With Moving Color Filters Patents (Class 348/743)
  • Patent number: 10539298
    Abstract: A color wheel includes a phosphor wheel, a color correction wheel, a rotation shaft, and a metal piece fixed on the rotation shaft, and the phosphor wheel and the color correction wheel are fixed together with the metal piece, such that they both contact the metal piece and heat generated by the phosphor wheel can be quickly transmitted to the metal piece and the color correction wheel and emitted into the air to cool the phosphor wheel.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: January 21, 2020
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Jiayi Yang
  • Patent number: 10539778
    Abstract: A rotor unit includes a rotor including a substrate and a wavelength conversion region, and a driving unit. The substrate includes an outer edge and is configured such that a substrate material is continuously provided from a center to the outer edge. The wavelength conversion region is provided on the substrate and receives light having a first wavelength region and emits light having a second wavelength region different from the first wavelength region. The driving unit rotates the rotor.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: January 21, 2020
    Assignee: SONY CORPORATION
    Inventor: Takashi Takamatsu
  • Patent number: 10488744
    Abstract: A light source module and a projection apparatus are provided. The light source module includes a blue light source, a red light source, a wavelength conversion wheel and a filter wheel. The blue light source provides a blue light beam. The red light source provides a red light beam. The wavelength conversion wheel is disposed on a transmission path of the blue light beam and has a wavelength conversion region and a transparent region. The blue light beam passes through the transparent region. The blue light beam is converted into a green light beam by the wavelength conversion region, so as to generate the green light beam. The filter wheel is disposed on transmission paths of the blue light beam and the red light beam and includes a filter region and a diffusion region. A filter spectrum of the filter region includes a first bandwidth that allows the green light beam to pass through and a second bandwidth that allows a red light beam to pass through.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: November 26, 2019
    Assignee: Coretronic Corporation
    Inventors: Chien-Chung Liao, Hsuan-I Wu
  • Patent number: 10481389
    Abstract: A curved-surface apparatus for wavelength converting. The apparatus includes: a light source excitation unit comprising a plurality of light source exciters for emitting identical or different excited light, respectively; a wavelength conversion unit provided with annular structure; a plurality of component sets circularly disposed on a curved surface of the annular structure and divided into a plurality of component regions provided with predetermined color wavelength conversion substances; a beam splitter set configured to reflect the excited light emitted by the light source excitation unit and transmit predetermined light; a condenser lens set disposed near the wavelength conversion unit.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: November 19, 2019
    Assignee: IVIEW DISPLAYS (SHENZHEN) COMPANY LTD.
    Inventors: Zhiqiang Gao, Steve Yeung, Augustus Yeung, Manying Ning
  • Patent number: 10401718
    Abstract: A rotary cooling device includes a rotating device, a base connected to a cooling target and configured to be rotated by the rotating device, and a heat radiating section disposed in the base and configured to radiate heat transmitted from the cooling target via the base. The heat radiating section includes a plurality of fins extending from a rotation center side of the base to an outer circumference side of the base and arrayed along a rotating direction of the base, a plurality of first grooves formed among the plurality of fins and communicating with an outer region of the heat radiating section when viewed along a rotation axis of the base, and a plurality of second grooves crossing at least one of the plurality of first grooves to divide the plurality of fins into a plurality of fin elements.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: September 3, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Akira Egawa
  • Patent number: 10394110
    Abstract: A phosphor wheel module includes a substrate and a phosphor region disposed on a surface of the substrate. The phosphor region includes a phosphor that is disposed on at least a part of a circumference of a circle with a first radius from a rotation center of the substrate. The substrate includes a ventilation region and a heat conduction region. The ventilation region includes a plurality of openings that is located closer to the rotation center of the substrate than the phosphor region. The heat conduction region is located farther away from the rotation center of the substrate than the phosphor region.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 27, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masafumi Tanaka, Shigekazu Yamagishi, Takashi Ikeda
  • Patent number: 10349488
    Abstract: The examples relate to various implementations of a software configurable lighting device, installed as a panel, that offers the capability to appear like and emulate a variety of different lighting devices. Emulation includes the appearance of the lighting device as installed in the wall or ceiling, possibly, both when lighting and when not lighting, as well as light output distribution, e.g. direction and/or beam shape.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: July 9, 2019
    Assignee: ABL IP HOLDING LLC
    Inventors: Mark A. Black, Jack C. Rains, Jr., David P. Ramer, Rashmi Kumar Raj, An Mao, Ravi Kumar Komanduri, Hampton Boone Maher
