Penta-prism module having laser alignment error detection and co

Details Penta-prism module having laser alignment error detection and co Penta-prism module having laser alignment error detection and co

1982-05-24

1984-08-28

Buczinski, S. C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

350 64, 350286, 350287, 356138, 356247, 356248, G01B 1126, G02B 718, G01C 902

Patent

active

044681194

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.

REFERENCES:
patent: 3902810 (1975-09-01), Hamar
patent: 4045129 (1977-08-01), Hamar
patent: 4297031 (1981-10-01), Hamar
patent: 4382680 (1983-05-01), Hamar
Penta Prism Behavior in Optical Tooling Techniques; Engis Equipment Co., 431 S. Dearborn St., Chicago; 5/11/81.

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