CN214122678U

CN214122678U - Light-resistant orthographic projection screen

Info

Publication number: CN214122678U
Application number: CN202120255783.3U
Authority: CN
Inventors: 王朋
Original assignee: Zhejiang Weseni Technology Co Ltd
Current assignee: Zhejiang Weseni Technology Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-09-03
Anticipated expiration: 2031-01-29

Abstract

A light-resistant orthographic projection screen sequentially comprises an anti-glare layer, a multifunctional grating layer, a filter layer for filtering ambient light to improve the image contrast, a reflecting layer and a backlight layer, wherein the multifunctional grating layer is provided with a plurality of convex parts distributed at intervals, the convex parts are distributed along the transverse direction of a projection screen, the surfaces of the convex parts are respectively provided with a reflecting part, and the tops of the reflecting parts are respectively provided with a convex black grating for shielding and absorbing the ambient light; because the utility model discloses an anti light is just throwing the curtain and is equipped with black grating and filter layer, the black grating can shelter from the absorption to the ambient light that comes from projection screen front top, thereby effectively filter most ambient light, and the small part ambient light that is not filtered and absorbed by multi-functional grating layer then can further be filtered by the filter layer, thereby the interference of very big reduction ambient light to the projection light, make the projection image not receive the influence of ambient light basically, and then improve the contrast of projection picture greatly, guarantee the display effect of projection picture.

Description

Light-resistant orthographic projection screen

[ technical field ] A method for producing a semiconductor device

The utility model relates to a projection screen, in particular to can resist ambient light and improve anti light of picture contrast and throw the curtain just.

[ background of the invention ]

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 theater entertainment, etc. Projection screens are generally classified into front projection screens and rear projection screens. The front projection screen relies on the principle of reflection, 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. The rear projection screen relies on the principle of transmission, the projection device is placed on the back side of the projection screen (on both sides of the projection screen with the viewer), and the projected light is transmitted through the projection screen and enters human eyes. The front projection screen can be made into any size, but the environment light needs to be controlled to obtain a good viewing effect. When the ambient light is stronger, the picture contrast is lower, and the presented projection picture becomes white and grey, so that the picture quality is reduced, and the viewing experience is influenced. Therefore, for the forward projection screen, if the interference of the ambient light can be reduced and the picture contrast can be improved, the picture quality can be greatly improved and the product competitiveness can be improved.

[ Utility model ] content

The utility model aims at solving the above problems, and provides a light-resistant projection screen capable of filtering ambient light and improving picture contrast.

In order to solve the above problems, the utility model provides a light-resistant positive projection screen, which is characterized in that the screen comprises an anti-glare layer, a multifunctional grating layer, a filter lens layer, a reflecting layer and a backlight layer in sequence, wherein the anti-glare layer is provided with a frosted surface for anti-glare; the multifunctional grating layer is provided with a plurality of protruding parts which are distributed at intervals, the protruding parts are distributed along the transverse direction of the projection screen, the surfaces of the protruding parts are respectively provided with a reflecting part, and the tops of the reflecting parts are respectively provided with a convex black grating which is used for shielding and absorbing ambient light; the filter layer is used for filtering ambient light to improve the image contrast; the reflecting layer is used for reflecting projection light; the backlight layer is used for shielding back side ambient light.

Further, the filter layer is a gray mirror.

Further, a light-transmitting area formed by transparent materials is filled between the protruding portions, and the surface of the light-transmitting area is flush with the top of the black grating.

Furthermore, the cross section of the convex part is in an isosceles trapezoid shape and is evenly spaced.

Furthermore, the black grating is in a long strip shape and is perpendicular to the filter layer, and the black grating extends from one end of the projection screen to the other end along the width direction.

Furthermore, end shading strips are arranged at two ends of the light-transmitting area respectively and are parallel to the black grating.

Further, the end light-shielding strip is formed by coating black ink on the end of the light-transmitting area.

Further, the anti-glare layer is made of a PET material, and the surface of the anti-glare layer is frosted.

