Multicolor Picture Patents (Class 353/31)
  • Publication number: 20130127716
    Abstract: A projector capable of detecting the coordinates of a detection object at a height position away from a projection area to some extent is provided. This projector (100) includes a laser beam generation portion (61a, 62a, 63a, 64a) emitting a laser beam, a projection portion (69a, 69b) projecting an image on an arbitrary projection area, and a height detection portion (10a, 10b, 12) detecting the height of the detection object from the projection area with light reflected by the detection object.
    Type: Application
    Filed: July 14, 2011
    Publication date: May 23, 2013
    Applicant: FUNAI ELECTRIC CO., LTD.
    Inventor: Kenji Nagashima
  • Publication number: 20130127717
    Abstract: A projector capable of detecting the position of a detection object while suppressing complication of the structure is provided. This projector is so configured that the optical axes of a laser beam of visible light emitted from a first laser beam generation portion and a laser beam of invisible light emitted from a second laser beam generation portion substantially coincide with each other.
    Type: Application
    Filed: July 14, 2011
    Publication date: May 23, 2013
    Applicant: FUNAI ELECTRIC CO., LTD.
    Inventor: Kenji Nagashima
  • Publication number: 20130128232
    Abstract: In accordance with the invention, a display apparatus comprising a light source is provided, said light source comprising at least one superluminescent light emitting diode (SLED), the apparatus further comprising at least one light modulating device arranged in a beam path of a light beam emitted by said light source and operable to emit influenced light upon incidence of said light beam, the light modulating device being operatively connected to an electronic control, the display apparatus further comprising a projection optics arranged in a beam path of said influenced light.
    Type: Application
    Filed: January 11, 2013
    Publication date: May 23, 2013
    Applicant: EXALOS AG
    Inventor: EXALOS AG
  • Patent number: 8444273
    Abstract: A light source device includes a first light source configured to emit light in a first wavelength band, a light-source light generation section configured to generate light of each of a plurality of colors by time division by using the first light source, a second light source configured to generate light of a second wavelength band different from the first wavelength band, and a light source control section. The light source control section is configured to cause each of the light-source light generation section and the second light source to generate light in one period, and to control a drive timing of each of the first and second light sources to adjust a light-emission timing and a light-emission period of light generated by each of the light-source light generation section and the second light source.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: May 21, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventor: Mamoru Shibasaki
  • Patent number: 8444272
    Abstract: An apparatus for forming a color image has at least a first, a second, and a third illumination source, each illumination source energizable to provide continuous illumination of a first, a second, or a third wavelength band, respectively, to an optical multiplexer. The optical multiplexer is actuable to cyclically switch received light from each one of the illumination sources, in turn, to each one of at least a first, a second, and a third projector channel in a repeated sequence. The first projector channel connects to a first projector apparatus, the second projector channel connects to a second projector apparatus, and the third projector channel connects to a third projector apparatus. Each projector apparatus has a light modulator that is energizable to form an image from the light of the first, second, or third wavelength band that is cyclically switched onto its projector channel from the optical multiplexer.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: May 21, 2013
    Assignee: Corning Incorporated
    Inventor: Joshua Monroe Cobb
  • Patent number: 8444276
    Abstract: A light source device includes: a light source section which comprises plural laser diodes; a pulse driving section which divides the laser diodes of the light source section into plural groups, each group having the same number of the laser diodes, and drives the laser diodes of the each group by a pulse having a predetermined period and a predetermined duty ratio; and a light source driving section which controls a phase of the pulse for the each group so that the same number of the laser diodes are emitted in succession when the laser diodes of the each group are driven by the pulse driving section.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: May 21, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventor: Mamoru Shibasaki
  • Publication number: 20130114044
    Abstract: A light source device includes: a light emitting plate that has a plurality of segment regions including a transmissive portion that transmits light and a reflective portion on which a fluorescent substance layer; a light source that irradiates the fluorescent substance layer of the light emitting plate with the excitation light; a dichroic mirror that is disposed between the light source and the light emitting plate to transmit the excitation light and reflect fluorescent light from fluorescent substances of the fluorescent substance layer; and an optical device that condenses the excitation light transmitted by the transmissive portion of the light emitting plate and the fluorescent light reflected by the dichroic mirror on a single optical path to form a condensed light and radiate the condensed light toward the same direction.
