Optics: measuring and testing – Angle measuring or angular axial alignment
Patent
1998-01-29
1999-11-02
Font, Frank G.
Optics: measuring and testing
Angle measuring or angular axial alignment
35613906, 35613907, 356400, 33290, G01B 1126, G01B 1100, G01C 500
Patent
active
059780762
ABSTRACT:
A reference light generator that is capable of switching the scan plane of a laser beam between the horizontal and the vertical simply by changing the installation position of the reference light generator.
A laser beam is emitted from a laser diode 1. A half mirror 3 guides the laser beam to transparent containers 5 and 7. When the reference light generator is used to determine the degree of horizontality, it is installed so that the transparent container 5 is positioned at the top. In this case, a movable light shielding plate 4 blocks the laser beam that travels toward the transparent container 7. The prism effect of a silicon oil 71 inside the transparent container 5 corrects the inclination of the laser beam that passes through the silicon oil 71. A rotation-type pentagonal prism 9 emits only the inclination-corrected laser beam from the reference light generator. When the reference light generator is used to determine the degree of verticality, it is installed so that the transparent container 7 is positioned at the bottom. In this case, the movable light shielding plate 4 blocks the laser beam that travels toward the transparent container 5. The prism effect of a silicon oil 72 inside the transparent container 7 corrects the inclination of the laser beam that passes through the silicon oil 72. The rotation-type pentagonal prism 9 emits only the inclination-corrected laser beam from the reference light generator.
REFERENCES:
patent: 4792228 (1988-12-01), Haffner
patent: 5033847 (1991-07-01), Hamblin et al.
patent: 5272814 (1993-12-01), Key
patent: 5500524 (1996-03-01), Rando
patent: 5838431 (1998-11-01), Hara et al.
patent: 5894370 (1999-04-01), Okuda et al.
Patent Abstracts of Japan: 63-222214, Sep. 1988, TOGA.
Patent Abstracts of Japan: 08075466, Mar. 1996, Kitajima.
Patent Abstracts of Japan: 08240431, Sep. 1996, Kitajima.
Patent Abstracts of Japan: 08240432, Sep. 1996, Kitajima.
Noriyuki Toga, "Reference Beam Correcting Radiator For Surveying Instrument", 2-126111, Appl. No. 63-279690, May 15, 1990.
Font Frank G.
Nikon Corporation
Punnoose Roy M.
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