公开(公告)号：AT356416B

公开(公告)日：1980-04-25

申请号：AT519578

申请日：1978-07-18

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： COCITO GIUSEPPE ,  MICHETTI LEONARDO

IPC: G02B5/16

公开(公告)号：ATA519578A

公开(公告)日：1979-09-15

申请号：AT519578

申请日：1978-07-18

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： MICHETTI LEONARDO ,  COCITO GIUSEPPE

IPC: G02B5/16

公开(公告)号：FR2410291A1

公开(公告)日：1979-06-22

申请号：FR7832121

申请日：1978-11-14

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： COCITO GIUSEPPE

IPC: C03C21/00 ,  C03B19/01 ,  C03B37/012 ,  C03B37/014 ,  C03C3/06 ,  G02B6/00 ,  G02B6/02 ,  G02B5/14 ,  C03B37/02

Abstract: An elongate light conductor of circular or other cross-section is continuously produced by depositing, in a vacuum chamber, a powdered glassy (i.e. vitreous or vitrifiable) material upon the upper end of a descending rod of like material while training a stream of doping ions upon the same end. Vitrification may be assisted by an electron beam, also trained upon the powder-receiving rod end, and/or by thermal treatment of the rod leaving the vacuum chamber. The lower end of the rod is softened in a furnace from which a vitreous strand of reduced cross-section is continuously drawn through an orifice and wound upon a mandrel.