Further, the backlight layer is made of black ink.

The beneficial contributions of the utility model reside in that, it has effectively solved above-mentioned problem. The utility model discloses an anti light is just throwing the curtain and is equipped with multi-functional grating layer and filter layer, wherein the black grating in the multi-functional grating layer can shelter from the absorption to the ambient light that comes from projection screen front top, thereby effectively filter most ambient light, and the small part ambient light that is not filtered the absorption by multi-functional grating layer then can further be filtered by the filter layer and filter, thereby the interference of very big reduction ambient light to the projection light, make the projection image not receive the influence of ambient light basically, and then improve the contrast of projection picture greatly, guarantee the display effect of projection picture. The utility model discloses a curtain is just throwing to anti light can effective filtration and restrain the ambient light and improve the display effect greatly, and it has very strong practicality.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the principle of light resistance.

Fig. 3 is a schematic structural diagram of a multifunctional grating layer.

The attached drawings are as follows: the anti-glare layer 10, the multifunctional grating layer 20, the base portion 21, the protruding portion 22, the reflecting portion 23, the black grating 24, the light-transmitting region 25, the filter layer 30, the reflecting layer 40, and the backlight layer 50.

[ detailed description ] embodiments

The following examples are further to explain and supplement the present invention, and do not constitute any limitation to the present invention.

As shown in fig. 1, the anti-light positive projection screen of the present invention sequentially includes an anti-glare layer 10, a multifunctional grating layer 20, a filter layer 30, a reflective layer 40, and a backlight layer 50.

As shown in fig. 1 and 2, the anti-glare layer 10 is located at the outermost side of the projection screen, and in use, the anti-glare layer directly faces the user, and is used for diffusing the projection light to various angles, preventing glare, avoiding dazzling, and facilitating the user to view the projection picture from various angles. The surface of the antiglare layer 10 is frosted, which may be frosted by a known process.

As shown in fig. 1 and fig. 2, the multifunctional grating layer 20 is used for blocking and absorbing ambient light, and filtering most of the ambient light, so that most of the ambient light cannot enter the next layer of structure, thereby reducing the influence of the ambient light on the projection light. In addition, the multifunctional grating layer 20 is also used for reflecting the projection light.

As shown in fig. 1 and 3, the multifunctional grating layer 20 includes a base portion 21 made of a transparent material, a protruding portion 22, a reflecting portion 23, and a black grating 24.

As shown in fig. 1 and 3, the base portion 21 and the protruding portion 22 are integrally formed, and are made of a transparent material. In the present embodiment, it is made of transparent resin. The base portion 21 has a flat plate shape, and is combined with one side surface of the filter layer 30. The protrusions 22 are distributed on the surface of the base portion 21 and protrude from the surface of the base portion 21. The protrusions 22 are uniformly spaced apart and distributed in the lateral direction of the projection screen, and extend from one end of the projection screen to the other end in the width direction. The distance between the protrusions 22 may be set as required. The cross section of the convex part 22 is in an isosceles trapezoid shape, which is beneficial to reflecting projection light.

As shown in fig. 1 and 3, the surface of each of the convex portions 22 is provided with a reflecting portion 23. The reflective portion 23 is formed by coating a reflective material on the surface of the convex portion 22 by a known coating process. The reflection unit 23 is used for reflecting the projection light. The reflective material includes, but is not limited to, white gray, etc., which have a strong reflection capability to light and thus are suitable for making the reflective portion 23.

As shown in fig. 1, 2, and 3, the black grating 24 is used for blocking and absorbing ambient light, so as to greatly reduce the influence of the ambient light on the projection screen. The black grating 24 is disposed on the top of the reflection portion 23. The black grating 24 is in a long strip shape, and is perpendicular to the filter layer 30, and the black grating 24 is disposed along the transverse direction of the projection screen, and extends from one end of the projection screen to the other end along the width direction. The black gratings 24 are spaced at equal intervals, and the sizes of the black gratings 24 are consistent. The black grating 24 is distributed in the center of the reflection portion 23, and protrudes from the surface of the reflection portion 23.

