发明名称 |
CONTROL OF TEMPERATURE DURING DEPOSITION OF GLASS BY MCVD PROCESS |
摘要 |
PURPOSE:To eliminate the variation of the distribution of refractive index and improve the yield, by controlling the heating temperature of a glass tube with a burner according to the heat accumulated in the glass tube by heating. CONSTITUTION:The burner 6 reciprocates along the length of the glass tube 1, and heats the outer circumference of the tube 1 during the rightward motion. Glass layers are deposited in layers to the inner surface of the glass tube 1 by feeding the raw material gas into the tube 1 and heating the tube 1 with the burner to effect the reaction and decomposition of the raw material gas. In the above process, the fire of the burner 6 is intensified during the motion from the F point to the B point to heat the glass tube 1, and is weakened during the motion from B to F to cause the spontaneous cooling of the tube 1. The surface temperature of the glass tube 1 is detected by the temperature detector 11 moving integrally with the burner 6, and the heating temperature of the burner 6 is controlled according to the detected temperature. |
申请公布号 |
JPS57200235(A) |
申请公布日期 |
1982.12.08 |
申请号 |
JP19810085353 |
申请日期 |
1981.06.03 |
申请人 |
NIPPON DENSHIN DENWA KOSHA;FURUKAWA DENKI KOGYO KK |
发明人 |
SENDA KAZUNORI;SATOU HIROMITSU;SUGIHARA MASATOSHI;YUSA HIDETOSHI |
分类号 |
C03B8/04;C03B37/018;G02B6/00 |
主分类号 |
C03B8/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|