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

A technology of optical glass and fluorophosphate, which is applied in the fields of optical components and optical instruments, optical prefabricated parts, and fluorophosphate optical glass. It can solve the problems of affecting the imaging quality of optical glass, poor moisture resistance, and discarded optical components.

Active Publication Date: 2019-04-16
CDGM OPTICAL GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, during the processing of optical glass, it will also be exposed to a large amount of corrosive media. If its acid resistance and moisture resistance are poor, the imaging quality of optical glass will be affected, and even the processed optical components will be completely discarded.

Method used

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

Examples

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Embodiment

[0128]

[0129] In order to further clearly illustrate and illustrate the technical solution of the present invention, the following non-limiting examples are provided.

[0130] In this example, the optical glass having the components 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.

[0131] Table 1

[0132]

[0133]

[0134] Table 2

[0135]

[0136]

[0137] In the above table 1~table 2, Ln in embodiment 5 3+ The content is 1.1% by La 3+ : 0.5% and Gd 3+ : 0.6% composition; Rn in Example 7 + The content is 1.2% by Li + : 0.5%, Na + : 0.5% and K + : 0.2% composition; Rn in Example 11 + The content is 2.2% by Li + : 0.7%, Na + : 0.5% and K + : 1.0% composition; Ln in Example 12 3+ The content is 2.25% by La 3+ : 1%, Gd 3+ : 0...

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Abstract

The invention provides optical glass moderate in refractive index and low in refractive index temperature coefficient. The glass comprises SiO2, B2O3, La2o3, RO and RnO2, wherein RO is one or more ofMgO, CaO, SrO and BaO, and Rn2O is one or more of Li2O, K2O and Na2O. The refractive index of the optical glass is 1.65-1.73, the abbe number is 47-55, and meanwhile, the glass is low in refractive index temperature coefficient and excellent in anti-crystallization performance and chemical stability.

Description

technical field [0001] The invention relates to an optical glass, in particular to a fluorophosphate optical glass, an optical preform, an optical element and an optical instrument made of the optical glass. Background technique [0002] In the optical system, in order to eliminate the chromatic aberration of the lens, the "achromatic" design of combining glasses with different Abbe numbers is usually adopted, so it is necessary to combine optical glasses with different refractive indices and Abbe numbers to form a reasonable optical system. As a new type of glass material widely used, fluorophosphate optical glass has the characteristics of low dispersion. In the optical system, it can eliminate the special dispersion of the secondary spectrum, improve the resolution, and significantly improve the imaging quality of the optical system. At the same time, it also has low softening. temperature, it can be directly precision molded into advanced aspheric lenses. [0003] In re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/247C03C3/112G02B1/00
CPCC03C3/112C03C3/247G02B1/00
Inventor 赖德光郝良振
Owner CDGM OPTICAL GLASS
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