Curved Main Surface Patents (Class 362/334)
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Patent number: 11815240Abstract: An optical lens includes a front lens part and a rear lens part disposed rearward of the front lens portion. The rear lens part has a rear end, a light entry portion that is concaved forwardly from the rear end and that is adapted to receive incidence of light rays, and a reflective portion that extends forwardly from the rear end and that surrounds the light entry portion. The reflective portion has two first reflective surfaces respectively disposed on top and bottom sides of the light entry portion, two second reflective surfaces respectively disposed at left and right sides of the light entry portion, and a plurality of third reflective surfaces each disposed between one of the first reflective surfaces and one of the second reflective surfaces. The first, second, and third reflective surfaces together form a discontinuous stepped surface around the light entry portion.Type: GrantFiled: December 2, 2022Date of Patent: November 14, 2023Assignee: T.Y.C. Brother Industrial Co., Ltd.Inventor: Ming-Chih Shih
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Patent number: 10619829Abstract: Provided is a lighting device that includes a housing having an open end and a closed end, a signal replaceable light source that includes a light source connected disposed near the closed end and configured to generate light, an inner refractive optical element encapsulating the light source configured to reflect the light towards the open end, and an electronic component configured to control operation of the light source; and outer refractive optical element disposed at the open end and configured to receive the light from the inner refractive optical element and reflect the light therefrom.Type: GrantFiled: July 10, 2017Date of Patent: April 14, 2020Assignee: CURRENT LIGHTING SOUTIONS, LLCInventors: Eden Dubuc, Yu Felix Fan, Luigi Tavernese
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Patent number: 10488006Abstract: A vehicular lighting assembly (and methods of making the same) that includes a parabolic reflector; a translucent lens element; and a light source configured to emanate light that strikes an interior surface of the reflector and exits the assembly through the element. Further, an interior surface of the lens element comprises one or more fluted regions that are substantially invisible and configured to refract light from the source away from oncoming vehicles. In addition, the fluted region can be within, on, or integral with, the interior and/or exterior surfaces of the lens element in certain configurations.Type: GrantFiled: July 15, 2016Date of Patent: November 26, 2019Assignee: Ford Global Technologies, LLCInventors: Stuart C. Salter, Aaron Bradley Johnson, Paul Kenneth Dellock, Stephen Kenneth Helwig
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Patent number: 9915404Abstract: An optical element includes a light entrance surface, a light exit surface, and a reflective surface. The light entrance surface has a first entrance sub-surface, a second entrance sub-surface, and a third entrance sub-surface which form a cavity for containing a light source. The light exit surface is opposite to the light entrance surface and has a first exit sub-surface, a second exit sub-surface, and a third exit sub-surface. The reflective surface connects the light entrance surface with the light exit surface. The reflective surface has a first reflective sub-surface connecting the first entrance sub-surface with the first exit sub-surface and a second reflective sub-surface connecting the third entrance sub-surface with the third exit sub-surface. The first reflective sub-surface has a step laterally extending from a side adjacent to the light entrance surface to another side adjacent to the light exit surface.Type: GrantFiled: September 14, 2016Date of Patent: March 13, 2018Assignee: BROALUX International LimitedInventors: Jui-Hung Sun, Chun-Te Wu
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Patent number: 9784429Abstract: The invention provides a method and a device for greatly increasing an irradiation range of a lamp.Type: GrantFiled: November 27, 2014Date of Patent: October 10, 2017Assignee: HONGLI LIGHTING GROUP CO., LTD.Inventors: Guofeng Lv, Wenqing Lv
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Patent number: 9719656Abstract: An aspheric lens is rotating symmetrically with a central optical axis, the aspheric lens includes a first optical surface and a second optical surface opposite to the first optical surface, the second optical surface includes a first portion, the first portion is formed in a rotation symmetrical formed with the central optical axis and is flat.Type: GrantFiled: February 2, 2016Date of Patent: August 1, 2017Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Po-Yu Lin
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Patent number: 9714751Abstract: An illumination lens includes a light incident surface that defines a cavity and has a flat top and lateral flanks, the light incident surface configured to receive light from an underlying light emitting element. The illumination lens also includes a light exiting surface having a central indentation and a surrounding toroid. The flat top has an angular range of 0 to 25° with respect to a vertical optical axis and faces the central indentation.Type: GrantFiled: March 5, 2015Date of Patent: July 25, 2017Assignee: Seoul Semiconductor Co., Ltd.Inventors: David G Pelka, William A Parkyn
