Diffusion plate of multilayered diffusion particle layer

A technology of diffusion particles and diffusion plates, which is applied in the field of diffusion plates, can solve problems such as high cost and difficult processing, and achieve the effects of increasing brightness, uniformly diffusing light, and strong anti-ultraviolet absorption ability

Inactive Publication Date: 2011-08-10
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to meet the required lighting requirements, the secondary light distribution lens used in general light

Method used

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  • Diffusion plate of multilayered diffusion particle layer
  • Diffusion plate of multilayered diffusion particle layer
  • Diffusion plate of multilayered diffusion particle layer

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043] Such as figure 2 As shown, the present invention is a structural schematic diagram of Embodiment 1 of a diffusion plate with multiple diffusion particle layers. The light diffusing particles 31 are doped in the first diffusing particle layer 9a and the second diffusing particle layer 9b, and the transparent resin substrate layer 8 is sandwiched therein. The thicknesses of the transparent resin substrate intermediate layer 8 and the first diffusion particle layer 9 a and the second diffusion particle layer 9 b are all 1 mm. The doping amount of diffusion particles and ultraviolet absorber in each layer of diffusion particle layer accounted for 0.04% and 0.004% by weight of the current layer of diffusion particle layer respectively. There are a plurality of hemispherical structures 10 arranged in a rectangle on the upper surface of the diffusion plate, the radius of the spheres is 0.1 mm, and the distance between the centers of the spheres is 0.4 mm.

[0044] The middl...

Embodiment 2

[0046]The main difference between embodiment 2 and embodiment 1 is that the lower surface of the diffusion plate in embodiment 2 has a plurality of hemispherical structures 10 arranged in a rectangle, the radius of the spheres is 0.1 mm, and the distance between the centers of the spheres is 0.4 mm.

Embodiment 3

[0048] Such as image 3 Shown is a schematic structural view of another preferred embodiment 3 of the present invention. The main difference between embodiment 3 and embodiment 1 is that there are a plurality of hemispherical structures 10 arranged in a rectangle on the upper and lower surfaces of the diffusion plate in embodiment 3, the radius of the spheres is 0.1 mm, and the distance between the centers of the spheres is 0.4 mm.

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Abstract

A diffusion plate of a multilayered diffusion particle layer belongs to the field of diffusion plates. The diffusion plate comprises a diffusion particle layer, a middle layer made of a transparent resin substrate, and a diffusion particle layer, namely the diffusion plate is in a sandwich structure. The basal bodies of two diffusion particle layers are made of high molecular light transparent materials; and diffusion particles and an ultraviolet absorber are dispersed in both of the two diffusion particle layers. At least one outer surface of the diffusion plate disclosed by the invention has a microstructure, so as to improve the luminous efficacy and the diffusion efficacy. Simultaneously, in consideration of the wider application range of the diffusion plate, the middle layer of the transparent resin substrate is manufactured into various curved surface shapes.

Description

technical field [0001] The invention is a diffusion plate with a multi-layer diffusion particle layer, which can be used not only as a diffusion plate of a direct-type backlight module but also as a secondary light distribution lens for general lighting and the like. The multi-layer diffusion plate includes a layer of diffusion particles, an intermediate layer made of a transparent resin substrate, and a layer of diffusion particles, that is, a sandwich structure. The substrates of the two diffusion particle layers are made of high polymer light-transmitting material, and the diffusion particles and ultraviolet absorbers are dispersed in them. At least one outer surface of the diffusion plate of the present invention has a microstructure, and when different types of microstructures are provided, different light extraction efficiencies and uniformity of light extraction can be achieved. The transparent resin substrate has good light transmittance and sufficient mechanical prop...

Claims

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Application Information

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IPC IPC(8): G02B5/02B32B27/14
Inventor 吴大鸣何晓祥庄俭张亚军郑秀婷
Owner BEIJING UNIV OF CHEM TECH
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