Optical distance sensor and optical distance measuring device

It is an object to provide an optical distance sensor and an optical distance measuring device, which are able to increase detection accuracy in detecting the presence or absence of an object to be detected. An optical distance sensor is of a light projection unit projected for directing light to an object to be detected, a light receiving unit having a plurality of light receiving devices arranged in a linear shape for receiving light reflected by the detecting object, outside of the projected light L1 and outputting signals corresponding to the received light amount are arranged, a detecting portion of a received light spot for detecting a received light spot on the light receiving unit on the basis of the outputs of the received light means a dot number determining means for determining the number of received light spots on the basis of the result of the determination of the detection portion of a received light spot, a point position determining section for determining a one-dimensional position at which the amount of light received within the received light spot ma ximal is formed on the basis of the result of the detection by the detection section of a received light spot and an object detection processing portion for outputting detection signals indicative of the presence or absence ...