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Projection screen and projection system

A projection screen and screen technology, applied in the field of projection display, can solve the problems of large-scale projection size limitation, influence on the flatness of hard screen, plate bulge, etc., and achieve the effect of high quality projection image

Active Publication Date: 2018-12-11
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the hard curtain is fixed with a whole back plate type fixing structure. On the one hand, the area of ​​the back support plate is relatively large. During processing, large-sized plates are prone to deformation such as bulges. At the same time, the optical screen is glued to the back plate. Uneven coating of the board will also cause unevenness of the bonding, which will affect the flatness of the entire hard screen. On the other hand, this back-plate fixing method also makes the weight of the entire screen very heavy, which is not easy to transport and suspension, which limit the enlargement of projection size

Method used

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  • Projection screen and projection system
  • Projection screen and projection system
  • Projection screen and projection system

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Experimental program
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Embodiment 1

[0038] image 3 It is a schematic diagram of the front structure of the projection screen provided by Embodiment 1 of the present invention. Figure 4 It is an exploded schematic diagram of the projection screen provided by Embodiment 1 of the present invention. Figure 5 It is a schematic cross-sectional view of the projection screen provided by Embodiment 1 of the present invention. Figure 6 It is a schematic diagram of a partial structure of the screen frame in the projection screen provided by Embodiment 1 of the present invention. Figure 7 It is a schematic diagram of the rear structure of the projection screen provided in Embodiment 1 of the present invention. Such as Figure 3-Figure 4 As shown, the projection screen provided by this embodiment specifically includes a hard screen board 1, a soft connecting cloth 2, a screen frame 3 surrounding the screen board 1, and a plurality of elastic tension members 4; the screen board The front of the screen panel 1 is the ...

Embodiment 2

[0068] Such as Figure 8-13 As shown, Embodiment 2 provides yet another projection screen structure.

[0069] Figure 10 is a schematic cross-sectional view of a projection screen structure provided in Embodiment 2 of the present invention, Figure 9 It is a partial cross-sectional schematic diagram of a projection screen structure provided by Embodiment 2 of the present invention. Such as Figure 9 As shown, in the screen frame 3, the outer support portion 31 has a support portion 312 parallel to the plane where the screen panel 1 is located. In order to strengthen the strength, the support portion 312 can be provided with a plurality of ribs 313 arranged at intervals, such as facing One side of the screen panel 1 is provided with ribs 313 that protrude toward the screen panel 1, and the heights of the ribs 313 are all equal, so that the tops of the plurality of ribs 313 can be supported together on the back side of the screen panel 1. The portion 312 performs structural ...

Embodiment 3

[0104] Embodiment 2 of the present invention also provides a projection system. The projection system provided in this embodiment specifically includes a projection device and the projection screen in Embodiment 1 above, and the projection device is used to project a projection picture onto a screen panel of the projection screen. Wherein, the specific structure, working principle and function of the projection screen have been described in detail in the first embodiment above, and will not be repeated here.

[0105] Specifically, in the projection system of this embodiment, the projection device may be various existing projectors, such as a laser projector. The projection device can project projection pictures to the screen board of the projection screen, so that the screen board can display the projection pictures for people to watch. Wherein, the screen panel in the projection screen can maintain a stretched state under the pulling force of the elastic tension member, has ...

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PUM

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Abstract

The invention provides a projection screen and a projection system. The projection screen of the invention comprises a hard screen plate, a soft connecting cloth, a screen frame arranged along the back of the screen plate and a plurality of elastic tension members. The front surface of the screen plate is a projection light receiving surface, and the back surface of the screen plate is bonded witha connecting cloth, and the connecting cloth covers the back surface of the screen plate and protrudes beyond at least one side edge of the back surface of the screen plate. A first end of each elastic tension member is connected to one side edge of the connecting cloth, and a second end is connected to the screen frame to stretch the connecting cloth and the screen plate to a flat state by the tensile force of the elastic tension member. The invention can fix the screen plate of the projection screen and at the same time make the screen plate have better flatness.

Description

technical field [0001] The invention relates to the field of projection display, in particular to a projection screen and a projection system. Background technique [0002] With the continuous development of science and technology, projection display systems are more and more used in people's work and life. [0003] Laser projection has gradually occupied the market due to its wide color gamut, high brightness, and long life. At present, projection screens of projection display systems generally include different types of soft screens and hard screens. Among them, the hard screen has a good display effect because of its good optical gain uniformity, color reproduction and flatness. figure 1 It is a structural schematic diagram of a positive projection optical screen in the prior art. Taking a positive projection optical screen as an example, the hard screen usually includes such as figure 1 The optical structure layers shown are: colored layer 101, diffusion layer 102, F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/56G03B21/60G03B21/54G03B21/58
CPCG03B21/54G03B21/56G03B21/58G03B21/60G03B21/64
Inventor 李建军杨长明钟强赵云
Owner QINGDAO HISENSE LASER DISPLAY CO LTD