Optical wavefront sensing system
US4725138A · kind A · utility
63Cited by
17References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1985 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | May 22, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wavefront sensor for detecting distortion in light wavefronts is described in which the wavefront is divided into a plurality of subapertures and light amplified or intensified and imaged as spots of light from each subaperture onto a filter mask. The filter mask encodes a predetermined function of the spot intensity distributor onto the light intensity of the spot transmitted through the filter. For spot centroid calculation, the function is linearly variable. Mask embodiments include linearly varying alternate opaque and transparent chevrons, electronically variable chevrons, and quadratically varying chevrons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.