The optical device which possesses the angular scan range which it increases

摘要

(57) Abstract This invention the optical device which has with the expedient which it makes deflect makes scan the emitter which generates the emission beam (3) and this emission beam over the angular range is something regarding (1). The optical path of the scan emission beam the optical boundary (9,11) 2 includes 1 groups at least. The boundary (9,11) these 2 as angle is formed mutually, refractive index around encircles the material which possesses the refractive index n which differs.