公开(公告)号：US12169299B2

公开(公告)日：2024-12-17

申请号：US18507017

申请日：2023-11-10

Applicant: NICHIA CORPORATION

Inventor： Seitaro Akagawa ,  Takuya Nakabayashi ,  Masato Okuda ,  Yasunori Shinomiya

IPC: F21V8/00

Abstract: A planar light source includes a support member; a light guide member including a first surface located proximate to an upper surface of the support member, a second surface opposite to the first surface, and a through hole extending from the first surface to the second surface; a light source unit including a light-emitting element and a wavelength conversion member that covers an upper surface and a lateral surface of the light-emitting element and disposed on the support member at a position of the through hole; a light-transmissive member disposed between the light source unit and the light guide member in the through hole; and a light adjustment member disposed on the light source unit and the light-transmissive member. An upper surface of the wavelength conversion member of the light source unit is located higher than the second surface of the light guide member.

公开(公告)号：US11892670B2

公开(公告)日：2024-02-06

申请号：US17972879

申请日：2022-10-25

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Toru Hashimoto ,  Keiji Emura

IPC: F21V8/00 ,  F21V13/14 ,  F21Y105/16 ,  F21V7/00 ,  G02F1/13357

CPC classification number: G02B6/0021 ,  F21V7/0091 ,  F21V13/14 ,  F21Y2105/16 ,  G02B6/0038 ,  G02F1/133603 ,  G02F1/133605 ,  G02F1/133606

Abstract: A light emitting module including: a light guide member including: an emission region defined by a sectioning groove, a light source placement part located in the emission region, and a light adjusting hole; and a light source disposed in the light source placement part. In the schematic top view: the light adjusting hole is not positioned on a first straight line connecting (i) a center of the light source and (ii) a point in the sectioning groove that is farthest from the center of the light source, and a first lateral face of the light adjusting hole has a first region, and a line normal to the first region is oblique to a second straight line connecting (i) the center of the light source and (ii) a point in the sectioning groove that is closest to the center of the light source.

公开(公告)号：US11605617B2

公开(公告)日：2023-03-14

申请号：US17039044

申请日：2020-09-30

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Yukiko Yokote

IPC: H01L25/075 ,  H01L33/62 ,  H01L33/54 ,  H01L33/50 ,  H01L33/48 ,  H01L33/64

Abstract: A light emitting device includes: a substrate including a base member including an upper surface, a lower surface and one or more lateral surfaces, and defining a recess that is opened at the upper surface and the lateral surfaces and surrounds an outer perimeter of the upper surface; a first light emitting element; a second light emitting element; a light guide member covering the first and the second light emitting elements and the upper surface of the base member; and a first reflective member having a closed-ring shape surrounding the upper surface of the base member and the light guide member, a portion of the first reflective member being located in the recess. At least one of the lateral surfaces of the base member and corresponding at least one of one or more outer lateral surfaces of the first reflective member are in the same plane.

公开(公告)号：US11598913B2

公开(公告)日：2023-03-07

申请号：US17305185

申请日：2021-07-01

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Daisuke Kasai ,  Takao Nakauchi

IPC: F21V8/00

Abstract: A light-emitting module includes: a plurality of light sources; and a lightguide plate including a plurality of light source placement sections, in each of which at least one light source is arranged, arrayed in a first direction and a second direction orthogonal to the first direction. The lightguide plate defines at least one first-A light control groove and at least one first-B light control groove that extend parallel to the second direction between a first light source placement section and a second light source placement section adjacent to the first light source placement section in the first direction, and at least one second-A light control groove and at least one second-B light control groove that extend parallel to the first direction between the first light source placement section and a third light source placement section adjacent to the first light source placement section in the second direction.

公开(公告)号：US11264542B2

公开(公告)日：2022-03-01

申请号：US15965415

申请日：2018-04-27

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Tomokazu Maruyama ,  Tetsuya Ishikawa

IPC: H01L33/00 ,  H01L33/50 ,  H01L33/36 ,  H01L33/56 ,  H01L33/62 ,  H01L33/34 ,  H01L33/60 ,  H01L33/48

Abstract: A light-emitting device includes a substrate comprising a base member, a first wiring, a second wiring, and a via hole; at least one light-emitting element electrically connected to and disposed on the first wiring; and a covering member having light reflectivity and covering a lateral surface of the light-emitting element and a front surface of the substrate. The base member defines a plurality of depressed portions separated from the via hole in a front view and opening on a back surface and a bottom surface of the base member. The substrate includes a third wiring covering at least one of inner walls of the plurality of depressed portions and electrically connected to the second wiring. A depth of each of the plurality of depressed portions defined from the back surface toward the front surface is larger on a bottom surface side than on an upper surface side of the base member.

