发明名称 |
METHOD FOR CARRYING OUT A PCVD DEPOSITION PROCESS |
摘要 |
A method for carrying out a PCVD deposition process, said method comprising the steps of : i) providing a glass substrate tube; ii) supplying one or more glass-forming gasses to the substrate tube of step i); iii) inducing a plasma by means of microwave radiation on at least a part of the substrate tube of step ii) to induce deposition of one or more glass layers onto the interior surface of the substrate tube; wherein at least one plasma-reactive gas is supplied to the substrate tube during step iii) in one or more pulses as a function of the axial position of the plasma along the length of the substrate tube, characterized in that one single pulse is supplied of plasma-reactive gas and wherein the length and position of said pulse is selected to fall in a longitudinal position corresponding to a deposition oscillation, said deposition oscillation being a variation in the thickness or composition of the deposited glass over the length of the substrate tube. |
申请公布号 |
EP2816137(A1) |
申请公布日期 |
2014.12.24 |
申请号 |
EP20140184932 |
申请日期 |
2012.11.16 |
申请人 |
DRAKA COMTEQ B.V. |
发明人 |
MILICEVIC, IGOR;VAN STRALEN, MATTHEUS JACOBUS NICOLAAS;HARTSUIKER, JOHANNES ANTOON |
分类号 |
C23C16/04;C03B37/018;C23C16/455;C23C16/511 |
主分类号 |
C23C16/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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