CN210954600U - Light-resistant projection screen - Google Patents

Abstract

The utility model provides a light-resistant projection screen, its characterized in that, its includes the functional layer, be equipped with a plurality of micro-structure at interval in the functional layer, be the printing opacity portion between the micro-structure, printing opacity portion is made by printing opacity material, the micro-structure is equipped with first function portion and the second function portion that surface attribute is different at least, the surface colour of first function portion and second function portion is different, and wherein, first function portion can be used for reflecting, and the second function portion can be used for absorbing ambient light to make this functional layer both can be used for the reflection formation of image, can absorb ambient light again and reduce ambient light's interference. The utility model discloses an anti light projection screen, its contrast and luminance that can improve the projection picture guarantees the display effect of projection picture, and it not only can be used to conventional just throw screen, rear-projection screen, can be used to the projection screen of special function types such as transparent holographic imaging membrane, blackboard moreover, and its range of application is extensive, has very strong practicality, should widely popularize.

Description

Light-resistant projection screen

[ technical field ] A method for producing a semiconductor device

The utility model relates to a projection screen, in particular to can improve light-resistant projection screen of projection display effect.

[ 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. As for the liquid crystal screen for displaying images, in the occasion of large-size requirement, the liquid crystal screen has high cost and is not easy to carry and store, and cannot be instantly stored when not used; and the liquid crystal screen larger than 50 inches is expensive, which is not beneficial to the purchase and use of common families; in addition, when the liquid crystal screen is watched for a long time, the eyesight of human eyes is easily affected by radiation, and the human health is not facilitated. However, the projection screen of the same size does not have the above problems, and not only is the cost and the selling price far lower than those of the liquid crystal screen of the same size, but also the projection screen is easy to carry, roll up and store, and meanwhile, the projection screen does not affect the health of human eyes, so the projection screen is widely applied. However, the existing projection screen is often interfered by ambient light when in use; when the ambient light is stronger, the projection image becomes more white and more grey, so that the contrast of the projection image cannot meet the requirement, and therefore, the audience cannot see clearly, and the basic demonstration effect is lost.

[ Utility model ] content

The present invention is directed to solve the above problems, and provides an anti-light projection screen capable of reducing the interference of ambient light.

In order to achieve the above object, the utility model provides an anti light projection screen, a serial communication port, it includes the functional layer the interval is equipped with a plurality of microstructure in the functional layer, be printing opacity portion between the microstructure, printing opacity portion is made by the printing opacity material, the microstructure is equipped with the different first functional part and the second functional part of surface attribute at least, the surperficial B colour of first functional part and second functional part is different.

Further, the first function part is a reflection part which is in a light color shape and is used for reflecting light; the second functional portion is a light absorbing portion, which is dark-colored, for absorbing ambient light.

Further, the first functional part is made of a light reflecting material, and the second functional part is made of a light absorbing material.

Further, the microstructure comprises a microstructure main body, a first functional portion and a second functional portion, wherein the first functional portion and the second functional portion are respectively arranged on the microstructure main body, and the first functional portion and the second functional portion are not coplanar.

Further, the microstructure main body is made of a light reflecting material, the first functional portion and the microstructure main body are integrally formed, and the second functional portion is formed by arranging a light absorbing material on the surface of the microstructure main body.

Further, the microstructure main body is made of a light absorption material, the second functional portion and the microstructure main body are integrally formed, and the first functional portion is formed by arranging a light reflection material on the surface of the microstructure main body.

Further, the first functional portion is formed by a light reflecting material disposed on the surface of the microstructure main body, and the second functional portion is formed by a light absorbing material disposed on the surface of the microstructure main body.

Furthermore, the micro-structures are in a strip shape and are distributed in the functional layer at intervals in the transverse direction.

Furthermore, the surfaces B of the first functional part and the second functional part respectively form included angles with the surface of the functional layer in an inclined mode.

Furthermore, a substrate layer is compounded on the surface of one side of the functional layer, and the substrate layer is made of a light-transmitting material.

