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Color filters and sequencers using color-selective light modulators

  • US 20050122454A1
  • Filed: 10/22/2004
  • Published: 06/09/2005
  • Est. Priority Date: 05/23/1995
  • Status: Active Grant
First Claim
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1. A light modulator having a stack-only mode and a stack-altered mode, comprising:

  • a first retarder stack for receiving at least partially polarized input light;

    an electro-optic modulator for receiving light from the first retarder stack;

    a second retarder stack positioned to receive light output from the electro-optic modulator; and

    an output polarizer for receiving and analyzing light from the second retarder stack;

    wherein the first retarder stack, the electro-optic modulator, the second retarder stack and the output polarizer are adapted and oriented so that, in the stack-only mode, light transmitted by the output polarizer corresponds to a neutral state.

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