Optics for chip-on-board road and area lighting
US11181250B2 · kind B2 · utility
0Cited by
21References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 2, 2019 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Dec 25, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp includes an extended planar light source, and an optical element arranged with the light source, wherein the optical element comprises an outer surface having an indented cusp substantially over the light source. A lamp includes an extended planar light source, and an optical element arranged with the light source, wherein the optical element comprises an outer surface having a portion at a peripheral edge comprising a curvature configured to redirect light emitted from the light source by total internal reflection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.