Curved Main Surface Patents (Class 362/340)
  • Patent number: 9250380
    Abstract: A backlight module includes a light guide plate, at least one light source, and a reflective plate. The light source is configured for emitting light toward the light guide plate. The reflective plate has a plurality of reflective units arranging along a curved direction. Each of the reflective units includes a body and a plurality of microstructures. The body has a main surface facing the light guide plate. The plurality of microstructures are disposed on the main surface of the body. Each of the microstructures has a reflective surface. A first angle is included between the reflective surface of each of the microstructures and the main surface of the body. The first angles of the microstructures in one reflective unit are different from the first angles of the microstructures in an adjacent reflective unit.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: February 2, 2016
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Shang-Wei Hsieh, Super Liao
  • Patent number: 9062849
    Abstract: A lighting system includes an array of domed light emitting diodes covering a surface area of a substrate and two optics for processing emitted light. The first optic includes an inner surface facing the array and an exterior surface facing away from the array. The second optic includes grooves extending away from the array. The inner surface of the first optic can form a cavity that is large relative to the array. For example, the cavity can have a volume exceeding the volume of a cube, where each side of the cube has the surface area of the array.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: June 23, 2015
    Assignee: Cooper Technologies Company
    Inventors: Landon Brooks Gennetten, Anthony Ryan Gibbs, James Richard Christ
  • Patent number: 9046239
    Abstract: An illumination device includes: a light source including a plurality of light emission elements disposed adjacent to one another and phosphors; and a lens sheet including a plurality of first prisms disposed on an optical axis of the light source and disposed concentrically around the optical axis of the light source, wherein a plurality of second prisms reaching up to an outer peripheral portion of the lens sheet is radially formed around the optical axis of the light source on a surface of the lens sheet where the first prisms are formed.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 2, 2015
    Assignee: MINEBEA CO., LTD.
    Inventor: Masaki Asai
  • Patent number: 9039252
    Abstract: The invention relates to an optical device for imparting an asymmetrical light beam. The optical device comprises a lens (10) having an exit diopter (12) having an exit surface consisting of a convex surface (16) defining a curved rear portion (18) having a first curvature and a curved front portion (19) having a second curvature different from the first curvature. Furthermore the lens (10) comprises an entry diopter (11) including at least one concave lodging (13) for lodging at least one light source, the surface of the concave lodging (13) facing at least partly the curved rear portion (18).
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: May 26, 2015
    Assignee: Koninklijkle Philips N.V.
    Inventor: Vincent Treanton
  • Patent number: 9022616
    Abstract: The disclosure relates to a lighting fixture having a base, a solid-state light source, and a lens assembly. The optic has a body with a cavity and a proximal opening. The lens assembly is coupled to the base at the proximal opening. The solid-state light source is mounted to the base and is configured to direct light into the cavity via the proximal opening. At least a portion of an interior surface of the body includes a number of elongated prisms. At least a portion of the exterior surface of the body includes a number of diffusers.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 5, 2015
    Assignee: Cree, Inc.
    Inventor: David N. Randolph
  • Publication number: 20150117026
    Abstract: Embodiments of a lamp that distributes light from one or more light emitting diode (LED) devices with an intensity distribution having a batwing appearance. These embodiments can comprise a lens having a lens body with different types of optics to achieve the preferred distribution. In one example, the lens body has a first section with optics that embody a plurality of prismatic facets and a second section with optics that form a convex shape, curving outward relative to the LED device.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicant: GE LIGHTING SOLUTIONS, LLC
    Inventors: Jeyachandrabose CHINNIAH, Thomas CLYNNE, Cherian JACOB, Benjamin Lee YODER
  • Patent number: 8905596
    Abstract: An optical lens for adjusting viewing angle of and diffusing light emitted from a light emitting diode includes a light incident surface and a light emitting surface. The light incident surface is cone-shaped and concave towards the light emitting surface. The light emitting surface is cone-shaped and concave towards the light incident surface. A plurality of annular protrusions is formed on the light incident surface. The annular protrusions are coaxial and a center of each of the annular protrusions is located at an optical axis passing through a vertex of the light emitting surface and a vertex of the light incident surface. A lighting device having the optical lens and the light emitting diode is also provided.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: December 9, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Li-Ying Wang He
  • Patent number: 8894250
    Abstract: 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: Grant
    Filed: February 27, 2012
    Date of Patent: November 25, 2014
    Assignee: Minebea Co., Ltd.