  • Patent number: 10310363
    Abstract: A phosphor device of an illumination system emitting a first waveband light and having an optical path includes a first section and a first phosphor agent. The first phosphor agent is coated on the first section. The first waveband light is received and converted into a second waveband light by the first phosphor agent. The second waveband light is directed to the optical path. The range of the spectrum of the second waveband light includes at least a first color light and a second color light, so that the first color light or the second color light is separated from the second waveband light along the optical path. Therefore, the diversity of the design of the phosphor device is enhanced, the manufacturing cost and the size of product are reduced, and the color purity is enhanced.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: June 4, 2019
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Keh-Su Chang, Yen-I Chou, Chi Chen, Chun-Hsien Lu
  • Patent number: 10313644
    Abstract: An embodiments of the present disclosure relate to a fluorescence wheel, a projection light source, a projector and its control method. The fluorescent wheel includes a substrate having a reflecting surface; and a fluorescent layer disposed on the reflecting surface of the substrate. The fluorescent layer includes a high color gamut region and a low color gamut region.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: June 4, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Hui Dong
  • Patent number: 10284829
    Abstract: A wheel assembly includes a housing, a wheel, and a thermal conductive assembly. The wheel is disposed inside of an enclosure of the housing, and includes a first surface, a second surface, and a wavelength conversion layer formed on a coating area of the first surface and configured to convert wavelength of a light beam. The thermal conductive assembly includes a thermal conductive structure and a thermal conductive tube. The thermal conductive structure corresponds to an edge contour of the wheel and is disposed adjacent to an outer edge of the wheel. The thermal conductive tube is coupled to the thermal conductive structure and partially protrudes to an exterior of the housing for conducting heat generated by the wheel from the thermal conductive structure to the exterior of the housing. The distance between the thermal conductive structure and the outer edge of the wheel falls within 1-50 mm.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: May 7, 2019
    Assignee: Coretronic Corporation
    Inventors: Jia-Hong Dai, Te-Ying Tsai, Tsung-Ching Lin
  • Patent number: 10281805
    Abstract: An image display device includes: a light source unit that sequentially supplies light of a plurality of colors; an image formation unit that is provided with a pixel region that is made up of a plurality of pixels, light of a plurality of colors supplied by the light source unit sequentially irradiating the pixel region, and images of a plurality of colors being sequentially formed by the modulation of the incident light by each of the pixels; and a controller that controls the image-forming operation of the image formation unit. The controller causes formation of images of at least one color among the plurality of colors with pixel combinations made up of a plurality of pixels as pixel units and individually controls each pixel that make up the pixel combinations.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: May 7, 2019
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Atsushi Kato, Tomohiro Nakagawa
  • Patent number: 10281810
    Abstract: A phosphor device of an illumination system emitting a first waveband light and having an optical path includes a first section and a first phosphor agent. The first phosphor agent is coated on the first section. The first waveband light is received and converted into a second waveband light by the first phosphor agent. The second waveband light is directed to the optical path. The range of the spectrum of the second waveband light includes at least a first color light and a second color light, so that the first color light or the second color light is separated from the second waveband light along the optical path. Therefore, the diversity of the design of the phosphor device is enhanced, the manufacturing cost and the size of product are reduced, and the color purity is enhanced.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: May 7, 2019
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Bor Wang, Keh-Su Chang, Chien-Hao Hua
  • Patent number: 10230928
    Abstract: An image may be formed in a projection system by forming a light beam with substantially a first polarization. The light beam is directed onto a first color wheel that transmits a first selected color portion of the light beam and reflects a second color portion of the light beam. The reflected second color portion is converted to a second polarization. A first portion of the image is produced with a first spatial light modulator using the first selected color portion of the light beam having the first polarization. A second portion of the image is produced with a second spatial light modulator using at least a portion of the reflected second color portion of the light beam having the second polarization. The first portion of the image and the second portion of the image are combined to form a combined image for projection.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: March 12, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Alexander Lyubarsky, Gregory Scott Pettitt
  • Patent number: 10228613
    Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: March 12, 2019
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Yi Li, Liangliang Cao, Yi Yang
  • Patent number: 10203589
