Optical glass

A technology of optical glass and weight percentage, applied in optics, optical components, instruments, etc., can solve the problems of easily corroded platinum or platinum alloy vessels, platinum-containing foreign matter, glass quality degradation, etc., and achieve the effect of excellent internal quality

Active Publication Date: 2021-10-12
CDGM OPTICAL GLASS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, the internal quality of the glass depends on the composition of the glass, including Li 2 During the high-temperature smelting process of O glass, Li in the glass component is easy to corrode platinum or platinum alloy vessels, resulting in more platinum-containing foreign matter in the finished glass, resulting in a decrease in the quality of the glass
At the same time, in the precision molding process, the mold is generally coated with a release agent containing carbon elements. The Li in the Li-containing glass component easily reacts with the carbon element in the release agent, resulting in a rough opaque film on the glass surface. layer, thereby causing the surface of the glass element to blur

Method used

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Embodiment

[0081]

[0082] In order to further clearly illustrate and illustrate the technical solution of the present invention, the following non-limiting examples are provided.

[0083] 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.

[0084] Table 1

[0085]

[0086] Table 2

[0087]

[0088]

[0089]

[0090] 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 lenses and pris...

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Abstract

The invention provides an optical glass which does not contain Li in its components 2 O, whose composition is expressed in weight percent, contains: SiO 2 : 40~58%; TiO 2 : 18~32%; Na 2 O: 3-20%; K 2 O: 6-20%, the optical glass has a refractive index of 1.61-1.69 and an Abbe number of 29-36. Through reasonable component design and proportioning, the optical glass of the present invention has excellent internal quality while meeting desired 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 1.61-1.69 and an Abbe number of 29-36. Background technique [0002] With the continuous integration of optics, 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] For optical glass, the refractive index and Abbe number are its core optical characteristics. Refractive index and Abbe number determine the basic functions of glass. In addition to the desired optical proper...

Claims

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Application Information

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IPC IPC(8): C03C3/076C03C3/078G02B1/00
CPCC03C3/076C03C3/078G02B1/00
Inventor黄刚
OwnerCDGM OPTICAL GLASS