Process for producing a linearly-miniaturized densified optical article using a mold having an internal volume which is a homothetic copy of the optical article
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United States of America Patent
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Apr 23, 2002
Issued Date -
N/A
app pub date -
Aug 30, 2000
filing date -
Oct 6, 1994
priority date (Note) -
Expired
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Abstract
A process for producing a linearly-miniaturized, densified optical product, which entails a) cold filling a mould with a liquid colloidal dispersion formed from a chemical precursor; b) polycondensing the liquid colloidal dispersion to obtain a gel; c) supercritically drying the gel to form an amorphous aerogel having dimensions corresponding to the mould; and d) isotropically miniaturizing the amorphous monolithic aerogel obtained.
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