Surround sensing system with telecentric optics

摘要

The invention pertains to a system (100) comprising: a source (101) to generate a pulsed radiation pattern; a detector (102); a processor (103) to process data from the detector (102) when radiation is reflected by an object; a synchronization means (104) interfacing between the detector (102) and the source (101); wherein: the detector (102) is synchronized with the source (101) so that radiation to be processed is detected only during the pulses, the processor (103) determines a characteristic of the object by determining displacement of detected spots with reference to predetermined positions, the source emits monochromatic light and the detector is equipped with a bandpass filter (1060; 1160; 1260) and optics (1030-1040;1130-1150;1230-1250) arranged so as to modify an angle of incidence onto said filter (1060; 1160; 1260) to confine light to a predetermined range around a normal of said filter (1060; 1160; 1260), said optics comprising an image-space telecentric lens.