CN220085230U

CN220085230U - Front projection screen capable of double-sided projection

Info

Publication number: CN220085230U
Application number: CN202321031682.3U
Authority: CN
Inventors: 王朋
Original assignee: Shandong Weiseni Technology Co ltd
Current assignee: Shandong Weiseni Technology Co ltd
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-11-24
Anticipated expiration: 2033-05-04

Abstract

The front projection screen capable of double-sided projection comprises an intermediate background layer, a first reflecting layer, a second reflecting layer, a first anti-glare layer and a second anti-glare layer, wherein the intermediate background layer is black; the first reflecting layer is arranged on one side of the middle background layer; the second reflecting layer is arranged on one side of the middle background layer, which is far away from the first reflecting layer; the first anti-glare layer is arranged on the surface of the first reflecting layer; the second anti-glare layer is arranged on the surface of the second reflection layer. The first reflecting layer and the second reflecting layer can be used for projection imaging, so that the application range can be increased by double-sided projection. In addition, the first reflecting layer and the second reflecting layer have different reflecting structures, so that different projection effects can be obtained, wherein the concave column parts of the first reflecting layer are favorable for reflecting projection light towards the left side and the right side of the projection screen, and the uniformity of light rays is improved; the convex strips of the second reflecting layer can be used for reflecting and absorbing ambient light, and can improve the picture contrast.

Description

Front projection screen capable of double-sided projection

[ field of technology ]

The present utility model relates to projection screens, and more particularly, to a front projection screen capable of double-sided projection.

[ background Art ]

Projection screens are tools that cooperate with projectors to display images, video screens, etc., and are commonly used in commercial advertising, teaching, office, home or theatre entertainment applications, etc. Projection screens are generally classified into front projection screens and rear projection screens. The front projection screen relies on the reflection principle, and the projection device is placed in front of the projection screen (on the same side as the viewer), and the projection screen reflects the projection light. Rear projection screens rely on the transmission principle, where the projection device is placed on the rear side of the projection screen (on both sides of the projection screen, respectively, with the viewer), and the projection light is transmitted through the projection screen and into the human eye. The existing projection screen is usually used on one side and cannot be used on both sides. In addition, the existing projection screen needs to control the ambient light to obtain a good viewing effect, has poor resistance to the ambient light, and when the ambient light is strong, the projection picture can be whitened and grey, so that the picture quality is reduced, and the viewing experience is affected.

[ utility model ]

The present utility model is directed to solving the above-mentioned problems, and provides a front projection screen capable of double-sided projection.

In order to solve the problems, the utility model provides a front projection screen capable of double-sided projection, which is characterized by comprising an intermediate background layer, a first reflecting layer, a second reflecting layer, a first anti-glare layer and a second anti-glare layer, wherein the intermediate background layer is black; the first reflecting layer is arranged on one side of the middle background layer; the second reflecting layer is arranged on one side of the middle background layer, which is far away from the first reflecting layer; the first anti-glare layer is arranged on the surface of the first reflecting layer; the second anti-glare layer is arranged on the surface of the second reflection layer.

Further, a plurality of concave column parts extending vertically are arranged on the first reflecting layer, and the concave column parts are spaced in parallel.

Further, a plurality of raised strips extending in the transverse direction are arranged on the second reflecting layer, the raised strips are provided with a first surface and a second surface extending in the transverse direction, light absorbing materials are arranged on the first surface, and reflecting materials are arranged on the second surface.

Further, the first surface is perpendicular to the middle background layer, and the second surface intersects the first surface and the middle background layer.

Further, second transparent materials are filled between the raised strips, and second diffusion particles are mixed in the second transparent materials.

Further, first transparent materials are filled between the concave column portions, and diffusion particles are mixed in the first transparent materials.

The present utility model has an advantageous contribution in that it effectively solves the above-mentioned problems. The front projection screen capable of double-sided projection is provided with the first reflecting layer and the second reflecting layer which can be projected to form images on two sides of the middle background layer respectively, so that the front projection screen can be used for double-sided projection to improve the application range. In addition, the first reflecting layer and the second reflecting layer have different reflecting structures, so that different projection effects can be obtained, wherein the concave column parts of the first reflecting layer are favorable for reflecting projection light towards the left side and the right side of the projection screen, and the uniformity of light rays is improved; the convex strips of the second reflecting layer can be used for reflecting and absorbing ambient light, and can improve the picture contrast. The front projection screen capable of realizing double-sided projection has the characteristics of novel structure and practical function, and has strong practicability and is suitable for being widely popularized.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model.

