Appeal No. 2003-1551
Application No. 09/550,713
The disclosed invention pertains to a method and
apparatus for use in a projection-display system.
Representative claim 1 is reproduced as follows:
1. In a projection-display system for receiving a first
light beam embodying a first image from a video device and for
enlarging said image to a second image to be embodied in a second
light beam adapted for projection onto a screen, said system
comprising:
a polarized beam splitter (PBS) for separating the first
light beam into a reflected S polarized light wave and a
transmitted P polarized light wave;
a delay means for creating a half wavelength delay between
the reflected S polarized light wave and the transmitted P
polarized light wave;
a direction-modifying means for changing the direction of
the transmitted P polarized light wave in such manner that it
becomes parallel to, and travel in the same direction as, the
reflected S polarized light wave; and
a condenser for condensing the reflected S polarized light
wave and the transmitted P polarized light wave;
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