Aperture adjusting device

FIG. 1 is a perspective view of an aperture adjusting device showing our new design;

FIG. 2 is a front view thereof, the rear view is identical image;

FIG. 3 is a top plan view thereof, the bottom plan view is identical image;

FIG. 4 is a right side view thereof, the left side view is identical image;

FIG. 5 is a perspective view of the aperture adjusting device showing a state in which the shield area is maximum;

FIG. 6 is a front view of the aperture adjusting device showing a state in which the shield area is maximum;

FIG. 7 is a front view showing changing state of the shield area between the state of FIG. 2 and the state of FIG. 6 ; and,

FIG. 8 is a front view showing changing state of the shield area between the state of FIG. 2 and the state of FIG. 6 .