Time-shared aperture device
US4384198A · kind A · utility
21Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1982 |
| Grant date | May 17, 1983 |
| Priority date | — |
| Expiry date | Feb 9, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A time-shared aperture device using the laser illuminated target to provide a return wavefront which passes through the optical train and beam expander. The distortions in this return wavefront are sampled by a rotating beam chopper which completely blocks the outgoing beam, thereby preventing scattered laser light in the optical train and beam expander from drowning out the fainter target return. Wavefront analyzers provide an indication of errors present in the optical system so that correction may be applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.