With Complex Surface Patents (Class 362/309)
  • Patent number: 7621657
    Abstract: Light from light emitting element enters into a flux control member through a recess on an inner face of the light flux control member, being emitted from an emission control face (outer face). At least so far as light falls within a half-intensity-angular-range, the light satisfies Condition 1 ((?5/?1)>1 except for light in the vicinity of a normal direction of the emission control face) and Condition 2 (Value of ?5/?1>1 gets smaller gradually with increasing of ?1). It is noted that ?1, ?5 are angles made at being inner-incident to the emission control face and at being emitting from the same, respectively. The emission control face has a planar outline shape which is anisotropic around optical axis L, thereby causing value of ?5 /?1 to have a change depending on direction angle ? around optical axis L, with the result that highly uniform light is supplied to a required anisotropic irradiation range.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: November 24, 2009
    Assignee: Enplas Corporation
    Inventor: Shingo Ohkawa
  • Patent number: 7618179
    Abstract: An optical member enables a display apparatus to be improved in visibility of its display screen as viewed from a plurality of predetermined directions other than the directly forward direction. The optical member includes a lenticular lens member (3) having a plurality of convex lenses (2) and a light-reflecting layer (5) disposed on the back surface of the lenticular lens member. The light-reflecting layer (5) is provided with optical windows (6) each at a position corresponding to a midpoint between the apexes of mutually adjacent convex lenses. Light emitted from a planar light source, passed through each optical window (6), and configured to enter the mutually adjacent convex lenses (2) corresponding to the optical window is directed in mutually different directions by the mutually adjacent convex lenses, respectively.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: November 17, 2009
    Assignee: Citizen Electronics Co., Ltd.
    Inventor: Junji Miyashita
  • Patent number: 7607787
    Abstract: A light source unit which is reduced in size while securing a certain quantity of light by increasing the utilization efficiency of light and a projector system utilizing the light source unit. The light source unit includes a reflector whose internal surface is planished to provide a mirror reflection effect and which is formed with a lamp accommodation opening and a light emitting opening, a light source including a bulb which radiates light and a lamp comprising an electrode introducing portion that guides electrodes into the bulb, and a condenser which lies on an optical axis of the light radiated from the lamp and which is adapted to gather the light that is radiated from the lamp and that is reflected on the reflector.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: October 27, 2009
    Assignee: Casio Computer Co., Ltd.
    Inventor: Yukio Suzuki
  • Patent number: 7607810
    Abstract: A compact vehicle signalling light having a multi-reflector concave mirror which provides maximum light yield. The mirror includes a first reflector which is convergent and enveloping with respect to the light source and a second reflector formed near the apex of the mirror which reflects light rays passing around the light source without interfering with it. The vehicle light further includes a lens which cooperates with the reflectors to generate a light beam which complies with regulatory standards.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: October 27, 2009
    Assignee: Valeo Vision
    Inventor: Patrice Collot
  • Patent number: 7594744
    Abstract: A backlight module includes a light source and a light guide plate. The light guide plate includes a base plate and a reflecting film. The base plate has an upper surface on which a plurality of protrusions is formed, a curved bottom surface opposite to the upper surface, and a housing defined therein. The light source is accommodated in the housing. The reflecting film is plated on the curved bottom surface, for reflecting the light beams reaching the curved bottom surface to emit from the upper surface. The plurality of protrusions diffuses light beams.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: September 29, 2009
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chang-Chun Liu, Xiao-Lin Gan, Yu-Kuang Ho
  • Patent number: 7581860
    Abstract: A headlight having a multitude of headlight elements, which each have at least one semiconductor chip which emits electromagnetic radiation; a primary optics element, which reduces the divergence of the light which is incident through the light input; and at least one headlight element output, which emits a part of the headlight light from the headlight element. At least some of the headlight element outputs are arranged in at least two groups in such a way that the arrangement of at least one of the groups and/or at least overall arrangement of headlight element outputs of multiple groups corresponds essentially to a desired emission characteristic of the headlight, in that, in particular, it has a shape which corresponds essentially to the cross-sectional shape of a desired headlight beam, wherein the semiconductor chips which belong to the headlight element outputs of one group can each be operated independently of other semiconductor chips.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: September 1, 2009
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Georg Bogner, Stefan Grötsch, Joachim Reill
  • Patent number: 7575331
    Abstract: An example light guide assembly for illuminating a display of an instrument cluster includes a light receiving portion, a light propagating portion and a conical surface positioned between the light receiving portion and the light propagating portion. An exterior surface of the light propagating portion includes a plurality of lobes that uniformly illuminate the display as light propagates from the light receiving portion to the conical surface and through the light propagating portion.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: August 18, 2009
    Assignee: Continental Automotive Systems US, Inc.