Further, the microstructure is in a light-transmitting shape, a bottom material layer is compounded on one side surface of the functional layer, and the bottom material layer is made of a transparent or semitransparent material.

Furthermore, the microstructure is light-tight, a light absorption layer is compounded on the surface of one side of the functional layer, and the light absorption layer is made of a light absorption material.

Further, the light absorbing layer is dark.

Further, the surfaces B of the first functional portion and the second functional portion are planar, and the surface a of the first functional portion of each microstructure is parallel to the outer surface of the second functional portion of the microstructure.

Further, the surfaces B of the first functional portion and the second functional portion are planar, and the surface a of the first functional portion of each microstructure intersects with the surface B of the second functional portion of the microstructure.

Further, the surfaces B of the first functional portion and the second functional portion are planar, and the surface a of the first functional portion of each microstructure is not parallel to and does not intersect with the surface B of the second functional portion of the microstructure.

Further, the surface B of the first functional part or the second functional part is one or a combination of a plurality of curved surfaces, arc surfaces, waves and saw teeth.

The beneficial contributions of the utility model reside in that, it has effectively solved above-mentioned problem. The utility model discloses an anti light projection screen is equipped with the functional layer, and the interval is equipped with the microstructure in the functional layer, and the microstructure is equipped with the different first functional part of surface attribute and second functional part, and wherein, first functional part can be used to reflect, and second functional part can be used to absorb ambient light to make this functional layer both can be used for the reflection formation of image, can absorb ambient light again and reduce the interference of ambient light. The utility model discloses an anti light projection screen, its contrast and luminance that can improve the projection picture guarantees the display effect of projection picture, and it not only can be used to conventional just throw screen, rear-projection screen, can be used to the projection screen of special function types such as transparent holographic imaging membrane, blackboard moreover, and its range of application is extensive, has very strong practicality, should widely popularize.

[ description of the drawings ]

Figure 1 is a schematic cross-sectional view of a functional layer.

Figure 2 is a schematic cross-sectional view of a functional layer.

Fig. 3 is a schematic perspective view of a microstructure.

Fig. 4 is a schematic perspective view of a microstructure.

Fig. 5 is a schematic perspective view of a microstructure.

Fig. 6 is a schematic perspective view of a microstructure.

Fig. 7 is a schematic cross-sectional view of a microstructure.

Fig. 8 is a schematic cross-sectional view of a microstructure.

Fig. 9 is a schematic cross-sectional view of a microstructure.

Fig. 10 is a schematic cross-sectional view of a microstructure.

Fig. 11 is a schematic cross-sectional view of a microstructure.

Fig. 12 is a schematic cross-sectional view of a microstructure.

Fig. 13 is a schematic cross-sectional view of a microstructure.

Fig. 14 is a schematic cross-sectional view of a microstructure.

Fig. 15 is a schematic cross-sectional view of a microstructure.

Fig. 16 is a schematic cross-sectional view of a microstructure.

Fig. 17 is a schematic cross-sectional view of a microstructure.

Fig. 18 is a schematic cross-sectional view of a microstructure.

Fig. 19 is a schematic cross-sectional view of a microstructure.

Fig. 20 is a schematic cross-sectional view of a microstructure.

Fig. 21 is a schematic cross-sectional view of a microstructure.

Fig. 22 is a schematic view of embodiment 1.

Fig. 23 is a schematic view of embodiment 2.

Fig. 24 is a schematic view of the present invention.

The functional layer 10, the microstructure 11, the first functional portion 111, the second functional portion 112, the microstructure main body 113, the light-transmitting portion 12, the base material layer 20, the base material layer 30, the light-absorbing layer 40, and the adhesive 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 to 24, the light-resistant projection screen of the present invention includes a functional layer 10, and further, may further include a substrate layer 20, a substrate layer 30, or a light-absorbing layer 40.

As shown in fig. 1 and 2, the functional layer 10 is used for imaging and for absorbing ambient light, which is a core layer of a light-resistant projection screen.

The size of the functional layer 10 is related to the size of the projection screen and its thickness can be set as desired.

