Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Arsenic-free and leadless lanthanum crown optical glass NLaK40 and method for manufacturing same

A technology of lead-free lanthanum crown optics and optical glass, applied in the field of lead-free lanthanum crown optics and its manufacture, and arsenic-free, can solve environmental pollution and other problems, and achieve good melting and operability effects

Inactive Publication Date: 2008-12-31
上海新沪玻璃有限公司
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current lanthanum crown optical glass, because it contains lead oxide and arsenic oxide, pollutes the environment, and only using one or more components to replace lead oxide usually cannot achieve the role played by lead oxide in the glass system to form the required optical glass. glass performance requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Table 1 below shows 6 examples of glass made from conventional optical glass raw materials

[0014] Table 1

[0015] Glass composition (in weight percent, based on oxides) and optical properties of the glass

[0016] 1 2 3 4 5 6

[0017] SiO 2 30 28.0 28.1 28.3 27.0 26.0

[0018] B 2 o 3 13.5 15.0 14.5 16.4 14.1 18.0

[0019] La 2 o 3 13.0 17.2 18.4 18.3 20 18.7

[0020] Gd 2 o 3 0.3 0.3 0.3 0.2 0.5 0.3

[0021] TiO 2 2.9 2.4 1.2 2.3 2.5 2.3

[0022] ZrO 2 1.4 0.9 0.9 0.9 0.5 0.8

[0023] CaO 1.4 0.8 0.8 0.7 0.8 0.5

[0024] BaO 35 32.4 33 30 31.8 30.5

[0025] Nb 2 o 5 0.2

[0026] K 2 O 0.5 1.3 1.3 1.2 1.4 1.3

[0027] WO 3 0.3 0.3 0.1 0.4 0.5 0.4

[0028] Na 2 O 1.5 1.4 1.4 1.3 0.9 1.2

[0029] no d 1.6612 1.6643 1.6624 1.6701 1.6699 1.6697

[0030] v d 51.46 51.38 52.24 50.96 51.37 51.40

[0031] The above-mentioned glasses are produced as follows: uniformly mix the above-mentioned compo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an arsenic-free and lead-free lanthanide optical glass NLaK40 and a manufacturing method, wherein, based on weight percentage, the glass comprises 25-30 percent of SiO2, 13-18 percent of B2O3, 13-20 percent of La2O3, 0-0.5 percent of Gd2O3, 1-3 percent of TiO2, 0.5-1.5 percent of ZrO2, 0.5-1.5 percent of CaO, 30-35 percent of BaO, 0-0.2 percent of Nb2O5, 0.5-2.0 percent of K2O, 0-0.5 percent of WO3, and 0.5-1.5 percent of Na2O. The invention uses TiO2, a small amount of Nb2O5, Gd2O3 and WO3 to replace PbO; meanwhile, the invention adds a small amount of CaO, Na2O, K2O and ZrO2 into the glass to adjust the melting performance and the required optical constant requirements; the invention also adds clarifying agent to the glass. The invention meets the required optical performance requirements and has good melting and operating performances, which can produce quality products at a low cost.

Description

technical field [0001] The invention relates to an arsenic-free and lead-free lanthanum crown optical glass and a manufacturing method thereof. Background technique [0002] The current lanthanum crown optical glass, because it contains lead oxide and arsenic oxide, pollutes the environment, and only using one or more components to replace lead oxide usually cannot achieve the role played by lead oxide in the glass system to form the desired optical glass. glass performance requirements. Contents of the invention [0003] The object of the present invention is to provide a kind of optical constant (n d , v d ), bubbles, and stripes meet the standard requirements, arsenic-free and lead-free lanthanum crown optical glass with good crystallization performance and formability. [0004] The present invention is based on SiO 2 , B 2 o 3 、La 2 o 3 , BaO based system, use TiO 2 , a small amount of Nb 2 o 5 、Gd 2 o 3 、WO 3 Replace PbO, and add a small amount of CaO, N...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C03C3/068
Inventor 翁泽安王佩珍
Owner 上海新沪玻璃有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com