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CN110209007B - Reflective anti-light projection screen - Google Patents

Reflective anti-light projection screen Download PDF

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Publication number
CN110209007B
CN110209007B CN201910484057.6A CN201910484057A CN110209007B CN 110209007 B CN110209007 B CN 110209007B CN 201910484057 A CN201910484057 A CN 201910484057A CN 110209007 B CN110209007 B CN 110209007B
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CN
China
Prior art keywords
functional layer
light
microstructure
projection screen
layer
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CN201910484057.6A
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CN110209007A (en
Inventor
杨大海
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Shenzhen Zhenping Technology Development Co ltd
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Shenzhen Zhenping Technology Development Co ltd
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/54Accessories
    • G03B21/56Projection screens
    • G03B21/60Projection screens characterised by the nature of the surface

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

The utility model provides a reflective anti-light projection screen, its characterized in that includes first functional layer and second functional layer be equipped with a plurality of first microstructure in the middle of the first functional layer, be first printing opacity portion between the first microstructure be equipped with a plurality of second microstructure in the middle of the second functional layer, the second microstructure is equipped with the reflecting surface that is used for the reflection light, be second printing opacity portion between the second microstructure, first printing opacity portion and second printing opacity portion are made by printing opacity material. The reflective anti-light projection screen is internally provided with the first microstructure for absorbing light and the second microstructure for reflecting light, wherein the second microstructure is used for reflecting projection light so as to realize parallel light, reduce projection light loss, and the first microstructure is used for absorbing ambient light and reducing interference of the ambient light. The invention can greatly improve the display effect of the reflective anti-light projection screen and the contrast and brightness of the reflective anti-light projection screen.

Description

Reflective anti-light projection screen
[ Field of technology ]
The present invention relates to the field of projection, and more particularly, to a reflective anti-light projection screen capable of improving a projection display effect.
[ 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. As a liquid crystal screen for displaying images, in the case of large-size requirement, the liquid crystal screen has high cost and is not easy to carry and store, and can not be stored immediately when not in use; and the liquid crystal screen with the size larger than 50 inches is high in price, so that the liquid crystal screen is not beneficial to purchasing and using in ordinary families; in addition, when the liquid crystal screen is watched for a long time, human eyes are also easy to influence eyesight due to radiation, and the health of human bodies is not facilitated. However, compared with the liquid crystal screen, the projection screen with the same size has no problems, and has the advantages of low cost and low price compared with the liquid crystal screen with the same size, easy transportation, rolling and storage, and no influence on human health, so that the projection screen has wide application. However, existing projection screens are often subject to interference from ambient light when in use; when the ambient light is stronger, the projection picture becomes increasingly white and grey, so that the contrast of the projection picture cannot meet the requirement, and therefore, the audience cannot see clearly, and the basic demonstration effect is lost.
[ Invention ]
The present invention is directed to solving the above-mentioned problems, and provides a reflective anti-light projection screen capable of reducing projection light loss, reducing interference of ambient light, and improving projection display effect.
In order to achieve the above object, the present invention provides a reflective anti-light projection screen, which is characterized by comprising a first functional layer and a second functional layer, wherein a plurality of first microstructures are arranged in the first functional layer, a first light-transmitting part is arranged between the first microstructures, a plurality of second microstructures are arranged in the second functional layer, a reflecting surface for reflecting light is arranged between the second microstructures, a second light-transmitting part is arranged between the second microstructures, and the first light-transmitting part and the second light-transmitting part are made of light-transmitting materials.
Further, the first microstructure is made of a light absorbing material or the surface of the first microstructure is provided with the light absorbing material, and the first microstructure is used for absorbing light.
Further, the first microstructure and the second microstructure are respectively in a strip shape and are all arranged along the width direction of the reflective anti-light projection screen, and the first microstructure extends from one end of the first functional layer to the other end of the first functional layer along the width direction of the first functional layer; the second microstructure extends from one end of the second functional layer to the other end along the width direction.
Further, the first microstructure and the second microstructure are respectively in a strip shape, the first microstructure is arranged along the width direction of the reflective anti-light projection screen, the second microstructure is arranged along the height direction of the reflective anti-light projection screen, and the first microstructure extends from one end of the first functional layer to the other end of the first functional layer along the width direction of the first functional layer; the second microstructure extends from one end of the second functional layer to the other end along the height direction.
