High-power white LEDs and manufacturing method thereof
US8164825B2 · kind B2 · utility
14Cited by
82References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2011 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Jan 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
Abstract
A light emitting apparatus has a radiation source for emitting short wavelength radiation. A down conversion material receives and down converts at least some of the short wavelength radiation emitted by the radiation source and back transfers a portion of the received and down converted radiation. An optic device adjacent the down conversion material at least partially surrounds the radiation source. The optic device is configured to extract at least some of the back transferred radiation. A sealant substantially seals a space between the radiation source and the optic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.