Reflector having inflection point and LED fixture including such reflector
US7993034B2 · kind B2 · utility
75Cited by
65References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 2008 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Nov 23, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A recessed light fixture includes an LED light source and a reflector extending 360 degrees around a center line of light output from the light source. A cross-sectional geometry of the reflector includes a bell-shaped curve with two radii of curvature that join together at an inflection point. One of the radii defines a top portion of the curve, which is disposed above the inflection point and reflects light in a concentrated manner to achieve desired light at higher angles. The other radii defines a bottom portion of the curve, which is disposed below the inflection point and is more diverging than the top portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.