Trigonometric laser measuirng head

The invention discloses a kind of measuring head used in laser trigonometry. It consists of 3-4 semiconductor lasers, lens, CCD receiver, and plane reflector. A polaroid is setup between lens and measured object. The said measuring head is able to measure the shape of object with any curved surface giving strong refletion. The cost of measuring head has been lowered. The normal direction at the measured point can be obtained.