Environmentally friendly low-dispersion chalcogenide glass and preparation method thereof

A technology of chalcogenide glass and low dispersion, which is applied in the field of environment-friendly low dispersion chalcogenide glass and its preparation, can solve the problems of easy photodarkening, photobleaching effect, poor optical stability, etc., and achieve good infrared transmission performance, Uniform optical quality and good infrared light transmittance

Inactive Publication Date: 2015-08-19
宁波鼎创红外精密光学科技有限公司
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AI Technical Summary

Problems solved by technology

[0003] To prepare chalcogenide glass with low dispersion properties, the traditional method is to add As to this typ

Method used

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  • Environmentally friendly low-dispersion chalcogenide glass and preparation method thereof

Examples

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Example Embodiment

[0022] The preparation of the chalcogenide glass of Examples 1-5, taking Example 1 as an example, includes the following steps:

[0023] 1) Pretreatment: Prepare a swing furnace body and quartz ampoule with a front and back swing function. The swing furnace body is provided with a first furnace and a second furnace. The first and second furnaces have independent temperature control and heating systems. The first furnace and the second furnace are connected to each other through the filter area. The quartz ampoule includes a glass raw material tube and a purified glass tube. The glass raw material tube and the purified glass tube are connected to each other through a connecting tube; each component of the chalcogenide glass is carried out according to the mass percentage in Table 1. Weigh and put it into the glass raw material tube. At the same time, put a magnesium bar of 0.03wt%-0.07wt% of the total chalcogenide glass raw material in the glass raw material tube as an oxygen scave...

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Abstract

The invention discloses an environmentally friendly low-dispersion chalcogenide glass and a preparation method thereof. The chalcogenide glass comprises, by mass, 14-18% of Ge, 7-28% of Sb, 57-70% of Se, and 0-5% of Te. Composition components of the chalcogenide glass do not contain As, the Abbe number of the chalcogenide glass disclosed in the invention is higher than the Abbe number of As-containing chalcogenide glass Ge22As20Se58 of 119.55, the Abbe number of commercial Ge20 (Ge20Sb15Se65) of 100.58 and the Abbe number of commercial Ge28 (Ge28Sb12Se60) of 102.15, and the V8-12 of the chalcogenide glass is the ratio of (n10-1)/(n8-n12) and is 120-130; and the chalcogenide glass has a good infrared transmittance performance, can be stably produced in batches, and can be used in infrared night vision lenses. The preparation method of the environmentally friendly low-dispersion chalcogenide glass is characterized in that a glass raw material tube and a purified glass tube are respectively placed in two hearths with different temperatures, and glass is purified by controlling a temperature difference between the two hearths, so the highly pure chalcogenide glass with uniform optical quality and good infrared light transmittance is obtained.

Description

technical field [0001] The present invention relates to chalcogenide glass and its preparation, in particular to an environment-friendly low-dispersion chalcogenide glass and its preparation method. The Abbe number (V 8-12 =(n 10 -1) / (n 8 -n 12 )) Between 120-130, can be used for infrared night vision lens. Background technique [0002] With the rapid development of the automobile market and the increasing awareness of security, people have higher and higher requirements for automobile safety technology. The night vision system can help the driver navigate in the dark, so that the driver can see the driving environment clearly in both light and dark situations. As the environmentally friendly chalcogenide glass used in its optical system, it not only needs to meet the design requirements of high-performance vehicle-mounted night vision system lenses, but also requires glass lenses to have lower dispersion to reduce chromatic aberration and improve imaging quality. There...

Claims

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Application Information

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IPC IPC(8): C03C3/32C03C4/00
Inventor 戴世勋许银生林常规张国伟范玉峰
Owner 宁波鼎创红外精密光学科技有限公司
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