Optical distance measurement device

Abstract

Abstract An optical range finder with a light transmitter (11) which emits a measuring light pulse, a light receiver (17) which receives the light reflected from the object, an optical reference path (14, 15, 16) and an evaluating unit. The range finder is distinguished by the fact that the reference path exhibits a multiple reflection element (16) which reflects the measuring light beam conducted via the reference path several times in such a manner that the receiver (17) detects a plurality of reference pulses delayed by a transit time through the multiple reflection element, and that the evaluating unit determines the range of the object from the position of light pulse reflected from the object between two reference pulses reflected several times. The range finder thus has the advantage that no internal time base is required since a time base is given by the reference pulses reflected several times.

Inventors

• 👤 Hans Spies
• 👤 Horst Dr. Laucht

Bibliographic Details