well as darker black levels while reducing the overall light source power requirements.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: June 19, 2018
    Assignee: MTT Innovation Incorporated
    Inventors: Gerwin Damberg, James Gregson, Wolfgang Heidrich
  • Patent number: 9945731
    Abstract: A system includes a source of laser beams forming an array, a source of a reference laser beam, and an optical detector for measuring respective phase differences between the array laser beams and the reference laser beam. The system includes a mask, having apertures with a shape, size and position identical to a shape, size and position of the array laser beams, and positioned in the reference laser beam to form respective beams of the reference laser beam corresponding to the beams from the array laser beams. A phase modulator phase modulates respective beams of one of (a) the array laser beams and (b) the beams of the reference laser from the mask. A photodetector receives the respective array laser beams and the corresponding reference laser beams from the mask to generate a composite signal. Processing circuitry is responsive to the composite signal for generating respective signals representing the phase differences of the individual laser beams from the reference laser beam.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: April 17, 2018
    Assignee: HRL Laboratories, LLC
    Inventors: Oleg M. Efimov, Keyvan R. Sayyah
  • Patent number: 9804088
    Abstract: Spatial frequency spectra from periodic, aperiodic and quasi-random structures in materials are shown and used to detect differences among objects via internal coding from the spatial frequencies. The method is applied to different grades of human tissues for a new form of histology and pathology, and to detect art forgeries and coding boxes, money and papers and gems. The randomness of material structures on surface and at depths near surface can be detected from the spatial spectrum. In tissue spectral features from normal to different stages of cancer in tissue for ex vivo and in vivo applications can be recognized by different spectral fingerprints content of the spatial frequency. Similarly, the painting for the strokes of artist is different. A new type of instrument is described to analyze materials as a Spatial Frequency Spectrometer.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 31, 2017
    Inventors: Robert R. Alfano, Yang Pu
  • Patent number: 9800774
    Abstract: A first restoration processing section 110 and a second restoration processing section 120 perform restoration processing on images (luminance data Y), which are successively captured by an image capture section, using a first filter 102, which is a restoration filter generated corresponding to a point spread function of an optical system, and a second filter 104 of which a restoration strength is weaker than that of the first filter 102. Depending on a result of determination which is input from an in-focus determination section 150 and indicates whether or not the image at the current time point is in a target in-focus state, a selection section 122 selects and outputs either luminance data YA which is processed using the first filter 102 or luminance data YB which is processed using the second filter 104.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: October 24, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Yousuke Naruse, Kenkichi Hayashi, Masahiko Sugimoto, Kosuke Irie
  • Patent number: 9770521
    Abstract: An aqueous ultrasound contact fluid includes a pharmaceutical grade triglyceride and a pharmaceutically acceptable emulsifier and the use of the ultrasound contact fluid in an intraoperative or interventional ultrasound imaging procedure. A method for intraoperative ultrasound imaging includes filling an aqueous ultrasound contact fluid into a body cavity. The aqueous ultrasound contact fluid is a composition comprising a pharmaceutical grade triglyceride and a pharmaceutically acceptable emulsifier and optionally a pharmaceutically acceptable humectant, and the triglyceride content is in the range of 8-240 g/1000 ml composition contact fluid and the amount of emulsifier is 0.4-18 g/1000 ml composition contact fluid, and optionally a humectant in the amount of 1.2-30 g/1000 ml. The method further includes obtaining an ultrasound image of a body region that comprises at least part of the body cavity filled with the aqueous ultrasound contact fluid.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: September 26, 2017
    Assignee: Sinvent AS
    Inventors: Tormod Selbekk, Geirmund Unsgård
  • Patent number: 9762565
    Abstract: Unique methods and systems are introduced herein for the determination of unique spatial light modulator based optical signatures of intrinsic and extrinsic scattering surface markers. These techniques can be used to authenticate semiconductor components and systems at various stages during the manufacturing process by measuring and cross correlating the surface marker's unique optical signature. In addition, these techniques can be used with extrinsic surface markers which are added to existing hardware (e.g. containers, locks, doors, etc.). These markers can then be measured for their unique optical signatures, which can be stored and used at a later time for cross-correlation to authenticate the surface marker and verify the hardware's provenance.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: September 12, 2017
    Assignee: Washington State University
    Inventors: Hergen Eilers, Benjamin Richard Anderson, Ray Gunawidjaja, Patrick David Price
  • Patent number: 9638922
    Abstract: A line-forming optical system and method are disclosed that form a line image with high-efficiency. A method includes forming a laser beam having a first intensity profile with a Gaussian distribution in at least a first direction and passing at least 50% of the laser beam in the first direction to form a first transmitted light. The method also includes: focusing the first transmitted light at an intermediate image plane to define a second intensity profile having a central peak and first side peaks immediately adjacent the central peak; then truncating the second intensity profile within each of first side peaks to define a second transmitted light; and then forming the line image at an image plane from the second transmitted light.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: May 2, 2017
    Assignee: Ultratech, Inc.
