IP Library › Granted Patent US 10,584,853
Granted Patent B2
US 10,584,853 · App. 16/222,646 · Granted Mar 10, 2020

Light-emitting device

Inventors: Masao Kamiya (Kiyosu, JP); Masaaki Osawa (Kiyosu, JP); Satoshi Wada (Kiyosu, JP); Yuhki Kawamura (Kiyosu, JP); Kento Hayashi (Kiyosu, JP)
Assignee: TOYODA GOSEI CO., LTD.
F21V9/30F21K9/64F21V7/22F21Y2115/30
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Quick Facts
Patent No.
US 10,584,853
App. No.
16/222,646
Granted
Mar 10, 2020
Kind
B2
Abstract

A light-emitting device includes a plurality of semiconductor laser elements including a first semiconductor laser element, and a plurality of reflectors including a first reflector for reflecting light emitted from the first semiconductor laser element, each of reflectors reflecting light emitted from corresponding one of the plurality of semiconductor laser elements. Light emitted from the first semiconductor laser element passes through a gap between two of the plurality of reflectors excluding the first reflector and reaches the first reflector. Lights emitted from the plurality of semiconductor laser elements are extracted in a direction different than an incident direction thereof toward the plurality of reflectors.

Claims (14)

1. A light-emitting device, comprising

a plurality of semiconductor laser elements including a first semiconductor laser element;

a plurality of reflectors including a first reflector for reflecting light emitted from the first semiconductor laser element, each of reflectors reflecting light emitted from corresponding one of the plurality of semiconductor laser elements; and

a plurality of scattering materials that are each arranged in a region between one of the plurality of semiconductor laser elements and corresponding one of the plurality of reflectors,

wherein light emitted from the first semiconductor laser element passes through a gap between two of the plurality of reflectors excluding the first reflector and reaches the first reflector,

wherein lights emitted from the plurality of semiconductor laser elements are extracted in a direction different than an incident direction thereof toward the plurality of reflectors,

wherein each of the plurality of scattering materials comprises a wavelength-converting member,

wherein an arbitrary one of the plurality of semiconductor laser elements is defined as a predetermined semiconductor laser element, one of the plurality of reflectors that reflects light emitted from the predetermined semiconductor laser element is defined as a predetermined reflector, and one of the plurality of scattering materials that is arranged between the predetermined semiconductor laser element and the predetermined reflector is defined as a predetermined scattering material, and

wherein a wavelength-selective reflector that transmits light emitted from the predetermined semiconductor laser element and reflects light wavelength-converted by the predetermined scattering material is arranged between the predetermined semiconductor laser element and the predetermined scattering material, and between the predetermined reflector and the predetermined scattering material.

2. The light-emitting device according to claim 1 , wherein the plurality of scattering materials are integrated into a single scattering material.

3. The light-emitting device according to claim 1 , wherein incident directions of lights emitted from the plurality of semiconductor laser elements toward the plurality of reflectors are parallel to each other.

4. The light-emitting device according to claim 1 ,

wherein light emitted from the predetermined semiconductor laser element passes through a gap between two of the plurality of reflectors excluding the predetermined reflector and reaches the predetermined reflector.

5. The light-emitting device according to claim 1 , wherein not less than two of the plurality of reflectors are integrated into a single reflector.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 18, 2018
From: KAMIYA, MASAO; OSAWA, MASAAKI; WADA, SATOSHI; KAWAMURA, YUHKI; HAYASHI, KENTO
To: TOYODA GOSEI CO., LTD.
Reel/Frame 047807/0013 →
Priority Claims (1)
JP 2018-046994 · Mar 14, 2018 · national
Continuity (1)
Related Publication 20190285248A1 · Sep 19, 2019