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Ceiling reflection resistant projection screen and projection system

A projection screen and ceiling technology, applied in optics, instruments, projection devices, etc., can solve problems such as poor definition of projection screens

Pending Publication Date: 2022-05-27
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an anti-ceiling reflection projection screen, which is used to solve the problem of poor definition of projection screens in the prior art; the purpose of the present invention is also to provide a projection system using the above-mentioned anti-ceiling reflection projection screen

Method used

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  • Ceiling reflection resistant projection screen and projection system
  • Ceiling reflection resistant projection screen and projection system
  • Ceiling reflection resistant projection screen and projection system

Examples

Experimental program
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Effect test

Embodiment 1

[0045] In the field of ultra-short-focus laser projection display, in order to achieve better brightness and display effect, a projection screen including a Fresnel lens layer is generally selected and used with a projector. This projection screen is characterized by high gain and small viewing angle. And has a certain anti-environmental light effect. The projection screen in the prior art generally includes a surface layer, a diffusion layer, a Fresnel lens layer and a reflective layer that are arranged in sequence. It cannot be curled, and has great limitations during transportation and use; in addition, the diffusion layer realizes the diffusion of light through the diffusion particles distributed in the MS material, and the degree of diffusion is higher, and the higher the degree of diffusion of light, the clarity of the projection screen. the worse.

[0046] In view of the above reasons, the present invention provides an anti-ceiling reflection projection screen to impro...

Embodiment 2

[0065] The difference from Example 1 is that: Figure 4 As shown, the light-scattering layer 3 includes a base layer 12, and the base layer 12 is made of UV glue. Because the UV glue has elasticity, the base layer 12 can be curled, so that the light-scattering layer 3 can be curled. The side of the base layer 12 away from the first support layer 2 is provided with a plurality of long grooves 13, the long grooves 13 are linear grooves, and the long grooves 13 are semicircular grooves, that is, the long grooves 13 are intercepted by a plane perpendicular to its extending direction. The shape of the simulated cross-section is a semicircle, and in the longitudinal extension direction of the long groove 13, the size of the simulated cross-section is the same everywhere, and the long groove 13 is cut by a plane perpendicular to its extension direction. Located on the side of the arc away from the first support layer 2, the contour of the semicircular simulated cross-section graduall...

Embodiment 3

[0072] The difference from Example 1 is that: Figure 5 As shown, the light-scattering layer 3 is provided with two layers, both of which are located between the first support layer 2 and the second support layer 4, wherein one layer of the light-scattering layer 3 is attached to the first support layer 2, and the other layer is The light-scattering layer 3 is attached to the second support layer 4 , and the two light-scattering layers 3 are bonded and fixed by OCA glue. After the two light-scattering layers 3 are glued and fixed, the elongated protrusions of the two light-scattering layers 3 together form a plurality of cavities for accommodating air.

[0073] It should be noted that the extending directions of the elongated protrusions of the two astigmatism layers 3 in the present embodiment 3 are perpendicular to each other, specifically: each elongated protrusion in the astigmatism layer 3 attached to the first support layer 2 along the Extending in the vertical directio...

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Abstract

The invention discloses a ceiling reflection resistant projection screen and a projection system, relates to the technical field of projection screens, and is used for solving the problem of poor definition of a projection screen in the prior art. The projection system comprises a projector and an anti-ceiling reflection projection screen, wherein the anti-ceiling reflection projection screen comprises a surface layer, a diffusion layer, a Fresnel lens layer and a reflection layer which are sequentially stacked and arranged; the haze value of the surface, away from the diffusion layer, of the surface layer is greater than or equal to 20%; the diffusion layer comprises a light diffusion layer and two supporting layers, the light diffusion layer is arranged between the two supporting layers, the light diffusion layer is provided with a light transmitting face used for diffusing light, the light transmitting face is provided with a gradually-shrinking part and / or a gradually-expanding part in the direction away from the surface layer, and a cavity used for containing air is defined by the gradually-shrinking part and / or the gradually-expanding part and the supporting layers.

Description

technical field [0001] The invention relates to the technical field of projection screens, in particular to an anti-ceiling reflection projection screen and a projection system. Background technique [0002] In the field of projection display, especially in the field of ultra-short-focus laser projection display, in order to achieve better brightness and display effect, projectors are generally used with projection screens with Fresnel microstructures. [0003] The above-mentioned projection screen generally includes a surface layer, a diffusion layer, a Fresnel lens layer and a reflective layer that are stacked in sequence. The surface of the diffusion layer is mirror-reflected and imaged on the ceiling. The diffusion layer includes a base material layer formed of MS (methyl methacrylate-styrene copolymer) material, which is distributed in the base material layer. There are diffusion particles PMMA (Polymethyl Methacrylate, polymethyl methacrylate), the diffusion particles...

Claims

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Application Information

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IPC IPC(8): G03B21/602G03B21/60G03B21/58
CPCG03B21/602G03B21/60G03B21/58
Inventor 练飞冯宇侯蕊
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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