Apparatus and method for producing high-purity sulphur glass

A technology of chalcogenide glass and preparation device, applied in glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., can solve the problems of unpublished data, increase light scattering loss, reduce glass transmittance, etc., and achieve infrared transmittance Good, uniform optical quality
CN101492235AActive Publication Date: 2009-07-29NINGBO UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NINGBO UNIV
Publication Date
2009-07-29

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Abstract

The invention discloses a device for preparing high-purity chalcogenide glass, which is characterized by comprising a swaying furnace body with the function of swaying backwards and forwards and a quartz ampoule, wherein the swaying furnace body is provided with a first hearth and a second hearth which are provided with an independent temperature control and heating system respectively and are communicated with each other through a transition area; the quartz ampoule comprises a glass raw material tube and a purification glass tube which are communicated with each other through a connecting tube; the glass raw material tube is arranged in the first hearth; the purification glass tube is arranged in the second hearth; and the connecting tube is positioned in the transition area. The device has the advantages that one quartz ampoule provided with the glass raw material tube and the purification glass tube is arranged on the device, the glass raw material tube and the purification glass tube are placed in two hearths with different temperatures respectively, the temperature difference between the two hearths is controlled to realize the purification of glass so that the high-purity chalcogenide glass with even optical quality and good infrared light transmittance can be obtained.
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Description

technical field

[0001] The invention relates to the preparation of chalcogenide glass, in particular to a preparation device and method for high-purity chalcogenide glass. Background technique

[0002] Chalcogenide glass is a non-oxide glass with a wide infrared transmission region (>15μm). In recent years, selenide and selenium-antimony-germanium chalcogenide glasses have been commercially used, especially in thermal imaging infrared lens materials. It is regarded as an excellent infrared material that can replace traditional germanium single crystals.

[0003] However, the infrared transmittance of existing chalcogenide glass is affected by impurities in the glass, and there are oxide absorption bands of various chalcogenide glass elements above 8 μm, and these oxide absorption bands affect the far-infrared region of 8-12 μm The biggest problem with transmittance. The impurities in the glass mainly come from raw materials, raw material surfaces, quartz ampoule and sea...

Claims

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