    Type: Application
    Filed: December 26, 2012
    Publication date: May 9, 2013
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Casio Computer Co., Ltd.
  • Patent number: 8434873
    Abstract: An interactive projection device includes a light source configured to emit an input light beam, wherein the light source comprises a visible light emitting device; a first beam splitter configured to split the input light beam into first and second split light beams; a second beam splitter configured to split a scattered light beam received from a surface into third and fourth split light beams; an image forming device configured to produce an image light beam based on the first split light beam and emit the image light beam onto the surface through the first and second splitters, thereby generating a projection image on the surface; and a detector configured to detect the invisible light of the third split light beam, thereby acquiring a scattering image from the surface.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: May 7, 2013
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Yaojun Feng, Weiping Tang, Ying Liu
  • Publication number: 20130107225
    Abstract: A light source unit and a projector including the light source unit are provided. The light source unit includes a luminous wheel having a segment area on which a luminescent material layer is formed which emits light of a predetermined wavelength band by receiving light, and a segment area which is made into a transmission portion which transmits light, a primary light source which shines light of a visible wavelength band onto the luminous wheel, a secondary light source which emits light of a wavelength band which is different from light from the luminescent material layer and light from the primary light source, a collective optical system which collects light from the luminous wheel and the secondary light source to cause them to converge to a same optical path, and a light source control device which controls the emission of light from the light sources.
    Type: Application
    Filed: December 5, 2012
    Publication date: May 2, 2013
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Casio Computer Co., Ltd.
  • Publication number: 20130107226
    Abstract: The invention provides a projection system (100) comprising a projection light source (110) and a color wheel (120), wherein the projection light source (110) comprises a solid state light source (115), configured to generate a solid state light source beam (111) having a solid state light source beam cross-section. Upstream of the color wheel (120) beam shaping optics (161) are arranged, configured to shape the solid state light source beam cross-section into a rectangular cross-section. The color wheel (120) comprises regions (125) of different luminescent material (170), excitable by the solid state light source beam (111) and configured to generate, upon excitation by the solid state light source beam (111), visible light (116) for projection on an image panel (290). The regions (125) are arranged at different distances from an axis of rotation (122) of the color wheel (120).
    Type: Application
    Filed: June 27, 2011
    Publication date: May 2, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Yuri Aksenov
  • Publication number: 20130107222
    Abstract: A projector includes a projection lens set, a digital micro-mirror device, a prism unit, a light merging unit, a light guide unit, and a light source device. The light source device includes a laser light source and a color wheel. The laser light source is positioned in a straight optical path and generates a first light. The color wheel is positioned in the straight optical path. The first light irradiates the color wheel to generate a second light and the third light. The light merging unit merges the first, second, and third lights to generate a mixed light. The light guide unit guides the mixed light to the prism unit. The mixed light is refracted to the DMD via the prism unit, and then the refracted mixed light is reflected to the projection lens set via the DMD.
    Type: Application
    Filed: May 16, 2012
    Publication date: May 2, 2013
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Chien-Wen HSU, Wen-Pin YEH
  • Publication number: 20130107223
    Abstract: A projector is provided which can secure long-term reliability and enable high-speed start-up through suppression of local heat generation of phosphor. The projector includes a light source device including an excitation light source emitting excitation light, a phosphor disk on which a phosphor that converts the excitation light into fluorescence is continuously formed in a circumferential direction of the phosphor disk, a motor unit rotating the phosphor disk in the circumferential direction, a light modulation device generating an image light through modulation of light including the fluorescence, and a projection optical system projecting the image light. If the number of rotations of the phosphor disk reaches a predetermined number that is smaller than a target number, the excitation light source is turned on, while if the number of rotations of the phosphor disk is increased after reaching the predetermined number, an output of the excitation light source is increased.