    Inventors: Vyacheslav B. Birman, Werner Eckardt, Francisco Ramirez-Aldana
  • Patent number: 7575343
    Abstract: A PAR lamp (10) has a body (12) with an internal reflector surface (14) disposed about a longitudinal axis (16). A cavity (18) is provided at one end (20) of the body (12) and an arc discharge tube (22) that provides a substantially spherical light source is positioned in the cavity (18) and disposed on the longitudinal axis (16). A cover receiving opening (24) is provided at a second end (26) of the body and a cover (27) closes the cover receiving opening (24). A plurality of spiral facets (28) is formed on the internal reflector surface (14), the plurality of spiral facets (28) being sufficient in number to increase the maximum beam candle power and decrease the beam angle when compared to faceted lamps having a lesser number of facets. The number of facets is equal to or greater than 75 and preferably is 100.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: August 18, 2009
    Assignee: Osram Sylvania Inc.
    Inventors: Jason J. Li, Harold Rothwell, Jr., David M. Hrubowchak
  • Patent number: 7572034
    Abstract: The invention relates to a lighting assembly (10) comprising a housing (12), with one or more openings (26, 28, 30). A lighting means (40) is arranged in this housing emitting radiation through the openings (26, 28, 30) in angular ranges. Means (72) for shielding said radiation from a distant observer are provided. The invention comprises a first transparent cover (32; 72) for covering the openings of the housing. The cover has a micro structure profile (102) to shield unwanted radiation from selected portions of the angular ranges. A second transparent cover (70) protects the micro structure profile of the first cover.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: August 11, 2009
    Assignee: Semperlux Aktiengesellschaft
    Inventor: Udo Bansbach
  • Patent number: 7566152
    Abstract: A vehicular lamp unit including a flat-surfaced light source module and a projection lens that projects the image of light emitted from the light source module to the front as an inverted image. The light source module is comprised of a substrate and a light-emitting diode element disposed on the substrate and is formed therein with a subwavelength grating that reduces the reflection of light; and the formation density of the subwavelength grating is varied from position to position so as to vary the distribution of light emission intensity in the inverted image projected to the front.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: July 28, 2009
    Assignee: Koito Manufacturing Co., Ltd.
    Inventor: Hiroyuki Ishida
  • Patent number: 7563004
    Abstract: A light fixture 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.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: July 21, 2009
    Assignee: Acuity Brands, Inc.
    Inventors: Paul Kenneth Pickard, James Michael Lay, Doyle Scott Butler, Mark Campbell Logan, Leslie Charles King
  • Publication number: 20090180286
    Abstract: A lighting device can be configured to prevent light beams emitted from a light source from passing through an outer peripheral surface of a lens and from being projected outside of the illumination direction of the lighting device. In the lighting device, the light source can be disposed within a lighting chamber defined by a substrate and the lens. The lens can have a lens cut portion on the rear surface thereof. A reflection surface can be formed in the outer peripheral surface of the lens. The substrate can also have a reflecting portion configured to project light beams reflected by the outer peripheral surface of the lens in the illumination direction. The reflecting portion can be disposed on the front side of the substrate.
