C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
32/23, 117/85
C03B 8/04 (2006.01) C03B 37/014 (2006.01) C03B 37/018 (2006.01)
Patent
CA 1248415
TITLE OF THE INVENTION METHOD OF FABRICATING OPTICAL GLASS BASE MATERIAL AND APPARATUS FOR FABRICATING THE SAME ABSTRACT OF THE DISCLOSURE A method of fabricating an optical glass base material by injecting and depositing glass fine particles. produced by chemically reacting glass stock which comprises means for growing the glass fine particles in a depositing direction to form porous rod-shaped base material, support means for supporting the porous rod-shaped base material after growing, and heat treatment means for sintering at least the outer periphery of the rod-shaped base material in semisintering state before supporting the rod-shaped base material by said support means to harden the same. Thus, since the rod-shaped base material is held in the stable state through the support means, the base material is strengthened in the mechanical strength by the semisintering hardening through the heat treating means before supported by the support means, the base material is not deformed nor damaged in the supported state, and the large base material may be fabricated. - 1 -
461378
Hara Ryoichi
Inagaki Nobuo
Kuroha Toshiaki
Nippon Telegraph And Telephone Corporation
Ridout & Maybee Llp
The Furukawa Electric Co. Ltd.
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