With Aberration Correction Patents (Class 359/16)
  • Patent number: 10802183
    Abstract: A diffraction grating may include a substrate. The diffraction grating may include an etch stop layer to prevent etching of the substrate. The etch stop layer may be deposited on the substrate. The diffraction grating may include a marker layer to indicate an etch end-point associated with etching of a dielectric layer. The marker layer may be deposited on a portion of the etch stop layer. The diffraction grating may include the dielectric layer to form a grating layer after being etched. The dielectric layer may be deposited on at least the marker layer.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: October 13, 2020
    Assignee: Lumentum Operations LLC
    Inventors: John Michael Miller, Gonzalo Wills, Lu Tian, Michael O'Leary
  • Patent number: 10641928
    Abstract: An optical design pattern/method was invented to control the total cost including the material and the manufacturing of IR imaging lenses. This optical design pattern/method comprises a molded lens and an aberration correction lens. This design pattern/method leads to cost-effective IR imaging lenses because the unit cost of the molded lens is low for a volume production and the unit cost of the aberration correction lens is low for its very small manufacturing. This optical design pattern/method comprises any imaging and spectral applications for any partial band of 1 to 14 micron, such as (but not limited to) SWIR, MWIR, and LWIR.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: May 5, 2020
    Assignee: LightPath Technologies, Inc.
    Inventors: Fujian Ding, Mark Lifshotz
  • Patent number: 10551533
    Abstract: Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise a lens assembly comprising two transmissive plates, a first of the two transmissive plates comprising a first surface sag based at least in part on a cubic function, and a DOE to direct image information to a user's eye; wherein the DOE is placed in between the two transmissive plates of the lens assembly, and wherein the DOE is encoded with the inverse of the cubic function corresponding to the surface sag of the first transmissive plate; such that a wavefront created by the encoded DOE is compensated by the wavefront created by the first transmissive plate, thereby collimating light rays associated with virtual content delivered to the DOE.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: February 4, 2020
    Assignee: Magic Leap, Inc.
    Inventors: Robert D. Tekolste, Eric Browy
  • Patent number: 10474005
    Abstract: An imaging unit includes: an attachment member that is attached to a mobile terminal which includes an imaging section and a lighting section; a lens section that is disposed at a position corresponding to the imaging section of the mobile terminal and closes up a target; and an optical member that guides illumination light from the lighting section, from the lighting section of the mobile terminal toward the target rather than an end of the lens section on a side of the target.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: November 12, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Keiji Endo, Tadashi Masuda
  • Patent number: 10274660
    Abstract: A holographic substrate-guided wave-based see-through display has a microdisplay, capable of emitting light in the form of an image. The microdisplay directs its output to a holographic optical element, capable of accepting the image from the microdisplay, and capable of transmitting the light. The holographic optical element couples its output to an elongate substrate, capable of accepting the light from the holographic optical element at a first location, and transmitting the light along a length of the substrate by internal reflection to a second location, the elongate substrate being capable of transmitting the accepted light from the second location. The substrate couples out what it receives to a transparent holographic optical element, capable of accepting the light transmitted from the substrate and transmitting it to a location outside of the holographic optical element as a viewable image.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: April 30, 2019
    Assignee: Luminit, LLC
    Inventors: Fedor Dimov, Tin Aye, Kevin Yu, Svetlana Soboleva, Khin Swe Yin, Myo Kyaw, Dmitry Voloschenko
  • Patent number: 10174900
    Abstract: A lighting apparatus for vehicles with a number of semiconductor-based light sources and a projection device for generating the specified light distribution with a cut-off line. The projection device features a correction device with at least two lenses. The surface of at least one of the lenses is designed as a diffractive lens surface for achromatization in a visible wavelength range. The two lenses are made from different lens materials. The surfaces of at least two lenses are designed as refractive lens surfaces that have their optical power calculated based on a temperature range and/or expansion coefficient of the lens material of at least two lenses such that adding the optical power of the lenses yields a predefined total optical power of the correction device.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: January 8, 2019
    Assignee: Hella GmbH & Co. KGaA
    Inventor: Michael Schöne
  • Patent number: 10042097
    Abstract: Configurations are disclosed for presenting virtual reality and augmented reality experiences to users. The system may comprise a lens assembly comprising two transmissive plates, a first of the two transmissive plates comprising a first surface sag based at least in part on a cubic function, and a DOE to direct image information to a user's eye; wherein the DOE is placed in between the two transmissive plates of the lens assembly, and wherein the DOE is encoded with the inverse of the cubic function corresponding to the surface sag of the first transmissive plate; such that a wavefront created by the encoded DOE is compensated by the wavefront created by the first transmissive plate, thereby collimating light rays associated with virtual content delivered to the DOE.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: August 7, 2018
    Assignee: MAGIC LEAP, INC.