    Type: Application
    Filed: September 7, 2012
    Publication date: May 2, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takashi TOYOOKA
  • Publication number: 20130107221
    Abstract: A light emitting module and a display device comprising the light emitting module are provided. The light emitting module comprises an excitation light source, a phosphor wheel and a driving circuit. The excitation light source is configured to generate an excitation light. The phosphor wheel has a plurality of color segments and rotates at a period so that each of the color segments sequentially receives the excitation light to generate a color light. The driving circuit is electrically connected to the excitation light source and the phosphor wheel. The driving circuit is configured to provide a driving current to the excitation light source, and changes the driving current in accordance with each of the color segments receiving the excitation light so as to adjust an energy conversion efficiency of each of the color segments for generating the color light.
    Type: Application
    Filed: February 14, 2012
    Publication date: May 2, 2013
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chi-Hsuan HSU, Yao-Hsien HUANG
  • Publication number: 20130107224
    Abstract: A beam light source of an image display device which displays an image on a screen by scanning an optical beam in a two-dimensional direction in which the beam light source includes a light source that emits a diffuse light modulated according to an image signal, and an optical element that shapes the light emitted from the light source to the optical beam. The optical beam has an elliptically shaped beam spot on the screen in which a major axis of the beam spot is substantially perpendicular to a scanning direction. A horizontal spot size of the optical beam on an exit surface of the optical element is at least or equal to a horizontal spot size of the optical beam on the screen, and the horizontal spot size of the optical beam on the screen is no greater than a horizontal pixel pitch displayed on the screen.
    Type: Application
    Filed: November 9, 2012
    Publication date: May 2, 2013
    Inventors: Mayumi Nagayoshi, Satoshi Ouchi, Tadayoshi Kosaka, Tomoki Kobori, Yoshiho Seo
  • Patent number: 8430513
    Abstract: A projection system comprises an image input element and an optical imaging element. The image input element is configured to input an original image or a processed image. The optical imaging element, an optical system with axisymmetrical structure and specific spherical aberration, is configured to generate an image with extended depth of field on an image projection surface in accordance with the original image or the processed image.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: April 30, 2013
    Assignee: Industrial Technology Research Institute
    Inventors: Chuan Chung Chang, Hsin Yueh Sung, Chir Weei Chang
  • Patent number: 8430514
    Abstract: In order to produce stress-reduced reflective optical elements (1) for an operating wave length in the soft X-ray and extreme ultraviolet wavelength range, in particular for use in EUV lithography, it is proposed to apply, between substrate (2) and a multilayer system (4) optimized for high reflectivity at the operating wavelength, a stress-reducing multilayer system (6) with the aid of particle-forming particles having an energy of 40 eV or more, preferably 90 eV or more. Resulting reflective optical elements are distinguished by low surface roughness, a low number of periods in the stress-reducing multilayer system and also high values of the stress-reducing multilayer system.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: April 30, 2013
    Assignee: Carl Zeiss SMT GmbH
    Inventor: Gisela Von Blanckenhagen
  • Patent number: 8432436
    Abstract: An interactive, autostereoscopic system for displaying an object in 3D includes a mirror configured to spin around a vertical axis when actuated by a motor, a high speed video projector, and a processing system including a graphics card interfaced to the video projector. An anisotropic reflector is bonded onto an inclined surface of the mirror. The video projector projects video signals of the object from the projector onto the inclined surface of the mirror while the mirror is spinning, so that light rays representing the video signals are redirected toward a field of view of a 360 degree range. The processing system renders the redirected light rays so as to interactively generate a horizontal-parallax 3D display of the object. Vertical parallax can be included in the display by adjusting vertically the displayed views of the object, in response to tracking of viewer motion by a tracking system.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: April 30, 2013
    Assignee: University of Southern California
    Inventors: Paul E. Debevec, Andrew Jones, Mark Bolas, Ian McDowall
  • Publication number: 20130100419
    Abstract: A projector for projecting light forming an image on an external screen to outside of the projector includes a display panel provided with a plurality of pixel elements, and configured to form an image by controlling the pixel elements according to a driving signal, an illumination optical system provided with an equalization lens and a mirror arranged on a first optical axis, and configured to output light penetrating the equalization lens to the display panel through the mirror, and a projection optical system provided with at least one lens arranged on a second optical axis, and configured to output light reflected from the display panel to the outside, wherein an alignment axis of the equalization lens forms an angle of inclination with the second optical axis.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Samsung Electronics Co., Ltd.
