Reduced-footprint illumination system using highly-efficient optical collection and reflection surface(s) and method for manufacturing optical elements used therein
US7764435B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Feb 15, 2007 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Sep 13, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved optical collection and transmission surface includes a plastic mold injection surface including staggered multiple transmission sites each with a recessed portion in which incident light is not lost during reflection towards the propagation surface. A device implementing the surfaces is plastic-mold injected of high quality acrylic at in a preferred embodiment and can be economically optionally polished or finished to achieve desired quality surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.