Projector
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United States of America Patent
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Oct 24, 2017
Issued Date -
N/A
app pub date -
Jan 18, 2016
filing date -
Jan 23, 2015
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Abstract
A projector includes a light source, a digital micro-mirror device (DMD), a first prism, a second prism, and a lens. The light source is used for emitting an incident light. The DMD is used for receiving and reflecting the incident light as an image light. The first prism is disposed between the light source and the DMD. The second prism is disposed between the first prism and the DMD. The first prism includes a first plane, a second plane, and an intermediate portion. The intermediate portion adjoins the first plane and includes a reflecting portion. The incident light from the second plane is reflected by the reflecting portion and then passes through the second plane. The second prism includes a fourth plane, a fifth plane, and a sixth plane. When the DMD is operated in an on-state, the image light passes through the sixth plane.
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