  • Publication number: 20130100420
    Abstract: A projection light source has a source of laser light of a first color. A first member has first and second phosphor material segments respectively configured to emit light of second and third colors when illuminated by the laser light of the first color. A second member has first and second dichroic filter segments respectively configured to pass the light of the second and third colors emitted by the first and second phosphor material segments, while blocking light of the others of the first, second and third colors.
    Type: Application
    Filed: October 25, 2012
    Publication date: April 25, 2013
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventor: TEXAS INSTRUMENTS INCORPORATED
  • Publication number: 20130100417
    Abstract: An illumination system includes a coherent light source, a phosphor switching module, a beam combining unit and a diffusion switching module. The coherent light source emits a coherent light beam. The phosphor switching module includes a light passing section and a first phosphor reflecting section. The light passing section and first phosphor reflecting section are switched into a transmission path of the coherent light beam by turns. The first phosphor reflecting section converts and reflects the coherent light beam into a first color beam. The beam combining unit combines the coherent light beam passing through the light passing section and the first color light beam. The diffusion switching module includes a light diffusion section and a first light permeable section to be switched into the transmission paths of the coherent light beam and the first color light beam by turns. A projection apparatus is also disclosed.
    Type: Application
    Filed: July 16, 2012
    Publication date: April 25, 2013
    Applicant: CORETRONIC CORPORATION
    Inventors: Tzu-Yi Yang, Chi-Hsun Wang, Ko-Shun Chen
  • Publication number: 20130100418
    Abstract: A projection display device includes a projection part which enlarges and projects the light flux modulated by an imager onto a projection plane; an opening which is formed in a main body cabinet and through which the light flux outputted from the projection part is passed; and a cover which is mounted in the opening and through which the light flux is transmitted. A light incident surface of the cover has such a curved shape as to set an incident angle of each principal ray transmitted through the cover small, as compared with an arrangement, in which the light incident surface has a flat shape. A light output surface of the cover has such a curved shape as to set an output angle of each principal ray transmitted through the cover small, as compared with an arrangement, in which the light output surface has a flat shape.
    Type: Application
    Filed: October 15, 2012
    Publication date: April 25, 2013
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Sanyo Electric Co., Ltd.
  • Patent number: 8427731
    Abstract: In accordance with the invention, a display apparatus comprising a light source is provided, said light source comprising at least one superluminescent light emitting diode (SLED), the apparatus further comprising at least one light modulating device arranged in a beam path of a light beam emitted by said light source and operable to emit influenced light upon incidence of said light beam, the light modulating device being operatively connected to an electronic control, the display apparatus further comprising a projection optics arranged in a beam path of said influenced light.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: April 23, 2013
    Assignee: Exalos AG
    Inventors: Valerio Laino, Lorenzo Occhi, Christian Velez
  • Patent number: 8425041
    Abstract: Proposed are various embodiments of projection systems that generally provide stereoscopic images. The projection systems act to split a spatially separated image in a stereoscopic image frame and superimpose the left- and right-eye images on a projection screen with orthogonal polarization states. The embodiments are generally well suited to liquid crystal polarization based projection systems and may use advanced polarization control.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: April 23, 2013
    Assignee: RealD Inc.