    Inventor: Serguei Anikitchev
  • Patent number: 9546952
    Abstract: The present invention relates to systems and methods for quantitative three-dimensional mapping of refractive index in living or non-living cells, tissues, or organisms using a phase-shifting laser interferometric microscope with variable illumination angle. A preferred embodiment provides tomographic imaging of cells and multicellular organisms, and time-dependent changes in cell structure and the quantitative characterization of specimen-induced aberrations in high-resolution microscopy with multiple applications in tissue light scattering.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: January 17, 2017
    Assignee: Massachusetts Institute of Technology
    Inventors: Wonshik Choi, Ramachandra Dasari, Christopher Fang-Yen, Michael Feld
  • Patent number: 9537288
    Abstract: A semiconductor laser device assembly includes (A) a semiconductor laser element and (B) a diffraction grating that configures an external resonator, returns diffraction light other than zero-th order diffraction light to the semiconductor laser element, and outputs the zero-th order diffraction light to the outside. An extension direction of a diffraction surface of the diffraction grating and a main vibration direction of a field of a laser beam incident on the diffraction grating are substantially parallel to each other.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: January 3, 2017
    Assignee: SONY CORPORATION
    Inventors: Hideki Watanabe, Shunsuke Kono, Masaru Kuramoto
  • Patent number: 9532038
    Abstract: The invention pertains to rendering of image data for a multi-view display, such as image data for a lenticular auto-stereoscopic display. The method comprising the steps of providing view-dependent image data for an image, determining a view-dependent intensity function, or luminance function, for the image, applying a spatial filtering to a view-dependent coordinate of the intensity function, the spatial filtering being such as a low-pass filter, a high-pass filter or a combination of a low-pass and a high-pass filter, and sampling the view-dependent intensity function to a plurality of sub-images, each sub-image being associated with a view-direction of the image.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: December 27, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Robert-Paul Mario Berretty
  • Patent number: 9448427
    Abstract: A transparent display apparatus. The apparatus includes a transparent display and a prism. The prism includes a polarizing beam splitter for splitting a received light into a first polarized light component and a second polarized light component. The prism transmits the first light component and reflects the second light component into the prism. In addition, the prism includes an optical rotator for converting the second light component to a first light component. The converted first light component is transmitted through the prism and displayed through the transparent display. In one embodiment, one or more custom prisms are used. In another embodiment, one or more cube prisms are used.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: September 20, 2016
    Inventors: Ram Pattikonda, Shariq Hamid
  • Patent number: 9423306
    Abstract: A method of measuring characteristics of a wavefront of an incident beam includes obtaining an interferogram associated with the incident beam passing through a transmission mask and Fourier transforming the interferogram to provide a frequency domain interferogram. The method also includes selecting a subset of harmonics from the frequency domain interferogram, individually inverse Fourier transforming each of the subset of harmonics to provide a set of spatial domain harmonics, and extracting a phase profile from each of the set of spatial domain harmonics. The method further includes removing phase discontinuities in the phase profile, rotating the phase profile, and reconstructing a phase front of the wavefront of the incident beam.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: August 23, 2016
    Assignee: RAM PHOTONICS, LLC
    Inventor: Seung-Whan Bahk
  • Patent number: 9411163
    Abstract: A line-forming optical system and method are disclosed that form a line image with high-efficiency. A method includes forming a laser beam having a first intensity profile with a Gaussian distribution in at least a first direction and passing at least 50% of the laser beam in the first direction to form a first transmitted light. The method also includes: focusing the first transmitted light at an intermediate image plane to define a second intensity profile having a central peak and first side peaks immediately adjacent the central peak; then truncating the second intensity profile within each of first side peaks to define a second transmitted light; and then forming the line image at an image plane from the second transmitted light.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: August 9, 2016
    Assignee: Ultratech, Inc.
