Patent ID: 6082863
Filing Date: 2000-07-04
Classification: G02B,H04N

Abstract:
A prism block for color dispersion and recombination, the prism block comprising:a lens to receive a light beam, the lens being Joined to a portion of the prism block, a normal to the lens defining an optic axis;a first surface of the prism block, intersecting the optic axis, oriented at a first angle to the optic axis, said first angle greater than 45.degree. to disperse the light beam into a first component and an intermediate component;first, second and third working faces located along different segments of a periphery of the prism block;a second surface of the prism block, intersecting the optic axis, oriented at a second angle to the optic axis, to disperse the intermediate component of the light beam into a second component and a third component; andsuch that at least one of the first, second or third components passes directly to the first, second or third working faces, respectively, from one of the first or second surfaces,wherein the first and second surfaces and the first, second and third working faces comprise a unitary body.