    Inventor: Robert D. Tekolste
  • Patent number: 9288294
    Abstract: A handheld electronic device includes a body, a transparent cover, and a display panel. The body has a display opening. The transparent cover is disposed on the display opening. The transparent cover includes a first surface facing outside of the body and a second surface opposite to the first surface, and the second surface includes a curved surface. A curvature radius of the first surface is different from a curvature radius of the second surface. The display panel bends along the second surface and is attached to the second surface. Moreover, a method for assembling the display panel of the handheld electronic device is provided.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: March 15, 2016
    Assignee: HTC Corporation
    Inventors: Ming-Tien Lin, Chih-Jen Hu
  • Patent number: 9170562
    Abstract: An optical beam with the same amplitude distribution and phase distribution as those of the signal beam used for recording is radiated to the hologram recording medium via an optical system of the signal beam prior to reproduction so that the optical beam with the amplitude and phase of the reference beam upon recording is generated through diffraction. A wavefront sensor detects the wavefront configuration of the diffraction beam and obtains preliminarily the suitable wavefront of the reference beam for reproduction. The wavefront control element preliminarily corrects the wavefront of the reference beam to an optimum wavefront.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: October 27, 2015
    Assignee: HITACHI CONSUMER ELECTRONICS CO., LTD.
    Inventors: Kenichi Shimada, Toshiki Ishii
  • Patent number: 8971363
    Abstract: Method for shielding a high-power laser apparatus (S) in which a laser beam is generated and then amplified in at least a first amplification stage, including spatial filtering (4) of the amplified laser beam, phase correction (3) carried out on the laser beam before it is spatially filtered, and a measurement of the aberrations (7) on the laser beam. The phase of the beam is corrected so as to produce a beam having minimal aberrations after spatial filtering. The shielding device (D, D?) implementing this method may in particular be employed in apparatus using an intense laser beam of high (terawatt) peak power and in proton therapy units.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: March 3, 2015
    Assignees: Imagine Optic, Amplitude Technologies
    Inventors: Xavier Levecq, Gilles Riboulet
  • Publication number: 20140285862
    Abstract: An illumination unit is provided including a coherent light source; a projection optical element which focuses a light beam emitted from the coherent light source onto a focal plane; and a holographic optical element interposed between the coherent light source and the projection optical element, and having an interference pattern formed thereon. The holographic optical element diffracts the light beam emitted from the coherent light source and emits the diffracted light to the projection optical element. Here, the interference pattern on the holographic optical element may have information that diffracts the light beam and thereby cancels a diffraction of the light beam due to an aberration of the projection optical element.