    Inventor: Serguei Anikitchev
  • Patent number: 9357108
    Abstract: Disclosed are a camera, an image sensor thereof, and a driving method thereof. An image sensor converts an incident light into an electrical image signal. The image sensor outputs the converted electrical image signal by removing noise from the electrical image signal. An image processing unit processes the output image signal to generate screen image data. The image sensor effectively removes noise, thereby improving the optical precision of the camera.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: May 31, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Eun Hye Gu
  • Patent number: 9298004
    Abstract: An optical scanning device includes a light source, a scanning member, a converging lens, a first aperture, a second aperture, and a support member. The first aperture is provided between the converging lens and the scanning member and includes a first opening portion configured to restrict a beam path width in a main scanning direction of the laser beams emitted from the light source. The second aperture is provided between the light source and the converging lens and includes a second opening portion and a cylindrical portion. The second opening portion is configured to restrict a beam path width in a sub scanning direction of the laser beams emitted from the light source, and is formed in the cylindrical portion. The support member includes a cylinder supporting portion that pivotably supports the cylindrical portion of the second aperture.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: March 29, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Shingo Yoshida, Hideji Mizutani, Takayuki Kurihara
  • Patent number: 9289853
    Abstract: A laser beam applying apparatus includes a laser beam oscillating unit, a focusing lens, and a diffractive optic element provided between the laser beam oscillating unit and the focusing lens for defining the spot shape of the laser beam oscillated by the laser beam oscillating unit. A zeroth-order light removing unit removes zeroth-order light emerging from the diffractive optic element and leaves first-order light whose spot shape has been defined by the diffractive optic element and the focusing lens. A first prism has an incident surface and an emergent surface inclined with respect to the incident surface. A second prism has a zeroth-order light reflecting surface for reflecting the zeroth-order light and a first-order light emerging surface from which the first-order light emerges. A damper absorbs the zeroth-order light reflected on the zeroth-order light reflecting surface of the second prism.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: March 22, 2016
    Assignee: Disco Corporation
    Inventor: Keiji Nomaru
  • Patent number: 9287961
    Abstract: A receive-only smart antenna with a directional-point command capability for communication with geostationary satellites, allowing autonomous detection of received signals in order to allow steerage of multiple beams. An array feed is used to illuminate a parabolic reflector, with each feed element of the smart antenna associated with a unique beam-pointing direction. As the receiver switches to different feed elements, the far-field beam is scanned, making it possible to track a geostationary satellite in slightly inclined orbits, eliminating the need for mechanical tracking mechanisms while maintaining high antenna gain in the direction of the satellite. The receive-only smart antenna also features capabilities for forming multiple simultaneous beams supporting operations of multiple geo-satellites closely space in slightly inclined orbits. The designs can support orthogonal beams for enhanced bandwidth capacity via multiple beams with excellent spatial isolation.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: March 15, 2016
    Assignee: SPATIAL DIGITAL SYSTEMS, INC.
    Inventor: Donald C. D. Chang
  • Patent number: 9225338
    Abstract: A photonic waveform generator and a method of generating an electrical waveform based on a photonic signal are disclosed. The generator includes an input port for receiving an optical signal, a pulse shaper coupled to the input port and configured to Fourier transform the optical signal and apply a pre-distort waveform onto optical spectrum of the optical signal, a dispersive pulse stretcher coupled to the pulse shaper, an optical-to-electrical converter coupled to the dispersive pulse stretcher, and an output port coupled to the optical-to-electrical converter, the pre-distortion removes distortion of the electrical signal that exists in the absence of the pre-distortion caused by violation of far field limitation between the optical signal and the electrical signal.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: December 29, 2015
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Andrew Marc Weiner, Amir Dezfooliyan
  • Patent number: 9221124
    Abstract: Systems and methods are provided for scribing wafers with short laser pulses so as to reduce the ablation threshold of target material. In a stack of material layers, a minimum laser ablation threshold based on laser pulse width is determined for each of the layers. The highest of the minimum laser ablation thresholds is selected and a beam of one or more laser pulses is generated having a fluence in a range between the selected laser ablation threshold and approximately ten times the selected laser ablation threshold. In one embodiment, a laser pulse width in a range of approximately 0.1 picosecond to approximately 1000 picoseconds is used. In addition, or in other embodiments, a high pulse repetition frequency is selected to increase the scribing speed. In one embodiment, the pulse repetition frequency is in a range between approximately 100 kHz and approximately 100 MHz.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: December 29, 2015
    Assignee: ELECTRO SCIENTIFIC INDUSTRIES, INC.
