Broad band wire grid polarizing beam splitter for use in the visible wavelength region
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United States of America Patent
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Jun 5, 2001
Grant Date -
N/A
app pub date -
Sep 7, 1999
filing date -
Sep 7, 1999
priority date (Note) -
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Abstract
A wire grid polarizing beam splitter has a generally parallel arrangement of thin, elongated elements which interact with electromagnetic waves of a source light beam to generally transmit or pass light of one polarization, and reflect light of the other polarization. The arrangement of elements has a throughput greater than approximately 50%, and an extinction greater than approximately 100. In addition, the arrangement of elements has a period less than approximately 0.21 .mu.m, and a width to period ratio of between approximately 0.25 to 0.76. The elements have a thickness of between approximately 0.05 to 0.5 .mu.m.
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