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Patent number: 9689553Abstract: The disclosure relates to a lens, the lens includes a bottom surface and a light emergent surface relative to the bottom surface, the bottom surface defines a recess configured to receive a light source. The lens further includes a light incident surface opposite to the recess, the light incident surface faces away from the light emergent surface. The light incident surface is formed by a number of ring-shaped curved surfaces connected to each other one by one. The disclosure also relates to a light emitting device using the same.Type: GrantFiled: October 20, 2015Date of Patent: June 27, 2017Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Po-Chin Chiu
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Patent number: 9677738Abstract: An optical device for transforming an input light distribution from an LED light source to provide an omni-directional output light distribution for solid-state lighting is disclosed. The optical device has a conical form, comprising first and second coaxial cones of different refractive index, defined by coaxial inner and outer cone surfaces, which converge from a cone base to a rounded tip at the apex. Preferably, each of the inner and outer cone surfaces comprises a plurality of conical facets defining a grating structure. The inner cone, i.e. air cavity, is directly coupled to an LED emitter area. Cone angles and spacings of conical facets, defining inner and outer gratings, are tailored to reshape a predetermined input light distribution. Apertures assist in heat dissipation. A lightweight, compact device with high transmission efficiency can be manufactured at low cost by one-step injection molding from an optical-grade polymer, such as PMMA.Type: GrantFiled: March 14, 2014Date of Patent: June 13, 2017Assignee: 1947796 Ontario Inc.Inventors: Jie Sun, Christopher Hart, Stephen Naor
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Patent number: 9664356Abstract: An illumination lens includes a light incident surface that defines a cavity and has a flat top surface and lateral flanks, the light incident surface configured to receive light from an underlying light emitting element, a light exiting surface having a central indentation and surrounding toroid, and a bottom surface connecting the light incident surface and the light exiting surface. The lateral flank includes a first region extending from the top surface and a second region extended from the first region, the second region is a curved surface, of which the center of the curvature thereof lies on the illumination lens, an intersection of the second region and a horizontal optical axis forms a first point, and the first point is disposed lower than a second point where the bottom surface and the light exiting surface intersect.Type: GrantFiled: July 30, 2015Date of Patent: May 30, 2017Assignee: Seoul Semiconductor Co., Ltd.Inventors: David G Pelka, William A Parkyn
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Patent number: 9589077Abstract: A method for designing a lens of a lighting device having a first spherical surface refracting light generated from an LED device that is a light source and a second spherical surface refracting the light passing through the first spherical surface includes determining an irradiation surface that is an area onto which light passing through the second spherical surface is irradiated, forming a reference circle disposed within the irradiation surface; designing a free curved surface of the first spherical surface by using light emitted from the LED device as an input direction vector and a coordinate within the reference circle as an output direction vector to calculate normal vectors, and designing a free curved surface of the second spherical surface by using light refracted by the first spherical surface as an input direction vector and a coordinate within the irradiation surface as an output direction vector to calculate normal vectors.Type: GrantFiled: June 19, 2015Date of Patent: March 7, 2017Assignee: LG ELECTRONICS INC.Inventors: Sunjung Park, Chunji Hong, Junwon Lee
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Patent number: 9435507Abstract: An optical element has a light receiving surface covering a light source arranged on a plane and an exit surface covering the light receiving surface. When an axis passing through the center of the light source and is perpendicular to the plane is designated as an optical axis and the point of intersection of the optical axis and the light receiving surface is designated as O1, the light receiving surface is concaved around the optical axis with respect to the periphery. When an angle which a normal to the light receiving surface on a point P thereon forms with the optical axis is designated as ?h and distance in the optical axis direction from O1 to P is designated as z, ?h has at least one local maximum value and at least one local minimum value with respect to z while P is moved along the light receiving surface.Type: GrantFiled: October 14, 2014Date of Patent: September 6, 2016Assignee: NALUX CO., LTD.Inventors: Katsumoto Ikeda, Daisuke Seki, Kouei Hatade
