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Optical glass NLaSF016 without arsenic, lead, cadmium and lanthanide series

An optical glass and lanthanide technology, applied in the field of arsenic-free, lead-free and cadmium-free lanthanide series optical glass NLaSF016, can solve the problems of optical glass polluting the environment, etc., and achieve the effect of improving crystallization performance and reducing raw material cost

Inactive Publication Date: 2006-04-05
上海新沪玻璃有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the existing LaSF 016 Components contain As 2 o 3 , optical glass will pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] The present invention is further described below with embodiment.

[0009] Component

technical parameter

Example 1

Example 2

Example 3

Example 4

Example 5

SiO 2

(parts by weight)

1.56

2.63

2.60

2.61

2.37

B 2 o 3

(parts by weight)

30.55

30.48

30.28

30.26

30.35

La 2 o 3

(parts by weight)

44.20

44.19

43.41

43.87

43.40

Y 2 o 3

(parts by weight)

10.50

10.26

12.36

11.39

10.51

ZrO 2

(parts by weight)

7.65

7.00

6.95

6.95

6.90

Nb 2 o 5

(parts by weight)

1.90

1.80

0.77

1.30

1.85

BaO

(parts by weight)

2.52

2.53

2.51

2.51

3.52

WO 3

(parts by weight)

1.12

1.11

1.12

1.11

1.10

Feeding temperature (°C)...

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PUM

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Abstract

The invention discloses an As-free, Pb-free and Cd-free lanthanide optical glass (NLaSFO16), whose components include (by weight percent): SiO2: 1.5-3.4, B2O3: 29.5-33.0, La2O3: 42.0-44.20, Nb2O5: 1.0-2.5, ZrO2: 6.1-8.0, Y2O3: 10.5-12.5, WO3: 0.7-2.1, BaO: 1.7-3.2. By removing As2O3, a novel environmentally friendly optical glass can be obtained. By charging right amount of Nb2O5, the recrystallization performance can be improved.

Description

Technical field [0001] The present invention is a grade in the category of heavy lanthanum flint glass, and is used to manufacture high-refractive-index and low-dispersion lanthanide optical glass such as high-grade cameras and high-grade precision instruments. Background technique [0002] At present, it is used to manufacture lanthanide optical glass with high refractive index and low dispersion for advanced cameras and advanced precision instruments. LaSF 016 Composition is SiO 2 , B 2 o 3 , La 2 o 3 , Nb 2 o 5 , ZrO 2 , Y 2 o 3 , ZnO, Ta 2 o 5 , As 2 o 3 . [0003] Due to the existing LaSF 016 Components contain As 2 o 3 , Optical glass will pollute the environment. Contents of the invention [0004] The object of the present invention is to provide a heavy lanthanum flint glass with high refractive index and low dispersion, which is pollution-free and has good optical constants, crystallization performance and formability. [0005] The content of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/064
CPCC03C3/068
Inventor 王佩珍
Owner 上海新沪玻璃有限公司