    Inventors: Masaki Asai, Koji Sakai, Ryohei Takayama
  • Patent number: 8746936
    Abstract: It is presented an optical component (5) a first side (30) and a refractive opposite side (14). The refractive side (14) presents a refractive surface (13) and has radially extending refractive structures (6) for refracting light mainly in the azimuth direction (27) of an inciding light beam. The optical component (5) can be used as an exit window in a luminaire (1) having at least one light source (4), whereby light inhomogeneity may be reduced.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: June 10, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Michel Cornelis Josephus Marie Vissenberg, Marcellinus Petrus Carolus Michael Krijn, Bastiaan Uitbeijerse
  • Patent number: 8552627
    Abstract: A retaining frame (2) having at least one optical element (3) secured thereto by injection molding, with the at least one optical element (3) being embodied for beam shaping at least by means of total internal reflection and/or diffraction.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: October 8, 2013
    Assignee: OSRAM Gesellschaft mit beschrankter Haftung
    Inventors: Peter Frey, Thomas Reiners, Ralf Vollmer
  • Patent number: 8475011
    Abstract: A lens member includes at least one of the annular prisms including a facet at an edge between an inner annular surface and an outer surface of the at least one of the annular prisms. The prisms with facets may be provided at a central portion of the lens member and the facets are configured to refract light toward a light-exit side of the lens member.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: July 2, 2013
    Assignees: Citizen Electronics Co., Ltd., Citizen Holdings Co., Ltd.
    Inventor: Yasuaki Kayanuma
  • Patent number: 8439529
    Abstract: Disclosed is a lighting device comprising at least one LED and at least one optical element, wherein the LED and the optical element are aligned with each other by means of at least one dowel pin. A method of making such a lighting device is also specified. The described lighting device is particularly well suited for use in a vehicle headlight.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: May 14, 2013
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Moritz Engl, Stefan Grötsch, Markus Hofmann, Rainer Huber, Kurt-Jürgen Lang, Joachim Reill, Michael Sailer, Mario Wanninger
  • Patent number: 8297802
    Abstract: An optical film includes a body and a plurality of first linear protrusions. The body has a first surface and a second surface opposite to the first surface. The first linear protrusions are disposed on the first surface, and each first linear protrusion is extended along a first direction and has a first curvy ridge line departing from the first surface, wherein the first curvy ridge lines are concave towards a fixed direction. When the first curvy ridge line is located on a suppositional plan, the suppositional plan is not parallel to the first surface. A ratio of a maximum distance between each of the first curvy ridge line and the first surface over a minimum distance between the corresponding first curvy ridge line and the first surface is greater than 1 but less than 8.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: October 30, 2012
    Assignee: Wintek Corporation
    Inventors: Zhi-Ting Ye, Chun-Chih Huang
  • Patent number: 8240888
    Abstract: An LED unit includes an LED and a lens receiving the LED. The LED includes a chassis, a base on the chassis and an envelope fixed on the base. The lens has two crossed grooves, a hole and a chamber sequentially defined in a bottom face the lens, along an upward direction thereof. The chassis of the LED can be selected to fit in one of the two grooves. The base of the LED is engaged in the hole of the lens, and the envelope of the LED is received in the chamber of the lens.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: August 14, 2012
    Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.
    Inventors: Hai-Wei Zhang, Yi-San Liu, Chin-Chung Chen
  • Patent number: 8220975
    Abstract: A plate-shaped lens member has concentric annular prisms each including an inner annular surface divided from a light-entrance surface of a conventional TIR lens and an outer annular surface divided from a light-reflection surface of the TIR lens in which the light-entrance surface has a concave shape provided in a lower portion of the TIR lens and the light-reflection surface has a convex shape positioned at a peripheral side of the TIR lens to surround the light-entrance surface. The light-entrance surface and light-reflection surface of the bulky TIR lens are Fresnel-ized or divided into a set of concentric annular prisms on a surface of the plate-shaped lens member and positions of divided portions from the TIR lens are efficiently arranged on the surface of the plate-shaped lens member.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: July 17, 2012
    Assignees: Citizen Electronics Co., Ltd., Citizen Holdings Co., Ltd.
    Inventors: Junji Miyashita, Yasuaki Kayanuma, Makoto Yasuhara
  • Patent number: 8197104
    Abstract: 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: Grant
    Filed: June 10, 2010
    Date of Patent: June 12, 2012
    Assignee: UP Key Light & Energy Technology Co., Ltd.