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Patent number: 9310594Abstract: A light source module includes a light source and an optical lens facing the light source. The optical lens includes a light incident face facing the light source, a light emitting face opposite to the light incident face, and a connecting face connecting the light incident face and the light emitting face. The connecting face is planar. The light emitting face includes a lateral face extending upwardly from an outer periphery of the connecting face and a top face located above the light incident face. The top face of the light emitting face comprises a center curved facet and a periphery curved facet surrounding and extending outwardly from the center curved facet. The light incident face is a discontinuous face and includes a plurality of curved facets.Type: GrantFiled: October 31, 2013Date of Patent: April 12, 2016Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Feng-Yuen Dai, Chau-Jin Hu, Li-Ying Wang He
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Publication number: 20150117016Abstract: A lens including an upper surface having a curved portion having a changing curvature in a direction extending away from a central axis of the lens, and a lower surface having a concave portion disposed on the central axis of the lens. The concave portion of the lower surface includes an entrance disposed on a lower region of the concave portion and configured to receive light emitted from a light-emitting diode chip, and an upper end surface disposed on an upper region of the concave portion. The concave portion includes a width that narrows in a direction extending away from the entrance. The upper end surface is nonplanar.Type: ApplicationFiled: December 30, 2014Publication date: April 30, 2015Inventors: Eun Ju KIM, Bang Hyun Kim, Young Eun Yang
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Patent number: 9004726Abstract: Light directing films employing at least two layers forming a continuous corrugated boundary between major surfaces of the film. Light received by a major surface of the film is internally redirected by interacting with the facets of the corrugated inter-layer boundary and is emitted from the opposing major surface towards a new propagation direction which is different from the original propagation direction by up to 90 degrees. Light directing films may have additional layers and/or layer boundaries which may provide additional bend angles to light rays or otherwise diffuse the emitted beam.Type: GrantFiled: October 26, 2012Date of Patent: April 14, 2015Assignee: SVV Technology Innovations, Inc.Inventor: Sergiy Victorovich Vasylyev
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Patent number: 8992052Abstract: An optical element for a lamp or lighting apparatus having at least one light emitting diode (LED) as a light source is provided. The optical element is positioned proximate to the LED and receives light rays therefrom. In turn, the optical element distributes the substantially unidirectional light output from the LED into an omnidirectional output with a controlled variance in light intensity at different directions about the LED. A diffuser can also be used around the optical element and LED to provide further distribution of the light rays by e.g., light scattering.Type: GrantFiled: August 3, 2012Date of Patent: March 31, 2015Assignee: GE Lighting Solutions, LLCInventors: Dengke Cai, Jeyachandrabose Chinniah, Glenn Howard Kuenzler
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Patent number: 8946743Abstract: Disclosed is a light emitting apparatus. The light emitting apparatus includes a package body; first and second electrodes; a light emitting device electrically connected to the first and second electrodes and including a first conductive semiconductor layer, a second conductive semiconductor layer, and an active layer between the first and second conductive semiconductor layers; and a lens supported on the package body and at least a part of the lens including a reflective structure. The package body includes a first cavity, one ends of the first and second electrodes are exposed in the first cavity and other ends of the first and second electrodes are exposed at lateral sides of the package body, and a second cavity is formed at a predetermined portion of the first electrode exposed in the first cavity.Type: GrantFiled: October 14, 2010Date of Patent: February 3, 2015Assignee: LG Innotek Co., Ltd.Inventor: Bong Kul Min
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Patent number: 8905593Abstract: A luminous flux control member that controls travelling direction of light emitted from a light source includes an incident area, an emission area, and a plurality of projecting sections. The plurality of projecting sections are constituted by an inner area, an intermediate area, and a peripheral area defined in the radial direction, and a first specific projecting section disposed in the inner area is configured such that a planar section that is used to measure the height of the first specific projecting section and is perpendicular to the optical axis is connected to an inner peripheral end and an outer peripheral end of a base end portion of the first specific projecting section. The projecting sections other than the first specific projecting section, in principle, come into contact internally or externally with another projecting section other than the first specific projecting section.Type: GrantFiled: August 31, 2012Date of Patent: December 9, 2014Assignee: Enplas CorporationInventor: Tomohiro Saito