    Abstract: A wavelength converter includes a rotating device, a substrate rotated by the rotating device, and a wavelength conversion element and a plurality of fins provided on a first surface of the substrate, and the first surface is so provided as to face an opening of an air introduction channel through which air for cooling the wavelength conversion element is introduced.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: February 12, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Kunihiko Takagi
  • Patent number: 10165235
    Abstract: The invention provides a digital micromirror device control apparatus and a projection display system. The digital micromirror device control apparatus includes a video decoding circuit configured to decode received video data, thereby obtaining component data signals of a plurality of colors; a digital micromirror device driving circuit including a first sub-driving circuit and a second sub-driving circuit. An input end of the first sub-driving circuit is connected to the video decoding circuit, an output end of the first sub-driving circuit is connected to the first digital micromirror device, an input end of the second sub-driving circuit is connected to the video decoding circuit, and an output end of the second sub-driving circuit is connected to a second digital micromirror device. The first sub-driving circuit and the second sub-driving circuit are configured to process component data signals of at least three of the plurality of colors.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: December 25, 2018
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Yi Li, Hong Ye, Min Sun, Fuyuan Wu
  • Patent number: 10156780
    Abstract: The phosphor wheel device includes a phosphor wheel, a circulation fan, a motor and a casing unit. The phosphor wheel is disc-shaped, and includes an annular phosphor layer formed on a first face and a plurality of openings disposed on an inner circumferential side. The circulation fan is mounted to a second face opposite to the first face, and blows air through the openings to the phosphor layer side. The motor drives and rotates the phosphor wheel and the circulation fan. The casing unit accommodates the phosphor wheel, the circulation fan, and the motor, and includes a circulation path formed for an airflow generated by the circulation fan to circulate. The casing unit includes an outer cylindrical portion and an inner cylindrical portion disposed substantially concentrically inside the outer cylindrical portion. Both ends of the outer cylindrical portion communicate with both ends of the inner cylindrical portion.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: December 18, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Tsutomu Yoshikawa
  • Patent number: 10145541
    Abstract: A light converter comprises: a solid-state optical member configured to absorb light of an excitation wavelength and generate light of an emission wavelength; a base; and a mechanical fastener attaching the solid-state optical member to the base. The light converter may be part of a light engine, a phosphor wheel or an automotive headlight. A method of manufacturing such a phosphor wheel is also provided.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: December 4, 2018
    Assignee: MATERION CORPORATION
    Inventors: Louisa Yu, Jie Fan, Xianjiang Wang
  • Patent number: 10134317
    Abstract: Provided is a projection device, comprising a light-emitting apparatus, a spatial light modulator, a pixel shifting apparatus, a projection lens, and a control processor; the light-emitting apparatus comprises an excitation light source, a colored-light generating apparatus, and a drive apparatus; the control processor is separately connected to the drive apparatus, the light source, the spatial light modulator, and the pixel shifting apparatus, and is used for: controlling the frequency of periodic motion of the drive apparatus; while the drive apparatus moves the conversion area of the colored-light generating apparatus to pass across the position illuminated by the excitation light, shutting off the light source or controlling the spatial light modulator to enter a non-projecting state. No light passes through the pixel shifting apparatus when it is changing states, thus it is prevented from affecting the contrast. Also provided are a projection control system and a projection control method.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: November 20, 2018
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Yi Li, Zeqin Wang
  • Patent number: 10114277
    Abstract: A light source system and a projection system, comprising a light source; a switching system switching light emitted by the light source into at least two light beams having a preset proportion in the manner of time division or light intensity division; a color wheel assembly located in a transmission light path of each light beam of the at least two light beams, with the color wheel assembly generating light having different colors and a preset proportion under the irradiation of each light beam of the at least two light beams, and light of different colors being able to synthesize a projection image after being modulated by a light modulation system, wherein the switching system can adjust the proportion of the at least two light beams according to the parameters of the projection image, so as to adjust the proportion of the light of different colors.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: October 30, 2018
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Zuqiang Guo, Zeqin Wang
  • Patent number: 9995996
    Abstract: A cooling structure includes a phosphor unit, air-blowing systems that cause cooling air to flow, and a duct structure. The phosphor unit includes a substrate and a phosphor that is formed on the substrate and that emits fluorescent light when irradiated with excitation light. The duct structure guides the cooling air blown from the air-blowing systems to the phosphor unit.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: June 12, 2018
