Laser surveying system

Abstract

A laser surveying system includes a rotational light emitting unit to rotationally emit a laser beam, having a case and a beam emitter supported on the case with an optical axis of the laser beam rotatable relative to the case, and a light receiving unit to receive the laser beam from the rotational light emitting unit and perform surveying of a light-receiving position, wherein the laser surveying system is configured to determine whether or not the laser beam received by the light receiving unit has been properly emitted from the rotational light emitting unit on the basis of a rotational position of the optical axis of the laser beam relative to the case and an angle of site of the laser beam relative to a reference plane including the optical axis.

Dependencies are inferred from the claim text.