Optical system with reduced back reflection
US7149383B2 · kind B2 · utility
9Cited by
239References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2004 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Feb 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system is adapted to produce reduced back reflection from a receiving detector back to a light source for increased system performance. The system may optically condition light signals from the light source for projection onto the detector. The conditioning may result in a light spot on the detector that has an annular intensity distribution or profile. The annular distribution may be attained in any number of ways including providing a slope discontinuity in the lens surface, providing an ax icon lens function, and/or providing a defocused light spot on the detector surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.