| US 7,454,842 B2 | ||
| Laser surveying apparatus | ||
| Junichi Kodaira, Tokyo (Japan) | ||
| Assigned to Kabushiki Kaisha Topcon, Tokyo (Japan) | ||
| Filed on Oct. 11, 2006, as Appl. No. 11/545,472. | ||
| Claims priority of application No. 2005-309526 (JP), filed on Oct. 25, 2005. | ||
| Prior Publication US 2007/0089309 A1, Apr. 26, 2007 | ||
| Int. Cl. G01C 5/00 (2006.01) | ||
| U.S. Cl. 33—290 | 15 Claims |
| 1. A laser surveying apparatus, comprising:
a laser light source configured to emit a laser light flux;
a laser projector supported tiltably and configured to rotatably irradiate the laser light flux emitted from the laser light
source;
a mechanism tiltably supporting the laser projector;
tilting arms extending in an X-direction and a Y-direction substantially perpendicular to the laser projector;
a tilt driving section provided to at least one of the tilting arms configured to drive corresponding at least one of the
tilting arms;
detectors provided to each of the tilting arms and each configured to detect a movement amount of the corresponding one of
the tilting arms, and
an arithmetic section configured to calculate an inclination of the laser projector in the X-direction and the Y-direction
from each of the movement amounts of the tilting arms detected by the corresponding detectors.
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