Variable aperture formed by linearly movable elements

Details Variable aperture formed by linearly movable elements Variable aperture formed by linearly movable elements

G - Physics

02

B

95/82

G02B 26/02 (2006.01) G02B 5/00 (2006.01) G03B 9/02 (2006.01)

Patent

CA 1316739

-0- VARIABLE APERTURE FORMED BY LINEARLY MOVABLE ELEMENTS ABSTRACT OF THE DISCLOSURE A plurality of aperture blades are each provided with an opening having a V-shaped edge, such that when the blades are superimposed they cooperate to define a six-sided aperture. The blades are each mounted for rectilinear movement by a pair of guide pins. Cam pins supported on a driver rotated by a stepper motor engage cam slots in the blades and position them rectilinearly to change the aperture size.

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