Further, a side of the first functional layer opposite to the second functional layer is a light emitting side LS, a side of the second functional layer opposite to the first functional layer is a light entering side RS, and the reflecting surface of the second microstructure is configured to reflect the projection light incident from the light entering side RS to the first functional layer and emit the projection light from the first light transmitting portion of the first functional layer to the light emitting side LS.
Further, the first functional layer and the second functional layer are integrally formed or compounded together.
Further, a third functional layer which is transparent is arranged between the first functional layer and the second functional layer.
Further, the third functional layer is an imaging layer or a light-transmitting layer.
Further, a substrate layer is provided on a surface of the first functional layer opposite to the second functional layer.
Further, a fourth functional layer is provided on a surface of the second functional layer opposite to the first functional layer.
Further, the fourth functional layer is a substrate layer or an imaging layer.
Further, a transparent third functional layer is arranged between the first functional layer and the second functional layer, and the third functional layer is an imaging layer; a substrate layer is arranged on the surface of one side of the first functional layer, which is opposite to the second functional layer; and a fourth functional layer is arranged on the surface of one side of the second functional layer, which is opposite to the first functional layer, and the fourth functional layer is a substrate layer.
Further, the first microstructure is perpendicular to the surface of the first functional layer, and the reflecting surface of the second microstructure is inclined with the surface of the second functional layer to form an included angle.
Further, the inclination angle between the reflecting surface of each second microstructure and the second functional layer is not completely consistent.
Further, each second microstructure is symmetrically distributed in the second functional layer.
The present invention has an advantageous contribution in that it effectively solves the above-mentioned problems. The reflective anti-light projection screen is internally provided with the first microstructure for absorbing light and the second microstructure for reflecting light, wherein the second microstructure is used for reflecting projection light so as to realize parallel light, reduce projection light loss, and the first microstructure is used for absorbing ambient light and reducing interference of the ambient light. The reflection type anti-light projection screen can improve the projection effect from two aspects of reducing interference light and reducing projection light loss, can greatly improve the display effect of the reflection type anti-light projection screen, and improves the contrast and brightness of the reflection type anti-light projection screen. The reflective anti-light projection screen can not only improve the contrast ratio during projection and ensure the display effect of projection pictures, but also is easy to process and manufacture, has strong practicability and commercial value, and is suitable for great popularization.
[ Description of the drawings ]
Fig. 1 is a cross-sectional view of the structure of the present invention.
Fig. 2 is a cross-sectional view of the structure of the present invention.
Fig. 3 is a cross-sectional view of the structure of the present invention.
Fig. 4 is a cross-sectional view of the structure of the present invention.
Fig. 5 is a top view of the structure of the present invention.
Fig. 6 is a schematic perspective view of the first microstructure and the second microstructure.
Fig. 7 is a schematic cross-sectional shape of the first microstructure and the second microstructure.
Fig. 8 is a schematic cross-sectional shape of the first microstructure and the second microstructure.
Fig. 9 is a schematic cross-sectional shape of the first microstructure and the second microstructure.
Fig. 10 is a schematic cross-sectional shape of a first microstructure and a second microstructure.
Fig. 11 is a schematic cross-sectional shape of the first microstructure and the second microstructure.
Fig. 12 is a schematic cross-sectional shape of the first microstructure and the second microstructure.
Fig. 13 is a schematic cross-sectional shape of the first microstructure and the second microstructure.
Fig. 14 is a schematic diagram of the principles of the present invention.
Fig. 15 is a schematic diagram of the principles of the present invention.
The first functional layer 10, the first microstructure 11, the first light-transmitting portion 12, the second functional layer 20, the second microstructure 21, the reflecting surface 211, the second light-transmitting portion 22, the third functional layer 30, the base material layer 40, the fourth functional layer 50, the light-emitting side LS, the light-entering side RS, the first functional surface a, the second functional surface B, and the connection surface C.
[ Detailed description ] of the invention
The following examples are further illustrative and supplementary of the present invention and are not intended to limit the invention in any way.
As shown in fig. 1 to 15, the main point of the reflective anti-light projection screen of the present invention is that the first microstructure 11 and the second microstructure 21 are disposed inside the reflective anti-light projection screen, wherein the first microstructure 11 is used for absorbing ambient light, and the second microstructure 21 is used for reflecting projection light, so that loss of projection light can be reduced, interference of the ambient light can be reduced, further display effect of the reflective anti-light projection screen can be improved, and brightness and contrast of the reflective anti-light projection screen can be improved.
