With Partial Reflection At A Surface Of A Prism Patents (Class 359/638)
  • Patent number: 10437008
    Abstract: In a color separation prism that includes a first and second prism blocks bonded to each other, the first and second prism blocks are bonded to the first and second adhesive portions of the first and second base plates, respectively. The first and second base plates are fixed to the first and second base plate-fixing portions of a base with the first and second base-fixing portion interposed therebetween, respectively. The second adhesive portion is disposed between the first and second base plate-fixing portions so that a direction in which the second base plate-fixing portion is displaced from the first base plate-fixing portion and a direction in which the second adhesive portion is displaced from the second base-fixing portion are opposite to each other in a case in which the base and the second base plate expand or contract due to a change in temperature.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: October 8, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Arihiro Saita, Kazumi Koike
  • Patent number: 10409078
    Abstract: A lensed beam-splitter prism array includes a beam-splitter substrate with a plurality of planar and parallel thin-film coatings each spanning a top substrate surface and a bottom substrate surface, and making an oblique angle therebetween, and a lens form layer formed on the top surface and having a plurality of lens forms, each lens form being above one of the plurality of coatings. A method for fabricating a lensed beam-splitter prism includes bonding a plurality of substrates to form a substrate stack having a coating between each adjacent substrate pair. The method also includes forming a stack slice by applying a plurality of parallel cuts at an oblique angle with respect to each coating. Each coating spans a first stack-slice surface and a second stack-slice surface opposing the first stack-slice surface. The method also includes forming a lens form layer on the first stack-slice surface spanning one or more coatings.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: September 10, 2019
    Assignee: OmniVision Technologies, Inc.
    Inventors: Jau-Jan Deng, Regis Fan, Yi-Wei Liu
  • Patent number: 10090635
    Abstract: The invention relates to a light module including a semiconductor laser element emitting a laser beam in a first cone of light, a photoluminescent element, and an optical means for transforming the light coming from the photoluminescent element into an exit light beam. The optical means has a guiding portion arranged to guide at least a portion of the light emitted in the first cone of light into a second cone of light and a device for detection of incident light. The light module comprises a means of deviation designed to deviate the light of the second cone of light toward a third cone of light directed toward the detection device arranged outside of the second cone of light.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: October 2, 2018
    Assignee: VALEO VISION
    Inventor: Pierre Renaud
  • Patent number: 9746589
    Abstract: A prism assembly includes a first prism, a second prism, a roof prism and an optical multilayer film. The first prism includes a first, a second and a third surface. The second prism includes a fourth, a fifth and a sixth surface. The fifth surface faces the third surface. The roof prism includes a seventh, an eighth and a ridge surface. The seventh surface faces the second surface. The optical multilayer film is disposed between the fifth surface and the third surface. A first light beam and a second light beam entering the first prism are totally reflected from the second surface to the optical multilayer film which reflects the first light beam but allows the second light beam to pass through. The second light beam enters the second prism, is totally reflected on the sixth surface, and exits from the fourth surface of the second prism.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: August 29, 2017
    Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.
    Inventors: Hua-Tang Liu, Ching-Shiang Wang
  • Patent number: 9575412
    Abstract: A method and system for adjusting exposure intensity to reduce unwanted lithographic effects is disclosed. In some exemplary embodiments, the method of photolithography includes receiving a mask and a workpiece. An orientation of an illumination pattern relative to the mask is determined, and an intensity profile of the illumination pattern is adjusted according to the orientation. The mask is exposed to radiation according to the illumination pattern and the intensity profile. Radiation resulting from the exposing of the mask is utilized to expose the workpiece. In some such embodiments, the intensity profile includes an intensity that varies across an illuminated region of the illumination pattern.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: February 21, 2017
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yen-Cheng Lu, Shinn-Sheng Yu, Jeng-Horng Chen, Anthony Yen
  • Patent number: 9042023
    Abstract: An exemplary video wall includes two display panels and a mullion elimination structure. The display panels each include a main body and a bezel. The mullion elimination structure includes a triangular prism and two transparent quadrangular prisms. The triangular prism includes a first bottom and two opposite first sides. The first bottom is attached to and covers two adjacent bezels of the display panels. The transparent quadrangular prisms each include a second bottom attached to the main body of one display panel, a second side, and an opposite third side . The third side is attached to the corresponding first side of the triangular prism. The second side is coated with a transflective film for partially transmitting and partially reflecting light incident thereon. A reflective surface is formed between the first sides of the triangular prism and the second sides of the quadrangular prisms for reflecting light incident thereon.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 26, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO. LTD.
