Plural Patents (Class 353/99)
  • Patent number: 10268034
    Abstract: A telescope includes a first reflector having a first concave cylindrical surface with a first radius and a second reflector having a second concave cylindrical surface with a second radius different from the first radius, and a fixing member configured to fix the first reflector and the second reflector in such a way that the first concave cylindrical surface and the second concave cylindrical surface face each other and a central axis of the first concave cylindrical surface and a central axis of the second concave cylindrical surface are orthogonal to each other.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: April 23, 2019
    Inventor: Hiroshi Taniguchi
  • Patent number: 10162251
    Abstract: A light integrating system includes an integrator rod, a triangular prism, and first and second light sources misaligned with each other. The integrator rod has a light-integrating axis, first and second light-entrance surfaces, a first reflection inclined surface and a first light-exit surface. The triangular prism adjacent to the second light-entrance surface has a third light-entrance surface, a second light-exit surface, and a second reflection inclined surface. Light of the first light source is incident into the integrator rod through the first light-entrance surface and is reflected by the first reflection inclined surface to emit out of the first light-exit surface along the light-integrating axis. Light of the second light source is incident into the triangular prism through the third light-entrance surface and is reflected by the second reflection inclined surface to emit out of the first light-exit surface through the second light-exit surface and the second light-entrance surface sequentially.
    Type: Grant
    Filed: April 15, 2018
    Date of Patent: December 25, 2018
    Assignee: Qisda Corporation
    Inventors: Chih-Shiung Chien, Ming-Kuen Lin
  • Patent number: 9973734
    Abstract: A vehicle circumference monitoring apparatus includes: an image acquisition section that acquires captured image data output from an imaging section that is provided in a vehicle and images a circumference of the vehicle; a state acquisition section that acquires vehicle state data output from a vehicle state detection section that is provided in the vehicle and detects at least a roll state of the vehicle; a setting section that sets a center of rotation to rotate a display image depending on the roll state if the display image is displayed on a display device based on the captured image data; an image adjustment section that rotates a display state of the display image about the center of rotation that is set depending on the roll state; and an output section that outputs the display image to the display device.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: May 15, 2018
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Kazuya Watanabe, Tetsuya Maruoka, Itsuko Ohashi
  • Patent number: 9897923
    Abstract: A micromirror array has the form of a sheared rectangle. In an arrangement in an illumination optical unit, one side is aligned perpendicular to a scanning direction.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: February 20, 2018
    Assignee: Carl Zeiss SMT GmbH
    Inventor: Martin Endres
  • Patent number: 9864260
    Abstract: An image display apparatus and an image display unit. The image display apparatus and the image display unit includes a light source configured to emit light, an illumination optical system including a luminous body forming device configured to form a secondary luminous body, the illumination optical system guiding the light emitted from the light source, an optical modulation element including a plurality of reflection planes to modulate the light guided by the illumination optical system, and a projection optical system including a projection lens system and a barrel storing the projection lens system, the projection optical system projecting the light modulated by the optical modulation element onto a projection plane. The barrel satisfies an equation ?<0.71H+8.5, where ? denotes an outside diameter of a front end of the barrel on a light entering side and H denotes distance between the reflection planes and the front end of the barrel.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: January 9, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuyuki Shibayama, Hibiki Tatsuno, Yohei Takano
  • Patent number: 9857570
    Abstract: A reflector can have a conical shape. The shape can tapers from a wide base to an apex. The apex can include an aperture, a mirror, and a set of one or more optical elements. A mirror is location in a cavity and is positioned within an overhang enclosure of the device in a plane approximately parallel to a circular cross section of the conical shape. The mirror can reflect environmental light that is reflected by the reflector into the aperture or reflect light emitting from the aperture onto the reflector. Stray light reflected by the mirror is absorbed by the cavity walls. A set of one or more optical elements can be positioned at least partially within a volumetric region of the reflector. The one or more optical elements focus light passing through the aperture to an image sensor.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: January 2, 2018
    Assignee: HOYOS INTEGRITY CORPORATION
    Inventors: Patricio Durazo, Gary Peterson, William H. Robertson, Jr., John N. Shemelynce, Amit Verma
  • Patent number: 9778551