    Type: Application
    Filed: January 12, 2009
    Publication date: July 16, 2009
    Inventors: Shoichi BAMBA, Yosuke Mizuki
  • Patent number: 7556417
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of microstructures, and at least a lamp-receiving portion. The bottom surface is opposite to the light output surface. The microstructures are formed at the light output surface and the bottom surface respectively. Each microstructure has circular cross-sections taken along a plane parallel to its base surface thereof, a diameter of the circular cross-sections decreasing along a direction away from its base surface thereof. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: July 7, 2009
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 7540635
    Abstract: Disclosed herein is a Light Emitting Diode (LED) light source lens for emitting light in a lateral direction. The LED source lens includes an upper part, an upper part and a central part. The upper part includes an upper part reflecting surface bent symmetrically with respect to the central axis of the lens, and an upper part refracting surface extended from the end of the upper part reflecting surface parallel with the central axis. The central part includes a side surface extended from the lower end of the upper part refracting surface and bend inwards, and refracts or reflects light through the side surface. The lower part accommodates the LED light source, and includes an arch-shaped lower part refracting surface extended outwards from the lower end of the side surface of the central part. The light radiated from the LED light source is emitted perpendicular to the central axis.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: June 2, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Jong Kim, Bum Jin Kim, Ho Seop Jeong
  • Patent number: 7527410
    Abstract: An optical sheet includes a light scattering layer which scatters light made incident from an incident surface to an emission surface side and a plurality of light reflecting portions which reflect light scattered by the light scattering layer to the light scattering layer side. The optical sheet further includes a plurality of light transmitting portions constituted of an air layer for transmitting the scattered light to lenticular sheets. The plurality of the light transmitting portions are arranged along a longitudinal direction so as to form a convex portion with respect to a non-lens surface. Consequently, the light reflecting portions and the light transmitting portions are disposed alternately in stripes along an arrangement direction.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: May 5, 2009
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Kenichi Yoshizawa, Masaru Miyashita
  • Publication number: 20090109687
    Abstract: Improved lighting devices and methods are provided. In many embodiments, the devices and methods provide the capability to change a spot of light projected onto a target surface. In other embodiments, the devices and methods are fixed-focus. In one embodiment a lens can have a lens body with anterior and posterior surfaces. The anterior surface can be adapted to receive light from a light source. The posterior surface can have a central portion and a peripheral portion. Some of the light from the light source can pass through the lens body and exit the central portion of the posterior surface via refraction. Some of the light from the light source can pass through the lens body and exit the peripheral portion of the posterior surface via both refraction and reflection at various surfaces of the lens.
    Type: Application
    Filed: October 27, 2008
    Publication date: April 30, 2009
    Applicant: FRAEN CORPORATION
    Inventors: John R. Householder, Lawrence H. Boxler
  • Publication number: 20090091936
    Abstract: An improved focal point projection light signal device having a single point light source, a Fresnel lens, and a reflective beam concentrator having a spherical reflective surface located to the rear of the light source. The single point light source is positioned at the focal point of the Fresnel lens such that light emitted toward the Fresnel lens is refracted into a concentrated beam pattern that is projected from the front of the lens. The reflective surface of the beam concentrator is spherically concave and is positioned such that light emitted to the rear of the light bulb is reflected back through the lens focal point and out through the Fresnel lens. The overall diameter of the reflective beam concentrator is significantly smaller than the diameter of the Fresnel lens such that reflection of extraneous light sources that may produce phantom signal indications is minimized.
    Type: Application
    Filed: October 6, 2008
    Publication date: April 9, 2009
    Inventor: George H. Koester
  • Publication number: 20090086498
    Abstract: A device for creating a predetermined light output distribution having a substantially rectangular shape in angle space is provided having a lens with a revolved inner surface and a complex outer surface. The inner surface has a combination of reflective and refractive surface facets swept about an axis of revolution perpendicular to the optical axis of the device. The outer surface has a non-planar, non-circular, non-spherical shape. This outer surface generates an appropriate intensity distribution in a direction generally parallel to the major axis of the output rectangle and may also distribute energy generally parallelly to the minor axis of the output rectangle as well. The optical efficiency improvement in the design of this improved preferably LED-based product has several direct benefits including; increased reliability, lower operating temperature, reduced electrical requirements, greater product life and significantly reduced cost as compared to existing LED products.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 2, 2009
    Inventors: Patrick Jeffrey Condon, Mark Bryan Pruss
  • Patent number: 7510307
    Abstract: A luminaire adapted to being mounted at the top of a post having a design reducing maintenance costs. The luminaire has a capital with a globe mounted thereon forming an optical chamber, the capital has a front access area with a front access door hingedly attached thereto and optionally has a tool-less latch capable of holding the front access door over the front access area. The capital has an opening in a top portion thereof into the optical chamber, optionally, a relamping module extends from the inside of the capital, through the opening and up into a central portion of the optical chamber and has a lamp socket thereon. The relamping module may be removed without manipulation of the globe or globe roof. The luminaire may also have electrical gear within the capital attached to a tray wherein the tray is removably attached to an internal portion of the capital. The globe and globe roof may remain stationary during typical maintenance processes such as relamping or maintenance of electrical gear.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: March 31, 2009
    Assignee: Genlyte Thomas Group LLC
    Inventor: Eric Haddad
  • Patent number: 7506999
    Abstract: A lighting device can include a light source in line and a reflector behind the light source. In front of the light source, a transparent inner lens and a transparent outer lens can be provided with a gap formed therebetween. The shape of the lens can be defined by bending a plate member so as to have a projection portion that surrounds or opens towards the light source. The inner lens and the outer lens can each have a flat part at a position opposite the light source and in the illumination direction. When observed from different positions, the light source can appear as if it is displaced or deformed.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: March 24, 2009
    Assignee: Stanley Electric Co., Ltd.
