| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotating laser system which can easily divide a laser beam and which can avoid generation of shakes due to the rotational vibration, as much as possible. SOLUTION: In the rotating laser device 1 provided with a light projecting part 3 for performing the rotational projection of at least two fan beams spreading like a fan, with respect to a direction perpendicular to the rotating axis, the light projection part 3 is composed of a laser light source part for emitting the laser light in the direction of the rotating axis and a rotational irradiation part 3B for performing the rotational irradiation with the laser light from the laser light source part in a direction perpendicular to the rotating axis. The rotating irradiation part 3B includes a plurality of pentaprisms 20e-22e, arranged in the direction of the rotational axis, according to the number of the fan beams so as to differentiate the emission directions and beam splitters 23 and 24 for dividing the laser light required by the arranged pentaprisms. COPYRIGHT: (C)2006,JPO&NCIPI
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