    Inventor: Jacky Chang
  • Patent number: 8197094
    Abstract: A stage lighting fixture having a casing extending along a longitudinal axis; a light source housed in a closed end of the casing to emit a light beam substantially along an optical axis; an objective lens located at an open end of the casing; and beam size adjusting means located between the light source and the objective lens to intercept the beam. The beam size adjusting means have an optical element, in turn having a first region with a first concave beam incidence surface of first beam diffusion properties, and a second region with a second concave beam incidence surface of second beam diffusion properties.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: June 12, 2012
    Assignee: Clay Paky S.p.A.
    Inventors: Pasquale Quadri, Angelo Cavenati
  • Patent number: 8172433
    Abstract: 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: Grant
    Filed: June 28, 2007
    Date of Patent: May 8, 2012
    Assignee: Osram Opto Semiconductors GmbH
    Inventor: Julius Muschaweck
  • Patent number: 8167462
    Abstract: An illumination lens including a first part being free of prismatic patterns, a second part including prismatic patterns on both sides of the first part and configured to increase light distribution in the both sides of the first part, and a lens cover covering the first and second parts with the first and second parts being disposed on a substantially same plane under the lens cover.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: May 1, 2012
    Assignee: LG Innotek Co., Ltd.
    Inventors: Eun Hwa Kim, Dong Nyung Lim, Hyun Min Kim, Sung Ho Hong
  • Patent number: 8134780
    Abstract: A prism includes a light incident portion that has first and second convex portions, the first and second convex portions each are a convex portion that refracts rays of light incident to a prism body and reduces a spread angle after incidence to the prism body via the convex portion to be smaller than that before the incidence, the spread angle is an angle between a given two of the rays, a first reflecting surface, provided on the prism body, that can reflect a first ray of light that has entered the prism body via the first convex portion, a first emitting portion, provided on the prism body, that emits, to the outside, the first ray reflected by the first reflecting surface, and a second emitting portion that emits, to the outside, a second ray of light that has entered the prism body via the second convex portion.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: March 13, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Ominato, Takeshi Kitakata, Shunsuke Ichizawa
  • Patent number: 8128260
    Abstract: A spread lens including a first lens surface through which the emitted light from the light emitting device is inputted; a second lens surface spreading the inputted light to an outside; refraction parts which extend between both side ends of each of the first and second lens surfaces, are formed in a concave-convex shape, and refract the emitted light from the light emitting device; and support parts which extend at both side ends of the second lens surface and separate the refraction parts and the light emitting device from each other.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: March 6, 2012
    Assignee: Samsung LED Co., Ltd.
    Inventor: Tetsuo Ariyoshi
  • Patent number: 8075167
    Abstract: An optical film and an illuminating device having the optical film are provided. The optical film may include a first surface including a plurality of peaks and valleys formed from the plurality of peaks, a second surface opposite the first surface and a plurality of scattering patterns on the second surface. One of the scattering patterns may correspond to 3 to 6 peaks of the plurality of peaks on the first surface.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: December 13, 2011
    Assignee: LG Electronics Inc.
    Inventor: Yong Shu Shin
  • Patent number: 8070343
    Abstract: A light pipe is configured to provide a wide effective angle of illumination while simultaneously providing a substantially uniform distribution of light along a length of the light pipe. One or more reflective surfaces not aligned with an inner surface are disposed such that when at least one reflective surface is illuminated, light is emitted from the light pipe at one or more specified angles of light emission. A plurality of reflection points are formed on the inner surface to cause the specified angles when at least one of the reflective surfaces is illuminated. A light pipe is also provided having one or more exterior protrusions configured to function as a secondary light source. A second portion of an outer surface of the light pipe has a radius of curvature which differs from the radius of curvature of the first portion of the outer surface.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: December 6, 2011
    Assignee: Tyco Electronics Canada ULC
    Inventors: Kazuhiro Goto, Dragos Luca, Salvatore Alesio
  • Patent number: 8057073
    Abstract: A light pipe and an illuminating device having the light pipe are provided. The light pipe may include an optical film in a rolled shape to have a hollow conduit and a supporter surrounding a surface of the optical film. The supporter may have at least one of a protrusion and an indentation on a surface of the supporter.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: November 15, 2011
    Assignee: LG Electronics Inc.
