Optical devices particularly for remote viewing applications

Optical: systems and elements – Mirror – Plural mirrors or reflecting surfaces

Reexamination Certificate

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Details

C359S402000

Reexamination Certificate

active

07021777

ABSTRACT:
There is provided an optical device for transferring light within a given field-of-view, comprising an input aperture; reflecting surfaces, and an output aperture located in spaced-apart relationship from the input aperture such that light waves, located within the field-of-view, that enter the optical device through the input aperture, exit the optical device through the output aperture, wherein the reflecting surfaces are at least one pair of parallel reflecting surfaces and that part of the light waves located within the field-of-view that enter the input aperture, pass directly to the output aperture without being reflected off the at least one pair of parallel reflecting surfaces, while another part of the light waves within the field-of-view that enters the input aperture, arrives at the output aperture after being twice reflected by the at least one pair of parallel reflecting surfaces.

REFERENCES:
patent: 4613216 (1986-09-01), Herbec et al.
patent: 5301067 (1994-04-01), Bleier et al.
patent: 2003/0165017 (2003-09-01), Amitai
patent: 1 422 172 (1970-11-01), None
patent: 2 496 905 (1982-06-01), None
patent: 2 220 081 (1989-12-01), None

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