Patents Examined by Fatima N Farokhrooz
  • Patent number: 11997768
    Abstract: An LED filament comprising a plurality of LED filament units, each of the plurality of LED filament units includes a LED chip with an upper surface and a lower surface opposite to the upper surface of the LED chip, and a light conversion layer comprising a top layer and a base layer, and the base layer comprises an upper surface and a lower surface opposite to the upper surface of the base layer, where the top layer with an upper surface and a lower surface opposite to the upper surface of the top layer is disposed on at least two sides of each of the LED chips, the lower surface of each of the LED chips is close to the upper surface of the base layer, and the upper surface of the top layer is away from each of the LED chips.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: May 28, 2024
    Assignee: ZHEJIANG SUPER LIGHTING ELECTRIC APPLIANCE CO., LTD
    Inventors: Tao Jiang, Wei-Hong Xu, Yukihiro Saito, Hayato Unagiike, Ai-Ming Xiong, Jun-Feng Xu, Yi-Ching Chen
  • Patent number: 11993981
    Abstract: A visibility control device includes one or more light sources to provide input light, a waveguiding substrate, which has a first major surface and a second major surface, and a plurality of light-deflecting grooves implemented on at least one major surface of the substrate. The device is arranged to form guided light by coupling the input light into the substrate, The grooves are arranged to form deflected light by coupling the guided light out of the substrate through the second major surface of the substrate.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: May 28, 2024
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Teemu Ruotsalainen, Tapio Mäkelä, Asko Sneck
  • Patent number: 11971569
    Abstract: There is provided a light emitting device that can be used as a light guide plate and has an excellent antireflection function to extraneous light, and an optical body includes: a base material; a macro concave-convex structure that is formed on one surface of the base material and emits internally propagating light that is injected in an inside of the base material from a side surface of the base material, from another surface of the base material; and a micro concave-convex structure formed periodically to follow each of both surfaces of the base material and a surface of the macro concave-convex structure, and having an average period of concavity and convexity of less than or equal to a wavelength of visible light. The surface of the macro concave-convex structure has an inclined surface, and an arrangement of the micro concave-convex structure is a zigzag arrangement.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: April 30, 2024
    Assignee: DEXERIALS CORPORATION
    Inventors: Shunichi Kajiya, Kyoko Sakurai, Katsuhiro Doi, Kazuya Hayashibe, Naoki Hanashima, Naoto Kaneko
  • Patent number: 11966070
    Abstract: A light guide (1) for a lighting device (8) is provided. The light guide (1) comprises an incoupling element (2) configured for receiving light and coupling the received light into the light guide (1). The light guide (1) is configured to convey the received light within the light guide (1). The light guide (1) comprises at least a first group and a second group of conically shaped outcoupling surface structures (3) distributed on, and recessed into or protruding from, a side (4) of the light guide (1). Each conically shaped outcoupling surface structure (3) is configured for coupling of light out of the light guide (1). Further, each conically shaped outcoupling surface structure (3) of the first group is geometrically characterized by a shape in accordance with a first cone or conical frustum (5) and each conically shaped outcoupling surface structure (3) of the second group is geometrically characterized by a shape in accordance with a second cone or conical frustum (6).
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: April 23, 2024
    Assignee: SIGNIFY HOLDING, B.V.
    Inventors: Barry Mos, Michel Cornelis Josephus Marie Vissenberg, Olexandr Valentynovych Vdovin, Johannes Petrus Maria Ansems, Hugo Johan Cornelissen
  • Patent number: 11940645
    Abstract: A front light module includes a reflective display device, a front light guide, and a light emitting unit plate. The front light guide plate includes a micro-structure. The micro-structure has a first angle between a surface thereof close to the light emitting unit and an upper surface of the front light guide plate. The micro-structure has a second angle between a surface thereof away from the light emitting unit and the upper surface of the front light guide plate. The micro-structure has a third angle between the surface thereof close to the light emitting unit and the surface thereof away from the light emitting unit. The first angle is within a range between 30 degrees and 60 degrees, the second angle is within a range between 30 degrees and 59 degrees, and the third angle is greater than 90 degrees.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: March 26, 2024
    Assignee: DARWIN PRECISIONS CORPORATION
    Inventors: Chun-Te Wang, Yu-Shan Shen, Yen-Lung Chen
  • Patent number: 11940647
    Abstract: Light control body (6) has first incident surface (7) and first reflection surface (9). First incident surface (7) condenses part of light emitted from light source (1) and emits the light toward incident surface (3) of light guide plate (2). First reflection surface (9) reflects the light that is emitted from light source (1) and does not pass through first incident surface (7), and emits the light toward incident surface (3) of light guide plate (2). First focal position (11) of first incident surface (7) and second focal position (12) of first reflection surface (9) are set at positions that are different from each other and away from the light emission surface of light source (1).