    Inventors: Jeffrey A. Albelo, Peter Pirogovsky
  • Patent number: 8994811
    Abstract: Disclosed is a diffraction microscopy capable of reducing influence of an increase in the incident angle range of a beam. Specifically disclosed is a diffraction microscopy in which a beam is incident on a sample, in which the intensity of a diffraction pattern from the sample is measured, and in which an image of an object is rebuilt using Fourier interactive phase retrieval on the basis of the measured intensity of the diffraction pattern. In this method, Fourier interactive phase retrieval is performed using deconvolution on the diffraction pattern subjected to convolution by the increase in the incident angle range of the beam.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: March 31, 2015
    Assignee: National University Corporation Hokkaido University
    Inventors: Kazutoshi Gohara, Kota Kawahara
  • Patent number: 8928985
    Abstract: An image blur correction device includes a lens unit having at least one lens and rotationally moving in a first direction which is a rotation direction of a first fulcrum axis and in a second direction which is a rotation direction of a second fulcrum axis relative to an outer casing, a first driving motor which causes the lens unit to pivot in the first direction, and a second driving motor which causes the lens unit to pivot in the second direction. An auxiliary axis is disposed opposite to the first driving motor with interposing of the lens unit, the lens unit pivots in the first direction and in the second direction by the rotation of output axes of the first and second driving motors, and each output axis is rotatably supported by a pair of first bearings and each auxiliary axis is rotatably supported by a second bearing.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: January 6, 2015
    Assignee: Sony Corporation
    Inventors: Tatsuyuki Nakayama, Takumi Fukuda, Keishi Kobayashi, Kazuhiro Hattori, Atsushi Horidan
  • Patent number: 8861067
    Abstract: A method for modulating light using a micro-electro-mechanical structure includes providing a plurality of deformable mirror elements (30) having an L-shaped cross section. Each of the deformable mirror elements is comprised of a pedestal (32) and an elongated ribbon (33). Each of the ribbons has a reflective surface (35). A beam of light is directed on the deformable mirror elements. The deformable mirror elements is flexed about an axis parallel to a long dimension of the ribbons to vary a curvature of at least one of the reflective ribbons.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: October 14, 2014
    Assignee: Eastman Kodak Company
    Inventor: Nissim Pilossof
  • Patent number: 8848278
    Abstract: A system for modulating light using a micro-electro-mechanical structure includes a plurality of deformable mirror elements (30) having an L-shaped cross section. Each of the deformable mirror elements is comprised of a pedestal (32) and an elongated ribbon (33). Each of the ribbons has a reflective surface (35). A beam of light is directed on the deformable mirror elements. The deformable mirror elements is flexed about an axis parallel to a long dimension of the ribbons to vary a curvature of at least one of the reflective ribbons.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: September 30, 2014
    Assignee: Eastman Kodak Company
    Inventor: Nissim Pilossof
  • Patent number: 8837031
    Abstract: The design method for complex electromagnetic materials is expanded from form-invariant coordinate transformations of Maxwell's equations to finite embedded coordinate transformations. Embedded transformations allow the transfer of electromagnetic field manipulations from the transformation-optical medium to another medium, thereby allowing the design of structures that are not exclusively invisible. A topological criterion for the reflectionless design of complex media is also disclosed and is illustrated in conjunction with the topological criterion to design a parallel beam shifter and a beam splitter with unconventional electromagnetic behavior.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: September 16, 2014
    Assignee: Duke University
    Inventors: Marco Rahm, David R. Smith, David A. Schurig
  • Patent number: 8792167
    Abstract: A monolithic or hybrid integrated optical information processor or optical information processing system having a plurality of non-quadratic phase optical elements, at least one LED array, and plurality of light modulating array elements, each controlled by respective control signals, the system arranged so that each light modulating array element lies in a different plane. In some implementations, at least a portion of the resulting system is implemented in a stack of component materials. In an implementation, an LED array is used as an image source and another LED array is used as an image sensor to transform the processed image into an electrical output.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: July 29, 2014
    Inventor: Lester F. Ludwig
  • Patent number: 8570655
    Abstract: A method of optical element manufacturing, the method may include selecting a range of a misfocus parameter ?; and designing the optical element to include multiple regions, wherein the optical transfer function (OTF) of the optical element allows, for the range of the misfocus parameter .psi., transmission of images with a contrast of at least 10% for all normalized spatial frequencies up to 50% of a theoretical maximum that is attainable with a full aperture in an in-focus condition.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: October 29, 2013
    Assignee: Ramot at Tel Aviv University Ltd.
