Optical wavefront sensing system
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United States of America Patent
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Feb 16, 1988
Grant Date -
N/A
app pub date -
May 22, 1985
filing date -
May 22, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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