Mirror and projection type display apparatus
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United States of America Patent
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-
Jun 19, 2001
Grant Date -
N/A
app pub date -
Feb 27, 1998
filing date -
Feb 28, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mirror comprises a transparent glass substrate and a dielectric multilayer film laminated on one surface (entrance surface) of the glass substrate. The dielectric multilayer film is formed by layers made of a high refractive index material and layers made of a low refractive index material which are alternately laminated, and is applied to a projection type display apparatus. The material and thickness of each layer are set so as to yield a polarization characteristic for causing reflected light to approach linearly polarized light.
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