Arbitrary surface optical element and method of making the same
US7324734B2 · kind B2 · utility
0Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2006 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Sep 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/008
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An arbitrary surface optical element, such as a mirror for use in a rear projection television, includes a non-optical portion and an optical portion. The non-optical portion circumscribes the optical portion and has a thickness greater than the optical portion. Accordingly, the two portions cool at approximately the same rate, thereby minimizing warpage from differential cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.