Document Type and Number: United States Patent Application 20120032875
Kind Code: A1

Abstract:

An imaging system includes one or more light sources configured to produce one or more light beams. An additional light source produces an additional light beam, which may be a non-visible light beam like an infrared beam. A spatial light modulator is configured to produce images on a projection surface by scanning the light beams and the additional light beam within an image cone oriented in a first direction. A partial reflector is disposed within the image cone and is configured to pass at least a portion of the light beams and reflect at least a portion of the additional light beam within a second cone oriented in a second direction.

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