Continuously variable microdiaphragm.

摘要

A continuously variable microdiaphragm has an aperture (3) of which the shape of the cross section remains the same when the aperture becomes greater or smaller. The aperture is lozenge-shaped and is bounded by two recesses each disposed in a separate diaphragm strip (1a, 1b; 2a, 2b). Each of these strips is fixed on or forms part of a transmission leg (4, 5, 30, 31). These legs can be shifted symmetrically relative to each other.