Burner for producing glass fine particles and method of making g

Details Burner for producing glass fine particles and method of making g Burner for producing glass fine particles and method of making g

1988-04-20

1989-05-02

Kellogg, Arthur

Glass manufacturing

Processes

Forming product or preform from molten glass

65 182, 65 211, 65144, 239 85, 239416, C03B 37018

Patent

active

048265209

ABSTRACT:
A burner for producing glass fine particles provided with an intermediate passage between a central passage and an outer passage for surrounding the periphery of the central passage characterized by that the end of the intermediate passage is disposed inner side from the end of the outer passage and the end of the central passage is disposed between the end of the intermediate passage and the end of the outer passage. Thus, the burner can stably fabricate porous glass base material having GI type or triangular refractive index distribution and yet can suppress the production of bubbles.

REFERENCES:
patent: 4474593 (1984-10-01), Andrejco et al.
patent: 4618354 (1986-10-01), Suda et al.
H. Suda et al., "High-Rate Synthesizing Technique . . . by Vad Method", Nat'l Conf. of Semiconductor Material, Report No. 367.
H. Suda et al., "High-Rate Deposition Vad Method", Nat'l Conf. of Semiconductor Material, Report No. 1138.

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