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Patent Searching and Data


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.


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