    Inventor: Hwan Hee Lee
  • Patent number: 7938570
    Abstract: A quick-release mounting mechanism for a worklight enabling the worklight to be quickly and easily mounted on and demounted from a tripod support stand and enabling an individual worklight head to be quickly and easily mounted on and demounted from a base stand or other support member such as the handle of a spring clamp or other clamp member. The mounting mechanism includes a latch member on the worklight base or on an individual worklight head that cooperates with an actuator mounted in the support stand or other support member. The latch member is received in a hole in the support and the actuator is formed to engage a catch on the latch member when the worklight or individual worklight head is in position on the support.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: May 10, 2011
    Assignee: EML Technologies LLC
    Inventors: Wade Lee, Donald R. Sandell
  • Patent number: 7901108
    Abstract: 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: Grant
    Filed: April 2, 2009
    Date of Patent: March 8, 2011
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Kiyoyuki Kabuki, Hiroshige Hata
  • Patent number: 7866855
    Abstract: 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: Grant
    Filed: December 2, 2005
    Date of Patent: January 11, 2011
    Assignee: ABL IP Holding LLC.
    Inventor: Yaser S. Abdelsamed
  • Publication number: 20100284191
    Abstract: The invention relates to a special headlight lens and a special lamp provided with said headlight lens having low energy consumption, low diffused light loss and a rectangular light field. The invention further relates to the range of possible applications for the professional lighting of large areas or as component of beamers, projectors, and medical luminaires.
    Type: Application
    Filed: September 17, 2008
    Publication date: November 11, 2010
    Applicant: IMC EST.
    Inventor: Daniel Duchowicz
  • Patent number: 7819560
    Abstract: 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: Grant
    Filed: April 24, 2007
    Date of Patent: October 26, 2010
    Assignee: Enplas Corporation
    Inventor: Shingo Ohkawa
  • Publication number: 20100259939
    Abstract: A brightness enhancement film having a composite lens and prism structure is described. The brightness enhancement film having a composite lens and prism structure includes a substrate layer and a composite structure layer. The substrate layer has an optical incident surface and an optical emission surface. The composite structure layer is positioned on the optical emission surface of the substrate layer and has a lens-type layer and a prism-type layer. The lens-type layer has a plurality of protrusion units and the prism-type layer has a plurality of prismatic units. The protrusion units are uniformly arranged among the prismatic units. An area ratio of the region of the protrusion units to the region of the prismatic units based on a predetermined unit area of the composite structure layer can be changed for adjusting a convergent angle when a light beam penetrates through the composite structure layer via the optical emission surface of the substrate layer.
    Type: Application
    Filed: November 24, 2009
    Publication date: October 14, 2010
    Applicant: DAYU optoelectronics
    Inventors: Chi-feng Chen, Jauh-jung Yang
  • Patent number: 7802893
    Abstract: In one embodiment, a backlight assembly comprises: a bulb having a bulb first side and a bulb second side located on a side of the bulb opposite the first side, a reflector plate disposed on the bulb first side, and a front bulb reflector disposed over the bulb second side. The front bulb reflector has a partially reflective member capable of reflecting greater than or equal to 60% of light from the bulb toward the reflector plate, and an inner surface on a reflector second side located opposite the reflector first side. The overall geometry of the front bulb reflector is concave on the reflector second side and convex on the reflector first side.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: September 28, 2010
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventors: John Frederick Graf, Dennis Joseph Coyle
  • Patent number: 7798679
    Abstract: 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 by
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: September 21, 2010
    Assignees: Sharp Kabushiki Kaisha, Enplas Corporation
    Inventors: Fumio Kokubo, Masao Yamaguchi
  • Patent number: 7748874
    Abstract: A light pipe and an illuminating device having the light pipe are provided. The light pipe includes an optical film including a plurality of prisms and being rolled to have a cavity extending along a longitudinal direction of the prisms; and a supporter surrounding the optical film having the cavity, wherein a side surface of one of the prisms has the maximum surface roughness of about 600 nm to about 1.5 ?. Accordingly, it is possible to emit a light toward a distant area through the diffraction of light and thus to provide uniform luminance.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: July 6, 2010
    Assignee: LG Electronics Inc.
