Device for enhancing field of view and reducing image smear in a

Details Device for enhancing field of view and reducing image smear in a Device for enhancing field of view and reducing image smear in a

1994-01-31

1995-02-14

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250342, 250334, 244 316, H04N 306, G01J 508

Patent

active

053897919

ABSTRACT:
A conventional rate-stabilized IR seeker is fitted with an improvement that esults in a wider FOV as well as much-reduced image smear. The improvement comprises a circular optical wedge rotatably mounted in front of the optics assembly of the seeker sensor. The combination of the primary scan vector generated by the circulating sensor of the seeker and the secondary scan vector generated by the rotating wedge produces a scan pattern that has a wider total FOV than that of the sensor alone while at the same time providing occasional points of zero or near-zero spatial scan velocity. Such points allow collection of "snapshot" data with little or no image smear.

REFERENCES:
patent: 4311384 (1982-01-01), Keene
patent: 4876448 (1989-10-01), Laucht et al.
patent: 5155597 (1992-10-01), Lareau et al.

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