With Reflective Surface (e.g., Mirror) Patents (Class 362/560)
  • Patent number: 8511878
    Abstract: A light emitting device is provided, comprising a light guide plate (100) and at least one light emitting diode (110). An array of mutually spaced apart reflective surface elements (103, 103?) is arranged between said back surface (102) and said front surface (103). The reflective surface elements (103, 103?) are non-parallel relative to said back surface (101) and front surface (102), and have a front side (104) facing said front surface (102) and a back side (105) facing said back surface (101). The back surface (105) of a reflective surface element (103) faces the front surface (104) of an adjacent reflective surface element (103?). The at least one light emitting diode (110) is arranged to emit light into a region (111) between two adjacent ones of said reflective surface elements (103, 103?). Since the reflective surface elements are located within the light guide, both the back surface and the front surface of the light guide plate may be made flat.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: August 20, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Michel Cornelis Josephus Marie Vissenberg, Willem Lubertus Ijzerman
  • Patent number: 8511831
    Abstract: An optical device includes a main body having a light incident surface, a light emitting surface provided facing the light incident surface, and a light-reflecting side surface provided from a periphery of the light incident surface to a periphery of the light emitting surface. In the optical device, the light incident surface, the light emitting surface and the light-reflecting side surface are mirror-finished, and a supporting portion configured to support the main body is provided on the light-reflecting side surface.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: August 20, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takashi Ikeda, Yoshihiro Yokote, Shinya Matsumoto, Keietsu Sato, Kazutaka Tomite
  • Patent number: 8500308
    Abstract: A light source device is provided with an LED having strong directivity, a reflective hood which has an interior reflecting surface for reflecting the illumination light from the light source, and a pair of first and second polarizing reflective plates for polarizing the illumination light from the LED in a specific direction. The first and second polarizing reflective plates have a specific length and width, and a back surface formed from a high reflectance plate. The light source is secured to the reflective hood. A specific interval is provided between the first and second polarizing reflective plates and the reflecting surface of the reflective hood, and a specific interval is provided between the two plates with the optical axis passing through the 0° direction angle of the light source in between.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: August 6, 2013
    Assignee: Opto Design, Inc.
    Inventors: Eiichi Sato, Kenji Fukuoka, Hiroyasu Sato
  • Patent number: 8485708
    Abstract: Embodiments of the present invention provide a system and method for shaping an annular focal spot pattern to allow for more efficient optical coupling to a small gauge optical fiber. An embodiment of the present invention can include an illumination source operable to transmit an optical beam along an optical path, an optical fiber, and a correcting element positioned in the optical path between the illumination source and the optical fiber, the correcting element configured to reshape the optical beam to increase an amount of light received by the optical fiber.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: July 16, 2013
    Assignee: Alcon Research, Ltd.
    Inventors: Alex Artsyukhovich, T. Scott Rowe
  • Patent number: 8425062
    Abstract: A display unit illuminated from in front of a display area, the display unit including a display area for presenting visual information to a user of the unit, a lens element spaced apart from and extending across the display area, and a source of illumination at a peripheral edge of the lens element for providing front illumination of the display area.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: April 23, 2013
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Upton Beall Bowden, Martin Green
  • Patent number: 8419253
    Abstract: A lighting display system having an anti-theft feature has a mounting structure having at least one mounting plate having a front side and a back side, first and second conductor lines carried by the at least one mounting plate, and a plurality of luminescent bodies, wherein each of the plurality of luminescent bodies has first and second contact plugs exposed at a back side of the luminescent body and connected to the first and second conductor lines where a line extending between centres of the first and second contact plugs is oriented at an angle of more than 105° or less than 85° relative to a direction of extension of the first conductor line, and a plurality of light sources electrically connected to the first and second conductor lines via the first and second plugs and fixing members.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: April 16, 2013
    Assignee: Mass & Ross AG
    Inventor: Alexander Burrak
  • Publication number: 20130083183
    Abstract: A digital diagnostic system with interchangeable lenses includes a host and at least one optical lens module, wherein the host without any optical lens having curved surface includes a focus adjustment module which drives an image capture module to linearly move. Therefore, the optical system of the optical lens module can be designed independently, and no need to include focus adjustment mechanism, so that the optical design of the optical lens module can be greatly simplified, and the system allows a greater mechanism tolerance, thereby reducing manufacturing difficulty and manufacturing cost.
