公开(公告)号：US20200018460A1

公开(公告)日：2020-01-16

申请号：US16453926

申请日：2019-06-26

Applicant: NICHIA CORPORATION

Inventor： Wataru KITAHARA ,  Yoshinori MOMOSE ,  Wataru OGURA

IPC: F21V7/00 ,  F21V8/00 ,  G02B3/08 ,  F21V7/04

Abstract: An optical device comprises: at least one first reflecting surface disposed so as to reflect first light that has a light distribution having an optical axis parallel to a first axis, to an arc-shaped first region surrounding the first axis; and a second reflecting surface and a third reflecting surface that are disposed such that the second reflecting surface and the third reflecting surface meet each other on the first axis, and such that the first reflecting surface is disposed between the second reflecting surface and the third reflecting surface.

公开(公告)号：US20180106943A1

公开(公告)日：2018-04-19

申请号：US15783945

申请日：2017-10-13

Applicant: NICHIA CORPORATION

Inventor： Katsuyuki ONOZUKA ,  Wataru OGURA ,  Yoshitaka TANAKA

IPC: F21V8/00 ,  G02B6/02 ,  G02B6/42 ,  F21K9/61

CPC classification number: G02B6/0006 ,  F21K9/61 ,  F21V2200/10 ,  F21Y2101/00 ,  G02B6/001 ,  G02B6/02319 ,  G02B6/02342 ,  G02B6/4249 ,  G02B6/4298

Abstract: An illumination device includes: an optical fiber, the optical fiber allowing light emitted from a light source to be introduced at a first end portion thereof and to be guided through the optical fiber while emitting a portion of the light through a side surface of the optical fiber; a light-transmissive tube, the light-transmissive tube covering the side surface of the optical fiber such that a gap is located between the tube and the side surface of the optical fiber; and a light-shielding cap covering a second end portion of the tube at a side opposite the light source such that a space is located between a bottom portion of the cap and the second end portion of the tube. A second end portion of the optical fiber projects past the second end portion of the tube and is located at an inner side of the cap.

公开(公告)号：US20130200802A1

公开(公告)日：2013-08-08

申请号：US13756585

申请日：2013-02-01

Applicant: NICHIA CORPORATION

Inventor： Harumi SAKURAGI ,  Wataru OGURA ,  Teruo WATANABE ,  Minoru KITAHARA

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H05B33/083

Abstract: An apparatus includes first and fourth bypasses, a current detector, and a current controller. The first bypass is connected serially to a first LED, and controls the current amount in the first LED. The fourth bypass is connected serially to a second LED, and controls the current amount in the first and second LEDs. The detector detects current detection signal based on the current amount on an output line along which the first and second LEDs are connected serially to each other. The controller provides control signal for controlling the first and fourth bypasses based on the detection signal. The controller includes one output for providing the control signal. The first and fourth bypasses are connected in parallel to the one output.

Abstract translation: 一种装置包括第一和第四旁路，电流检测器和电流控制器。 第一个旁路串联连接到第一个LED，并控制第一个LED中的电流量。 第四旁路串联连接到第二LED，并且控制第一和第二LED中的电流量。 检测器基于在第一和第二LED串联连接的输出线上的电流量来检测电流检测信号。 控制器基于检测信号提供用于控制第一和第四旁路的控制信号。 控制器包括一个用于提供控制信号的输出。 第一和第四旁路与一个输出并联连接。