Patent ID: 6550939
Filing Date: 2003-04-22
Classification: F21V,F21W

Abstract:
A light beam shutter apparatus for a lighting instrument, the light beam shutter apparatus comprising:a plurality of shutter mechanisms, each of said shutter mechanisms comprising: a shutter blade in the general form of a disk having a circumference and a center, said disk having a cut-out or void portion formed therein such that a portion of the circumference of the disk is eliminated by the cut-out or void portion thereof; at least one edge formed in said shutter blade, said edge passing through said center and forming a boundary of said cut-out or void portion, said edge provided for intercepting at least a portion of a beam of light; a pair of driven surfaces formed in the circumference of said shutter blade; a pair of linear driving elements, each of said linear driving elements being coupled to said shutter blade at one of said pair of driven surfaces.