Optical fiber drawing method and drawing furnace
US6735983B1 · kind B1 · utility
8Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 2001 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | May 3, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2205/80
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A fiber drawing method according to the present invention is a drawing method of optical fiber for drawing an optical fiber 14 from one end of a fiber preform 13 by softening with heat, wherein the fiber preform 13 is set in a semi-closed space 10, 20 opening in part at a lower end in a fiber drawing furnace, the fiber preform 13 is heated by a heater 15 disposed on the lower end side of this semi-closed space 10, 20, and fiber drawing is carried out with adjusting a quantity of heat dissipation from the upper portion 20 of this semi-closed space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.