Mechanism in single-lens reflex cameras

Details Mechanism in single-lens reflex cameras Mechanism in single-lens reflex cameras

1985-10-04

1987-06-16

Mathews, A. A.

354156, G03B 1912

Patent

active

046732713

ABSTRACT:
A mechanism controls the movement of the mirror in single-lens reflex cameras between the exposure position and the viewing position. Articulated arms 12, 13 in the mechanism are pivotally mounted both on a mirror holder 8 and to the camera body 1. The articulated arms are of two different kinds, with at least one kind exhibiting two identical arms 12, each situated on its own side of the camera body and connected together via a parallel guide bar. The articulated arms of one kind, the front articulated arms 13, extend from the mirror holder 8 to the front of the camera body 1, and the articulated arms of the other kind, the rear articulated arms 12, extend from the mirror holder 8 towards the rear of the camera body 1. The bearings C and A in the mirror holder for each type of articulated arm are situated in the same part of the mirror holder 8, with that of the front articulated arm 13 being slightly below that of the rear arm 12, viewed from the plane of the mirror. The other bearing point B, D in the camera body in the case of at least one type of articulate arms 12, 13 is situated at a height such that the bearing A, C for each articulated arm 12, 13 in the mirror holder 8, when the mirror 9 is in its upper, exposure position, is situated above said other bearing point B, D, and, when the mirror is in its lower, viewing position, is situated below said other bearing point B, D.

REFERENCES:
patent: 3468232 (1969-09-01), Knapp
patent: 3532044 (1970-10-01), Shimomura
patent: 3540365 (1970-11-01), Ishizaka et al.
patent: 3733988 (1973-05-01), Tenne
patent: 4068246 (1978-01-01), Arai
patent: 4190339 (1980-02-01), Arai

Affiliated with

Also associated with

Rating

Mechanism in single-lens reflex cameras does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mechanism in single-lens reflex cameras, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanism in single-lens reflex cameras will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-680562