Near-infrared light-absorbing glass, glass products, components and filters
A near-infrared light and glass technology, applied in the fields of components and filters, glass products, and glass, can solve problems such as high volatility, human and environmental damage, and achieve low thermal expansion coefficient, excellent bending strength, and excellent near-infrared light. The effect of absorption properties
Active Publication Date: 2022-02-01
CDGM OPTICAL GLASS
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Problems solved by technology
[0004] The fluorophosphate optical glasses disclosed by CN1927751A and CN1944302A all contain a large amount of F, and the volatilization of F itself is relatively large, and the gas generated by decomposition of other glass raw materials such as nitrate, carbonate, etc. in the melting process is more likely to increase the volatilization of F , so it is easy to cause harm to human body and environment
Method used
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[0115]
[0116] In order to further clearly illustrate and illustrate the technical solution of the present invention, the following non-limiting examples are provided.
[0117] In this example, the glass having the compositions shown in Table 1 to Table 3 was obtained by using the above-mentioned manufacturing method of near-infrared light-absorbing 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 3.
[0118] Table 1
[0119]
[0120]
[0121] Table 2
[0122]
[0123]
[0124] table 3
[0125]
[0126]
[0127] The near-infrared light-absorbing glass made by the embodiments described in the above Tables 1 to 3 is processed into a glass sheet with a thickness of 0.11 mm, and the spectral transmittance of each embodiment glass is measured according to the test method described above. The results are shown in Table 4 to Table 6 below. ...
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Abstract
The invention provides a kind of near-infrared light absorbing glass, whose components are represented by weight percent and contain P 2 o 5 、Al 2 o 3 , CuO, Rn 2 O, RO and 0~5% of V 2 o 5 Li 2 O / Rn 2 O is 0.3-1.0; BaO / MgO is 0.2-5.0; Li 2 O / CuO is 0.15~2.0; (Li 2 O+CuO) / P 2 o 5 0.1~0.6; 10×V 2 o 5 / Li 2 O is less than 6.0; RO / CuO is less than 2.0; the corresponding wavelength λ when the transmittance of 0.11mm thick glass reaches 50% 50 620~650nm, transmittance τ at 400nm 400 More than 72%, transmittance τ at 1100nm 1100 15% or less. The glass of the present invention achieves excellent near-infrared light absorption performance, low thermal expansion coefficient and excellent anti-devitrification performance under the thinner condition.
Description
technical field [0001] The invention relates to a near-infrared light-absorbing glass, in particular to a glass, a glass product, a component and an optical filter for a near-infrared light-absorbing filter suitable for color sensitivity correction. Background technique [0002] In recent years, the spectral sensitivity of semiconductor imaging elements such as CCD and CMOS used in digital cameras, camera phones, and VTR cameras has spread from the visible range to the near-infrared range around 1100nm, and filters that absorb light in the near-infrared range have been used. The device can obtain a degree of visual acuity similar to that of a human being. Therefore, the demand for filters for color sensitivity correction is increasing, which puts forward higher requirements for near-infrared light-absorbing functional glasses used to manufacture such filters, that is, such glasses are required to have Moreover, due to the application of near-infrared light-absorbing glass i...
Claims
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IPC IPC(8): C03C3/062C03C3/17C03C3/19C03C4/08G02B5/22
CPCC03C4/082C03C3/062C03C3/17C03C3/19G02B5/226
Inventor 孙伟
Owner CDGM OPTICAL GLASS