The functional layer 10 includes a plurality of microstructures 11 and a light-transmitting portion 12 distributed between the microstructures 11 or outside the microstructures 11. In other words, a plurality of microstructures 11 are distributed at intervals in the functional layer 10, and light transmission portions 12 are arranged between the microstructures 11.

As shown in fig. 1 and 2, the light-transmitting portion 12 is made of a light-transmitting material, and allows light to pass therethrough. The light transmissive material includes, but is not limited to, a transparent material, a translucent material, and the like. In this embodiment, the transparent material is transparent colloid, such as UV glue, AB glue, etc., and is cured and molded by a curing process to form the transparent portion 12. In specific implementation, the microstructures 11 can be arranged by means of corresponding molds, then transparent colloid is poured, the transparent colloid forms the light transmission part 12 after being cured, and the cured transparent colloid wraps the whole of the microstructures 11 to form the functional layer 10; of course, the functional layer 10 may be formed by other processing techniques, and the microstructures 11 may be formed in the functional layer 10.

The microstructure 11 may be transparent or opaque as a whole, and may be disposed as required.

As shown in fig. 1 to 6, the microstructures 11 are in a long strip shape, and are distributed in the functional layer 10 at intervals in the transverse direction, which may be distributed along the width direction of the projection screen or along the height direction of the projection screen. When the microstructure 11 is an elongated shape as a whole, it may be arranged along a straight line or may be arranged along a non-straight line, for example, it may be an elongated shape that is wavy as a whole or an elongated shape that is arc-shaped as a whole. In this embodiment, the microstructures 11 are preferably distributed at intervals along the width direction of the projection screen. The arrangement mode of the micro-junctions can be set according to requirements. For example, the microstructures 11 may be spaced at equal intervals (as shown in fig. 1) or at unequal intervals; the arrangement of the microstructures 11, such as the inclined manner, the inclined angle, etc., may be the same (as shown in fig. 1) or different (as shown in fig. 2). In this embodiment, the microstructures 11 are preferably distributed at equal intervals and arranged in a uniform manner. In other embodiments, the arrangement of the microstructures 11 may be different according to different requirements, so as to satisfy different projection angle requirements.

As shown in fig. 3 to 6, the microstructure 11 is provided with at least a first functional portion 111 and a second functional portion 112 having different surface properties and being not coplanar. The surfaces B of the first functional portion 111 and the second functional portion 112 are different in color, wherein the first functional portion 111 is a reflective portion with a light color for reflecting light and improving the image brightness of the projection screen, and is made of a reflective material. The reflective material can be selected by referring to the known technology, and materials with the reflection function can be selected as the reflective material, such as reflective microbead materials, light-colored ink, metal paint and the like. The second functional portion 112 is a light absorbing portion, which has a dark color, for absorbing ambient light, and is made of a light absorbing material. The light absorbing material includes, but is not limited to, black ink, black paint, black colloid, black powder, or other dark colored material.

As shown in fig. 3 to 6, the first functional portion 111 and the second functional portion 112 are disposed along the longitudinal direction of the microstructure 11, in other words, the disposition direction of the first functional portion 111 and the second functional portion 112 is the same as the disposition direction of the microstructure 11 in the functional layer 10.

As shown in fig. 3 to 6, since the surface B properties of the first functional portion 111 and the second functional portion 112 of the microstructure 11 are different, the microstructure 11 is a composite structure processed by at least two materials, and includes a microstructure main body 113, the first functional portion 111, and the second functional portion 112. The microstructure body 113 may be transparent or opaque. The material of the first functional portion 111 may be the same as or different from that of the microstructure main body 113. The material of the second functional portion 112 may be the same as or different from the material of the microstructure main body 113. The first functional portion 111 may be integrally formed with the microstructure main body 113, or may be combined together; the second functional portion 112 may be integrally formed with the microstructure main body 113, or may be combined together.

