G - Physics
02
B
G02B 25/04 (2006.01)
Patent
CA 2131964
SPYHOLE VIEWER ABSTRACT OF THE DISCLOSURE The invention provides a spyhole viewer for a door or wall, including an objective system for producing a real, inverted image and mounted in a tubular member fixedly installable in the door or wall, an erector for inverting the inverted image and located behind at least one of the elements of the objective system in the path of the optical axis thereof, at least one reflector for angularly deflecting the light beams from the objective system, an image surface upon which the real image will appear, the surface located between the erector and the reflector. The image surface can be selectively swung out from the path of light rays coming from the objective system. A housing is fixedly attachable to the tubular member and accommodates the erector, the image surface r the reflector and a viewing lens for magnifying the real image as inverted by the erector.
Goldstein Pinchas
Swabey Ogilvy Renault
LandOfFree
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