Camera having interchangeable objective lens

Details Camera having interchangeable objective lens Camera having interchangeable objective lens

1998-06-22

2000-10-03

Gray, David M.

Photography

Single lens reflex camera

348342, 348374, G03B 1912

Patent

active

061263346

ABSTRACT:
An optical filter, such as a low-pass filter, which is disposed between a photo-taking lens mounted on a mount part of the camera body having an image sensor disposed on an image forming plane and a main mirror disposed within the camera body, is held in position jointly by a holding member fixed to the lower end of a front aperture part of the camera body and an elastic member fixed to the rear side of the holding member with a resilient force applied to the optical filter. In mounting the photo-taking lens on the camera body, when an end part of the photo-taking lens comes to touch the optical filter, the optical filter is allowed to temporarily move to escape from the photo-taking lens and to come back to its original position upon completion of the lens mounting operation.

REFERENCES:
patent: 4757387 (1988-07-01), Saito
patent: 5483284 (1996-01-01), Ishiguro

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