    Type: Application
    Filed: December 28, 2011
    Publication date: April 4, 2013
    Inventors: Chu-Ming CHENG, Long-Sheng Liao, Yu-Tsung Lee
  • Patent number: 8393773
    Abstract: A light-guide light is described that is capable of providing a substantially monochromatic beam of light, and is suitable for use as a signal lamp in an automotive vehicle. The light (1) comprises a housing defining a light-guiding optical cavity (4) having first and second major faces (5, 6), and a light source (11) arranged to direct light into the cavity from one side. The light source may be an array of light emitting diodes providing substantially monochromatic light. The first major face (5) comprises an interference film (for example, a multilayer polymeric film) that, for light at the design wavelength, substantially transmits light that is incident on the film over a limited angular range and substantially reflects light that is incident at other angles. The second major face (6) comprises a scattering reflective material having a reflectance of at least 85%, for example a highly-efficient reflective material provided with a suitable textured pattern.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: March 12, 2013
    Assignee: 3M Innovative Properties Company
    Inventor: Michael Charles Lea
  • Patent number: 8382336
    Abstract: A lighting apparatus includes a body having a bottom surface and a side surface, a poly-pyramid shaped reflector being placed on the bottom surface of the body and including at least three reflective surfaces, and a light source being placed on the side surface of the body, including at least one light emitting device and being placed in an area corresponding to at least one of the reflective surfaces of the reflector.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: February 26, 2013
    Assignee: LG Innotek Co., Ltd.
    Inventors: Young Kuk Kwak, Sang Jun Hong, Ji Hoo Kim
  • Patent number: 8382324
    Abstract: A radiation structure without a light guiding board for a backlight module or an illuminant device includes an optical plate formed with at least one rising area having a rising surface defined at the center thereof, two light sources disposed adjacent to two sides of the optical plate, and a diffusion plate. The light sources each possess a radiant half-intensity angle below 15 degrees for respectively forming optic axial directions thereof, allowing a radiation field to be diffusively formed from the pivoting of the optic axial directions. Whereby, the optic axial directions respectively face toward the rising surface, allowing the projection of the radiation field on the rising surface, and the diffusion plate is disposed above the rising area of the optical plate. Therefore, an even radiating surface caused by a diffusion of the light sources from the diffusion plate could be preferably obtained even if no light guiding board is applied.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: February 26, 2013
    Assignee: Southern Taiwan University
    Inventors: Chih-Chieh Kang, Jeng-Feng Lin, Yu-Chang Wu, Chun-Xian Yu, Tai-Jung Chen, Shao-Tun Chuang
  • Patent number: 8360623
    Abstract: A lighting device for a vehicle includes a light conducting rod, at least one light source, at least one first reflecting part, and at least one second reflecting part. The light source is connected to at least one end of the light conducting rod. The first reflecting part and the second reflecting part are located on the light conducting rod and respectively have a reflecting surface toward the light source. A first distance between the first reflecting part and the light source is less than a second distance between the second reflecting part and the light source, and the curvature of the reflecting surface of the second reflecting part is greater than the curvature of the reflecting surface of the first reflecting part.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: January 29, 2013
    Assignee: Maxzone Auto Parts Corp.
    Inventors: Chiun-Jie Lin, Yung-Hua Chen
  • Patent number: 8353612
    Abstract: An optical device, in particular for a motor vehicle, such as a lighting or signaling device, this device comprising at least one light guide which is designed to guide at least part of the light which is emitted by a source of light, the light guide comprising at least one output surface and at least one main reflection surface, which is designed to reflect towards the output surface light which is propagated in the guide, the light guide comprising a portion for coupling with the source of light, this coupling portion having a transverse axis (Y), wherein the coupling portion is arranged such that the light which is emitted from this coupling portion is propagated in the light guide, around the transverse axis, according to a total angular opening, measured around this transverse axis, which is strictly less than 360°, and in particular is less than 320° or 300°.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: January 15, 2013
    Assignee: Valeo Vision
    Inventor: Antoine De Lamberterie
  • Patent number: 8346048
    Abstract: A illumination device comprises a light guide having a first end for receiving light and configured to support propagation of light along the length of the light guide. A turning microstructure is disposed on a first side of the light guide configured to turn light incident on the first side and to direct the light out a second opposite side of the light guide, wherein the turning microstructure comprises a plurality of indentations. A cover is physically coupled to the light guide and disposed over the turning microstructure. An interlayer is between the cover and the light guide, wherein the interlayer physically couples the cover to the light guide. A plurality of open regions is between the interlayer and the plurality of indentations. Various embodiments include methods of coupling the cover to the light guide while preserving open regions between the cover and plurality of indentations.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: January 1, 2013
    Assignee: Qualcomm Mems Technologies, Inc.
