Reflector Patents (Class 353/98)
  • Patent number: 10690933
    Abstract: A speckle reduction instrument having a parabolic reflector and flat mirror to form a cavity-based unit. Laser light is collected and bounced around the cavity hitting a diffuser surface multiple times. The laser light that is highly coherent is converted into less-coherent but still bright light suitable for illumination in microscopes and other devices. Also disclosed is the related method for reducing speckle.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: June 23, 2020
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Robert Furstenberg, Chris Kendziora, R. Andrew McGill
  • Patent number: 10627711
    Abstract: A light source device comprising: a light source section which generates any one of blue light, red light, and green light; a phosphor which generates a fluorescence including the two colors other than the color of the light emitted from the light source section; a color-changing section which changes one of the two colors of the fluorescence emitted from the phosphor to another color regularly and irradiates it to the image-forming element; and a light path-switching section which switches a light path in which a fluorescence excited by the color light emitted from the light source section passes towards the color-changing section and a light path in which the color light emitted from the light source section passes towards the image-forming element regularly.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: April 21, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Ikuo Maeda, Kazuhiro Fujita, Toshiharu Murai, Tatsuya Takahashi, Takehiro Nishimori
  • Patent number: 10573208
    Abstract: An image display apparatus according to an embodiment of the present technology includes an image display unit, a calculator, and a notification section. The image display unit includes an emission surface and displays an image by emitting light from the emission surface. The calculator calculates a reference distance from the emission surface, the reference distance serving as a determination criteria for an influence of emitted light that is emitted from the image projection section. The notification section notifies about information on the influence of the emitted light on the basis of the calculated reference distance.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: February 25, 2020
    Assignee: SONY CORPORATION
    Inventor: Shoji Mitsuhashi
  • Patent number: 10560595
    Abstract: A device and a method for deflecting a beam of light. The device is developed together with: an adjustable deflection device; a closed-loop control unit, which is designed to generate an actuating signal by which the deflection device is controlled in a periodic movement for scanning a solid angle region with the aid of a beam of light deflected by the deflection device; and a detector device, which is designed to detect an impingement or a missing impingement of the scanning beam of light on the detector device, and to generate a measuring signal based thereon; the closed-loop control unit furthermore being designed to adapt the actuating signal based on at least the measuring signal.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: February 11, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Dominik Messner, Mohamad Iyad Al Dibs
  • Patent number: 10557981
    Abstract: Disclosed herein is a surface lighting apparatus. According to the present invention, the surface lighting apparatus comprises a light guiding unit for dispersing light input from light source through patterns formed in the light guiding unit, a reflecting unit formed at a lower part of the light guiding unit to reflect light being out among dispersed light of the light guiding unit, a diffusing unit adjoining an upper part of the light guiding unit and scattering light dispersed from the light guiding unit, and a refract guiding unit formed between the light source and the light guiding unit and concentrating total light input by refracting at least a part of light input from the light source to guide the light to the light guiding unit.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: February 11, 2020
    Assignee: KOLON GLOTECH, INC.
    Inventor: Byoung Cheul Park
  • Patent number: 10534252
    Abstract: A projection optical system and that includes a relatively small number of lenses and are able to cover a wide zooming range and a projector. A 1-2 lens group which is a focus lens group is constituted with a lens which includes a single positive lens having a convex surface to the reduction side, a lens which includes a single negative meniscus lens having a convex surface to an enlargement side, and a lens which includes a single negative lens, and the 1-2 lens group is moved at the time of focusing accompanying magnification change.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: January 14, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Nobutaka Minefuji
  • Patent number: 10520803
    Abstract: A projector device includes an illumination module and an imaging module. The imaging module is connected to the illumination module and includes a housing, a relay optical system, and a projection optical system. The housing has a first annular receiving groove and a second annular receiving groove. The first annular receiving groove is closer to the illumination module than the second annular receiving groove. A center axis line of the first annular receiving groove and a center axis line of the second annular receiving groove are on the same axis line. The relay optical system includes a lens received in the first annular receiving groove. The projection optical system includes a lens and a reflecting mirror received in the second annular receiving groove. Mirror centers of the lenses and a mirror center the reflecting mirror are located on the same axis line.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: December 31, 2019
    Assignee: ARIMA COMMUNICATIONS CORP.