In some embodiments, as shown in fig. 5, the microstructure main body 113 is made of a light reflecting material, and the surface formed by the microstructure main body 113 naturally has a light reflecting effect to form the first functional portion 111, and the surface formed by the microstructure main body 113 is coated/sprayed with a light absorbing material to form the second functional portion 112, where the first functional portion 111 and the microstructure main body 113 are an integrated structure, and the second functional portion 112 is a structure combined on the microstructure main body 113.

In some embodiments, as shown in fig. 6, the microstructure body 113 is made of a light absorbing material, and the surface thereof naturally has a light absorbing effect to form the second functional portion 112; the first functional portion 111 may be formed by coating/spraying a light reflecting material on a partial surface of the microstructure main body 113, in this case, the second functional portion 112 and the microstructure main body 113 are integrated, and the first functional portion 111 is a structure combined on the surface of the microstructure main body 113.

In the present embodiment, as shown in fig. 4, the microstructure main body 113 is made of a material different from the first functional portion 111 and the second functional portion 112, the first functional portion 111 is formed by coating/spraying a light reflecting material on the surface of the microstructure main body 113, and the second functional portion 112 is formed by coating/spraying a light absorbing material on the surface of the microstructure main body 113, in this case, the first functional portion 111 and the second functional portion 112 are both structures compounded on the surface of the microstructure main body 113.

The first functional portion 111 and the second functional portion 112 may be thin planar thin layers (as shown in fig. 4, 5, and 6) or non-planar thin layers. When the first functional portion 111 or the second functional portion 112 is a non-planar layer, it can be set to a desired shape, for example, a curved shape, an arc shape, a sawtooth shape, or a wave shape, such as a fresnel lens shape.

In general, it is preferable that the first functional portion 111 and the second functional portion 112 are planar thin layers for easy processing. When it is necessary to improve the functional properties of the projection screen, the first functional part 111 or the second functional part 112 may be provided in a desired shape as needed.

The cross-sectional shapes and sizes of the microstructures 11 in the functional layer 10 may be completely the same or not completely the same, and they may be set as required. In this embodiment, the cross-sectional shape and size of each microstructure 11 in the functional layer 10 are preferably uniform.

As shown in fig. 7 to 21, the cross-sectional shape of the microstructure 11 may be set as required, and includes, but is not limited to, a rectangle, a triangle, a trapezoid, a racetrack, a sector, and the like.

In some embodiments, as shown in fig. 7 to 10, a surface a of the first functional portion 111 and a surface B of the second functional portion 112 of the microstructure 11 are planar and parallel to each other, and a connection surface C connecting the surfaces of the first functional portion 111 and the second functional portion 112 may be a plane (as shown in fig. 7) or a non-plane (as shown in fig. 8 to 10). In this case, the cross-sectional shape of the microstructure 11 is rectangular, racetrack, or quasi-rectangular. The surface a of the first functional portion 111 and the surface B of the second functional portion 112 of each microstructure 11 are inclined to the surface of the functional layer 10 at an included angle, and the inclined angles are not limited and may be set as required. The inclination angles of the two sides of the frame are consistent and are also inconsistent.

In some embodiments, as shown in fig. 15 to 17, a surface a of the first functional portion 111 and a surface B of the second functional portion 112 of the microstructure 11 are planar and intersect with each other, and a connection surface C connecting the surface of the first functional portion 111 and the surface of the second functional portion 112 may be a plane (shown in fig. 15) or a non-plane (shown in fig. 16 and 17), in which case, the cross-sectional shape of the microstructure 11 is triangular, fan-shaped or triangle-like. The surface a of the first functional portion 111 and the surface B of the second functional portion 112 of each microstructure 11 are inclined to the surface of the functional layer 10 at an included angle, and the inclined angles are not limited and may be set as required. The inclination angles of the two sides of the frame are consistent and are also inconsistent. Preferably, the surface B of each second functional portion 112 is perpendicular to the surface of the functional layer 10, and the surface a of each first functional portion 112 is preferably inclined at an angle corresponding to the surface of the functional layer.