    Abstract: An illumination optical system is provided that is configured to guide light emitted from a light source to an image generation unit that is arranged to be movable in a direction perpendicular to incoming light and is configured to generate an image by reflecting the incoming light. The illumination optical system includes a first lens that is arranged to be movable in a direction perpendicular to an optical axis of the first lens, a second lens that is arranged to be movable in a direction that changes a face-to-face distance between the first lens and the second lens, and a lens position control unit configured to displace the first lens and the second lens.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: October 3, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoshi Tsuchiya, Tetsuya Fujioka, Hideo Kanai, Yasunari Mikutsu, Akihisa Mikawa, Yukimi Nishi, Jun Mashimo, Takahiro Hiramatsu, Yoshito Saito
  • Patent number: 9746652
    Abstract: A projection lens includes, in order from a magnification side to a reduction side, a first lens group having a negative refractive power, a reflector to bend an optical path, a second lens group having a positive refractive power, and an aperture stop disposed within the second lens group. The second lens group has a positive refractive power on the magnification side of the aperture stop, and a negative refractive power on the reduction side of the aperture stop. Conditional formula (A) is satisfied: (A) Ot/Y?<6.1, where Ot is a distance along the optical axis between a maximum-magnification-side surface of the first lens group and a surface of a lens adjacent to a reduction-side surface of the reflector, and Y? is a maximum height of the image displayed on the display surface of the image display element.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: August 29, 2017
    Assignee: Ricoh Company, Ltd.
    Inventor: Takashi Kubota
  • Patent number: 9625800
    Abstract: A light source unit includes one or more solid-state light sources and a light collecting optical system. The one or more solid-state light sources are arranged on a rear side of an output portion and each output light in a predetermined wavelength range along the same direction as an optical-axis direction. The output portion includes a light emitter that is excited by the light in the predetermined wavelength range with a predetermined direction as the optical-axis direction to emit visible light in a wavelength range longer than the predetermined wavelength range. The output portion is also capable of outputting light containing the light in the predetermined wavelength range and the visible light from the light emitter along the optical-axis direction. The light collecting optical system collects the light in the predetermined wavelength range.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: April 18, 2017
    Assignee: SONY CORPORATION
    Inventors: Takashi Takamatsu, Yoshihisa Aikoh
  • Patent number: 9591279
    Abstract: A light source unit includes a fluorescent member configured to emit, when irradiated with excitation light, fluorescence light having a wavelength different from a wavelength of the excitation light, and a controller configured to adjust a conversion efficiency from the excitation light to the fluorescence light of the fluorescent member so that a gradient T satisfies 0.35G?T?0.8G in a fluorescence characteristic of the fluorescent member when a horizontal axis represents a normalized light intensity of the excitation light so that a maximum light intensity of the excitation light incident on the fluorescent member is normalized to 1, and a vertical axis represents the light intensity of the fluorescence light from the fluorescence member irradiated with the normalized light intensity of the excitation light, where G represents a gradient in the fluorescence characteristic when the normalized light intensity of the excitation light is 0.3.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: March 7, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Ryota Kadowaki
  • Patent number: 9581887
    Abstract: There is provided a light source device including at least one light source configured to emit light, a diffusion plate configured to diffuse and reflect the light emitted from the light source, and a partial transmission member which is provided between the light source and the diffusion plate and has a transmission region which allows the light to pass through and a reflection region which reflects the light and is except the transmission region.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: February 28, 2017
    Assignee: Sony Corporation
    Inventor: Shinichiro Tajiri
  • Patent number: 9525840
    Abstract: According to an embodiment of the invention, an image projection apparatus includes: a light source device; a first circuit board including an image display device configured to form an image using light, a connector, and an electrically conductive portion near the connector; a retaining member made of metal; an optical illuminating unit held by the retaining member and configured to guide the light to the image display device; an optical projecting unit configured to project the image onto a projection surface; a second circuit board configured to be electrically connected to the connector; a metal plate fixed and electrically connected to the retaining member; and an elastic metal member arranged on the metal plate. The first circuit board is fixed to the retaining member. The elastic metal member is in contact with the electrically conductive portion. The second circuit board is fixed and electrically connected to the metal plate.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: December 20, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masamichi Yamada, Tetsuya Fujioka, Naoyuki Ishikawa, Akihisa Mikawa, Hideo Kanai, Yasunari Mikutsu, Satoshi Tsuchiya