    Inventors: Daisuke Uchida, Toshiyuki Kondo
  • Publication number: 20090067177
    Abstract: An optical film with focusing function is applicable to a backlight module for adjusting an optical property thereof. A manufacturing method of the optical film includes the steps of: (a) providing a transparent base including a light incident surface and a light output surface, the light output surface having a plurality of focusing microstructures formed thereon; (b) forming a reflective layer on the light incident surface; and (c) providing a laser beam incident on the reflective layer from at least one of the focusing microstructures, the laser beam being focused on the reflective layer by the at least one of the focusing microstructures and forming at least one aperture in the reflective layer, the at least one aperture being corresponding to the at least one of the focusing microstructures. A backlight module using the manufactured optical film is also described.
    Type: Application
    Filed: April 1, 2008
    Publication date: March 12, 2009
    Inventor: SHIN- PING KUNG
  • Publication number: 20090040768
    Abstract: An exemplary backlight module includes a light guide plate and light sources. The light guide plate includes a block body and the recessed parts. The block body has a top light output surface and a bottom surface. The recessed parts are provided at the bottom surface. The light sources are disposed at least partly in or adjacent to the recessed parts.
    Type: Application
    Filed: June 9, 2008
    Publication date: February 12, 2009
    Applicants: TSINGHUA UNIVERSITY, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: JUN ZHU, HE ZHANG, GUO-FAN JIN
  • Publication number: 20090027893
    Abstract: An exemplary optical plate includes at least one transparent plate unit and a diffusion layer. The transparent plate unit includes a light output surface, a bottom surface, a plurality of elongated V-shaped protrusions, and a lamp-receiving portion. The bottom surface is opposite to the light output surface. The elongated V-shaped protrusions are formed at the bottom surface. The lamp-receiving portion is defined in the bottom surface. The diffusion layer is formed on the light output surface of the transparent plate unit. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: October 19, 2007
    Publication date: January 29, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20090027894
    Abstract: A backlight assembly includes a bottom chassis, a flat fluorescent lamp, a frame and a reflecting member. The flat fluorescent lamp is supported in the bottom chassis, and the flat fluorescent lamp includes a plurality of discharge spaces to generate light. The frame is combined with the bottom chassis to hold the flat fluorescent lamp. The reflecting member in one embodiment is coupled to the frame to cover an edge portion of the flat fluorescent lamp. In another embodiment, the reflecting member is integral with the frame.
    Type: Application
    Filed: October 1, 2008
    Publication date: January 29, 2009
    Inventors: Hyeon-Yong Jang, Nam-Ok Kwon
  • Publication number: 20090021947
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of enclosing V-shaped protrusions, a plurality of microstructures and a lamp-receiving portion. The light output surface and the bottom surface are on opposite sides of the optical plate. The enclosing V-shaped protrusions are formed on the bottom surface. The microstructures are formed on the light output surface. Each microstructure has circular cross-section taken along a plane parallel to its base surface thereof, a diameter of the circular cross-section decreasing along a direction away from its base surface thereof. The lamp-receiving portion is defined in at least one of the light output surface and the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: December 3, 2007
    Publication date: January 22, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20090016067
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a first surface, a second surface, a plurality of enclosing V-shaped protrusions, a diffusion layer and a lamp-receiving portion. The second surface is opposite to the first surface. The enclosing V-shaped protrusions are formed at the first surface. The diffusion layer is formed at the second surface. The lamp-receiving portion is defined in one of the first surface and the second surface. A backlight module using the optical plate is also provided.