The attached drawings are identified: the first anti-glare layer 10, the first reflection layer 20, the concave pillar portion 21, the first diffusion portion 22, the first transparent material 221, the first diffusion particles 222, the intermediate background layer 30, the second reflection layer 40, the convex stripe portion 41, the first surface 411, the second surface 412, the second diffusion portion 42, the second transparent material 421, the second diffusion particles 422, and the second anti-glare layer 50.

[ detailed description ] of the utility model

The following examples are further illustrative and supplementary of the present utility model and are not intended to limit the utility model in any way.

As shown in fig. 1 and 2, the front projection screen capable of double-sided projection of the present utility model can be used on both sides, and the two sides have good projection effects, and the projection effects on both sides are slightly different, so that different sides can be selected for use as required.

Specifically, the double-sided projectable front projection screen of the present utility model includes a first anti-glare layer 10, a first reflection layer 20, an intermediate background layer 30, a second reflection layer 40, and a second anti-glare layer 50.

The middle background layer 30 is a substrate layer, and is used for carrying the first reflective layer 20 and the second reflective layer 40, and for providing a dark background to realize the effect of shielding the backside ambient light, so as to improve the contrast of the picture. The middle background layer 30 is black, and its manufacturing materials include, but are not limited to, PET material, PVC material, EVA material, PC material, PMMA material, TPU material, etc. The intermediate background layer 30 may be a hard structural layer or a soft structural layer. In this embodiment, the first structural layer 1 is preferably made of TPU, and has good physical and mechanical properties, and is easy to recover after being rolled, so that the flatness of the projection screen can be maintained, the projection screen cannot be deformed due to repeated rolling and unfolding, and the commercial use value of the projection screen is further improved.

The first reflective layer 20 is provided on one side surface of the intermediate background layer 30, which is used for reflection imaging. In order to make the brightness of the picture observed by the people on the left and right sides of the projection screen more uniform, a plurality of concave column parts 21 are arranged on the first reflecting layer 20 along the vertical direction.

The concave column portions 21 are spaced in parallel, and the distance between them can be set as required. The concave column portion 21 is semi-cylindrical, and has a reflective capability on the arc column surface, so that the projection light can be reflected towards the audience, and when the concave column portion 21 is arranged vertically, the projection light can be reflected towards the left and right sides of the projection screen, so that the original distribution of the projection light is changed, the viewing brightness of the left and right sides of the projection screen is basically consistent with that of the central position, and thus the problem that the viewing brightness of the central position is high and the viewing brightness of the two sides is slightly low can be avoided.

The first reflective layer 20 is made of a highly reflective material, such as a light-colored opaque material. In this embodiment, the first reflective layer 20 is made of a silver resin material.

In order to improve the viewing angle and the flatness of the screen, first transparent materials 221 are filled between the concave column portions 21, and first diffusion particles 222 are mixed in the first transparent materials 221. The first transparent material 221 fills up the concave pillar portion 21 to form a first diffusion portion 22. The surface of the first diffusion portion 22 is flush with the top of the concave pillar portion 21. The first diffusion particles 222 may be made of a known material, and the particle size thereof may be set as required. The first diffusion particles 222 can improve the light diffusing capability, so that the projection light angle is more diversified, and the visual angle can be improved.

The first anti-glare layer 10 is disposed on the surface of the first reflection layer 20, and the surface of the first anti-glare layer 10 is frosted for preventing glare.

The second reflective layer 40 is disposed on a surface of the middle background layer 30 facing away from the first reflective layer 20. The second reflective layer 40 is used for reflective imaging.

The second reflective layer 40 is provided with a plurality of protruding strips 41 extending in the transverse direction. The ridge 41 extends from one end of the projection screen to the other end in the lateral direction.

The ridge 41 is provided with a first surface 411 and a second surface 412 extending in the transverse direction. The first surface 411 is configured to absorb ambient light and has a light absorbing material disposed thereon. The second surface 412 is configured to reflect the projected light, and has a reflective material disposed thereon.

The light absorbing material and the reflecting material can be known materials, wherein the light absorbing material refers to materials with strong light absorbing capacity, such as black ink, paint and the like, and the reflecting material refers to materials with strong reflecting capacity, such as silver paint, pearl paint and the like.