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Naoki Masuda
  • Patent number: 9939375
    Abstract: A gas concentration measurement device measures a gas concentration based on an absorbance of sample gas in a region between a light source that emits infrared light and a detector that detects the infrared light. The gas concentration measurement device includes a rotating member, first and second band pass filters on the rotating member, and a rotational driver. The first and second band pass filters are located on a pair of planes that intersect each other. The rotational driver rotates the rotating member around the rotating shaft to switch between a first state, in which the infrared light from the light source is transmitted through the first band pass filter, and a second state, in which the infrared light from the light source is transmitted through the second band pass filter.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: April 10, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masaaki Yasuda, Masanori Tsubono, Naoki Ogushi
  • Patent number: 9897901
    Abstract: A light source system comprises: a light-emitting device for emitting a first light and a second light in sequence; a beam splitting system with which the first light is divided into one beam in a first range of wavelength and the other beam in a second range of wavelength, respectively emitted along a first optical path and a second optical path, and also with which at least a part of the second light is emitted along the first optical path; a first spatial light modulator for modulating the beam emitted from the beam splitting system along the first optical path; a second spatial light modulator for modulating the beam emitted from the beam splitting system along the second optical path. The light source system has the advantages of high light-emitting efficiency and low cost. A projection system comprising the aforementioned light source system is also provided.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: February 20, 2018
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Fei Hu, Yi Li, Liangliang Cao, Yi Yang
  • Patent number: 9897795
    Abstract: A color wheel device is used in a projector. The color wheel device includes a housing, a color wheel, a motor, and a thermally conductive member. The housing has at least one through hole for a light beam to pass through. The color wheel is disposed in the housing and includes a substrate and a phosphor layer. The substrate has a light-receiving surface. The phosphor layer is disposed on the light-receiving surface. The light beam forms a light spot on the phosphor layer. The motor is disposed in the housing for driving the substrate to rotate. During the rotation of the substrate, the light spot forms a circular path on the phosphor layer. The thermally conductive member is disposed on the housing substantially at a location to which the circular path maps.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: February 20, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Yen-I Chou, Chi Chen, Kai-Shiang Yang, Shih-Kuo Wu
  • Patent number: 9880452
    Abstract: An image projection apparatus includes: an illumination optical system; a projection optical system assembled integrally with the illumination optical system; and a frame fixed to only one system, that has a larger weight, of the illumination optical system and the projection optical system.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: January 30, 2018
    Assignee: SONY CORPORATION
    Inventor: Ichiro Mori
  • Patent number: 9848176
    Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: December 19, 2017
    Assignee: MTT Innovation Incorporated
    Inventors: Gerwin Damberg, Eric Jan Kozak, Raveen Kumaran
  • Patent number: 9733469
    Abstract: A color wheel, comprises a hub portion, configured to act as a rotor for coupling to a motor and having a disk-shaped surface; an optically active radial portion, attached to or integrated with the hub portion and configured to optically process incident light; and a balancing adaptation to the disk-shaped surface of the hub portion, comprising one or more of: (a) a recess in the disk-shaped surface extending to an edge of the disk-shaped surface; (b) an annular groove in the disk-shaped surface having a non-uniform width and/or being non-concentric with the disk-shaped surface; (c) an annular groove in the disk-shaped surface, at least a portion of which is filled by a balancing mass part; and (d) a groove and/or a matrix of recesses in the disk-shaped surface arranged to define a portion of an annulus in shape.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: August 15, 2017
    Assignee: MATERION CORPORATION
    Inventors: Xin Liu, Irene Xu, Simon Cao
  • Patent number: 9706181
    Abstract: A projector includes a plurality of light sources; a controller which controls dimming of the plurality of light sources individually; a light modulator which synthesizes light emitted from each of the plurality of light sources to generate synthetic light, and modulates the synthetic light to generate an optical image; and a projecting optical system which projects the optical image generated by the light modulator. The plurality of light sources include a first light source and a second light source, and when the controller causes the plurality of light sources to emit dimmed light, the controller causes the first light source to emit light with supplied power greater than or equal to 50% of rated power and causes the second light source to emit light with supplied power less than 50% of the rated power or turn off.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: July 11, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERY MANAGEMENT CO., LTD.
