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Light turning film and method for controlling light transmission of light turning film

A light-turning and light-transmitting technology, applied in the optical field, can solve the problem of poor light utilization rate of the light-turning film, and achieve the effect of improving the utilization rate and avoiding pollution.

Active Publication Date: 2019-07-23
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a light turning film and a light transmittance control method of the light turning film to solve the problem of poor utilization of light passing through the light turning film in the prior art

Method used

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  • Light turning film and method for controlling light transmission of light turning film
  • Light turning film and method for controlling light transmission of light turning film
  • Light turning film and method for controlling light transmission of light turning film

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preparation example Construction

[0039] A film preparation method for preparing the above-mentioned light turning film may include: coating a UV curable resin on the first transparent conductive layer, providing a mold with a laminated film structure complementary to the prism structure, and using the mold to laminate the UV curable resin , and utilize ultraviolet light to irradiate the UV curable resin, and the UV curable resin formed with a prism structure is cured to form a prism layer with a prism structure; then, the polymer dispersed liquid crystal coating is coated on the surface of the first transparent conductive layer and cured, to form a polymer-dispersed liquid crystal layer; the second transparent conductive layer is disposed on the surface of the polymer-dispersed liquid crystal layer away from the first transparent conductive layer.

[0040] Preferably, the above preparation method may further include a step of attaching an adhesive layer on the surface of the polymer-dispersed liquid crystal la...

Embodiment 1

[0043] The light turning film provided in this embodiment includes a first transparent conductive layer, a prism layer, a polymer dispersed liquid crystal layer and a second transparent conductive layer stacked in sequence, and the surface of the prism layer away from the light-transmitting substrate layer has a prism structure.

[0044] Wherein, the material forming the first transparent conductive layer and the second transparent conductive layer is ITO, the material forming the prism layer is epoxy acrylic resin, and the polymer dispersed liquid crystal layer includes acrylic resin and liquid crystal material, and the number average molecular weight of liquid crystal material is 200, the content of the acrylic resin is 40%, and the content of the liquid crystal material is 60%.

Embodiment 2

[0046] The light turning film provided in this embodiment includes a first transparent conductive layer, a prism layer, a polymer dispersed liquid crystal layer and a second transparent conductive layer stacked in sequence, and the surface of the prism layer away from the light-transmitting substrate layer has a prism structure.

[0047] Wherein, the material forming the first transparent conductive layer and the second transparent conductive layer is ITO, the material forming the prism layer is epoxy acrylic resin, the number average molecular weight of the liquid crystal material is 300, and the content of the acrylic resin is 45%, The content of the liquid crystal material is 55%.

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Abstract

The invention provides a light steering membrane and a light transmittance control method thereof. The light steering membrane comprises a first transparent conductive layer and a prism layer arranged on the first transparent conductive layer. A prism structure is arranged on the surface of the side, far away from the first transparent conductive layer, of the prism layer. The prism structure is provided with a concave part. The light steering membrane also comprises a polymer dispersed liquid crystal layer and a second transparent conductive layer, the polymer dispersed liquid crystal layer is arranged on the surface of the side, far away from the first transparent conductive layer, of the prism layer, and the second transparent conductive layer is disposed on the surface, far away from the prism layer, of the polymer dispersed liquid crystal layer. The light steering membrane can be switched between a non-light-pervious membrane and a light-pervious membrane and meets requirements for light steering membranes in special places. The utilization rate of incident light passing the steering membrane can also be effectively increased. Besides, the polymer dispersed liquid crystal layer is arranged on the surface of the prism layer, so the prism structure of the prism layer is well protected, and pollution caused when the prism structure is directly exposed in air is avoided.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a light turning film and a method for regulating the light transmittance of the light turning film. Background technique [0002] In the prior art, various functional layers such as glass are arranged inside the building to reduce energy consumption in the building, thereby effectively utilizing sunlight to provide lighting inside the building. One technique for supplying light inside buildings such as offices is by providing turning films to deflect incoming sunlight. However, since sunlight enters the window at a downward angle, much of this light is not available for illuminating the room. [0003] The prism structure in the existing light turning film directly faces the air, which has the largest refractive index difference and the largest deflection angle, but this will cause the window glass to look foggy, because the light directly incident on the human eye through the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/04G02F1/1343
CPCG02B5/045G02F1/1343
Inventor 王必昌陈祥冲杨文勋
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL