Optical element
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United States of America Patent
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Aug 10, 2004
Grant Date -
N/A
app pub date -
Dec 11, 2001
filing date -
May 18, 2000
priority date (Note) -
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Abstract
An optical element in which a hard coat layer is formed on an organic glass base material surface via a primer layer. For a primer composition forming a primer layer, whole or the main body of the primer layer formation polymer is made as being ester based TPE. Moreover, a hard coat composition forming a hard coat layer is consisted of a hydrolysate of alkoxysilane in which trialkoxysilane containing monoexpoxy organic group is the main body as a matrix formation ingredient, and the titanium based metal oxide complex particle as being an optical interference control agent, the foregoing titanium based metal oxide complex particle is consisted of T.sub.1 O.sub.2 as the main body, SiO.sub.2 as a major sub-ingredient, and further, ZrO.sub.2 and K.sub.2 O as a trace sub-ingredient. An optical element of the present invention is capable of suppressing optical interference even if it is a high refractive index base material and the stability of coated film portion is also excellent as well as has a variety of properties comparable to the conventional optical parts.
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