    Inventor: Kouhei Gamada
  • Patent number: 9635327
    Abstract: A light source unit emits a plurality of basic light beams of differing colors and a supplemental light beam of the same color as any of the colors of the plurality of basic light beams. A control unit (12), on the basis of an input picture signal that is received as input, supplies a first modulating signal for modulating each basic light beam that accords with the color of each pixel of an image indicated by the input picture signal and a second modulating signal for modulating the supplemental light beam in accordance with the specific color level in each pixel that indicates the degree of similarity between the color of the pixel and, of the colors of the plurality of basic light beams, a prescribed color that differs from the color of the supplemental light beam. Modulation units (108, 109, 110) modulate and emit the basic light beams in accordance with the first modulating signal and modulate and emit the supplemental light beam in accordance with the second modulating signal.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: April 25, 2017
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Takeshi Morimoto
  • Patent number: 9544555
    Abstract: A projection-type video-image-displaying device efficiently displays an image by reducing the loss of light in the device. The device is provided with a light source radiating white light, a rod lens, a rotary color filter, a DMD, illumination optical elements, a projection lens and a control device. The rod lens collects light from the light source and emits the light. The rotary color filter selectively transmits, from the white light, light of a specific color. The DMD modulates incident light in accordance with an image signal, and the illumination optical elements form illumination light for projection onto the DMD. The projection lens projects an image formed using the DMD. The control device synchronizes the rotary color filter with the image displayed by the DMD. The DMD is disposed in a substantially conjugate relationship with the light-emitting surface on the rotary color filter.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: January 10, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Koji Hirata, Nobuyuki Kimura, Yuriko Inadachi
  • Patent number: 9503701
    Abstract: A scanning projector system includes a controller, a driver and one or more micro-mirror(s). The controller produces first, second and third pixel data in dependence on a video signal. The driver drives first, second and third light emitting elements in dependence on the first, second and third pixel data produced by the controller, to thereby emit light of first, second and third colors. The micro-mirror(s) project an image in dependence on light beams produced in dependence on the light of the first, second and third colors. To reduce color shifts due to inter-pixel interference, the controller and/or driver causes at least one timing guard band per pixel period associated with each instance of the pixel data.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: November 22, 2016
    Assignee: INTERSIL AMERICAS LLC
    Inventor: Akihiro Asada
  • Patent number: 9470886
    Abstract: Apparatus for generating blue color illumination for use in a projection system a color wheel with segments of respective different color light emitting phosphors formed over light non-transmitting portions and at least one blue color generating segment. The blue color generating segment has cyan color light emitting phosphor formed over a light non-transmitting first portion and a second portion that transmits blue laser light through the wheel. A dichroic filter directs blue laser light from a light source onto the respective segments as the color wheel rotates. The light strikes the first and second portions of the blue color generating segment to generate blue light at a color point determined by both blue laser light and phosphor emitted cyan light.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: October 18, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Terry Alan Bartlett
  • Patent number: 9417511
    Abstract: A lighting device includes a first light source which emits excitation light, a wavelength convertor which generates fluorescence containing at least a first wavelength range and a second wavelength range by excitation with the excitation light, a second light source which emits light containing a third wavelength range different from the first wavelength range and the second wavelength range, an optical path-combining element which combines an optical path for the fluorescence from the wavelength convertor and an optical path for the light from the second light source, so as to guide the combined optical paths to a single emission optical path, and a light separator disposed in the emission optical path, which obtains and emits at least the first wavelength range and the second wavelength range of the fluorescence and at least the third wavelength range of the light from the second light source.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: August 16, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tatsuya Takahashi, Kazuhiro Fujita, Issei Abe
  • Patent number: 9410678