In some embodiments, as shown in fig. 11 to 14, a surface a of the first functional portion 111 and a surface B of the second functional portion 112 of the microstructure 11 are planar and are neither parallel to nor intersect with each other, and a connection surface C connecting the surfaces of the first functional portion 111 and the second functional portion 112 may be a plane (as shown in fig. 12 and 14) or a non-plane (as shown in fig. 11 and 14), in which case, the cross-sectional shape of the microstructure 11 is trapezoidal, quadrangular or quasi-quadrangular. The surface a of the first functional portion 111 and the surface B of the second functional portion 112 of each microstructure 11 are inclined to the surface of the functional layer 10 at an included angle, and the inclined angles are not limited and may be set as required.

In some embodiments, as shown in fig. 21, the surface a of the first functional portion 111 of the microstructure 11 is planar, and the surface B of the second functional portion 112 is non-planar, such as a combination of one or more of a curved surface, an arc surface, a wave, and a sawtooth; the connecting surface C connecting the surface of the first functional portion 111 and the surface of the second functional portion 112 may be a plane or a non-plane.

In some embodiments, as shown in fig. 18 to 20, the surface B of the second functional portion 112 of the microstructure 11 is planar, and the surface a of the first functional portion 111 is non-planar, such as a combination of one or more of a curved surface, an arc surface, a wave, and a sawtooth; the connecting surface C connecting the surface of the first functional portion 111 and the surface of the second functional portion 112 may be a plane (as shown in fig. 18 and 20) or a non-plane (as shown in fig. 19).

In some embodiments, the surface a of the first functional portion 111 and the surface B of the second functional portion 112 of the microstructure 11 are both non-planar, such as a combination of one or more of a curved surface, an arc surface, a wave, and a sawtooth; the connecting surface C connecting the surface of the first functional portion 111 and the surface of the second functional portion 112 may be a plane or a non-plane.

The size of the microstructure 11 can be set as required, in this embodiment, the thickness of the microstructure 11, i.e. the distance between the surface a of the first functional portion 111 and the surface B of the second functional portion 112, is 0.001MM to 1 MM; the width of the microstructure 11, i.e. the width of the first functional portion 111 or the second functional portion 112, is 0.1-10 mm.

Since the first functional portion 111 and the second functional portion 112 are not coplanar, they can act on light from different sources, so that the projected light incident on the surface of the first functional portion 111 can be reflected for imaging, and the ambient light incident on the surface of the second functional portion 112 can be absorbed. Thus, the functional layer 10 can be used both for reflective imaging and for absorbing ambient light. For convenience of describing the specific application and principle of the functional layer 10 in a light-resistant projection screen, the following description is given in terms of various embodiments:

example 1

As shown in fig. 22, the light-resistant projection screen of the present embodiment is a transparent holographic imaging film, which includes a substrate layer 20, a functional layer 10, and a substrate layer 30 in this order.

As shown in fig. 22, the substrate layer 20 is compounded on one side surface of the functional layer 10, and is used for protection, for improving the surface performance of the light-resistant projection screen, or for improving the surface hardness of the light-resistant projection screen. The substrate layer 20 is made of a transparent material, which allows light to pass through, and the material for making the substrate layer includes, but is not limited to, a PET material, a PVC material, an EVA material, a PC material, a PMMA material, a TPU material, a glass material, etc. The substrate layer 20 may be rigid non-rollable or may be flexible rollable. In this embodiment, the substrate layer 20 is preferably made of PET, and has good physical and mechanical properties, and is easy to recover after being rolled up, so that the flatness of the light-resistant projection screen can be maintained, the light-resistant projection screen is not deformed due to rolling up and unfolding for multiple times, and the commercial use value of the light-resistant projection screen is further improved.

The thickness of the substrate layer 20 can be set as required, and when the thickness is thin, the light-resistant projection screen is easy to roll and is a soft screen; when the thickness is thick, the light-resistant projection screen can not be rolled and is a hard screen.

