Patent ID: 6912097

Claim:
An iris diaphragm comprising an annular base and an annular rotatable element, a plurality of leaves having opposite first and second end portions, first means for freely pivotally connecting each leaf first end portion to one of said annular base and annular rotatable element, second means for pivotally slidably connecting each leaf second end portion to the other of said annular base and annular rotatable element, each first means including an opening in one of said annular base and annular rotatable element through which passes a tubular connecting portion punched from the material of the associated leaf, a terminal end of each tubular connecting portion being folded back against the one of said annular base and annular rotatable element to effect a secure free pivotal connection therebetween, and said second means including a slide pin carried by each leaf second end portion which is slidably and pivotally engaged with a slide provided on the other of said annular base and annular rotatable element.