  • Patent number: 9523908
    Abstract: An image projection method includes: reflecting, by a concave mirror, light having transmitted through one or more lenses after forming an intermediate-focused image of the light; and projecting an image onto a projection plane through reflecting the light reflected by the concave mirror by a plane mirror that has an aspect ratio of 1.9 or more.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: December 20, 2016
    Assignee: Sony Corporation
    Inventors: Toshifumi Yasui, Mikinori Matsuda
  • Patent number: 9274409
    Abstract: Provided is an image projection apparatus, such as a projector, including a light source; an image generating element such as a DMD that receives light from the light source and forms an image; an image generating unit that irradiates the image generating element with the light from the light source; a first optical system including multiple transmission refractive optical elements; a second optical system arranged on an optical path of outgoing light of the first optical system and including a reflection optical element; and a projection optical system that enlarges and projects an image conjugate to the image generated by the image generating element as a projected image. The light source, the image generating unit, and the first optical system are arranged side by side in series in a direction parallel with the projected image plane.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: March 1, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuya Fujioka, Masamichi Yamada, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Patent number: 9210306
    Abstract: Some embodiments include methods for correcting optical alignment of components in a camera module for a multifunction device. In some embodiments, components of a camera module for use in a multifunction device are assembled on a test station. Some embodiments include a method that includes capturing a single test image, calculating from the spatial frequency response data an optical tilt between the optical axis of a lens and an optical axis of the image sensor of the camera module, and mechanically adjusting an alignment of the lens and the optical axis of the image sensor of the camera module to reduce the optical tilt. In some embodiments, the capturing is performed using the components of the camera module, and the single test image contains visually encoded spatial frequency response data for characterizing the components of the camera module.
    Type: Grant
    Filed: May 31, 2014
    Date of Patent: December 8, 2015
    Assignee: Apple Inc.
    Inventors: Mark N. Gamadia, Iain A. McAllister, Steven Webster
  • Patent number: 9039196
    Abstract: An image displaying apparatus including a light source, an image displaying element configured to control exiting of incident light to display an image, an illumination optical system configured to illuminate the image displaying element with light exiting from the light source, and a projection optical system configured to project an image displayed on a display surface of the image displaying element, to provide an enlarged display. The projection optical system includes a lens optical system, a first mirror configured to reflect light transmitted through the lens optical system, and a second mirror configured to reflect light reflected from the first mirror toward the surface to be projected onto, and one of the mirrors is arranged at a position conjugate to the image displaying element, and wherein an optical surface of the one mirror is arranged to face vertically downward.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: May 26, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Makoto Hirakawa, Hibiki Tatsuno, Takanobu Osaka, Yasuyuki Shibayama, Kiichiro Nishina
  • Patent number: 9039207
    Abstract: A method for providing a feedback circuit for a three dimensional projector. First and second input devices and a sensor for determining the rotational speed of the second input device are provided. A control device for controlling the rotational speed of the second input device and a phase locked loop (PLL) are provided. A phase reference signal is created based on the signal rate of the first input device. A phase signal is created based on the rotational speed of the second input device. The PLL compares the phase reference signal and the phase feedback signal to determine whether the first input device and the second input device are synchronized. A signal is sent to the control device for the second input device to change the rotational speed of the second input device in response to determining that the first input device and the second input device are not synchronized.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: May 26, 2015
    Assignee: International Business Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Patent number: 9033521
    Abstract: A projection device having an image beam and an off-state light is provided, which includes a camera module, a condensing element, a digital micromirror device (DMD) and a shading element, wherein the DMD allows the image beam to enter the camera module, and the shading element is configured between the DMD and the condensing element to block the off-state light.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: May 19, 2015
    Assignee: Young Optics Inc.