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Patent number: 8894250Abstract: In an illuminating device, when exiting lights come out from a lens sheet, the optical paths of the exiting lights are deflected in a direction opposite to an optical axis of a light source by means of a plurality of prisms which are included in a first lens group arranged on an inward side of the lens sheet located adjacent to the optical axis of the light source and each of which has a inclined face facing toward the optical axis of the light source, wherein the exiting lights from the light source via the first lens group of the lens sheet are adapted to mix with exiting lights from the light source via a second lens group located outside the first lens group, whereby the degree of color unevenness is reduced, that appears inherently when a pseudo white LED is used as the light source of the illuminating device.Type: GrantFiled: February 27, 2012Date of Patent: November 25, 2014Assignee: Minebea Co., Ltd.Inventors: Masaki Asai, Koji Sakai, Ryohei Takayama
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Patent number: 8777458Abstract: Disclosed is a light emitting device to reduce the number of components and elements of a light emitting device and a lighting device having the light emitting device, and simplify and miniaturize the structures of these devices. With this light flux controlling member (4), a total reflecting surface (12) functions like a reflecting member, light from a light emitting element (LED, for example) (3) that is incident from an input surface (13) and that arrives at the total reflecting surface (12) is total-reflected by the total reflecting surface (12) toward the output surface (11) side (including a first output surface (11a) and second output surface (11b)), and the illuminating light from the second output surface (11b) is superimposed upon the illuminating light from the first output surface (11a), so that the light from the light emitting element (LED, for example) (3) is used efficiently and illuminates the illumination target surface (6) over a wide range.Type: GrantFiled: March 30, 2011Date of Patent: July 15, 2014Assignee: Enplas CorporationInventors: Akinobu Seki, Kyouhei Yamada, Noriyuki Kawahara, Hiroshi Takatori
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Patent number: 8678628Abstract: A vehicle light using a projection lens of a novel appearance can provide a feeling of solidness as compared to a simple spherical shape. The vehicle light can include a projection lens having an optical axis and a plurality of separate lens portions divided in a radial pattern with respect to the optical axis of the projection lens. The separate lens portions can have respective light exiting surfaces of different curvatures, and respective light incident surfaces, the shapes of which are determined such that the separate lens portions have the same thickness and the same focal point.Type: GrantFiled: January 24, 2012Date of Patent: March 25, 2014Assignee: Stanley Electric Co., Ltd.Inventor: Takashi Futami
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Patent number: 8669571Abstract: A light distribution controller of a light-emitting device includes a first optical member formed of ZnO disposed over an LED interposing a transparent adhesive, and a second optical member which covers the first optical member. The first optical member includes a first concave portion having an opening in a regular hexagon shape whose area gradually increases. In the first concave portion, inner wall surfaces having inclined surfaces, each of whose bases is formed by one side of the hexagon of the opening shape, are formed. Outside of the first optical member, outer wall surfaces each having a trapezoidal shape are formed. The second optical member includes a second concave portion arranged so that light at an annular peak in the light distribution characteristic of the light traveled through the first optical member is totally reflected.Type: GrantFiled: July 4, 2011Date of Patent: March 11, 2014Assignee: Panasonic CorporationInventors: Akihiko Murai, Masahiro Kume, Akiko Nakamura, Tooru Aoyagi, Kiyoshi Fujihara
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Publication number: 20140055992Abstract: An illumination apparatus includes an optical element. The optical element includes a light incident curved surface and a light outgoing curved surface. The center of curvature of the light incident curved surface is positioned on the center of the light emitting surface of a light source, and the center of the curvature of the light outgoing curved surface is positioned beneath the center of curvature of the light incident curved surface and deviates from the light source. The radius of curvature R1 of the light outgoing curved surface is greater than the radius of curvature R2 of the light incident curved surface.Type: ApplicationFiled: December 20, 2012Publication date: February 27, 2014Applicant: LEXTAR ELECTRONICS CORPORATIONInventor: Han-Chung Hsu
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Publication number: 20140029266Abstract: A bulb for a semiconductor luminous device is provided. The bulb is three-dimensionally extended and includes at least one optically effective surface structure. A semiconductor luminous device may include at least one semiconductor light source and an optically transmissive bulb for transmitting light emitted by the at least one semiconductor light source, the bulb being three-dimensionally extended and comprising at least one optically effective surface structure, wherein the bulb encloses at least one semiconductor light source.Type: ApplicationFiled: March 13, 2012Publication date: January 30, 2014Applicant: OSRAM GMBHInventor: Johannes Hoechtl
