Importance

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Abstract

A projection system for alternately outputting different polarized image light sources includes a polarizing beam splitting module, an image display module and a light polarization switch module. The polarizing beam splitting module has at least one polarizing beam splitting element for intermittently receiving a plurality of input light sources according to different time sequences. The image display module has at least one reflective image display panel disposed beside a first side of the polarizing beam splitting element. The light polarization switch module has at least one transmission LCD light valve disposed beside a second side of the polarizing beam splitting element. Therefore, the image light sources with P polarization and the image light sources with S polarization can be intermittently and alternatively projected from the projection lens onto the surface of the object by switching the transmission LCD light valve to ON/OFF state according to different time sequences.

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First Claim