BURNER FOR FORMING FINE POWDER OF OPTICAL GLASS

• Main Authors: MATSUMOTO HISASHI, MATSUBARA KUNIHIRO, FURUI YASUROU, KAMIKURA YASUHIRO
• Format: Patent
• Language: English
• Published: 22.07.1985
• Subjects: CHEMISTRY; GLASS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

PURPOSE:To titled burner providing glass fiber having smooth distribution of refraction free from disturbance, by setting a hood at the outside of the tip of the burner, laying a protection member to protect flame from air flow in a reactor at the outside of the hood. CONSTITUTION:In the burner 3 wherein the fine powder 4 of optical glass prepared by the chemical reaction of vapor-phase raw material through oxyhydrogen flame is piled on the powder deposit position 12 in the reactor 1 equipped with the exhaust vent 5, the hood 6 to regulate the extent of flame is set at the outer periphery of the tip of the burner 3, and the protection member 7 to protect flame from air flow in the reactor 1 is laid at the outside of the hood. The hood 6 and the protection member 7 are cylindrical, and the protection member 7 is attached through the spacer 8 to the hood 6. Since flame of the burner is stabilized, optical fiber having smooth distribution of refraction free from disturbance is obtained in good reproducibility.