Patent ID: 6775051
Filing Date: 2004-08-10
Classification: G01N,G02B,G02F,G03F

Abstract:
A system configured to scan a beam of light over a surface of a specimen, comprising:an acousto-optical deflector configured to focus the beam of light along a scan line; and an optical relay system, wherein an optical axis of the relay system is not parallel to a chief ray produced by the acousto-optical deflector at the scan line, and wherein the optical axis of the relay system is substantially perpendicular to a focal plane proximate the surface of the specimen, comprising: a relay lens configured to collimate the beam of light from the scan line, wherein an optical axis of the relay lens is substantially centered on the scan line; and an objective lens configured to focus the collimated light to the focal plane, wherein an optical axis of the objective lens is substantially de-centered with respect to the optical axis of the relay lens, and wherein the focal plane is substantially parallel to the surface of the specimen.