Double-faced antireflection colourless hard glass and preparation method thereof
A hard glass, anti-reflection technology, applied in the direction of coating, can solve the problems of low glass transmittance, poor functionality, many defective products, etc., to achieve increased anti-reflection effect, small impact, high scratch resistance and The effect of friction resistance
Pending Publication Date: 2017-11-03
YICHANG NANBO DISPLAY
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a double-sided anti-reflection colorless hard glass and its preparation method, which can solve the problem of poor functionality caused by the low transmittance of the glass in the visible light range of 430nm~700nm; The problem of many defective products due to poor hardness of the product during the manufacturing process
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Embodiment 1
[0023] Such as figure 1 As shown, a double-sided anti-reflection colorless hard glass includes a glass substrate 1, and the two sides of the glass substrate are provided with high-refractive-index layers 2 and low-refractive-index layers. Layer set hard layer 4.
[0024] Further, the high refractive index layer is Nb 2 o 5 、Si 3 N 4 、TiO 2 or Ta 2 o 5 , preferably Nb2O5, relative to choosing Si 3 N 4 、TiO 2 or Ta 2 o 5 , which can produce better anti-reflection effect on the whole band when designing the film system, and compared with Si 3 N 4 、TiO 2 or Ta 2 o 5 , in the process of actual film system design, there will be small reflection difference in different wave bands.
[0025] The low refractive index layer is SiO 2 , SiO x N y or MgF 2 , preferably SiO2, which has a higher binding force than other materials, which is beneficial to the monitoring of film performance.
[0026] The hard layer is SiC, because the SiC material has high hardness and good...
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Abstract
The invention discloses double-faced antireflection colourless hard glass and a preparation method thereof. The double-faced antireflection colourless hard glass comprises a glass substrate, wherein two sides of the glass substrate are provided with films with alternately and circularly arranged high-refraction-rate layers and low-refraction-rate layers, and hard layers are arranged on outermost layers. By adopting the structure arrangement, an antireflection effect is achived for whole visible light wave bands of 400nm to 700nm; furthermore, the antireflection effect is as follows: an average refraction rate can be lowered to be 1.3 percent or lower, average transmittance can reach 97.5 percent or higher, and the glass can meet the needs of high-end elaborate optical instruments; finally, the surface hardness of the glass can be 6 or above in Moh's hardness and 9h or above in pencil hardness, and higher scratch resistance and friction resistance are both achieved.
Description
technical field [0001] The invention relates to the field of anti-reflection glass, in particular to a double-sided anti-reflection colorless hard glass and a preparation method thereof. Background technique [0002] At present, smart devices generally require anti-reflection film in the window glass area. Reflection on the surface of optical parts not only affects the light transmission energy of optical parts, but also the reflected light will form astigmatism in the instrument and affect the imaging quality of optical instruments. In order to solve these problems, anti-reflection coatings are usually coated on the surface of optical parts for the purpose of In order to reduce the reflected light of the part. [0003] The traditional anti-reflection film only plays an anti-reflection role in a specific band, but does not make the entire visible light band play an anti-reflection role; moreover, the traditional anti-reflection film has poor anti-friction and anti-scratch a...
Claims
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IPC IPC(8): C03C17/34
CPCC03C17/3435C03C17/3441C03C17/3452C03C2217/734C03C2217/78C03C2218/156
Inventor 陈多方凤军何建军洪蒙江涛
Owner YICHANG NANBO DISPLAY