    Inventor: Han Kyu Cho
  • Patent number: 7712930
    Abstract: An optical module for projecting a light beam comprises a solid body of transparent material into which a light source is sunk and which is delimited by an annular surface and by a central surface, and a substantially annular reflecting surface arranged around the solid body. The central and annular surfaces are suitable for receiving respective distinct portions of the luminous flux produced by the source. The reflecting surface may have a reflecting coating or may form part of a transparent body, in which case it works by total internal reflection. The reflecting surface reflects a portion of luminous flux refracted by the annular surface and shapes the flux into a predetermined distribution of luminous intensity about the principal axis. The annular surface is designed in a manner such as to reduce the overall thickness of the module by moving the refracted ray away from the principal axis.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: May 11, 2010
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Piermario Repetto, Denis Bollea, Stefano Bernard, Davide Capello
  • Patent number: 7641365
    Abstract: An optical element including a unitary, non-circularly-symmetrical, piece of optically-transmissive material, which has at least first and second surfaces for concentrating light from a light source onto a linear target region, such that at least one of the first and second surfaces is curved, and such that a first portion of the light is concentrated onto the linear target region by reflection from the first surface, while a second portion of the light is concentrated onto the linear target region by refraction at the second surface.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: January 5, 2010
    Assignee: Orbotech Ltd
    Inventors: Yigal Katzir, Elie Meimoun
  • Patent number: 7621658
    Abstract: A light-emitting module is specified that comprises a light source, a carrier for said light source, and an optical element, wherein the optical element comprises dowel pins that engage in corresponding recesses in the carrier. The light-emitting module is particularly well suited for use in optical projection apparatuses and in motor vehicle projection lamps.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: November 24, 2009
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Stefan Grötsch, Moritz Engl, Florin Oswald, Michael Sailer, Alexander Wilm
  • Patent number: 7618162
    Abstract: An illumination-redistribution lens comprising a thick aspheric lens collecting a high proportion of the luminous output of a compact LED with a quasi-hemispheric pattern. After receiving the highly nonuniform illuminance from the nearby LED, the lower surface refractively deflects these rays into a less diverging angular pattern that results in uniform illuminance on the upper surface of the lens, which itself is shaped so its distribution of slope angles refractively deflects the uniform illuminance distribution into an exiting beam that will produce uniform illuminance on a distant target, such as a table below a ceiling-mounted unit. When square-cut sections of such lenses are laterally arrayed to form a downlight, a uniform rectangular spot will be produced on the target.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: November 17, 2009
    Assignee: InteLED Corp.
    Inventors: William A. Parkyn, David G. Pelka
  • Patent number: 7618161
    Abstract: In a Fresnel lens which is made of a lens material whose refraction index is n, and focuses light beam from a light source at a specified radiation view angle ?, and has plural N pieces of circular lens surfaces arranged concentrically around a common optical axis, and plural circular rise surfaces arranged adjacent alternately between these lens surfaces, and two lens surfaces adjacent via at least one of the rise surfaces are concave surfaces, and tangent lines and at the intersecting point with the rise surfaces of the shape of a cross section passing through the optical axis of those lens surfaces intersect at the outside with respect to the optical axis, and when the angle formed between these tangent lines is defined as ?, a relational equation ???/(2 n N) stands.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: November 17, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeshi Morino, Yoshinori Honguh, Masataka Shiratsuchi, Naoto Tokuhara
  • Publication number: 20090279305
    Abstract: A light pipe and an illuminating device having the light pipe may be provided. The light pipe may include an optical film having a glass transition temperature of approximately 110° C. to approximately 180° C.
    Type: Application
    Filed: November 10, 2008
    Publication date: November 12, 2009
    Inventor: Sang Hoon LEE
  • Publication number: 20090279302
    Abstract: A light pipe and an illuminating device having the light pipe are provided. The light pipe may include an optical film in a rolled shape to have a hollow conduit and a supporter surrounding a surface of the optical film. The supporter may have at least one of a protrusion and an indentation on a surface of the supporter.
    Type: Application
    Filed: November 10, 2008
    Publication date: November 12, 2009
    Inventor: Hwan Hee Lee
  • Patent number: 7585097
    Abstract: A light pipe is configured to provide a wide effective angle of illumination while simultaneously providing a substantially uniform distribution of light along a length of the light pipe. One or more reflective surfaces not aligned with an inner surface are disposed such that when at least one reflective surface is illuminated, light is emitted from the light pipe at one or more specified angles of light emission. A plurality of reflection points are formed on the inner surface to cause the specified angles when at least one of the reflective surfaces is illuminated. A light pipe is also provided having one or more exterior protrusions configured to function as a secondary light source. A second portion of an outer surface of the light pipe has a radius of curvature which differs from the radius of curvature of the first portion of the outer surface.
