Polarizer having a glass substrate with films on either side with different wavelength characteristics and projection display using same

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United States of America Patent

PATENT NO 5579138
SERIAL NO

08218957

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Abstract

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A polarization separation mirror is made by evaporation-depositing a first multi-layers thin film and a second multi-layers thin film respectively on both surfaces of a transparent substrate, the mirror acts as a polarization beam splitter by cementing it between two transparent prism bodies. By shifting the relative film thicknesses of the first multi-layers thin film and of the second multi-layers thin film, reflecting wavelength range for the S-polarization component is changed.

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Patent Owner(s)

Patent OwnerAddress
MATSUSHITA ELECTRIC INDUSTRIAL CO LTDJAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyatake, Yoshito Neyagawa, JP 49 1077
Sannohe, Shinya Neyagawa, JP 22 552

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