Shaped phosphor to reduce repeated reflections
US10109774B2 · kind B2 · utility
1Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2014 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Aug 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/854
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
Pre-formed wavelength conversion elements are attached to light emitting elements and are shaped to reduce repeated occurrences of total internal reflection. The sides of the shaped elements may be sloped or otherwise shaped so as to introduce a change in the angle of incidence of reflected light upon the light extraction surface of the wavelength conversion element. The pre-formed wavelength conversion elements may be configured to extend over an array of light emitting elements, with features between the light emitting elements that are shaped to reduce repeated occurrences of total internal reflection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.