    Type: Application
    Filed: February 14, 2014
    Publication date: September 25, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hoon SONG, Gee-young SUNG, Kang-hee WON, Hong-seok LEE
  • Patent number: 8836720
    Abstract: Units which respectively acquire information on an aberration generated by a display optical system and information on an aberration generated by a vision correction optical system used by an observer are arranged. Aberration correction is executed based on the two aberrations. An aberration generated by a combination of the display optical system and the vision correction optical system used by the observer can be appropriately corrected for each observer.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: September 16, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Oyama, Takuya Tsujimoto
  • Patent number: 8681184
    Abstract: A display unit for binocular representation of a multicolor image including a control unit triggering an imaging element such that the imaging element generates in a temporal successive manner the image to be displayed for a first beam path and a second beam path as a first image and second image, respectively. The images are generated in a pre-distorted manner, opposite of the chromatic aberration of the respective beam path, such that the chromatic aberration generated in the respective beam path is compensated when the first and second image is displayed. The display unit includes a switching module which operates in temporal synchrony with the first and second image being generated, such that a user can see the first image only via the first beam path and the second image only via the second beam path.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: March 25, 2014
    Assignee: Carl Zeiss AG
    Inventors: Markus Seesselberg, Johannes Ruoff
  • Patent number: 8657439
    Abstract: Continuous Adjustable Pulfrich Filter Spectacles are provided with lenses with continuously changeable optical densities, so that viewing of 2D movies is optimized for visualization in natural 3D. Method and means are disclosed for the continuous Adjustable Pulfrich Filter Spectacles to perform two independent optimizations to achieve optimized 3Deeps visual effects on 2D movies. First they compute the optical density setting of the lenses for optimal viewing of 2D movies as 3D. Then they continuously render the lenses of the spectacles to these optical densities optimized for characteristics of the electro-optical material from which the lenses of the spectacles are fabricated. The invention works for both 3DTV and 3D Cinema theater viewing.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: February 25, 2014
    Inventors: Kenneth Martin Jacobs, Ronald Steven Karpf
  • Patent number: 8396339
    Abstract: A virtual image display device with an optical waveguide to guide, by internal total reflection, parallel pencil groups meeting a condition of internal total reflection, a first reflection volume hologram grating to diffract and reflect the parallel pencil groups incident upon the optical waveguide from outside and traveling in different directions as they are so as to meet the condition of internal total reflection inside the optical waveguide and a second reflection volume hologram grating to project the parallel pencil groups guided by internal total reflection inside the optical waveguide as they are from the optical waveguide by diffraction and reflection thereof so as to depart from the condition of internal total reflection inside the optical waveguide.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: March 12, 2013
    Assignee: Sony Corporation
    Inventors: Hiroshi Mukawa, Katsuyuki Akutsu
  • Patent number: 8303112
    Abstract: Continuous Adjustable 3Deeps Filter Spectacles are provided with lenses with continuously changeable optical densities, so that viewing of 2D movies is optimized for visualization in natural 3D. Method and means are disclosed for the continuous Adjustable 3Deeps Filter Spectacles to perform two independent optimizations to achieve optimized 3Deep visual effects on 2D movies. First they compute the optical density setting of the lenses for optimal viewing of 2D movies as 3D. Then they continuously render the lenses of the spectacles to these optical densities optimized for characteristics of the electro-optical material from which the lenses of the spectacles are fabricated. The invention works for both 3DTV and 3D Cinema theater viewing.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: November 6, 2012
    Inventors: Kenneth Martin Jacobs, Ronald Steven Karpf
  • Patent number: 8294694
    Abstract: A three-dimensional image display device is provided which allows a reduction in redundant calculation and high-speed obtainment of an optimum control image to be recorded on an optical wavefront control unit This invention relates to a three-dimensional image display device for displaying a three-dimensional image by irradiating illuminating light at an optical wavefront control unit which records a control image. The three-dimensional image display device of this invention includes a control image optimizing unit which calculates three-dimensional images corresponding to a group of control images based on constraints inherent to the optical wavefront control unit, selects a control image corresponding to a three-dimensional image satisfying a predetermined condition from the group of control images and records the selected control image on the optical wavefront control device.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: October 23, 2012
    Assignee: NTT DoCoMo, Inc.