    Type: Grant
    Filed: August 1, 2023
    Date of Patent: March 26, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yosuke Araki, Wahei Agemizu, Kazumasa Takata, Masaru Fujita
  • Patent number: 11929217
    Abstract: A light emitting keyboard includes a frame having a translucent frame body, a plurality of key modules each having a keycap, and a backlight module including a light source circuit board, a first light guide plate disposed on top of the light source circuit board, a second light guide plate disposed under the light source circuit board, a plurality of first light-emitting members extending upwardly through the first light guide plate, a plurality of second light-emitting members extending downwardly through the second light guide plate, and a reflector plate disposed under the second light guide plate. Light emitted from the first light-emitting members is transmitted in the first light guide plate and projects upwardly onto the keycaps. Light emitted from the second light-emitting members is transmitted in the second light guide plate is reflected by the reflector plate, and projects onto the frame body.
    Type: Grant
    Filed: September 7, 2023
    Date of Patent: March 12, 2024
    Assignee: Sunrex Technology Corp.
    Inventors: Hua Huang, Jian-Guo Guo
  • Patent number: 11927340
    Abstract: A reflective device and a light source module are provided. The reflective device is transparent, which includes a light entrance, a light exit, and a reflective wall between the light entrance and the light exit. The light entrance is smaller than the light exit, and the reflective wall includes an inner surface and an outer surface, the inner surface including a plurality of sawtooth structures arranged continuously, each of the sawtooth structures including a first refractive surface and a second refractive surface which are intersected with each other, two ends of each of the sawtooth structures being respectively extended toward the light entrance and the light exit. The light source module provided by the present disclosure adopts the above-mentioned reflective device, the reflective device being transparent, the inner surface of the reflective device including the plurality of sawtooth structures arranged continuously.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: March 12, 2024
    Assignee: OPPLE LIGHTING CO., LTD.
    Inventor: Chaobo Liu
  • Patent number: 11906771
    Abstract: Embodiments of the disclosure relates to a light-diffusing element. The light diffusing element includes a glass core having a first refractive index. The light diffusing element also includes a cladding surrounding the glass core. The cladding includes an inner cladding surface and an outer cladding surface. The inner cladding surface and the outer cladding surface define a cladding thickness of from 5 ?m to 30 ?m. The cladding has a second refractive index that is less than the first refractive index of the glass core. The light diffusing element also includes a coating surrounding the cladding. The coating has an inner coating surface and an outer coating surface. The inner coating surface contacts the outer cladding surface. The outer coating surface defines an outermost surface of the light-diffusing element, and the coating includes first scattering centers.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: February 20, 2024
    Assignee: Corning Incorporated
    Inventors: Kevin Wallace Bennett, Stephan Lvovich Logunov
  • Patent number: 11899235
    Abstract: Aspects of embodiments pertain to a display illumination optics for illuminating an image display device of an image generation apparatus, the display illumination optics comprising: a source illumination distributor that includes an illumination waveguide having a front surface and a back surface opposite the front surface and configured to internally direct light along a main direction, wherein the illumination waveguide is configured to distribute the luminance of input illumination light along the main direction of the display illumination optics to obtain, along the main direction, output illumination light of desired luminance.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: February 13, 2024
    Assignee: ELBIT SYSTEMS LTD.
    Inventors: Yosef Arazi, Amitay Rudnick, Assaf Levy-Beeri, Olga Resnik, Dror Oskar
  • Patent number: 11898737
    Abstract: A light fixture may include a caged frame that includes spokes enclosing a globe. The frame may be configured to enable removal of one or more of the spokes to create clearance for replacement of a broken globe. The frame may include one or more frame bases. Each frame base may include inner and outer supports that retain ends of spokes therebetween when the fixture is assembled. The outer support may be configured to retain some spoke ends in a manner that may require a tool to remove them from the outer support. The inner support may be configured to enable one or more spoke ends to be removed from the inner support without a tool. The frame bases may be loosened to remove one or more removable spokes to create a temporarily larger clearance in the frame for globe replacement.
