Imaging material for fabricating rear-projection screen

A rear-projection screen and imaging technology, which is applied in optics, instruments, projection devices, etc., can solve the problems of unbalanced or balanced brightness and definition, uneven subtitle screen brightness, and affecting the quality of the audience, so as to suppress reflections and Shadow, suppression of sun spot effect, flexible and convenient construction

Active Publication Date: 2014-12-24
尹利勋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the refraction and reflection of the light in the rear projection equipment (generally one or more reflectors or lenses are added to the projection light path) part of the loss, and the rear projection screen itself absorbs part, resulting in the current rear projection screens generally have image defects. Important problems such as clarity and uneven brightness of the subtitle screen have affected the quality of viewing by the audience
Especially the biggest disadvantage of the general rear projection screen: the center brightness is high, and the sun effect appears in the center of the screen. At present, even the center brightness and edge brightness uniformity of the more advanced optical projection lens are about 25% different.
However, none of these screens can achieve good unity or balance of contrast, brightness and clarity, and the display effect is not as good as that of Fresnel lens screens.
[0006] Because the existing rear projection screens have the above-mentioned many defects such as brightness, viewing angle, clarity and price, however, in many fields requiring large-scale screens, such as academic exchanges, school teaching, public information release, outdoor advertising, etc. etc., the rear projection screen plays an irreplaceable role

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Recipe 1:

[0078] 40 parts of ester thinner;

[0079] 60 parts alkyd resin clear varnish;

[0080] 10 parts of aliphatic amine curing agent;

[0081] 10 parts of polymethylhydrosiloxane Poly(methylhydrosiloxane) pellets, the average particle diameter is 100-350 nanometers;

[0082] 30 parts of silica polymer matting powder;

[0083] 5 parts of black carbon-free pigment;

[0084] 20 metallic paints;

[0085] 5 parts barium zinc liquid light stabilizer;

[0086] 10 parts of bisfumarate inorganic flame retardants;

[0087] 0.2 parts of 2,6-di-tert-butyl-4-methylphenol antioxidant.

[0088] Rear projection screen production method:

[0089] (1) The raw materials are mixed evenly and poured into the watering can of the spray gun;

[0090] (2) Spray on the plane attachment, and the number of sprays is 3 times;

[0091] (3) After the sprayed material is dried, a layer of film is formed on the attachment, and the final thickness of the film is 0.05mm.

[0092] The f...

Embodiment 2

[0094] Recipe 1:

[0095] 80 parts of ether diluent;

[0096] 30 parts epoxy resin clear varnish;

[0097] 50 parts of aromatic amine curing agent;

[0098] 30 parts of polymethylhydrosiloxane Poly(methylhydrosiloxane) pellets, the average particle diameter is 100-350 nanometers;

[0099] 10 parts of silica polymer matting powder;

[0100] 30 parts coloring pigments;

[0101] 5 parts silver dust;

[0102] 15 parts barium zinc liquid light stabilizer;

[0103] 5 parts of bisfumarate inorganic flame retardants;

[0104] 3 parts of 2,6-di-tert-butyl-4-methylphenol antioxidant.

[0105] Rear projection screen production method:

[0106] (1) The raw materials are mixed evenly and poured into the watering can of the spray gun;

[0107] (2) Spray on curved surfaces or spherical attachments, the number of sprays is 20 times;

[0108] (3) After the sprayed material is dried, a layer of film is formed on the attachment, and the final thickness of the film is 3mm.

[0109] The...

Embodiment 3

[0111] 60 parts of aromatic hydrocarbon diluent;

[0112] 45 parts alkyd resin clear varnish;

[0113] 30 parts of amidoamine curing agent;

[0114] 20 parts of polymethylhydrosiloxane Poly(methylhydrosiloxane) pellets, the average particle diameter is 150-230 nanometers;

[0115] 20 parts of silica polymer matting powder;

[0116] 15 parts of black carbon-free pigment;

[0117] 10 silver dust;

[0118] 10 parts barium zinc liquid light stabilizer;

[0119] 6 parts of bisfumarate inorganic flame retardant;

[0120] 1 part 2,6-di-tert-butyl-4-methylphenol antioxidant.

[0121] Rear projection screen production method:

[0122] (1) The raw materials are mixed evenly and poured into the watering can of the spray gun;

[0123] (2) Spray on the plane attachment, and the number of sprays is 10 times;

[0124] (3) After the sprayed material is dried, a layer of film is formed on the attachment, and the final thickness of the film is 0.8mm.

[0125] The formula and method ar...

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Abstract

The invention provides an imaging material for fabricating a rear-projection screen, which comprises 40-80 parts of diluent, 30-60 parts of transparent varnish, 10-50 parts of a curing agent, 10-30 parts of optical microparticles, 10-30 parts of a matting agent, 5-30 parts of pigment, 5-20 parts of aluminum powders or metallic paint, 5-15 parts of light stabilizer, 5-10 parts of inorganic flame retardant and 0.2-3 parts of antioxidant. The invention also provides a method for fabricating the rear-projection screen, which comprises the following steps: (1) the imaging material is mixed uniformly and poured into a watering pot of a spray gun; (2) transparent or semitransparent plane, curve or sphere attachment is sprayed with the imaging material; and (3) a film is formed, and the final thickness of the film is 0.05mm-3mm. The imaging material and the method provided by the invention can effectively improve display brightness, visual angle and definition of the existing rear-projection screen, improve the maximum size of the rear-projection screen, and meanwhile reduce the fabricating cost of the rear-projection screen.

Description

technical field [0001] The invention relates to the technical field of projection screen manufacture and imaging, in particular to a rear projection screen, an imaging material used for manufacturing the rear projection screen, and a method for manufacturing the rear projection screen. Background technique [0002] At present, common large-screen video display devices have the following types: large-screen TVs, TV curtain walls, LED electronic display screens, plasma display devices (PDPs) and projection screens. However, large-screen TVs, TV curtain walls, LED electronic display screens, plasma display devices (PDPs) and other manufacturing processes are complex and costly, and in addition to bulky and heavy, it is more and more difficult to develop in large-screen video displays. The structure of the projection screen is the lightest, the most convenient to use, and the price is low, so it has become the fastest-growing and most widely used equipment in large-screen video ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/56G03B21/60
Inventor 尹利勋
Owner 尹利勋
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