    Type: Application
    Filed: October 30, 2007
    Publication date: January 15, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20090016068
    Abstract: An exemplary optical plate (20) includes a transparent plate unit. The transparent plate unit includes a light output surface (202), a bottom surface (203), a plurality of microstructures (206), a diffusion layer (205), and a lamp-receiving portion (204). The bottom surface is opposite to the light output surface. The microstructures are formed on the bottom surface. Each microstructure includes four side surfaces connected with each other. A transverse width of each side surface decreases along a direction away from the base surface of the microstructure. The diffusion layer is formed on the light output surface. The lamp-receiving portion is defined in the bottom surface. A backlight module (200) using the present optical plate is also provided.
    Type: Application
    Filed: October 31, 2007
    Publication date: January 15, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20090010005
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of enclosing V-shaped protrusions, a plurality of microstructures and at least one lamp-receiving portion. The light output surface is opposite to the bottom surface. The enclosing V-shaped protrusions are formed on the bottom surface. The microstructures are formed on the light output surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: October 19, 2007
    Publication date: January 8, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Patent number: 7458714
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of microstructures and at least a lamp-receiving portion. The bottom surface is opposite to the light output surface. The microstructures are formed on the light output surface and the bottom surface respectively. Each microstructure includes at least three side surfaces connected with each other, a transverse width of each side surface decreasing along a direction away from the base surface of the microstructure. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: December 2, 2008
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shao-Han Chang
  • Patent number: 7458707
    Abstract: Headlamp optical module for a motor vehicle comprising, disposed along an optical axis: an elliptical-type reflector with at least one light source placed in the vicinity of a first focal point of the reflector; a converging lens placed in front of the reflector and admitting a focal point located in the vicinity of the second focal point of the reflector; and a light recovery means suitable for collecting a portion of the flux from the source and for sending it forward. An ellipsoid-type reflector is provided at the front, in the upper portion of the module, this reflector focusing a portion of the rays issuing from the source in the vicinity of a second focal point located at the front, lower than the focal point of the lens, and the light recovery means has an input face, in proximity to which is located the second focal point of the ellipsoid-type reflector.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: December 2, 2008
    Assignee: Valeo Vision
    Inventor: Antoine de Lamberterie
  • Publication number: 20080285287
    Abstract: An exemplary optical plate includes one or more transparent plate section. The transparent plate section includes a light output surface, a bottom surface, a plurality of spherical depressions, a plurality of protruding structures and one or more lamp-receiving portion. The light output surface is opposite to the bottom surface. The spherical depressions are formed on the bottom surface. The protruding structures are formed on the light output surface. Each protruding structure includes two conical frustums aligned at a center axis and stacked together. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: September 27, 2007
    Publication date: November 20, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Shao-Han Chang
  • Patent number: 7452093
    Abstract: A prism sheet for emitting an incident light in an even distribution state of light quantity even in the case of using an irradiating light source such as a point light source having an emission of narrow band. A display device for deflecting and displaying the light from the light source evenly and efficiently without deteriorating the display quality by applying the prism sheet thereto. A prism sheet for deflecting and emitting a light introduced into a transparent substrate, with a prism formed on the substrate. The prism sheet includes: a circular prism having a plurality of annular grooves arrayed concentrically from a center axis; and a radial prism having a plurality of straight grooves arrayed radially from the center axis.
