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Double-sided dimming sheet and preparation method thereof

A dimming, double-sided technology, used in optics, optical components, instruments, etc., can solve the problem of controlling high-purity bulk scattered light without scattering control, without emphasizing surface scattering interference, and unaware of high-purity bulk scattering control. It can reduce the proportion of stray light, the distribution curve is smooth, and the light intensity changes softly.

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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  • Double-sided dimming sheet and preparation method thereof
  • Double-sided dimming sheet and preparation method thereof
  • Double-sided dimming sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0224] Such as Figure 15 As shown, the double-sided dimming sheet provided by the present invention includes a first dimming layer 11, a second dimming layer 21 and a substrate 10, and the first dimming layer 11 and the second dimming layer 21 are placed on both sides of the substrate 10. On one surface, the thickness H of the substrate is 0.05mm, the substrate includes a light incident surface 1001, a light exit surface 1002, the thickness T of the first light-adjusting layer and the second light-adjusting layer 1 , T 2Both are 25 μm. The first light-adjusting layer includes a propagation medium 11A and a light-scattering agent 11B. The light incident surface 1101, the light-emitting surface 1102, and 11B are uniformly dispersed in 11A to form a volume scattering system. The second light-adjusting layer includes a propagation medium 21A and a light scattering agent. Agent 21B, light-incident surface 2101, light-exit surface 2102, 21B are uniformly dispersed in 21A to form a...

Embodiment 2

[0226] For the double-sided dimming sheet provided in Example 1, the filling rate D' is 0.2, and the shape of the output light 02 is approximately egg-shaped, such as Figure 11c Shown in curve 083 / triangular as Figure 12c As shown in the middle curve 083, the beam angle Φ 2 =90°.

Embodiment 3-15

[0228] For the double-sided dimming sheet provided in Example 1, the thickness H of the substrate is 0.15 mm, the roughness Ra of the light incident surface 1001 and the light exit surface 1002 of the substrate is less than 0.05 μm, the substrate is a glass substrate, and the material 10A is silicic acid Salt glass, the other parameters are listed in table 3.

[0229] 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 differen...

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Abstract

The invention relates to a double-sided dimming sheet based on volume scattering, in particular to a double-sided 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 double-sided dimming sheet and a preparation method thereof. The double-sided dimming sheet is composed of a firstdimming layer, a second dimming layer and a substrate. The first dimming layer and the second dimming layer are arranged on the two surfaces of the substrate. The dimming layers are composed of a propagation medium and a light scattering agent, wherein the propagation medium is solid polymer resin, and the light scattering agent is light scattering particles. The light scattering agent is strictlydispersed in the propagation medium, and regulation and control light scattered by the double-sided dimming sheet body is increased. The upper outer surface, the lower outer surface and interfaces ofall layers of the double-sided dimming sheet body are very flat and smooth, and stray light scattered by the surfaces of all layers of the double-sided dimming sheet body is reduced. The double-sideddimming sheet can perform specific regulation and control on output light, so that transmitted output light meets a specific distribution form, and the output light is more suitable for human eyes and lenses to watch, is more suitable for being used as a new input light source for secondary utilization, and is particularly suitable for being used as a signal source of an optical system for reception and analysis.

Description

technical field [0001] The invention relates to a volume-scattering-based double-sided dimming sheet, in particular to a high-purity volume-scattering-based double-sided dimming sheet 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 stro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02B27/09
CPCG02B5/0242G02B5/0278G02B27/0927
Inventor 李刚夏寅薛永富周鼎汪诚付坤刘志鹏唐海江张彦
Owner NINGBO EXCITON TECH
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