As shown in fig. 2, the black grating 24 and the filter layer 30 do not act in the same direction with respect to the ambient light, and can perform filtering suppression with respect to the ambient light in different directions.

As shown in fig. 1 and fig. 2, in order to facilitate the composition, a transparent material is filled between the protruding portions 22 of the multifunctional grating layer 20. The transparent material forms a light transmissive region 25 through which projected light and a portion of ambient light can pass into the latter structure. The surface of the light-transmitting region 25 is flush with the top of the black grating 24, so that the black grating 24 and the reflective portion 23 can be protected, and a flat surface can be provided to facilitate the compounding of the anti-glare layer 10. In this embodiment, the transparent material of the transparent region 25 is selected from a transparent UV glue, which is cured by ultraviolet rays to form the transparent region 25.

As shown in fig. 2, when the ambient light enters from the front upper side of the projection screen, and passes through the anti-glare layer 10 and enters the multi-functional grating layer 20, most of the ambient light will reach the black grating 24 and be blocked and absorbed by the black grating 24, and the projection light emitted by the projection apparatus enters the latter structural layer mainly through the light-transmitting region 25.

As shown in fig. 1 and 2, end light-shielding strips 26 are provided at upper and lower ends of the light-transmitting region 25, respectively. The end light shielding bar 26 is parallel to the black grating 24, and can provide shielding for the reflective portion 23 of the multifunctional structure layer 30. The end light shielding strips 26 are formed by coating black ink on the end surfaces of the light-transmitting regions 25.

As shown in FIG. 2, the filter layer 30 is used to further filter ambient light and serves to selectively filter and fuse the light beams from the projection device from a particular direction. In this embodiment, the filter layer 30 is a gray mirror, which has a uniform absorption characteristic in the visible light range, and has a light blocking effect by reducing the amount of light passing therethrough, and has no influence on the color while blocking light. When most of the ambient light passes through the multifunctional grating layer 20 and is absorbed by the black grating 24, a small portion of the unabsorbed ambient light passes through the transparent region 25 together with the projection light to reach the filter layer 30. Under the effect of the filter layer 30, the ambient light is blocked and filtered, the projection light is also blocked and loses some luminous flux, however, because the light intensity of the projection light is much greater than that of the ambient light, the luminous flux lost by the projection light is a little part relative to the whole projection light, and the luminous flux lost by the ambient light is a great part or even all relative to the whole ambient light reaching the filter layer 30, therefore, after passing through the filter layer 30, the ambient light is filtered, and the projection light is only a little lost part. After the ambient light is filtered, the projection light cannot be interfered, and the contrast of a projection picture is greatly improved; and a part of the light flux loss of the projection light is very little, and only slight change of the brightness is influenced, so that the visual effect presented by the whole is that the contrast of the picture visible by naked eyes is improved.

As shown in fig. 1 and 2, the reflective layer 40 is used for reflecting the projection light, so that the projection light is reflected back to the front side of the projection screen and enters the human eye. The reflective layer 40 is disposed on the back side of the filter layer 30, and is usually made of a light-colored material such as white, silver white, etc., which has a better reflection effect on light.

As shown in fig. 1 and fig. 2, the backlight layer 50 is disposed on the back side of the reflection layer 40, and is used for shielding the back-side ambient light of the projection screen to reduce the influence of the back-side ambient light on the projection image, thereby improving the contrast of the projection image. The backlight layer 50 is made of a black material, and may be a hard structural layer or a soft structural layer. For example, the backlight layer 50 may be a black ink layer formed by coating black ink on the back side of the reflective layer 40. For another example, the backlight layer 50 may be formed by laminating a black resin layer on the reflective layer 40.