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Patent number: 8602621Abstract: The present invention relates to an optical element including a light guide, into which light from one or more light-emitting diodes in a light unit arranged at one end of the light guide is injected, and a reflector arranged at the other end of the light guide capable of reflecting light incident on the reflector. The light guide further includes a prismatic surface comprising a plurality of prisms, each prism being arranged at an angle to an axial direction of the light guide, for guiding the light emitted from the light unit towards the output end of the light guide. The present invention also relates to a light source including an optical element according to the present invention, the light source being arranged for retrofitting into a luminaire employing an incandescent light source.Type: GrantFiled: January 5, 2010Date of Patent: December 10, 2013Assignee: Koninklijke Philips N.V.Inventors: Yun Li, Ye Liu
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Patent number: 8596829Abstract: A light flux controlling member has a flange projecting outward of a radial direction of a light controlling emission surface and leg parts arranged within a range of area width L in a back surface and on the reference optical axis side of the boundary between the flange and the light controlling emission surface, and L is given by L=t×tan(???), where: t is the thickness of the flange or the height from the back surface to the outermost rim part; ? is an angle of incidence of a light parallel to the reference optical axis and incident on the light controlling emission surface in the outermost rim part; and ? is an angle of emission, from the light controlling emission surface, of a refraction light generated when the light parallel to the reference optical axis is incident on the light controlling emission surface from the outermost rim part.Type: GrantFiled: August 23, 2010Date of Patent: December 3, 2013Assignee: Enplas CorporationInventor: Masao Yamaguchi
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Patent number: 8582053Abstract: A light exit surface of an illuminating lens has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region and a total reflection region. When the position of a light source on the optical axis is defined as a starting point, the transmissive region transmits light that has been emitted from the starting point at a relatively small angle with respect to the optical axis, and the total reflection region totally reflects light that has been emitted from the starting point at a relatively large angle with respect to the optical axis.Type: GrantFiled: February 12, 2010Date of Patent: November 12, 2013Assignee: Panasonic CorporationInventors: Tomoko Iiyama, Syunsuke Kimura, Daizaburo Matsuki
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Patent number: 8576351Abstract: An illuminating lens includes a main body and a ring portion. The main body has a light exit surface, and the light exit surface has a first light exit surface recessed toward a point on the optical axis and a second light exit surface extending outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region in the center thereof, and a total reflection region on the peripheral side thereof. The ring portion has a back surface configured to guide the light that has been emitted from a light source, totally reflected repeatedly at the light exit surface, and then entered the ring portion to an end surface by total reflection.Type: GrantFiled: February 12, 2010Date of Patent: November 5, 2013Assignee: Panasonic CorporationInventors: Syunsuke Kimura, Daizaburo Matsuki, Tomoko Iiyama
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Patent number: 8558967Abstract: A light exit surface of an illuminating lens has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface has a transmissive region and a total reflection region. When the position of a light source on the optical axis is defined as a starting point, the transmissive region transmits light that has been emitted from the starting point at a relatively small angle with respect to the optical axis, and the total reflection region totally reflects light that has been emitted from the starting point at a relatively large angle with respect to the optical axis. A reflective layer is formed on a bottom surface that surrounds a light entrance surface and faces oppositely to the light exit surface.Type: GrantFiled: February 12, 2010Date of Patent: October 15, 2013Assignee: Panasonic CorporationInventors: Tomoko Iiyama, Syunsuke Kimura, Daizaburo Matsuki
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Patent number: 8523404Abstract: An illumination device, comprising a basic body (1) having a cutout (5), a reflector (51), which is formed at least by parts of the cutout (5), and at least one optoelectronic semiconductor component (20) arranged in the cutout (5), wherein the semiconductor component (20) has an optical element (3) designed for directing at least part of the electromagnetic radiation emitted by the semiconductor component (20) during operation onto the reflector (51), wherein a radiation exit area (61) of the illumination device is at least twice as large as the sum of the radiation exit areas (44) of the semiconductor components.Type: GrantFiled: November 27, 2009Date of Patent: September 3, 2013Assignee: OSRAM Opto Semiconductors GmbHInventors: Ales Markytan, Christoph Neureuther, Steffen Block
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Patent number: 8500310Abstract: Disclosed herein is an indication plate including: a plate member including a light-transmitting material; and an indication part provided at a surface on one side with respect to the thickness direction of the plate member, wherein the indication part includes a light-shielding part including a light-shielding material and covering the surface on one side, and a convex portion including the light-transmitting material, the convex portion projecting from the surface on one side and being exposed from the light-shielding part; the convex portion has a circumferential surface projecting from the light-shielding part, and an end face connecting tip portions of the circumferential surface to each other, and a metallic foil having a light-transmitting property is attached to the end face.Type: GrantFiled: March 17, 2009Date of Patent: August 6, 2013Assignee: Sony CorporationInventor: Takeshi Sakamoto
