Title:
METHOD AND APPARATUS FOR PRODUCING POROUS GLASS PREFORM
Document Type and Number:
Japanese Patent JP3730448
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for producing a porous glass preform in high productivity so as to be uniform in deposition in the longitudinal direction.
SOLUTION: This method for producing a porous glass preform comprises depositing glass microparticles on a starting preform using a plurality of burners set up in a transverse row and subject to reciprocating movement in the longitudinal direction; wherein the burner row is set up on a 1st movement shaft and subjected to reciprocating movement, the 1st movement shaft is then set up on a 2nd movement shaft and the burner row is subjected to reciprocating movement similarly, thereby the turning back position of the reciprocating movement of the burner row is shifted; and the reciprocating movement width along at least one of the 1st and 2nd movement shafts is made to stand at a multiple of the interval between the adjacent burners set up above in a row.
Inventors:
Yuji Tobisaka
Hiroshi Tsumura
Tadakatsu Shimada
Hideo Hirasawa
Hiroshi Tsumura
Tadakatsu Shimada
Hideo Hirasawa
Application Number:
JP20703999A
Publication Date:
January 05, 2006
Filing Date:
July 22, 1999
Export Citation:
Assignee:
Shin-Etsu Chemical Co., Ltd.
International Classes:
C03B8/04; C03B37/018; G02B6/00; (IPC1-7): C03B8/04; C03B37/018; G02B6/00
Domestic Patent References:
| JP3228845A | ||||
| JP64009821A | ||||
| JP5058652A |
Attorney, Agent or Firm:
Mikio Yoshimiya
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