As shown in fig. 22, the substrate layer 30 is laminated on the surface of the functional layer 10 opposite to the substrate layer 20. The substrate layer 30 is made of a transparent or translucent material, which includes, but is not limited to, glass, acryl, a transparent film, a release film, and the like. The substrate layer 30 may be a hard material or a soft material, and may be specifically disposed as needed. The substrate layer 30 is laminated on the surface of the functional layer 10 by a known method, for example, by adhering the substrate layer to the surface of the functional layer 10 by a transparent adhesive, wherein the transparent adhesive forms the adhesive layer 50.

For the present embodiment, the microstructure 11 in the functional layer 10 is light-transmissive as a whole, that is, the microstructure main body 113 is made of a light-transmissive material.

The entire light-resistant projection screen formed by the base material layer 20, the functional layer 10, and the base material layer 30 is transparent. Although the second functional portion 112 on the microstructure 11 is a dark light absorption structure, because the size of the microstructure 11 is very fine, the occupied size ratio of the microstructure 11 in the whole functional layer 10 is small, so that the human eye cannot easily detect the black lines on the light-resistant projection screen, and the light-resistant projection screen seen by the human eye is transparent as a whole when no projection light exists, and can be used for both front projection and rear projection, and can be used as a front projection screen or a rear projection screen according to the use place.

Since the light-resistant projection screen of the present embodiment is transparent as a whole, a user can view the light-resistant projection screen on both sides, that is, the user can view the light-resistant projection screen on both sides of the base material layer 20 and the base material layer 30. Since the functional layer 10 is provided with the microstructures 11, and the microstructures 11 are provided with the first functional portion 111 for reflecting light, which can be used for reflected imaging, the transparency and imaging effect of the light-resistant projection screen can be ensured.

The principle of the light-resistant projection screen is (taking a front projection as an example for explanation):

as shown in fig. 22, when the projection apparatus is disposed in front of the substrate layer 20, and the projection light emitted by the projection apparatus is incident on the light-resistant projection screen, and reaches the functional layer 10 after passing through the substrate layer 20, the incident light passes through the light-transmitting portion 12 and is incident on the surface a of the first functional portion 111 of the microstructure 11, and the incident light is reflected by the first functional portion 111 and is reflected toward the substrate layer 20, so as to be reflected into human eyes, and a user can view an image. And the ambient light, such as light, is generally shot into from the oblique top that is higher than projection equipment, and when the ambient light passes through substrate layer 20 and enters into functional layer 10, it is shot into and is absorbed on second functional unit 112 of micro-structure 11 to can't get into people's eye like projection light, and then can significantly reduce the interference of ambient light such as sunlight, light to the projection formation of image, thereby can improve the display effect of projection picture, improve contrast and luminance.

Because the whole light-resistant projection screen is transparent, a user can watch the projection picture formed on the light-resistant projection screen from the front side and the back side, and simultaneously, the user can watch the scene at the back side of the light-resistant projection screen by penetrating through the light-resistant projection screen.

Example 2

As shown in fig. 23, the light-resistant projection screen of the present embodiment is a projection screen of an electronic blackboard function, which includes a base material layer 20, a functional layer 10, and a light-absorbing layer 40 in this order.

As shown in fig. 23, the substrate layer 20 is compounded on one side surface of the functional layer 10, and is used for protection, for improving the surface performance of the light-resistant projection screen, or for improving the surface hardness of the light-resistant projection screen. The substrate layer 20 is made of a transparent material, which allows light to pass through, and the material for making the substrate layer includes, but is not limited to, a PET material, a PVC material, an EVA material, a PC material, a PMMA material, a TPU material, a glass material, etc. The substrate layer 20 may be rigid non-rollable or may be flexible rollable. In this embodiment, the substrate layer 20 is preferably made of PET, and has good physical and mechanical properties, and is easy to recover after being rolled up, so that the flatness of the light-resistant projection screen can be maintained, the light-resistant projection screen is not deformed due to rolling up and unfolding for multiple times, and the commercial use value of the light-resistant projection screen is further improved.

The thickness of the substrate layer 20 can be set as required, and when the thickness is thin, the light-resistant projection screen is easy to roll and is a soft screen; when the thickness is thick, the light-resistant projection screen can not be rolled and is a hard screen.

