An orthographic projection light transmission projection screen and a projection system

A technology of projection screen and front projection, which is applied in the field of projection display, can solve problems such as lack of a good solution, and achieve the effects of simplified structure, low cost, and improved contrast

Pending Publication Date: 2017-11-07
CHENGDU FSCREEN SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in stage performances, window displays or some special occasions, there are more and more demands to be able to present both the foreground image and the background content at the same time, and the existing realization method is to use transparent liquid crystal display, transparent OLED Display, phantom display or projection holographic screen display, etc., these methods can achieve better display effect, but due to the limitation of its projection principle, there has been no good solution to the demand for high brightness and super large size foreground display screen. plan

Method used

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  • An orthographic projection light transmission projection screen and a projection system
  • An orthographic projection light transmission projection screen and a projection system
  • An orthographic projection light transmission projection screen and a projection system

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no. 1 example

[0045] Please refer to figure 1 , this embodiment provides a forward projection light-transmitting projection screen 1000, which includes a screen substrate 100, and a plurality of light-absorbing grating strips 200 are arranged at intervals on one side of the screen substrate 100, and the light-absorbing grating strips 200 One side is coated with a diffuse reflection layer 300 , and a light-transmitting area 400 is provided in the space between the plurality of light-absorbing grating bars 200 on the screen substrate 100 .

[0046] When the front projection light-transmitting projection screen 1000 in this embodiment is displaying images, projection light is incident on the diffuse reflection layer 300 from one side of the screen substrate 100 , is reflected and travels away from the screen substrate 100 The background light is incident on the screen substrate 100 from the other side of the screen substrate 100, transmitted through the light-transmitting area 400 on the scree...

no. 2 example

[0066] Please refer to Figure 14 , this embodiment provides a projection system 2000, which includes the front projection light-transmitting projection screen 1000 and the projector 500 provided in the first embodiment above. The projector 500 is arranged on the side of the screen substrate 100 in the front projection light transmission screen 1000 on which the light-absorbing grating strips 200 are arranged.

[0067] In this embodiment, on the one hand, the projection light emitted by the projector 500 arranged on one side (front) of the screen substrate 100 is incident on the diffuse reflection layer 300 arranged on the light-absorbing grating strip 200, is reflected and moves away from The direction of the screen substrate 100 emerges and finally reaches the eyes of the observer; on the other hand, the background light emitted by the scene behind the screen is incident on the screen substrate 100 from the other side (back) , is transmitted (refracted) through the light-tr...

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Abstract

The invention provides an orthographic projection light transmission projection screen and a projection system, and relates to the technical field of projection display. The orthographic projection light transmission projection screen comprises screen base materials. One side surface of the screen base materials is provided with a plurality of light absorption grids; one side of each light absorption grid is coated with a diffuse reflection layer; and light transmission areas are arranged on the interval areas between the plurality of the light absorption grids. Compared with the prior art, the projection screen provided by the invention enables a viewer to both see a projection image displayed on the diffuse reflection layer and the scene behind the screen through the light transmission areas distributed on the screen. The two optical light rays do not interfere with each other, so that perfect fusion of image information display is realized, and double visual enjoyment is provided for the viewer. Meanwhile, the light absorption grids can effectively absorb the ambient light and other stray light, thereby greatly enhancing the light resistance capability of the screen and raising the contrast of the displayed image.

Description

technical field [0001] The invention relates to the technical field of projection display, in particular to a front projection light transmission projection screen and a projection system. Background technique [0002] At present, projection screens widely used in the field of projection display can generally be classified into two types, reflective type and transmissive type. Among them, the reflective type is used for front projection, and the transmissive type is used for rear projection. [0003] Reflective projection screens are used when the viewer and the projector are on the same side. The displayed image is projected by the projector onto a reflective projection screen and finally reflected into the observer's eyes. [0004] The transmissive projection screen is suitable for the situation that the observer and the projector are respectively located on both sides of the projection screen. At this time, the light beam projected onto the projection screen by the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/62
CPCG03B21/62
Inventor 张益民
Owner CHENGDU FSCREEN SCI TECH
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