Including Curved Modifying Surface Patents (Class 362/217.04)
  • Patent number: 8757834
    Abstract: In a variable shaped lamp shade of an LED lamp, the lamp shade is made of a translucent material matched with an LED lamp strip and a lamp holder and includes at least one strip-shaped optical refraction unit having an external refractive surface, an internal refractive surface corresponding to the external refractive surface, and an assembling structure for matching the lamp holder. The external refractive surface or internal refractive surface is a curved surface without an inflection point and the curved surface has a constant or gradually changing curvature; and a non-curved surface is formed on the other side. The variable shaped lamp overcomes the problems of conventional LED lamp strips having a low illumination and a non-uniform illumination caused by a direct projection or an installation of a conventional lamp shade, and a low light utility caused by a too-large illumination range.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: June 24, 2014
    Inventors: Chih-Yang Chang, Hsing-Kuei Liu
  • Patent number: 8757835
    Abstract: In a variable shaped lamp shade of an LED lamp, the lamp shade is made of a translucent material matched with an LED lamp strip and a lamp holder and includes at least one strip-shaped optical refraction unit having an external refractive surface, an internal refractive surface corresponding to the external refractive surface, and an assembling structure for matching the lamp holder. The external refractive surface or internal refractive surface is a curved surface without an inflection point and the curved surface has a constant or gradually changing curvature; and a non-curved surface is formed on the other side. The variable shaped lamp overcomes the problems of conventional LED lamp strips having a low illumination and a non-uniform illumination caused by a direct projection or an installation of a conventional lamp shade, and a low light utility caused by a too-large illumination range.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: June 24, 2014
    Inventors: Chih-Yang Chang, Hsing-Kuei Liu
  • Patent number: 8550668
    Abstract: A light control member includes a plate-like member including a first flat surface and a second surface facing the first surface. The second surface has at least three prism line groups, each group including a plurality of substantially parallel linear prisms. Each one of the linear prisms of one prism line group intersects the linear prisms of other prism line groups at one intersection point, and each linear prism is formed into a convex shape having a substantially curved outer edge when viewed along its longitudinal direction.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: October 8, 2013
    Assignee: Sony Corporation
    Inventors: Shingo Ohkawa, Atsushi Seki, Kotaro Shima
  • Patent number: 8459828
    Abstract: A backlight assembly includes a lamp unit, a covering member, a panel guiding member and a lamp supporting member. The lamp unit has a first electrode and a second electrode disposed at a first side of the lamp unit and a curved portion disposed at a second side of the lamp unit that is opposite to the first side. The covering member covers at least one of a first region corresponding to the first and second electrodes and a second region corresponding to the curved portion. The panel guiding member is configured to support a display panel that displays images using light generated by the lamp unit. The lamp supporting member is configured to retain the lamp unit. Therefore, a number of inverters may be reduced, thereby lowering cost and time of manufacturing the backlight assembly. Furthermore, reliability of the backlight assembly may be enhanced.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: June 11, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Min Kang, Jong-Dae Park
  • Patent number: 8403522
    Abstract: An exemplary LED lamp includes a heat dissipation module, a light source mounted on the heat dissipation module, a cover engaging the heat dissipation module and covering the light source, a reflective layer mounted on the cover, and two connectors secured at two corresponding ends of the cover and the heat dissipation module. The cover has an inner surface and a convex outer surface. The inner surface includes a first concave surface and two second concave surfaces at lateral sides of the first concave surface. The second concave surfaces face the LEDs and configured as light incident surfaces; light emitted by the LEDs incidents onto the second concave surfaces and travels through the cover to an outside for lightening. A part of the light is reflected by the reflective layer before travelling to the outside.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: March 26, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Jen-Tsorng Chang
  • Patent number: 8398260
    Abstract: A heat-dissipation structure of an LED lamp is disclosed. The LED lamp includes a metal profile, a lampshade attached to the metal profile from bottom, a lamp head mounted around the combined lampshade and metal profile, a printed circuit board set in receiving recesses bilaterally formed below the metal profile, and LEDs provided on a surface of the printed circuit board facing the lampshade. The heat-dissipation structure is characterized in a downward-bending accurate profile of the metal profile being formed between the receiving recesses, and two pads being each positioned between the flanges and the printed circuit board, the two pads serving to prop two lateral sides of the printed circuit board upward such that the printed circuit board fits the accurate profile and closely contacts the metal profile with increased contacting area. Thereby, the printed circuit board can have heat accumulated in operation rapidly dissipated from the metal profile.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: March 19, 2013
    Assignee: Fong Kai USA, Inc.