    Inventors: Masashi Tsuboi, Tsutomu Horikoshi, Atsushi Takeshita
  • 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: 8228599
    Abstract: A system for combining multiple coherent optical beams incorporates a plurality of coherent beamlets expanded to an aperture. An interferometer receives a sample of a full aperture unphased combination of the plurality of beamlets and provides interference fringes. A spatial light modulator (SLM) receives the fringes from the interferometer and generates a hologram as a diffraction grating. Relay optics transmit the full aperture unphased combined beamlets to the SLM and receive a diffraction corrected full aperture phased beam from the diffraction grating hologram for emission to the far field.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: July 24, 2012
    Assignee: The Boeing Company
    Inventors: Magarita A. Carbon, Dennis M. Guthals
  • Patent number: 8213755
    Abstract: A virtual image display device with an optical waveguide to guide, by internal total reflection, parallel pencil groups meeting a condition of internal total reflection, a first reflection volume hologram grating to diffract and reflect the parallel pencil groups incident upon the optical waveguide from outside and traveling in different directions as they are so as to meet the condition of internal total reflection inside the optical waveguide and a second reflection volume hologram grating to project the parallel pencil groups guided by internal total reflection inside the optical waveguide as they are from the optical waveguide by diffraction and reflection thereof so as to depart from the condition of internal total reflection inside the optical waveguide.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: July 3, 2012
    Assignee: Sony Corporation
    Inventors: Hiroshi Mukawa, Katsuyuki Akutsu
  • Patent number: 8208734
    Abstract: A method is provided for acquiring a reserved block in a holographic storage system. A symmetrical reference table is defined according to the characteristics of a known reference reserved block. Then, the differences between respective unit blocks and the reference reserved block are calculated according to the symmetrical reference table so as to determine total match scores for respective unit blocks. Consequently, the unit block having the highest match score is deemed as the reserved block.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: June 26, 2012
    Assignee: Lite-On It Corporation
    Inventor: Yin-Ying Chen
  • Patent number: 8179575
    Abstract: Systems and techniques for chromatic distortion reduction. Relative chromatic distortion information for an imaging system may be obtained, where the relative chromatic distortion information indicates relative displacement of a first color signal and a second color signal from a reference color signal in an image. The relative chromatic distortion information may be used to modify image data.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: May 15, 2012
    Assignee: Carl Zeiss MicroImaging GmbH
    Inventor: Jose De La Torre-Bueno
  • Publication number: 20120044554
    Abstract: The invention disclosed here teaches methods and apparatus for altering the temporal and spatial shape of an optical pulse. The methods correct for the spatial beam deformation caused by the intrinsic DC index gradient in a volume holographic chirped reflective grating (VHCRG). The first set of methods involves a mechanical mean of pre-deforming the VHCRG so that the combination of the deflection caused by the DC index gradient is compensated by the mechanical deformation of the VHCRG. The second set of methods involves compensating the angular deflection caused by the DC index gradient by retracing the diffracted beam back onto itself and by re-diffracting from the same VHCRG. Apparatus for temporally stretching, amplifying and temporally compressing light pulses are disclosed that rely on the methods above.
    Type: Application
    Filed: October 26, 2011
    Publication date: February 23, 2012
    Inventors: Christophe MOSER, Frank HAVERMEYER
  • Patent number: 8107705
    Abstract: A biometric optical recognition system includes optics, including a wavefront coding mask, for imaging a wavefront of object to be recognized to an intermediate image, and a detector for detecting the intermediate image. A modulation transfer function detected by the detector contains no zeros such that subsequent task based image processing recognizes the object. A biometric recognition system includes optics for imaging a wavefront of an object to be recognized to a first intermediate image, and a detector for detecting the first intermediate image. The optics include a phase changing element configured for modifying the wavefront such that a modulation transfer function characterizing detection of the first intermediate image contains no zeros such that subsequent task based image processing recognizes the object.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: January 31, 2012
    Assignee: OmniVision Technologies, Inc.
    Inventors: Edward Raymond Dowski, Jr., Kenneth Scott Kubala, Alan Eugene Baron
  • Patent number: 8073296
    Abstract: A virtual image display device which displays a two-dimensional image for viewing a virtual image in a magnified form by a virtual optical system. The virtual image display device includes an optical waveguide to guide, by internal total reflection, parallel pencil groups meeting a condition of internal total reflection, a first reflection volume hologram grating to diffract and reflect the parallel pencil groups incident upon the optical waveguide from outside and traveling in different directions as they are so as to meet the condition of internal total reflection inside the optical waveguide and a second reflection volume hologram grating to project the parallel pencil groups guided by internal total reflection inside the optical waveguide as they are from the optical waveguide by diffraction and reflection thereof so as to depart from the condition of internal total reflection inside the optical waveguide.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: December 6, 2011
