Broad band controlled angle analog diffuser and associated methods
US6392808B1 · kind B1 · utility
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26References
15Claims
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Key dates
| Filing date | Feb 1, 1999 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Feb 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/303
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An analog controlled angle diffuser and associated methods provide a wavelength insensitive diffuser with a controlled output. The diffuser has free formed shaped analog fringes, i.e., fringes which have a continuous cross-section from their peak to their termination. Preferably, the depth of the analog fringes will be at least 2&pgr;, even more preferably at least 2O&pgr;. Advantageously, the pattern of the diffuser is computer-generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.