    Inventors: Wen-Tsung Lee, Chih-Huang Wang, Hsiang-Lin Yu, Chao-Cheng Chou, Dung-Rur Juang, Ming-Chao Wu
  • Patent number: 10481479
    Abstract: An improved virtual reality system comprising an immersive sound system, sensors, a power source, communications, data processing, and an optical system that delivers photoreceptor density resolution, wide angle, high contrast, binocular vision, continuous depth of field images, is integrated for a fully immersive experience. In one embodiment, an optical system comprises a miniaturized array of projectors geometrically arranged to cover the photoreceptive areas of the retina. The projectors provide full spectrum, amplitude modulated, and controllably divergent beams of light that can be steered with one or more degrees of freedom. These beams are subsequently reflected off a compound curved reflector, through additional optics, and along reversible light paths to form images on the retina. Segmented projector arrays greatly improve dynamic performance.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: November 19, 2019
    Inventor: Ronald S. Maynard
  • Patent number: 10444508
    Abstract: An apparatus generates a coherent illumination beam. An embedded light-scattering apparatus in a transparent substrate illuminates a reflective optical element which is also embedded inside the same substrate. The reflective optical element is designed to provide a desired beam profile.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: October 15, 2019
    Assignee: CY Vision Inc.
    Inventors: Hakan Urey, Fehmi Civitci, Yusuf Samet Yaras, Hazal Er
  • Patent number: 10409149
    Abstract: A phosphor wheel has a phosphor-supporting surface on which is formed a phosphor that generates fluorescent light in response to the incidence of light; and a reflecting surface that reflects the incident light, the phosphor-supporting surface and the reflecting surface being formed both to be parallel to each other to have a distance between them in the perpendicular direction of each surface.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: September 10, 2019
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Noriko Nagase
  • Patent number: 10401629
    Abstract: A spectacle lens for a display device that can be fitted on the head of a user and generate an image guides light bundles of pixels of the generated image, which are coupled into the spectacle lens via the coupling-in section of the spectacle lens, in the spectacle lens by reflections on the rear side and a reflecting surface lying opposite this to the coupling-out section and coupling them out of the spectacle lens via the coupling-out section. A splitter layer reflects a portion of light bundles reflected by the rear side towards the rear side and transmits a portion, wherein after reflection on the rear side the reflected portion strikes the splitter layer again and there, once again, is partially reflected towards the rear side and partially transmitted. The transmitted portions strike the facets are coupled out of the spectacle lens through the splitter layer and the rear side.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: September 3, 2019
    Assignee: tooz technologies GmbH
    Inventors: Hans-Juergen Dobschal, Karsten Lindig
  • Patent number: 10379430
    Abstract: A dustproof apparatus according to an embodiment of the present technology includes a casing portion, a fan portion, a sensor unit, and a control unit. The casing portion is capable of accommodating an image display apparatus and includes an inlet and an outlet that discharges air sucked in from the inlet. The fan portion is provided at the outlet or the inlet. The sensor unit is capable of respectively measuring a first temperature which is a temperature of the air in a vicinity of the inlet and a second temperature which is a temperature of the air in a vicinity of the outlet. The control unit controls drive of the fan portion on a basis of a temperature difference between the first temperature and the second temperature measured by the sensor unit.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: August 13, 2019
    Assignee: SONY CORPORATION
    Inventor: Chiharu Tanaka
  • Patent number: 10368060
    Abstract: A head mounted display includes a first and second light sources, a light turning prism, a field lens group, an image output module, a first and second eyepiece modules. The first and second light sources are respectively configured to emit first and second lights. The image output module is configured to receive the first light and the second light, and to respectively generate a first image light and a second image light with corresponding image information. The light turning prism is optically coupled between the first light source (or the second light source) and the field lens group. The light turning prism is configured to vary a propagating direction of the first light (or the second light) from the first light source (or the second light source) to the image output module. The first/second eyepiece modules are configured to make the second/first image light image to first/second target positions.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: July 30, 2019
    Assignee: DELTA ELECTRONICS, INC.
