Rotary laser emitting apparatus and laser measurement system

A laser measurement system comprising:

• a rotary laser emitting apparatus that rotates and emits a laser beam;
• and
• a laser receiving apparatus,
• the rotary laser emitting apparatus including:
• an emission-side control unit that controls an entire operation of the apparatus;
• a laser emitting mechanism that emits the laser beam while rotating an a irradiation optical axis that is an emission direction of the laser beam;
• and
• a rotating direction detecting unit that detects a rotating direction of the irradiation optical axis,
• wherein the emission-side control unit generates a rotating posture signal showing the rotating direction of the irradiation optical axis detected by the rotating direction detecting unit and drives the laser emitting mechanism for superimposing the rotating posture signal on the laser beam,
• wherein the laser receiving apparatus receives the laser beam emitted from the rotary laser emitting apparatus to perform measurement of a light receiving position thereof,
• wherein the laser receiving apparatus includes a light receiving-side control unit that controls an entire operation of the apparatus,
• wherein the light receiving-side control unit extracts the rotating posture signal from the laser beam received in the laser receiving apparatus and obtains a rotating direction of the irradiation optical axis from the rotating posture signal.