Abstract
An optical radar sensor is described that scans space with a light beam in the shape of a quadrangular prism by using a cross-axis pendulous galvano mirror, and detects an object and measures the distance to the object according to the light reflected from the object. The basic requirements of safety assurance by space monitoring and the safety requirements of the radar sensor are logically defined. Examples are given of the concrete configuration and characteristics of the radar sensor. It is demonstrated that the optical radar sensor outperforms the camera studied as protective device in combination with image processing.