The microstructure 11 of the functional layer 10 is opaque as a whole, in other words, the microstructure main body 113 is made of an opaque material, for example, it can be made of a light absorbing material, including but not limited to black ink, black paint, black colloid, black powder or other dark materials.

As shown in fig. 23, the light absorbing layer 40 is laminated on the surface of the functional layer 10 opposite to the substrate layer 20. The light absorbing layer 40 is made of a light absorbing material including, but not limited to, black ink, black paint, black colloid, black powder, or other dark colored material. The light absorbing layer 40 may be a hard layer or a soft layer, and the thickness thereof may be set as desired.

The light absorbing layer 40 is formed by a process of compounding the light absorbing layer 40 on the surface of the functional layer 10, for example, by spraying a light absorbing material on the surface of the functional layer 10 by a spray coating process, according to a known technique.

As shown in fig. 23, the light absorbing layer 40 not only serves as a shielding surface to prevent light from passing through the back of the projection screen, but also prevents ambient light from passing through the back of the projection screen to the functional layer 10, and also serves to absorb ambient light incident from the front of the projection screen.

The light-resistant projection screen formed by the base material layer 20, the functional layer 10, and the light absorbing layer 40 exhibits the color of the light absorbing layer 40 as a whole, and the light absorbing layer 40 is generally made of a dark color material, and therefore, the light-resistant projection screen of the present embodiment exhibits a dark color as a whole. Although the first functional layer 10 on the microstructure 11 is a light-colored structure, since the size of the microstructure 11 is very small and the proportion of the first functional layer 10 in the whole structure is small, the dark color region that can be visually observed by human eyes is more than 70% of the area of the whole light-resistant projection screen, so that the whole light-resistant projection screen of the embodiment is dark in color, for example, black in vision. Thus, when no projection light exists, the projection screen seen by human eyes is in a dark color state, so that the projection screen can be used as a blackboard, and a user can use an oil pen on the surface of the blackboard and perform writing demonstration.

The light-resistant projection screen of the embodiment can be used for front projection, and the principle is as follows:

as shown in fig. 23, when the projection device is disposed in front of the substrate layer 20, and the projection light emitted by the projection device is incident on the light-resistant projection screen, and reaches the functional layer 10 after passing through the substrate layer 20, the incident light passes through the light-transmitting portion 12 and is incident on the surface a of the first functional portion 111 of the microstructure 11, and the incident light is reflected by the first functional portion 111 and is reflected toward the substrate layer 20, so as to be reflected into human eyes, and a user can view an image. Ambient light, such as lamp light, is generally incident from an oblique upper side above the projection device, and when the ambient light passes through the substrate layer 20 and enters the functional layer 10, the ambient light is incident on the second functional portion 112 of the microstructure 11 and is absorbed; in addition, because the light absorbing layer 40 also has a light absorbing function, when the ambient light which is not absorbed by the second functional portion 112 passes through the functional layer 10 and enters the light absorbing layer 40, the ambient light is absorbed by the light absorbing layer 40, so that most of the ambient light can be absorbed and cannot enter human eyes as projection light, and then the interference of ambient light such as sunlight and light on projection imaging can be greatly reduced, thereby improving the display effect of a projection picture and improving the contrast and the brightness. The light absorbing layer 40 can prevent light from passing through the back of the projection screen, and prevent ambient light from entering the functional layer 10, so that the contrast of the projection image can be greatly improved, and the display effect of the projection image is better. The light-resistant projection screen of the embodiment has a dark color when no projection light is emitted, can be used as a blackboard, has two purposes, and has strong practicability and commercial value.

In addition, in addition to the above embodiments, other functional layers 10 may be further provided as needed, for example, an anti-glare layer may be provided on the surface of the substrate layer 20 to reduce glare. The main point of the present invention is that the interval is provided with the microstructure 11 in the functional layer 10, and the microstructure 11 is provided with the first functional part 111 and the second functional part 112 with different surface properties, so that it can be used for reflection imaging and absorption of ambient light, so as to improve the imaging effect.

