Optical communication system for survey instrument
US6587244B1 · kind B1 · utility
48Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1999 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Sep 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/481
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides an optical communication system, which comprises photodetection means for receiving communication light and optical means for forming an image from the communication light on the photodetection means, wherein the optical means is provided with a diffraction optical member having at least 0-th diffraction order.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.