Patent ID: 6034817
Filing Date: 2000-03-07
Classification: G03B

Abstract:
An apparatus for effecting the display of image rear-projection beams incident thereupon, comprising a plurality of similar focusing lens units formed in an optical material, said lens units possessing separate and distinct optical refracting power in a first principle axis and a second principle axis, said first principle axis being perpendicular to said second principle axis, said first principle axis and said second principle axis both being perpendicular to an optical axis, said lens units disposed in substantially contiguous relation and repeating along said first principle axis and said second principle axis, each lens unit including an optically transmitting refractive surface, said optically transmitting refractive surface constructed by displacing in said optical axis with respect to said first principle axis a singularly distinct and constant aspheric contour residing in a plane defined by said optical axis and said second principle axis.