Patent ID: 7982974
Filing Date: 2011-07-19
Classification: A61B,G02B,G03B

Abstract:
1. An image pickup apparatus comprising a variable aperture unit, the variable aperture unit comprising; a bifocal lens for image pickup; a variable aperture mechanism including an aperture blade member operable to vary an aperture opening diameter of the bifocal lens, and a substrate for positioning the aperture blade member with respect to the bifocal lens and rotatably installing the aperture blade member in a direction orthogonal to a central axis of an opening diameter of the aperture; and a connecting portion for connecting and fixing a surface of the bifocal lens and the substrate of the variable aperture mechanism; wherein the bifocal lens is connected and fixed to the substrate of the variable aperture mechanism by the connecting portion in a state of being positioned to cause an optical axis of the bifocal lens to match a central axis of the aperture opening diameter when the aperture opening diameter is restricted by the aperture blade member of the variable aperture mechanism.