Laser measuring method and laser measuring system having...

Details Laser measuring method and laser measuring system having... Laser measuring method and laser measuring system having...

2007-03-27

2007-03-27

Le, Que T. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S559300

Reexamination Certificate

active

11070912

ABSTRACT:
A laser measuring method in a laser measuring system, which comprises a rotary laser system for projecting a laser beam by rotary irradiation and at least one photodetection system having at least one photodetector for receiving the laser beam, comprising a step of emitting at least two fan-shaped laser beams by the rotary laser system, at least one of the fan-shaped laser beams being tilted, a step of receiving the laser beams at least at three known points by the photodetection system, a step of obtaining elevation angles with respect to the rotary laser system based on photodetection signals which are formed when the photodetector receives the laser beam, and a step of measuring an installing position of the rotary laser system based on elevation angles and position data at the three known points.

REFERENCES:
patent: 5100229 (1992-03-01), Lundberg et al.
patent: 6646732 (2003-11-01), Ohtomo et al.
patent: 1 524 498 (2005-04-01), None
patent: 2002-039755 (2002-02-01), None
patent: 2003-214852 (2003-07-01), None
patent: 2004-212058 (2004-07-01), None

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