Light deflector
US5604620A · kind A · utility
3Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light deflector for p-polarized light of wavelength .lambda. includes a light deflector member of a material principally composed of an aluminum allow with an aluminum oxide file, formed on the deflecting reflection face(s) of the light deflector member. Optical film thickness (nd) of the aluminum oxide film is within a range of: PA1 .lambda./11.1 to .lambda./5.0; PA1 .lambda./4.11 to .lambda./2.89; PA1 .lambda./1.73 to .lambda./1.47; or PA1 .lambda./1.28 to .lambda./1.20 wherein reflectance of the incident light is substantially constant when the angle of incidence on the reflection face(s) is between 10.degree. and 55.degree..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.