Optical glass, glass prefabricated part, optical element and optical instrument

A technology of optical glass, weight percentage, applied in the direction of optical components, optics, instruments, etc., can solve the problems of poor devitrification resistance, increase the production cost of optical glass, etc.

Active Publication Date: 2019-05-21
CDGM OPTICAL GLASS
View PDF12 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN102849942A discloses an optical glass with a refractive index of 1.74-1.80 and an Abbe number of 45-55, which contains 16%-23% of Gd 2 o 3

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, glass prefabricated part, optical element and optical instrument
  • Optical glass, glass prefabricated part, optical element and optical instrument
  • Optical glass, glass prefabricated part, optical element and optical instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0124]

[0125] In order to further clearly illustrate and illustrate the technical solution of the present invention, the following non-limiting examples are provided.

[0126] In this example, the optical glass having the composition shown in Table 1 to Table 2 was obtained by using the above-mentioned manufacturing method of optical glass. In addition, the properties of each glass were measured by the test method described in the present invention, and the measurement results are shown in Tables 1 to 2.

[0127] Table 1

[0128]

[0129]

[0130] Table 2

[0131]

[0132]

[0133]

[0134] Cut the optical glass obtained in Examples 1 to 10 in Table 1 into a predetermined size, and then apply a release agent evenly on the surface, then heat and soften it, and perform pressure molding to make a concave meniscus lens, Prefabricated parts of various lenses and prisms such as convex meniscus lens, biconvex lens, biconcave lens, plano-convex lens, plano-concave ...

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 low-chromatic-dispersion optical glass. The optical glass comprises, by weight, 20-35% of B2O3, 32-52% of La2O3, 6-20% of Y2O3, 0-15% of Gd2O3 and 1-12% ofZrO2, wherein Y2O3/(Y2O3+Gd2O3) is 0.6-1.0. The Young modulus E of the optical glass is 10000*10<7> or above. Through reasonable component design, the obtained optical glass has high refractive indexand low chromatic dispersion, and is low in production cost, excellent in devitrification resistance and high in Young modulus.

Description

technical field [0001] The invention relates to an optical glass, in particular to an optical glass with high refractive index and low dispersion. Background technique [0002] Today, with the rapid development of science and technology, devices such as digital cameras, digital video cameras, and camera phones are becoming more and more popular. Taking the traditional SLR camera as an example, several spherical lenses are required in one lens, and aspherical lenses processed by high refractive index and low dispersion optical glass can replace several spherical lenses with one piece, which greatly reduces the weight of the lens . Combining lenses made of high-refractive-index low-dispersion optical glass with lenses made of high-refractive-index high-dispersion optical glass can correct chromatic aberration and miniaturize the optical system, especially when the refractive index nd is 1.75 to 1.81 and the Abbe number νd is 45-51 environmental protection optical glass with ...

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): C03C3/068C03C3/21G02B1/00
Inventor 孙伟
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