Optical glass, glass preforms, optical components and optical instruments

A technology of optical glass and mole percentage, which is applied in optical components, instruments, optics, etc., can solve the problems of shortening the service life of optical glass and reducing glass performance, and achieves excellent sunlight resistance stability, large degree of freedom, and low refractive index temperature The effect of the coefficient

Active Publication Date: 2022-04-15
CDGM OPTICAL GLASS
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The optical glass used for vehicle lenses is exposed to the natural environment for a long time, and it will receive sunlight for a long time, especially in the strong ultraviolet environment such as plateau, which will easily lead to the reduction of various performances of the glass and shorten the service life of the optical glass. Therefore, it is particularly important to develop an optical glass with excellent sunlight resistance and stability.

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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Effect test

Embodiment

[0091]

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

[0093] In this embodiment, the above-mentioned manufacturing method of optical glass was used to obtain the optical glass shown in Table 2-Table 3. 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 2 to 3. In Table 2~Table 3, R 2 O is represented by K1; R 2 O / Nb 2 o 3 The value is represented by K2; Li 2 O / R 2 The value of O is expressed in K3; Na 2 O / K 2 The value of O is expressed in K4; (SiO 2 +B 2 o 3 ) / P 2 o 5 The value is expressed in K5; TiO 2 / Nb 2 o 5 The value of K6 is represented by K6; in the anti-devitrification performance test, no obvious devitrification is recorded as "A", and obvious devitrification is recorded as "B".

[0094] Table 2.

[0095]

[0096] table 3. ...

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PUM

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Abstract

The invention provides an optical glass, the components of which are represented by mole percentage, containing: P 2 o 5 : 10~50%; Nb 2 o 5 : 10~35%; R 2 O: 15-50%; TiO 2 : 1~20%, of which TiO 2 / Nb 2 o 5 is 1.0 or less, the R 2 O is for Li 2 O, Na 2 O, K 2 The total content of O. Through reasonable component design, the optical glass of the present invention has a lower temperature coefficient of refraction index and excellent stability against sunlight while having expected refraction 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 1.73-1.82 and an Abbe number of 19-31. Background technique [0002] In the prior art, glass with a refractive index of 1.73-1.82 and an Abbe number of 19-31 belongs to high refractive index and high dispersion optical glass, and is widely used in various lens designs. In recent years, vehicle lens equipment has been vigorously developed. Compared with general photography and other applications, the quality of vehicle-mounted lenses is closely related to safety, so the design of vehicle-mounted lenses places more emphasis on the reliability of the equipment, especially when it is exposed outside the vehicle body and needs to withstand harsh working environments, such as reversing cameras and front-view cameras. , rearview mirror auxiliary camera, etc. [0003] The principle of designing a vehicle-mounted lens to meet the harsh working environment i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/064C03C4/00G02B1/00
CPCC03C3/064C03C4/00G02B1/00
Inventor 蔡冬雪
Owner CDGM OPTICAL GLASS
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