    Assignee: Sony Corporation
    Inventors: Hiroshi Mukawa, Katsuyuki Akutsu
  • Patent number: 8050308
    Abstract: A means for optically coupling a semiconductor laser to an optical fiber is disclosed. In one embodiment, a volume phase holographic element is disposed on a light-emitting surface of a semiconductor laser. The volume phase holographic element acts as an aberration-corrector for a lens that is disposed between the semiconductor laser and the optical fiber. In this way, an inexpensive lens that is not aberration free can be used. In some embodiments, the volume phase holographic element converts a Gaussian light beam emitted by the semiconductor laser into an annular beam that is more suitable for long distance transmission in multimode fibers.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: November 1, 2011
    Assignee: Finisar Corporation
    Inventors: Jan Lipson, Zheng Wang, Mina Farr
  • Patent number: 8025425
    Abstract: An improved beaconless adaptive optics system and process. A target is illuminated with a high energy laser beam of a directed energy laser. Wave front measurements are made of high energy laser beam reflections from the target. These wave front measurements are analyzed by a high speed processor to determine both high frequency phase components and low frequency phase components in the wave front data. (Applicants' experiments have shown that there is a direct correlation between beam spot size on the target and the phase variance of the reflected laser beam. The correlation is: the greater the phase variance the smaller the beam spot size.) Applicants have developed a technique for providing special control algorithms that provide very high speed control of the elements of a deformable mirror using this phase variance as a feedback parameter. Applicants have also developed algorithms to correct a limited number of Zernike modes associated with the wave front control.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: September 27, 2011
    Assignee: Trex Enterprises Corp
    Inventor: Mikhail Belenkii
  • Patent number: 8023783
    Abstract: A virtual image display device is provided which displays a two-dimensional image for viewing a virtual image in a magnified form by a virtual optical system. The virtual image display device includes an optical waveguide (13) to guide, by internal total reflection, parallel pencil groups meeting a condition of internal total reflection, a first reflection volume hologram grating (14) to diffract and reflect the parallel pencil groups incident upon the optical waveguide from outside and traveling in different directions as they are so as to meet the condition of internal total reflection inside the optical waveguide and a second reflection volume hologram grating (15) to project the parallel pencil groups guided by internal total reflection inside the optical waveguide as they are from the optical waveguide by diffraction and reflection thereof so as to depart from the condition of internal total reflection inside the optical waveguide.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: September 20, 2011
    Assignee: Sony Corporation
    Inventors: Hiroshi Mukawa, Katsuyuki Akutsu
  • Patent number: 7997723
    Abstract: A near-eye display related apparatus and device is disclosed. The apparatus includes a housing configured to receive an optical engine, and a light guiding plate attached to the housing and configured to receive light representing an image from the optical engine, the light guiding plate includes a first diffractive grating adapted to incouple the light into the light guiding plate, and a second diffractive grating adapted to outcouple the light from the light guiding plate such that the light is received by an eye of a user wearing the apparatus. The light guiding plate has a contact surface portion configured to optically couple the light guiding plate to a transparent plate, The contact surface portion being adapted to be in physical contact with the transparent plate.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: August 16, 2011
    Assignee: Nokia Corporation
    Inventors: Seppo Pienimaa, Xia Wang, Kong Qiao Wang, Antti Salo, Tapani Levola
  • Patent number: 7995108
    Abstract: An image processing apparatus includes an image obtaining unit, a color shift detecting unit, a controlling unit, and a correction amount calculating unit. The image obtaining unit obtains image data. The color shift detecting unit detects color shifts of this image data. The controlling unit determines fitting reliability of the color shift detection result and selects a magnification chromatic aberration model suitable for color shift fitting according to the reliability. The correction amount calculating unit fits the magnification chromatic aberration model selected by the controlling unit to the color shift detection result and obtains correction amounts of the magnification chromatic aberration for the image data.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: August 9, 2011
    Assignee: Nikon Corporation
    Inventor: Akihiko Utsugi
  • Patent number: 7965325
    Abstract: An internal parameter storage unit stores, in advance, a plurality of sets of internal parameters each of which can be applied to correct a pixel position in a direction from an image principal point, i.e., a plurality of sets of internal parameters for accommodating errors of different magnitudes that occur in individual directions from an image principal point. An internal parameter selection unit selects a set of internal parameters from the plurality of sets of internal parameters stored in advance on the basis of the direction of a pixel position to be corrected from the image principal point, and a distortion-corrected image generator corrects distortion on the basis of the selected set of internal parameters, so that, even when a surface of a lens is not exactly parallel to a surface of an image pickup device, distortion is corrected more accurately.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: June 21, 2011
    Assignee: Alpine Electronics, Inc.
