Wavelength filter, variable wavelength filter, and optical device
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United States of America Patent
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N/A
Issued Date -
Jan 29, 2004
app pub date -
Jul 14, 2003
filing date -
Jul 24, 2002
priority date (Note) -
Abandoned
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Abstract
A wavelength filter includes lattice structures that are arranged at predetermined intervals in the direction of an optical axis. Each of the lattice structures has regions of two different refractive indices that are alternately arranged.
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