Optical glass

An optical glass, weight percentage technology, applied in the field of optical glass with high refractive index and low dispersion, can solve the problems of difficult to obtain a wide range of applications, decreased glass transmittance, poor transmittance, etc.

Active Publication Date: 2022-04-12
CDGM OPTICAL GLASS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The optical transmittance of optical glass is an important indicator affecting its application. If the transmittance is poor, it will be difficult to obtain a wide range of applications.
CN101723584A discloses an optical glass with a refractive index of 1.74-1.82 and an Abbe number of 40-47, which contains 5-12% of WO 3 , a large number of WO 3 The introduction of the glass leads to a decrease in the transmittance of the

Method used

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Examples

Experimental program
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Embodiment

[0099]

[0100] In order to further clearly illustrate and illustrate the technical solution of the present invention, the following non-limiting examples are provided.

[0101] In this example, the optical glass having the compositions shown in Table 1 to Table 3 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 3.

[0102] Table 1

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[0105] Table 2

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[0108] table 3

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[0111]

[0112] The glasses obtained in Examples 1 to 10 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 a...

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PUM

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Abstract

The invention provides a high refractive index and low dispersion optical glass, the components of which are represented by weight percentage, containing: SiO 2 : 1 to 25%, B 2 o 3 : 1~25%, La 2 o 3 : 20-45%, Y 2 o 3 : 0 to 15%, ZnO: 20 to 40%, WO 3 : Less than 5%, ZrO 2 : 0~15%, of which ZnO / (La 2 o 3 +Y 2 o 3 ) is 0.45 to 1.2. Through reasonable component design, the present invention enables the obtained optical glass to have a large positive refractive index temperature coefficient and excellent light transmittance 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 high refractive index and low dispersion. Background technique [0002] In the prior art, high refractive index glass 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 those exposed outside the vehicle body, which need 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-mounted lens to meet the harsh working environment is to keep the structure as simple as possible. The more complex the structure, the worse the reliability. Therefore, in order to meet the design r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/068
Inventor 袁伟何波
Owner CDGM OPTICAL GLASS
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