Patent ID: 6134009
Filing Date: 2000-10-17
Classification: G01J,G02B

Abstract:
A system for viewing of a section of a medium which receives and returns light both from the section and from sites adjacent to the section that reduces the quality of an image formed from said returned light from said section, said system comprising a polarization separator and a polarization retarder, which are disposed successively in the path of light received by the medium, the light received by the medium passing from said separator through said retarder and then to said medium, for processing the light said medium receives into a pair light beams, the light in each of which beams is polarized generally orthogonally and is incident on said section at spots spaced laterally from each other while said beams are overlapping in said medium at said sites, and a detector responsive to return light from both said beams thereby providing for interference of light returned from said sites and enabling construction of said image in response to a parameter of said return light.