Optical glass, glass preforms, optical components and optical instruments

An optical glass, weight percentage technology, applied in the field of optical components, optical instruments, and glass preforms, can solve the problems of poor anti-devitrification performance, easy precipitation of crystals, cost and energy waste, etc.

Active Publication Date: 2022-01-25
CDGM OPTICAL GLASS
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the anti-crystallization performance of optical glass is not good, it is easy to precipitate crystals during the production process, resulting in the waste of glass, especially in the second pressing process, crystallization will cause the optical components formed by pressing to be unusable, resulting in cost and energy losses. waste

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 preforms, optical components and optical instruments
  • Optical glass, glass preforms, optical components and optical instruments
  • Optical glass, glass preforms, optical components and optical instruments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0115]

[0116] In order to further clearly illustrate and illustrate the technical solution of the present invention, the following non-limiting examples are provided.

[0117] 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.

[0118] Table 1

[0119]

[0120]

[0121] Table 2

[0122]

[0123]

[0124]

[0125] The glasses obtained in Examples 1 to 20 of the optical glass are used, for example, by means of grinding, or hot press molding, precision stamping, and other compression molding methods to produce concave meniscus lenses, convex meniscus lenses, and double-convex lenses. , biconcave lens, plano-convex lens, plano-concave lens and other prefabricated parts of various len...

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
crystallization temperatureaaaaaaaaaa
transition temperatureaaaaaaaaaa
crystallization temperatureaaaaaaaaaa
Login to view more

Abstract

The invention provides an optical glass, the composition of which is represented by weight percentage, containing: SiO 2 : 0~20%, B 2 o 3 : 10-30%, La 2 o 3 : 20-50%, Gd 2 o 3 : 0~15%, Y 2 o 3 : 0 to 15%, ZnO: 12 to 30%, WO 3 : 4~20%, Nb 2 o 5 : 0~15%, ZrO 2 : 0~10%, of which WO 3 / ZnO is 0.15 to 1.5. Through reasonable component design, the present invention enables the obtained optical glass to have relatively large positive refractive index temperature coefficient and excellent crystallization resistance under the condition of obtaining desired optical properties such as refractive index and Abbe number.

Description

technical field [0001] The invention relates to an optical glass, in particular to an optical glass with a refractive index of 1.75-1.85 and an Abbe number of 37-47, as well as glass preforms, optical elements and optical instruments made of the optical glass. Background technique [0002] In the prior art, glass with a refractive index of 1.75-1.85 and an Abbe number of 37-47 belongs to high refractive index glass, and is widely used in various lenses. In recent years, vehicle-mounted lens equipment has developed vigorously. Compared with general photography and other applications, the quality of vehicle-mounted lenses is closely related to safety. Therefore, vehicle-mounted lenses place more emphasis on the reliability of equipment, especially when exposed outside the vehicle body, it needs to withstand harsh conditions. Working environment, such as reversing camera, front-view camera, rear-view mirror auxiliary camera, etc. [0003] The principle of designing a vehicle-m...

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 Patents(China)
IPC IPC(8): C03C3/068
Inventor 袁伟何波
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