    Inventors: Miller H. Schuck, Michael G. Robinson, Douglas J. McKnight, Gary D. Sharp
  • Patent number: 8425042
    Abstract: A multi-segment optical retarder that can be used with or within a single projector for creating 3D images. The multi-segment optical retarder is coupled to an actuator used to effect some predetermined linear, rotary, or oscillating movement of the multi-segment optical retarder such that a fast axis orientation of each segment is substantially constant relative to itself over time and for a given area of incidence.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: April 23, 2013
    Assignee: JDS Uniphase Corporation
    Inventors: Curtis R. Hruska, David M. Shemo, Kim Leong Tan
  • Patent number: 8425056
    Abstract: An image display apparatus includes: a light source unit which emits axially symmetric polarized light having polarization distribution symmetric with respect to the center axis of light; and a scanning unit which applies the axially symmetric polarized light to a projection surface for scanning to form an image.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: April 23, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Fumika Sumiyama
  • Patent number: 8427590
    Abstract: The present invention is directed to display technologies. More specifically, various embodiments of the present invention provide projection display systems where one or more laser diodes are used as light source for illustrating images. In one set of embodiments, the present invention provides projector systems that utilize blue and/or green laser fabricated using gallium nitride containing material. In another set of embodiments, the present invention provides projection systems having digital lighting processing engines illuminated by blue and/or green laser devices. In one embodiment, the present invention provides a 3D display system. There are other embodiments as well.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: April 23, 2013
    Assignee: Soraa, Inc.
    Inventors: James W. Raring, Paul Rudy
  • Patent number: 8425043
    Abstract: A projector includes: a first optical device, and a first color combining optical device; a second optical device, and a second color combining optical device; a combining optical device adapted to combine emission light emitted respectively from the first optical device and the second optical device; a first polarization conversion device disposed between the first optical device and the combining optical device, and adapted to align a polarization direction of the emission light from the first optical device into a first polarization direction; and a second polarization conversion device disposed between the second optical device and the combining optical device, and adapted to align a polarization direction of the emission light from the second optical device into a second polarization direction.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: April 23, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Yasunaga Miyazawa
  • Publication number: 20130094001
    Abstract: In a projector, a controller sets a start timing and an end timing of a color transitional period which includes the color switch timing in a center of the color transitional period, and sets one of the start timing and the end timing to coincide with a light source switch timing at which the color of the light emitted by the light source unit switches. A projection drive unit controls the display drive of the display element based on the start timing and the end timing.
    Type: Application
    Filed: October 15, 2012
    Publication date: April 18, 2013
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: CASIO COMPUTER CO., LTD.
  • Patent number: 8419193
    Abstract: A projection apparatus including an illumination unit, a brightness detection circuit, a signal conversion circuit, and a control unit is provided. The illumination unit generates a light source according to a plurality of driving signals and provides a temperature sensing signal according to the temperature of the light source. The brightness detection circuit generates a plurality of brightness sensing signals. The signal conversion circuit converts the temperature sensing signal and the brightness sensing signals into temperature information and a plurality of brightness information. The control unit comprises a setting table for storing a predetermined temperature information and a plurality of predetermined brightness information, and the control unit adjusts the driving signals in order to identify the converted temperature information and the converted brightness information conform to the stored information in the setting table.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: April 16, 2013
    Assignee: Himax Display, Inc.
    Inventors: Chia-Chun Kuo, Chia-Cheng Lai, Chih-Hung Yang, Ming-Cheng Chiu
  • Patent number: 8419188
    Abstract: A wavelength combining apparatus includes first and second optical devices. The first optical device collects and collimates or focuses light from multiple laser light sources. The second optical device includes multiple nonparallel dichroic surfaces to combine light received from the first optical device.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: April 16, 2013
    Assignee: Microvision, Inc.
    Inventors: Robert A. Sprowl, Joshua M. Hudman, Joshua O. Miller
  • Patent number: 8419194
    Abstract: A locally dimmed display has a spatial light modulator illuminated by a light source. The spatial light modulator is illuminated with a low resolution version of a desired image. The illumination may comprise a series of lighting elements that vary smoothly from one element to another at the spatial light modulator.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: April 16, 2013
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Lorne A. Whitehead, Gregory John Ward, Wolfgang Stuerzlinger, Helge Seetzen
  • Patent number: 8419195
    Abstract: This projector includes a laser beam emitting portion emitting a laser beam and a projecting portion projecting an image on an arbitrary projection region by scanning the projection region with the laser beam. This projector further includes a control portion controlling the laser beam emitting portion not to emit the laser beam by stopping supplying current to the laser beam emitting portion in a previously set partial scanning section within a scanning section for the laser beam.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: April 16, 2013
    Assignee: Funai Electric Co., Ltd.