    Inventor: Kosuke Imamura
  • Patent number: 7889903
    Abstract: A biometric optical recognition system includes optics, including a wavefront coding mask, for imaging a wavefront of object to be recognized to an intermediate image, and a detector for detecting the intermediate image. A modulation transfer function detected by the detector contains no zeros such that subsequent task based image processing recognizes the object. A biometric recognition system includes optics for imaging a wavefront of an object to be recognized to a first intermediate image, and a detector for detecting the first intermediate image. The optics include a phase changing element configured for modifying the wavefront such that a modulation transfer function characterizing detection of the first intermediate image contains no zeros such that subsequent task based image processing recognizes the object.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: February 15, 2011
    Assignee: OmniVision Technologies, Inc.
    Inventors: Edward Raymond Dowski, Jr., Kenneth Scott Kubala, Alan Eugene Baron
  • Patent number: 7847238
    Abstract: A method and system for micromanipulation of objects of any shape. The method and system creates various forms of holographic optical traps for a variety of commercial purposes. Some alternate forms of traps include a dark form of optical traps, optical vortices with different helical winding numbers and optical traps with variable phase profiles imprinted thereon.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: December 7, 2010
    Assignee: New York University
    Inventor: David G. Grier
  • Patent number: 7751298
    Abstract: A liquid crystal element for correcting wave aberration included in an optical disc apparatus, is controlled by a liquid crystal element control unit which has a memory portion that stores information about a variation with time of orientation direction of liquid crystal in the case where a voltage is applied to the liquid crystal, with respect to at least one type of voltage value. The liquid crystal element control unit has a drive voltage deciding portion that obtains time period after a predetermined drive voltage is applied to the liquid crystal element until a reproduced signal obtained by processing an electric signal converted by the light detecting unit becomes optimal, and decides a drive voltage to be applied to the liquid crystal element based on the obtained time period, the information stored in the memory portion, and the predetermined drive voltage.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: July 6, 2010
    Assignee: Funai Electric Co., Ltd.
    Inventors: Tsuyoshi Eiza, Shinya Shimizu
  • Patent number: 7747113
    Abstract: A virtual image display device is provided which displays a two-dimensional image for viewing a virtual image in a magnified form by a virtual optical system. The virtual image display device includes an optical waveguide (13) to guide, by internal total reflection, parallel pencil groups meeting a condition of internal total reflection, a first reflection volume hologram grating (14) to diffract and reflect the parallel pencil groups incident upon the optical waveguide from outside and traveling in different directions as they are so as to meet the condition of internal total reflection inside the optical waveguide and a second reflection volume hologram grating (15) to project the parallel pencil groups guided by internal total reflection inside the optical waveguide as they are from the optical waveguide by diffraction and reflection thereof so as to depart from the condition of internal total reflection inside the optical waveguide.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: June 29, 2010
    Assignee: Sony Corporation
    Inventors: Hiroshi Mukawa, Katsuyuki Akutsu
  • Patent number: 7626152
    Abstract: A beam control system and method. The system includes an illuminator for providing a first beam of electromagnetic energy at a first wavelength; a source for providing a second beam of electromagnetic energy at a second wavelength; and an arrangement for compensating wavefront errors in the second beam using a bias representative of a comparison between the first wavelength and the second wavelength. In the illustrative embodiment, the arrangement includes a processor which corrects wavefront errors using a bias representative of a difference between said first wavelength and said second wavelength. In the disclosed application, a target wavefront sensor is included and the laser is a high-energy laser beam. The wavefront errors include a chromatic aberration and the errors are compensated using a deformable mirror and a correction algorithm executed by an adaptive optics processor. In one alternative embodiment, the errors are compensated using an optical aberration corrector.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: December 1, 2009
    Assignee: Raytheon Company
    Inventors: William B. King, Chungte W. Chen, Robert W. Byren, Chaunchy F. McKearn
  • Publication number: 20090180166
    Abstract: An apparatus for manipulating a perceived distance of a display. The apparatus comprises a display having an actual distance from a point of view (POV) and a diffractive optics element for diffracting light waves emitted from the display toward the POV, thereby manipulating a perceived distance of the display for an observer at the POV. The perceived distance is different from the actual distance.
    Type: Application
    Filed: January 16, 2008
    Publication date: July 16, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yaniv Hefetz, Noam Sorek, Sharon Sade
  • Patent number: 7550701
    Abstract: Systems and methods reduce aberrations in a wavefront imaged by an optical system having a non-linear detector. A wavefront of electromagnetic radiation from an object imaged to the non-linear detector is encoded. Data from the non-linear detector is digitally converted to form a digital representation of the image captured by the non-linear detector. The detected image is linearized to form a linearized image. The linearized image is filtered to reverse effects of wavefront coding to form a final image.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: June 23, 2009
    Assignee: OmniVision CDM Optics, Inc.