公开(公告)号：US11201266B2

公开(公告)日：2021-12-14

申请号：US16883288

申请日：2020-05-26

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Tadaaki Ikeda

IPC: H01L33/48 ,  H01L33/62 ,  H01L33/60 ,  H01L33/44 ,  H01L33/50 ,  H01L25/075

Abstract: A light-emitting device includes a substrate including a base member having an upper surface having a substantially rectangular shape, a lower surface opposite to the upper surface, a first longer lateral surface, a second longer lateral surface opposite to the first longer lateral surface, a first shorter lateral surface, and a second shorter lateral surface opposite to the first shorter lateral surface, first wirings disposed on the upper surface, and second wirings disposed on the lower surface and each electrically connected with a respective one of the first wirings; at least one light-emitting element; and a light-reflective covering member covering lateral surfaces of the light-emitting element and the upper surface of the base member. The base member has at least one first recess open at the upper surface and the first longer lateral surface. Surfaces defining the at least one first recess are covered with the covering member.

公开(公告)号：US10892393B2

公开(公告)日：2021-01-12

申请号：US16945538

申请日：2020-07-31

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Akira Hori

IPC: H01L33/48 ,  H01L33/64 ,  H01L33/32 ,  H01L33/50 ,  H01L33/54 ,  H01L33/62 ,  H01L33/56 ,  H01L33/60 ,  H01L25/075

Abstract: A light emitting device includes a substrate, a light emitting element, a light transmissive member and a sealing member. The substrate includes an insulating base material, connection terminals, and external connection sections. The insulating base material has a first main surface, a second main surface, and a mounting surface. The connection terminals are disposed on the first main surface. The external connection sections are disposed on the second main surface. Each of the external connection sections has a narrow-width region and a wide-width region. The light emitting element has a pair of electrodes connected to element connection sections of the pair of connection terminals. The light transmissive member is disposed on an upper surface of the light emitting element. The sealing member covers at least a part of a side surface of the light emitting element and at least a part of the light transmissive member.

公开(公告)号：US10854790B2

公开(公告)日：2020-12-01

申请号：US16229409

申请日：2018-12-21

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Tadaaki Ikeda ,  Toru Hashimoto ,  Yukiko Yokote

IPC: H01L33/50 ,  H01L25/075 ,  H01L33/58 ,  H01L33/62 ,  H01L33/64 ,  C09K11/61 ,  H01L33/60

Abstract: A light emitting device includes a first light emitting element including a rectangular first light extraction surface, a second light emitting element including a rectangular second light extraction surface and emitting light having an emission peak wavelength different from an emission peak wavelength of the first light emitting element, and a light-transmissive member covering the first light extraction surface and the second light extraction surface. The light-transmissive member includes a first light-transmissive layer facing the first light extraction surface and the second light extraction surface, a wavelength conversion layer located on the first light-transmissive layer, and a second light-transmissive layer located on the wavelength conversion layer. The first light-transmissive layer contains a first matrix and first diffusive particles. The wavelength conversion layer contains a second matrix and wavelength conversion particles. The second light-transmissive layer contains a third matrix and second diffusive particles.

公开(公告)号：US10734563B2

公开(公告)日：2020-08-04

申请号：US16729319

申请日：2019-12-28

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi ,  Akira Hori

IPC: H01L33/48 ,  H01L33/64 ,  H01L33/60 ,  H01L33/32 ,  H01L33/56 ,  H01L33/50 ,  H01L33/54 ,  H01L33/62 ,  H01L25/075

Abstract: A light emitting device includes a substrate, a light emitting element and a light transmissive member. The substrate includes an insulating base material having a first main surface, a second main surface that is opposite from the first main surface, and a mounting surface that is adjacent to at least the second main surface, a pair of connection terminals disposed on the first main surface, a heat dissipation terminal disposed on the second main surface, and having a narrow part and a wide part with a width of the wide part being wider than a width of the narrow part, and a pair of vias connecting the connection terminals and the heat dissipation terminal. The light emitting element has a pair of electrodes which connect to element connection sections of the pair of connection terminals. The light transmissive member is disposed on an upper surface of the light emitting element.

公开(公告)号：US10468571B2

公开(公告)日：2019-11-05

申请号：US16260243

申请日：2019-01-29

Applicant: NICHIA CORPORATION

Inventor： Takuya Nakabayashi

IPC: H01L33/62 ,  H05K1/11 ,  B60Q1/14 ,  B60Q1/16 ,  H01L33/08 ,  H01L33/54 ,  H01L33/38 ,  H05K1/02 ,  F21Y105/12 ,  F21Y105/10 ,  H01L25/075 ,  H01L33/10 ,  F21S41/143 ,  F21S41/14 ,  F21S41/663

Abstract: A light distribution method is for an adaptive driving beam headlamp system including a light emitting device, an on-board camera and an electronic control unit. The light distribution method includes: obtaining data indicative of a state in front of a vehicle by the on-board camera; computing one or more of: attributes of an object in front of the vehicle; attributes of a vehicle ahead; a speed of the vehicle ahead; a distance between vehicles; brightness of the object; and a road shape; determining a light distribution pattern; determining a control amount indicative of at least one of an ON or OFF state of each of the light emitting elements and an applied power to each of the light emitting elements according to the light distribution pattern determined; and controlling driving of the adaptive driving beam headlamp system based on the control amount determined.