    Inventor: June-Jei Huang
  • Patent number: 10365552
    Abstract: A light source comprising an excitation light source for providing excitation light, and an optical wavelength conversion member disposed at a distance from the excitation light source. The optical wavelength conversion member comprises an optical wavelength conversion material for converting the excitation light into stimulated light. The light source also comprises an optical-guiding member that allows the excitation light to be incident on the optical wavelength conversion material, and an optical-collecting member for collecting converted light originating from the optical wavelength conversion material. To separate the paths of the converted light and the excitation light, the etendue of the optical-guiding member is less than or equal to ¼ of the etendue of the optical-collecting member. This allows the optical-guiding member to draw in the excitation light while preventing the excessive escape of the converted light through the optical-guiding member.
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: July 30, 2019
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Yi Li, Yi Yang
  • Patent number: 10338381
    Abstract: An image display apparatus includes an image forming element, an illumination optical system that guides light emitted from a light source to the image forming element, and a plurality of lenses that project a trapezoidal image formed by the image forming element onto a projected surface. The plurality of lenses have an optical axis that is at an inclination of 1° or more with respect to a perpendicular of a plane including an image forming surface of the image forming element. First rays of the light have a first focal point and second rays of the light have a second focal point. The first focal point is farther from the image forming element than the second focal point is from the image forming element. The first rays form the first portion of the trapezoidal shape and the second rays form the second portion of the trapezoidal shape.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: July 2, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Hibiki Tatsuno
  • Patent number: 10331022
    Abstract: A light source module includes a solid-state light source and a wavelength conversion wheel. The solid-state light source provides a light beam. The wavelength conversion wheel has a wavelength conversion region and a penetration region. The wavelength conversion region converts the light beam to generate a conversion beam. A substrate of the wavelength conversion wheel includes a first surface and a second surface opposite to the first surface. The wavelength conversion region includes a first conversion region and a second conversion region. The first and the second conversion regions are respectively located on the first and the second surfaces. The penetration region is connected to the first and the second surfaces. The wavelength conversion region and the penetration region are symmetrically disposed by using a symmetry point of the substrate as a reference point. A projection apparatus including the light source module is disclosed.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: June 25, 2019
    Assignee: Coretronic Corporation
    Inventors: Kuan-Ta Huang, Ming-Tsung Weng
  • Patent number: 10247927
    Abstract: In the zoom lens, a first optical system is formed on the magnification side, and a second optical system is formed on the reduction side, with the intermediate image formed between the first optical system and the second optical system. The second optical system consists of, in order from the magnification side, a first lens group that has a positive power, a second lens group that has a positive power, a third lens group that has a positive or negative power, and a fourth lens group that has a positive power. During zooming, the second lens group and the third lens group are moved by changing spacings between the groups adjacent to each other in a direction of an optical axis, and the fourth lens group remains stationary with respect to the reduction side imaging plane.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: April 2, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Kazuki Inoue, Yukiko Nagatoshi
  • Patent number: 10241323
    Abstract: A micromechanical device and a method for the two-dimensional deflection of light. The device includes a mirror unit having a mirror surface for deflecting light striking the mirror surface; the mirror unit being rotatably situated about a first axis within a first frame unit and being fastened to the first frame unit; the first frame unit being rotatably situated about a second axis within an actuator structure and being fastened to the actuator structure; the actuator structure including at least four piezoelectric actuator units; and the positions of the at least four piezoelectric actuator units being situated symmetrically with respect to the first axis and also with respect to the second axis.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: March 26, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Mirko Hattass, Robert Maul
