Position determining apparatus

Details Position determining apparatus Position determining apparatus

2006-04-04

2006-04-04

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C356S141100

Reexamination Certificate

active

07022962

ABSTRACT:
The present invention provides a position determining apparatus that has a simplified configuration adapted to produce a horizontal reference plane and an inclined reference plane simultaneously. A position determining apparatus (100) according to the present invention comprises a rotary laser apparatus (151) that emits at least two fan-shaped laser beams diverting in a plane other than horizontal plane while rotating the laser beams about a given optical axis, and an optical sensor (154) that has at least one light receiving section receiving the fan-shaped laser beams. One of the fan-shaped laser beams is different in inclination angle from the other, and in terms of a state of the laser beams received at the light receiving section, a relative position of the optical sensor to the rotary laser apparatus can be determined.

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patent: 199 41 030 (2001-04-01), None
patent: 1 174 682 (2002-01-01), None
patent: 09292218 (1997-11-01), None

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