    Inventors: Ion Bita, Gang Xu, Kollengode S. Narayanan, Russell W. Gruhlke, Marek Mienko, Lai Wang
  • Publication number: 20120314444
    Abstract: An optical fiber display apparatus includes a housing, a holding member moveable about a pivot point axis functionally connected to the housing, and one or more fiber optic strands having a first end attached to the holding member and a second end unrestrained. The fiber optic strands define a longitudinal axis, and the pivot point axis of the holding member is non-parallel to the fiber strands axis such that movement of the holding member about the pivot point axis causes the second unrestrained end of the fiber strand to move back and forth along a line that is non-parallel to the longitudinal fiber strand axis. A light source illuminates the first end of the fiber strands, so that light emits from the second end of the fiber strands.
    Type: Application
    Filed: December 15, 2011
    Publication date: December 13, 2012
    Inventor: Thomas Mark Spangler
  • Patent number: 8317384
    Abstract: A light guide includes a light interface surface, top and bottom surfaces, a surface feature pattern, and a cut line. The light interface surface receives light into the light guide from a light source. The light received through the light interface surface reflects according to total internal reflection (TIR) within the light guide between portions of the top and bottom surfaces. The surface feature pattern disrupts the TIR and scatters at least some of the light outside of at least one surface of the top and bottom surfaces. The cut line redirects at least some of the light from a first direction to a second direction within the light guide. The first direction is a direction other than towards the surface feature pattern, while the second direction is a direction substantially towards the surface feature pattern. The light guide may back-illuminate an optical keypad with a plurality of push buttons.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: November 27, 2012
    Assignee: Intellectual Discovery Co., Ltd.
    Inventors: Muh Fong Chung, Sian Tatt Lee, Choon Guan Ko, Fook Chuin Ng
  • Patent number: 8308330
    Abstract: An apparatus for optical examination of documents. The apparatus includes a light source, a plurality of panels which are exchangeable with each other, a viewing unit having a window formed by at least one of the plurality of exchangeable panels through which window light emitted from the light source exits for examination of documents by an observer. Further included is a coupling unit configured to supply the light emitted from the light source into the viewing unit. The light source and the viewing unit are coupled together by a light guide and the light guide is adapted to supply the light from the light source to the coupling unit. At least one of the plurality of exchangeable panels is a fluorescent panel including a fluorescent substance. The fluorescent panel is fluorescent in the yellow-red-infrared wavelength range when being illuminated with light in the ultraviolet-blue-green wavelength range.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: November 13, 2012
    Inventor: Günther Nath
  • Patent number: 8269914
    Abstract: A liquid crystal display module displays an image on a liquid crystal panel. The liquid crystal module includes a liquid crystal panel and a backlight assembly. The backlight assembly includes a reflecting sheet having a raised portion that receives a light source and supports a diffusing sheet and/or optical sheet positioned between the liquid crystal panel and the light source.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: September 18, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Dong-Im Huo, Jong-Kook Lee
  • Patent number: 8246229
    Abstract: A master/museum picture frame containing integral lighting and a light director (FIG. 1) in accordance with Snell's law of Total Internal Reflection and Refraction By a Prism. Said lights, wired in series with a resistance wire parallel to the filament on the lights dumet, in accordance with the Shunt Theory, such that if one light burns out the remainder remain lighted, to present the artwork in the most favorable manner for the longest period of time when viewed in a depreciating environment. The master/museum frame is interchangeable, both forward and backward, with the capability of being used as a lighted frame or an unlighted frame by substituting a spacer in place of the light director and vice versa as shown in FIG. 3 and FIG. 4.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: August 21, 2012
    Inventor: Stephen Hilary Silder
  • Patent number: 8228463
    Abstract: A passive daylight-coupled display having an LCD panel, a diffuser, a turning film behind the LCD panel, and a curved reflector behind the turning film. For passive backlighting, the diffuser transmits daylight to the reflector, which reflects the daylight to the LCD panel through the turning film and provides for substantially uniform distribution of the daylight on the LCD panel for backlighting it. The turning film has prisms with chaos for an improved viewer experience.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: July 24, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Rolf W. Biernath, Jennifer R. Yi, Gilles J. Benoit, Yufeng Liu, Michael F. Weber
  • Patent number: 8210728
    Abstract: An illumination apparatus that includes a plurality of LEDs of different center emission wavelengths, a photodetector, a path sharing device for introducing light emitted from the plurality of LEDs into the common optical path, a light-introducing device located on the common optical path to introduce part of the light emitted from the plurality of LEDs passing through the common optical path into the photodetector, a feedback controller controlling turning-on states of the LEDs over preset states in accordance with the amount of light emitted from the plurality of LEDs detected by the photodetector, and an illumination light supplying device located on the common optical path to supply light which is emitted from the plurality of LEDs to pass through the common optical path and is not introduced into the photodetector through the light-introducing device, as illumination light for a cellular analysis.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: July 3, 2012
    Assignee: Olympus Corporation
    Inventors: Ryo Tsutsui, Yuichiro Matsuo, Yoshihiro Shimada, Mitsuo Harada
  • Patent number: 8206017
    Abstract: An illumination device (11) for a motor vehicle includes a transparent light guide (13). At least a first decoupling element (33) is formed into the light guide (13). At least one reflector (35) is assigned to the first decoupling element (33) for reflection of light coupled-out by the first decoupling element (33) and aligned and formed in such a way that at least a portion of the light reflected by the reflector (35) irradiates the light guide (13). At least one second decoupling element (37) is formed in the light guide (13) for coupling-out of light from the light guide (13) and aligned and formed in such a way that light coupled-out by the second decoupling element (37) ultimately exits the light guide (13).
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: June 26, 2012
    Assignee: Automotive Lighting Reutlingen GmbH
    Inventor: Hubert Zwick
  • Publication number: 20120134171
    Abstract: A light source for a crystal lamp has a light guide pillar, a light-emitting element, and a linear micro structure. The light guide pillar has a top surface, a bottom surface and a side surface, and the light-emitting element is disposed next to the bottom surface. The linear micro structure is formed on and surrounds the side surface, and the emitting light beams of the light-emitting element are reflected by or refracted through the linear micro structure to allow the linear micro structure to function as a thin-lined light source surrounding the light guide pillar.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 31, 2012
    Inventors: Zhi-Ting YE, Kuo-Jui Huang
  • Patent number: 8186863
    Abstract: The present invention discloses a linear light source having light guide with tapered saw tooth structures for Charge Coupling Device Module (CCDM). The linear light source comprises a light guide and at least two Light Emitting Diodes (LED's). The light guide includes two incident surfaces, a reflective surface, two refractive surfaces and an ejective surface. The reflective surface has a tapered saw tooth structure; the LEDs are disposed at two ends of the light guide. Upon emission of light from the LEDs, light enters into the light guide, reflected by the tapered saw tooth structures, and then ejected from the ejective surface. It is possible to form a U-shaped lambert distribution in the sub scanning direction, thereby generating the complementary effect for the pickup lens and the CCD image sensor of CCDM, as well as to create a linearly converged lambert distribution in the main scanning direction.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: May 29, 2012
    Assignee: E-Pin Optical Industry Co., Ltd.
    Inventors: Ching-Yuan Lin, Yi-Min Chen, San-Woei Shyu
  • Patent number: 8184021
    Abstract: A keyboard with illuminating architecture includes a keyboard portion and a substrate carrying the keyboard portion, wherein the keyboard portion includes a plurality of pressing elements for receiving a pressing force from the user and inter-dependent mechanisms respectively under a force receiving surface of each pressing element for providing a moving stroke of the pressing element following the force direction, and the substrate has an assembling portion for assembling with the other end of the inter-dependent mechanism. Moreover, the surface of the substrate has at least one light guiding groove, which forms a light channel for transmitting light, and at least one inner sidewall of the light guiding groove is a light reflecting surface, so that the light in the light guiding groove is reflected by the light reflecting surface to the keyboard portion, thereby providing the pressing elements the brightness, and reducing whole keyboard thickness and thinning.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: May 22, 2012
    Assignee: Zippy Technology Corp.
    Inventor: Chin-Wen Chou
  • Publication number: 20120113670
    Abstract: A device for transilluminating a film has a light exit emitting with a light beam for transilluminating the film, a transillumination region for guiding the film such that the light beam can transilluminate the film in the transillumination region, a film feed for feeding the film to the transillumination region and a film removal for removing the film from the transillumination region. The device moreover includes a hollow chamber with a diffusely reflecting inner surface and a light entrance opening receiving light from a light source and an exit opening, as well as an optical guide having a beam entrance end and a beam exit end. The beam entrance end is arranged such that light exiting from the exit opening of the hollow chamber at least partially enters through the beam entrance end into the optical guide.