Specifically, as shown in fig. 1 to 5, the reflective anti-light projection screen of the present invention includes a first functional layer 10 and a second functional layer 20. A plurality of first microstructures 11 are arranged in the first functional layer 10 at intervals, and a plurality of second microstructures 21 are arranged in the second functional layer 20 at intervals.
The first microstructure 11 is made of a light absorbing material or the surface of the first microstructure 11 is provided with a light absorbing material for absorbing ambient light. The light absorbing material includes, but is not limited to, black ink, black paint, black colloid, black powder, or other dark colored materials.
The second microstructure 21 is configured to reflect light, and is provided with a reflecting surface 211 for reflecting light. In some embodiments, the second microstructure 21 may be made of a material having a reflective effect, and the surface thereof forms the reflective surface 211, which may be used to reflect light. In some embodiments, a reflective material having a reflective effect may also be plated on the surface of the second microstructure 21, so as to form the reflective surface 211 on the surface of the second microstructure 21. The material with reflecting effect can be selected by referring to the known technology.
As shown in fig. 1 to 5, the first functional layer 10 includes a plurality of first microstructures 11 and first light-transmitting portions 12 distributed between the first microstructures 11 or outside the first microstructures 11. The first light-transmitting portion 12 is made of a light-transmitting material, which allows light to transmit therethrough.
As shown in fig. 1 to 5, the second functional layer 20 includes a plurality of second microstructures 21 and second light-transmitting portions 22 distributed between the second microstructures 21 or outside the second microstructures 21. The second light-transmitting portion 22 is made of a light-transmitting material, which allows light to transmit therethrough.
The light transmissive material includes, but is not limited to, transparent materials, translucent materials, and the like. In this embodiment, the transparent material is selected from transparent glue, such as UV glue, AB glue, etc., and is cured and formed by a curing process to form the first transparent portion 12 and the second transparent portion 22. In specific implementation, the first microstructure 11 and the second microstructure 21 can be well arranged by means of corresponding dies, then transparent colloid is poured, the transparent colloid is solidified to form a first light-transmitting part 12 and a second light-transmitting part 22, and the solidified transparent colloid wraps the whole of the first microstructure 11 to form the first functional layer 10; the cured transparent colloid wraps the whole of the second microstructure 21, so as to form the second functional layer 20. Of course, the first functional layer 10 and the second functional layer 20 may be formed by other processing processes by those skilled in the art.
The first functional layer 10 and the second functional layer 20 are functionally differentiated, and the first functional layer 10 and the second functional layer 20 are respectively different functional structure layers according to different functions; in terms of physical structure, the first functional layer 10 and the second functional layer 20 may be one layer or two layers. As shown in fig. 2, when the first functional layer 10 and the second functional layer 20 are physically formed as one layer, the first functional layer 10 and the second functional layer 20 are integrally formed, and there is no physical interface between the first functional layer 10 and the second functional layer 20. As shown in fig. 1, when the first functional layer 10 and the second functional layer 20 are physically two layers, a physical interface exists between the first functional layer 10 and the second functional layer 20.
In some embodiments, as shown in fig. 1 and 2, the reflective anti-light projection screen may include only the first functional layer 10 and the second functional layer 20, which may be formed by integrally forming the first functional layer 10 and the second functional layer 10 of one physical layer structure (as shown in fig. 2), or may be formed by combining the first functional layer 10 and the second functional layer 20 of two physical layers (as shown in fig. 1).
In some embodiments, as shown in fig. 3, the reflective anti-light projection screen may include a first functional layer 10, a second functional layer 20, and a third functional layer 30 disposed between the first functional layer 10 and the second functional layer 20. The third functional layer 30 is an imaging layer for projection imaging, which is provided between the first functional layer 10 and the second functional layer 20, and which is made of an imaging material. The third functional layer 30 may be formed by compounding an imaging film between the first functional layer 10 and the second functional layer 20, or may be formed by spraying or rolling an imaging paint on the surface of the first functional layer 10 or the second functional layer 20. The specific material type of the imaging layer is not limited, and may be set according to practical application requirements.
