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Optical coating for projection screen

An optical coating, projection screen technology, applied in optics, polyether coatings, polyester coatings, etc., can solve the problems of environmental pollution, threat to the health of workers, difficult to obtain display effects, etc., achieve image color saturation, improve contrast, The effect of reducing gas pollution

Active Publication Date: 2020-08-07
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The light-curing coatings on the market are generally oily systems. In order to dissolve the film-forming substances in the coatings, a large amount of organic solvents are required. These organic solvents will volatilize into the air during the film-forming process of the coatings and emit volatile organic compounds ( VOC), which seriously threatens the health of workers and pollutes the environment
In addition, there are very few types of light-curing coating products at present, and their optical effects cannot meet the increasingly demanding projection requirements, and it is difficult to obtain satisfactory display effects

Method used

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  • Optical coating for projection screen
  • Optical coating for projection screen
  • Optical coating for projection screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In this embodiment, the specific composition and usage ratio of each component of the projection screen optical coating are:

[0056]

[0057]

[0058] A preparation method of the projection screen optical coating of this embodiment is introduced below, and the preparation method includes the following steps:

[0059] S11: uniformly mixing 1 / 2 of the total weight of the acrylate oligomer with the light-absorbing material to form a first solution;

[0060] S12: Add 1 / 2 total weight of acrylate oligomer, aluminum silver powder, diluent, photoinitiator, cosolvent, wetting and dispersing agent, anti-sedimentation thixotropic agent, leveling agent and Mix well after the defoamer.

[0061] In the above S11, the acrylate oligomer and the light-absorbing material may be uniformly mixed by grinding or by high-speed shear stirring. Preferably, the stirring speed is 2000-3000r / min. The purpose of adding the acrylate oligomer twice is to make the acrylate oligomer mix evenl...

Embodiment 2

[0068] In this embodiment, the specific composition and usage ratio of each component of the projection screen optical coating are:

[0069]

[0070] The projection screen optical coating described in this embodiment can be prepared by the preparation method described in Embodiment 1, which will not be repeated here.

[0071] The components in this example are mixed to prepare an optical coating for a projection screen, which is used to produce a Fresnel microstructured optical screen. The achievable effects are: contrast ratio 8.5, center gain 0.95.

Embodiment 3

[0073] In this embodiment, the specific composition and usage ratio of each component of the projection screen optical coating are:

[0074]

[0075] The projection screen optical coating described in this embodiment can be prepared by the preparation method described in Embodiment 1, which will not be repeated here.

[0076]The components in this example are mixed to prepare an optical coating for a projection screen, which is used to produce a Fresnel microstructured optical screen. The achievable effects are: contrast ratio 9.5, center gain 1.0.

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Abstract

The invention provides an optical coating for a projection screen. The optical coating comprises the following components in parts by weight: 2-15 parts of a light absorption material, 5-20 parts of aluminum silver powder, 20-60 parts of an acrylate oligomer, 10-45 parts of a diluent, 0.5-15 parts of a photoinitiator and 0.1-6 parts of an auxiliary agent, wherein the light absorption material is one or more selected from a group consisting of carbon black, lamp black, iron black and aniline black, the average particle size of the light absorption material is 20-2000 nm, the aluminum silver powder is in a sheet shape, and the average particle size of the aluminum silver powder is 3-10 [mu]m. A film-forming substance in the optical coating for the projection screen can be dissolved without using a volatile organic solvent, and is cured by adopting a photocuring process, so no volatile organic compound is discharged, and gas pollution can be greatly reduced; directional high reflectivityof the screen is achieved through directional arrangement of the aluminum silver powder, and then a high-gain effect is achieved; and the contrast ratio of the screen is improved through addition of the light absorption material, and an image color is more saturated and brighter.

Description

technical field [0001] The invention relates to an optical coating for a projection screen, which belongs to the technical field of screen manufacturing. Background technique [0002] With the continuous development of laser projection technology, laser TV has been widely concerned and recognized by consumers due to its advantages of small size, large projection area and low cost, and the market has been expanding year by year. Although the luminous flux of laser TV can reach a very high level at present, under the influence of ambient light, the projection picture is still not as clear and bright as traditional TV. [0003] In order to improve the contrast of laser projection images and produce images with rich colors and rich tones, laser TVs need to be equipped with screens with anti-ambient light effects. At present, there are many screens with anti-light or light-absorbing effects on the market, and the anti-light or light-absorbing effects can be obtained through spec...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D167/06C09D171/02C09D163/10C09D5/32C09D7/65C09D7/61
CPCC09D175/14C09D167/06C09D171/02C09D163/10C09D5/32C09D7/65C09D7/61C09D7/69C08L2205/035C08K2003/0812C08K2003/0806C08L67/06C08L71/02C08L63/10C08L77/00C08L1/14C08K13/02C08K3/04C08K3/08C09D133/04G03B21/56C09D7/00C09D175/16C08F290/067C09D151/08C08F222/102C09J175/16G03B21/625G03B21/62G03B21/10
Inventor 崔可建胡飞李屹
Owner APPOTRONICS CORP LTD
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