Patent ID: 6587252
Filing Date: 2003-07-01
Classification: G02F

Abstract:
An optical system for modulating a light beam, comprising:means for producing first and second beams of light intersecting at an intersection plane at first and second angles of incidence, respectively, relative to a normal of the intersection plane, at least one of said first and second beams being modulated; means for producing a third beam of light intersecting the intersection plane at a third incidence angle relative to the normal of the intersection plane; a layer of material disposed at the intersection plane for substantially transmitting the third beam when intersecting the layer at the third incidence angle and for interacting with said first and second beams when intersecting said layer at the first and second incidence angles to produce a standing wave proximate said layer that interacts with said third beam and modulates said third beam based on the modulation of said at least one of said first and second beams.