In some embodiments, as shown in fig. 4 and 5, the reflective anti-light projection screen includes a substrate layer 40, a first functional layer 10, a third functional layer 30, a second functional layer 20, and a fourth functional layer 50. The substrate layer 40 is disposed on a surface of the first functional layer 10 opposite to the second functional layer 20, and is used for protecting, improving surface performance of the reflective anti-light projection screen, or improving surface hardness of the reflective anti-light projection screen. The third functional layer 30 is disposed between the first functional layer 10 and the second functional layer 20, and is an imaging layer for projection imaging, and is made of an imaging material, and the specific material type thereof is not limited, and may be set according to actual needs. The fourth functional layer 50 is disposed on a surface of the second functional layer 20 opposite to the first functional layer 10, and is also a substrate layer for protecting, for improving the back surface performance of the reflective anti-light projection screen, or for improving the surface hardness of the reflective anti-light projection screen. In this embodiment, the counter-type light-resistant projection screen is preferably of such a structure that not only facilitates processing but also is more excellent in imaging effect.
In some embodiments, as shown in fig. 4 and 5, the reflective anti-light projection screen includes a substrate layer 40, a first functional layer 10, a third functional layer 30, a second functional layer 20, and a fourth functional layer 50. The substrate layer 40 is disposed on a surface of the first functional layer 10 opposite to the second functional layer 20, and is used for protecting, improving surface performance of the reflective anti-light projection screen, or improving surface hardness of the reflective anti-light projection screen. The third functional layer 30 is disposed between the first functional layer 10 and the second functional layer 20, and is a light-transmitting layer for transmitting light, and is made of a light-transmitting material. The fourth functional layer 50 is disposed on a side surface of the second functional layer 20 opposite to the first functional layer 10, which is an imaging layer for projection imaging, and is made of an imaging material. The fourth functional layer 50 may be formed by compounding an imaging film on the surface of the second functional layer 20 opposite to the first functional layer 10, or may be formed by forming an imaging paint on the surface of the second functional layer 20 opposite to the first functional layer 10 by spraying, rolling, or the like. The specific material type of the fourth functional layer 50, the imaging layer, is not limited, and may be set according to practical application requirements.
In some embodiments, the reflective anti-light projection screen includes, in order, a substrate layer 40, a first functional layer 10, a second functional layer 20, and a fourth functional layer 50. The substrate layer 40 is disposed on a surface of the first functional layer 10 opposite to the second functional layer 20, and is used for protecting, improving surface performance of the reflective anti-light projection screen, or improving surface hardness of the reflective anti-light projection screen. The fourth functional layer 50 is disposed on a side surface of the second functional layer 20 opposite to the first functional layer 10, which is an imaging layer for projection imaging, and is made of an imaging material. The fourth functional layer 50 may be formed by compounding an imaging film on the surface of the second functional layer 20 opposite to the first functional layer 10, or may be formed by forming an imaging paint on the surface of the second functional layer 20 opposite to the first functional layer 10 by spraying, rolling, or the like. The specific material type of the fourth functional layer 50, the imaging layer, is not limited, and may be set according to practical application requirements.
The substrate layer of the present invention is transparent, allowing light to pass through, and the manufacturing materials include, but are not limited to, PET, PVC, EVA, PC, PMMA, TPU, glass, etc. In this embodiment, the substrate layer is preferably made of PET, and has good physical and mechanical properties, and is easy to recover after being rolled, so that the flatness of the reflective anti-light projection screen can be maintained, the reflective anti-light projection screen cannot be deformed due to repeated rolling and unfolding, and the commercial use value of the reflective anti-light projection screen is further improved.
The thickness of the substrate layer can be set according to the requirement, and when the thickness of the substrate layer is thinner, the reflective anti-light projection screen is easy to roll up to form a soft screen; when the thickness is thicker, the reflective anti-light projection screen cannot be rolled up to be a hard screen.
For convenience of description, as shown in fig. 14 and 15, a side on which projection light is incident is an incident side RS and a side on which a viewer views is an outgoing side LS with reference to a direction of projection in use. In this embodiment, a side of the first functional layer 10 opposite to the second functional layer 20 is a light emitting side LS, and a side of the second functional layer 20 opposite to the first functional layer 10 is a light entering side RS. In other words, the first functional layer 10 is directed towards the viewer and the second functional layer 20 is directed away from the viewer towards the projection device. The second microstructure 21 in the second functional layer 20 can reflect the projection light incident from the light incident side RS to the first functional layer 10 by the reflecting surface 211, and can be emitted from the first light transmitting portion 12 in the first functional layer 10 to the light emitting side LS.
