Title: Optical scanning systems

Abstract: An optical scanning system has a dirigible head of generally spherical shape mounted on a support body for scanning through a substantially hemispherical field of view, and optical lenses, a scanner rotor and drive motor therefor, and a cryogenically-cooled detector element array are all mounted within the confines of the dirigible head. The head has a primary objective lens in its outer shell and further lenses are mounted within the head in an adjustable holder enabling different lenses to be brought into alignment with the objective lens. The scanner rotor is generally annular and rotates about an axis oblique to the optical axis of the objective lens; it comprises a multi-faceted reflector receiving the image beam from the lens system and reflecting it laterally on to the detector array.

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Inventors: Collier, David Thomas (Dunstable, EN)

Application Number: 495209
Filing Date: 1974-08-06
Publication_date: 1976-01-27
Assignee: Hawker Siddeley Dynamics Limited (EN)
Primary Class(es): 250/236 250/238, 359/216
Other Classes:
US Patent Ref:

2901942	Sep, 1959	Tackaberry	350/77.
3614194	Oct, 1971	Harris	350/7.
3742238	Jun, 1973	Hoffman	350/6.
3829192	Aug, 1974	Wheeler	350/7.

Other Refs:
Primary Examiner: Stolwein, Walter
Assistant Examiner:
Attorney: Rose & Edell