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Lanthanides optical glass TZLaF5 with high refraction index, low dispersion and environmental protection

A high-refractive-index, optical glass technology, applied in the field of high-refractive-index, low-dispersion environment-friendly lanthanide optical glass, TZLaF5

Inactive Publication Date: 2011-02-16
NANTONG JINGXIN OPTICAL GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not easy to produce a glass with the same properties as lead oxide or arsenic oxide by using only one or more components instead of lead oxide and arsenic oxide.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] Use embodiment again below, the present invention is further described:

[0008] The following is the Chinese description of each molecular formula:

[0009] SiO 2 --Silicon oxide, B 2 o 3 --Boron oxide, La 2 o 3 -- Lanthanum oxide, Gd 2 o 3 -- Gadolinium Oxide, ZrO 2 --Zirconium oxide, Ta 2 o 5 --Tantalum Oxide, ZnO--Zinc Oxide, BaF 2 -- Barium fluoride, AL 2 o 3 --Alumina

[0010] Embodiment 1-5 component of the present invention, process parameter performance is as following table:

[0011] Component

Example 1

Example 2

Example 3

Example 4

Example 5

SiO 2

5.50

5.10

6.30

9.00

5.00

B 2 o 3

18.00

15.01

16.20

15.60

18.00

La 2 o 3

31.20

33.00

26.00

25.00

35.00

Gd 2 o 3

31.00

32.00

36.00

28.00

29.00

ZrO 2

5.00

5.30

5.00

8.00

4.00

Ta 2 o 5

6.0...

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PUM

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Abstract

The invention discloses a formula of lanthanides optical glass TZLaF5 with high refraction index, low dispersion and environmental protection, and a production technology thereof. The lanthanides optical glass comprises the following components in percentage by weight: 5 to 10% of SiO2, 15 to 20% of B2O3, 25 to 36% of La2O3, 28 to 40% of Gd2O3, 4 to 10% of ZrO2, 5 to 10% of Ta2O5, 1 to 5% of ZnO, 1 to 5% of BaF2, and 1 to 5% of Al2O3. The lanthanides optical glass is produced by the steps of mixing the components, founding at the temperature of 1430 to 1480 DEG C, molding at 1200 DEG C, and performing fine annealing on the molded mixture for about 7 days at the temperature of 650 to 700 DEG C. The TZLaF5 is the lanthanides optical glass with high refraction index and low dispersion for producing digital camera, digital video, high-grade mobile phone and the like.

Description

Technical field: [0001] The present invention is a grade in the category of heavy lanthanum flint glass. It is a necessary supporting material for the manufacture of digital cameras, digital cameras, mobile phones, microscopes, etc., and is also widely used in aerospace, aviation, and other high-refractive-index-low-dispersion lanthanide Optical glass TZLaF5. Background technique [0002] Lanthanide optical glass TZLaF8 has a high refractive index, nd=1.8160, and its dispersion index is lower than other lanthanide glasses with a refractive index greater than 1.80, nt-nc=0.01751. The glass composition contains lead oxide and arsenic trioxide, which will pollute the environment. Now Advanced optical instruments require glass that is free of lead and arsenic and has good optical properties. However, it is not easy to produce a glass with the same properties as lead oxide or arsenic oxide by using only one or more components instead of lead oxide and arsenic oxide. Contents o...

Claims

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Application Information

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IPC IPC(8): C03C3/068
Inventor 汤志平
Owner NANTONG JINGXIN OPTICAL GLASS
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