The first microstructure 11 and the second microstructure 21 are respectively disposed in the first functional layer 10 and the second functional layer 20 at intervals, and the specific arrangement manner thereof can be set as required:
as shown in fig. 4, in some embodiments, the first microstructure 11 and the second microstructure 21 are respectively elongated, and are all disposed along the width direction of the reflective anti-light projection screen, and the first microstructure 11 extends from one end of the first functional layer 10 along the width direction thereof to the other end thereof; the second microstructure 21 extends from one end of the second functional layer 20 to the other end thereof along the width direction thereof. The width direction of the reflective anti-light projection screen refers to the direction in which the reflective anti-light projection screen is parallel to the horizontal plane when it is in normal use. When the first microstructures 11 and the second microstructures 21 extend in the width direction, the extending means that the whole of the first microstructures extends in one direction, but the first microstructures are not limited to be linearly extending, and may or may not extend in a straight line, for example, extend in a curve.
As shown in fig. 5, in some embodiments, the first microstructures 11 and the second microstructures 21 are respectively elongated, the first microstructures 11 are disposed along the width direction of the reflective anti-light projection screen, the second microstructures 21 are disposed along the height direction of the reflective anti-light projection screen, and the first microstructures 11 extend from one end of the first functional layer 10 along the width direction thereof to the other end thereof; the second microstructure 21 extends from one end of the second functional layer 20 to the other end thereof along the height direction thereof. The width direction of the reflective anti-light projection screen refers to the direction parallel to the horizontal plane when the reflective anti-light projection screen is used normally; the height direction of the reflective anti-light projection screen refers to the direction perpendicular to the horizontal plane when the reflective anti-light projection screen is in normal use. When the first microstructures 11 and the second microstructures 21 extend in the width and height directions, the extending means that the whole of the first microstructures extends in one direction, but the first microstructures are not limited to be linearly extending, and may or may not extend in a straight line, for example, may extend in a curve.
When the first microstructures 11 and the second microstructures 21 are both disposed along the width direction of the reflective anti-light projection screen, as shown in fig. 4, in order to enable the projection light to exit from the first light-transmitting portion 12 in the first functional layer 10, the first microstructures 11 and the second microstructures 21 should be disposed in a staggered manner, in other words, the first microstructures 11 and the second microstructures 21 should be distributed at different levels of the reflective anti-light projection screen.
For better absorption of ambient light, the first microstructures 11 are preferably perpendicular to the surface of the first functional layer 10, i.e. the first microstructures 11 are vertically distributed in the first functional layer 10. The distance between the first microstructures 11 may be set as required, and may be equally spaced or non-equally spaced. In this embodiment, the first microstructures 11 are preferably distributed in the first functional layer 10 at equal intervals.
For better reflection of the projected light, the reflective surface 211 of the second microstructure 21 is preferably arranged at an angle to the surface inclination of the second functional layer 20. The inclination angles of the reflecting surfaces 211 of the second microstructures 21 may be the same or different, and may be set as needed. In general, the projection light is emitted from a fixed-position projection device, the angles of the projection light at different positions of the second functional layer 20 are not always identical, and for better reflecting the projection light, the inclination angle of the reflecting surface 211 of the second microstructure 21 is preferably set according to the incident angle, so that when the projection light is incident on the reflecting surface 211, the reflecting surface 211 can reflect the projection light in a direction parallel to the horizontal plane, so as to obtain parallel light, and reduce the loss of the projection light.
The second microstructures 21 are spaced apart from each other in the second functional layer 20, and the distance between the second microstructures may be set as required, and may be equally spaced apart or equally spaced apart. In this embodiment, the second microstructures 21 are preferably symmetrically distributed in the second functional layer 20, so that the projection device is conveniently placed in the middle on the light incident side RS of the reflective anti-light projection screen.
As shown in fig. 6, the first microstructure 11 and the second microstructure 21 are elongated, and the cross-sectional shape thereof may be set as needed. Specifically, the first microstructure 11 and the second microstructure 21 are respectively provided with a first functional surface a and a second functional surface B extending along the length and width directions thereof. The first functional surface a and the second functional surface B may be planar or non-planar, for example, when the first microstructure 11 and the second microstructure 21 do not extend in a straight direction, the first functional surface a and the second functional surface B may be non-planar, but may be curved or curved surfaces or the like.