    Inventors: Hiroshi Nishigaki, Atsuya Hirano, Atsuhiko Chikaoka, Ken Nishioka
  • Patent number: 8419189
    Abstract: Methods and systems for an emissive fiber capable of being used for making emissive fabric by providing an optical fiber having a core and and embedding up conversion particles into at least one of the cladding and core to produce an emissive fiber that emits visible light when excited by light from near infrared light source that excites the up conversion particles. The optical fiber can have a core index of refraction that is greater than or less than the refractive index of the cladding for near infrared light or an index difference between the core and cladding of zero. Plural optical fibers are intertwined to produce an emissive fabric, wherein coupling a light source with the emissive fibers transmits a light beam through the fiber to excite the up conversion particles to emit visible light. The up conversion material can be embedded into the core, the cladding, or both.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: April 16, 2013
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Dennis G. Deppe, Michael Bass
  • Publication number: 20130088690
    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: Application
    Filed: July 17, 2012
    Publication date: April 11, 2013
    Applicant: BENQ CORPORATION
    Inventors: Hsiu-Tsu Wang, Yung-Yu Chiang
  • Publication number: 20130088689
    Abstract: A light source module including a first light-emitting device, a light emitting wheel, a second light-emitting device, and a light combination device is provided. The first light-emitting device provides an exciting beam. The light emitting wheel is disposed on a transmission path of the exciting beam and has a first light conversion area. The exciting beam obliquely irradiates on the first light conversion area and is converted into a first color beam. The second light-emitting device provides a second color beam. Herein, colors of the first color beam and the second color beam are different. The light combination device is disposed on the transmission paths of the first color beam and the second color beam. The first color beam is reflected to the light combination device by the light emitting wheel and the light combination device combines the first color beam and the second color beam.
    Type: Application
    Filed: October 7, 2011
    Publication date: April 11, 2013
    Applicant: YOUNG OPTICS INC.
    Inventors: Hsin-Hung Lin, Yu-Yun Chang, Hung-Chih Chou, Haw-Woei Pan, Chao-Shun Chen
  • Patent number: 8414134
    Abstract: An illumination apparatus includes first and second light source units. An optical axis converting element has a first surface that reflects a luminous flux emitted from the first light source unit and a second surface that reflects a luminous flux emitted from the second light source unit and is configured to reflect respective luminous fluxes emitted from the respective light source units in substantially one direction. Each of the luminous fluxes entering the optical axis converting element has different dimensions in two directions orthogonal to each other in a plane orthogonal to an emission axis of the each light source unit. The optical axis converting element is arranged such that a cross-sectional shape of the luminous flux entering each optical axis converting element taken along the surface has a short side direction in the same direction as the direction of arrangement of the first and second surfaces.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: April 9, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Yoshitaka Itoh
  • Publication number: 20130083295
    Abstract: A light source unit includes a red light source, a first blue-light source, a fluorescent material, a second blue-light source and an optical system. The red light source emits light in a red wavelength range. The first, blue-light source emits light in a first blue-wavelength range. The fluorescent material receives the light in the first blue-wavelength range and emits light in a green wavelength range. The second blue-light source emits light in a second blue-wavelength range whose wavelengths are longer than those in the first blue-wavelength range. An optical system guides the light emitted from the red light source, the light emitted from the second blue-light source, and the light emitted from the fluorescent material, along a unique optical path.
    Type: Application
    Filed: September 7, 2012
    Publication date: April 4, 2013
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Takeshi MIYAZAKI
  • Publication number: 20130083296
    Abstract: A phosphor device contains phosphor particles for emitting light beams, is shaped like a pyramid or cone and includes first and second faces opposed to each other and having different areas. The first face and the inclined faces have reflection layers configured to reflect light beams emitted from the phosphor particles. The second face a reflection preventing film and is an input face for excitation light and also an output face for the light beams. A first film is provided on the first face and parts of the incline faces, allows passage of excitation light and reflects light beams toward the second face.
    Type: Application
    Filed: September 25, 2012
    Publication date: April 4, 2013
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Casio Computer Co., Ltd.