  • Patent number: 10222009
    Abstract: An illumination apparatus includes a semiconductor laser device to generate a plurality of laser beams, a light wavelength conversion element configured to convert at least a portion of the light of the laser beams into light having a different wavelength, and an optical unit configured to direct the laser beams onto a surface of the light wavelength conversion element. The optical unit includes a mirror element able to be panned about an axis and is configured to guide the laser beams over at least one surface section of the surface of the at least one light wavelength conversion element. The optical unit includes a structure configured to adjust a divergence or expansion of the laser beams along at least one of a slow axis or a fast axis of the laser beams on the surface section of the surface of the at least one light wavelength conversion element.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: March 5, 2019
    Assignee: OSRAM GmbH
    Inventors: Oliver Woisetschlaeger, Frank Buchmann
  • Patent number: 10190743
    Abstract: A display device (30) comprises a reflective display (38) arranged to render a first image viewable through a viewing surface and a projection means (31-37) arranged to render a second image viewable in reflection on the viewing surface, the reflective display (38) and the projection means (31-37) being mounted on a common frame.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: January 29, 2019
    Assignee: E Ink Corporation
    Inventors: Dirk Hertel, Richard J. Paolini, Benjamin Harris Paletsky, Stephen J. Telfer, Sunil Krishna Sainis, David Paul Biss, Stephen Dennis Fantone
  • Patent number: 10148856
    Abstract: A portable teleprompter system, which comprises two sets of transparent reflective sheets with their respective support poles and associated displays, the system comprising a carry-on-sized suitcase that holds the system components and has two separable parts, each one of which is fit to be arranged in a stable manner on a floor, offering an upwards-facing operating face that is provided with at least means for firmly supporting a display; and means for anchoring a pole in such a position that the reflective sheet supported by said pole can reflect the content shown on the display.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: December 4, 2018
    Inventor: Luis Arroyo Martinez
  • Patent number: 10108078
    Abstract: A projection-type image display device includes a light source, a phosphor, a filter, and a filter driver. The light source emits blue illumination light. The phosphor generates yellow illumination light, which includes red illumination light and green illumination light from a part of the blue illumination light, and reflects the blue illumination light and the yellow illumination light. The filter reflects the blue illumination light, which is reflected by the phosphor, toward the phosphor, and transmits the yellow illumination light therethrough. The filter driver controls the reflection amount of the blue illumination light toward the phosphor by controlling the insertion amount of the filter onto the optical path of the blue illumination light. The phosphor generates yellow illumination light also from the blue illumination light reflected by the filter.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: October 23, 2018
    Assignee: JVC KENWOOD CORPORATION
    Inventors: Shinji Kikuma, Takatsugu Aizaki, Yasuki Arihara
  • Patent number: 10025173
    Abstract: Disclosed is a projection optical system, including a first lens group configured to include at least one lens and have a positive refractive power, a second lens group configured to include at least one lens and have a positive refractive power, a third lens group configured to include at least one lens and have a negative refractive power, a fourth lens group configured to include at least one lens configured to have an aspheric surface or a free-form surface, and a concave mirror, wherein the first lens group, the second lens group, the third lens group, the fourth lens group, and the concave mirror are arranged in order and the projection optical system is a non-telecentric optical system.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: July 17, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventor: Hibiki Tatsuno
  • Patent number: 9964733
    Abstract: A holding structure holds a reflecting mirror. The holding structure includes a reflecting mirror bracket holding the reflecting mirror; a protrusion disposed on the reflecting mirror; a protrusion supporting part disposed on the reflecting mirror bracket and supporting the protrusion; and a spacer disposed between the protrusion supporting part and the reflecting mirror bracket.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: May 8, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuya Fujioka, Akihisa Mikawa, Hideo Kanai, Yasunari Mikutsu, Satoshi Tsuchiya, Takahiro Hiramatsu, Yukimi Nishi, Jun Mashimo, Yoshito Saito
  • Patent number: 9958766
