G - Physics – 01 – B
Patent
G - Physics
01
B
88/94
G01B 11/26 (2006.01) G01B 11/27 (2006.01)
Patent
CA 1219477
ABSTRACT An apparatus and method of sweeping a substantially flat optical plane substantially perpendicular to an incident laser beam is disclosed. A penta-prism, optical detector and adjustment means are disposed in a housing adapted to be mounted on a rotatable spindle. When so mounted, the penta-prism is disposed a predetermined distance from the point of intersection of the axis of rotation of the spindle and the axis of a properly oriented laser beam. The optical detector determines whether the axis of the incident laser beam intersects the point of intersection and the adjustment means translates the incident laser beam until its axis substantially intersects the point of intersection in response to the output of the detector means. When this is accomplished, the penta-prism will produce a substantially flat optical plane when the housing is rotated on the spindle.
423231
Hamar Martin R.
Moffat & Co.
LandOfFree
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