SURVEYING INSTRUMENT

Provided is a surveying instrument including a distance measuring light projector configured to project a distance measuring light to an object, a distance measuring light receiver having a photodetector configured to receive a reflected distance measuring light from the object, a tracking light projector configured to project a tracking light to the object, and a tracking light receiver having a tracking photodetector configured to receive a reflected tracking light from the object, in which the distance measuring light receiver and the tracking light receiver have a receiving prism, and the receiving prism is configured to internally reflect the reflected distance measuring light and the reflected tracking light more than once, then separate the reflected distance measuring light from the reflected tracking light, cause the reflected distance measuring light and the reflected tracking light to be received by the photodetector and the tracking photodetector.