| 摘要 |
<p>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 angleϒbetween the illumination path (55) and the device's horizontal axis (53) is preferably less than or equal to about 20 degree .</p> |
