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High-contrast reflective screen

A technology for reflecting screens and screens, applied in optics, instruments, projection devices, etc., can solve the problems of signal light interference, screen reflection, and complex screen technology, so as to improve screen contrast and scattering uniformity, reduce screen costs, and reduce screen costs. The effect of craft difficulty

Inactive Publication Date: 2019-12-10
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, a projection system has been developed that realizes projection on a large screen exceeding 100 inches when the distance between the projector and the screen is 50 cm. This projection system can overcome the limitation of installation space, but when the projection system is installed in such as a bright In an environment where there is a lot of stray light, such as a living room, the image display on the projection screen usually has the following problems: the screen will reflect the ambient light, which will cause interference to the signal light, so it is difficult to obtain a good contrast
There are very few reflective screens that combine the screen's ability to absorb ambient light and diffuse light. The general method is to set a dark light-absorbing layer and a layer of diffusing particles. The resulting screen is complex in process and high in cost. poor effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] figure 1 is a schematic sectional view showing the structure of the screen according to Embodiment 1 of the present invention;

[0044] figure 2 is a schematic diagram showing a specific structure of the reflective layer of the screen according to Embodiment 1 of the present invention.

[0045] figure 1 The projection screen shown is a high-contrast, light-resistant projection screen comprising a sequentially stacked diffuser layer 101, a polyethylene terephthalate (PET) base layer 102, a Fresnel structure layer 103, a reflective layer 104, and The light-absorbing layer 105 , projection light is incident from the side of the diffusion layer 101 , and passes through the diffusion layer 101 , the PET base layer 102 , the Fresnel structure layer 103 , the reflective layer 104 and the light-absorbing layer 105 in sequence.

[0046] The role of the diffusion layer 101 is to provide a scattering structure in the screen to produce uniform light and eliminate glare. Specif...

Embodiment 2

[0058] image 3 is a schematic sectional view showing the structure of a screen according to Embodiment 2 of the present invention.

[0059] Such as image 3 As shown, the high-contrast anti-light projection screen in this embodiment includes a PET base layer 201, a Fresnel structure layer 202, a reflective layer 203 and a light-absorbing layer 204 stacked in sequence, wherein the PET base layer 201, the Fresnel structure layer 204 in this embodiment The Snel structure layer 202, reflective layer 203 and light absorbing layer 204 are basically the same as the PET base layer 102, Fresnel structure layer 103, reflective layer 104 and light absorbing layer 105 in Embodiment 1, the difference is that in this embodiment The diffusion layer 101 is not provided, but the side of the PET base layer 201 facing the viewer is provided with a surface diffusion structure, so as to diffuse light. Other aspects of this embodiment are the same as those of Embodiment 1 above, so no repeated d...

Embodiment 3

[0062] Such as Figure 4 As shown, the high-contrast anti-light projection screen in this embodiment includes a reflective layer 301, a Fresnel structure layer 302 and a PET base layer 303 stacked in sequence, wherein the reflective layer 301, the Fresnel structure layer 302 and the PET base layer 303 It is the same as the reflective layer 104, the Fresnel structure layer 103 and the PET base layer 102 in Embodiment 1, the difference is that in this embodiment, the diffusion layer 101 and the light absorption layer 105 are not provided, and the reflective layer 301 is added The particles are scattered, and projection light is incident from the reflective layer 301 side. In this case, the projection light incident on the reflective layer 301 is directly reflected by the reflective layer 301 without passing through the PET base layer 303 , so that ghost images can be avoided. In addition, as in the above-mentioned embodiment 1 and embodiment 2, the effective reflectance of the ...

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Abstract

The invention provides a novel reflective screen. The screen comprises a support layer and a reflective layer which are stacked in sequence, The reflective layer is composed of a reflective part and an adjusting part. The adjusting part is used for adjusting the reflectivity of the reflective layer so that the reflectivity of the reflective layer is enabled to be 10%-50%. According to the reflective screen, the effective reflectivity of the reflective layer is reduced by reducing the duty ratio of the reflective layer so that the high contrast effect can be achieved without additionally addingthe light absorbing layer for absorbing ambient light, and the process difficulty and the screen cost can be reduced.

Description

technical field [0001] The invention relates to a high-contrast reflective screen, in particular to a high-contrast reflective screen with simple structure and low cost. Background technique [0002] In recent years, a projection system has been developed that realizes large-screen projection over 100 inches when the distance between the projector and the screen is 50 cm. This projection system can overcome the limitation of installation space, but when the projection system is installed in a place such as a bright In an environment with a lot of stray light, such as a living room, the image display on the projection screen usually has the following problems: the screen will reflect the ambient light, which will cause interference to the signal light, so it is difficult to obtain a good contrast. To solve this problem, the general method is to add a layer of dark light-absorbing layer to absorb the ambient light, but for the screen with prism structure, the existing method i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/60
CPCG03B21/60G03B21/56
Inventor 胡飞张红秀王霖
Owner APPOTRONICS CORP LTD
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