| 摘要 |
A light projection apparatus includes a source of unpolarized light. The light passes to a first polarizing means that converts substantially all of the light incident on the polarizing means from the source into polarized light. The first polarizing means is preferably a polarizing cube beam splitter. The light passes to image means, which preferably includes a liquid crystal cell, for generating an image to be projected. A second polarizing means such as a polarizing cube beam splitter is provided optically after the image means for receiving light passing through the image means and passing a first beam having a first planar polarization and deflecting a second beam having a second planar polarization, at least one of the first and second beams providing a projected image.
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