Digital light projector with improved contrast
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United States of America Patent
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Issued Date -
Jul 24, 2008
app pub date -
Jan 18, 2007
filing date -
Jan 18, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and method for projecting light including an arrangement for illuminating an array of digital micro-mirror devices with light; projecting light reflected by the array elements in an `on` state thereof; and trapping light reflected by the array elements in an `off` state thereof. The light trap is implemented with an anodized metal foam matrix. The matrix is secured relative to the array. The invention may be used in a variety of applications. In a digital light projector, a light source is included along with a prism and a projection lens. The metal foam matrix acts not only as a light trap but also as a heat-sink.
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