公开(公告)号：US20210160979A1

公开(公告)日：2021-05-27

申请号：US17166450

申请日：2021-02-03

Applicant: NICHIA CORPORATION

Inventor： Kei HARAGUCHI ,  Kenji ASAI ,  Munetake FUKUNAGA ,  Yasuo FUJIKAWA

IPC: H05B45/20 ,  H05B45/10

Abstract: A lighting control system includes: a light fixture including a first light emitting device configured to emit light having a correlated color temperature in the range of ±500 K from a prescribed value, a second light emitting device configured to emit light having a correlated color temperature in the range of ±500 K from the prescribed value, and an emission controller configured to cause the light fixture to irradiate illumination light by controlling irradiation percentages of the light emitted from the first light emitting device and the light emitted from the second light emitting device; and an information processing apparatus communicably connected to the light fixture, the information processing apparatus comprising a dimming controller configured to change the irradiation percentages of the light emitted from the first light emitting device and the second light emitting device in accordance with a time of day by transmitting dimming instructions.

公开(公告)号：US20240113492A1

公开(公告)日：2024-04-04

申请号：US18473012

申请日：2023-09-22

Applicant: NICHIA CORPORATION

Inventor： Tadayuki KITAJIMA ,  Soichiro MIURA ,  Munetake FUKUNAGA ,  Yusuke MORI

IPC: H01S5/00

CPC classification number: H01S5/0087

Abstract: A light-emitting device includes a semiconductor laser element, a wavelength conversion member, and a package. The wavelength conversion member includes a wavelength conversion portion and a reflective portion. The wavelength conversion portion includes a light incident surface and a light-emitting surface. The package includes a disposition region. The wavelength conversion member is disposed at a position away in a first direction from a position at which the semiconductor laser element is disposed. The light-emitting surface has a shape that, in a plan view perpendicular to the light-emitting surface, has a first region decreasing in width in a second direction perpendicular to the first direction from the side closest to the semiconductor laser element toward the first direction.

公开(公告)号：US20230010312A1

公开(公告)日：2023-01-12

申请号：US17903193

申请日：2022-09-06

Applicant: NICHIA CORPORATION

Inventor： Kei HARAGUCHI ,  Kenji ASAI ,  Munetake FUKUNAGA ,  Yasuo FUJIKAWA

IPC: H05B45/20 ,  H05B45/10

Abstract: A lighting control system includes: a light fixture including: a first light emitting device configured to emit light having a first correlated color temperature of 3000 K or less in the CIE1931 color space chromaticity diagram, a second light emitting device configured to emit light having a second correlated color temperature equal to or higher than that of the first correlated color temperature, a third light emitting device configured to emit light having substantially effective emission wavelength in a 320 nm to 420 nm range, and an emission controller configured to cause the light fixture to irradiate illumination light by controlling irradiation percentages of the light emitted from the first, second, and third light emitting devices; and an information processing apparatus communicably connected to the light fixture and including a dimming controller configured to change the irradiation percentages.

公开(公告)号：US20210289711A1

公开(公告)日：2021-09-23

申请号：US17263608

申请日：2019-07-26

Applicant: NICHIA CORPORATION

Inventor： Mika MATSUMOTO ,  Kazushige FUJIO ,  Sadakazu WAKUI ,  Tomokazu SUZUKI ,  Masato FUJIWARA ,  Munetake FUKUNAGA

IPC: A01G7/04 ,  A01G9/20

Abstract: An output of light suitable for growing plants is controlled using a white light source.
A growing system including a greenhouse and a plurality of lighting devices disposed above a plant to be grown in the greenhouse and utilizing natural light includes a plurality of white light sources, a plurality of auxiliary light sources each of which is configured to emit red light and far-red light, and an illumination controller configured to control a degree of emission of light from the white light sources or the auxiliary light sources of the plurality of lighting devices, the illumination controller configured to start or stop controlling emission of light from the white light sources or the auxiliary light sources according to sunrise or sunset.

公开(公告)号：US20200329539A1

公开(公告)日：2020-10-15

申请号：US16840525

申请日：2020-04-06

Applicant: NICHIA CORPORATION

Inventor： Kei HARAGUCHI ,  Kenji ASAI ,  Munetake FUKUNAGA ,  Yasuo FUJIKAWA

IPC: H05B45/20 ,  H05B45/10

Abstract: A lighting control system includes: a light fixture including a first light emitting device configured to emit light having a correlated color temperature in the range of ±100 K from a prescribed value, a second light emitting device configured to emit light having a correlated color temperature in the range of ±100 K from the prescribed value, and an emission controller configured to cause the light fixture to irradiate illumination light by controlling irradiation percentages of the light emitted from the first light emitting device and the light emitted from the second light emitting device; and an information processing apparatus communicably connected to the light fixture, the information processing apparatus comprising a dimming controller configured to change the irradiation percentages of the light emitted from the first light emitting device and the second light emitting device in accordance with a time of day by transmitting dimming instructions.

公开(公告)号：US20230337342A1

公开(公告)日：2023-10-19

申请号：US18338550

申请日：2023-06-21

Applicant: NICHIA CORPORATION

Inventor： Kei HARAGUCHI ,  Kenji ASAI ,  Munetake FUKUNAGA ,  Yasuo FUJIKAWA

IPC: H05B45/20 ,  H05B45/10

CPC classification number: H05B45/20 ,  H05B45/10

Abstract: A lighting fixture includes: one or more first light emitting devices configured to emit first light and second light for circadian rhythms; and a second light emitting device configured to emit third light having substantially effective emission wavelength in the 320 nm to 420 nm range. A correlated color temperature of the second light is higher than a correlated color temperature of the first light. A meranopic ratio of the second light is higher than a meranopic ratio of the first light.

公开(公告)号：US20230163562A1

公开(公告)日：2023-05-25

申请号：US18057216

申请日：2022-11-20

Applicant: NICHIA CORPORATION

Inventor： Nobuyuki TANAKA ,  Munetake FUKUNAGA

IPC: H01S5/026 ,  H01S5/023 ,  H01S5/02345

CPC classification number: H01S5/0264 ,  H01S5/023 ,  H01S5/02345

Abstract: A photodetector is positioned so that imaginary lines perpendicular to an emission end surface of a first light-emitting element through first and second points, respectively, pass through the photodetector. The first and second points are two points at which an imaginary line parallel to the emission end surface through an inside of an outer edge of the first light-emitting element intersects the outer edge of the first light-emitting element in a top view. At least a part of a first wiring region is arranged in a first region between imaginary lines perpendicular to the emission end surface through third and fourth points, respectively. The third and fourth points are two points at which an imaginary line parallel to the emission end surface through an inside of an outer edge of the photodetector intersects the outer edge of the photodetector in the top view.