    Inventors: Hui-Ping Chen, Cheng-Wei Tien
  • Patent number: 9022582
    Abstract: Embodiments relate generally to computer-based image processing, and more particularly, to systems, computer-readable media, methods, integrated circuits, and apparatuses to facilitate operation of a projection system with relatively high dynamic range output by, among other things, providing subsets of light patterns along an optical path during respective first and second temporal fields associated with respective first and second illuminants. The projection system can synthesize color for projectable images by combining or otherwise using the subsets of light patterns with an array of color elements to produce projectable images with color in at least the visible spectrum.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: May 5, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Michael Kang, Gerwin Damberg
  • Patent number: 9016865
    Abstract: Illumination device includes a light source (101); an illumination optical system (102, 103, 104, 106, 107) that spatially splits each of the plurality of color light beams emitted from the light source, superimposes the split light beams of each of the plurality of color light beams, and emits the superimposed light beams to a display element (110); a reflective polarization plate (109) that is arranged between the illumination optical system (102, 103, 104, 106, 107) and the display element (110) and that transmits first polarized light and reflects second polarized light whose polarization state is different from that of the first polarized light toward the illumination optical system (102, 103, 104, 106, 107); a reflection element (105) that is arranged at a position where each of the plurality of color light beams is spatially split by the illumination optical system and that transmits the split light beams of each of the color light beams and reflects, of the split light beams of each of the color light
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: April 28, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Atsushi Katou
  • Patent number: 9016873
    Abstract: A method for providing a feedback circuit for a three dimensional projector. First and second input devices and a sensor for determining the rotational speed of the second input device are provided. A control device for controlling the rotational speed of the second input device and a phase locked loop (PLL) are provided. A phase reference signal is created based on the signal rate of the first input device. A phase signal is created based on the rotational speed of the second input device. The PLL compares the phase reference signal and the phase feedback signal to determine whether the first input device and the second input device are synchronized. A signal is sent to the control device for the second input device to change the rotational speed of the second input device in response to determining that the first input device and the second input device are not synchronized.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: April 28, 2015
    Assignee: International Business Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Patent number: 9010943
    Abstract: A display device includes: a display portion having a screen that can display an image; and an image forming substrate formed into a plate, wherein the image forming substrate are configured to be switchable between a first state where the screen is arranged to be inclined with respect to the first main surface such that light from the screen enters the image forming substrate from the first main surface side and forms the image on the second main surface side and a second state where the display portion and the image forming substrate are aligned in the thickness direction and are arranged along each other.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: April 21, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takafumi Shimatani, Kentarou Imamura, Shigeto Yoshida
  • Patent number: 9004701
    Abstract: A light source unit may include a cooling device; a luminescent substance; an excitation radiation source having a laser source; and an optical element arranged between the radiation source and the substance; wherein the cooling device constitutes a heat sink, wherein the substance is linked thermally to the heat sink; and wherein the optical element is designed as an integrating optical element and is coupled between the radiation source and the substance in such a manner that a part of the radiation emitted by the radiation source, entering in an acceptance angle range of the integrating optical element, is subjected to an internal reflection in the optical element before it exits the optical element and strikes the substance, and that a part of the radiation emitted by the substance enters the optical element and exits the optical element as effective radiation.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: April 14, 2015
    Assignee: Osram AG
    Inventors: Dirk Berben, Mathias Bruemmer, Ulrich Hartwig, Nico Morgenbrod, Matthias Morkel
  • Patent number: 9004700
    Abstract: A projector system that includes a first input device, a second input device, a control device, a sensor and a phase locked loop (PLL). A phase reference signal is created based on a signal rate of the first input device. A phase feedback signal is created based on the rotational speed of the second input device as it is measured by the sensor. The PLL compares the phase reference signal and the phase feedback signal to determine whether the first input device and the second input device are synchronized. A signal is sent to the control device for the second input device to change the rotational speed of the second input device in response to determining that the first input device and the second input device are not synchronized.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: April 14, 2015
    Assignee: International Business Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Patent number: 9004699
    Abstract: A light source system for use in a projector is provided. The light source system comprises a main optical axis, a first sub-optical axis, a second sub-optical axis, at least one first optical module, at least one second optical module and a third optical module. The at least one first optical module comprises a first light source array and a second light source array for emitting a plurality of first beams and a plurality of second beams respectively. The at least one second optical module comprises a third light source array for emitting a plurality of third beams. The third optical module integrates the first beams, the second beams and the third beams into a main beam for projection along the main optical axis.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 14, 2015
    Assignee: Delta Electronics, Inc.
