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High refractivity lanthanum optical glass LaSF010

A technology of optical glass and high refractive index, which is applied in the field of high refractive index lanthanide optical glass LaSF010, can solve the problems of high cost, crystallization performance, molding performance and poor refractive index, etc., and achieve the reduction of raw material cost and the quality and performance of glass. effect of influence

Inactive Publication Date: 2004-09-29
上海新沪玻璃有限公司
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Problems solved by technology

[0004] It has high cost, poor crystallization performance, formability and refractive index

Method used

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Embodiment Construction

[0011] Below, the present invention will be further described with embodiment again:

[0012] Components, process parameters, and performance parameters of embodiments of the present invention 1-3 are as follows:

[0013] Component Technical parameter Embodiment 1 Embodiment 2 Embodiment 3

[0014] SiO 2 (parts by weight) 3.45 3.33 4.70

[0015] B 2 o 3 (parts by weight) 25.11 24.53 22.75

[0016] La 2 o 3 (parts by weight) 35.10 36.26 31.20

[0017] Ta 2 o 5 (parts by weight) 4.90 4.81 0.51

[0018] Y 2 o 3 (parts by weight) 5.61 5.51 5.70

[0019] ZrO 2 (parts by weight) 5.80 5.81 4.65

[0020] Nb 2 o 5 (parts by weight) 10.70 9.85 7.58

[0021] PbO (parts by weight) 5.85 6.50 9.23

[0022] TiO 2 (parts by weight) 1.70 1.65 2.00

[0023] ZnO (parts by weight) 1.70 1.75 2.50

[0024] WO 3 (parts by weight) 1.62

[0025] Gd 2 o 3 (parts by weight) 7.56

[0026] Total (parts by weight) 99.92 100 100

[0027] M...

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Abstract

The present invention relates to high refractivity lanthanide optical glass LaSF010 and its production process. It has components including SiO2 3-5 wt%, B2O3 2-26 wt%, La2O3 29-35 wt%, Nb2O5 7-12 wt%, ZrO2 4-6.5 wt%, Y2O3 5-6.5 wt%, ZnO 1.5-3.0 wt%, Ta2O5 0-5 wt%, PbO 4.5-11 wt%, WO3 0-2.5 wt%, TiO2 1-2 wt% and Gd2O3 0-8 wt%. The production process includes mixing the said components, smelting at 1340-1360 deg.c, shaping at 1170 deg.c, inspection, annealing at 600-650 deg.c for 9 days. The lanthanide optical glass is used in making high grade camera, precise instrument, etc. and has high refractivity and low chromatic dispersion.

Description

Technical field [0001] The present invention is a grade in the category of heavy lanthanum flint glass, and it is a necessary supporting material for manufacturing digital cameras, digital video cameras, CDROMs, scanners and other digital photoelectric products. High refractive index dispersion lanthanide glass. Background technique [0002] Currently, LaSF 010 The composition of heavy lanthanum flint optical glass is: [0003] SiO 2 -B 2 o 3 -La 2 o 3 -Nb 2 o 5 -ZrO 2 -Y 2 o 3 -Ta 2 o 5 -PbO 2 -TiO 2 [0004] It has high cost, poor crystallization performance, moldability and refractive index. Contents of the invention [0005] The object of the present invention is to provide a kind of optical constant (nd, vd), the lanthanide glass with high refractive index and high dispersion, whose air bubbles and stripes meet the standard requirements, good crystallization performance and molding performance. [0006] The present invention is based on SiO 2 , B 2...

Claims

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Application Information

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IPC IPC(8): C03C3/068C03C3/074C03C4/00
CPCC03C3/074
Inventor 王佩珍
Owner 上海新沪玻璃有限公司
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