    Type: Application
    Filed: April 15, 2010
    Publication date: May 10, 2012
    Applicant: DFT Digital Film Technology Holding GmbH
    Inventors: Rudolf Wulf, Klaus Anderle, Markus Hasenzahl
  • Publication number: 20120063161
    Abstract: A light source device includes a single optical waveguide, a plurality of optical sub-assemblies, and an assembly holder. The optical waveguide includes a core area extending along a predetermined axis, a cladding area covering a periphery of the core area, and a first end face extending along a plane intersecting the predetermined axis. The assembly holder has an inner surface supporting the optical sub-assemblies so that the optical sub-assemblies are respectively arranged on a plurality of reference lines and optically coupled to the first end face of the optical waveguide. Each optical sub-assembly includes a semiconductor light-emitting element having a light-emitting surface optically coupled to the first end face of the optical waveguide, and a support member on which the semiconductor light-emitting element is mounted. The reference lines extend in different directions from one point on a predetermined axis of the core area to the cladding area.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 15, 2012
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hiromi NAKANISHI, Michitomo IIYAMA
  • Patent number: 8070327
    Abstract: Display lamp includes a base and a cover having a lower face. A side is provided between the cover and base, and the side, cover, and base define a display volume. A light source on the base directs light at a reflector on lower face of cover, and reflector reflects light from light source downwardly away in a diffuse manner within the display volume. There may be a light housing covering the light source and an oculus in an upper portion of light housing configured for directing light at the reflector. A light guide may be provided adjacent the light source for collimating light emitted from the light source into a column of light directed at the reflector. There may be a support between the cover and base for supporting an article to be displayed in the display volume, and illuminated by reflected light from the reflector.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: December 6, 2011
    Inventor: David R. Gallagher
  • Patent number: 8070343
    Abstract: A light pipe is configured to provide a wide effective angle of illumination while simultaneously providing a substantially uniform distribution of light along a length of the light pipe. One or more reflective surfaces not aligned with an inner surface are disposed such that when at least one reflective surface is illuminated, light is emitted from the light pipe at one or more specified angles of light emission. A plurality of reflection points are formed on the inner surface to cause the specified angles when at least one of the reflective surfaces is illuminated. A light pipe is also provided having one or more exterior protrusions configured to function as a secondary light source. A second portion of an outer surface of the light pipe has a radius of curvature which differs from the radius of curvature of the first portion of the outer surface.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: December 6, 2011
    Assignee: Tyco Electronics Canada ULC
    Inventors: Kazuhiro Goto, Dragos Luca, Salvatore Alesio
  • Publication number: 20110292673
    Abstract: A display and illumination system includes a light source section accommodating a light source; an optical fiber for transmitting light from the light source; a display illumination unit radiating light transmitted by the optical fiber; a light source module installed in the light source section, accommodating the light source, and optically connected to the optical fiber; a plug electrode installed in the light source module and supplying electric power to the light source; a convex portion on a first side of the light source module, engaging the optical fiber, and extracting light from the light source; and a concave portion located opposite the first side of the light source module and urging the convex portion toward the optical fiber with a constant force.
    Type: Application
    Filed: April 11, 2011
    Publication date: December 1, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Aono, Akihiro Shima
  • Patent number: 8066417
    Abstract: Different arrangements for improving the coupling-in efficiency between an LED assembly and a light guide are disclosed. In a first arrangement, a substantially planar end of a light guide is seated on a perimeter wall of a support that encloses a LED assembly, and a reflecting surface enhances coupling efficiency of a light guide. Alternative arrangements use a separate coupler disposed between the LED assembly and the light guide, which coupler has a paraboloid or aspheroid conformation to develop substantially collimated light that is directed into the light guide. The cavity around the LED assembly and within the coupler, may be air or a material having an index of refraction that closely matches the index of refraction of the light guide material.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: November 29, 2011
    Assignee: General Electric Company
    Inventors: Laszlo Balazs, Istvan Maros, Istvan Peter Bakk
  • Publication number: 20110286234
    Abstract: A method of manufacturing a light emitting device includes separating a plurality of regions in a film with a thickness not greater than 0.5 millimeters to form a plurality of legs continuous with a body of film, folding the plurality of legs such that each leg terminates in a stack of bounding edges, disposing the stack of bounding edges proximate at least one light source such that light from the at least one light source propagates through the legs and the body by total internal reflection, and treating the film to form a plurality of light scattering features therein such that frustrated totally internally reflected light exits the light emitting device at a visible light emitting area and the light emitting area is at most barely visible when not illuminated by the at least one light source.
