Structured light projector
First Claim
1. A structured light generator for illuminating a scene comprising a light source arranged to illuminate part of the input face of a light guide, the light guide comprising a tube having substantially reflective sides and being arranged together with projection optics so as to project an array of distinct images of the light source towards the scene.
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Accused Products
Abstract
This invention relates to an illumination means for illuminating a scene with a two dimensional pattern of intensity, such as an array of distinct spots or array of lines. A light source (4) such as an LED is arranged to illuminate the input face of a light guide (6), either directly or through a mask. The light guide comprises 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 (8) is arranged to project the array towards the scene with a larger depth of field than conventional techniques.
74 Citations
37 Claims
- 1. A structured light generator for illuminating a scene comprising a light source arranged to illuminate part of the input face of a light guide, the light guide comprising a tube having substantially reflective sides and being arranged together with projection optics so as to project an array of distinct images of the light source towards the scene.
Specification