Patent ID: 8228579

Claim:
An optical device for projecting a light beam comprising: a first planar reflector disposed in a path of a focused light beam for deflecting said light beam incident thereon, said planar reflector being movable about a first axis; a concave reflective surface fixed in position and disposed in a path of said deflected light beam, said concave reflective surface is characterized by having a circular shape extending along at least one of its axis and wherein said reflective surface being spaced apart from said planar reflector by a distance being approximately equal to the radius of said circular shape; and a second planar reflector moveable about a second axis located in a plane substantially vertical to a plane comprising said first axis and wherein said second planar reflector is positioned in a path of the light reflected by said concave reflective surface such that said light beam is projected onto a target plane with a substantially flat field of focus.