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Beam steering device

  • US 7,417,706 B2
  • Filed: 05/22/2006
  • Issued: 08/26/2008
  • Est. Priority Date: 03/28/2001
  • Status: Expired due to Fees
First Claim
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1. An optical device comprising an array of elements, a beam of light being incident upon said array of elements, each element having a reflective back electrode and a single transparent front electrode common to the array, the back and front electrodes being disposed respectively behind and in front of a liquid crystal layer, the back electrodes being spaced apart to define said array, a waveplate disposed to provide polarisation independence and a reflective layer disposed behind the back electrodes to reflect light incident in the spaces between the back electrodes substantially in phase with the light reflected from the back electrodes, said array of elements to steer said beam of light.

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