Optical device
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United States of America Patent
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-
Feb 21, 1995
Grant Date -
N/A
app pub date -
Mar 22, 1993
filing date -
Mar 31, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An optical device is composed of: a transparent base plate formed of a glass or a macromolecular resin; a first layer formed of a substance having a refractive index of 1.58 or higher; and a second layer formed of an amorphous transparent fluorocarbon resin having a refractive index of 1.35 or lower. The second layer is farther from the transparent base plate than the first layer from the transparent base plate. The first and second layer constitute a film for preventing reflection. Optionally, adhesive layers are provided between the transparent base plate and the first layer and between the first layer and the second layer. Further optionally, the surfaces of the transparent base plate and the first layer are treated in order to enhance adhesion between the contact surfaces.
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