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Patent number: 8403549Abstract: An edge-type backlight module and a direct-type backlight module with a optical device are provided. The optical device comprises an array layer and a second refractive layer. The array layer has a first refractive index (n1) and contains pluralities of lenticular lens disposed on a base surface side by side. The lenticular lens contains a curving structure with a peak, a trough, a curvature radius (R), a width (P) and an altitude (H) between the peak and the trough. The trough is disposed on the base1 surface. The array layer has a first critical angle (?1c) relative to the normal of the base surface and satisfies ? 1 ? c = sin - 1 ? ( 1 n 1 ) and H = R 1 + K ? [ 1 - 1 - ( 1 + K ) ? ( P 2 ? R ) 2 ] . The conical constant (K) of the lenticular lens ranges from ?2.1 to ?1.5.Type: GrantFiled: November 11, 2010Date of Patent: March 26, 2013Assignee: Entire Technology Co., Ltd.Inventors: Hao Xiang Lin, Yan Zuo Chen, Wen Feng Cheng, Jui Hsiang Chang
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Patent number: 8303141Abstract: A total internal reflection (TIR) lens has an integrated lamp cover adapted to a lamp of a desired form factor (e.g., PAR-38). The size and shape of the TIR lens can be adapted to optimize the light output of the lamp with little regard to the desired form factor. The integrated lamp cover can extend the front surface of the TIR lens in a direction transverse from the optical axis.Type: GrantFiled: December 17, 2009Date of Patent: November 6, 2012Assignee: LedEngin, Inc.Inventor: Wu Jiang
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Patent number: 8231249Abstract: A lighting system is provided that includes: an optical device including a cylindrical lens made up of a liquid lens, an emission unit including an axis line in the Z-axis direction, and a reflecting mirror configured to reflect light emitted from the emission unit. The cross-sectional shape of a light reflecting portion when cutting away the reflecting mirror at a virtual plane perpendicular to the Z axis is a part of a parabola. The axis line of the emission unit is positioned between the vertex-of the parabola and a focal point. Thus, there is provided a lighting system in which an optical device, which is made up of a liquid lens employing an electrowetting phenomenon, having an arrangement and configuration whereby high optical power can be obtained.Type: GrantFiled: September 4, 2008Date of Patent: July 31, 2012Assignee: Sony CorporationInventors: Miki Tsuboi, Yuichi Takai, Mariko Obinata
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Patent number: 8197104Abstract: A secondary optical lamp guard includes an upper half portion, two clamp portions and a lower half portion, and the upper half portion has a plurality of optical refractive angles formed on an internal side of the upper half portion for improving the effect of the optical refractive angles, and the upper half portion and the lower half portion are processed by a plasma treatment to produce nanoscale holes for facilitating the dissipation of heat generated by a light source.Type: GrantFiled: June 10, 2010Date of Patent: June 12, 2012Assignee: UP Key Light & Energy Technology Co., Ltd.Inventor: Jacky Chang
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Patent number: 8172433Abstract: An optoelectronic component has optically active region, with the optically active region comprising at least one semiconductor chip which is provided for generating electromagnetic radiation, and comprising a beam-forming element through which at least a portion of the electromagnetic radiation which is emitted from the semiconductor chip in operation passes and which has an optical axis, and with the optically active region having quadrant symmetry with respect to a coordinate system which is perpendicular to the optical axis. An illumination device has an optoelectronic component such as this.Type: GrantFiled: June 28, 2007Date of Patent: May 8, 2012Assignee: Osram Opto Semiconductors GmbHInventor: Julius Muschaweck
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Patent number: 8104930Abstract: An LED module includes an LED and a lens covering the LED. The LED has an optical axis. The lens has an incident face for incidence of light of the LED into the lens and an opposite emitting face for refracting the light of the LED out of the lens. The emitting face has two elongated, ellipsoid lateral surfaces and a middle surface located between and connecting with the two ellipsoid lateral surfaces. The incident face has a sidewall and a ceiling connecting to a top of the sidewall. The middle surface of the emitting face and the ceiling of the incident face are corresponding to each other and inclined laterally relative to the optical axis of the LED.Type: GrantFiled: January 18, 2010Date of Patent: January 31, 2012Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.Inventors: Hai-Wei Zhang, Chin-Chung Chen, Jia-Chuan Lv
