Projection screen for ultra-short focus projection system

Abstract

The present invention relates to the technical field of short-focus projection, and provides a projection screen for an ultra-short focus projection system. The projection screen comprises a substrate, a diffusion layer, a coloring Fresnel layer, a reflection layer and a light absorption layer which are arranged in order; the substrate is engineering plastics such as PET, PC, PMMA or PS. The reflection layer is made of metal materials such as aluminum or silver. Besides, a coloring layer and a Fresnel layer are combined to form a coloring Fresnel layer to omit the manufacturing of the coloringlayer while maintaining the projection screen color effect so as to optimize the projection screen structure, simplify the manufacturing process, improve the production efficiency and reduce the production cost.

Description

technical field [0001] The invention relates to the technical field of short-focus projection, in particular to a projection screen for an ultra-short-focus projection system. Background technique [0002] Such as figure 1 As shown, the structure of the existing ultra-short-throw front projection screen usually includes a substrate layer 5, a colored layer 4, a diffusion layer 3, a phenanthrene mirror layer 2, and a reflective layer and a light-absorbing layer arranged in sequence. Coloring is generally gray, light black, etc., which can greatly improve the contrast of projection display. [0003] The production sequence of the short-focus projection screen is substrate layer 5, colored layer 4, diffusion layer 3, phenanthrene layer 2, reflective layer, and light-absorbing layer. Specific steps: first apply a layer of UV glue (liquid, UV-curable glue) on the surface of the diffusion layer; then press the Fresnel texture surface of the mold 2 on the UV glue, and the UV glue...

AI Technical Summary

Problems solved by technology

[0004] Since the coloring layer is generally gray-black, it will greatly reduce the energy of ultraviolet light 6, resulting in poor curing efficiency of UV glue and longer curing time.

At the same time, UV glue cannot achieve deep curing, so it is necessary to use ultraviolet light 6 to cure again after the mold and the substrate are separated to achieve the purpose of deep curing

Twice irradiating ultraviolet light 6 increases the process and increases the manufacturing cost

[0005] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

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