    Type: Grant
    Filed: August 25, 2005
    Date of Patent: November 18, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Kimitoshi Nagao
  • Patent number: 7452120
    Abstract: An illumination apparatus comprises: (a) at least one light source; (b) a light guide for accepting light from the at least one light source and for guiding the light using total internal reflection, the light guide having a top surface; (c) a light extracting film having an input surface optically coupled with the top surface and an output surface for providing light, wherein the input surface comprises a plurality of features which are optically coupled to the top surface of the light guide, such features having: (i) a first side comprising two or more planar segments; and (ii) a second side comprising two or more planar segments, and wherein either the length of at least some of the features is less than the width of the film or the first and second sides intersect at an apex.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: November 18, 2008
    Assignee: Rohm and Haas Denmark Finance A/S
    Inventors: Junwon Lee, Randall H. Wilson, Charles M. Rankin, Jr., Stephen C. Meissner
  • Patent number: 7448774
    Abstract: An illumination optical system, an illumination unit, and an image projection apparatus employing the same are provided. The illumination optical system includes a light source irradiating a diverging light, a reflection optical system condensing the diverging light from the light source, and a lens optical system projecting the light condensed by the reflection optical system. The reflection optical system is comprised of an aspherical concave mirror. The lens optical system comprises a condensing lens having a positive refractive power in a central part and a refractive power of the condensing lens being decreased toward a circumferential part. Optical efficiency may be improved even when a light-emitting surface of the light source is relatively large and the light source cannot be regarded as a point light source.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: November 11, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Osamu Konuma
  • Patent number: 7445361
    Abstract: An exemplary prism sheet includes a transparent main body. The main body includes a first surface, a second surface opposite to the first surface, a plurality of elongated waved protrusions formed in the first surface, and a plurality of micro-depressions formed in the second surface. Each of micro-depressions has four connecting sidewalls. A transverse width of each sidewall progressively decreases with increasing distance from a bottom surface that is coplanar with the second surface. A backlight module using the present prism sheet is also provided.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: November 4, 2008
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Tung-Ming Hsu, Shao-Han Chang
  • Publication number: 20080266878
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of enclosing V-shaped protrusions, a plurality of spherical protrusions, and a lamp-receiving portion. The light output surface is opposite to the bottom surface. The spherical protrusions are formed on the light output surface. The enclosing V-shaped protrusions are formed on the bottom surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: August 28, 2007
    Publication date: October 30, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20080266874
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a first surface, a second surface, a plurality of conical frustum protrusions, a plurality of spherical protrusions and a lamp-receiving portion. The second surface is opposite to the first surface. The conical frustum protrusions are formed at the first surface. The spherical protrusions are formed at the second surface. The lamp-receiving portion is defined in at least one of the first surface and the second surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: August 27, 2007
    Publication date: October 30, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20080266877
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of elongated V-shaped protrusions, a plurality of spherical depressions, and a lamp-receiving portion. The light output surface is opposite to the bottom surface. The spherical depressions are formed in the light output surface. The elongated V-shaped protrusions are formed on the bottom surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: August 28, 2007
    Publication date: October 30, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20080266871
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of microstructures, and at least a lamp-receiving portion. The bottom surface is opposite to the light output surface. The microstructures are formed at the light output surface and the bottom surface respectively. Each microstructure has circular cross-sections taken along a plane parallel to its base surface thereof, a diameter of the circular cross-sections decreasing along a direction away from its base surface thereof. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: August 8, 2007
    Publication date: October 30, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20080266875
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of through holes and at least one lamp-receiving portion. The light output surface is opposite to the bottom surface. Each of the through holes communicates the light output surface with the bottom surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: August 28, 2007
    Publication date: October 30, 2008
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: SHAO-HAN CHANG, FEN CHEN
  • Publication number: 20080266873
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of microstructures and at least a lamp-receiving portion. The bottom surface is opposite to the light output surface. The microstructures are formed on the light output surface and the bottom surface respectively. Each microstructure includes at least three side surfaces connected with each other, a transverse width of each side surface decreasing along a direction away from the base surface of the microstructure. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: August 21, 2007
    Publication date: October 30, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Shao-Han Chang
  • Publication number: 20080266879
    Abstract: An exemplary optical plate includes at least one transparent plate unit. The transparent plate unit includes a first surface, a second surface, a plurality of microstructures, a plurality of spherical depressions and a lamp-receiving portion. The second surface is opposite to the first surface. The microstructures are formed at the first surface. Each microstructure includes at least three side surfaces connected with each other, a transverse width of each side surface decreasing along a direction away from the first surface. The spherical depressions are formed at the second surface. The lamp-receiving portion is defined in at least one of the first surface and the second surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: September 5, 2007
    Publication date: October 30, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20080266876
    Abstract: An exemplary optical plate includes at least one transparent plate section. The transparent plate section includes a light output surface, a bottom surface, a plurality of spherical protrusions, a plurality of microstructures, and a lamp-receiving portion. The light output surface is opposite to the bottom surface. The spherical protrusions are formed on the light output surface. The microstructures are formed on the bottom surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: August 28, 2007
    Publication date: October 30, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20080266880
    Abstract: An exemplary optical plate includes one or more transparent plate unit. The transparent plate unit includes a light output surface, a bottom surface, a plurality of spherical depressions, a plurality of enclosing V-shaped protrusions, and one or more lamp-receiving portion. The light output surface is opposite to the bottom surface. The spherical depressions are formed on the light output surface. The enclosing V-shaped protrusions are formed on the bottom surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: October 19, 2007
    Publication date: October 30, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: SHAO-HAN CHANG
  • Publication number: 20080266872
    Abstract: An exemplary optical plate includes at least one transparent plate section. The transparent plate section includes a light output surface, a bottom surface, a plurality of elongated V-shaped protrusions, a plurality of spherical protrusions and at least one lamp-receiving portion. The light output surface is opposite to the bottom surface. The elongated V-shaped protrusions are formed on the bottom surface. The spherical protrusions are formed on the light output surface. The lamp-receiving portion is defined in the bottom surface. A backlight module using the present optical plate is also provided.
