Light emitting device
US10965097B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2020 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Feb 19, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light emitting device includes: a base including: a main body, and a frame disposed on an upper surface of the main body; one or more laser elements disposed on the upper surface of the main body and positioned inward of the frame; a cover including: a support member that is fixed on an upper surface of the frame and has an opening inside the frame, and a light transmissive portion disposed so as to close the opening; and a lens body disposed on the support member and above the light transmissive portion. A difference between a thermal expansion coefficient of the light transmissive portion and a thermal expansion coefficient of the lens body is smaller than a difference between a thermal expansion coefficient of the light transmissive portion and a thermal expansion coefficient of the main body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.