    Inventor: Han-Lung Lee
  • Patent number: 8922899
    Abstract: A light combining system is provided comprising: prisms comprising respective entrance faces enabled to receive respective on-state light from respective digital-micro-mirror devices (DMD). At least one interface between prisms is enabled to receive respective on-state light from the prisms. A mirror at the at least one interface is enabled to transmit first on-state light from a first prism through a second prism and reflect second on-state light from the second prism in alignment with the first on-state light back through the second prism. Respective angles formed by a normal of the mirror and each of the first on-state light and the second on-state light is less than a total internal reflection angle. A combination of respective back working distances of the DMDs and shapes of each of the prisms is chosen such that respective illumination paths and respective reflection paths of each of DMDs do not interfere with each other.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: December 30, 2014
    Assignee: Christie Digital Systems USA, Inc.
    Inventor: John Domm
  • Patent number: 8919967
    Abstract: A micro projection system includes a primary prism as a light guide device. The primary prism has a bottom face and two slope faces. A light source module and a collimation lens are arranged at the bottom face of the primary prism to project red, green, and blue lights onto one of the slope faces of the primary prism to be consolidated by a wedge prism group and reflected toward a polarization beam splitting wedge prism arranged at another slope face, where the light is split into two polarized lights that are then emitted out of the primary prism to be processed and combined as light of consistent polarization by a lens array and a polarization conversion film so as to facilitate condensation and projection of the light by a polarization beam splitter and a projection lens.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: December 30, 2014
    Assignees: Cynosure Photonics Corp.
    Inventors: Ho Lu, Shih Po Yeh
  • Publication number: 20140333721
    Abstract: A stereo comparator configured for use with a stereo endoscope for adjusting and aligning an optical assembly of the stereo endoscope, for example, in connection with the repair of the endoscope. The comparator includes a housing containing a plurality of optical components, namely, a first deflecting component, a second deflecting component, a third deflecting component and a beam splitter. The optical components are arranged so that the first deflecting component deflects a first beam from a right image channel of a stereo endoscope to the beam splitter, the second deflecting component deflects a second beam from a left image channel of the stereo endoscope to the third deflecting component, the third deflecting component deflects the second beam to the beam splitter and the beam splitter combines the first beam with the second beam to form a first combined beam that extends along an optical axis of the stereo endoscope.
    Type: Application
    Filed: May 7, 2014
    Publication date: November 13, 2014
    Applicant: Integrated Medical Systems International, Inc.
    Inventors: Jurgen Zobel, Leighton A. Schonlau, Jose A. Ramirez
  • Patent number: 8873150
    Abstract: There is provided an optical device, including a light waves-transmitting substrate having two major surfaces and edges, optical means for coupling light into the means for coupling light into the substrate by total internal reflection, and plurality of partially reflecting surfaces (22a, 22b) carried by the substrate wherein the partially reflecting surfaces (22a, 22b) are parallel to each other and are not parallel to any of the edges of the substrate, and wherein one or more of the partially reflecting surfaces (22a, 22b) is an anisotropic surface.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: October 28, 2014
    Assignee: Lumus Ltd.
    Inventor: Yaakov Amitai
  • Patent number: 8867131
    Abstract: A polarizing beam splitter (“PBS”) includes a glass wedge having a first oblique surface, a multi-layer polarizing coating disposed on the first oblique surface of the glass wedge, and a plastic wedge having a second oblique surface. The first oblique surface of the glass wedge is mated to the second oblique surface of the plastic wedge with the multi-layer polarizing coating sandwiched between the first and second oblique surfaces.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: October 21, 2014
    Assignee: Google Inc.
    Inventor: Babak Amirparviz
  • Publication number: 20140218805
    Abstract: Disclosed is fixation by means of any type of adhesive of two- or more parts in an assembly consisting of one or more inhomogeneous part internally joined rigid together, e.g. lenses buildup as doublets or higher—or as the detailed example; Polarizing beam splitters.
