Patent ID: 7237342

Claim:
An optical axis adjusting mechanism installed on a laser ruler, the laser ruler comprising a secondary bracket with a sink, the optical axis adjusting mechanism comprising: a first body, accommodated in the sink, comprising a reflection element for directing the laser beam toward a laser transmitter; a second body rotatably assembled on the secondary bracket of the laser ruler, the second body being rotatably and movably assembled with the first body; a first adjusting element for applying a torque on the second body along a direction of the optical axis of a received light beam, thereby the second body rotating with respect to the secondary bracket; a second adjusting element for applying a torque on the first body along the direction of the optical axis of the received light beam, thereby the first body rotating with respect to the second body; and a third adjusting element disposed between the first body and the second body, for adjusting a distance between the first body and the second body by moving the first body.