In some embodiments, as shown in fig. 7 and 8, the first functional surface a and the second functional surface B are parallel, and the end surfaces of the first functional surface a and the second functional surface B are respectively connected through a connecting surface C. The connecting surface C can be a plane or an arc surface. As shown in fig. 7, when the connection surface C is a plane, the cross sections of the first microstructure 11 and the second microstructure 21 are rectangular, and the first microstructure 11 and the second microstructure 21 are regular long strips; as shown in fig. 8, when the connection surface C is an arc surface, the cross sections of the first microstructure 11 and the second microstructure 21 are racetrack-shaped, and the first microstructure 11 and the second microstructure 21 are elongated with arc edges.
In some embodiments, as shown in fig. 9, 10 and 11, the first functional surface a and the second functional surface B are not parallel, the distance between one ends of the first functional surface a and the second functional surface B is not equal to the distance between the other ends of the first functional surface a and the second functional surface B, and the ends of the first functional surface a and the second functional surface B are respectively connected through a connecting surface C. The connecting surface C can be a plane or an arc surface. As shown in fig. 9 and 11, when the connection surface C is a plane, the cross sections of the first microstructure 11 and the second microstructure 21 are trapezoidal, and the first microstructure 11 and the second microstructure 21 are long strips with a thin side and a thick side. When the connection surface C is a cambered surface, as shown in fig. 10, the cross sections of the first microstructure 11 and the second microstructure 21 are trapezoid-like, and the first microstructure 11 and the second microstructure 21 are long strips which are thin and thick at one side and smoothly transition at the edge.
In some embodiments, as shown in fig. 12 and 13, one end of the first functional surface a and one end of the second functional surface B are collinear, and the other end is spaced apart and joined by a connecting surface C. When the connection surface C is a plane, as shown in fig. 12, the cross sections of the first microstructure 11 and the second microstructure 21 are triangular, and the first microstructure 11 and the second microstructure 21 are triangular long strips. When the connection surface C is a cambered surface, as shown in fig. 13, the cross sections of the first microstructure 11 and the second microstructure 21 are fan-shaped.
In other embodiments, the first functional surface a, the second functional surface B, and the connection surface C may be configured in other forms.
In this embodiment, as shown in fig. 7 and 8, the cross sections of the first microstructure 11 and the second microstructure 21 are preferably rectangular or trapezoidal.
The length L of the first microstructure 11 and the second microstructure 21 is related to the size of the reflective anti-light projection screen, the thickness T and the width W of the first microstructure 11 and the second microstructure 21 may be set according to the requirement, in this embodiment, the thickness of the first microstructure 11 and the second microstructure 21 is preferably 0.001MM to 1MM, the width of the first microstructure 11 and the second microstructure 21 is preferably 0.1MM to 10MM, in other words, the distance between the first functional surface a and the second functional surface B is 0.001MM to 1MM, and the width of the first functional surface a or the second functional surface B is in the range of 0.1MM to 10MM.
The first microstructure 11 and the second microstructure 21 may be integrally formed structures, or may be composite layer structures, which may be specifically set according to needs. In this embodiment, the first microstructure 11 is integrally made of a light-absorbing material, and the second microstructure 21 is integrally made of a light-reflecting material having a reflecting effect. In other embodiments, the first microstructure 11 may also be a composite layer structure, and the surface of the composite layer structure is covered with a light-absorbing material; the second microstructure 21 may also be a composite layer structure, and its surface is covered with a reflective material having a reflective effect.
Thus, the reflection type anti-light projection screen is formed, and the working principle is as follows:
In use, as shown in fig. 14 and 15, the projection device is disposed on the light incident side RS of the reflective anti-light projection screen, i.e., the rear side of the second functional layer 20; the viewer and the ambient light are located on the light exit side LS of the reflective anti-light projection screen, i.e. the front side of the first functional layer 10. When the projection light emitted from the projection device is incident on the second functional layer 20, the projection light is reflected by the reflection surface 211 of the second microstructure 21 and is reflected in the horizontal direction toward the first functional layer 10, and the reflected light passes through the first light-transmitting portion 12 of the first functional layer 10 and is incident on the visual range of the viewer, so that the viewer can view the projection screen. As shown in fig. 14, when the ambient light at the light emitting side LS is incident on the first functional layer 10, the ambient light is absorbed by the first microstructure 11, so that the ambient light cannot enter the human eyes as the projection light, and the interference of the ambient light such as sunlight and lamplight on the projection can be greatly reduced, so that the display effect of the projection picture can be improved, and the contrast and brightness of the picture can be improved. The projected light is reflected by the second microstructure 21, which can realize parallel light, reduce the loss of the projected light, and also facilitate the improvement of the brightness of the projected image.
Although the present invention has been disclosed by the above embodiments, the scope of the present invention 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 invention.

Claims (14)

1. A reflective anti-light projection screen, characterized in that it comprises a first functional layer (10) and a second functional layer (20), a plurality of first microstructures (11) being arranged in the middle of the first functional layer (10), the first microstructures being intended to absorb light; a first light-transmitting part (12) is arranged between the first microstructures (11), a plurality of second microstructures (21) are arranged in the middle of the second functional layer (20), the second microstructures (21) are provided with reflecting surfaces (211) for reflecting light rays, a second light-transmitting part (22) is arranged between the second microstructures (21), and the first light-transmitting part (12) and the second light-transmitting part (22) are made of light-transmitting materials;
The side of the first functional layer (10) opposite to the second functional layer (20) is a light emitting side LS, the side of the second functional layer (20) opposite to the first functional layer (10) is a light entering side RS, and the reflecting surface (211) of the second microstructure (21) is used for reflecting the projection light incident from the light entering side RS to the first functional layer (10) in a direction parallel to the horizontal plane to form parallel light and emitting the parallel light to the light emitting side LS through the first light transmitting part (12) of the first functional layer (10).
2. A reflective anti-light projection screen according to claim 1, characterized in that the first microstructure (11) is made of a light absorbing material or the surface of the first microstructure (11) is provided with a light absorbing material.
3. The reflective anti-light projection screen according to claim 1, wherein the first microstructure (11) and the second microstructure (21) are respectively elongated, each of which is arranged along the width direction of the reflective anti-light projection screen, and the first microstructure (11) extends from one end of the first functional layer (10) along the width direction thereof to the other end thereof; the second microstructure (21) extends from one end of the second functional layer (20) to the other end thereof along the width direction thereof.
4. The reflective anti-light projection screen according to claim 1, wherein the first microstructure (11) and the second microstructure (21) are elongated, respectively, the first microstructure (11) being arranged in a width direction of the reflective anti-light projection screen, the second microstructure (21) being arranged in a height direction of the reflective anti-light projection screen, the first microstructure (11) extending from one end of the first functional layer (10) in the width direction thereof to the other end thereof; the second microstructure (21) extends from one end of the second functional layer (20) to the other end thereof along the height direction thereof.
5. A reflective anti-light projection screen according to claim 1, characterized in that the first functional layer (10) and the second functional layer (20) are integrally formed or are composited together.
6. A reflective anti-light projection screen according to claim 1, characterized in that a third functional layer (30) in the form of a transparent is provided between the first functional layer (10) and the second functional layer (20).
7. The reflective, anti-light projection screen of claim 6, wherein the third functional layer (30) is an imaging layer or a light transmissive layer.
8. A reflective anti-light projection screen according to claim 1, characterized in that a substrate layer (40) is provided on the surface of the first functional layer (10) on the side opposite to the second functional layer (20).
9. A reflective anti-light projection screen according to claim 1, characterized in that a fourth functional layer (50) is provided on the side surface of the second functional layer (20) opposite to the first functional layer (10).
10. The reflective, anti-light projection screen of claim 9, wherein the fourth functional layer (50) is a substrate layer or an imaging layer.
11. A reflective anti-light projection screen according to claim 1, characterized in that a third functional layer (30) in the form of a transparent is provided between the first functional layer (10) and the second functional layer (20), the third functional layer (30) being an imaging layer; a substrate layer (40) is provided on the surface of the first functional layer (10) on the opposite side to the second functional layer (20); a fourth functional layer (50) is provided on the surface of the second functional layer (20) opposite to the first functional layer (10), and is a base material layer.
12. A reflective anti-light projection screen according to claim 1, characterized in that the first microstructure (11) is perpendicular to the surface of the first functional layer (10), and the reflective surface (211) of the second microstructure (21) is inclined at an angle to the surface of the second functional layer (20).
13. A reflective anti-light projection screen according to claim 12, characterized in that the angle of inclination between the reflective surface (211) of each second microstructure (21) and the second functional layer (20) is not exactly identical.
14. A reflective anti-light projection screen according to claim 13, characterized in that each second microstructure (21) is symmetrically distributed in the second functional layer (20).
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