    Type: Application
    Filed: July 12, 2012
    Publication date: August 7, 2014
    Applicant: 3 Shape A/S
    Inventors: Bo Petersen, Finn Hansen
  • Publication number: 20140168786
    Abstract: An exemplary video wall includes two display panels and a mullion elimination structure. The display panels each include a main body and a bezel. The mullion elimination structure includes a triangular prism and two transparent quadrangular prisms. The triangular prism includes a first bottom and two opposite first sides. The first bottom is attached to and covers two adjacent bezels of the display panels. The transparent quadrangular prisms each include a second bottom attached to the main body of one display panel, a second side, and an opposite third side . The third side is attached to the corresponding first side of the triangular prism. The second side is coated with a transflective film for partially transmitting and partially reflecting light incident thereon. A reflective surface is formed between the first sides of the triangular prism and the second sides of the quadrangular prisms for reflecting light incident thereon.
    Type: Application
    Filed: August 30, 2013
    Publication date: June 19, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: HAN-LUNG LEE
  • Publication number: 20140111866
    Abstract: An optical assembly is provided for use with a laser alignment system that has a laser emitter and at least one photosensitive target. The optical assembly includes first and second 90° pentaprisms disposed for receiving an input beam produced by the laser emitter. The first and second 90° pentaprisms are oriented to produce first and second reflected beams that are parallel to one another. The optical assembly further includes first and second beam diverters disposed and oriented to receive the reflected beams from the first and second 90° pentaprisms and to produce first and second output beams that are mutually perpendicular. The first and second 90° pentaprisms may be see-through pentaprisms to produce a third output beam that is colinear with the input beam and perpendicular to the first and second output beams.
    Type: Application
    Filed: March 11, 2013
    Publication date: April 24, 2014
    Applicant: HAMAR LASER INSTRUMENTS, INC.
    Inventor: Martin R. Hamar
  • Publication number: 20140111813
    Abstract: An optical assembly is provided for use with a laser alignment system that has a laser emitter and at least one photosensitive target. The optical assembly includes a right angle prism disposed for receiving an input beam produced by the laser emitter and first and second 90° pentaprisms disposed receiving the output from the right angle prism. The first and second 90° pentaprisms are oriented to produce first and second reflected beams that are parallel to one another. The optical assembly further includes first and second beam diverters disposed and oriented to receive the reflected beams from the first and second 90° pentaprisms and to produce first and second output beams that are mutually perpendicular. The first and second 90° pentaprisms may be see-through pentaprisms to produce a third output beam that is colinear or parallel with the input beam and perpendicular to the first and second output beams.
    Type: Application
    Filed: October 11, 2013
    Publication date: April 24, 2014
    Applicant: Hamar Laser Instruments, Inc.
    Inventor: Martin R. Hamar
  • Publication number: 20140104580
    Abstract: The disclosure provides a projection device, including an image source, a light-splitting module, and an imaging lens. The image source provides an image beam. The image beam includes a plurality of sub-image beams respectively emitted from a plurality of image areas of the image sources. The light-splitting module has at least one total reflection plane totally reflecting at least one sub-image beam of the sub-image beams and allowing at least another sub-image beam of the sub-image beams to transmit therethrough. The imaging lens includes a rear refractive-element group and a front refractive-element group. The rear and front refractive-element groups are configured on a transmission path of the image beam, and the light-splitting module is configured between the rear and front refractive-element groups.
    Type: Application
    Filed: April 29, 2013
    Publication date: April 17, 2014
    Applicant: YOUNG OPTICS INC.
    Inventors: Chih-Hsien Tsai, Chao-Shun Chen, Matthew Glen Hine
  • Publication number: 20140036364
    Abstract: A regular pentagonal arrangement of multiple selectively transmitting interfaces provides a beam-splitter and beam combiner in a compact and cost-effective package. The selectively transmitting interfaces are either provided on transparent plates, or alternatively can be external surfaces of a solid transparent prism. One or more of the sides of the regular pentagonal arrangement includes a transparent or absent surface, so that for beam-splitter operation, the input light can be introduced, and for beam combiner operation, the combined light can be emitted. In beam-splitter operation, the input optical beam is introduced through the transparent side, and is sequentially reflected between the plurality of selectively transmitting interfaces, with beams containing the wavelengths corresponding to each of the selectively transmitting interfaces being emitted from the corresponding surface to the outside of the beam-splitter.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 6, 2014
    Applicant: Optomak, Inc.
