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

High-refractivity optical glass and preparation method thereof

An optical glass, high refractive index technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of complex process, affect economic benefits, high cost, achieve good chemical stability, simplify the optical system, improve The effect of image quality

Inactive Publication Date: 2016-12-14
SICHUAN YUGUANG OPTICAL GLASS CO LTD
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional glass preparation process generally adds a large amount of expensive Ta2O5 and a certain amount of WO3 to the optical glass formula. Although the refractive index of the optical glass is improved, it also brings high production costs, poor stability, and strong coloring. Defects. On the other hand, the waste etching solution needs to be treated and discharged after reaching the standard. However, the treatment of waste etching solution is difficult and expensive, which greatly increases the production cost and affects economic benefits.
Strengthened glass with anti-glare function must be strengthened and etched twice, and the process is relatively complicated.

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

[0018] In the present embodiment 1, the present invention comprises the following components according to the molar percentage content: 15% silicon dioxide, 31% dilanthanum trioxide, 22% diboron trioxide, 10% nano titanium dioxide or nano silicon powder, 10% aluminum oxide, 5% sodium oxide, 2% potassium oxide, 3% calcium oxide and 2% dispersant.

[0019] The refractive index of the optical glass is 1.75, the transmittance of the finished glass is 80% in the wavelength range of 280nm, and the average linear expansion coefficient at 30-300°C is 85×10-7 / °C.

[0020] In this embodiment 2, 17% of silicon dioxide, 33% of lanthanum trioxide, 25% of boron trioxide, 5% of nano-titanium dioxide or nano-silica powder, 8% of aluminum oxide, 5% of oxide Sodium, 2% potassium oxide, 3% calcium oxide and 2% dispersant, the average coefficient of linear expansion at 30-300°C is 93×10-7 / °C.

[0021] The refractive index of the optical glass is 1.85, and the transmittance of the finished glass ...

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

PropertyMeasurementUnit
refractive indexaaaaaaaaaa
refractive indexaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-refractivity optical glass and a preparation method thereof. The high-refractivity optical glass contains the following components in molar percentage: 10%-12% of silica, 31%-33% of lanthanum trioxide, 22%-25% of boron trioxide, 10%-15% of nano titanium dioxide or nano silicon powder, 5%-10% of alumina, 5%-8% of sodium oxide, 0%-3% of potassium oxide, 1%-5% of calcium oxide and 0%-5% of dispersing agent. The refractivity of the optical glass can be improved by adding high-refractivity titanium dioxide or nano silicon powder, the chemical stability is good, the refractivity is 1.75-1.85 within the wavelength ranging from 280-380, and the optical glass is applicable to high-precision imaging mirrors, an optical system can be simplified, and the imaging quality is improved.

Description

technical field [0001] The invention relates to a glass, in particular to a high-refractive-index optical glass and a preparation method thereof. Background technique [0002] With the rapid development of precision optical instruments, optical information communication, and optoelectronic products, the demand for optical glass with excellent performance is increasing, and the requirements are getting higher and higher. In optical design and optical communication, the refractive index is 1.9 The optical glass between ~2.2 has far-reaching significance for simplifying the optical system, improving the imaging quality, further miniaturizing mobile phones and digital cameras, and advancing optical communication technology. [0003] The traditional glass preparation process generally adds a large amount of expensive Ta2O5 and a certain amount of WO3 to the optical glass formula. Although the refractive index of the optical glass is improved, it also brings high production costs,...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C03C4/00C03C6/04C03B19/02
CPCC03B19/02C03C1/00C03C4/00
Inventor 何宇陈功林郑章国
Owner SICHUAN YUGUANG OPTICAL GLASS CO LTD
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