Light switching module

Abstract

The invention relates to a light switching module. The light switching module comprises a light polarizing assembly, a liquid crystal box and a scattering assembly, wherein the light polarizing assembly is used for converting incident light into polarized light; the liquid crystal box is arranged on the light polarizing assembly and comprises two transparent substrates and liquid crystal located between the two transparent substrates, and the liquid crystal box is used for regulating and controlling the direction of the polarized light; the scattering assembly is arranged on the liquid crystal box and comprises base material and double-refraction layers, the base material has a refraction rate, a plurality of micro light scattering structures are arranged on the surface of the base material, the arrangement direction of the micro light scattering structures is parallel to the direction of polarized light of the light polarizing assembly and perpendicular to the two-dimensional direction, the double-refraction layers are arranged on the multiple micro light scattering structures and have the abnormal light refraction rate parallel to the direction of optical axes of the double-refraction layers and the normal light refraction rate perpendicular to the direction of optical axes of the double-refraction layers, and the refraction rate of the base material is the same as one of the abnormal light refraction rate and the normal light refraction rate of the double-refraction layers. The light switching module solves the problem that in the prior art, dispersion of polymer dispersing-type liquid crystal in polymer base material is not even.

Description

technical field [0001] The present invention relates to a light switching module, and in particular to a light switching module designed by using the principle of light refraction, which can switch the passing light into a penetrating transparent state or a scattered fog state. Background technique [0002] With the development of smart glass and windows, the application of various light adjustment devices or light switching devices has increased. The technical principle of the traditional electronically controlled liquid crystal smart window is to sandwich polymer dispersed liquid crystal between two pieces of glass, and then use an external electric field to control the order or disorder of the liquid crystal arrangement direction, so as to adjust the state of light penetration. The so-called polymer-dispersed liquid crystal means that the liquid crystal droplets are evenly dispersed in the polymer substrate. However, this kind of smart window is likely to have the problem...

AI Technical Summary

Problems solved by technology

The technical principle of the traditional electronically controlled liquid crystal smart window is to sandwich polymer dispersed liquid crystal between two pieces of glass, and then use an external electric field to control the order or disorder of the liquid crystal arrangement direction, so as to adjust the state of light penetration. The so-called polymer-dispersed liquid crystal is to disperse liquid crystal droplets evenly in the polymer substrate. However, this kind of smart window is prone to the problem of uneven liquid crystal dispersion.

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