Method for drawing grin lens fiber

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United States of America Patent

PATENT NO 9422186
APP PUB NO 20120017644A1
SERIAL NO

13257410

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Abstract

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When drawing of a GRIN lens from a preform is started, wastage of the preform is reduced and the amount of time taken from the start of elongation of the preform to the start of winding is reduced. A preform, to a lower end of which a weight formed of silica is fused, is set in a heating furnace, and drawing of the preform is started by heating a fused portion where the preform and the weight are fused to each other. This can reduce wastage of the preform. Since an elongation speed of the preform is increased by the weight of the weight, the amount of time taken from the start of the elongation of the preform to the start of winding can be decreased.

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Patent Owner(s)

Patent OwnerAddress
TOYO SEIKAN GROUP HOLDINGS LTDTOKYO JAPAN TOKYO METROPOLIS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuda, Toshiaki Kanagawa, JP 7 41

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