Wavefront correction system

Details Wavefront correction system Wavefront correction system

2006-12-26

2006-12-26

Thompson, Timothy (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S238000

Reexamination Certificate

active

07154658

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: 5068835 (1991-11-01), Reed
patent: 2005/0147141 (2005-07-01), Sox et al.
patent: 2005/0207509 (2005-09-01), Saunders et al.

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