Patent ID: 6204955
Filing Date: 2001-03-20
Classification: G02B

Abstract:
A light direction control device adapted for dynamically controlling the direction of an initial light beam emitted from a light source, said device having an optical axis and comprising:(a) in physical order, an initial dynamic beam deflector and a light beam direction mapper;(b) said initial dynamic beam deflector receiving said initial light beam and emitting said initial light beam as an initially deflected light beam at an initial deflection angle; and(c) said light beam direction mapper being based on geometry optics and having an output space with a far field, said light beam direction mapper receiving said initially deflected light beam at an input surface and transmitting an output light beam to said far field, said output light beam having an output deflection angle larger than said initial deflection angle;(d) said light beam direction mapper including a beam size reducer, a beam transmission adapter, and a projector;(e) said beam size reducer receiving said initially deflected light beam and providing a focused light beam to a light energy spot on said beam transmission adapter;(f) said beam transmission adapter receiving said light energy spot and propagating said light energy spot to an emitting surface;(g) said projector receiving said propagated light energy spot and emitting said output light beam such that a central ray of said output light beam does not cross said optical axis.