Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Fumio Ohtomo0
Kazuki Osaragi0
Kunihiro Hayashi0
Date of Patent
September 19, 2006
0Patent Application Number
107321450
Date Filed
December 10, 2003
0Patent Citations Received
Patent Primary Examiner
Patent 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.
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