Patent ID: 6752542
Filing Date: 2004-06-22
Classification: G03B

Abstract:
A lens shutter mechanism comprising:a support frame having a photographing aperture; at least three shutter sectors which open and close said photographing aperture via rotating shutter axes which extend parallel to the optical axis; and at least three diaphragm sectors which vary an aperture diameter formed by said diaphragm sectors to restrict the diameter of said photographing aperture, independently from said shutter sectors, via rotating diaphragm axes each of which respectively extend in a direction coaxial with the shutter axis; wherein said support frame is provided with rotational center portions spaced from each other at equi-angular intervals about the optical axis, the number of said rotational center portions being the same as at least one of the number of said shutter sectors and the number of said diaphragm sectors; and wherein each of said rotational center portions rotatably and coaxially supports a said shutter sectors and a said diaphragm sector.