Therefore, the anti-light positive projection screen of the present invention is formed, which sequentially comprises an anti-glare layer 10, a multifunctional grating layer 20, a filter layer 30, a reflective layer 40, and a backlight layer 50. Wherein, the side where the anti-glare layer 10 is located is the side that is viewed by the viewer, namely the front side; the side on which the backlight layer 50 is located is the side facing away from the viewer, i.e. the back side.

The utility model discloses an anti light principle of curtain is just throwing to anti light as follows:

when the projector is used, as shown in fig. 2, the projector is disposed in front of the projection screen, and when the projection light emitted by the projector enters the projection screen, the projection light passes through the antiglare layer 10, the light-transmitting region 25 in the multifunctional grating layer 20, and the filter layer 30 in sequence and enters the reflective layer 40, and is reflected back toward the viewer by reflection of the reflective layer 40, so that the projection light enters human eyes to make the user view the projection picture. The anti-glare layer 10 can prevent glare and enable viewers at various positions to view the projection images.

As shown in fig. 2, ambient light, such as lamp light, is typically injected from an obliquely upward direction above the projection device. When the ambient light passes through the anti-glare layer 10 and enters the multi-functional grating layer 20, the ambient light is incident on the black grating 24 and is shielded and absorbed, so that most ambient light cannot reach the next layer structure; the ambient light which is not shielded and absorbed by the black grating 24 passes through the light-transmitting area 25 of the multifunctional grating layer 20 and then reaches the filter layer 30, and the ambient light is filtered (i.e., blocked) by the filter layer 30, so that the ambient light is basically filtered and cannot be incident to the reflecting layer 40 as the projection light, the interference of the ambient light such as sunlight and light to projection imaging can be greatly reduced, the contrast of a projection picture is improved, and the display effect is improved. In addition, the backlight layer 50 is black, and the ambient light at the rear side of the projection screen is absorbed and shielded by the backlight layer 50, so that the interference of the ambient light on the projection imaging can be further reduced, and the display effect of the projection picture can be further improved.

The utility model discloses a screen is just throwing to anti light can effective filtration and restrain the ambient light, makes the projection picture not influenced by ambient light, and its contrast and the display effect that can improve the projection picture greatly.

While the invention has been described with reference to the above embodiments, the scope of the invention is not limited thereto, and the above components may be replaced with similar or equivalent elements known to those skilled in the art without departing from the concept of the invention.

Claims

1. An anti-light orthographic projection screen, comprising in order:

an antiglare layer (10) provided with a frosted surface for antiglare purpose;

the multifunctional grating layer (20) is provided with a plurality of protruding parts (22) which are distributed at intervals, the protruding parts (22) are distributed along the transverse direction of the projection screen, the surfaces of the protruding parts (22) are respectively provided with a reflecting part (23), and the tops of the reflecting parts (23) are respectively provided with a convex black grating (24) which is used for shielding and absorbing ambient light;

a filter layer (30) for filtering ambient light to improve picture contrast;

a reflective layer (40) for reflecting the projection light;

a backlight layer (50) for blocking back side ambient light.

2. The screen of claim 1, wherein the filter layer (30) is a gray mirror.

3. The screen of claim 1, wherein the protrusions (22) are filled with transparent regions (25) formed by transparent material, and the surface of the transparent regions (25) is flush with the top of the black grating (24).

4. A screen as claimed in claim 1, wherein the projections (22) are isosceles trapezoids in cross-section, which are evenly spaced.

5. The screen of claim 1, wherein the black grating (24) is elongated perpendicular to the filter layer (30), the black grating (24) extending widthwise from one end of the projection screen to the other.

6. A screen as claimed in claim 3, wherein end light-shielding strips (26) are provided at both ends of the light-transmitting region (25), respectively, the end light-shielding strips (26) being parallel to the black grating (24).

7. The screen of claim 6, wherein the end light-shielding strips (26) are formed by coating black ink on the ends of the light-transmitting areas (25).

8. A screen as claimed in claim 1, wherein the antiglare layer (10) is made of PET and has a frosted surface.

9. A screen for resisting positive light projection as claimed in claim 1, characterized in that the backlight layer (50) is made of black ink.