Optics: measuring and testing – Angle measuring or angular axial alignment – Apex of angle at observing or detecting station
Reexamination Certificate
2008-05-19
2009-12-15
Tarcza, Thomas H (Department: 3662)
Optics: measuring and testing
Angle measuring or angular axial alignment
Apex of angle at observing or detecting station
Reexamination Certificate
active
07633609
ABSTRACT:
A measuring system, comprising a surveying instrument for projecting a laser beam by rotary irradiation and a photodetection sensor device installed at a measuring point, wherein the surveying instrument comprises a first radio communication unit, the photodetection sensor device comprises a second radio communication unit, and communication can be performed between the surveying instrument and the photodetection sensor device, wherein the surveying instrument comprises an angle detecting means for detecting a horizontal angle in a projecting direction of the laser beam and a first arithmetic unit for controlling the angle detecting means based on a receiving signal from the first radio communication unit, and the photodetection sensor device comprises a photodetection unit for receiving the laser beam and a second arithmetic unit for performing transmission of a photodetection notifying signal to notify the receiving of the laser beam by the photodetection unit and also for performing transmission of a synchronization data by the second radio communication unit to the first radio communication unit, wherein the first arithmetic unit calculates a horizontal angle of the projection of the laser beam when the photodetection sensor device receives the laser beam based on the photodetection notifying signal and the synchronization data.
REFERENCES:
patent: 6693706 (2004-02-01), Kahle et al.
patent: 7110102 (2006-09-01), Ohtomo et al.
patent: 10-246634 (1998-09-01), None
patent: 2004-212058 (2004-07-01), None
patent: 2006-337302 (2006-12-01), None
patent: 2008-082895 (2008-04-01), None
Kamizono Fumihiko
Kumagai Kaoru
Ohtomo Fumio
Kabushiki Kaisha TOPCON
Nields, Lemack & Frame, LLC
Ratcliffe Luke D
Tarcza Thomas H
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