Crystallized glass and method for manufacturing same

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United States of America Patent

PATENT NO 9611170
APP PUB NO 20150376052A1
SERIAL NO

14763178

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Abstract

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What is achieved is an optical wavelength multiplexer/demultiplexer not necessarily requiring the function of adjusting the optical path. A value (ΔLmax−ΔLmin)/L obtained by dividing a difference between a maximum value ΔLmax and a minimum value ΔLmin of ΔL in a range of −40° C. to 80° C. by L is 8×10−6 or less where L represents a length of a crystallized glass (1) at 30° C. and ΔL represents a difference between a length (Lt) of the crystallized glass (1) at each of the temperatures and the length (L) thereof at 30° C.

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Patent Owner(s)

  • NIPPON ELECTRIC GLASS CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Funabiki, Nobuo Otsu, JP 12 47
Kobayashi, Masahiro Otsu, JP 425 3870
Ogawa, Shuhei Otsu, JP 42 136
Takeuchi, Hirokazu Otsu, JP 53 527

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