  • Publication number: 20130083297
    Abstract: There is provided a light source unit comprising a first and second light sources, a luminescent light emitting device having a light emitting plate, a light source control device controlling the illumination of the light sources and driving of the light emitting plate, and a light guiding optical system guiding light from the light sources and luminescent light from the light emitting plate so that optical axes coincide to be directed in the same direction, wherein the light emitting plate includes a first area with a luminescent material layer on a reflection layer, a second area transmitting light from the light sources while diffusing it and a third area with a luminescent material layer on a dichroic layer, and wherein the light emitting plate includes a drive motor positioning repeatedly sequentially the first, second and third areas in an optical axis position of light from the light sources.
    Type: Application
    Filed: October 3, 2012
    Publication date: April 4, 2013
    Applicant: CASIO COMPUTER CO., LTD.
    Inventor: Casio Computer Co., Ltd.
  • Publication number: 20130083294
    Abstract: An illumination system is provided, including a blue incoherent light source, a coherent light source, a phosphor module and a beam combining unit. The blue incoherent light source is capable of emitting a blue incoherent light beam. The coherent light source is capable of emitting a coherent light beam. The phosphor module has a first color phosphor zone and a second color phosphor zone. The first color phosphor zone and the second color phosphor zone move into a transmission path of the coherent light beam in turn, to convert the coherent light beam to a first color light beam and a second color light beam respectively. The beam combining unit is disposed on transmission paths of the blue incoherent light beam, the first color light beam and the second color light beam. A projection apparatus is also provided.
    Type: Application
    Filed: August 17, 2012
    Publication date: April 4, 2013
    Applicant: CORETRONIC CORPORATION
    Inventor: Chih-Neng Tseng
  • Patent number: 8408708
    Abstract: A polarization switch provides substantially ideal binary polarization switching over a broad range of wavelengths using a polarization modulation wheel having at least one retarder stack that transforms polarization. Using the polarization modulation wheel in a polarization system provides a high throughput polarization switch and operates over a wide range of incidence angles while providing substantially continuous and smooth polarization output for each component for any selected polarization basis set. The polarization modulation wheel is well-suited for stereoscopic polarized projection applications.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: April 2, 2013
    Assignee: RealD Inc.
    Inventor: Gary D. Sharp
  • Patent number: 8408711
    Abstract: A reflector applied in a projector including a projection control circuit, a light source unit, a beam combiner, and a lens is disclosed. The reflector includes a transparent electrode layer, an electrophoresis layer and a pixel electrode layer. The electrophoresis layer includes a plurality of micro cups, each micro cup contains suspension therein and a plurality of charged particles. The pixel electrode layer includes a plurality of pixel electrodes corresponding to the micro cups. The projection control circuit provides voltages between each pixel electrode and the transparent electrode layer to drive the charged particles to migrate. When the charged particles arrive at the transparent electrode layer, the lights from the light source unit are reflected by the charged particles to the beam combiner to be combined into an image to be transmitted to the lens to project an image.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: April 2, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Presicion Industry Co., Ltd.
    Inventor: Song-Ling Yang
  • Patent number: 8408718
    Abstract: A locally dimmed display has a spatial light modulator illuminated by a light source. The spatial light modulator is illuminated with a low resolution version of a desired image. The illumination may comprise a series of lighting elements that vary smoothly from one element to another at the spatial light modulator.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: April 2, 2013
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Lorne A. Whitehead, Gregory John Ward, Wolfgang Stuerzlinger, Helge Seetzen
  • Publication number: 20130076800
    Abstract: In a light beam scanning projection apparatus which scans a light beam emitted from a laser light source, an image display apparatus is configured including a plurality of light beams, a reflection mirror for reflecting the light beams to project them onto a screen or the like, and a mirror driving unit for driving the reflection mirror so that the plurality of light beams are incident on the reflection mirror with different optical axes and projected on different projection areas, thereby displaying a single image with a plurality of images. Further, by forming a single image by causing a plurality of the light beams to have predetermined relative angles thereamong so as to make a plurality of images overlap on each other with slight shifts, a scanning projection apparatus is provided with which the luminance of the image is improved while conforming to safety standards.
