Wavefront correction system

Details Wavefront correction system Wavefront correction system

2006-11-07

2008-10-28

Choi, William C (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C359S629000

Reexamination Certificate

active

07443593

ABSTRACT:
A wavefront correction system using a dual frequency liquid crystal spatial light modulator to vary phase relationships of a wavefront is disclosed. A light beam from the dual frequency liquid crystal spatial light modulator can be split into a reference beam and a plurality of measurement beams to enhance a speed and/or accuracy of phase measurement. A temperature of the dual frequency liquid crystal spatial light modulator can be sensed to facilitate temperature control and/or temperature compensation, so as to enhance the accuracy associated with use of the crossover frequency used to control the dual frequency liquid crystal spatial light modulator.

REFERENCES:
patent: 4711576 (1987-12-01), Ban

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