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Ultraviolet-transmitting optical glass

An optical glass, transmittance technology, applied in optics, optical components, instruments, etc., can solve the problems of affecting durability and poor chemical stability of glass, and achieve low transition temperature, excellent chemical stability, and high UV transmittance. Effect

Active Publication Date: 2020-12-08
CDGM OPTICAL GLASS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN106977096A discloses an optical glass with high transmittance in the ultraviolet band and resistance to ultraviolet radiation, but it contains 60-70% by mass of phosphoric acid and 13-15% of boric acid, and the chemical stability of the glass is poor. When the material is used it will affect its durability

Method used

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  • Ultraviolet-transmitting optical glass
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Examples

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Embodiment

[0086]

[0087] In the following content, the examples listed in the table will describe the present invention in more detail, and serve as a reference for others skilled in the art. It should be noted that the contents of the glass components in Examples 1-30 are expressed in mole percentages, and the protection scope of the present invention is not limited to the examples.

[0088] In this embodiment, the above-mentioned manufacturing method of ultraviolet transparent optical glass is used to obtain the glass shown in Table 1-Table 3. In addition, the properties of each glass were measured by the test method described in the present invention, and the measurement results are shown in Tables 1 to 3.

[0089] Table 1.

[0090]

[0091]

[0092] Table 2.

[0093] Example (mol%) 11 12 13 14 15 16 17 18 19 20 SiO 2

61.95 65.24 67.12 60.24 62.75 62.61 60.25 64.24 60.14 66.99 Al 2 o 3

8.51 7.06 2.41 4.40 5.14 6.54 8....

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PUM

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Abstract

The invention provides ultraviolet-transmitting optical glass which comprises the following components in percentage by mole: 55-75% of SiO2; 1-10% of Al2O3; 5-20% of B2O3; and 5-30% of Li2O + Na2O +K2O, wherein the ratio of SiO2 / (Li2O + Na2O + K2O) is 2.0 to 15.0. By reasonably designing the content of each component, the glass obtained by the invention has the characteristics of low transitiontemperature, excellent chemical stability, high ultraviolet transmittance and the like.

Description

technical field [0001] The invention relates to an optical glass, in particular to an ultraviolet transparent optical glass. Background technique [0002] Compared with the traditional ultraviolet mercury light source, ultraviolet light-emitting diodes have the characteristics of high luminous efficiency, fast response and low cost, and have been widely used in medical beauty, sterilization, ultraviolet detection and other fields. In order to protect the LED chip and improve luminous efficiency, a layer of UV-transparent material is usually packaged on the surface of the LED chip. Organic glue is a commonly used UV-transparent material. However, the chemical stability of organic glue is poor, and it is easy to deteriorate the airtightness of the package due to corrosion for a long time. In addition, the attenuation of the transmittance of the organic glue under ultraviolet irradiation will lead to a decrease in the luminous efficiency of the LED. UV transparent glass is an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/091C03C3/093C03C4/00G02B1/00
CPCC03C3/091C03C3/093C03C4/0085G02B1/00
Inventor 郝良振孙伟毛露路
Owner CDGM OPTICAL GLASS
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