Coaxial unfocused optical sensor for dual mode seekers

Abstract From the Canadian patent

The present invention is directed to an unfocused optical sensor including a dual mode optical and radio frequency (RF) sensor system for use with a guidance system of a munition. The inventive system comprises an optical sensor comprising a plurality of optical detector units. The optical detector units each produce an optical detector output signal upon illumination with optical energy. In a dual mode embodiment the sensor may further comprise an optional rf sensor which produces an rf sensor output signal. In the case of the dual mode sensor the optical detector units are arranged in an annulus mounted coaxially with the transreflector and twist reflector about the longitudinal axis of …