Light beam polarization converter for converting an illumination light source
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United States of America Patent
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Jul 1, 2003
Grant Date -
Aug 8, 2002
app pub date -
Jan 19, 2001
filing date -
Dec 1, 2000
priority date (Note) -
Expired
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Abstract
A light beam polarization converter converts non-polarized light beams of an illumination source having a plurality of polarization states into a single polarization state. The light beams from the bottom converged by the lower surface of the under plate and further parallelized by the upper surface thereof enter the converter. After a series of optical processes of polarization splitting, reflection or total reflection, and phase retardation within the converter, the light beams will pass through the converter as light beams of a single polarization state.
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