METHOD AND CYLINDRICAL SEMI-FINISHED PRODUCT FOR PRODUCING AN OPTICAL COMPONENT
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United States of America Patent
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Issued Date -
Oct 6, 2011
app pub date -
Oct 29, 2009
filing date -
Nov 6, 2008
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Abandoned
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Abstract
soot layer from the outside to the inside. In order to achieve dimensionally accurate and low-deformation production as well as high cost efficiency based on said known method, it is proposed that the sintering treatment be interrupted before the sintering zone reaches the outer wall of the inner cylinder so that an intermediate layer made of synthetic quartz glass containing pores remains at the inner cylinder outer wall. The semi-finished product obtained in such a way is elongated into the optical component, wherein the intermediate layer sinters completely into transparent quartz glass.
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