    Abstract: An illumination apparatus includes a wavelength conversion element to convert light emitted from a light source into converted light and to emit the converted light and unconverted light, a first optical element including a first region guiding the light emitted from the light source to the wavelength conversion element and a second region preventing the unconverted light from traveling to the light source, and a second optical element to guide the converted light in a direction different from a direction of the light source while guiding the light emitted from the light source to the wavelength conversion element. The second optical element is disposed in an optical path between the first optical element and the wavelength conversion element. The light emitted from the light source is incident on the first region, and the unconverted light is incident on both the first region and second region of the first optical element.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: August 9, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhiro Inoko
  • Patent number: 9405177
    Abstract: A color wheel module and a projection apparatus are provided, wherein the color wheel module includes a color wheel, a cover and a flow detour duct. The cover shades the color wheel. The flow detour duct is communicated with the cover and has an airflow inlet and an airflow outlet. The rotating color wheel is configured to drive airflow into the flow detour duct from the airflow inlet, and cause the airflow through the color wheel and then discharged from the airflow outlet.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: August 2, 2016
    Assignee: Coretronic Corporation
    Inventors: Tung-Chou Hu, Hsin-Hui Lien, Sheng-Yu Chiu
  • Patent number: 9400574
    Abstract: An interactive touch system includes a display device, a light source device and an invisible light detecting device. The display device is adapted to provide an image beam to a display surface. The light source device includes a light-emitting element and a light-guide element. The light-guide element has a conical surface and a cylindrical curved surface facing the conical surface. The curvature center of at least partial section of the cylindrical curved surface is not located on the central axis of the conical surface. The light-emitting element is adapted to emit an invisible light beam toward the conical surface, and the invisible light beam is reflected by the conical surface and the cylindrical curved surface to be diverged and range over the display surface. When an object moves to the display surface, the invisible light beam is reflected by the object to be detected by the invisible light detecting device.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: July 26, 2016
    Assignee: Coretronic Corporation
    Inventors: Chien-Chung Liao, Yao-Shun Lin
  • Patent number: 9400416
    Abstract: An illumination light source device includes a reflection-transmission wheel provided on a light-path from an excitation light source and having a transmission region that transmits an excitation light and a reflection region reflecting the excitation light, a fluorescent wheel provided on at least one of the reflection light-path and the transmission light-path and having a fluorescent body emitting fluorescence when excited by the excitation light, and a control section turning-on the excitation light source while the boundary of the transmission region and the reflection region traverses the light-path, in order to provide an illumination light source device capable of preventing a deterioration of the fluorescent body, whereby improving a color reproducibility by use of the color mixture occurred at the boundary region between the transmission light-path and the reflection light-path effectively and improving the brightness of image.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: July 26, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tatsuya Takahashi, Kazuhiro Fujita, Toshiharu Murai, Ikuo Maeda, Takehiro Nishimori
  • Patent number: 9323045
    Abstract: An illumination device includes: a light source device adapted to emit an excitation light beam; and a rotating fluorescent plate having a single fluorescent layer adapted to convert a part or whole of the excitation light beam into a fluorescent light beam. The fluorescent light beam includes two or more colored light beams, and the single fluorescent layer is formed on a circular disk, which can be rotated by a motor, continuously along a circumferential direction of the circular disk.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: April 26, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hidefumi Sakata, Shunji Kamijima, Akira Miyamae, Shuji Narimatsu
  • Patent number: 9288469
    Abstract: A digital broadcast receiving apparatus for providing an integrated service of a 2D image and a 3D image. The apparatus comprising a demultiplexing unit configured to demultiplex a received digital broadcast signal; a PSIP or PSI/SI processor configured to extract at least any one of 3D service information related to a 2D image channel or service and 2D service information related to a 3D image channel or service from the demultiplexed digital broadcast signal; a decoder configured to decode an extension view video stream and a base view video stream from the demultiplexed digital broadcast signal; and an output formatting unit configured to format the extension view video stream and the base view video stream based on at least any one of the 3D service information and the 2D service information.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: March 15, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Jongyeul Suh, Jinpil Kim, Jaehyung Song, Hotaek Hong, Joonhui Lee
