Research/Patents/US 5113282
US 5113282

DUAL LIGHT VALVE SYSTEM WITH SELECTIVE DECOUPLING OF LIGHT VALVES

Assignee

HUGHES AIRCRAFT COMPANY, LOS ANGELES, CALIFORNIA, A DE CORP.

Filed

Jul 10, 1987

Granted

May 12, 1992

Location

MALIBU CA US

Abstract

Apparatus for selectively limiting the response of an auxiliary liquid crystal light valve which is used in a dual liquid crystal light valve laser optics system for correcting inherent liquid crystal light valve distortion by isolating an atmospheric reference beam from the main laser beam in the auxiliary correction system. Two types of isolation are provided: dual bandwith and dual polarization. In the former, the response bandwidth of the auxiliary liquid crystal light valve is shifted to prevent overlap with the bandwidth of an atmospheric reference wavefront. In the dual polarization form of isolation, provision is made for rotating the polarization of only one of the two interacting beams.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Feb 2, 1988

Rescinded

Mar 22, 1991

Duration

3 years, 1 month

Inventor

  • 1THOMAS R. O'MEARA

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records