Ultra wide field of view scanning surveillance optical system

Details Ultra wide field of view scanning surveillance optical system Ultra wide field of view scanning surveillance optical system

1992-12-18

1994-09-13

Ben, Loha

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359205, 359354, 359357, 359663, 359725, 359749, G02B 2608, G02B 1306

Patent

active

053473914

ABSTRACT:
A refractive inverse telephoto optical system (10) has a first lens doublet (12), a Pechan prism assembly (14) and a second lens doublet (16). The Pechan prism assembly (14) is spaced between the front negative doublet (12) and the rear positive doublet (16). The Pechan prism assembly (14) may be rotated and, as rotation occurs, the associated linear detector array is rotated around within the optical field of view.

REFERENCES:
patent: 3404934 (1968-10-01), Brachvogel et al.
patent: 3619027 (1971-11-01), Baker et al.
patent: 3762793 (1973-10-01), Ullstig
patent: 4081207 (1978-03-01), Dippel
patent: 4279507 (1981-07-01), Bulpitt
patent: 4621888 (1986-11-01), Crossland et al.
patent: 4768184 (1988-08-01), Reno

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