    Type: Application
    Filed: August 16, 2011
    Publication date: November 24, 2011
    Inventor: ANTHONY J. NICHOL
  • Patent number: 8052314
    Abstract: Disclosed is an optical fiber illumination device including a light source for outputting light; a coupler for converging the light input from the light source through multiple reflection; and an optical fiber to which the converged light is input.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: November 8, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sun-Tae Jung, Joo-Hoon Lee
  • Patent number: 8033674
    Abstract: The present invention provides a polarization-sensitive light homogenizer and a backlight and display using the same. The homogenizer improves the spatial luminance and color uniformity, increases the luminance in a direction normal to the homogenizer and provides increased luminance through polarized light recycling within the light homogenizer and backlight. In one embodiment, the homogenizer includes a polarization-sensitive anisotropic light-scattering (PDALS) region, a non-polarization-sensitive anisotropic light-scattering region, and a substantially non-scattering region. In a further embodiment, the non-scattering region is birefringent. The spatially non-uniform incident light flux from a backlight including one or more non-extended light emitting sources is scattered efficiently by the NPDASL region and is incident on the PDALS region which backscatters light orthogonal to the polarization state desired for efficient illumination of a liquid crystal display panel.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: October 11, 2011
    Assignee: Fusion Optix, Inc.
    Inventors: Zane Coleman, Terence Yeo, Timothy Kelly
  • Publication number: 20110222309
    Abstract: Provided are an optical element and a light-emitting device with which the illuminated area can be expanded in spite of a small light-emitting area, and that also enable the device to be downsize. The light-emitting device is equipped with sheet-like light-guide sections (a first light-guide section and a second light-guiding section) for guiding light, and a light-emitting member for emitting light. The second light-guide section has a prism section with a saw tooth-like cross-section for changing the direction of the light guided to one of its surfaces. In the prism section, the angle of incidence at which parallel light guided to the second light guide section enters reflective surface of saw teeth at positions away from the LED is set to be greater than the angle of incidence (?) at which the light enters the reflective surface of the saw teeth at the side toward the LED.
    Type: Application
    Filed: November 17, 2009
    Publication date: September 15, 2011
    Applicants: NITTOH KOGAKU K.K.,
    Inventor: Yoshinori Shinohara
  • Patent number: 8018551
    Abstract: A liquid crystal display module displays an image on a liquid crystal panel. The liquid crystal module includes a liquid crystal panel and a backlight assembly. The backlight assembly includes a reflecting sheet having a raised portion that receives a light source and supports a diffusing sheet and/or optical sheet positioned between the liquid crystal panel and the light source.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: September 13, 2011
    Assignee: LG Display Co. Ltd.
    Inventors: Dong-Im Huo, Jong-Kook Lee
  • Patent number: 8016455
    Abstract: An optical device for creating an illumination window includes radiation sources and an optical element. The optical element is arranged to create a substantially collimated radiation beam from radiation generated by the radiation sources, in which the radiation generated by the respective sources is substantially unmixed. The optical device further includes a first lens plate having first sub-lenses, in which each first sub-lens projects a part of the radiation beam at an illumination window, such that the projections of each first sub-lens at least partially overlap.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: September 13, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Elvira Johanna Maria Paulussen
  • Patent number: 8011810
    Abstract: A light integrator is provided, the light integrator comprising a body for integrating light, the body having a length and a light egress end. The light integrator further comprises a first light entrance device for accepting light from a first lamp into the body, the first light entrance device comprising a first light entrance face, the first light entrance device located distal the light egress end. The light integrator further comprises a second light entrance device for accepting light from a second lamp, the second light entrance device comprising a second light entrance face, the second light entrance device laterally displaced from the first light entrance device in a direction generally perpendicular to the first light entrance face, such that light from the first and second lamps independently enter the integrator via the first and second light entrance devices respectively, and exit the light egress end.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: September 6, 2011
    Assignee: Christie Digital Systems USA, Inc.
