Illumination optical system and projector comprising the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 6, 2007
Grant Date -
Aug 10, 2006
app pub date -
Jul 2, 2001
filing date -
Jul 5, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Brightness of optical equipment can be adjusted as required. An illumination optical system includes a light source, a lens array composed of a plurality of lenses for splitting light emitted from the light source into a plurality of sub-beams, and a polarization conversion element for adjusting the light polarization directions. The illumination optical system further includes a light shielding member between the lens array and the polarization conversion element to adjust the quantity of incident light on polarization splitting films provided in the polarization conversion element.
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