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Patent Searching and Data


Title:
LASER SURVEYING INSTRUMENT
Document Type and Number:
Japanese Patent JP3226970
Kind Code:
B2
Abstract:

PURPOSE: To prevent the occurrence of errors even if laser beam is repeatedly inclined to arbitray angles in a laser surveying instrument, which projects the laser beam.
CONSTITUTION: A laser projects laser beam, is provided. The laser projector 10 can be inclined at least in one direction. In this laser surveying instrument, fixed inclination detectors 20 and 21 are provided and fixed in the plane, which orthgonally intersects the axial center of the laser projector 10, in the laser projector 10. Tilting inclination detectors 65 and 66 are provided on a substrate 62, which can be tilted with respect to the axial center of the laser projector 10. The laser projector 10 is leveled so that the fixed inclination detectors 20 and 21 indicate the level attitude, or the tilting inclination detectors 65 and 66, which are made to agree with the fixed inclination detectors 20 and 21, indicate the level atittude. Thus, the level reference plane is obtained. The tilting inclination detectors 65 and 66 are inclined with the fixed inclination detectors 20 and 21 as the references. The laser projector 10 is leveled so that the inclined tilting inclination detectors 65 and 66 indicate the level attitude. Thus, the reference plane, which is inclined to an arbitray angle, is obtained.


Inventors:
Hirano, Satoshi
Shinozaki, Hirobumi
Application Number:
JP1992000206014
Publication Date:
November 12, 2001
Filing Date:
July 09, 1992
Export Citation:
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Assignee:
TOPCON CORP
International Classes:
G01C5/00; G01B11/26; G01C15/00; (IPC1-7): G01C15/00; G01C5/00
Attorney, Agent or Firm:
三好 祥二