Patent ID: 8876303

Claim:
A lens barrier device comprising: first and second barrier blades positioned on an object side with respect to an imaging lens, each of the first and second barrier blades configured to rotate so as to allow opening and closing; a barrier base retaining the first and second barrier blades; and a drive unit configured to open and close the first and second barrier blades, wherein the first barrier blade is on the object side with respect to the second barrier blade, and wherein the first and second barrier blades are arranged between a guide portion provided on the barrier base and a regulating portion provided on the barrier base, the guide portion receiving an opposite side against the object side of the second barrier blade and guiding the second barrier blade in rotation of the second barrier blade, the regulating portion positioned on the object side of the first barrier blade and configured to regulate the position in the optical axis direction of the first barrier blade in rotation of the first barrier blade.