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Patent number: 8023068Abstract: An optical sheet, a backlight unit including the optical sheet, and a liquid crystal display including the backlight unit are provided. The optical sheet includes a base film including a first surface and a second surface opposite the first surface and a plurality of projections on the base film. A first thickness between the first surface and the second surface is different from a second thickness between the first surface and the second surface.Type: GrantFiled: January 23, 2009Date of Patent: September 20, 2011Assignee: LG Electronics Inc.Inventors: Hanbitt Joo, Kabjin Hwang
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Patent number: 7922368Abstract: A liquid crystal display device may include a backlight unit for providing light for the display. A backlight unit may include light modules. The light modules include colored LEDs surrounded by a first lens for refracting the light from the LEDs. A second lens surrounds the first lens for further refraction of the light to improve brightness and the uniformity of the light.Type: GrantFiled: December 12, 2007Date of Patent: April 12, 2011Assignee: LG Display Co., Ltd.Inventors: Jae Bum Kim, Jae Kyung Kang, Sung Keun Lee, Jae Jin Kim, Hyung Dong Kim, Sang Dae Lee
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Patent number: 7918583Abstract: Lighting devices are provided for efficiently distributing light over an area to provided uniform illumination over a wide angle or other tailored illumination patterns. Each light device has at least one light source, at least one collimator for partially collimating light from the light source, and at least one diffuser for diffusing light from the collimator. The diffuser provides diffused light over an area from the diffuser having an intensity that is angularly dependent in accordance with the angular distribution intensity of light outputted from the collimator, so as to provide a predetermined illumination pattern from the device. The light sources and collimators may be provided in one or two-dimensional arrays, and a single diffuser may be formed on each collimator or the diffuser may be along a plate spaced from the collimators.Type: GrantFiled: August 16, 2006Date of Patent: April 5, 2011Assignee: RPC Photonics, Inc.Inventors: Stephen H. Chakmakjian, Donald J. Schertler, Tasso Sales, G. Michael Morris
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Patent number: 7901108Abstract: An LED light source device using light from luminescent elements at a high level of uniformity and efficiency, and to conduct irradiation with a high level of design freedom an LED light source device is equipped with luminescent elements and a translucent light-guiding member. The translucent light-guiding member has a central convex lens with a first cylindrical light-guiding part formed on the outer periphery of the central convex lens and a second cylindrical light-guiding part formed on the outer periphery of the first cylindrical light-guiding part, such that an air layer is formed between the outer peripheral surface of the first cylindrical light-guiding part and the inner peripheral surface of the second cylindrical light-guiding part, the outer peripheral surface of the first cylindrical light-guiding part and the outer peripheral surface of the second cylindrical light-guiding part being rotated quadratic surfaces with the same focal point.Type: GrantFiled: April 2, 2009Date of Patent: March 8, 2011Assignee: Ushiodenki Kabushiki KaishaInventors: Kiyoyuki Kabuki, Hiroshige Hata
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Patent number: 7866855Abstract: A reflector (14) for a luminaire comprises a generally parabolic wall (28) having series of main right-angled prisms (16) and an interleaved series of transition prisms (18). The main and transition prisms have essentially the same shapes and follow the same overall curvature to control the illumination. The transition prisms transition into the main prisms by merging a peak of a transition prism into the valley between adjacent main prisms in a short transition zone (20). Thus, the transition zone has only a small effect on the overall lighting pattern.Type: GrantFiled: December 2, 2005Date of Patent: January 11, 2011Assignee: ABL IP Holding LLC.Inventor: Yaser S. Abdelsamed
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Patent number: 7841750Abstract: A light-directing lensing member for off-axial preferential-side distribution of light from a light emitter having an emitter axis, including a base end with a perimeter-loop line defining a main plane transverse the emitter axis, and an outer surface configured for refracting light from the emitter in a predominantly off-axis direction toward the preferential side. The outer surface includes a major lens-portion and an axially-located minor lens-portion. The major lens portion outer surface has a front region centered on the front side, a back region centered on the back side, and a middle region around the emitter axis and contiguous with the front and back regions. The minor lens-portion has a surrounding-loop surface extending from the middle region transverse the main plane and terminating at an end surface configured to direct substantially axially-parallel light from the emitter in off-axis direction toward the preferential side.Type: GrantFiled: August 1, 2008Date of Patent: November 30, 2010Assignee: Ruud Lighting, Inc.Inventors: Kurt S. Wilcox, Chris Strom
