| 摘要 |
<p>A laser surveying instrument comprises a light source unit (2) which has two or more light emission sources (8a,8b) for emitting pulsed distance measuring lights (10a,10b) with different wavelengths, a pulse driving unit (9) for performing time sharing and emitting the pulsed distance measuring lights for every wavelength, a light projecting unit (3) for projecting the pulsed distance measuring lights with the two or more wavelengths on an optical axis (13), a deflection member (11) which is provided on the optical axis, has two or more reflection surfaces which reflect each wavelength of the pulsed distance measuring lights alone, divides the pulsed distance measuring lights for every wavelength, and deflects each of the distance measuring lights to direct an object to be measured, and a single photodetection element (12) for receiving reflected distance measuring lights from the object to be measured, and in the laser surveying instrument, a measurement of distance is performed for every pulsed distance measuring light based on a photodetection signal (24) produced by the photodetection element.</p> |
