Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1989-02-09
1991-09-10
Wallace, Linda J.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
2502019, 250229, 359 63, 359 77, 359 78, 359 36, G02F 113, G01J 120
Patent
active
050468243
ABSTRACT:
An adaptive optics system and method for providing wavefront aberration compensation with both phase reversal and amplitude preservation. Two operational modes, namely, a transmission mode and a compensated imaging mode, are available. Two spatial light modulators, preferably liquid crystal light valves (LCLVs) are operatively connected in tandem. Each LCLV has an associated feedback loop. One LCLV acts upon the phase aberrations in an input aberrated beam and the other LCLV acts upon the amplitude information in the aberrated beam. Alternative embodiments are also disclosed.
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Denson-Low W.
Duraiswamy V. D.
Hughes Aircraft Company
Wallace Linda J.
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