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Optical glass, glass preforms, optical components and optical instruments

A technology of optical glass, weight percentage, applied in optical components, instruments, optics, etc., which can solve problems such as poor water resistance, waste of optical components, affecting the imaging quality of optical glass, etc., and achieve the effect of excellent chemical stability

Active Publication Date: 2022-08-09
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 water 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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  • 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
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Embodiment

[0091]

[0092] In order to further clearly illustrate and illustrate the technical solutions of the present invention, the following non-limiting examples are provided.

[0093]In this Example, the optical glass which has the composition shown in Table 1 - Table 3 was obtained by the manufacturing method of the said optical glass. In addition, the characteristics of each glass were measured by the test method described in the present invention, and the measurement results were shown in Tables 1 to 3, wherein K1 was used to represent ZnO / Gd 2 O 3 ; K2 means 3×SiO 2 / WO 3 ; K3 for Gd 2 O 3 / (La 2 O 3 +Gd 2 O 3 +Y 2 O 3 ); K4 means Ta 2 O 5 / WO 3 ; K5 for B 2 O 3 / WO 3 ; K6 means (Gd 2 O 3 +WO 3 ) / (La 2 O 3 +TiO 2 +ZrO 2 ); K7 represents Nb 2 O 5 / (Nb 2 O 5 +TiO 2 +Ta 2 O 5 ); K8 means (Gd 2 O 3 +La 2 O 3 ) / (WO 3 +Nb 2 O 5 ).

[0094] Table 1

[0095]

[0096]

[0097] Table 2

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[0099]

[0100] table 3

[0101]

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Abstract

The invention provides a high-refractive-index and low-dispersion optical glass, the components of which are expressed in weight percentage and contain: La 2 O 3 : 15~40%; Gd 2 O 3 : 10~30%; WO 3 : 10~30%; TiO 2 : 0~10%; ZrO 2 : 0 to 10%, where (Gd 2 O 3 +WO 3 ) / (La 2 O 3 +TiO 2 +ZrO 2 ) is 0.6 to 2.5. In the present invention, by reasonably introducing various components and adjusting the ratio between the contents of the components, the optical glass obtained by the present invention has the desired refractive index and dispersion, and at the same time has excellent chemical stability.

Description

technical field [0001] The invention relates to an optical glass, in particular to an optical glass with high refractive index and low dispersion, glass preforms, optical elements and optical instruments. Background technique [0002] A lens formed of high-refractive-index, low-dispersion glass can be combined with a lens formed of ultra-low-dispersion glass to form a cemented lens, thereby correcting chromatic aberration and making the optical system compact. Therefore, high-refractive-index, low-dispersion glass occupies a very important position as an optical element constituting a projection optical system such as an imaging optical system and a projector. [0003] In recent years, optical glass has been widely used in automotive, monitoring and security fields, and optical glass used in automotive, security and other fields has been exposed to the outdoors for a long time, so the requirements for chemical stability such as acid resistance and water resistance of optical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/068C03C1/00G02B1/00
CPCC03C3/068C03C1/004G02B1/00
Inventor 孙伟
Owner CDGM OPTICAL GLASS