Patent ID: 6636369
Filing Date: 2003-10-21
Classification: G02B,H01S

Abstract:
An optical wedge for shifting and maintaining a position of a focal point of an incident beam of light onto an aperture, said shift being proportional to a thickness of said optical wedge, said optical wedge comprising:a first planar side in the optical pathway of a beam of light, said first side positioned at a first angle relative to said beam of light; a reflective filter coating deposed on an outside surface of said first planar side between said beam of light and said optical wedge for attenuating said beam of light and for reflecting light having wavelengths other than said beam of light; a second planar side angularly positioned relative to said first planar side such that a second angle formed by said first side and said second side is less than 90 degrees thereof; an opaque coating deposed on an outside surface of said second side for blocking said beam of light; and an aperture formed into said opaque coating, said aperture operative to separate a single pulse of light from a plurality of light pulses.