Stray light absorbing glass for optical fiber image inverter and preparation method of stray light absorbing glass

Abstract

The invention discloses stray light absorbing glass for an optical fiber image inverter and a preparation method of the stray light absorbing glass. The stray light absorbing glass for an optical fiber image inverter is prepared from the raw materials: boric acid, quartz sand, aluminum hydroxide, potassium carbonate, sodium carbonate, calcium carbonate, lithium carbonate, titanium dioxide, ferricoxide, cobalt oxide, nickel sesquioxide, manganese dioxide, sodium sulfate and arsenic trioxide. A preparation method of the stray light absorbing glass for the optical fiber image inverter is also disclosed. The black absorbing glass which can be applied to the optical fiber image inverter has a spectral transmittance of 5-10% at wavelengths of 350-900 nm under the control condition of a thickness of 1.00+ / -0.01 mm, meanwhile, the smelt glass has no stone, and the glass has high glossiness; and meanwhile the glass has a softening temperature range of 620-750 DEG C, the crystallization lower-limit temperature is >= 850 DEG C, and the glass has high anti-crystallization ability and good chemical stability, and can meet the requirements of the optical fiber inverter for the process performance of the black absorbing glass.

Description

technical field [0001] The invention relates to a glass material, in particular to a stray light absorbing glass for an optical fiber image inverter and a preparation method thereof. Background technique [0002] The fiber optic inverter is made of thousands of optical fibers regularly arranged, heated, pressurized, fused, and twisted. Each fiber in the fiber optic inverter is composed of high-refractive-index core glass and low-refractive-index cladding glass, and the optical fiber is unidirectionally transmitted according to the principle of optical total reflection. [0003] In order to improve the resolution of the fiber optic inverter, the raw materials used in the manufacturing process of the fiber optic inverter are not only the core glass and the cladding glass, but also insert black absorbing glass filaments. This is because there is light penetration between the fiber core and the cladding glass, as well as light leakage and light crossing caused by defects betwee...

AI Technical Summary

Problems solved by technology

In view of the special manufacturing process and technical requirements of the fiber optic inverter, after ordinary absorbing glass filaments are inserted into the fiber optic inverter, the diameter of a single absorbing filament is on the order of microns, so it cannot effectively absorb stray light at all.

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