Fluorophosphate glass

A technology of fluorophosphate glass and phosphorus ions, which is applied in the field of high-hardness fluorophosphate glass, can solve the problems of fluorophosphate glass being fragile, and achieve the effect of high hardness and good thermal expansion coefficient

Active Publication Date: 2020-01-31
PLATINUM OPTICS TECH SUZHOU INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present application is to provide a fluorophosphate glass to solve the problems existing in the prior art that the fluorophosphate glass is easy to be broken when it is thinned

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The weight percent of the ionic composition of the fluorophosphate glass of this embodiment includes 21.26% of phosphorus ions, 13.49% of aluminum ions, 6.85% of lithium ions, 2.14% of sodium ions, 6.34% of magnesium ions, and 11.25% of calcium ions , 13% strontium ions, 8.44% barium ions, 13.05% zinc ions, 2% zirconium ions and 1.18% copper ions. After thermal properties and hardness tests, the hardness of the fluorophosphate glass of this embodiment is 422HK, and its coefficient of thermal expansion is 13.7*10 - 6 k -1 .

Embodiment 2

[0016] The weight percent of the ion composition of the fluorophosphate glass of this embodiment includes 20.38% of phosphorus ions, 13.08% of aluminum ions, 11.26% of lithium ions, 2.09% of sodium ions, 6.7% of magnesium ions, and 12.96% of calcium ions , 6.7% of strontium ions, 8.96% of barium ions, 13.36% of zinc ions, 2.05% of zirconium ions and 2.46% of copper ions. After thermal properties and hardness tests, the hardness of the fluorophosphate glass of this embodiment is 422HK, and its coefficient of thermal expansion is 13.8*10 -6 k -1 .

Embodiment 3

[0018] The weight percent of the ion composition of the fluorophosphate glass of this embodiment includes 20.36% of phosphorus ions, 13.08% of aluminum ions, 12.26% of lithium ions, 2.09% of sodium ions, 6.7% of magnesium ions, and 12.96% of calcium ions , 6.13% strontium ions, 3.54% barium ions, 12.38% zinc ions, 0.5% zirconium ions and 10% copper ions. After thermal properties and hardness tests, the hardness of the fluorophosphate glass of this embodiment is 429HK, and its coefficient of thermal expansion is 13.8*10 -6 k -1 .

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Abstract

The invention discloses fluorophosphate glass comprising phosphorus ions, aluminum ions, zirconium ions, copper ions, alkali metal ions, alkali earth ions and divalent metal ions, wherein the weight percentage of the phosphorus ions is 18%-25%; the weight percentage of the aluminum ions is 11%-21%; the weight percentage of the zirconium ions is 0.5%-7%; the weight percentage of the copper ions is0.1%-10%; the weight percentage of the alkali metal ions is 6%-18%; the weight percentage of the alkaline earth ions is 27-58%; and the weight percentage of the divalent metal ions is 27-58%. The hardness of the fluorophosphate glass is greater than 400 HK, and the thermal expansion coefficient of the fluorophosphate glass is less than or equal to 14*10<-6> k<-1>, so that the fluorophosphate glasshas high hardness and good thermal expansion coefficient; the fluorophosphate glass is not easy to break when being thinned, and the thickness of the fluorophosphate glass can be less than or equal to 0.1 mm.

Description

technical field [0001] The present application relates to the technical field of fluorophosphate glass, in particular to a high-hardness fluorophosphate glass. Background technique [0002] In recent years, near-infrared cut-off filters have been widely used in photographic components such as image sensors (CCD & CMOS), and the rapid development of optical materials is also in the direction of high precision and miniaturization. The base materials of this type of infrared cut filter can be divided into inorganic materials, organic materials and organic-inorganic composite materials. [0003] Inorganic materials are represented by copper-containing phosphate glass or fluorophosphate glass. The disadvantage of phosphate glass is poor weather resistance. Fluorophosphate glass is a new type of glass material that is widely used, with better weather resistance and low scattering. Advantages, but the hardness of fluorophosphate glass is lower than 400HK, and there is a problem of...

Claims

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Application Information

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IPC IPC(8): C03C3/21
CPCC03C3/21
Inventor 陈哲宇谢祥暐
Owner PLATINUM OPTICS TECH SUZHOU INC
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