    Inventor: June-Jei Huang
  • Patent number: 8998427
    Abstract: A method of projecting an image is provided. The method includes the step of providing a first light source, the first light source emitting light at a first polarization. A second light source is provided adjacent the first light source, the second light source emitting light at a second polarization. A digital mirror device is provided (DMD), the DMD having a first axis. A mirror is provided optically disposed between the first light source, the second light source and the DMD, the mirror being adjacent the DMD. A first light is emitted from the first light source. The first light is reflected with the mirror onto the DMD. A second light is emitted from the second light source after the first light is emitted. The second light is reflected with the mirror onto the DMD.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: April 7, 2015
    Assignee: International Business Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Patent number: 8992025
    Abstract: The invention relates to a rear project device, comprising a screen, projection optics, and an image module for generating an image, which is projected from the rear onto the screen by means of the projection optics, so that an observer located in front of the screen can perceive the image projected onto the screen. Furthermore, a method for such a rear projection apparatus is described. To this end, a Fresnel mirror, or an aspherical mirror, is used.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: March 31, 2015
    Assignee: Young Optics Inc.
    Inventors: Eberhard Piehler, Gudrun Schroeter, Guenther Benedix, Gertrud Blei, Thomas Maack
  • Patent number: 8985785
    Abstract: A projection system is provided. The system includes a first light source emitting light at a first polarization. A second light source is provided adjacent the first light source, the second light source emitting light at a second polarization. A digital mirror device (DMD) is provided having a first axis. A mirror optically is disposed adjacent the DMD between the first light source, the second light source and the DMD. The first light source and second light source emit light that is reflected onto the DMD.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: March 24, 2015
    Assignee: International Business Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Patent number: 8985786
    Abstract: Provided is an image projection apparatus, such as a projector, including a light source; an image generating element such as a DMD that receives light from the light source and forms an image; an image generating unit that irradiates the image generating element with the light from the light source; a first optical system including multiple transmission refractive optical elements; a second optical system arranged on an optical path of outgoing light of the first optical system and including a reflection optical element; and a projection optical system that enlarges and projects an image conjugate to the image generated by the image generating element as a projected image. The light source, the image generating unit, and the first optical system are arranged side by side in series in a direction parallel with the projected image plane.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 24, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Tetsuya Fujioka, Masamichi Yamada, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Publication number: 20150077725
    Abstract: An illumination unit includes a light source, an optical mixer to form secondary light sources from a light beam from the light source, and an illumination system to illuminate an optical modulator with the light beam from the optical mixer, including an optical element having an anamorphic surface, in which the optical element is rotated at a certain rotational angle about a rotational axis which is a normal line from a vertex of a surface of the optical element.