    Inventor: Sead Doric
  • Patent number: 8598559
    Abstract: Optical systems and methods in accordance with some embodiments discussed herein can receive one or more beams of light from the system's field of view. Internal optical components can then direct the beam of light, including splitting the beam of light, rotating at least one of the split beams of light, and displacing one or more of the beams of light, such that the split beams of light are parallel to each other. Each beam of light may then be directed onto at least one linear detector array. The linear detector array can transform the light into electrical signals that can be processed and presented in a human-readable display.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: December 3, 2013
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Scot T. Smith, Kimberly M. Blume
  • Patent number: 8570656
    Abstract: The embodiments herein describe how if a narrow wave length notch of light is used to illuminate or create an image source then the beam-splitter is only required to transmit over the narrow wavelength notch. If the concave mirror only reflects the same wavelength notch then all other wavelengths will pass through the mirror and be reflected by the beam-splitter. Each of the embodiments uses a method of optical design wherein certain portions or elements of the optical system are used for multiple purposes and/or transmit certain paths of light transmission in multiple directions. This use of multiple purposes and multiple paths produces embodiments of the invention that are smaller and more robust.
    Type: Grant
    Filed: April 4, 2010
    Date of Patent: October 29, 2013
    Inventor: Paul Weissman
  • Patent number: 8523361
    Abstract: A projection device with an illumination adjustment function includes a polarization beam splitter (PBS), a display, a light source, a lens module, a power supply unit, a light detection unit and a power controller. The light source emits light to the PBS. The lens module projects the images to be displayed by the display. The power supply unit supplies power for the light source. The light detection unit acquires a digital value of a portion of the light transmitted from the PBS, and compares the digital value with a predetermined digital value to generate a control signal. The power controller adjusts power from the power supply unit to the light source according the control signal until the digital value matches the predetermined digital value of the light from the light source.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: September 3, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Ying-Chuan Yu, Ying-Xiong Huang, Hsing-Chu Wu
  • Publication number: 20130215391
    Abstract: A light dividing structure used in an optical machine system of a projection apparatus is provided. The light dividing structure includes a first prism, a second prism, a third prism and a fourth prism. The first prism includes a first exiting surface, a first reflecting surface, a first concave portion and a second concave portion. The second prism is disposed on the second concave portion and is adjacent to the first prism. The third prism includes a second exiting surface, a second reflecting surface, a third concave portion and a fourth concave portion. The fourth prism is disposed on the fourth concave portion and is adjacent to the third prism and the first prism. The first prism, the second prism, the third prism and the fourth prism are connected together sequentially.
    Type: Application
    Filed: June 22, 2012
    Publication date: August 22, 2013
    Applicant: DELTA ELECTRONICS, INC.
    Inventor: Yuchang WANG
  • Patent number: 8503084
    Abstract: An optical arrangement and a related method for operating this optical arrangement are suggested, particularly in microscopes, for use as at least one of a main beam splitter and a beam combiner. One or more light beams can be coupled into the arrangement and at least one of the light beams that were coupled in can be coupled out again after having passed through the optical arrangement. In the path of the coupled in light beams at least one controllable microstructured element is provided, allowing to switch beam paths within the optical arrangement. This allows controlling or influencing the one or more light beams that are coupled out.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: August 6, 2013
    Assignee: Leica Microsystems CMS GmbH
    Inventors: Holger Birk, Volker Seyfried
  • Patent number: 8496335
    Abstract: A projector includes an illumination optical system, a light modulation element, and a projection optical system. The illumination optical system includes a first light source section, a plurality of second light source sections, and an optical axis conversion element. The optical axis conversion element emits the light beam, which is input from the first light source section, so that an exit optical axis of the light beam approximately matches with an illumination optical axis, and emits the light beams, which are respectively input from the plurality of second light source sections, so that exit optical axes of the light beams intersect the exit optical axis of the light beam from the first light source section between the optical axis conversion element and the light modulation element.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: July 30, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Yoshitaka Itoh
  • Patent number: 8491125
    Abstract: A lighting device configured to efficiently combine light beams emitted from a plurality of light sources, and to emit high output light while minimizing light loss, and a projection type display apparatus including the lighting device. The lighting device includes: a first light source and a second light source; two converging lenses for converging light beams emitted from the first and second light sources; two right-angle prisms for bending the light beams emitted from the first and second light sources; and a composite rod integrator for combining the light beams emitted from the first and second light sources. Between an exit surface of each right-angle prism and an incident surface of the composite rod integrator, a predetermined air gap is provided. The focal point of each converging lens is located on an incident surface of each right-angle prism.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: July 23, 2013
    Assignee: Panasonic Corporation
    Inventors: Shigekazu Yamagishi, Hiroki Sugiyama, Hiroshi Kitano, Yoshimasa Fushimi, Hirokazu Sakaguchi
  • Publication number: 20130128273
    Abstract: An optical element (20) is formed by bonding the faces of first to fourth triangular prisms (21, 22, 23, 24) that form the apex angle, wherein bonding faces (21a, 22b) of the first and second triangular prisms, bonding faces (22a, 23b) of the second and third triangular prisms, bonding faces (23a, 24b) of the third and fourth triangular prisms, and bonding faces (24a, 21b) of the fourth and first triangular prisms are respectively bonded through an optical thin film. Each optical thin film allows the incident light to pass through, or reflects the incident light, depending on the polarization state. The optical element (20) splits an optical path at a first position of the optical thin film, and combines optical paths at a second position of the optical thin film.
