Wide field of view, four-telescope, radial scanning search...

Details Wide field of view, four-telescope, radial scanning search... Wide field of view, four-telescope, radial scanning search...

2006-05-16

2006-05-16

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S332000, C348S168000

Reexamination Certificate

active

07045774

ABSTRACT:
A wide field of view imaging system (100). The novel system (100) includes a rotating mirror (18) having two reflective surfaces each surface, respectively, reflecting light from a scene to first and second sensors (10, 12) positioned to receive light from the mirror (18), wherein the first and second sensors (10, 12) each occupy a different portion of the volume surrounding the mirror (18). In the illustrative embodiment, the mirror (18) is a flat, double-sided mirror rotating at a constant velocity about an axis parallel with the surface of the mirror (18). The first and second sensors (10, 12) are all-reflective optical systems, with the first sensor (10) opposite the second sensor (12). In the preferred embodiment, the invention further includes third and fourth opposing sensors (14, 16) clocked 90° from the first and second sensors (10, 12). The first and second sensors (10, 12) cover an outer annulus of the field of view while the mirror (18) rotates a first 90°, and the third and fourth sensors (14, 16) cover an inner annulus while the mirror (18) rotates the next 90°.

REFERENCES:
patent: 2858453 (1958-10-01), Harris
patent: 3781559 (1973-12-01), Cooper et al.
patent: 3804976 (1974-04-01), Gard
patent: 5264930 (1993-11-01), Florence et al.

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