Light emitting element and light emitting element array
US11594859B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2018 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Oct 22, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34333
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light emitting element includes: a laminated structure 20 obtained by laminating a first compound semiconductor layer 21, an active layer 23, and a second compound semiconductor layer 22; a first light reflecting layer 41 disposed on a first surface side of the first compound semiconductor layer 21; a second light reflecting layer 42 disposed on a second surface side of the second compound semiconductor layer 22; and light convergence/divergence changing means 50. The first light reflecting layer 41 is formed on a concave mirror portion 43. The second light reflecting layer 42 has a flat shape. When light generated in the active layer 23 is emitted to the outside, a light convergence/divergence state before the light is incident on the light convergence/divergence changing means 50 is different from a light convergence/divergence state after the light passes through the light convergence/divergence changing means 50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.