Patent ID: 9711251
Date: 2017-07-18
CPC Classifications: G21K

Claim:
1. A variable angle slant hole collimator, comprising: a frame including opposing sides, opposing ends, and a front panel having an opening therein; a plurality of substantially planar leaves stacked against said front panel in said frame, said stack including a top leaf with a face; an array of apertures arranged in an identical pattern in each of said leaves, said leaves capable of alignment in an initial position wherein said apertures in said leaves are axially aligned with one another and at 90° with respect to the face of the top leaf; a means for positioning each of said leaves in said stack of said leaves in a controlled manner such that each leaf slides at a predetermined rate with respect to the surrounding leaves in the stack; and said means for positioning said stack includes a lead screw and two wedge blocks on each end of said frame and an actuator for driving said lead screws.