    Type: Grant
    Filed: July 3, 2023
    Date of Patent: February 13, 2024
    Assignee: W Schonbek LLC
    Inventors: Roslyn Yando, Chad Recore
  • Patent number: 11880016
    Abstract: A light emitting device includes multiple light source parts each including at least one first light source part and at least one second light source part, each including a light emitting element and a light-guiding member to guide light of the light emitting element. Each light-guiding member has a taper shape narrowing toward the light emitting element. Light from each light source part satisfies condition of ????tan?1×2 tan ?. (? is an angle of a straight line connecting a position on the light-irradiation surface having an illuminance of at least one-half of that at center position and the center of the light emitting surface of the first light source part, and ? is an angle of a straight line connecting a center of a light-irradiation region on a light-irradiation surface and a center of the light emitting surface of the second light source part.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: January 23, 2024
    Assignee: NICHIA CORPORATION
    Inventors: Yoshinori Shinohara, Kosuke Gomi
  • Patent number: 11874431
    Abstract: A diffuser generates scattered light and satisfies MFP=1/(?×A2×Qs×N)=?Zd, 0.4???5 where N denotes a number of nanoparticles included in a unit volume of a light guiding and diffusing portion, A denotes an average particle radius of the nanoparticles, Qs denotes a scattering efficiency determined by a combination of the nanoparticles and a medium of the light guiding and diffusing portion, MFP denotes a mean free path for light of a design wavelength set in a range of 450 nm to 650 nm, Zd denotes a length of the light guiding and diffusing portion in a light guiding direction of incident light, and a denotes a coefficient.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: January 16, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Fujii, Satoru Okagaki
  • Patent number: 11859797
    Abstract: The present disclosure discloses a novel lamp holder structure. A lamp holder shell of the novel lamp holder structure comprises a shell main body and a lamp holder top cover arranged at the upper end of the shell main body, a bulb installation hole is formed in the shell main body, a main body installation part located above the bulb installation hole is arranged at the upper end of the shell main body, a wire placing groove is formed in the middle of the main body installation part, a top cover wire pressing part is arranged in the middle of the lamp holder top cover. By means of the structural design, the present disclosure has the advantages of being novel in design, simple in structure and convenient and fast to wire.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: January 2, 2024
    Inventor: Xinjiang Zou
  • Patent number: 11852854
    Abstract: An embodiment of a display device includes a substrate, a first light-emitting element, and a light control layer. The substrate includes a display area and a peripheral area adjacent to the display area, and the display area includes a light-emitting area and a light-blocking area. The first light-emitting element is disposed in the light-emitting area on the substrate and emits a first light having a first wavelength range. The light control layer is disposed on the first light-emitting element, and defines an opening exposing a portion of the light-emitting area. The light control layer includes a photochromic material such that in operation a second light having a second wavelength range different from the first wavelength range applied to the light control layer discolors the light control layer.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: December 26, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youngchan Kim, Jaeho You, Jeongwoo Park, Hyun Jin Cho
  • Patent number: 11846751
    Abstract: A disk of transparent material having a bottom surface that is smooth and flat. The disk has a top surface that is parallel with the bottom surface and has four regions. The first region is disk-shaped and frosted, the second region surrounds the first region and comprises a smooth and flat surface interrupted by an array of dots. The third region surrounds the second region and is smooth and flat. The fourth region surrounds the third region and is beveled so as to be sloped downward, from the third region toward the bottom, to form a beveled edge.
    Type: Grant
    Filed: November 22, 2022
    Date of Patent: December 19, 2023
    Inventor: Tiejun Wang
  • Patent number: 11841525
    Abstract: A lighting device disclosed in an embodiment of the invention includes a substrate; a plurality of light emitting devices on the substrate; a first reflective layer on the substrate; a resin layer on the first reflective layer and including a first surface from which light emitted from the light emitting device is extracted; a second reflective layer on the resin layer; and a light extraction layer on the first surface of the resin layer, wherein the first surface of the resin layer has a convex portion having a convex exit surface facing to each of the light emitting devices, and concave portions between the convex portions, and the light extraction layer may include a first extraction portion having protrusions on each exit surface, and second extraction portions concave between the plurality of protrusions.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: December 12, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Dong Hyun Lee, Moo Ryong Park, Young Jae Choi
  • Patent number: 11820284
    Abstract: A vehicle illumination device includes a light source and a long light guide body that extends linearly in a direction of entry of light from one end thereof disposed so as to be adjacent to the light source and radiates light from a linear light-emitting face, the light guide body having formed thereon projecting parts arranged in a longitudinal direction on a back face of the light-emitting face and extending in a direction orthogonal to the direction of entry of light. The widths of the projecting part vary in accordance with the distance from the light source. Provided is a vehicle illumination device that enables light emission with uniform luminance in the longitudinal direction to be realized while improving the productivity of a light guide body.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: November 21, 2023
    Assignee: TS TECH CO., LTD.
    Inventors: Kenta Kasuya, So Ono, Tomoya Takahashi, Manabu Mihira
  • Patent number: 11808967
    Abstract: A light deflecting device including a flat, transparent light guide, and a transparent cover layer which is applied to the light guide at least partially in a flat manner. A microstructure for outcoupling light coupled into the light guide is formed between the light guide and the cover layer and the microstructure has a plurality of structural elements which are formed as substantially circular cylindrical elevations. A lighting device and the use of the light deflecting device or lighting device are also disclosed.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: November 7, 2023
    Assignee: temicon GmbH
    Inventors: Andreas Neyer, Helmut Frank Ottomar Müller
  • Patent number: 11808964
    Abstract: A front light module applied to full lamination includes a display, a front light guide plate, a light-emitting unit, a transparent medium, and a cover layer. The front light guide plate is located over the display and includes a micro-structure. The micro-structure is recessed from an upper surface of the front light guide plate. The light-emitting unit is adjacent to the front light guide plate. The transparent medium is located over the front light guide plate. A space is located between the front light guide plate and the transparent medium. The cover layer is located over the transparent medium.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: November 7, 2023
    Assignee: DARWIN PRECISIONS CORPORATION
    Inventors: Yu-Shan Shen, Yu-Hsiang Hsieh, Chien-Ming Chu, Hui-Ying Chiang