    Inventors: Joseph Ma, George P. Pinho
  • Patent number: 8007157
    Abstract: An exemplary light pipe includes a main pipe and branch pipes. The main pipe includes a light inputting segment, an end portion, and a light outputting segment between the light inputting segment and the end portion. The light inputting segment includes connecting openings defined therein. A distance between each connecting opening and the end portion of the main pipe is different from a distance between each other connecting opening and the end portion of the main pipe. The branch pipes connect with the light inputting segment at the respective connecting openings.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: August 30, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: I-Thun Lin
  • Publication number: 20110188010
    Abstract: An optical system includes a light source array, a dichroic mirror set, a light converting device and a light guide pipe. The light source array is used for emitting a first homogeneous light. The dichroic mirror set is disposed in a light path of the first homogeneous light and used for reflecting a part of the first homogeneous light to the light guide pipe, transmitting the remaining part of the first homogeneous light to the converting device. The light converting device is disposed in the transmitting light path of the dichroic mirror and used for transferring the first homogeneous light into a second, third homogeneous light. The dichroic mirror is further used for reflecting the second, third homogeneous light to the light guide pipe. The light guide pipe is used for mixing the first, second and third homogeneous light to obtain a white light.
    Type: Application
    Filed: March 28, 2010
    Publication date: August 4, 2011
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: MING-TE LIN, WEN-PIN YEH, CHUN-HSUN WANG
  • Patent number: 7980741
    Abstract: The invention relates to a light-conductor structure (13) for an automobile lighting device (11), with a coupling section (17) to couple light into the light-conductor structure, a curved reflecting surface (25) to reflect light beams (59) of the light coupled into the light-conductor structure via the coupling section, and at least one decoupling section (30, 45, 51) to decouple the light from the light-conductor structure (13). In order to achieve a light-conductor structure (13) in which fewer limitations to the determination of its geometric shape exist, or whose appearance may be more freely configured, it is proposed that the reflecting surface (25) of the light-conductor structure (13) is curved such that light reflected from the reflecting surface (25) strikes directly with no additional reflection either again onto the reflecting surface (25) or passes into the minimum of one decoupling section (30, 45, 51).
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: July 19, 2011
    Assignee: Automotive Lighting Reutlingen GmbH
    Inventor: Hubert Zwick
  • Patent number: 7949213
    Abstract: In various embodiments described herein, a display device includes a front illumination apparatus that comprises a first light guide disposed forward of an array of display elements, such as an array of interferometric modulators, to distribute light across the array of display elements. The light guide panel is edge illuminated by a light source positioned behind the array display elements. The light from such a light source is coupled to a second light guide disposed behind the array of display elements and positioned laterally with respect to the light source. The light in the second light guide is coupled into the first light guide using a small optical coupling element such as a turning mirror. In some embodiments the second light guide may comprise the backplate of the display device.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: May 24, 2011
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Marek Mienko, Gang Xu, Ion Bita, Russell Wayne Gruhlke, Alberto Emerico Brewer
  • Patent number: 7942558
    Abstract: Optical device and optical component part for the targeted reproduction of light emitted by LED light sources (6). The optical device comprises at least two component parts, a first optical component part (10) in the form of a solid waveguide and another component part for connection to the LED light source (6). In a system of Cartesian co-ordinates, the first optical component part (10) has a length in the y direction shorter than or equal to its length in the z direction and shorter than or equal to its length in the x direction. An envelope of the first optical component part (10) projected in an x-y plane forms essentially a rectangle. Proceeding from an x-y plane, the optical component part (10, 10?) tapers in the z direction to maximum ¼ of the largest width measured along y (By, max), with any design of the y-z flanks of the optical component part (10, 10?).
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: May 17, 2011
    Inventors: Frédéric Zweig, Thomas Bührer
  • Patent number: 7901124
    Abstract: A light guide member in which a light that has entered one major face from an illuminant is emitted from the other major face, includes a cut portion provided with a specified face inclined toward the other face at a section of one major face that faces the illuminant, and a reflecting portion, which reflects a light emitted from the illuminant, on the inclined face.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: March 8, 2011
    Assignee: Showa Denko K.K.
    Inventors: Shuji Gomi, Kenji Shinozaki, Shuichi Naijo, Takeo Watanabe
  • Patent number: 7891855
    Abstract: A light guiding structure for connector includes a light-guiding unit having more than one light guiding post, and each of the light guiding posts having a light-input end and a light-output end; and a shielding unit enclosing an outer side of the light guiding posts. When the light guiding structure is mounted on a connector case for guiding light, light beams propagating in different light guiding posts are isolated from one another by the shielding unit. Therefore, light beams can be stably and exactly guided by the light guiding posts without light loss and mutual interference to thereby avoid error determination by a user.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: February 22, 2011
    Assignee: All Best Electronics Co., Ltd.
