Working position measuring system

Details Working position measuring system Working position measuring system

2006-09-19

2006-09-19

Tarcza, Thomas H. (Department: 3662)

Optics: measuring and testing

Angle measuring or angular axial alignment

Apex of angle at observing or detecting station

C356S142000, C356S145000, C356S147000, C356S141100

Reexamination Certificate

active

07110102

ABSTRACT:
A working position measuring system, comprising a rotary laser device for irradiating and rotating a laser beam and a photodetection sensor device for receiving the laser beam and for detecting a working position, wherein the rotary laser device comprises a laser projector for projecting at least two fan-shaped beams with at least one beam tilted, and the photodetection sensor device comprises at least one photodetection unit for receiving the fan-shaped beams and an arithmetic unit for calculating an elevation angle relative to the rotary laser device based on photodetection signals produced when the photodetection unit receives the light beam.

REFERENCES:
patent: 5767960 (1998-06-01), Orman
patent: 5774207 (1998-06-01), Yoshida et al.
patent: 6286607 (2001-09-01), Ohtomo et al.

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