In this embodiment, the raised strip 41 has a rectangular structure with a right triangle cross section. The first surface 411 is perpendicular to the middle background layer 30, so when the dark light absorbing material is disposed on the first surface 411, the projection area of the dark light absorbing material on the front surface of the projection screen can be greatly reduced, so that a user does not feel that black stripes are formed on the projection screen, and the dark light absorbing material can absorb ambient light while minimizing the influence on the brightness of the projection screen, and avoid the dark light absorbing material from influencing the display effect of the projection screen.

The second surface 412 intersects the first surface 411, the intermediate background layer 30. The inclination angle of the second surface 412 may be set as desired. The second surfaces 412 of the raised strips 41 may have the same inclination angle or may have different inclination angles, and may be specifically set as needed.

The ribs 41 are connected to each other, and the first surface 411 is continuously connected to the second surface 412, so that the reflective area can be increased and the exposure of the background black can be reduced.

Normally, when the ambient light is incident on the second reflective layer 40, most of the ambient light is incident on the light absorbing material on the first surface 411 and absorbed, and a very small portion of the ambient light is incident on the second surface 412 below the first surface 411, so that the vertically disposed first surface 411 can be used to absorb the ambient light to improve the contrast of the projected image.

In order to improve the viewing angle and the flatness of the screen, the second transparent material 421 is filled between the convex portions 41, and the second transparent material 421 is mixed with the second diffusion particles 422. The second transparent material 421 fills up the convex strip 41 to form a second diffusion 42. The surface of the second diffusion 42 is flush with the top of the ridge 41. The second diffusion particles 422 may be made of a known material, and their particle size may be set as needed. The second diffusing particles 422 can enhance the light diffusing capability, so that the projection light angle is more diversified, and the visual angle can be enhanced.

The second transparent material 421 may be the same as or different from the first transparent material 221, and may be specifically set as required. The density of the first diffusion particles 222 may or may not be the same as the density of the second diffusion particles 422, and may be set as needed.

The second anti-glare layer 50 is disposed on the surface of the second reflection layer 40, and the surface of the second anti-glare layer 50 is frosted for preventing glare.

Thus, the double-sided projection front projection screen of the utility model is formed, both sides of which can be reflected for imaging, so that either side can be directed towards the viewer for front projection. The concave pillar portion 21 of the first reflective layer 20 can make the projection light better reflect toward two sides, thereby improving the brightness distribution of the projection screen, so that a viewer can watch the projection picture with consistent brightness from both left and right sides without having the phenomena of bright side and dark side. In addition, the light absorbing material disposed on the first surface 411 of the second reflective layer 40 can be used to absorb ambient light to improve the contrast of the projected image. When the front projection screen capable of double-sided projection of the present utility model is used, a suitable side can be selected and used as needed, and for example, the second reflection layer 40 can be used toward the viewer in a brighter environment, which can improve the image quality to some extent. The first reflective layer 20 can be used towards the viewer in a darker environment, which results in a better projection effect and a more uniform brightness distribution. In addition, the glass can be paved on a glass facade for use, and both sides can be used for normal use, so that the application range is increased.

Although the present utility model has been disclosed by the above embodiments, the scope of the present utility model is not limited thereto, and each of the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the spirit of the present utility model.

Claims

1. A front projection screen capable of double-sided projection, comprising:

an intermediate background layer (30) which is black;

a first reflection layer (20) provided on one side of the intermediate background layer (30);

a second reflection layer (40) provided on the side of the intermediate background layer (30) away from the first reflection layer (20);

a first anti-glare layer (10) provided on the surface of the first reflection layer (20);

and a second anti-glare layer (50) provided on the surface of the second reflection layer (40).

2. The double-sided projectable front projection screen of claim 1,

a plurality of concave column parts (21) extending vertically are arranged on the first reflecting layer (20), and the concave column parts (21) are spaced in parallel.

3. A two-sided projectable front projection screen as claimed in claim 1, characterized in that a number of ridges (41) extending in the transverse direction are provided on the second reflective layer (40), the ridges (41) being provided with a first surface (411) and a second surface (412) extending in the transverse direction, a light absorbing material being provided on the first surface (411) and a reflective material being provided on the second surface (412).

4. A double-sided projectable front projection screen as claimed in claim 3, characterized in that the first surface (411) is perpendicular to the intermediate background layer (30), and the second surface (412) intersects the first surface (411), intermediate background layer (30).

5. The double-sided projection screen according to claim 4, wherein the convex strips (41) are filled with a second transparent material (421), and second diffusion particles (422) are mixed in the second transparent material (421).

6. The double-sided projectable front projection screen according to claim 2, characterized in that first transparent materials (221) are filled between the concave column portions (21), and diffusion particles (222) are mixed in the first transparent materials (221).