Geometrical instruments – Straight-line light ray type – Vertical and horizontal angle measurer
Reexamination Certificate
2011-01-04
2011-01-04
Bennett, G. Bradley (Department: 2841)
Geometrical instruments
Straight-line light ray type
Vertical and horizontal angle measurer
C033S290000
Reexamination Certificate
active
07861423
ABSTRACT:
A surveying instrument for measuring three-dimensional position of a measured object, has a detecting section for detecting a direction of the measured object by rotational emission of two or more fan-shaped laser beams in which at least one beam is inclined; an optical system including a tracking-light-emitting section for emitting a tracking light and a distance-measuring-light-emitting section for emitting a distance-measuring light; a tracking-light-receiving section for receiving the tracking light reflected by the measured object; and a driving section for driving the optical system in order to collimate the measured object according to an output of the detecting section and an output of the tracking-light-receiving section.
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Kamizono Fumihiko
Kumagai Kaoru
Bennett G. Bradley
Brinks Hofer Gilson & Lione
Kabushiki Kaisha Topcon
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