Photoelectric direction finder
US4286760A · kind A · utility
22Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1979 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Mar 12, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/786
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A direction finder including downstream the reticle an intermediate objective and a four quadrant detector, the reticle providing a modulation at a given frequency and in which the intermediate objective comprises preferably a half-ball lens whose center of curvature coincides substantially with the detector center to allow a relative movement of the reticle with respect to the detector, such as a rotation round this center controlled by a driving device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.