Optical glass

A technology of optical glass and optical components, applied in optics, optical components, instruments, etc., can solve problems such as difficult to meet the requirements of chemical stability, achieve excellent chemical stability and meet the effect of environmental protection

Active Publication Date: 2019-09-13
CDGM OPTICAL GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN101215086A discloses an optical glass with a refractive index of 1.65-1.85 and an Abbe number of 20-35, which contains a large amount of P 2 o 5 and Nb 2 o 5 , chemical stability is difficult to meet the requirements of modern optics for optical materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0086]

[0087] In order to further clearly illustrate and illustrate the technical solution of the present invention, the following non-limiting examples are provided.

[0088] 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.

[0089] Table 1

[0090]

[0091]

[0092] Table 2

[0093]

[0094]

[0095]

[0096] 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...

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PUM

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Abstract

The invention provides optical glass. The optical glass comprises, by weight, 40 to 58% of SiO2, 18 to 32% of TiO2, 3 to 20% of Na2O and 6 to 20% of K2O, wherein a ratio of TiO2 to SiO2 is 0.35 to 0.8. Through reasonable component design and a reasonable component ratio, the optical glass of the invention meets the demands for desired refractive index and Abbe number, has excellent chemical stability, does not contain harmful components like PbO, and satisfies the requirements of environmental protection.

Description

technical field [0001] The invention relates to an optical glass, in particular to an optical glass with a refractive index of 1.61-1.69 and an Abbe number of 29-36. Background technique [0002] With the continuous integration of optics and electronic information science and new material science, the application of optical glass as the basic material of optoelectronics in the fields of optical transmission, optical storage and optoelectronic display has advanced by leaps and bounds. In recent years, optical components and optical instruments have developed rapidly in terms of digitalization, integration and high precision, which put forward higher requirements for the performance of optical glass used in optical instruments and optical components of equipment. [0003] With the increasing calls for environmental protection around the world, the research and development of lead-free and arsenic-free optical glass continues. 40 optical glass contains 30-60% lead oxide in its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/097C03C3/095C03C4/00C03C1/00G02B1/00
CPCC03C3/097C03C3/095C03C4/00C03C1/00G02B1/00
Inventor 黄刚
Owner CDGM OPTICAL GLASS
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