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Patent number: 7819560Abstract: Provided are an illumination device and a lens employed in the device for controlling light travelling direction, the device being capable of illuminating brightly and uniformly a certain limited region (region-to-be-illuminated) corresponding to an object such as subject for photography. The illumination device emits light H coming from a light emitting element (point-like light source) employing a LED as a light emitting source via the lens. A light control emission face of the lens emits light (rays), which is included in light H introduced into the lens through an incidence face thereof and travelling within the lens to the light control emission face without undergoing inner-reflection at any surface of the light control emission face, as illumination light.Type: GrantFiled: April 24, 2007Date of Patent: October 26, 2010Assignee: Enplas CorporationInventor: Shingo Ohkawa
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Patent number: 7819550Abstract: An array of LEDs (30) is provided having a lens array (34) for collecting divergent light from each LED (30). Each lens (34) in the array is associated with a respective LED (30) and has a compound shape including a curved surface (40) that may be spherical or may have an offset aspherical shape. The curved surfaces (40) are centered about each side of its associated LED (30). The lens (34) may alternatively include faceted surfaces (46) that approximate the curved lens surface.Type: GrantFiled: October 28, 2004Date of Patent: October 26, 2010Assignee: Phoseon Technology, Inc.Inventors: Duwayne R. Anderson, Roland Jasmin
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Patent number: 7798679Abstract: A light-emitting device (10) is arranged such that (x) R1 monotonically decreasing as ?1 increases, at least in a range of ?1<?/3, where an intersection of a light axis Z and an emission surface of a light-emitting element (1) is a reference point; ?1 is an angle between the light axis Z and a straight line that passes through the reference point and an arbitrary point on a light-incoming surface (2a), and R1 is a distance between the reference point and the arbitrary point on the light-incoming surface (2a); (y) R2 monotonically increasing as ?2 increases, at least in a range of ?2<?/3, where ?2 is an angle between the light axis Z and a straight line that passes through the reference point and an arbitrary point on a light-outgoing surface (2b), and R2 is a distance between the reference point and the arbitrary point on the light-outgoing surface (2b); and (z) A2 scatters light without generating uneven brightness on a liquid crystal display panel and has higher scattering ability that is obtained byType: GrantFiled: August 8, 2008Date of Patent: September 21, 2010Assignees: Sharp Kabushiki Kaisha, Enplas CorporationInventors: Fumio Kokubo, Masao Yamaguchi
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Patent number: 7789537Abstract: An LED (10) includes a chip with a light-emitting surface (140) and an encapsulation on the chip. The encapsulation has a light output surface (110) facing the light-emitting surface of the chip and has a convex surface (112) surrounding a concave surface (114). A portion of light (30) emitted by the light-emitting surface is refracted divergently via the concave surface to a predetermined area above and around the concave surface, and another portion of light (40) emitted by the light-emitting surface is refracted convergently via the convex surface to the predetermined area.Type: GrantFiled: October 8, 2008Date of Patent: September 7, 2010Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.Inventors: Fang-Xiang Yu, Shun-Yuan Jan
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Patent number: 7744246Abstract: A portable luminaire includes an optical module, a power source and a housing. The optical module has at least one light emitting diode (LED) that emits light with a wide divergence, a non-imaging optical element and a transparent window. The non-imaging optical element (NIO) has a refractive member located around a LED optical axis and a total internal reflection member located around the refractive member. The refractive member and the total internal reflection member are integrated in a single transparent element having a mutual focal point. The NIO element collects a significant amount of light emitted by the LED with wide divergence located at the focal point to compress the collected light with high efficiency into a required pattern with a generally different angular distribution in a horizontal plane and a vertical plane, and to direct the compressed light outside of the luminaire.Type: GrantFiled: October 31, 2007Date of Patent: June 29, 2010Assignee: Farlight, LLCInventors: Alexander Rizkin, Robert H. Tudhope
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Patent number: 7731401Abstract: An exterior automotive lamp may be formed with LED light sources by efficiently using the available light. The LEDs are arranged in an array to illuminate a central lens to produce the horizontal spread from the central portion of the LED beam. Meanwhile a reflector gathers the more disperse side-emitted portion of the LED beam and directs that light as an outer sheath to form a supplementary portion of the beam. The lamp efficiently provides a beam that may be adapted for highbeam, lowbeam, fog, or signal purposes.Type: GrantFiled: April 11, 2007Date of Patent: June 8, 2010Assignee: Valeo Sylvania LLC.Inventors: Robert Lee King, Dennis Wilkerson, Dennis Black
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Patent number: 7726849Abstract: 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: GrantFiled: March 3, 2009Date of Patent: June 1, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Eric Haddad, Jason Metzler