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Projection screen and projection system

A projection screen and projection technology, which is applied in the field of projection systems, can solve the problems of increasing user cost, reducing space utilization, and the screen cannot be shared by long-focus projectors and ultra-short-focus projectors, so as to improve contrast and resist ambient light. The effect is good, and the effect of increasing the horizontal viewing angle

Active Publication Date: 2020-05-29
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As can be seen from the above, since the telephoto projector and the ultra-short-focus projector need screens with different optical structures, the screens in the prior art cannot be shared by the telephoto projector and the ultra-short-focus projector, which increases the use of cost, reduced space utilization

Method used

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  • Projection screen and projection system

Examples

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Effect test

no. 1 example

[0054] 1.1 Structure overview

[0055] image 3 is a schematic diagram showing the structure of the projection screen according to the first embodiment of the present invention. Such as image 3 As shown in , the projection screen 100 includes a light diffusing layer 10 , a substrate layer 20 , a reflective layer 30 and a light absorbing layer 40 arranged sequentially from the viewer side (ie, the incident side of projection light). The reflective layer 30 is provided with a plurality of microstructure units, and these microstructure units are arranged in a two-dimensional manner to form a microstructure unit array. The microstructure unit may be formed on the side of the substrate layer 20 facing away from the viewer by coating resin on the roll and UV curing process. In other words, the reflective layer 30 and the substrate layer 20 may be integrally formed. The light can pass through the light diffusing layer 10 and the substrate layer 20 in sequence to reach the reflec...

no. 2 example

[0110] The following will refer to Figure 21 to Figure 25 A projection screen according to a second embodiment of the present invention is explained.

[0111] Figure 21 is a perspective view showing a projection screen according to a second embodiment of the present invention. Such as Figure 21 As shown in , the projection screen 200 includes a light diffusing layer 10 , a substrate layer 20 , a reflective layer 30 and a light absorbing layer 40 arranged sequentially from the viewer side (ie, the incident side of projection light). The reflective layer 30 is provided with a plurality of microstructure units, and these microstructure units are arranged in a two-dimensional manner to form a microstructure unit array. The difference between the projection screen 200 of the second embodiment and the projection screen 100 of the first embodiment mainly lies in the specific structure of the reflective microstructure unit. Such as Figure 21 and Figure 22 As shown in , the ...

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Abstract

The invention discloses a projection screen and a projection system. The projection screen comprises a reflection layer and a light absorption layer which is used for absorbing light, wherein the reflection layer and the light absorption layer are sequentially arranged from the incident side of projection light; the reflection layer comprises a plurality of microstructure units; each microstructure unit comprises a first plane, a second plane, a third plane and a fourth plane, wherein the first plane and second plane face each other obliquely in a first direction, and the third plane and the fourth plane face each other obliquely in a second direction; the inclination angles of the first plane and the second plane relative to the screen plane of a projection screen are set such that at least a portion of projection light entering at a first angle of incidence within a first angle range is reflected at the first plane and second plane, and finally, enters the view field range of a viewer; and the inclination angles of the third plane and the fourth plane with respect to the screen plane of the projection screen are set such that at least a portion of the projection light entering ata second angle of incidence within a second angle range is reflected at the third plane and fourth plane and finally enters the viewer's field of view range; and the first angle of incidence is smaller than the second angle of incidence.

Description

technical field [0001] The present invention relates to projection screens and projection systems. In particular, the present invention relates to a projection screen with high contrast that can be applied to both a telephoto projector and an ultra-short throw projector and a projection system using the same. Background technique [0002] In recent years, with the continuous improvement of the brightness of projectors, the advantages of projection display systems in large-scale home theater applications have begun to emerge. Compared with LCD TVs and OLED TVs, the projection display system is small in size, easy to install, and can easily realize a display screen larger than 100 inches, and the price of the whole system is relatively low. [0003] According to different throw ratios, projectors can be divided into telephoto projectors and short-focus projectors. Traditional projectors are called telephoto projectors, which usually require a distance of more than 3 meters t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/60G02B5/02G02B5/124
CPCG03B21/60G02B5/0221G02B5/0226G02B5/124G03B21/602G02B5/003G02B2207/123G02B19/0019
Inventor 孙微王霖唐泽达胡飞李屹
Owner APPOTRONICS CORP LTD
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