Beam position sensor for optical switch modules
US8022379B2 · kind B2 · utility
8Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2007 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | Jul 19, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0049
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A beam direction sensor for determining the direction of each beam in an array of light beams. The invention basically consists of a screen positioned to intersect the array of beams and a video camera to record the position of the images of the intersections. The screen can be any of a wide variety of screens that produce an image of the beams when illuminated with the beam. These include frosted glass and various diffusers. A preferred screen is a holographic diffusers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.