    Type: Application
    Filed: September 16, 2014
    Publication date: March 19, 2015
    Inventor: Yasuyuki SHIBAYAMA
  • Patent number: 8974064
    Abstract: A light source apparatus includes a light source unit that includes plural sets of a laser and a coupling lens corresponding to the laser, which are circumferentially provided to form a circle; and a reflecting unit placed within the circle and provided with plural reflecting surfaces corresponding to the lasers of the plural sets of the light source unit to be formed in a cone shape, the light irradiated from each of the lasers being injected into the corresponding reflecting surface via the corresponding coupling lens.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: March 10, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Ikuo Maeda
  • Patent number: 8967812
    Abstract: A projection optical system substantially consists of a first optical system composed of a plurality of lenses and a second optical system composed of one reflection mirror having a convex aspherical surface arranged in this order from the reduction side and is configured, when an air space between the first optical system and the second optical system is taken as T12 and a displacement in a direction of the optical axial from a position of maximum effective height on the magnification side lens surface of the lens disposed on the most magnification side in the first optical system to the vertex of the lens surface is taken as Zf, to satisfy a conditional expression (1): 0.1<Zf/T12<1.0, in which an image formed on a conjugate plane on the reduction side is magnified and projected onto a conjugate plane on the magnification side.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: March 3, 2015
    Assignee: FUJIFILM Corporation
    Inventor: Masaru Amano
  • Patent number: 8970655
    Abstract: A videoconferencing unit for enhancing direct eye-contact between participants can include a curved fully reflective mirror to reflect the image of the near end to a camera. The curved mirror can be placed in front of the display screen near a location where images of faces/eyes of far end participants are to appear. In another example, the videoconferencing unit can include a disintegrated camera configuration that provides an air gap between a front lens element and a rear lens element. The front lens element can be located behind an aperture within the display screen. The air gap can provide an unobstructed path to light from projectors and therefore avoid any undesirable shadows from appearing on the display screen. In another example, the videoconferencing unit can include a combination of the disintegrated camera configuration and mirrors for providing direct eye contact videoconferencing.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 3, 2015
    Assignee: Polycom, Inc.
    Inventors: Gopal Paripally, Craig Clapp, Tony Pham
  • Patent number: 8960917
    Abstract: A digital light processing projector includes a light emitting diode (LED), a laser, a rotatable optical element, a reflector, a first filter, a second filter, a digital micro-mirror device (DMD), and a projection lens. The LED and the laser respectively emit a first and second homogeneous lights. The rotatable optical element converts a first portion of the second homogeneous light to a third homogeneous light, reflects the third homogeneous light, and transmits a second portion of the second homogeneous light. The reflector reflects the third homogeneous light. The first filter transmits the first homogeneous light, and reflects the second portion to the second filter. The second filter transmits the second portion and the first homogeneous light, and reflects the third homogeneous light to the DMD. The DMD modulates the first, second and third homogeneous lights to obtain optical images. The projection lens projects the optical images on a screen.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: February 24, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Kuo-Fong Tseng
  • Patent number: 8960913
    Abstract: A system is provided for projecting a three-dimensional image. The system includes a first light source, emitting a light of a first color and a second light source emitting light of a second color. At least one polarizing beam splitter (PBS) is disposed adjacent the first light and the second light source, and at least one imaging device is disposed adjacent the at least one PBS.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: February 24, 2015
    Assignee: International Busniess Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Publication number: 20150049310
    Abstract: The invention pertains to a projector comprising an optical engine, a projection lens, a means for light deviation, and an afocal lens system, wherein the projector has a total throw ratio between 0.7 and 0.8. Such a projector can be used to build a very compact and cost-effective back-projection system. The invention also pertains to a projection assembly comprising such a projector, followed by a means for light gradation and a front-surface mirror. The invention also pertains to a display system comprising at least one such projection and a display screen.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Inventors: Koenraad VERMEIRSCH, Rik DEFEVER, Peter GERETS
  • Publication number: 20150049313
    Abstract: A light source device includes a laser diode module, a light guide plate selectively optically coupled to the laser diode module, a light projector selectively optically coupled to the laser diode module, and a light path switch module located between the laser diode module and the light guide plate and rotatably switched between a first position and a second position to change a light path of a laser beam emitted from the diode module to a first direction and a second direction different from the first direction. Along the first direction, the laser beam is guided to move toward the light guide plate. Along the second direction, the laser beam is guided to move toward the light projector. The light guide plate has a light incident face which is an arced face recessed from a corner of the light guide plate.