    Inventor: Haven Yang
  • Patent number: 7883252
    Abstract: A wall-mounted display device, which uses a light guiding panel for an LED light source includes display body 1 with an optical panel 11 housed in a box-like optical diffusion case 15 with flanges 14 formed on the periphery of a substrate 13. A reflection case 12 fits in the optical diffusion case 15, which has a U-shaped cross section and flanges 14 formed on the upper and lower ends of the substrate 16. LED light sources 18 are respectively disposed on the right and left flanges 14 of the reflection case 12 to supply incident light into the light guiding panel 11. Frame members 22, each having a U-shaped cross section, fit in the upper and lower ends of the display body 1, respectively. Each U-shaped frame member is securely fixed with a screw 21 inserted through the rear surface of the frame member, in such a way that the screw 21 is not exposed from the front side of the display body.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: February 8, 2011
    Inventors: Hirokazu Matsui, Shinzo Murase
  • Patent number: 7874690
    Abstract: An oven lighting fixture includes an LED assembly or assemblies optically coupled with an optical guide member. The lighting fixture also includes a mounting bracket and a pair of electrical leadwires to connect the LED lighting fixture to an external voltage source. The LED assembly has an LED attached to a printed circuit board containing ancillary circuitry for powering the LED, and a heat sink for removing heat from the LED. The mounting bracket is attachable to a door of the oven cavity to support the LED lighting fixture adjacent to a sidelight window. The mounting bracket has a slot adjacent to the window for transmitting light from the LED through the light guide and into the oven cavity. Positioning the lighting fixture outside of the oven cavity and adjacent to the sidelight window permits the LED to operate within required temperature limits.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: January 25, 2011
    Assignee: Tyco Electronics Corporation
    Inventors: Ronald Martin Weber, III, Charles Raymond Gingrich, III
  • Patent number: 7866867
    Abstract: A backlighting optical fiber consists essentially of an optical fiber with an axially recess disposed along the inner wall; a reflector set into said axially recess, said reflector includes a reflecting surface disposed on the inner side of said reflector, to reflect the incident light toward the opposite direction of said reflector and emitting outwardly. A backlight module formed therefrom comprises a plurality of said optical fibers parallel arranged on a plane surface of a substrate and a LCD display device includes said backlight module and a LCD display.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: January 11, 2011
    Assignee: Taiwan Plastic Optical Fiber Co., Ltd.
    Inventor: Chu-Yih Yu
  • Patent number: 7850339
    Abstract: A display includes a substrate having front and rear sides and defining one or more optical paths. A light source corresponding to each optical path is associated with the rear side of the substrate. Light propagates from the light source to the front side of the substrate through the corresponding optical path. Offsetting the light source from the centerline of the optical path improves light diffusion by promoting light reflection off the sides of the optical path. Multiple light sources of different colors can be associated with each optical path to provide for variable color output from each optical path at the front side of the substrate.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: December 14, 2010
    Assignee: Touchsensor Technologies, LLC
    Inventors: Bahar N. Wadia, Donald Charles Mueller
  • Patent number: 7815351
    Abstract: The present invention is a light guide array constructed and arranged to be deployed with a two dimensional LED array such that the LED array establishes new focal points for the light emitted from each of a plurality of LEDs, which focal points are displaced from an original focal point of each LED. The light guide array is further configurable in fabrication to selectively control properties of the light emitted from the vehicle lamp having the light guide array including, direction, angle, luminance intensity and luminance pattern. In one embodiment, the light guide array directs light in a primary direction that is non-parallel with the primary direction of the light generated by the two dimensional LED array alone.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: October 19, 2010
    Assignee: Hella KG Hueck and Co.
    Inventors: Sandeep Saxena, Nadezhda Aleksandrovna Zelikovskaya
  • Patent number: RE43959
    Abstract: A multi-lamp arrangement for optical systems comprising two lamps or more (10, 15) and a collective light guide (58), where each lamp is positioned such as to transmit light (20) into respective light guides (36, 46) that are both optically connected to the collective light guide (58). In one embodiment, one of the lamps is optically connected to the collective light guide by means of a mirror (38)-and-prism (40) arrangement and an intermediate light guide (30) and an intermediate mirror (32)-and-prism (34) arrangement. The invention also comprises an augmented color modulator (62) with a number of color fields, where the number of identical color fields are equal to the number of lamps. The invented multi-lamp system will produce a flux level that is equal to or better than known systems but with fewer lamps, thus yielding reduced material cost, manufaturing cost and operating costs, reduced power consumption and reduced product temeperature.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: February 5, 2013
    Assignee: projectiondesign as
    Inventors: Odd Ragnar Andersen, Kjell E. Olsen