Light-emitting element, light source device and projector
US11429015B2 · kind B2 · utility
0Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2019 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Jan 17, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2066
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An object is to provide a light-emitting element capable of further suppressing the spread of a light-emitting region and further improving directivity. A light-emitting element is provided which includes at least a phosphor layer and an emission angle selection layer which emits light incident at a predetermined angle, in which the phosphor layer includes a phosphor and a light scatterer, and the phosphor layer and the light emission angle selection layer are arranged in this order.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.