Environmental protective heavy flint optical glass in high refractive index, and high dispersion, and producing method and equipment

A high refractive index, optical glass technology, applied in glass furnace equipment, glass manufacturing equipment, manufacturing tools, etc., can solve the problems affecting the optical transmission performance of glass, long production cycle, high production cost, and improve the optical transmission performance. , The effect of short production cycle and few processes

Active Publication Date: 2007-02-21
CDGM OPTICAL GLASS
View PDF0 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this production method passes through two high temperatures, the optical transmission perform...

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environmental protective heavy flint optical glass in high refractive index, and high dispersion, and producing method and equipment
  • Environmental protective heavy flint optical glass in high refractive index, and high dispersion, and producing method and equipment
  • Environmental protective heavy flint optical glass in high refractive index, and high dispersion, and producing method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The optical glass of the present invention contains 20-44% glass former SiO 2 , if SiO 2 If the content of SiO is too high, the refractive index and dispersion index of the glass cannot meet the requirements, and at the same time, the melting temperature becomes higher and it is not easy to melt; if SiO 2 If the proportion of the content is too low, the crystallization performance and chemical stability will be reduced, the preferred SiO 2 Content of 23-44%, especially preferred SiO 2 The content is 25-37%.

[0018] In addition to the glass former, a certain proportion of flux is needed to reduce the high refractive index components with high melting temperature. If the content of flux is too high, it will affect the grinding performance and chemical stability of the glass; if the content of flux is too high Low, the high refractive index component is refractory. Therefore, the flux Na in the glass 2 O+K 2 The total content of O is 7-27%, of which Na 2 O content ...

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

This invention provides a method for producing environmentally friendly heavy-flint optic glass with high refractivity and high color dispersion. The heavy-flint optic glass is composed of: SiO2 20-44 wt.%, TiO2 22-34 wt.%, Nb2O5 5-22 wt.%, Na2O 7-18 wt.%, BaO 9-17 wt.%, K2O 0-9 wt.%, CaO 0-3 wt.%, ZrO2 0-3 wt.%, SrO 0-0.5 wt.% and Sb2O3 0-0.5 wt.%. The method comprises (1) mixing the raw materials uniformly; (2) melting in a tank furnace at 1150-1300 deg.C to obtain glass liquid with uniform refractivity; (3) clearing, homogeneizing and molding the glass liquid into glass stripes; (4) annealing in an annealing furnace. The equipment comprises a tank furnace and an annealing furnace. The melting pool of the tank furnace is connected with an automatic burning control system. The heavy-flint optic glass dose not contains pollutive components such as PbO, As2O3 and GdO. The method can reduce the times of high-temperature melting and improve the optic permeability.

Description

technical field [0001] The invention relates to an optical glass and its production method and equipment, in particular to a high refractive index (Nd) high dispersion environment-friendly heavy flint optical glass and its production method and equipment. Background technique [0002] With the improvement of people's living standards, in order to meet the high image number, small and light requirements of high-end digital products, the demand for heavy flint optical glass with the advantages of high refractive index, high dispersion (low Abbe number), and low density is increasing. Large, but the PbO and As contained in the optical glass 2 o 3 and GdO cause serious pollution to the environment. For this reason, optical equipment manufacturers require that glass with the same optical properties does not contain PbO, As 2 o 3 and GdO ingredients. [0003] In order to make the optical glass have a high refractive index, TiO in the glass composition 2 and Nb 2 o 5 The con...

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): C03C3/062C03C3/078C03C4/00C03B5/235
CPCC03B5/187C03C3/062C03C3/097
Inventor 孙伟陆明新严从勋刘家友
Owner CDGM OPTICAL GLASS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap