Patent ID: 9535014
Date: 2017-01-03
CPC Classifications: G01N,G02B,G03F

Claim:
1. A system for inspecting an object, the system comprising: an illumination module that comprises (a) a first traveling lens acousto-optic device that is configured to generate a first traveling lens that propagates through an active region of the first traveling lens acousto-optic device; (b) a light source that is configured to illuminate the first traveling lens to provide an input beam that propagates along a first direction; (c) illumination optics that are configured to receive the input beam and to output, in response to the input beam, an output beam that scans the object along a second direction; a detection unit; and a collection module that is configured to (a) collect a collected beam from the object, wherein the collected beam propagates along a third direction; and (b) optically manipulate the collected beam to provide a counter-scan beam that is directed towards the detection unit and has a focal point that is positioned at a same location regardless of the propagation of the collected beam along the third direction.