    Inventors: Eyal Ben-Eliezer, Emanuel Marom, Naim Konforti, Zeev Zalevsky
  • Patent number: 8553329
    Abstract: A monolithic or hybrid integrated optical information processor employing a plurality of controllable optical transfer functions at fractional Fourier planes between two optical imaging elements is described. The arrangement can be used to realize or closely approximate arbitrary non-positive-definite transfer functions of spatially-varying amplitude and phase. In various implementations, one or both of the optical imaging elements can comprise a lens or graded-index material. In some implementations, at least a portion of the arrangement is implemented in the form of a stack. Graded index material may lie between consecutive light modulating array elements. The controllable plurality of optical transfer functions are employed to create a controllable optical processor which can be used for image filtering and optical computations using complex-valued optical signal arithmetic. An image sensor may be included to transform the processed image into electrical output.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: October 8, 2013
    Inventor: Lester F. Ludwig
  • Patent number: 8441726
    Abstract: Light from an optical fiber is incident on a frequency dispersion element. The frequency dispersion element disperses the incident light into light beams in different directions according to their frequencies and directs the dispersed light beams to a lens. The lens develops the incident light beams over an xy plane according to their frequencies in a strip-like form. A frequency selective element has pixels arranged in a frequency dispersion direction and brings pixels located at positions corresponding to the frequency to be selected into a reflective state. A light beam selected by the frequency selective element is emitted from an optical fiber through the same path. By changing reflection characteristics of the frequency selective element according to each pixel, optical filter characteristics can be desirably changed so as to achieve change of passband width and frequency shift.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: May 14, 2013
    Assignee: Santec Corporation
    Inventor: Yasuki Sakurai
  • Patent number: 8416480
    Abstract: A hologram reproducing apparatus includes a first reference light path leading laser light from a laser light source so that a hologram recording medium is irradiated with first reference light; a diffracted light path leading diffracted light, generated from the hologram recording medium by irradiation with the first reference light, to a light receiving element having a plurality of pixels; and a second reference light path leading second reference light, having the same polarization direction as that of the diffracted light, from the laser light source to the light receiving element. The second reference light path is provided with a phase modulating element so that the phase difference between the diffracted light and the second reference light in a light receiving surface of the light receiving element is adjusted within a predetermined range.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: April 9, 2013
    Assignee: Sony Corporation
    Inventors: Tomiji Tanaka, Masaaki Hara, Kazutatsu Tokuyama, Satoru Seko, Shinji Yamada, Hitoshi Okada
  • Patent number: 8400710
    Abstract: The observing apparatus is being equipped with an image-forming optical system which forms an image of light emitted from a specimen, an imaging unit which picks up the image of the specimen formed by the image-forming optical system, and an illuminating unit which illuminates the specimen with a surface illuminant in which bright areas and dark areas are arranged alternately in order to provide an observing apparatus suitable to observe a transparent specimen with a wide field of view. If the position of the surface illuminant and the pitch of contrasting are set properly, each partial area of the specimen is illuminated obliquely at a small angle by each bright area of the surface illuminant. Therefore, the imaging unit can acquire a dark-field observation image of each partial area.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: March 19, 2013
    Assignee: Nikon Corporation
    Inventors: Susumu Terakawa, Takashi Sakurai, Hisao Osawa, Yasujiro Kiyota
  • Patent number: 8398243
    Abstract: The present invention relates to a projection device for holographic reconstruction of scenes, said device comprising at least one light modulator device and at least one light source which emits sufficiently coherent light for the generation of a wave front of a scene, which is encoded in the light modulator device. A Fourier transform (FT) of the light which is emitted by the light source and modulated by the light modulator device is projected by a projection means on to a screen. Further, the wave front which is encoded on the light modulator device is projected by the projection means into at least one virtual observer window in an observer plane. For tracking the observer window according to a change in an eye position of the at least one observer, the inventive device comprises at least one deflection means, which is disposed between the light modulator device and the screen.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: March 19, 2013
    Assignee: Seereal Technologies S.A.
    Inventor: Philippe Renaud-Goud
  • Publication number: 20130033976
    Abstract: An acoustic hologram imaging system constructed from a machined housing having folded optics. Various surfaces of the housing are machined to provide a precise alignment to the optical members to be connected thereto, such as a mirror, a lens assembly, a light emitting laser diode, a camera, and the like. A three-part lens is described having different materials with different indexes of refraction in order to provide a desired focus of the light. In addition, an optical spatial filter is disclosed in which, according to various embodiments, all, some, or none of the light passing therethrough is attenuated for recording of the optical image of the hologram.