    Type: Application
    Filed: November 12, 2013
    Publication date: February 19, 2015
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: PO-CHOU CHEN
  • Patent number: 8955978
    Abstract: An external polarization conversion device used for a projector includes a first element which converts light from the projector to polarized light in a uniform polarization direction, and a second element which is arranged in a position subsequent to the first element in such a way that there is a space between the first element and the second element and which converts the polarized light from the first element to predetermined polarized light that is different from the polarized light from the first element.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: February 17, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Hiroaki Yanai
  • Patent number: 8955977
    Abstract: A projection-type image display apparatus includes a color separation element including a color separation surface, a light modulation element configured to receive the light divided by the color separation element, a polarizing beam splitter disposed between the color separation element and a projection optical system to separate a light path of a light modulated by the light modulation element according to a polarization direction and guide the resulting light to the projection optical system, and a phase difference plate disposed between the color separation element and the light modulation element. An optic axis of the phase difference plate and the normal of the color separation surface are substantially parallel or perpendicular to each other, in a cross section parallel to a normal of the color separation surface and a normal of the light modulation element.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: February 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yutaka Yamaguchi, Takehito Kawasumi
  • Publication number: 20150042968
    Abstract: Provided is a light source apparatus that includes light emitting tube (21), light pipe (23) which has incident surface (23a) into which light from light emitting tube (21) enters and which has exit surface (23b) from which light that has entered incident surface (23a) is subjected to multiplex reflection to be output, lens (25) into which the light output from exit surface (23b) enters, first parabolic reflection mirror (26) that reflects a part of the light that is output from exit surface (23b) and that does not enter lens (25), and second parabolic reflection mirror (27) which makes the light reflected by first parabolic reflection mirror (26) enter incident surface (23a).
    Type: Application
    Filed: March 23, 2012
    Publication date: February 12, 2015
    Inventor: Masami Takauchi
  • Patent number: 8950874
    Abstract: A projection optical system for use in an image display apparatus having an illumination optical system applying light from a light source, and an image display device receiving the light from the illumination optical system to form a projection image includes a projector lens composed of plural lenses, a first mirror, and a second mirror formed of a concave mirror. The projection optical system is configured to project the projection image onto a projection surface. A projection luminous flux passing through the projector lens to be incident on the first mirror is a luminous flux exhibiting divergence. The projection luminous flux reflected off the second mirror after having reflected off the first mirror is converged once, and the once converged projection luminous flux is projected onto the projection surface. A lens surface of a lens located closest to the first mirror among the lenses of the projector lens is convex.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: February 10, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Hibiki Tatsuno
  • Patent number: 8950869
    Abstract: A method for projecting a three-dimensional image, that includes providing a first light source and a second light source. A polarizing beam splitter (PBS) is disposed adjacent the first light source and the second light source. An imaging device is adjacent the PBS. A polarization flipping element is disposed adjacent the PBS opposite the imaging device, and a mirror is disposed adjacent the polarization flipping element. A first light is emitted from the first light source. The first light is polarized such that it reflects through the PBS to a polarization flipping element. The first light passes through the polarization flipping element twice such that it will reach the surface of the imaging device. The second light is emitted from the second light source after the first light is emitted. The second light is polarized such that the light passes through the PBS to the imaging device.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: February 10, 2015
    Assignee: International Business Machines Corporation
    Inventor: Casimer M. DeCusatis
  • Patent number: 8944610
    Abstract: An image projection apparatus includes a light source; a projected image outputting unit having multiple mirrors arranged in a matrix, to which radiating light emitted from the light source while controlling an angle of a light reflection face of each of the mirrors; a control unit controls the angle of light reflection face of the mirrors using the a division half-toning control based on image data of a projected image, and settings of control parameters used for the time division half-toning control; and an image capturing device to capture the projected mage. When the control unit detects a false contour in a projected test pattern image based on image data of the projected test pattern image captured by the image capturing device, the control unit corrects the control parameters for the time division half-toning control based on detection of the false contour.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: February 3, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Otoichi Nakata
  • Publication number: 20150029474