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 (17)

1. The utility model provides a light-resistant projection screen which characterized in that, it includes functional layer (10), be equipped with a plurality of micro-structure (11) at interval in functional layer (10), be light-permeable portion (12) between micro-structure (11), light-permeable portion (12) are made by the material that passes through, micro-structure (11) are equipped with first functional part (111) and second functional part (112) that the surface attribute is different at least, the surface B colour of first functional part (111) and second functional part (112) is different.

2. The light-resistant projection screen of claim 1, wherein the first functional portion (111) is a reflective portion having a light color for reflecting light; the second functional portion (112) is a light absorbing portion, which is dark in color, for absorbing ambient light.

3. The light-resistant projection screen of claim 1, wherein the first functional portion (111) is made of a light-reflecting material and the second functional portion (112) is made of a light-absorbing material.

4. The light-resistant projection screen of claim 1, wherein the microstructure (11) comprises a microstructure main body (113), a first functional portion (111) and a second functional portion (112), the first functional portion (111) and the second functional portion (112) are respectively disposed on the microstructure main body (113), and the first functional portion (111) and the second functional portion (112) are not coplanar.

5. The light-resistant projection screen of claim 4, wherein the microstructure body (113) is made of a light-reflecting material, the first functional portion (111) is integrally formed with the microstructure body (113), and the second functional portion (112) is formed by a light-absorbing material provided on a surface of the microstructure body (113).

6. The light-resistant projection screen of claim 4, wherein the micro-structured body (113) is made of a light-absorbing material, the second functional portion (112) is integrally formed with the micro-structured body (113), and the first functional portion (111) is formed by a light-reflecting material provided on a surface of the micro-structured body (113).

7. The light-resistant projection screen of claim 4, wherein the first functional portion (111) is formed by a light-reflecting material disposed on a surface of the microstructure body (113), and the second functional portion (112) is formed by a light-absorbing material disposed on a surface of the microstructure body (113).

8. A light-resistant projection screen according to claim 1, characterized in that the microstructures (11) are in the form of stripes which are distributed in the functional layer (10) at lateral intervals.

9. The light-resistant projection screen according to claim 1, characterized in that the surfaces B of the first (111) and second (112) functional parts are inclined at an angle to the surface of the functional layer (10), respectively.

10. The light-resistant projection screen of claim 1, wherein a substrate layer (20) is laminated on one side surface of the functional layer (10), and the substrate layer (20) is made of a light-transmitting material.

11. A light-resistant projection screen according to claim 1, characterised in that the microstructures (11) are light-transmissive, and a substrate layer (30) is applied to one side of the functional layer (10), the substrate layer (30) being made of a transparent or translucent material.

12. A light-resistant projection screen according to claim 1, characterized in that the microstructures (11) are light-impermeable, and a light-absorbing layer (40) is laminated on one side surface of the functional layer (10), the light-absorbing layer (40) being made of a light-absorbing material.

13. A light-resistant projection screen according to claim 12, wherein the light absorbing layer (40) is dark in color.

14. The light-resistant projection screen according to claim 1, characterized in that the surfaces B of the first (111) and second (112) functional parts are planar, the surface a of the first functional part (111) of each microstructure (11) being parallel to the outer surface of the second functional part (112) of the microstructure (11).

15. The light-resistant projection screen according to claim 1, characterized in that the surfaces B of the first (111) and second (112) functional parts are planar, and the surface a of the first functional part (111) of each microstructure (11) intersects the surface B of the second functional part (112) of the microstructure (11).

16. The light-resistant projection screen according to claim 1, wherein the surfaces B of the first functional portion (111) and the second functional portion (112) are planar, and the surface a of the first functional portion (111) of each microstructure (11) is not parallel to and does not intersect the surface B of the second functional portion (112) of the microstructure (11).

17. The light-resistant projection screen of claim 1, wherein the surface B of the first functional portion (111) or the second functional portion (112) is one or a combination of curved, arc, wave, and saw-tooth.

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