Laser Triangulation Measurement Principle

When measuring the distance to an object, laser triangulation is a commonly used method. It uses laser beam characteristics and trigonometry to calculate distance by measuring beam angles and positions. This article explains the principle and applications of laser triangulation.

The basic principle uses straight-line propagation of light and trigonometric relations. During measurement, a laser rangefinder and a reflector are used. The instrument emits a laser beam that reflects off the target. The device records emission and reflection angles and applies trigonometric formulas to compute the distance.

In practice, by measuring beam angles and timing, the system calculates distance using appropriate formulas. Laser triangulation is widely used where remote, accurate distance measurement is required, such as in construction surveying, geological exploration, and robot navigation. It offers high accuracy, long range, and fast measurement.

Limitations include atmospheric effects, surface roughness of reflectors, and instrument stability, all of which can affect accuracy. Attention to these factors and proper instrument setup can improve measurement reliability.

In summary, laser triangulation uses laser beam geometry and trigonometry to determine distance and is widely applied due to its accuracy and speed. Proper consideration of environmental and equipment factors will enhance its effectiveness.