Optics: measuring and testing – Angle measuring or angular axial alignment – Apex of angle at observing or detecting station
Patent
1999-02-01
2000-04-25
Font, Frank G.
Optics: measuring and testing
Angle measuring or angular axial alignment
Apex of angle at observing or detecting station
33291, G01B 1126
Patent
active
060550465
ABSTRACT:
A laser transmitter includes an optical system arranged to generate laser beam and configured to project the laser beam radially so as to define a plane through which the laser beam is projected. A positioning device is coupled to the laser transmitter for adjusting an angular orientation of the optical system with respect to a first axis and with respect to a second axis. The angular orientation of the laser transmitter is adjusted so that the plane through which the laser beam is projected has a first slope with respect to the first axis and a second slope with respect to the second axis. A rotary encoder is arranged to determine a rotary position of the laser beam as it rotates to define the plane. A target is positioned in an alignment direction corresponding to the direction to which the laser transmitter is to be aligned. The laser transmitter may be aligned with respect to the first axis, the second axis or some other reference. A processor, in conjunction with a detector, determines the alignment direction. Once the alignment direction is determined, the processor calculates a first calculated slope and a second calculated slope and causes the positioning device to adjust the angular orientation of the optical system accordingly so that the plane through which the laser beam is projected corresponds to the first slope and the second slope in the alignment direction.
REFERENCES:
patent: 5852493 (1998-12-01), Monnin
Font Frank G.
Nguyen Tu T.
Spectra Precision, Inc.
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