High-power white LEDs
US10305001B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2015 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Jul 7, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
Abstract
A light emitting apparatus includes a first radiation source without a dome, a substantially transparent and light transmissive optic device, a lens, a down conversion material, and a heat sink. The optic device is devoid of scattering particles and phosphor, and includes a planar top surface distal the first radiation source, a bottom surface proximal the first radiation sources, and a transparent sidewall extending between the top surface and the bottom surface. The down conversion material includes a flat layer including phosphor that is disposed on the planar top surface of the optic device between the lens and the radiation source. The heat sink, upon which the radiation source is mounted, has a recess formed therein in which an air space is defined between a boundary of the recess and the optic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.