    Inventor: Jia-Hua Fan
  • Patent number: 8388180
    Abstract: In a variable shaped lamp shade of an LED lamp, the lamp shade is made of a translucent material matched with an LED lamp strip and a lamp holder and includes at least one strip-shaped optical refraction unit having an external refractive surface, an internal refractive surface corresponding to the external refractive surface, and an assembling structure for matching the lamp holder. The external refractive surface or internal refractive surface is a curved surface without an inflection point and the curved surface has a constant or gradually changing curvature; and a non-curved surface is formed on the other side. The variable shaped lamp overcomes the problems of conventional LED lamp strips having a low illumination and a non-uniform illumination caused by a direct projection or an installation of a conventional lamp shade, and a low light utility caused by a too-large illumination range.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: March 5, 2013
    Inventors: Chih-Yang Chang, Hsing-Kuei Liu
  • Patent number: 8337044
    Abstract: An elongated luminaire for illuminating objects in front of the luminaire, comprising a plurality of side emitting LEDs (1) in only one straight array mounted on an elongated base plate (2). The base plate (2) carries two elongated reflectors (3) extending on either side of the array of LEDs (1) and parallel to the array of LEDs (1). Each reflector (3) has a reflecting surface (4) directed towards the array of LEDs (1).
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: December 25, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Teunis Willem Tukker, Denis Joseph Carel Van Oers, Wilhelmus Adrianus Gerardus Timmers, Edwin Van Lier
  • Patent number: 8337041
    Abstract: Surface mounted lighting fixtures having a troffer channel and a frame that extends around the troffer channel. The troffer channel includes a top wall and side walls. To impart a “back” to the fixture, the troffer channel is positioned in the frame so that the upper surface of the lighting fixture is defined by the top wall of the troffer channel and so that the fixture is mounted to a ceiling via the top wall of the troffer channel. The side walls of the troffer channel are preferably angled relative to the top wall to reflect light out of the fixture as desired. Tie brackets, lamp holder brackets, electrical components, and traditional louvers and lensed door components may be supported by the lighting fixture. An installation bracket may be provided to facilitate installation of the lighting fixture.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: December 25, 2012
    Assignee: ABL IP Holding LLC
    Inventors: Stephen Barry McCane, Stephen Haight Lydecker, John T. Mayfield, III, Russell Vern Rouse
  • Patent number: 8104919
    Abstract: An LED lamp comprises a heat sink, a plurality of LED modules respectively disposed at two opposite sides of the heat sink, a casing attached to a front of the heat sink, two envelopes respectively located at the two opposite lateral sides of the heat sink and covering the LED modules therein and a holder connecting the casing for holding the LED lamp in position.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: January 31, 2012
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Shih-Hsun Wung, Yong-Dong Chen, Wen Xu, Xin-Jian Xiao
  • Patent number: 8066411
    Abstract: An LED lighting tube having a first segment, a second segment, and a rotating connector between the segments. Each segment has an elongated cylindrical housing, an aperture in the sidewall of the cylindrical housing, a reflector centered within the aperture, a circuit board within the cylindrical housing, and a rotatable electrical coupling connected to an outer end of the cylindrical housing. The circuit board has an LED that aligns with the aperture. The rotatable electrical coupling has a limiter insert that provides a rotative stop, a collet that at least partially surrounds the limiter insert and is rotatable about the limiter insert, and an interface connector secured to the limiter insert and in electrical communication with the circuit board. The rotatable electrical coupling permits the LED lighting tube to connect to a light fixture while also permitting the cylindrical housing to rotate relative to the light fixture.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: November 29, 2011
    Assignee: Reled Systems LLC
    Inventors: Dan Barton, Brad Barton
  • Patent number: 8002448
    Abstract: The table lamp contains a lamp base and an extension tube plugged vertically into the lamp base. A curved transparent light tube is attached along its entire length to a parallel and also curved back cover. The combination is joined to a top end of the extension tube. Two light generation assemblies are provided at the two ends of the light tube, respectively, each sequentially composed of a lens, a lens ring, a light emitting diode, a power circuit, a heat dissipation plate, and a heat dissipation element. The light from the light emitting diodes is projected into the light tube and, with a reflection layer along the inner wall of the light tube, the light is uniformly reflected towards the area beneath the table lamp.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: August 23, 2011
    Assignee: Eiso Enterprise Co., Ltd.