    Type: Application
    Filed: August 10, 2007
    Publication date: October 30, 2008
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Shao-Han Chang
  • Patent number: 7441927
    Abstract: A lens with lenticules arranged in a spiral pattern is described. In polar coordinates the centers of successive lenticules are radially and angularly spaced by spacing factors including Phi, the conjugate of the Golden Ratio. The resulting spiraling lenticule pattern is free of internal harmonics that lead to striation patterns in the lens refracted light. At the same time the size of the beam spot can be set by reflector size and lenticule profile.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: October 28, 2008
    Assignee: Osram Sylvania Inc.
    Inventor: Michael R Kling
  • Patent number: 7441929
    Abstract: The invention relates to a lighting unit having at least one light source and at least one light guide following the source and at least partially surrounding it, said light guide including at least one light exit surface facing away from the source and at least approximately located centrally, surrounded by at least one externally located light exit surface. In addition, at least one externally located light exit surface comprises a plurality of surface elements adjacent to each other with or without offset. These surface elements are surface regions of curved solids. With the present invention, a compact lighting unit is developed that makes possible a uniformly high yield in a preassigned target region.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: October 28, 2008
    Assignee: Odelo GmbH
    Inventors: Emil Stefanov, Thomas Luce, Andreas Erber, Jochen Kunze
  • Publication number: 20080247173
    Abstract: An optical device for distributing light produced by a white LED or other light-producing device includes a lens portion that refracts the light to provide a desired light intensity distribution, and a collimating portion that internally reflects light from the white LED. The optical device may be molded from an acrylic polymer material or the like. The reduced thickness of the device facilitates low cycle times and reduces warpage or other distortion that would otherwise be generated during the molding process.
    Type: Application
    Filed: April 9, 2008
    Publication date: October 9, 2008
    Inventors: Joshua M. Danek, Thomas J. Veenstra
  • Publication number: 20080225526
    Abstract: An optical sheet includes a light scattering layer which scatters light made incident from an incident surface to an emission surface side and a plurality of light reflecting portions which reflect light scattered by the light scattering layer to the light scattering layer side. The optical sheet further includes a plurality of light transmitting portions constituted of an air layer for transmitting the scattered light to lenticular sheets. The plurality of the light transmitting portions are arranged along a longitudinal direction so as to form a convex portion with respect to a non-lens surface. Consequently, the light reflecting portions and the light transmitting portions are disposed alternately in stripes along an arrangement direction.
    Type: Application
    Filed: May 19, 2008
    Publication date: September 18, 2008
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Kenichi Yoshizawa, Masaru Miyashita
  • Publication number: 20080212328
    Abstract: In some embodiments, an apparatus for use generating illumination is provided that comprises a reflective base, a first light source positioned proximate the reflective base, and a reimaging reflector positioned partially about the first light source, where a percentage of light emitted from the first light source is reflected from the reimaging reflector to the reflective base adjacent the first light source establishing a first real image. The reimaging reflector can further comprise a first sector of a first ellipsoid and a second sector of a second ellipsoid, where the first and second sectors establish the first and a second real image. Further embodiments provide a lens that includes a reimaging reflector that receives light and reflects the light establishing a first real image. The reimaging reflector can further comprise a plurality of sectors that reflect light to establish first and second real images.
    Type: Application
    Filed: May 12, 2008
    Publication date: September 4, 2008
    Applicant: LIGHT PRESCRIPTIONS INNOVATORS, LLC
    Inventors: Juan Carlos Minano, Pablo Benitez, Waqidi Falicoff, Yupin Sun, William A. Parkyn, Roberto Alvarez