    Type: Application
    Filed: February 25, 2011
    Publication date: May 23, 2013
    Applicants: HAMAMATSU PHOTONICS K.K., SIGMA KOKI CO., LTD.
    Inventors: Asami Inoue, Kazuya Hirata, Daisuke Ito, Koshi Haraguchi, Shigeru Sakamoto
  • Patent number: 8446676
    Abstract: Provided is a head-mounted display element, including: a first casing (11) which incorporates therein at least a display element (21), and has a light projection window (11a) for projecting image light from the display element (21); a second casing (12) which incorporates therein an eyepiece optical system (31) with a refractive power, and has a light receiving window (12a) for receiving incident image light projected through the light projection window (11a) and an eyepiece window (12b) for emitting the image light that has passed through the eyepiece optical system (31); and a coupling portion (13) for coupling the second casing (12) to the first casing (11) so as to make adjustable a length of an optical path between the light projection window (11a) and the light receiving window (12a).
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: May 21, 2013
    Assignee: Olympus Corporation
    Inventors: Ryohei Sugihara, Yoichi Iba, Seiji Tatsuta
  • Patent number: 8395843
    Abstract: An array of light valves switch light by enabling and disabling total internal reflection (TIR) on a surface of the light valve. The disabling of the TIR is accomplished by putting another optical element in contact with the surface and then diffusing or changing the direction of the light. The mechanical mechanism to move the optical element is a simple one in that it only moves the optical element a small distance to change the valve from a first position to a second position.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: March 12, 2013
    Assignee: Rambus International Ltd.
    Inventor: Brian Edward Richardson
  • Patent number: 8393737
    Abstract: A light engine combines light of first, second, and third color ranges using three pentagonal prism elements. Each prism has first and second diagonal surfaces. Each first diagonal surface has a first dichroic treatment and each second diagonal surface has a second dichroic treatment. The prisms are arranged with the first diagonal surface of the first prism juxtaposed with one diagonal surface of the third prism and with the second diagonal surface of the second prism juxtaposed with the other diagonal surface of the third prism. A first light beam of the first color is reflected at a right angle by the first diagonal surfaces, and a second light beam is reflected at a right angle by the second diagonal surfaces. A third light beam of the third color passes unreflected through the surfaces to produce a combined light beam or common output light path.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: March 12, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Mahendra S. Dassanayake, Donald P. Bilger
  • Patent number: 8376551
    Abstract: A color combining apparatus has first, second, and third color channels, each color channel having a light source that is energizable to direct light of a corresponding first, second, or third wavelength band, respectively, toward a color combining element. The color combining element is a single piece of a solid, transparent material having at least first and second flat coated surfaces that are noncontiguous. The first coated surface is treated to reflect incident light of the first wavelength band onto an optical axis and to transmit incident light of the second and third wavelength bands. The second coated surface is treated to reflect incident light of the second wavelength band and to transmit incident light of the third wavelength band.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: February 19, 2013
    Assignee: Corning Incorporated
    Inventor: Joshua Monroe Cobb
  • Patent number: 8317330
    Abstract: The image display apparatus forms first and second images in mutually different viewing angle areas to display a combined (joined) image. The apparatus includes first and second image-forming elements respectively forming first and second original images, a first optical system reflecting a first light flux from the first image-forming element at least twice to introduce the first light flux to an exit pupil, and a second optical system reflecting a second light flux from the second image-forming element at least twice to introduce the second light flux to the first optical system. The first optical system introduces the first light flux and the second light flux from the second optical system to the exit pupil such that the first and second images respectively corresponding to the first and second original images are formed in the mutually different viewing angle areas in a first cross section.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: November 27, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoichi Yamazaki, Kazutaka Inoguchi, Kenichi Saito, Motomi Tsuyuki, Masakazu Tohara
  • Patent number: 8265338
    Abstract: A method and apparatus for optical damage assessment using an existing imaging focal plane array and a fixed or moving set of optics and filters. Advantages include cost reductions and improved reliability due to fewer components and therefore fewer points of failure.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: September 11, 2012
