One-way light-transmitting glass and preparation method thereof

Abstract

The invention discloses a one-way light-transmitting glass, comprising: a glass substrate and a composite dielectric layer, an amorphous silicon layer, a first SiOx layer, a microcrystalline silicon layer, and a second SiOx layer sequentially stacked on one side of the glass substrate ; Wherein, the composite dielectric layer and the amorphous silicon layer form the first optical module, and the first SiOx layer, the microcrystalline silicon layer and the second SiOx layer form the second optical module; the preparation method of the one-way light-transmitting glass is: in the glass A composite dielectric layer is deposited on the substrate; an amorphous silicon layer is deposited on the composite dielectric layer by plasma-enhanced chemical vapor deposition; a first SiOx layer is deposited on the amorphous silicon layer by plasma-enhanced chemical vapor deposition; on the first SiOx layer Depositing a microcrystalline silicon layer; depositing a second SiOx layer on the microcrystalline silicon. The present invention utilizes the combination of different refractive indices and film thicknesses of the layers of the above-mentioned glass to form an asymmetric structural optical device, so that the two faces have different reflectances of light, thereby realizing one-way light transmission.

Description

technical field [0001] The invention relates to the field of optical glass, in particular to a one-way transparent glass and a preparation method thereof. Background technique [0002] One-way glass has a one-way perspective function and has important application value in some specific places. The one-way see-through glass in the prior art generally adopts a film-attached structure, and the one-way see-through effect of the glass is realized through this film-attached structure, but there are certain problems in this way of pasting the film, for example, the one-way film attached After friction, it is easy to be damaged, fall off and other defects. [0003] Another kind of one-way perspective glass in the prior art is to deposit a metal layer and other functional layer structures on the glass surface. Although this structure is simple, the metal layer of the one-way see-through glass is easy to detach from the glass surface. Especially in long-term use, the metal in the me...

AI Technical Summary

Problems solved by technology

Although this structure is simple, the metal layer of the one-way see-through glass is easy to detach from the glass surface. Especially in long-term use, the metal in the metal layer will be oxidized, which will directly cause the perspective of the one-way see-through glass to be reduced or even lost. The role of one-way perspective

In addition, the above-mentioned existing one-way see-through glass has a significant one-way light transmission effect only when there is a significant difference between the light sources on both sides. Therefore, there are certain limitations in practical application.

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