  • Patent number: 9228720
    Abstract: An illumination apparatus includes a wavelength conversion element to convert light emitted from a light source into converted light and to emit the converted light and unconverted light, a first optical element including a first region guiding the light emitted from the light source to the wavelength conversion element and a second region preventing the unconverted light from traveling to the light source, and a second optical element to guide the converted light in a direction different from a direction of the light source while guiding the light emitted from the light source to the wavelength conversion element. The second optical element is disposed in an optical path between the first optical element and the wavelength conversion element. The light emitted from the light source is incident on the first region, and the unconverted light is incident on both the first region and second region of the first optical element.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 5, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazuhiro Inoko
  • Patent number: 9182603
    Abstract: A projector includes a light source that emits light containing first wavelength light and second wavelength light of which light intensity is lower than that of the first wavelength light when the light source is driven at predetermined electric power, a light separation unit that separates the light from the light source into the first and the second wavelength light, an image formation unit that modulates the first wavelength light in accordance with a first image and modulates the second wavelength light in accordance with a second image, a control unit that supplies the light source with first electric power when the first image is formed, whereas supplying the light source with second electric power that is higher than the first electric power when the second image is formed, and a projection unit that projects the first image and the second image.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: November 10, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takashi Endo
  • Patent number: 9183775
    Abstract: A normal video data acquisition section acquires, as normal video data, a plurality of pieces of video data respectively assigned to a plurality of light sources in normal display from an input video signal A computing section performs a predetermined computation on the plurality of pieces of video data included in the normal video data to generate auxiliary video data used in place of the normal video data in auxiliary display. A selection section performs, in accordance with an instruction from a control section, a selection process for providing any one of the normal video data and the auxiliary video data to a modulation driving section.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: November 10, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Haruhisa Inoue
  • Patent number: 9154754
    Abstract: A projector including a first light source, a second light source that emits light having a color different from the first light source, a light modulator that modulates the light emitted from each of the first and the second light sources, and a controller that controls a first operation state in which the first and the second light sources are driven based on time division driving to perform image display and a second operation state in which the first and the second light sources are driven based on time division driving to perform illumination, wherein in the second operation state, a switching frequency at which the first and the second light sources are switched from one to the other is higher than a switching frequency at which the first and the second light sources are switched from one to the other in the first operation state.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: October 6, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Shuji Narimatsu, Hidehito Iisaka
  • Patent number: 9125262
    Abstract: A circuit configuration for operating at least one LED, comprising: an input with a first input terminal (E1) and a second input terminal (E2) for coupling to a DC voltage supply (UG); an output having a first output terminal (A1) and a second output terminal (A2) for providing an output current (IA) to the at least one LED; a micromirror arrangement (12) comprising a plurality of micromirrors; a first control device (16) configured for providing, at the output thereof, a first control signal (Sa) for the micromirror arrangement (12), the first control signal (Sa) being synchronized to a first clock frequency (fc11); a switching regulator (10), the input thereof being coupled to the first input terminal (E1) and the second input terminal (E2), and the output thereof being coupled to the first output terminal (A1) and the second output terminal (A2), the switching regulator (10) comprising a switch (S1); and a second control device (18) configured for providing, at the output thereof, a second control signal (
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: September 1, 2015
    Assignee: OSRAM GmbH
    Inventor: Josef Osterried
  • Patent number: 8955975