    Assignee: Lockheed Martin Corporation
    Inventor: William H. Barrow
  • Patent number: 8259378
    Abstract: A scanning apparatus operable in the microwave, mm-wave, sub mm-wave (Terahertz) and infrared ranges comprises a primary drum (10) mounted for rotation about a central axis A of the primary drum being hollow and of rectangular polygonal form to provide a number of sides or facets (12, 14) each adapted to transmit such radiation, from a field of view, which is plane polarized in a first direction at 45° with respect to the rotary axis of the drum and to reflect radiation which is plane polarized in an orthogonal direction. Thus, radiation passing into the drum though whichever said side of the drum is currently facing the field of view and passing towards the diametrically opposite side will be plane polarized with a polarization direction such as to be reflected back by that diametrically opposite side towards the rotary axis of the drum.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: September 4, 2012
    Assignee: Farran Technology Limited
    Inventors: Alan H. Lettington, Brenda Lettington, legal representative
  • Patent number: 8237626
    Abstract: A head-mounted device mounted on a wearer's head has a first pressing unit to press against the wearer's head from a position of his/her medulla, a second pressing unit to press against the wearer's head in an opposite direction to a pressing direction of the first pressing unit, and a mounting unit to mount the head-mounted device on the wearer's head by adjusting at least one of the first pressing unit and the second pressing unit.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: August 7, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiki Ishino, Takaaki Nakabayashi, Yoshihiro Saito, Toshiyuki Okuma
  • Patent number: 8209134
    Abstract: Methods are disclosed wherein the structural health of a civil structure, such as, but not limited to, a bridge or the like is measured by electronic distance measurement (EDM) from a plurality of stable locations to a plurality of cardinal points on the structure in a methodical manner. By measuring the coordinates of the cardinal points, the dynamic and long-term static behavior of the structure provide an indication of the health of the structure. Analysis includes: comparison to a Finite Element Model (FEM); comparison to historical data; and modeling based on linearity, hysteresis, symmetry, creep, damping coefficient, and harmonic analysis.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: June 26, 2012
    Assignees: Sophie Lin
    Inventors: David H. Parker, John M. Payne, Sophie Lin, legal representative
  • Patent number: 8125700
    Abstract: An optical scanning apparatus includes a first optical member for receiving a plurality of light beams with an interval and for causing a first group of beams to emerge with a narrower interval, the first optical member being rotatable to adjust the interval of the beams emergent therefrom; a second optical member for receiving a second light beam and the first group of beams emergent from the first optical member with an interval and for causing a third group of beams to emerge with a narrower interval, the second optical member being rotatable to change the interval between the first group of beams and the second beam; and deflecting means for scanningly deflecting a third group of beams emergent from the second optical member.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: February 28, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Haruhiko Nakatsu
  • Patent number: 8120830
    Abstract: An optical scanning apparatus includes a first optical member for receiving a plurality of light beams with an interval and for causing a first group of beams to emerge with a narrower interval, the first optical member being rotatable to adjust the interval of the beams emergent therefrom; a second optical member for receiving a second light beam and the first group of beams emergent from the first optical member with an interval and for causing a third group of beams to emerge with a narrower interval, the second optical member being rotatable to change the interval between the first group of beams and the second beam; and deflecting means for scanningly deflecting a third group of beams emergent from the second optical member.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: February 21, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Haruhiko Nakatsu
  • Patent number: 8107169
    Abstract: A programmable spectrum light source is disclosed. In one embodiment, the programmable light source comprises a light source, a spectrum separation system that splits the light into its constituent spectral components, a light modulator that modulates the spectral components according to a required spectral envelope and a light recombination system that recombines the shaped spectral components to produce light with a required spectrum.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: January 31, 2012
    Inventors: Udayan Kanade, Manohar Joshi
  • Publication number: 20120018616
