Light collector having optically coated acrylic substrate
US5541421A · kind A · utility
7Cited by
25References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1994 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Nov 21, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/0281
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for collecting and detecting radiation emitted by, reflected from, or transmitted through a scanned information medium. The apparatus includes a photodetector assembly and first and second planar mirror assemblies configured to maximize collection efficiency and flare radiation attenuation. The first and second planar mirror assemblies include specularly reflective mirrors including an acrylic substrate having a reflective aluminum coating vacuum deposited on the acrylic substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.