Frequency selective reflex sight

Details Frequency selective reflex sight Frequency selective reflex sight

1973-10-01

1977-06-21

Evans, F. L.

Optics: measuring and testing

Fiducial instruments

Reticle lies outside viewing path

350174, 356254, G02B 2734

Patent

active

040308391

ABSTRACT:
A reflex gun sight is disclosed which provides a collimated image of a reticle, which reticle is lighted by ambient down range light. This image and the view of a target are combined by a frequency selective beam combining device. The frequency selective combination causes the reticle to appear to an observer in a color which contrasts with the target.

REFERENCES:
patent: 683203 (1901-09-01), Grubb
patent: 2633051 (1953-03-01), Davis
patent: 2780130 (1957-02-01), Mauer
patent: 2852974 (1958-09-01), Nobles
patent: 3230819 (1966-01-01), Noxon
patent: 3880529 (1975-04-01), Althause et al.

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