    Abstract: Optical systems and methods in accordance with some embodiments discussed herein can receive one or more beams of light from the system's field of view. Internal optical components can then direct the beam of light, including splitting the beam of light, rotating at least one of the split beams of light, and displacing one or more of the beams of light, such that the split beams of light are parallel to each other. Each beam of light may then be directed onto at least one linear detector array. The linear detector array can transform the light into electrical signals that can be processed and presented in a human-readable display.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 26, 2012
    Applicant: Northrop Grumman Systems Corporation
    Inventors: Scot T. Smith, Michael L. Blume, Kimberly M. Blume
  • Patent number: 8100535
    Abstract: An optical system is provided. The optical system comprises a first polarizing beamsplitter (PBS), a first reflecting image-forming device, and a first quarter-wave retarding element. An optical system is also provided that comprises an image-forming device, a reflective polarizing layer, at least a first birefringent element disposed on an optical path between the image-forming device and the polarizing layer, and a quarter-wave retarding element. Further provided is an optical system comprising a color combiner unit, at least two polarizing beamsplitters (PBSs), and a first quarter-wave retarding element. The present application also provides methods of compensating for birefringence in an image projection system.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: January 24, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: David J. W. Aastuen, Charles L. Bruzzone, Jiaying Ma
  • Patent number: 8085471
    Abstract: A light integrating device for an illumination system and an illumination system. The illumination system includes a first light source module and a second light source module providing a first light and a second light, respectively. The device includes first and second light collecting elements and a beam splitting element. The first light travels into the first light collecting element and is split into a plurality of light groups by the beam splitting element. At least one light group travels into the second light collecting element from the beam splitting element. The second light travels into the second light collecting element, is reflected by the beam splitting element and emits out from the second light collecting element along the principle axis of the light integrating device together with the at least one light group which is split from the first light and travels into the second light collecting element.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: December 27, 2011
    Assignee: Delta Electronics, Inc.
    Inventor: June-Jei Huang
  • Patent number: 8066380
    Abstract: At least one exemplary embodiment is directed to a projector which includes several optical elements, reflective devices and beam splitters, arranged to reduce back reflection effects. At least one exemplary embodiment includes a mirror, two beam splitters, three reflection devices, and two optical elements affecting polarization of incident light upon the optical elements.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: November 29, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhiro Inoko
  • Patent number: 8045273
    Abstract: A projection apparatus includes a first, a second and a third light sources, a first reflective element, a first and a second dichroic mirrors, a light-homogenizing element, a light valve and a projection lens. The first reflective element is configured to reflect the first light beam, and the first dichroic mirror is configured to reflect the second light beam and to transmit the first light beam transmitted from the first reflective element. The second dichroic mirror is configured to reflect the first and the second light beams transmitted from the first dichroic mirror and to transmit the third light beam. The light-homogenizing element is used for homogenizing the combined light beam, and the light valve is used for modulating the combined light beam to form an image beam. The projection lens is used for receiving and then projecting the image beam.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: October 25, 2011
    Assignee: Young Optics Inc.
    Inventors: Sung-Nan Chen, Chao-Shun Chen
  • Patent number: 8025416
    Abstract: In an embodiment, an optical component is provided. The optical component includes a first polarizing prism having a first face, a second face and a third face. The light beam may be received incident on the first face. Light having a first polarization may be output through a second face and light having a second polarization may be output through a third face. The optical component further includes a half-wave plate fastened to the second face of the first polarizing prism. The optical component further includes a first reflecting prism connected to the third face of the first polarizing prism. The first reflecting prism has a first face and a second face, the first face connected to the third face of the first polarizing prism. The optical component further includes a second reflecting prism connected to the half-wave plate and to the second face of the first reflecting prism. The second reflecting prism has a first face, a second face and a third face.
