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A kind of holographic imaging glass composition, glass substrate and preparation method

A glass composition and holographic imaging technology, applied in the field of holographic imaging, can solve the problems of difficult molding, low glass viscosity, cumbersome production process, etc.

Active Publication Date: 2022-03-15
株洲醴陵旗滨玻璃有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the low viscosity of the glass in the molding process of the existing holographic imaging glass substrate, the molding is difficult, there is serious crystallization, the production cost is high, and the production process is cumbersome and low in efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] In the preparation method of the holographic imaging glass substrate of the present invention, the raw materials are mixed and melted according to the mass percentage of each component of the holographic imaging glass composition to obtain a glass melt, and the glass melt is clarified, homogenized, formed and annealed , to obtain a holographic imaging glass substrate.

[0034] A method for preparing a holographic imaging glass substrate in a specific embodiment is as follows: the raw material components are sent into a melting furnace for melting reaction, the melting temperature is 1450-1580°C, the clarification temperature is 1400°C-1450°C, cooled by the cooling part and then passed through the flow The channel is fed into the tin bath for molding. The temperature of the tin liquid is 590-790°C, and the temperature of the tin bath space is 570-950°C. The glass is processed into the required thickness and width by reducing the lateral temperature difference of the glas...

Embodiment 1

Proportion wt% 60 5 8 3 10 2 2 10

[0038] Note: Ln 2 o 3 for la 2 o 3 +Y 2 o 3 +Gd 2 o 3 total amount.

[0039] Preparation method: After the raw materials enter the melting furnace, they are melted and reacted at 1540-1560 °C, clarified at 1435-1445 °C, enter the tin tank through the cooling part, and draw at a speed of 740-760m / h. Annealing in an annealing kiln. After annealing at 510-530°C, 440-480°C, and 280-300°C, an imaging glass substrate with a thickness of 4.5 mm can be obtained by cutting.

[0040] After testing, the imaging glass substrate product has the following properties:

[0041] Optical properties: transmittance: 88%, dispersion coefficient (Abbe number) 64.06;

[0042] Internal properties: density 2.8t / m 3 , no streaks, bubbles, impurities, etc.;

[0043] Mechanical strength: pressure resistance, flexural resistance, tensile resistance, impact resistance;

[0044] Chemical stability: moisture resistance, corrosion resistance, ...

Embodiment 2

Proportion wt% 50 8 8 4 12 3 5 10

[0050] The preparation method is the same as in Example 1.

[0051] After testing, the imaging glass substrate product has the following properties:

[0052] Optical properties: transmittance: 85%, dispersion coefficient (Abbe number) 62.70;

[0053] Internal properties: density 2.7t / m 3 , no streaks, bubbles, impurities, etc.;

[0054] Mechanical strength: pressure resistance, flexural resistance, tensile resistance, impact resistance;

[0055] Chemical stability: moisture resistance, corrosion resistance, acid resistance, alkali resistance;

[0056] Thermal stability: coefficient of thermal expansion (80~100)×10 -7 / °C.

[0057] Viscosity: 390Pa·s (1100°C), crystallization temperature upper limit 1090°C.

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PUM

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Abstract

The invention discloses a holographic imaging glass composition, a glass substrate and a preparation method. The glass composition comprises the following components by mass percentage: SiO 2 : 50~60%; Al 2 O 3 : 3~8%; CaO: 5~8%; MgO: 1~5%; Na 2 O: 10~15%; K 2 O: 1~3%; B 2 O 3 : 0~5%; rare earth metal oxide: 1~10%; the rare earth metal oxide is selected from La 2 O 3 , Y 2 O 3 or Gd 2 O 3 At least one of the raw materials is mixed and melted to obtain a glass melt, and the glass melt is clarified, homogenized, shaped and annealed to obtain a holographic imaging glass substrate. The imaging glass substrate produced by the invention has the characteristics of moderate viscosity, obvious reduction of crystallization phenomenon, low thermoforming difficulty and the like.

Description

technical field [0001] The invention belongs to the field of holographic imaging, and in particular relates to a holographic imaging glass composition, a glass substrate and a preparation method. Background technique [0002] Holographic technology is a technology that uses the principles of interference and diffraction to record and reproduce the real three-dimensional image of an object. Holography uses a laser as an illumination source, and divides the light emitted by the light source into two beams, one beam is directly directed to the photosensitive sheet, and the other beam is reflected by the subject and then directed to the photosensitive sheet. The two beams of light are superimposed on the photosensitive sheet to produce interference, and finally the hologram reproduced by the basic principle of digital image is used for further processing to remove the digital interference and obtain a clear holographic image. [0003] The development of holographic imaging tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/095G03H1/00
CPCC03C3/095G03H1/0005
Inventor 陈立新希日莫杜川刘钦赵德伟王巍吴生鸿陈民生周昌文
Owner 株洲醴陵旗滨玻璃有限公司