| 摘要 |
A surveying device is provided with a pointer light projection system (100) for projecting pointer light, a measurement optical system (32) for measuring the position of an object of measurement, and a collimation optical system (200) for collimating to the object of measurement. The optical paths of the measurement optical system (32) and collimation optical system (200) have a common portion, and a dichroic mirror (48) for separating the light of the wavelength band of the pointer light and the light of the wavelength bands on both sides surrounding this wavelength band is disposed on the common portion of the optical paths. The dichroic mirror (48) causes an imaging element (204) to receive the incident light of the wavelength bands on both sides surrounding the wavelength band of the pointer light. |
