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Light filtering type dimming sheet and preparation method thereof

A technology of optical filter and dimmer, applied in the field of dimmer, can solve the problem of controlling high-purity body scattered light without emphasizing surface scattering interference, not realizing the advantages of high-purity body scattering control mode, and not having scattering control etc., to achieve the effects of reducing the proportion of stray light, smoothing the distribution curve, and softly changing the light intensity

Active Publication Date: 2020-07-21
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this kind of optics does not have scattering controllability
[0006] (4) Conventional volume scattering coatings, in the existing technical solutions, do not emphasize the control of surface scattering interference to obtain high-purity volume scattering light, and also Unaware of the advantages of high-purity volume-scattering control methods

Method used

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  • Light filtering type dimming sheet and preparation method thereof
  • Light filtering type dimming sheet and preparation method thereof
  • Light filtering type dimming sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0203] Such as Figure 15 As shown, the filter-type dimmer provided by the present invention includes a light-adjusting layer 1 and a filter 3, the filter includes a filter layer 2 and a base 0, and the light-adjusting layer 1 and the filter layer 2 are placed on the base 0 On the two surfaces of the filter, the filter is an infrared cut-off film, and the thickness H is 0.15mm. The filter includes a light-incoming surface 301 and a light-emitting surface 302. The filter layer type 2A is multi-layer coating, pigment coating or dye coating One of them, the thickness T of the dimming layer is 50 μm, the dimming layer includes a propagation medium 1A and a light scattering agent 1B, a light incident surface 101, a light exit surface 102, and 1B are uniformly dispersed in 1A to form a volume scattering system, and input light 01 It emits from the light emitting surface 00 of the input light source, passes through the light incident surface 301 and the light exit surface 302 of the ...

Embodiment 2

[0205] As in the filter-type dimmer provided in Embodiment 1, the directions of the input light 01 and the output light 02 are reciprocal.

Embodiment 3-15

[0207] For the filter-type dimmer provided in Example 1, the filter is an infrared cut-off film, the thickness H is 0.15mm, the roughness of the light incident surface 301 and the light exit surface 302 of the filter is Ra<0.05μm, and the substrate It is a glass substrate, and the material 0A is silicate glass. The other parameters are listed in Table 3.

[0208] In fact, for the same control method of input light and output light, the combination of the propagation medium and the light scattering agent in the dispersion is not limited to the above-mentioned embodiments, and can be made according to the optical properties (refractive coefficient, extinction coefficient) of the propagation medium and the light scattering agent. Various changes, such as corresponding changes in coating thickness, filling rate, particle size distribution, etc. For the same embodiment, the control combination of input light and output light is not limited to the above embodiment, and different con...

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Abstract

The invention relates to a dimming sheet based on volume scattering, in particular to a light filtering type dimming sheet based on high-purity volume scattering and a preparation method thereof. In order to realize regulation and control of input light, the invention provides a light filtering type dimming sheet and a preparation method thereof. The light filtering type dimming sheet is composedof a dimming layer and a light filter. The light filter comprises a light filtering layer and a substrate. The dimming layer and the light filtering layer are arranged on the two surfaces of the substrate respectively. The dimming layer is composed of a propagation medium and a light scattering agent. The upper outer surface, the lower outer surface and interfaces of all layers of the light filtering type dimming sheet are very flat and smooth, and stray light scattered by the surfaces of all the layers of the light filtering type dimming sheet is reduced. The light filtering type light dimming sheet can regulate and control output light, enables transmitted output light to meet a specific distribution form, be more more suitable for human eyes or lenses to watch and serve as a new input light source for secondary utilization, and enables the transmitted output light to meet specific wavelength composition and be particularly suitable for serving as a signal source of an optical systemfor reception and analysis.

Description

technical field [0001] The invention relates to a volume scattering-based dimmer, in particular to a high-purity volume-scattering-based filter type dimmer and a preparation method thereof. Background technique [0002] Traditional optical films have specific optical coatings, but none of them can produce high-purity volume scattering, such as: [0003] (1) Diffusion particle layer, using light to generate multiple refractions and reflections on the surface and interior of the diffusion particles to produce diffusion on a geometrical optical scale, using the geometric shape of the diffusion particles exposed above the glue layer to generate sufficient refractive index difference with the air to expand The optical bending range strengthens the diffusion effect, such as diffusion, atomization, anti-glare and so on. This kind of optical coating has a certain volume scattering because the particles are partially buried in the glue layer, but has strong surface scattering. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02B5/20
CPCG02B5/0242G02B5/0268G02B5/0278G02B5/0294G02B5/20
Inventor 李刚夏寅薛永富缪锴付坤刘志鹏唐海江张彦
Owner NINGBO EXCITON TECH
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