Rangefinding system

摘要

This invention is directed to a rangefinding system which includes a light beam source, a plurality of light receiving elements disposed to receive an image light spot reflected from a target object existing in any one of a group of distance zones in such manner that the image light spot is projected on one or more of the light receiving elements, the light receiving elements being adapted to produce a combination of outputs, the contents of which vary depending on the distance between the target object and the rangefinding system the invention also includes a logic circuit for producing signals indicating the distance zone in which the target object exists, the signal generated in response to the combination of outputs, so that the space occupied by the light receiving elements can be advantageously decreased and the precision of rangefinding can be improved.