    Type: Grant
    Filed: February 18, 2008
    Date of Patent: September 27, 2011
    Inventor: William S. Oakley
  • Patent number: 8022835
    Abstract: An improved optic system for measuring and/or controlling displacement, force, pressure, position, or chemistry is disclosed. This apparatus allows for more accurate, robust, and economical communication between the transducer (or control input element) and the reader device (or control output), allows the use of a single optic fiber and/or or a gap for the communication link, and produces substantial insensitivity to attenuation due to mechanical, chemical, thermal, and radiation effects acting on the optic fiber or open space in which the signal propagates. It is also significantly immune to interference from electromagnetic radiation, since the link can be easily produced as a non-conductor which will not propagate unwanted electrical energy or lightning, and is intrinsically safe from igniting fires or explosions. It also facilitates use on rotating machinery and remote location of the transducer by the ability to transmit the signal across a large gap or air space.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: September 20, 2011
    Inventor: Nathan John Coleman
  • Patent number: 8009363
    Abstract: Embodiments of the present invention are directed to single prism beamsplitters and compound beamsplitters formed from combining one or more of the single prism beamsplitters. In one embodiment, the beamsplitters can be configured to produce one or more split beams of light that can emerge at angles other than 90° to one another. The prisms of the beamsplitter embodiments are configured so that light propagating through prisms encounter one or more intermediate planar surfaces at various angles with respect to the path of the light. A certain number of the intermediate planar surfaces can be angled so that the light transmitted along a particular path undergoes total internal reflection within the prism. A number of other intermediate planar surfaces are angled so that the light transmitted along a particular path does not undergo total internal reflection.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: August 30, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Huei Pei Kuo, Michael Renne Ty Tan
  • Patent number: 8000020
    Abstract: There is provided an optical system, including a substrate having a major surface and edges, an optical element for coupling light into the substrate by total internal reflection, a reflecting surface carried by the substrate, a retardation plate and a reflecting optical element. The retardation plate is located between a portion of the major surface of the substrate and the reflecting optical element.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: August 16, 2011
    Assignee: Lumus Ltd.
    Inventor: Yaakov Amitai
  • Patent number: 7984994
    Abstract: A projection optical system including a projection lens, a first mirror that reflects a light from the projection lens, and a second mirror that widens an angle of a light from the first mirror by reflecting the light projects a light modulated according to an image signal from an optical engine unit. A third mirror reflects a light from the projection optical system. A screen transmits a light from the third mirror. An optical axis of the projection lens substantially matches an optical axis of the second mirror, and the light from the optical engine unit is shifted to a specific side from the optical axis of the projection lens.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: July 26, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Eiji Morikuni, Masatoshi Yonekubo, Toshihiko Sakai, Shunji Kamijima
  • Patent number: 7982972
    Abstract: The image observation apparatus includes a first image-forming element and a second image-forming element each of which forms an original image, and an optical system configured to introduce light fluxes from the first and second image-forming elements to an exit pupil position of the optical system where an eye of an observer is placed. The optical system includes an optical surface as a single surface that reflects the light flux from the first image-forming element and transmits the light flux from the second image-forming element. The first image-forming element and the second image-forming element respectively form a first original image and a second original image that correspond to different viewing fields from the exit pupil position. The apparatus combines plural original images to enable observation of one combined image and that can suppress generation of light scattering.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: July 19, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazutaka Inoguchi, Shoichi Yamazaki, Kenichi Saito, Motomi Tsuyuki, Masakazu Tohara
  • Patent number: 7959297
    Abstract: A digital image projector includes a light assembly configured to project light along a light path from at least one laser array light source, the projected light having an overlapping far field illumination in a far field illumination portion of the light path; a temporally varying optical phase shifting device configured to be in the light path; an optical integrator configured to be in the light path; a spatial light modulator located downstream of the temporally varying optical phase shifting device and the optical integrator in the light path, the spatial light modulator configured to be located in the far field illumination portion of the light path; and projection optics located downstream of the spatial light modulator in the light path, the projection optics configured to direct substantially speckle free light from the spatial light modulator toward a display surface.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: June 14, 2011
    Assignee: Eastman Kodak Company
    Inventors: Barry D. Silverstein, Gary E. Nothhard
  • Patent number: 7961399
    Abstract: The addition of DMD illumination modulator(s) 702 in series with projection SLM(s) 706/709 to produce high-performance projection displays with improved optical efficiency, reliability, and lower maintenance requirements. This approach eliminates the vibration, audible noise, and safety problems associated with high speed rotating color filter wheels 203 commonly used in SLM projectors and controls the light applied to individual areas of the projection SLM(s).
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: June 14, 2011
    Assignee: Texas Instruments Incorporated
    Inventor: Steven M. Penn