Optics: measuring and testing – Fiducial instruments
Patent
1998-11-12
2000-12-12
Font, Frank G.
Optics: measuring and testing
Fiducial instruments
G01C 902
Patent
active
061606162
ABSTRACT:
The present invention relates to a laser surveying apparatus capable of forming a measuring reference line and a reference plane by laser light. Particularly, it is an object of the present invention to provide a laser surveying apparatus capable of forming a reference line and a reference plane each inclined a predetermined angle toward a horizontal plane as well as a horizontal reference line and a reference plane. According to the present invention, a mount unit is rotated about a vertical axis and a light source provided in the mount unit applies laser light in a direction parallel to a horizontal axis. A laser projection unit supported by the mount unit is rotated about the horizontal axis and a rotating irradiator provided in the laser projection unit turnably applies laser light onto a reference plane. First deflecting means provided in the laser projection unit can deflect laser light emitted from the light source in an intersecting direction, and second deflecting means provided in the rotating irradiator can deflect laser light outputted from the first deflecting means in an intersecting direction.
REFERENCES:
patent: 5636018 (1997-06-01), Hirano et al.
patent: 5825555 (1998-10-01), Oono et al.
patent: 5978148 (1999-11-01), Oono et al.
Hayashi Kunihiro
Nishi Masayuki
Ohtomo Fumio
Font Frank G.
Kabushiki Kaisha Topcon
Stafira Michael P.
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