    Abstract: A light source unit according to an aspect of the invention includes a first semiconductor light emitting device disposed centrally and a second semiconductor light emitting device disposed outwards of the first semiconductor light emitting device, the first and second semiconductor light emitting devices emitting lights, and a first collimator lens disposed centrally and a second collimator lens disposed outwards of the first collimator lens, the first and second collimator lenses being disposed so as to correspond to the first and second semiconductor light emitting devices, respectively, on sides of the first and second semiconductor light emitting devices from which the lights are emitted, and a degree at which the light of the first semiconductor light emitting device is collected onto an illuminated surface differs from a degree at which the light of the second semiconductor light emitting device is collected onto the illuminated surface.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: May 1, 2018
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Chihaya Sugiyama
  • Patent number: 9942528
    Abstract: The invention relates to a wavelength conversion element including: a substrate including a light-reflecting surface and rotatable around an axis of rotation; and a wavelength conversion layer supported by the light-reflecting surface. The wavelength conversion layer has a distribution of reflectance, along a circle centered on the axis of rotation, with respect to excitation light to excite the wavelength conversion layer. An average reflectance of the wavelength conversion layer with respect to the excitation light per the circle varies depending on a radius of the circle.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: April 10, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Akiyama
  • Patent number: 9762873
    Abstract: A scanning projector includes a MEMS device with a scanning mirror that sweeps a beam in two dimensions. Actuating circuits receive scan angle information and provide signal stimulus to the MEMS device to control the amount of mirror deflection on two axes. The scan angle information may be modified to maintain a constant image size, a constant image brightness, and/or to correct for keystone distortion.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: September 12, 2017
    Assignee: Microvision, Inc.
    Inventors: Jari Honkanen, P. Selvan Viswanathan
  • Patent number: 9723277
    Abstract: A projection method, a projection apparatus and an electronic device are provided. The method may include: acquiring a target content to be projected in an electronic device; determining a projection parameter for the target content; adjusting a beam output mode of a light path changing module for projection beams of the target content based on the projection parameter; and based on the beam output mode, projecting, via the light path changing module, the projection beams of the target content into a first region of a projection carrier located away from the electronic device by a first distance, where the area of the first region varies with the beam output mode. With the projection method, the projection apparatus and the electronic device in the application, the area of the projection region can be adjusted easily, so that multiple users can use the electronic device to watch the projection conveniently.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: August 1, 2017
    Assignees: Beijing Lenovo Software Ltd., Lenovo (Beijing) Co., Ltd.
    Inventors: Qiang Song, Xiangbo Lv, Jianguo Li, Kai Cheng
  • Patent number: 9690176
    Abstract: In a projection optical apparatus, a refractive system includes a plurality of lens groups, one of which includes a first lens located in a position closest to a reflective system and a first lens frame having an accommodation section that accommodates the first lens. The first lens has a lens cutoff section, and the accommodation section has a wall section that is located outside the lens cutoff section and a first opening section that exposes a side surface of the first lens that is opposite the lens cutoff section. The wall section is provided with an open section that exposes the lens cutoff section. A guide barrel is so formed as to expose the first opening section and the open section. A projection optical apparatus enclosure has a second opening section that exposes the first opening section and is configured to be capable of exposing the open section.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: June 27, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Naoto Takehana
  • Patent number: 9669323
    Abstract: A children's toy drum having a drum head that is partially reflective and partially light transmissive. Lights inside of the drum are visible through the drum head when illuminated, and when the lights are not illuminated the drum head acts as a mirror reflecting external light and obscuring visibility of the drum's interior. A second reflector can be positioned toward the base of the drum to generate a light tunnel or other visual effect.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: June 6, 2017
    Assignee: KIDS II, INC.
