Pentagonal roof reflecting mirror assembly for single lens refle

Details Pentagonal roof reflecting mirror assembly for single lens refle Pentagonal roof reflecting mirror assembly for single lens refle

1978-07-03

1980-06-10

Hix, L. T.

354155, 350286, G03B 1306

Patent

active

042069912

ABSTRACT:
A pentagonal roof reflecting mirror assembly for use in a viewfinder optical system of a single lens reflex camera is provided. The roof mirror assembly is of a modular form and includes an upper roof member and a lower roof support member that can be fastened together to form an enclosure that prevents the entrance of dust. The upper roof portion includes at least a pair of roof walls provided with a first and second mirror. The lower roof support member includes at least a lower light transmission wall and a side front wall provided with a third mirror positioned opposite to the first and second mirrors. The lower roof support member is molded of a transparent plastic material to permit light flux for the viewfinder optical system to enter the enclosure through the lower light transmission wall. Optical elements such as prisms, fresnel lens, plano-convex and plano-concave lenses can be molded as an integral part of the support assembly.

REFERENCES:
patent: 3182576 (1965-05-01), Papke
patent: 3387530 (1968-06-01), Ebertz
patent: 3603200 (1971-09-01), Hiruma
patent: 3618449 (1971-11-01), Hiruma et al.
patent: 3620147 (1971-11-01), Ataka et al.
patent: 3760700 (1973-09-01), Trankner et al.
patent: 3840298 (1974-10-01), Okuno
patent: 3911457 (1975-10-01), Okuno
patent: 3952321 (1976-04-01), Matui
patent: 3962710 (1976-06-01), Okuno et al.
patent: 4063261 (1977-12-01), Kuboshima

Affiliated with

Also associated with

Rating

Pentagonal roof reflecting mirror assembly for single lens refle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pentagonal roof reflecting mirror assembly for single lens refle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pentagonal roof reflecting mirror assembly for single lens refle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-860196