Optical imaging system

Details Optical imaging system Optical imaging system

1998-05-21

2000-09-12

Nguyen, Thong

Optical: systems and elements

Compound lens system

Variable magnification

359353, 359365, 359421, G03B 1306, G03B 1700

Patent

active

061185833

ABSTRACT:
A two-stage optical imaging system which is capable of operating in the infra red and which is compact, the system comprising an objective generally in the form of a Cassegrain system with primary and secondary mirrors A, B together with a relay C which may be reflective, refractive or refractive and diffractive, the relay C being located co-axially between the primary and secondary mirrors A, B.

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