Compact afocal reimaging and image derotation device

Details Compact afocal reimaging and image derotation device Compact afocal reimaging and image derotation device

1990-08-06

1992-01-07

Henry, Jon W.

Optical: systems and elements

Compound lens system

With curved reflective imaging element

359401, 359859, 359641, G02B 1706, G02B 2730, G02B 2700

Patent

active

050785028

ABSTRACT:
The present optical system provides an all-reflective afocal reimaging system. A reflective system receives, by means of an entrance aperture, and reflects radiation or light through the system such that the radiation or light is imaged and recollimated as it is reflected through the system. The radiation or light exits at an exit aperture which is an image of the entrance aperture. High quality images of both the collimated scene and reimaged aperture are formed by the optical system. Embodiments are shown by which the optical system can be used as an optical derotation device by the inclusion of two planar mirrors located near the entrance and exit apertures.

REFERENCES:
patent: 3190171 (1965-06-01), Reed
patent: 3748015 (1973-07-01), Offner
patent: 4632521 (1986-12-01), Korsch
patent: 4804258 (1989-02-01), Kebo

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