    Type: Application
    Filed: August 4, 2011
    Publication date: February 7, 2013
    Applicant: ADVANCED IMAGING TECHNOLOGIES, INC.
    Inventors: Todd F. Garlick, George F. Garlick
  • Patent number: 8368971
    Abstract: A light scanning apparatus includes a scanner 104 which scans a coherent light beam from a light source 101 , a light beam component generator 110 which divides the coherent light beam outgoing from the scanner 104 into a plurality of light beam components, and an optical system 105 which collects the plurality of light beam components so that they are incident on a scan surface 106 at an incident angle different from each other, and superposes the light beam components at an identical position on the scan surface.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: February 5, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Keiichiro Ishihara
  • Patent number: 8285401
    Abstract: According to various embodiments, a method is provided for determining aberration data for an optical system. The method comprises collecting a data signal, and generating a pre-transformation algorithm. The data is pre-transformed by multiplying the data with the pre-transformation algorithm. A discrete Fourier transform of the pre-transformed data is performed in an iterative loop. The method further comprises back-transforming the data to generate aberration data.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: October 9, 2012
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Bruce H. Dean
  • Patent number: 8274495
    Abstract: A touch screen that employs a lens-less linear IR sensor array and an IR light source from a single location at the periphery of the screen to illuminate one or more objects proximate to the screen surface and detect light reflected from such objects. The sensor array is paired with a proximal grid-like barrier/reflector to create Moiré patterns on the sensor array. Digital signal processing converts such patterns into discrete Fourier transforms. The peaks of the lower order discrete Fourier spectrum as well as the complex phases of the lower order peaks can be used to determine the locations of the objects proximal to the screen accurately. A small number of pressure or surface acoustic sensors at the periphery of the screen are utilized to improve positioning reliability by providing redundant positioning information and registering physical contacts with the screen.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: September 25, 2012
    Assignee: General Display, Ltd.
    Inventor: Yee Chun Lee
  • Patent number: 8244023
    Abstract: A shape measuring device includes: a slit pattern projection unit (1) for projecting a slit light onto a test object (20); an imaging lens (3) and a plane parallel plate (4) for forming a plurality of slit images, which is generated when the slit light is reflected by the object (20), separated in a direction perpendicular to a slit base line direction; an imaging unit (5) for picking up the plurality of slit images and generating a plurality of slit picture images; an XYZ stage drive unit (12) for relatively moving the slit light and the test object (20) in a direction different from the slit base line direction of the slit light; a slit picture image selection unit (8) for comparing the brightness of each pixel of slit picture image on the slit base line direction, and selecting a slit picture image having an optimum brightness to determine the shape of the test object (20) on the slit base line direction, and acquiring image data to determine the shape of the test object (20); and a shape computing unit (9
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: August 14, 2012
    Assignee: Nikon Corporation
    Inventor: Tomoaki Yamada
  • Publication number: 20120200924
    Abstract: A monolithic or hybrid integrated optical information processor employing a plurality of controllable optical transfer functions at fractional Fourier planes between two optical imaging elements is described. The arrangement can be used to realize or closely approximate arbitrary non-positive-definite transfer functions of spatially-varying amplitude and phase. In various implementations, one or both of the optical imaging elements can comprise a lens or graded-index material. In some implementations, at least a portion of the arrangement is implemented in the form of a stack. Graded index material may lie between consecutive light modulating array elements. The controllable plurality of optical transfer functions are employed to create a controllable optical processor which can be used for image filtering and optical computations using complex-valued optical signal arithmetic. An image sensor may be included to transform the processed image into electrical output.
    Type: Application
    Filed: April 18, 2012
    Publication date: August 9, 2012
    Inventor: Lester F. LUDWIG
  • Patent number: 8203788
    Abstract: The present invention relates to an electromagnetic beam converter and a method for conversion of an input beam of electromagnetic radiation having a bell shaped intensity profile a(x,y) into an output beam having a prescribed target intensity profile I(x?,y?) based on a further development of the generalized phase contrast method.
    Type: Grant
    Filed: September 17, 2008
    Date of Patent: June 19, 2012
    Assignee: Danmarks Tekinske Universitet
    Inventor: Jesper Glückstad