TIR prism for DMD projector
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United States of America Patent
Stats
-
Apr 27, 2004
Grant Date -
May 29, 2003
app pub date -
Nov 22, 2002
filing date -
Nov 28, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A light engine (9) for a projection display is provided which employs: 1) at least one light source (25), 2) at least one TIR prism assembly (13), and 3) at least one digital micromirror device (15), wherein: (a) the illumination path (55) between the light source (25) and the prism assembly (13) is unfolded, i.e., the illumination path is free of fold mirrors; and (b) the angle .gamma. between the illumination path (55) and the device's horizontal axis (53) is preferably less than or equal to about 20.degree..
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