    Inventors: Elliot Raderman, Milton Aaron Flores
  • Patent number: 9625797
    Abstract: A projection optical device to project an image on a projection plane, includes a reflection mirror, a plurality of projection lenses, a projection lens supporting member to support the plurality of projection lenses, and a position-arrangement member provided at the projection lens supporting member to arrange the reflection mirror at a predefined position on the projection lens supporting member.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: April 18, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Satoshi Tsuchiya, Tetsuya Fujioka, Hideo Kanai, Masamichi Yamada, Yasunari Mikutsu, Naoyuki Ishikawa, Akihisa Mikawa, Yukimi Nishi
  • Patent number: 9594461
    Abstract: An apparatus, method and computer readable media for hosting, controlling, displaying, manipulating and/or transferring hologram(s) or holographic image(s), videos and/or multimedia data. The invention contemplates the use of a number of components, including without limitation, a retractable flexible screen, projector(s), processor(s), memory and also contemplates computer readable media for code necessary for the implementation of invention's embodiments.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: March 14, 2017
    Inventor: Isaac S. Daniel
  • Patent number: 9554103
    Abstract: A projector can be easily attached by mounting a connecting unit to a socket for illumination in an ordinary home. Since the projector includes a communication unit configured to receive an electronic mail, the projector updates an image signal and adjusts a diffusion degree of modulated light by a light-diffusion adjusting unit on the basis of contents of the mail received by the communication unit. Therefore, when a user desires to inform family members who will return home that the user suddenly has to go out, if the user transmits in advance, to the projector, a mail including a message for a family member who returns home, the family member who returns home turns on an illumination switch at the entrance, whereby the projector can start up, perform an illuminating function, and clearly project and display the message.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: January 24, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tadashi Kinebuchi, Kaoru Yamaguchi
  • Patent number: 9516932
    Abstract: An article of manufacture includes decorative ornamentation relating to constellations. More specifically, the article of manufacture bears at least a first and a second pattern of first and second elements, respectively. In the first pattern, the first elements are arranged in relative positions that correspond to relative positions of stars in a first constellation. In the second pattern, the second elements are arranged in relative positions that correspond to relative positions of stars in a second constellation. The first and second patterns are superimposed on each other, forming a decorative ornamentation that represents a composite of the first and second constellations. The patterns can be configured so that a relative size of each element corresponds to a relative brightness of the constellation star corresponding to that element.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: December 13, 2016
    Assignee: Inspired Design Creations, Inc.
    Inventor: Jeet Sohal
  • Patent number: 9500941
    Abstract: An illumination device includes a light source device adapted to emit a third light beam including a first component in a first polarization state, a polarization separation element to which the third light beam is input, a retardation element, and a diffusely reflecting element having a concavo-convex structure including a plurality of curved surfaces. The first component having passed through the retardation element via the polarization separation element, is then reflected by the diffusely reflecting element, then passed through the retardation element again, and then enters the polarization separation element. Thus, the fourth component in the second polarization state out of the first component is emitted from the illumination device via the polarization separation element.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: November 22, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Koichi Akiyama, Akihiro Kashiwagi
  • Patent number: 9485481
    Abstract: A laser module is described for an image projection system, which has a duochromatic laser diode designed to generate a first beam bundle having laser light of a first wavelength and laser light of a second wavelength; a first collimating optics system designed to collimate the first beam bundle; at least one first monochromatic laser diode designed to generate a second beam bundle having laser light of a third wavelength; a second collimating optics system designed to collimate the second beam bundle; and a first optical combination device developed to combine the first and second beam bundles in order to form an output beam bundle of the laser module.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: November 1, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Frank Fischer, Gael Pilard
  • Patent number: 9476573
    Abstract: Various embodiments relate to a lighting apparatus including at least one light generating device for generating primary light, and at least one phosphor wheel arranged optically downstream of the light generating device. The phosphor wheel may include at least one phosphor for wavelength conversion of the primary light into secondary light. A plurality of phosphor wheels are arranged optically downstream of the light generating device.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: October 25, 2016
    Assignee: OSRAM GMBH
    Inventor: Oliver Mehl
  • Patent number: 9447947
