LED work light
US8033681B2 · kind B2 · utility
24Cited by
23References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2009 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Jul 31, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light comprising an LED whose light intensity decreases as the angle from an axis of the LED increases, and a convex lens associated with the LED such that a beam width of the LED is concentrated by the lens into a narrower beam width, wherein the convex lens includes both a convex surface and a concave surface, and the concave surface is curved more sharply towards its edge than towards its center such that light is more evenly spread across the beam width of the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.