    Type: Grant
    Filed: March 19, 2006
    Date of Patent: September 8, 2009
    Assignee: Tyco Electronics Canada ULC
    Inventors: Kazuhiro Goto, Dragos Luca, Salvatore Alesio
  • Publication number: 20090219723
    Abstract: A brightness enhancement film comprising a plurality of closely arranged lens microstructures. Each lens microstructure has a cross section having an apex and two included side faces. At least one of the side faces forms a curved surface. The brightness enhancement film not only realizes light condensation but also optimizes brightness and viewing angle by means of the curved surface formed on at least one of the side faces of the cross section thereof.
    Type: Application
    Filed: March 3, 2008
    Publication date: September 3, 2009
    Inventor: Dong-Yih Liou
  • 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: 7510305
    Abstract: A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned and a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies the light source and such that substantially all of the light emitted from the light source passes through the lens assembly. In one aspect, the reflector assembly defines a plurality of air slots.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: March 31, 2009
    Assignee: ABL IP Holding LLC
    Inventors: Kenneth G. Straton, John T. Mayfield, III
  • Patent number: 7506988
    Abstract: An illumination apparatus is disclosed in which its efficiency as an optical system can be improved by effectively utilizing the luminous flux that was not used in conventional illumination apparatuses, and the positional relationship between a light source and an optical member can be set with accuracy. The illumination apparatus comprises a light source, and an optical member having a refractive surface on a side closer to an irradiation range than the light source. The optical member includes a holding portion which holds the light source.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: March 24, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshiharu Tenmyo
  • Patent number: 7465074
    Abstract: An optical element is specified that comprises a radiation exit surface shaped so that light exiting through said radiation exit surface is suitable for substantially uniformly illuminating a defined area from a defined distance. The optical element is particularly well suited for use in emergency lighting systems.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: December 16, 2008
    Assignee: Osram Opto Semiconductors GmbH
    Inventor: Simon Blümel
  • Patent number: 7401948
    Abstract: A near field lens for an automotive light assembly which has a reduced thickness. Generally, the near field lens includes a main body of light transmitting material. A pocket is formed in the main body for receiving light from a light source. The pocket is defined by an inner radially facing surface and an inner axially facing surface. The inner radially facing surface is structured to reduce the thickness of the lens.
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: July 22, 2008
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Jeyachandrabose Chinniah, Amir P. Fallahi, Jeffrey Allen Erion, Edwin Mitchell Sayers, Thomas Lee Jones
  • Patent number: 7306351
    Abstract: A light emitting device includes an LED package bases, an LED chip disposed on the LED package base, and a lens disposed on the LED package base. The lens includes a frustum shape having an inclined outer peripheral surface, and having a relatively smaller lower portion for attaching onto the LED package base, and having a relatively greater upper portion spaced away from the LED package base, the lens includes a longitudinal axis arranged to have an included angle ? formed between the longitudinal axis and the inclined outer peripheral surface of the lens, for reflecting light sidewise. The lens may include a curved recess formed in the upper portion for such as light diffusing purposes.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: December 11, 2007
    Assignee: Chung Yuan Christian University
    Inventors: Chang Po Chao, Lun De Liao, Cho Wei Chiu
  • Patent number: 7296910
    Abstract: A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned; a housing defining at least one selectively enclosable ballast enclosure; and a ballast that is positionable in the at least one ballast enclosure.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: November 20, 2007
    Assignee: Acuity Brands, Inc.
    Inventors: John T. Mayfield, III, Stephen H. Lydecker, Gary D. Trott, Carl T. Gould, Kevin Leadford, Christopher L. Sharp
  • Patent number: 7229192
    Abstract: A light fixture or troffer for directing light emitted from a light source toward an area to be illuminated, including a reflector assembly within which the light source is positioned and a lens assembly detachably secured to a portion of the reflector assembly such that a lens of the lens assembly overlies the light source and such that substantially all of the light emitted from the light source passes through the lens assembly. In one example, the lens includes a curved prismatic surface that can be oriented toward or away from the underlying light source.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: June 12, 2007
    Assignee: Acuity Brands, Inc.
    Inventors: John T. Mayfield, III, Stephen H. Lydecker, Gary D. Trott, Carl T. Gould, Kevin Leadford, Christopher L. Sharp