Bellows camera objective lens - has aperture control on key plate with ring drive and tensioning springs and coupling to camera controls

摘要

The camera objective lens with aperture control is mounted with coupling units esp. for use on the lens panel of a camera with bellows. A mounting plate (3) carries the adjusting mechanisms (4, 5) with associated tensioning springs (6 to 9) so that the aperture blades (10, 11) are operated by rotational movement around the lens axis. An annular intermediate ring in the camera mounting carries the plate (3) which holds the adjusting mechanism. A C-shaped curved lever (12) is provided and fits around at least over a semicircular path.