Polyimide coated heavy metal fluoride glass fiber and method of

Details Polyimide coated heavy metal fluoride glass fiber and method of Polyimide coated heavy metal fluoride glass fiber and method of

1996-06-20

1997-11-18

Lusignan, Michael

Coating processes

Optical element produced

Polarizer, windshield, optical fiber, projection screen, or...

65388, 65389, 65430, 385123, 4274342, B05D 506

Patent

active

056885539

ABSTRACT:
A method of making a polyimide coated heavy metal fluorinated fiber includes the steps of drawing an optical fiber through a low-temperature curing polyimide solution to form a polyimide coating which cures in a range of about 200.degree. and 390.degree. C. A low curing temperature enables a low temperature profile to be used for curing the coating. The low-temperature curing conditions provide a maximum fiber exposure temperature above the glass transition temperature of the fiber but minimize crystallization of the fiber during curing. The method is also applicable to chalcogenide fibers which carry optical signals in the infrared region.

REFERENCES:
patent: 4125644 (1978-11-01), Ketley et al.
patent: 4968116 (1990-11-01), Hulme-Lowe et al.
patent: 5366527 (1994-11-01), Amos et al.

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