| 摘要 |
The present invention provides an enhanced illumination system for a micro-display. In one embodiment, the invention is an illuminator for a reflective display panel having a light source and a prism. The prism has a first substantially planar face proximate to the light source and to the display panel, so that light propagates from the light source into the prism through the first face and is redirected to the display panels through the first face. A second face of the prism opposite the light source so that light reflected from the display panel impinges on the second face to propagate to imaging optics. The illuminator may also include an auxiliary prism optically coupled to the second face of the first prism to correct for astigmatism of the reflected light from the display panel and a beam splitter between the first prism and the auxiliary prism, wherein light from the light source is reflected by the beam splitter to the imaging optics. In another embodiment, the invention is an illuminator for a reflective display panel having a light source, a converging optical element to receive light from the light source and a prism. The prism has a first face to receive light from the converging optical element, the prism receiving light from the light source and redirecting it as diverging light to the display panel, and a second face opposite the display panel for receiving light reflected from the display panel and propagating the reflected light to imaging optics.
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