Manufacturing method and apparatus of optical material
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United States of America Patent
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Sep 6, 2011
Grant Date -
Jun 18, 2009
app pub date -
Dec 17, 2008
filing date -
Dec 17, 2007
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Expired
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Abstract
A manufacturing method of an optical material, the method including: blending an inorganic compound (a) containing at least one of a sulfur atom and a selenium atom and a compound (b) represented by a following formula (1) in a tank, the compound (a) and the compound (b) being blended at a ratio of 1 mass % or more and 50 mass % or less of the compound (a) and 50 mass % or more and 99 mass % or less of the compound (b) relative to a total mass of a mixture of the compound (a) and the compound (b); mixing a compound (c) containing at least one thiol (SH) group; preliminarily polymerizing the compounds; cooling the compounds; and deaerating the compounds, in which a viscosity of the composition stored in the tank is controlled during at least one of the preliminarily polymerizing, the cooling and the deaerating(m represents an integer of 0 to 4, and n represents an integer of 0 to 2).
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