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Sensor dimming layer and preparation method thereof

A sensor and dimming technology, applied in optics, instruments, optical components, etc., can solve the problem of controlling high-purity bulk scattered light without realizing the advantages of high-purity bulk scattering control methods, without emphasizing surface scattering interference, and without scattering control. issues of sex

Inactive Publication Date: 2020-07-24
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
These are things that cannot be achieved with traditional diffusion membranes.

Method used

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  • Sensor dimming layer and preparation method thereof
  • Sensor dimming layer and preparation method thereof
  • Sensor dimming layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0157] Such as image 3 As shown, the dimming layer 1 provided by the present invention has a thickness T of 50 μm, contains a propagation medium 1A and a light scattering agent 1B, a light incident surface 101, a light output surface 102, and 1B are uniformly dispersed in 1A, forming a volume scattering system, and input light 01 It emits from the light-emitting surface 00 of the input light source, enters from the light-incident surface 101, and is controlled by the volume scattering of the dimming layer, and then emits from the light-emitting surface 102 to produce the final output light 02. Among them, 1A is the acrylic resin system in the light-curing polymer resin, and the light scattering agent 1B is the Al in the inorganic particle system 2 O 3 The particles are polydisperse, with a particle size of 0.5 to 1.5 µm, and the filling rate D'of the volume scattering system is 0.4. The light incident surface 101 and the light exit surface 102 are very flat and smooth, and the ...

Embodiment 2-15

[0173] Like the dimming layer 1 provided in Example 1, the parameters are listed in Table 3.

[0174] Table 3 Performance comparison of Examples 2-15 under collimated input light

[0175]

[0176]

[0177] Notes 1~3 are the same as Table 2

[0178] Comparing Examples 2-5, 6-8, 9-10, it can be seen that when other conditions remain unchanged and T increases, the volume scattering effect is strengthened, and Φ 2 As it becomes larger, the output light is getting closer and closer to the ideal Lambertian level. Comparing Examples 11-13, it can be seen that when other conditions remain unchanged and D'increases, the volume scattering effect is strengthened, and Φ 2 As it becomes larger, the output light is getting closer and closer to the ideal Lambertian level. Comparing Example 11 with Examples 14 and 15, it can be seen that when other conditions remain unchanged and D decreases, the particle concentration M increases, and the volume scattering effect is strengthened. 2 As it becomes l...

Embodiment 16-31

[0180] Like the dimming layer 1 provided in Example 1, the parameters are listed in Table 4.

[0181] Table 4 Performance comparison of Examples 16-31 under different forms of normal input light

[0182]

[0183]

[0184] Notes 1~3 are the same as Table 2

[0185] As shown in Table 4, comparing Examples 16-19, for a specific sensor dimming layer, when the normal direction collimated incident (Example 16), the output light Φ 2 When it is less than 120°, the ideal Lambertian level is not reached. At this time, as the input light Φ 1 Becomes larger, the volume scattering effect is still further strengthened, Φ 2 It becomes bigger and closer to the ideal Lambertian level. Comparing Examples 20-28, it can be seen that for a specific sensor dimming layer, when its D'is large enough and the optical properties of the light scattering agent and the propagation medium are properly matched, the light output after the normal collimated incidence (Example 20) Φ 2 It can be equal to 120°, that is...

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Abstract

The invention relates to a dimming layer based on volume scattering, and particularly relates to a sensor dimming layer and a preparation method thereof. In order to regulate and control input light and enable output light to meet the Lambert shape, the invention provides the sensor dimming layer and the preparation method thereof. The sensor dimming layer is provided with a light inlet surface and a light outlet surface; the dimming layer contains a light scattering agent, the light scattering agent is arranged between the light inlet surface and the light outlet surface of the dimming layer,and the filling rate D' of the light scattering agent in the dimming layer is 0.01-0.85. The dimming layer realizes standardized regulation and control of input light, so that output light meets theLambert shape, and the application level of a sensor is reached.

Description

Technical field [0001] The invention relates to a dimming layer based on volume scattering, in particular to a sensor dimming layer 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) The diffusion particle layer uses light to produce multiple refractions and reflections on the surface and interior of the diffusion particles to produce geometric optical-scale diffusion, and the geometric shape of the diffusion particles exposed above the glue layer is used to generate a sufficient refractive index difference with air to expand The range of optical tortuosity strengthens the diffusion effect, such as diffusion, atomization, anti-glare, etc. This kind of optical coating has certain volume scattering because the particles are partially buried in the glue layer, but it has strong surface scattering. [0004] (2) The micro-replication st...

Claims

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Application Information

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IPC IPC(8): G02B5/02
CPCG02B5/0221G02B5/0242G02B5/0294
Inventor 唐海江付坤夏寅王小凯薛永富刘恒旭钟林李刚张彦
Owner NINGBO EXCITON TECH
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