Patent ID: 7338222

Claim:
An aperture apparatus comprising: a substrate having a lens opening; a first small aperture sector having a first small aperture opening and a first cam opening; a second small aperture sector having a second small aperture opening and a second cam opening; and a drive pin that is engaged in the first cam opening and the second cam opening to swing the first small aperture sector and the second small aperture sector, wherein the first small aperture opening and the second small aperture opening shield the lens opening and change a small aperture state; wherein the first small aperture sector and the second small aperture sector are located in receding positions from the lens opening, when the drive pin is in an initial position; wherein the first cam opening and the second cam opening each include a swing region and a non-swing region; wherein the swing region is provided for guiding one of the first small aperture sector and the second small aperture sector to the lens opening as the drive pin moves from the initial position and is provided for guiding said one of the first small aperture sector and the second small aperture sector to the receding position as the drive pin moves to the initial position; and wherein the non-swing region is provided for retaining the other sector in the receding position, when said one of the first small aperture sector and the second small aperture sector is guided to the lens opening.