    Inventors: W. Thomas Cathey, Jr., Adam Douglas Greengard
  • Patent number: 7495200
    Abstract: A holographic adaptive optic system for correcting the wavefront of a light. A phase correction device with a plurality of pixels in the path of the light. A holographic wavefront sensor in the path providing a pair of reconstruction beams for each phase correction device pixel. The relative intensity of the two beams being proportional to the amount of aberration present in the initial beam. A detector that measures the relative intensity of the pair of reconstructed beams. The detector connected by at least one individual control connector to the relevant pixel in the phase correction device. The individual control connectors controlling the phase correction device based upon the relative intensity between the two reconstruction beams to reduce the wavefront aberration.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: February 24, 2009
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Geoff P. Andersen
  • Patent number: 7479966
    Abstract: The disclosure relates to Method and Apparatus for Super Montage Large area Spectroscopic Imaging. In one embodiment of the disclosure, a method for producing a spectroscopic image of an object includes the steps of (a) irradiating the object with light to thereby produce from the object scattered and/or emitted light for each of a plurality of wavelengths; (b) producing separately for each of the plurality of wavelengths a plurality of substantially contiguous sub-images of the object; (c) compensating for spatial aberrations in ones of the sub-images for a select one of the plurality of wavelengths; (d) compensating for intensity aberrations between ones of the substantially contiguous sub-images for one of the plurality of wavelengths; and (e) combining the sub-images for the select one wavelength to thereby produce said spectroscopic image of the object.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: January 20, 2009
    Assignee: ChemImage Corporation
    Inventors: John S. Maier, Jason H. Neiss
  • Patent number: 7471430
    Abstract: The invention provides a holographic image corrector in a microscope, which employs an optical system that has as an objective a lens or mirror. The characteristics of the objective are recorded by sending a first laser beam through a spatial filter (or an array of pinholes) and then through the objective, if a lens or reflecting the beam therefrom, if a mirror, to form an objective beam. Means are provided for directing a laser reference beam also through a spatial filter (or an array of pinholes) and intersecting same with the object beam in a recording medium, to form a hologram thereof. Then means illuminate the article to be viewed with a laser beam so that light therefrom passes through the objective or reflects therefrom and through the hologram, to correct for aberrations in the objective and provide a relatively clear image of the article.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: December 30, 2008
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Geoff P. Andersen
  • Patent number: 7450745
    Abstract: An imaging system for reducing aberrations from an intervening medium, and an associated method of use are provided. The system may be an optical or task-based optical imaging system including optics, such as a phase mask, for imaging a wavefront of the system to an intermediate image and modifying phase of the wavefront such that an optical transfer function of the system is substantially invariant to focus-related aberrations from the medium. A detector detects the intermediate image, which is further processed by a decoder, removing phase effects from the optics and forming a final image substantially clear of the aberrations. Other systems may employ an encoder that codes wavefronts of acoustical waves propagating through a medium to make the wavefronts substantially invariant to acoustical aberrations from the medium. Imaging and decoding of the wavefronts reverse effects of the wavefront coding and produce sounds substantially free of the aberrations.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: November 11, 2008
    Assignee: OmniVision CDM Optics, Inc.
    Inventors: Edward Raymond Dowski, Jr., Kenneth Scott Kubala, Alan Eugene Baron
  • Patent number: 7418170
    Abstract: A virtual image display device is provided which displays a two-dimensional image for viewing a virtual image in a magnified form by a virtual optical system. The virtual image display device includes an optical waveguide (13) to guide, by internal total reflection, parallel pencil groups meeting a condition of internal total reflection, a first reflection volume hologram grating (14) to diffract and reflect the parallel pencil groups incident upon the optical waveguide from outside and traveling in different directions as they are so as to meet the condition of internal total reflection inside the optical waveguide and a second reflection volume hologram grating (15) to project the parallel pencil groups guided by internal total reflection inside the optical waveguide as they are from the optical waveguide by diffraction and reflection thereof so as to depart from the condition of internal total reflection inside the optical waveguide.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: August 26, 2008
    Assignee: Sony Corporation
    Inventors: Hiroshi Mukawa, Katsuyuki Akutsu
  • Publication number: 20080186547
    Abstract: As a result of the light from a plurality of point light sources located at an identical position being refracted at a surface of a color correction prism at the time of exposure, the chromatic aberration occurring as a result of the light (for example, image light) directed via a refractive surface of the optical system used at the time of reconstruction to the viewer's pupil being refracted at this refractive surface is corrected for. Moreover, at least two of another set of a plurality of point light sources are arranged at such positions as to provide angles of incidence commensurate with the deviation between them of the ratio between exposure wavelength and use wavelength.
