Wire grid polarizer
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United States of America Patent
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May 16, 2006
Grant Date -
Jun 16, 2005
app pub date -
Dec 2, 2004
filing date -
Dec 5, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An object is to provide a wire grid polarizer with an excellent optical property, which enables to maintain the polarization extinction ratio high and level in the broadband wavelength region with a simple structure. A wire grid polarizer of the present invention comprises, a wire grid structural body in which a plurality of metal wires are formed and arranged at a certain period in a direction orthogonal to a longitudinal direction of the metal wires on a light-transmitting substrate, for transmitting only a specific linearly polarized light out of linearly polarized lights being orthogonal to each other, which make incident to the wire grid structural body, wherein a cross-sectional shape of the metal wire, which is orthogonal to the longitudinal direction, has a taper shape.
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