Structured light generator

摘要

A structured light generator (2) for illuminating a scene with a two dimensional pattern of intensity, such as an array of distinct spots or array of lines has a light source (4) such as an LED arranged to illuminate the input face of a light guide such as kaleidoscope (6). The light guide is a solid or hollow tube, generally of a constant, regular cross section which is arranged to create multiple images of the light source. Projection optics such as lens (8) is arranged to project the array towards the scene. The structured light generator (2) may be used with a range finding apparatus such as an imaging range finding system.