    Abstract: A method is provided that includes providing a light source having a light emitting diode (LED) that emits a light. A polarization conversion system (PCS) is located adjacent the LED and has both a linear polarizer and a wave plate. A polarizing beam splitter (PBS) is adjacent the light source and an imaging device is adjacent the PBS. The wave plate of the PCS is rotated to a first position, and a first light is emitted by the LED in the first light source. This first light is converted to circular polarization. This first light travels to the PBS where it is reflected onto the imaging device. The wave plate is then rotated to a second position, and a second light is emitted by the light source. This second light is converted to circular polarization and reflects from the PBS onto the imaging device.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: February 17, 2015
    Assignee: International Business Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Patent number: 8801192
    Abstract: A light source module and a projector using the same are provided. The light source module includes a monochromatic light source emitting a monochromatic light, a rotating wheel having a light transmitting area and a wavelength transforming area, a filter wheel rotating at a same rotation speed with the rotating wheel, and a dichroic mirror disposed between the rotating wheel and the filter wheel. The wavelength transforming area is coated with a first wavelength transforming material capable of transforming the first color light into a second color light. The filter wheel has a first color filter area and a second color filter area respectively corresponding to the light transmitting area and the wavelength transforming area. The dichroic mirror reflects the first color light to the rotating wheel and allows the second color light to transmit therethrough.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: August 12, 2014
    Assignee: BenQ Corporation
    Inventors: Hsiu-Tsu Wang, Yung-Yu Chiang
  • Patent number: 8733944
    Abstract: An illumination system and a projection apparatus are provided. The projection apparatus comprises the illumination system and an imaging system for forming an image. The illumination system comprises a plurality of light source modules, a first wavelength transformer, an optical apparatus and a first angle selective film. The light source modules are used for generating a plurality of light beams. The first wavelength transformer is disposed at a predetermined position. The optical apparatus is disposed between the light source modules and the first wavelength transformer for focusing the light beams to the predetermined position. The first angle selective film is disposed on the first wavelength transformer. The first wavelength transformer is disposed between the first angle selective film and the optical apparatus. The first angle selective film is used for angle-selectively filtering the light beams passing through the first wavelength transformer.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: May 27, 2014
    Assignee: Delta Electronics, Inc.
    Inventor: June-Jei Huang
  • Patent number: 8698856
    Abstract: Embodiments of the invention include a method, device and/or system for spoke recovery, including by receiving input pixel data comprising a plurality of input sub-pixel data components representing respective sub-pixel colors, adjusting input sub-pixel data components based on a value of the sub-pixel data component and at least a value of a second input sub-pixel data component in the input pixel data, thereby to produce modified pixel data, and controlling a spatial light modulator based on the modified pixel data, thereby producing a color image based on said modified pixel data. A system and device are disclosed to perform the method.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: April 15, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Shmuel Roth, Moshe Ben-Chorin
  • Patent number: 8690343
    Abstract: A light source device includes: first and second solid-state light source units disposed opposite to each other, each unit including solid-state light sources; a reflection unit; a condensing part; and a fluorescence emission plate excited with a condensed light beam. The light sources in each of the units are arranged two-dimensionally with the optical axes oriented in an x-axis direction. Each column of the light sources of the first and the second light source units are arranged alternately in the y-axis direction. The reflection unit reflects the light beams from the light source units in the z-axis direction so as to be arranged into a two-dimensional array in a xy plane. A density of the reflected light beams in the x-axis direction is higher than that of the arrangement of the light sources in the z-axis direction. Light from solid-state light sources are condensed and combined efficiently, with a compact configuration.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: April 8, 2014
    Assignee: Panasonic Corporation
    Inventor: Takaaki Tanaka
  • Patent number: RE45210
    Abstract: A projection device comprises a color wheel module, wherein, the color wheel can be detached from the color wheel module. The color wheel module can be detached from the body of the projection device, so that users can conveniently change, clean or maintain the color wheel as desired.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: October 28, 2014
    Assignee: Delta Electronics, Inc.
    Inventors: Mao-Shan Hsu, Yu-Hsi Wu