| 摘要 |
<p>A laser irradiation system according to the present invention comprises a laser light emitter section (5) for emitting a laser beam, a rotator (6) for irradiating the laser beam emitted from said laser light emitter by rotary irradiation and for forming a laser plane, a tilt setting unit (3) for tilting said rotator (6) and said laser plane, a photodetection unit (32) integrated with said tilt setting unit (30) for receiving a reflection laser beam reflected from a target which reflects the laser beam from said rotator (6) as a reflection laser beam, wherein said photodetection unit (32) comprises a photodetection element (51) being long in a scanning direction of the laser beam. The photodetection unit (32) is provided separately from the laser light emitter section (5). <IMAGE> <IMAGE></p> |
