PRODUCTION OF QUARTZ GLASS HAVING HIGH OH GROUP CONTENT

Title:

PRODUCTION OF QUARTZ GLASS HAVING HIGH OH GROUP CONTENT

Document Type and Number:

Japanese Patent JPH04349129

Kind Code:

A

Abstract:

PURPOSE: To obtain SiO2 glass having a high OH group content and fit for transmission in a UV region.

CONSTITUTION: A plasma flame 4 is generated with a plasma generator 3 in a steam atmosphere and an Si compd. such as SiCl4 and O2 are fed into the plasma flame 4 from a pipe 5 and brought into a thermal oxidation reaction in the steam atmosphere to form transparent SiO2 glass contg. many OH groups. This glass is deposited on the tip of a starting member 2 to produce a preform 8 made of SiO2 glass having such a high OH group content as about. 800-1,000ppm.

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Inventors:

SETO KATSUYUKI
SHAMOTO NAOKI
KANEDA KEIJI
SANADA KAZUO

Application Number:

JP15088391A

Publication Date:

December 03, 1992

Filing Date:

May 28, 1991

Export Citation:

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Assignee:

FUJIKURA LTD

International Classes:

C03B8/04; C03B20/00; C03B37/014; C03B37/018; C03C3/06; G02B6/00; (IPC1-7): C03B8/04; C03B20/00; C03B37/018; C03C3/06; G02B6/00

Attorney, Agent or Firm:

Takeuchi Mamoru

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