    Inventor: Cheng-Tang Chen
  • Patent number: 7967477
    Abstract: An optical system includes a cylindrical side emitter lens, a reflector and a cylindrical Fresnel lens to produce a substantially uniformly illuminated exit plane with well collimated light in the forward direction. The cylindrical side emitter lens redirects light from a light source, such as a number of light emitting diodes placed in a straight line, into side emitted light along an optical axis that is parallel with the exit plane. The reflector may be a stepped multi-focal length reflector that includes multiple reflector surfaces with different focal lengths based on the surfaces distance to the light source and height to redirect light from the cylindrical side emitter lens to illuminate the exit plane and collimate the light along one axis in the forward direction. The cylindrical Fresnel lens is used to collimate the light along an orthogonal axis in the forward direction.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: June 28, 2011
    Assignee: Philips Lumileds Lighting Company LLC
    Inventors: Pascal J. H. Bloemen, Emanuel N. H. J. Stassar
  • Patent number: 7918589
    Abstract: A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned and a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies the light source and such that substantially all of the light emitted from the light source passes through the lens assembly. In one example, the lens includes a curved prismatic surface that can be oriented toward or away from the underlying light source.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: April 5, 2011
    Assignee: ABL IP Holding LLC
    Inventors: John T. Mayfield, III, Gary D. Trott, Carl T. Gould, Christopher L. Sharp
  • Patent number: 7914170
    Abstract: Disclosed is a flatly designed interior light which is essentially characterized by a centrally arranged hollow profiled support (1) that is disposed between two final parts (15) and is provided with an interior receiving space (17) and exterior reflective surfaces (18,19,20,21) for two fluorescent lamps (2, 3) which adjoin the profiled support (1) and run parallel thereto, and light guiding chambers (6, 7) that are placed on both sides of the profiled support (1), extend to the lateral border of the light, and are closed by the light emission surface (13) facing the room. Preferably, the height of the light, which reaches a maximum in the region of the central profiled support (1), decreases continuously in the direction of the edges (11) of the light until reaching approximately the thickness of the components (8, 9, 10) that form the light emission surface (13) facing the room.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: March 29, 2011
    Inventor: Hartmut S. Engel
  • Patent number: 7857471
    Abstract: The optical sheet includes a first lens sheet having a plurality of first three-dimensional structures arrayed to extend to one surface thereof, and a reflective polarizer sheet for transmitting either one of p-polarization component and s-polarization component of incident light and reflecting the other of p-polarization component and s-polarization component of the incident light. Head portions of the first three-dimensional structures are bonded to the reflective polarizer sheet.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: December 28, 2010
    Assignee: Sony Corporation
    Inventors: Eiji Ohta, Shigehiro Yamakita, Makoto Aoki, Toru Abiko
  • Patent number: 7780312
    Abstract: A backlight assembly for a liquid crystal display device includes a bottom frame having an inner surface, printed circuit boards on the inner surface, and a plurality of light emitting diodes in rectangular-shaped clusters on each of the printed circuit boards, each of the light emitting diode clusters includes four light emitting diodes.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: August 24, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Gil-Won Han, Hee-Jung Hong, Moo-Jong Lim, Ju-Young Bang, Jong-Hyun Choi