    Type: Application
    Filed: February 1, 2008
    Publication date: August 7, 2008
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Yoshie SHIMIZU, Takeshi Endo
  • Patent number: 7407103
    Abstract: A bioptical holographic laser scanning system employing a plurality of laser scanning stations about a holographic scanning disc having scanning facets with high and low elevation angle characteristics, as well as positive, negative and zero skew angle characteristics which strategically cooperate with groups of beam folding mirrors having optimized surface geometry characteristics. The system has an ultra-compact construction, ideally suited for space-constrained retail scanning environments, and generate a 3-D omnidirectional laser scanning pattern between the bottom and side scanning windows during system operation. The laser scanning pattern of the present invention comprises a complex of pairs of quasi-orthogonal laser scanning planes, which include a plurality of substantially-vertical laser scanning planes for reading bar code symbols having bar code elements (i.e.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: August 5, 2008
    Assignee: Metrologic Instruments, Inc.
    Inventors: Frank Check, LeRoy Dickson, John Groot, Timothy Good
  • Patent number: 7408687
    Abstract: A laser beam delivery system for transforming a laser energy profile into a desired laser beam output energy profile. The laser beam delivery system comprises a laser for generating a laser beam along a beam path, at least one extra-cavity harmonic generation element being located along the beam path for generating harmonic multiples of a beam input frequency, and an extra-cavity beam expansion element, located before the at least one harmonic generation element, for expanding and collimating the laser beam prior to the laser beam being multiplied by the at least one harmonic generation element. The beam expansion element may be a refractive lens.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: August 5, 2008
    Assignee: Hitachi Via Mechanics (USA), Inc.
    Inventor: Todd E. Lizotte
  • Publication number: 20080137161
    Abstract: A method and system for preparing and using three dimensional optical ring traps. The method and system includes applying a single phase hologram to be able to independently control shape and force profile of an optical trap but without employing orbital angular momentum for the control parameter of an optical ring trap to manipulate an object.
    Type: Application
    Filed: October 24, 2007
    Publication date: June 12, 2008
    Inventors: Yohai Roichman, David G. Grier
  • Publication number: 20080121790
    Abstract: A method and system for micromanipulation of objects of any shape. The method and system creates various forms of holographic optical traps for a variety of commercial purposes. Some alternate forms of traps include a dark form of optical traps, optical vortices with different helical winding numbers and optical traps with variable phase profiles imprinted thereon.
    Type: Application
    Filed: November 6, 2007
    Publication date: May 29, 2008
    Inventor: David G. GRIER
  • Patent number: 7319783
    Abstract: A method for reducing optical distortion within an optical system employing adaptive optics, includes modifying phase of a wavefront of the optical system with a wavefront coding element. Image data of the optical system is post-processed to remove phase effects induced by the wavefront coding element, to reduce optical distortion caused by the adaptive optics and associated with one or more of quilting, stuck actuator and piston error.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: January 15, 2008
    Assignee: CDM Optics, Inc.
    Inventors: Edward Raymond Dowski, Jr., Kenneth Scott Kubala, Alan Eugene Baron
  • Patent number: 7317482
    Abstract: A distance calculation method and an imaging device that can be applied to a digital camera. The method includes calculating a distance between a point corresponding to an optical axis of a lens sub-system of the imaging device and an input point, and using the calculated distance to correct defects such as shading that occur in formed images due to peripheral light fall-off in the lens sub-system. The distance is approximated by a polygon having five or more sides, preferably having 8 or 16 sides. The distance is calculated by a disclosed function having constant coefficients, so that distances can be calculated by simple hardware.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: January 8, 2008
    Assignee: Sony Corporation
    Inventors: Nobuyuki Sato, Ken Nakajima