Invention Grant
- Patent Title: Light-emitting device
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Application No.: US17122704Application Date: 2020-12-15
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Publication No.: US11476637B2Publication Date: 2022-10-18
- Inventor: Tatsuya Kanazawa , Kazuma Kozuru
- Applicant: NICHIA CORPORATION
- Applicant Address: JP Anan
- Assignee: NICHIA CORPORATION
- Current Assignee: NICHIA CORPORATION
- Current Assignee Address: JP Anan
- Agency: Foley & Lardner LLP
- Priority: JPJP2019-226575 20191216,JPJP2020-171614 20201012
- Main IPC: H01S5/00
- IPC: H01S5/00 ; H01S5/02234 ; H01S5/02253 ; H01S5/02257 ; H01S5/0236 ; H01S5/40 ; H01S5/02255

Abstract:
A light-emitting device includes: a semiconductor laser element; a package; an optical member fixed to the package; and a first adhesive and a second adhesive fixing the optical member to the package, the second adhesive having a better resistance to light than the first adhesive. The package has an emission surface through which light from the semiconductor laser element exits the package. In the optical member, one or more first bonding regions to which the first adhesive is bonded and one or more second bonding regions to which the second adhesive is bonded are located at positions that are closer to an incidence surface of the optical member than to an emission surface of the optical member. In the optical member, the one or more first bonding regions and the one or more second bonding regions have a light transmittance of 80% or more.
Public/Granted literature
- US20210184423A1 LIGHT-EMITTING DEVICE Public/Granted day:2021-06-17
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