AR glass with ultraviolet-proof function, and production process thereof

Abstract

The invention discloses AR glass with an ultraviolet-proof function. The AR glass comprises a glass substrate, wherein a first niobium oxide layer, a first silicon dioxide layer, a second niobium oxide layer, a second silicon dioxide layer and a first carbon nitride layer are sequentially plated on the front surface of the glass substrate from inside to outside, and a third niobium oxide layer, athird silicon dioxide layer, a fourth niobium oxide layer, a fourth silicon dioxide layer and a second carbon nitride layer are sequentially plated on the back surface of the glass substrate from inside to outside. According to the invention, Nb2O5, SiO2 and a carbon nitride material form a double-sided five-layer film system structure, and one-sided film coating is completed at one time by usingcontinuous film coating line, so that an AR glass structure with low film thickness and low material cost is obtained; and compared with the prior art, the AR glass of the invention has the characteristics of high hardness, scratch resistance, ultraviolet resistance, permeability increase, antireflection performance and the like.

Description

technical field [0001] The invention relates to AR glass, in particular to an AR glass with an ultraviolet protection function and a production process thereof. Background technique [0002] In the prior art, ultraviolet light belongs to invisible light, and its wavelength ranges from 100 to 400 nm. It is called ultraviolet light because it is outside purple light in the spectrum. It is divided into 320-400nm long-wave ultraviolet (UVA) / 280-320nm medium-wave ultraviolet (UVB) / 200-280nm short-wave ultraviolet (UVC) / 100-200nm (UVD) vacuum ultraviolet. Blocked and absorbed by the ozone layer, it has very weak penetration to glass, but it is widely used in the ultraviolet rays of artificial electronic appliances. Ultraviolet long-wave and some medium-wave ultraviolet rays have strong penetrating power. More than 95% of ultraviolet rays can pass through the ozone layer to reach the surface of the earth, and can also penetrate ordinary transparent glass and plastic. According to...

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Problems solved by technology

[0004] The existing anti-ultraviolet glass processing products, the body of the anti-ultraviolet glass melted with metal oxides in the glass is colored, and the glass is light yellow or green through the glass. Generally, it is only used for building doors and windows and home decoration; Ultraviolet glass can be applied to automobile glass, home decoration, and construction, but due to the easy aging of coatings and films, the service life is not long and needs to be replaced frequently; the Key Research Laboratory of Special Glass of Hainan University adopts coating methods to block ultraviolet rays and anti-static Glass, use TIO2 single-layer coating or TIO2 / SnO2: F composite film layer to study UV-resistant coating glass, the UV reflectance reaches 50%, but this kind of oxide film is a semiconductor material, and the transmittance is not high, as a display panel not suitable for use

Band-pass filter film and UV cut-off film, the thickness of the film layer is about 4900nm. Due to the limitation of the target position, the continuous box coating line needs to be divided into several times to debug and superimpose the film layer. The film thickness cannot be precisely controlled, so it is not suitable for plating such products. It can only be coated with a single-box coating machine with a rotating method, and the efficiency is low

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