    Type: Application
    Filed: July 19, 2012
    Publication date: March 28, 2013
    Inventors: Michio HATAGI, Takeshi Nakao, Tomoto Kawamura, Kunikazu Ohnishi, Hiromi Kita
  • Publication number: 20130077055
    Abstract: A phosphor device of an illumination system is provided. The illumination system emits a first waveband light and has an optical path. The phosphor device includes a first section and a first phosphor agent. The first phosphor agent is coated on the first section. After the first waveband light is received by the first phosphor agent, the first waveband light is converted into a third waveband light, and the third waveband light is directed to the optical path, so that the third waveband light is separated into at least two color lights along the optical path.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 28, 2013
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Bor Wang, Keh-Su Chang, Chien-Hao Hua
  • Publication number: 20130077056
    Abstract: A projection display apparatus includes a light source unit having an excitation light source that emits excitation light, a rotating body, a plurality of imagers, and a projection unit. The rotating body has a rotating surface provided with a light emitting body that emits emission light in response to the excitation light. A separation optical element separates main component light with a predetermined wavelength, included in emission light, into a first optical path, and separates remaining component light, other than the main component light, included in the emission light, into a second optical path.
    Type: Application
    Filed: September 25, 2012
    Publication date: March 28, 2013
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Sanyo Electric Co., Ltd.
  • Publication number: 20130077057
    Abstract: A laser beam generated by a laser light source is reflected by a light beam scanning device and irradiated onto a hologram recording medium. On the hologram recording medium, an image of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin. The light beam scanning device bends the laser beam at the scanning origin and irradiates the laser beam onto the hologram recording medium. At this time, scanning is carried out by changing a bending mode of the laser beam with time so that an irradiation position of the bent laser beam on the hologram recording medium changes with time. Regardless of an irradiation position of the beam, diffracted light from the hologram recording medium produces a reproduction image of the scatter plate on the spatial light modulator. The modulated image of the spatial light modulator is projected onto a screen by a projection optical system.
    Type: Application
    Filed: September 7, 2010
    Publication date: March 28, 2013
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Makio Kurashige, Kazutoshi Ishida, Tomoe Takanokura, Yasuyuki Oyagi
  • Publication number: 20130077054
    Abstract: The projector according to an exemplary embodiment includes an optical system which forms, expands, and projects the image, and includes at least one light source; a light source dissipation unit for dissipating heat generated by the light source; a plurality of circuit boards for operating the projector; an intake unit having an intake opening where external air is received; an exhaust unit having an exhaust opening where the received air is expelled; and a flow path dividing unit which divides a cooling flow path formed between the intake opening and the exhaust opening into an upper cooling flow path and a lower cooling flow path, wherein the light source dissipation unit is placed on the upper cooling flow path and at least one of the plurality of circuit boards is placed on the lower cooling flow path.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 28, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-geun LIM, Jun-seok PARK, Jean HUR, Sung-je WOO
  • Patent number: 8403492
    Abstract: A light source device includes: a first light source configured to emit a first source light in a first wavelength range; a source light generator configured to generate, from the first light, a color-varying source light having time varying color; a second light source configured to emit a second source light in a second wavelength range that is different from the first wavelength range; and a light source controller configured to control driving timing for turning on and off each of the first light source and the second light source so as to cyclically select one of the color-varying source light and the second source light to be output as an output source light.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: March 26, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventor: Mamoru Shibasaki
  • Patent number: 8405900
    Abstract: There is provided a projection apparatus including a light source, a micromirror element which tilts a plurality of micromirrors arranged in an array +A° or ?A° (A>0) separately from an array surface to form a light image with light components reflected by the plurality of micromirrors, an illumination optical system which uses light emitted from the light source and causes illumination light whose incidence angle is (2A+?)° (?>0) to enter the micromirror element from a direction to which a less than 45° turn is made from a narrow side direction of the array surface of the micromirror element, and a projection optical system which a light image output from the micromirror element enters and which projects the light image onto a projection object.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: March 26, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventor: Masakuni Iwanaga