    Abstract: An illumination device includes a primary light unit for the emission of primary light, a phosphor element for the conversion of an excitation light part of the primary light and as a result the emission of conversion light, and a coupling element, to supply the excitation light part of the primary light to the phosphor element. The element has a first conversion region, which is configured to emit a first conversion light, and a second conversion region, which is configured to emit a second conversion light, which differs in its spectral properties from the first conversion light. The primary light unit, the element, and the coupling element are arranged such that in operation, the excitation light part is supplied to the phosphor element via the coupling element, wherein simultaneously a useful light part of the primary light is also supplied, guided via the coupling element, conversion-free to an illumination application.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: September 20, 2016
    Assignee: OSRAM GMBH
    Inventor: Juergen Mueller
  • Patent number: 9360608
    Abstract: Provided is a polarizing element having excellent optical properties and high light resistance to intense light. This polarizing element is provided with a transparent substrate, an absorbing layer disposed on the transparent substrate and constituting grid-shaped convexities arrayed at a pitch smaller than the wavelengths in the optical bandwidth used, a dielectric layer formed on the absorbing layer, and a reflective layer formed on the dielectric layer. Because the absorbing layer, which interferes with and absorbs light, is in contact with the transparent substrate, heat dissipation can be improved and heat resistance of the polarizing plate can be improved.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: June 7, 2016
    Assignee: DEXERIALS CORPORATION
    Inventors: Eiji Takahashi, Akio Takada
  • Patent number: 9323048
    Abstract: In an optical deflector including a mirror, a fixed frame surrounding the mirror, and first and second piezoelectric actuators of a meander-type provided opposite to each other with respect to the mirror, for rocking the mirror around an axis on a plane of the fixed frame, the first piezoelectric actuator includes a plurality of first piezoelectric cantilevers folded at first folded portions and coupled to the fixed frame, and the second piezoelectric actuator includes a plurality of second piezoelectric cantilevers folded at second folded portions and coupled to the fixed frame. The optical deflector further includes at least one first crossing bar coupled between one of the first folded portions and one of the second folded portions symmetrically located with respect to the mirror.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: April 26, 2016
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Masanao Tani
  • Patent number: 9217913
    Abstract: A projection system (900) includes a scanner (802) and light source (801). The scanner (802) is configured to crate a scan cone (994) for forming images (995). A principal beam (992) defines a traveling direction of the scan cone (994). An optical device (880) having decentered, free-form major faces is disposed at an output of the projection system (900) such that the scan cone (994) passes through the optical device (880). The optical device (880) is configured to redirect the principal beam (992), and accordingly the traveling direction of the scan cone (994), by a predetermined amount and to correct both anamorphic distortion and vertical smile distortion initially present in the image.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: December 22, 2015
    Assignee: Microvision, Inc.
    Inventor: Joshua M. Hudman
  • Patent number: 9213226
    Abstract: An optical display system includes a projection system for outputting images having an image refresh frequency and a two-dimensional screen for receiving the images. The screen is coupled to a motion unit which allows a motion of the screen at a frequency which is equal to the refresh frequency of the images.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: December 15, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Francesco M. De Collibus, Luca Landi, Claudio Predenzi
  • Patent number: 9176368
    Abstract: An optical system for a projector is provided, which includes a solid-state light source module, an optical module, a phosphor element and a light relay module which are disposed sequentially. The light source module can generate a first beam, while the optical module can relay and uniformize the first beam so that the first beam is uniformly incident on the phosphor element. The optical module also makes the light spot of the first beam incident on the phosphor element into a predetermined shape and area, so that the phosphor element will emit a second beam by an emitting area. The light relay module can receive a part of the second beam, and the part of the second beam has a solid angle. An Etendue defined by the solid angle and the emitting area may be identical to the Etendue of a light modulator of the projector.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: November 3, 2015
    Assignee: DELTA ELECTRONICS, INC.
    Inventor: Bor Wang
  • Patent number: 9170475
    Abstract: A method and system are presented directed to a light valve projector with a laser-phosphor light converter. The phosphor converter converts excitation light in order to provide light to a light valve projector. The phosphor converter reduces the étendue of laser-phosphor light sources using a light pipe integrator system. The light pipe integrator system includes a light pipe integrator configured to mix the excitation light and reduce the spot size of excitation light entering the system from, e.g., a laser array. The excitation light is imaged onto a phosphor as it exits the light pipe integrator. The phosphor emits fluorescent light, in response to being illuminated by the excitation light, that enters the light pipe integrator. The light pipe integrator reduces the emission angles of the fluorescent light while maintaining the étendue of the fluorescent light. The system and method may include a reflective polarizer to polarize the fluorescent light.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: October 27, 2015
    Assignee: Barco N.V.
