Device for detecting optical position
US6437859B1 · kind B1 · utility
36Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Aug 1, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C15/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting optical position, comprising a photodetection unit 40 having a photodetection optical axis 37 and for outputting a photodetection signal corresponding to a light receiving position of a projected light beam, and a modulation grid 42 arranged on said photodetection optical axis and for equalizing distribution of light quantity of a received light beam, wherein a position of the light beam projected on the photodetection unit is detected based on said photodetection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.