    Abstract: A projective optical system comprises: a lens optical system including lenses; and a transmissive optical element having an anamorphic surface and being provided in an optical path between the lens optical system and a projected surface, wherein the transmissive optical element has a curvature with respect to a direction corresponding to a long side of a display screen of the image display element, and on a cross-sectional surface being perpendicular to the long side of the display screen, and with respect to light being emitted from the lens optical system and being incident to the transmissive optical element, a light intensity of a first light flux being incident to the transmissive optical element at a first incident angle is lower than a light intensity of a second light flux being incident to the transmissive optical element at a second incident angle being larger than the first incident angle.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 29, 2015
    Inventor: Hibiki TATSUNO
  • Patent number: 8936369
    Abstract: An illuminator includes: a light source section including a laser light source; an optical element through which a laser beam from the laser light source passes; a driving section oscillating the optical element; and a control section controlling, in a driving operation performed by the driving section, the driving operation to allow an oscillating amplitude value of the optical element in a startup period of the optical element to be equal to or less than the oscillating amplitude value of a steady-state operation period of the optical element that is subsequent to the startup period.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 20, 2015
    Assignee: Sony Corporation
    Inventor: Hiroshi Isobe
  • Patent number: 8931906
    Abstract: A light emitting unit array including a plurality of micro-light emitting diodes (?-LEDs) is provided. The micro-light emitting diodes are arranged in an array on a substrate, and each of the micro-light emitting diodes includes a reflection layer, a light emitting structure, and a light collimation structure. The light emitting structure is disposed on the reflection layer, and includes a first type doped semiconductor layer, an active layer, and a second type doped semiconductor layer that are stacked sequentially. At least a portion of the first type doped semiconductor layer, the active layer, and the second type doped semiconductor layer are sandwiched between the reflection layer and the light collimation structure.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: January 13, 2015
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Yang Huang, Chia-Hsin Chao, Wen-Yung Yeh
  • Patent number: 8926102
    Abstract: A safety protection method for a laser projection apparatus is provided. The laser scanning apparatus includes a laser source, a laser source driver, a scanning mirror, and a light-outputting port. The laser source driver is configured to drive the laser source to emit a laser beam. The safety protection method includes the following steps. Firstly, after the laser projection apparatus is powered on, an optical path of the laser beam is adjusted, so that the laser beam is not ejected out from the light-outputting port. Then, the laser source driver is disabled. Then, a judging step is performed to judge whether an intensity of the laser beam is higher than a threshold level. If the intensity of the laser beam is higher than the threshold level, the laser source is turned off.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: January 6, 2015
    Assignee: Lite-On Technology Corporation
    Inventor: Yu-Nan Tsai
  • Patent number: 8919961
    Abstract: Inflatable, flexible, collapsible, linear solar concentrator and heliostat designs, made primarily of flexible and elastic sheets enclosing and separating air-tight chambers which are elongated along and parallel to a main axis, with the chambers pressurized to different pressures form a structure and control the focus and rotation of a mirror.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: December 30, 2014
    Assignee: Nelson Planting
    Inventor: Nelson Planting
  • Patent number: 8919969
    Abstract: A system for on-product projection and display of electronic content. The system includes a projector for projecting electronic content, a mirror film stack having a reflective surface facing the projector, and a product having an exterior surface facing the reflective surface of the mirror film stack. A graphic is located on a surface of the mirror film stack opposite the reflective surface. The electronic content from the projector is projected onto the exterior surface of the product via the reflective surface of the mirror film stack. The graphic can be located on a display window and hide the mirror from a viewer without completely blocking a view of the projected electronic content. The product can include a removable projection screen for displaying the electronic content, and the projection screen can include a removable label on its non-viewer side to advertise or promote the product.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: December 30, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Rolf W. Biernath, Matthew C. Robbins, Ellyar Y. Barazesh, David A. Harper
  • Patent number: 8919962
    Abstract: Provided is an optical apparatus including a polarization separation element for separating an incident light beam into a first polarization component and a second polarization component and outputting the first polarization component and the second polarization component, a polarization conversion unit including a waveplate for converting one of the first polarization component and the second polarization component into the other polarization component, the waveplate being held to a holding metal plate, and a housing for holding the polarization separation element and the polarization conversion unit.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 30, 2014
    Assignee: Sony Corporation
    Inventor: Yoshihisa Aikoh