The Perkin-elmer Corporation

Richard Constantine Babish

David S Dunavan

An improved optical direction of arrival sensor in which incoming radiation passes through a cylindrical lens placed through a top mask and is focused in the gap between the lens and a detector array concentric about the back of the lens. The focal line then expands and falls on the detector array which embodies an encoding scheme. The output from the encoded detector is then processed to determine the angle of incidence of the incoming radiation with the top mask.

Optical direction of arrival sensor with cylindrical lens

In an optical system having a mirror system for reflecting light from a field of interest to form a desired image on sensitive material disposed in a focal plane, the improvement characterized by the provision of a centrally located obscuration disposed adjacent the front of a mirror for intercepting light reflected from the sensitive material toward the mirror to prevent reflection from the mirror of said light reflected from the sensitive material from reilluminating the sensitive material, to thereby improve the contrast the desired image.

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Wilton, CT, United States of America

Richard Constantine Babish