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Optical glass

A technology of optical glass and glass layer, which is applied in optics, optical components, glass molding, etc. It can solve the problems that affect the production rate of optical parts, scratches on the glass surface, and impurities on the surface, so as to improve the protection effect and enhance the Corrosion resistance, uniform heating effect

Active Publication Date: 2021-04-09
HUBEI HUAXIN PHOTOELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies of the existing technology and solve the problem that optical glass is prone to scratches or impurities on the surface due to vibration or collision during transportation and storage, when performing secondary molding or precision molding, In order to remove scratches and impurities on the surface of the blank, which will greatly affect the production rate of optical parts, an optical glass proposed by the present invention

Method used

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Embodiment approach

[0031] As an embodiment of the present invention, the preparation method of the optical glass comprises the following steps:

[0032] S1: Pass silicon dioxide, lanthanum trioxide, diboron trioxide, aluminum oxide, lithium oxide and barium oxide into a hot-melt kettle for heating and melting, and control the temperature in the hot-melt kettle to rise to 1350-1550°C During the smelting process, at intervals of 0.5H, the mixed solution in the hot-melt tank was stirred for 5 minutes, and the stirring rate was controlled at 45-60r / min; on the one hand, interval stirring can effectively accelerate the melting of the molten material. At the same time, in the interval of stirring, it can be effectively stood still, so that the impurities in the raw materials can be precipitated and layered, and then a mixed solution with a lower impurity content can be obtained after the smelting is completed;

[0033] S2: Add nano-titanium dioxide and fish oil sequentially to the mixture in S1 after ...

Embodiment 1

[0048] 8-10 parts of silicon dioxide, 24-25 parts of lanthanum trioxide, 16-20 parts of diboron trioxide, 8-12 parts of nano-titanium dioxide, 5-8 parts of aluminum oxide, 1-1.6 parts of barium oxide, 2 ~4 parts fish oil;

[0049] Pass silicon dioxide, lanthanum trioxide, diboron trioxide, aluminum oxide and barium oxide into a hot-melt kettle for heating and melting, control the temperature in the hot-melt kettle to rise to 1350-1550°C, heat-preserve and melt for 2 ~3H, at intervals of 0.5H during the smelting process, stir the mixed solution in the hot-melt kettle for 5 minutes, control the stirring rate to 45-60r / min, add nano-titanium dioxide and fish oil in sequence after heat preservation and melting, and control the temperature rise in the hot-melt kettle to 1450-1600°C, and after the addition is completed, control the hot-melt tank to stir the mixed solution rapidly, control the rapid stirring rate to 80-100r / min, and the stirring time is 15-18min, and after the stirri...

Embodiment 2

[0055] The optical glass includes a glass layer and a protective layer; the protective layer is coated on the outside of the glass layer; the protective layer is made of elastic solid material; the optical glass is composed of the following raw materials:

[0056] 8-10 parts of silicon dioxide, 24-25 parts of lanthanum trioxide, 16-20 parts of diboron trioxide, 8-12 parts of nano-titanium dioxide, 5-8 parts of aluminum oxide, 5-8 parts of lithium oxide, 1 ~1.6 parts of barium oxide, 2~4 parts of fish oil, 8~6 parts of microcrystalline paraffin, 8~10 parts of low molecular weight polyethylene resin, 12~16 parts of polyamide-6, 2~3 parts of calcium oxide and 3~5 parts Thermally conductive carbon fiber;

[0057] Pass silicon dioxide, lanthanum trioxide, diboron trioxide, aluminum oxide, lithium oxide and barium oxide into a hot-melt kettle for heating and melting, and control the temperature in the hot-melt kettle to rise to 1350-1550°C. Heat preservation and smelting for 2 to 3...

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Abstract

The invention belongs to the technical field of optical glass, and particularly relates to optical glass which comprises a glass layer and a protective layer. The protective layer coats the outer side of the glass layer; the protective layer is made of an elastic solid material; the optical glass is prepared from the following raw materials: 8-10 parts of silicon dioxide, 24-25 parts of lanthanum trioxide, 16-20 parts of diboron trioxide, 8-12 parts of nano titanium dioxide, 5-8 parts of aluminum oxide, 5-8 parts of lithium oxide, 1-1.6 parts of barium oxide, 2-4 parts of fish oil, 8-6 parts of microcrystalline wax, 8-10 parts of low molecular weight polyethylene resin, 12-16 parts of polyamide-6, 2-3 parts of calcium oxide and 3-5 parts of heat-conductive carbon fibers. The optical glass is of a two layer structure and the protective layer is added to the outer layer, so that the shock resistance and the corrosion resistance of the optical glass can be effectively enhanced, and meanwhile, a cleaning process before secondary molding pressing or precise molding pressing is omitted, so that the process of preparing optical parts by precise molding pressing of the optical glass is more convenient.

Description

technical field [0001] The invention belongs to the technical field of optical glass, in particular to an optical glass. Background technique [0002] In the prior art, for optical glass, the refractive index, Abbe number, and transmittance are its core characteristics. The refractive index and Abbe number determine the basic functions of the glass. The refractive index is 1.81-1.88, and the Abbe number is 31. The optical glass of -38 belongs to high refractive index, medium and high dispersion optical glass, which can shorten the imaging length of the lens. When used in conjunction with low refractive index and low dispersion glass, it can effectively eliminate the chromatic aberration of the lens. Most of the process is prepared by secondary molding or precision molding, which makes the preparation of optical glass divided into two main steps: blanks and finished products. The process of processing blanks into finished products is accompanied by transportation and storage....

Claims

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Application Information

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IPC IPC(8): C03C3/068C03B19/02C03B25/00C03C17/00G02B1/00
CPCC03C3/068C03B19/02C03B25/00C03C17/009C03C17/007G02B1/00
Inventor 欧良明马晓梅
Owner HUBEI HUAXIN PHOTOELECTRIC CO LTD
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