Marking apparatus having feedback-controlled rotational laser be

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element

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359211, 359 22, 250234, G02B 2608

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active

057483531

ABSTRACT:
A rotating laser apparatus having a reciprocating laser scanning system which facilitates visual recognition of a laser beam on an object to be measured by raising an effective energy, level on the object. In the apparatus the laser beam is rotated by a rotation device. The reciprocating laser scanning system includes reflection members for reflecting the laser beam, a laser beam detector for detecting a return laser beam reflected from the reflection members, and a microcomputer for controlling a rotation of the rotation device in accordance with the output of the laser beam detector.

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Product brochure entitled "Gradelight Pipelaser" published by AGL Corp., Jacksonville, Arizona (Nov. 1991).
Product brochure entitled "Dialgrade.RTM. Model 1165 and 1160" published in the U.S. by Spectra-Physics Laserplane, Inc. Dayton, Ohio (Apr. 1993).

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