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Anti-halation glass with high cathode sensitivity and preparation method and application thereof

A sensitivity and anti-light technology, which is applied in the direction of cathode ray/electron beam tube shell/container, etc., can solve the problems that cannot meet the requirements of cathode sensitivity, reduce the central transmittance of the anti-halation input window, and the average value of cathode sensitivity is small. , to achieve excellent stray light elimination performance, excellent high cathode sensitivity performance, and the effect of making materials environmentally friendly

Active Publication Date: 2021-07-20
中建材光子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current anti-halation input window glass can achieve the effect of eliminating stray light, the anti-halation input window glass can produce a large number of color centers or ions that can be reduced and have a high concentration. These ions are easy to react with the multi-alkali photocathode. The poisoning effect will cause the central transmittance of the anti-halation input window to decrease, and the average value of the cathode sensitivity is small, usually below 800μA / lm, which cannot meet the requirements of optical instruments for the cathode sensitivity of the anti-halation input window

Method used

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  • Anti-halation glass with high cathode sensitivity and preparation method and application thereof
  • Anti-halation glass with high cathode sensitivity and preparation method and application thereof
  • Anti-halation glass with high cathode sensitivity and preparation method and application thereof

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preparation example Construction

[0053] The preparation method of the anti-halation glass with high cathode sensitivity comprises the following steps:

[0054] Mix the raw materials according to the formula of the glass component to obtain the first mixture; add clarifier to the first mixture and mix thoroughly to obtain the second mixture; melt the second mixture, mechanically stir, and cool down The anti-halation glass can be obtained by clarifying, leaking or pressing.

[0055] During specific implementation, the raw materials include quartz sand, boric acid, sodium carbonate, sodium nitrate, potassium carbonate, potassium nitrate, lithium carbonate, lithium oxide, barium nitrate, barium carbonate, calcium carbonate, aluminum hydroxide, aluminum oxide and bismuth. The raw material also includes basic magnesium carbonate.

[0056] During specific implementation, the clarifying agent is environment-friendly Sb 2 o 3 And / or NaCl; Preferably, the weight of the clarifying agent accounts for 0.10-0.50% of th...

Embodiment 1

[0059] This embodiment provides an anti-halation glass with high cathode sensitivity and a preparation method thereof.

[0060] The components of the anti-halation glass in this embodiment, the weight percentages of each component and the physical properties of the prepared glass are shown in Table 1.

[0061] The preparation method of anti-halation glass in the present embodiment is: with quartz sand, boric acid, sodium carbonate, sodium nitrate, potassium carbonate, potassium nitrate, lithium carbonate, lithium oxide, barium nitrate, barium carbonate, basic magnesium carbonate, calcium carbonate , aluminum hydroxide, aluminum oxide, and bismuth trioxide are mixed as raw materials, adding clarifier Sb accounting for 0.5% of the total weight of the anti-halation glass 2 o 3 and / or NaCl (when clarifier is Sb 2 o 3 and NaCl, the weight ratio of the two is 1:1), and then melted at 1500°C for 20 hours, mechanically stirred (15r / min, 30h), cooled to 1100°C after 6 minutes, and t...

Embodiment 2

[0063] This embodiment provides an anti-halation glass with high cathode sensitivity and a preparation method thereof.

[0064] The components of the anti-halation glass in this embodiment, the weight percentages of each component and the physical properties of the prepared glass are shown in Table 1.

[0065] In the preparation method of anti-halation glass in the present embodiment, clarifying agent is Sb 2 o 3 and / or NaCl (when clarifier is Sb 2 o 3 and NaCl, the weight ratio of the two is 1:1), and its addition is 0.2% of the total weight of the anti-halation glass; the melting temperature is 1600°C; the molding temperature is 1200°C, and other preparation steps and parameters are the same as Embodiment 1 is the same; in this embodiment, the glass wool blank can be a round rod (glass rod). In addition, according to actual needs, it can also be formed into strips, plates and other forms.

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Abstract

The present invention relates to an anti-halation glass with high cathode sensitivity and its preparation method and application. The anti-halation glass with high cathode sensitivity comprises the following components by weight percentage: SiO 2 , 61‑67%; B 2 o 3 , 9‑16%; Al 2 o 3 , 5.5‑10%; the first component, 7‑8.8%; the second component, 5.4‑6.9%; Bi 2 o 3 , 0.1-0.5%; mix the raw materials according to the formula amount to obtain the first mixture; add clarifier to the first mixture and mix to obtain the second mixture; melt the second mixture and mechanically stir , cooling clarification, leakage system or pressing molding. The anti-halation glass of the invention has high optical transmission performance, excellent stray light elimination performance and high cathode sensitivity performance at the same time, and is more suitable for practical application.

Description

technical field [0001] The invention relates to an optical glass material, in particular to an anti-halation glass with high cathode sensitivity and its preparation method and application. Background technique [0002] As a kind of special optical material, anti-halation glass is usually used in the low-light night vision field. The anti-halation glass input window is made into a stepped glass with different diameters on both sides in the low-light image intensifier, and the middle is transparent. Glass, surrounded by a layer of black opaque glass, the surface of the small surface is coated with photocathode, and the edge of the large surface is sealed with indium of the tube shell of the image intensifier. Anti-halation glass needs to have two basic functions: 1. The black glass layer on the peripheral surface is used to eliminate stray light, and the extinction performance is better; 2. The facet surface of the glass is in direct contact with the multi-alkali photocathode ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/091C03C6/04C03C6/06C03C1/00C03C4/00H01J29/89
CPCC03C1/00C03C1/004C03C3/091C03C4/0092H01J29/89
Inventor 曹振博贾金升吕学良孙勇李开宇李自金孔壮周东站洪升郑京明
Owner 中建材光子科技有限公司
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