Abstract

A tracking distance-measuring equipment for measuring the distance from a moving target on the principle of triangulation by electrically detecting the respective dislocations of first and second images focused on the image sensors of paired first and second optical systems disposed side by side from the optical axis through the comparison of image signals provided by the image sensors respectively representing the first and second images. A window is set in a specific portion of either the first or second image signal, image signals provided by the image sensors are sampled periodically at predetermined intervals. The sample image signals provided by one of the image sensors are compared with the window set in an image equivalent to the sample image signal provided by the other image sensor at a sampling point. The tracking distance-measuring equipment is capable of continuously measuring the distance from the moving target and determining the direction and distance of movement of the target.