A kind of chalcogenide optical glass and its preparation method and optical element

An optical glass and chalcogenide technology, which is applied to optical components, glass manufacturing equipment, glass furnace equipment, etc., can solve the problem of not disclosing the infrared transmittance glass transition temperature of chalcogenide glass, and achieve the effect of increasing the glass transition temperature.

Active Publication Date: 2021-04-02
HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it focuses on the nonlinear refractive index of the chalcogenide glass, and does not disclose the infrared transmittance and glass transition temperature of the chalcogenide glass in the 2-16μm band

Method used

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  • A kind of chalcogenide optical glass and its preparation method and optical element
  • A kind of chalcogenide optical glass and its preparation method and optical element

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preparation example Construction

[0045] The present invention provides a method for preparing chalcogenide optical glass according to the present invention, comprising the following steps:

[0046] 1) Ingredients and vacuum sealing: Weigh raw materials with a purity ≥ 99.999% according to the specified ratio of raw materials, and then seal the mixture in a vacuum of 10 -5 In a closed container below Pa;

[0047] 2) Melting and quenching of the mixture: place the packaged airtight container in a swing furnace for high-temperature melting, the melting temperature is 850-1100°C, and the melting time is 10-20 hours. The whole melting process is shaken to ensure that all raw materials are mixed. Evenly, when the melting temperature drops to 400-700°C, take out the airtight container and water-cool it to solidify, and form a glass semi-finished product in the airtight container;

[0048] 3) Annealing: Put the airtight container with glass semi-finished products into the annealing furnace. Remove from airtight con...

Embodiment 1～4

[0053] 1) Ingredients and vacuum sealing: according to the ratio of raw materials in Examples 1 to 4 in Table 1, take Ge, Se and Te raw materials with purity ≥ 99.999%, put them into ampoules, and evacuate to 10 -5 Pa, adopt hydrogen oxyflame to seal and airtight the ampoule bottle that compound material is housed;

[0054] 2) Melting and quenching of the mixture: Place the packaged ampoules in a swing furnace for high-temperature melting. The melting temperature is 900°C, and the melting time is 15 hours. The whole melting process is shaken to ensure that the mixture is evenly mixed. Lower to 600°C, take out the ampoule bottle and put it in water to cool and solidify, and the glass semi-finished product will be formed in the ampoule bottle;

[0055] 3) Annealing: put the ampoule containing the glass semi-finished product into the annealing furnace, the annealing temperature is 170°C, the annealing cooling rate is -10°C / h, after the temperature drops to room temperature, take ...

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Abstract

The invention provides a chalcogenide optical glass and a preparation method thereof, and an optical element. The chalcogenide optical glass contains, by the molar percentage, 21-30% of Ge, 11-20% ofSe, and 58-68% of Te; and the chalcogenide optical glass does not contain As. The chalcogenide optical glass has a refractive index of 2.8-3.8 at a wave band of 10.6 [mu]m, has good infrared transmission performance at a wave band of 2-16 [mu]m and a glass transition temperature of 153-190 DEG C, and is quite suitable for needs of precise mould pressing and film plating.

Description

technical field [0001] The invention relates to a chalcogenide optical glass, a preparation method thereof and an optical element, belonging to the technical field of infrared optical glass. Background technique [0002] At present, there are three main systems of chalcogenide glass that are widely used at home and abroad, namely As-Se, Ge-As-Se, Ge-Sb-Se, among which As is the highest refractive index. 40 Se 60 Far-infrared glass, with a refractive index of 2.7 at a wavelength of 10.6 μm, is currently the most demanded chalcogenide glass in the market and is favored by many optical designers. [0003] However, with the continuous expansion of the infrared market, many designers have put forward higher technical requirements for chalcogenide glass. They need a new glass with good glass transition temperature and high refractive index, which can meet the requirements of coating temperature and precision molding process. Material. Moreover, in recent years, the world has at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/32C03B5/235C03B25/00G02B1/00
CPCC03B5/235C03B25/00C03C3/321G02B1/00
Inventor 唐博博徐华峰黄国雅高晓芳赵仲勋何蓉胡向平
Owner HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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