    Inventors: Dirk L. A. Maes, Rik Defever, Bart Henri Johanna Maximus
  • Patent number: 9140971
    Abstract: A scanning laser projector detects obstructions in a projector field of view using a proximity detector that detects infrared light at a photodetector. The photodetector is tested with an additional infrared light source. The additional infrared light source may also be used as proximity detector that can detect a local obstruction blocking the photodetector.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: September 22, 2015
    Assignee: Microvision, Inc.
    Inventors: Scott Woltman, Robert James Jackson
  • Patent number: 9091410
    Abstract: Disclosed are a backlight unit and a display using the same. The backlight unit includes a first reflector, a second reflector, and at least one light source disposed between the first reflector and the second reflector, and the end of the second reflector is separated from the at least one light source by a first distance in the upward direction of the at least one light source.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: July 28, 2015
    Assignee: LG Innotek Co., Ltd.
    Inventors: Duk Hyun Yun, Se Jin Ko, Sang Hyeok Jung
  • Patent number: 9079110
    Abstract: A riding toy includes a body with a spring assembly supporting the body on a base so that the body may be moved in first and second motions with respect to the base. The riding toy also includes a microcontroller and first and second motion sensors responsive to the first and second motions, respectively. The first and second motion sensors are positioned on the body and in electronic communication with the microcontroller. A sound synthesizing circuit is in electronic communication with the microcontroller and a speaker. The microcontroller is programmed to provide a first sound effect when the first motion sensor detects the first motion and a second sound effect when the second sensor detects the second motion. The first sound effect is varied based on a speed of the first motion and preempts the second sound effect if both the first and second motions are taking place simultaneously. The riding toy also includes a light sensor in electronic communication with the microprocessor.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: July 14, 2015
    Assignee: Radio Flyer Inc.
    Inventors: Emily Byrne, Thomas Schlegel, Mark Johnson, Katherine Powers
  • Patent number: 9075246
    Abstract: Techniques capable of effectively reducing local speckle noise caused by scanning with laser light involving a variation in scanning speed and improving the overall quality of an image are provided. In some examples, a laser light source emits laser light with an output level corresponding to a display grayscale of a pixel according to a predetermined waveform pattern within a pixel display period which is set to increase as a scanning speed is reduced. The waveform pattern is set such that a unique relaxation oscillation of the laser light source increases as the scanning speed is reduced. A scanning mirror reflects the laser light emitted from the laser light source in a predetermined scanning order according to its deflection angle so as to be projected onto a projection surface.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: July 7, 2015
    Assignee: Funai Electric Co., Ltd.
    Inventors: Atsuhiko Chikaoka, Kenji Nagashima
  • Patent number: 9057940
    Abstract: A projection apparatus has a light source module including a light-emitting element, an optical path switching element, a wavelength conversion element, a first reflection element, and a first beam splitter element. The optical path switching element switches a first color beam between a first optical path and a second optical path. When the first color beam is switched to the first optical path, the first color beam is propagated to the wavelength conversion element to excite a first and second wavelength conversion layers on the wavelength conversion element to produce a second color beam and a third color beam. When the first color beam is switched to the second optical path, the first color beam is propagated to the first reflection element.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: June 16, 2015
    Assignee: Coretronic Corporation
    Inventors: Ko-Shun Chen, Tzu-Yi Yang, Chia-Hao Wang
  • Patent number: 9052582
    Abstract: An illumination device includes: an excitation light source that emits excitation light having a first wavelength; a fluorescent substance that, when irradiated with the excitation light, emits light having a second wavelength longer than the first wavelength and transmits a part of the excitation light, and thereby multiplexes and emits the transmitted excitation light having the first wavelength and the emitted excitation light having the second wavelength; and a driving unit that moves an irradiation position of the excitation light in the fluorescent substance with the passage of time.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: June 9, 2015
    Assignee: Sony Corporation
    Inventor: Yoshikazu Komatsu