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

Optical glass

An optical glass and necessary technology, applied in the field of optical glass, can solve the problems of damage to the glass network structure, erosion of melting equipment, deterioration of glass crystallization performance, etc., and achieve the effect of good crystallization performance and low glass price

Active Publication Date: 2012-09-19
HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
View PDF11 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] patent CN100352781C belongs to the same type of glass as the present invention, but it contains Li2O as an essential component, Li2O will corrode the smelting device and will destroy the glass network structure and make the crystallization performance of the glass worse, which does not meet the purpose and requirements of the present invention

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
  • Optical glass
  • Optical glass
  • Optical glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Examples 1 to 16 in Table 1 and Table 2 are typical experiments for obtaining lanthanide optical glasses with a refractive index (nd) between 1.90 and 1.92 and an Abbe number (vd) between 33 and 36 according to the present invention .

[0038] Calculate, weigh, and mix these raw materials according to the ratios provided in Tables 1-2 below, and put the prepared batch into the smelting device (in view of the application requirements of the present invention, the smelting device needs to use a platinum crucible), and then After smelting at 1420°C with appropriate stirring, clarification, and cooling processes, it is poured or leaked into the forming mold. Finally, after post-processing such as annealing and processing, or pressing and forming by secondary pressing technology, the environmentally friendly lanthanide optical glass or optical type can be obtained.

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 provides high refractive index and low dispersion lanthanide-series optical glass which is suitable for production and secondary compression. The high refractive index and low dispersion lanthanide-series optical glass comprises SiO2, B2O3, La2O3, ZrO2, Nb2O5, ZnO, Y2O3 and TiO2 which are taken as necessary components, and 0-1wt% of Sb2O3 taken as optional component; the optical glass does not contain Th, Cd or As; the content of SiO2 is more than that of B2O3; the refractive index (nd) is between 1.90 and 1.92; and the Abbe number (vd) is between 33 and 36.

Description

technical field [0001] The invention relates to an optical glass, in particular to a lanthanide optical glass with a refractive index (nd) between 1.90-1.92 and an Abbe number (vd) between 33-36. Background technique [0002] In recent years, in order to meet the high-pixel, small and light requirements of high-end digital products, the demand for lanthanide optical glass with advantages such as high refraction and low dispersion is increasing. When a lens made of glass with high refractive index and low dispersion is combined with a lens made of glass with high refractive index and high dispersion, the size of the optical system can be reduced, and chromatic aberration can be reduced at the same time. The optical elements of the system or projection optical system such as a projector occupy an important place. [0003] The glass disclosed in the patent CN101337768A belongs to the same kind of glass as the present invention, but its components contain more than 6% Gd 2 o ...

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): C03C4/00C03C3/068
Inventor 赵仲勋
Owner HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS 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

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