BEAM SPLITTER AND LASER COAXIAL RANGEFINDER AND APPLICATION THEREOF

摘要

A beam splitter (3) and a laser coaxial rangefinder and application thereof, comprising a light beam source and also comprising a second lens (2), the beam splitter (3) and a first lens (4) arranged in sequence in a direction of optical axis. The beam splitter (3) is provided with a transflective region (A) and a reflective region (B) thereon. Light beams emitted from the light beam source pass through the transflective region (A) and the first lens (4) and then form parallel light beams incident on a target object (6). The light beams are reflected by the target object (6), aggregated by the first lens (4) and reflected by the reflective region (B) and the transflective region (A) to a measurement position or observation position. The beam splitting system can be applied to a measurement system or an observation system. The present invention addresses the problem in which a detection blind spot is caused by leakage of laser returned by an object present in a perforation method, thereby increasing the signal-to-noise ratio of the detection, enabling coaxial measurement of ordinary objects and also enabling coaxial measurement of distant objects and weakly reflective and specularly reflective objects.