CN117970537A - Short-focus linear light-resistant film and preparation method thereof - Google Patents

Short-focus linear light-resistant film and preparation method thereof Download PDF

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Publication number
CN117970537A
CN117970537A CN202410389468.8A CN202410389468A CN117970537A CN 117970537 A CN117970537 A CN 117970537A CN 202410389468 A CN202410389468 A CN 202410389468A CN 117970537 A CN117970537 A CN 117970537A
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layer
short
resistant film
preparing
black
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刘太龙
张保平
纪诺
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Zhongke Baoyi Vision Technology Jiangsu Co ltd
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Zhongke Baoyi Vision Technology Jiangsu Co ltd
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10Optical coatings produced by application to, or surface treatment of, optical elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • G02B5/0205Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/18Diffraction gratings
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/20Filters
    • G02B5/22Absorbing filters

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

The application discloses a short-focus linear light-resistant film and a preparation method thereof, wherein the short-focus linear light-resistant film comprises a base layer, an anti-dazzle halation layer and a grating structure layer, the base layer comprises a base material layer, and a first adhesion promotion base coat and a second adhesion promotion base coat are respectively arranged on two sides of the base material layer; the optical prism units comprise an upper right-angle surface, a lower inclined surface and a bottom surface, a black light absorption layer is arranged on the upper right-angle surface, and a white reflecting layer is arranged on the lower inclined surface. Compared with the prior art, the application has the advantages that: according to the application, the black light absorption layer and the white reflecting layer are arranged on the grating structure layer, so that the influence of ambient light on the projection effect is effectively reduced, the contrast ratio and the display effect of a projection picture are improved, and the projection picture is ensured to be clearer, so that the short-focus linear light-resistant film has excellent performance and application prospect in the technical field of projection.

Description

Short-focus linear light-resistant film and preparation method thereof
Technical Field
The application relates to the field of projection screens, in particular to a short-focus linear light-resistant film and a preparation method thereof.
Background
With the rapid development of projection technology, projection equipment is increasingly widely applied in the fields of home entertainment, business demonstration and the like. However, the projection screens on the existing market are mainly focused on mid-tele and super-tele projectors, and there is a lack of effective solutions for dedicated screens for short-tele projectors, especially for short-tele projectors with a throw ratio of 0.40-0.55, and there is almost no corresponding product on the market at present. This situation limits the application of short-focus projection technology in small spaces, affecting the user's experience of obtaining high quality projection effects in limited spaces.
Currently, most of the projection screens on the market use white or gray reflective screens to increase the contrast and brightness of the projected image. However, these screens are very sensitive to ambient light and are susceptible to interference from ambient light sources, resulting in reduced visibility and quality of the projected picture. These conventional screens often fail to provide satisfactory projection in environments where the light is intense, such as daytime or lighted environments.
In addition, the existing short-focus projection screen has a relatively simple structure, and high-quality display of a projection picture is difficult to realize. Especially at the edges or corners of the projected picture, refraction and reflection of light often lead to distortion or blurring of the image, further reducing the user's viewing experience.
In summary, the prior art has many problems in short-focus projector applications, including poor applicability, high illumination sensitivity, distortion of images, and the like. Therefore, a novel short-focus linear light-resistant film is needed to solve the defects in the prior art and improve the applicability and user experience of the short-focus projector.
Disclosure of Invention
The application aims to overcome the technical defects and provide a short-focus linear light-resistant film and a preparation method thereof.
In order to solve the technical problems, the first technical scheme provided by the application is as follows: a short focal line light resistant film comprising: the base layer comprises a substrate layer, and a first adhesion promoting base coat and a second adhesion promoting base coat are respectively arranged on two sides of the substrate layer; an antiglare halo layer disposed on a side of the first adhesion promoting primer layer remote from the substrate layer; the grating structure layer is arranged on one side, far away from the substrate layer, of the second adhesion promoting base coating, the grating structure layer is formed by arranging a plurality of optical prism units with triangular cross sections in the horizontal direction, each optical prism unit comprises an upper right-angle surface, a lower inclined surface and a bottom surface, the bottom surface is arranged on the second adhesion promoting base coating, a first included angle is formed between the lower inclined surface and the bottom surface, a second included angle is formed between the upper right-angle surface and the lower inclined surface, a black light absorption layer is arranged on the upper right-angle surface, and a white reflecting layer is arranged on the lower inclined surface.
Further, the first included angle is 15-18 degrees, and the second included angle is 72-75 degrees.
Further, the base material layer is an optical grade BOPET film with a thickness of 100 μm.
Further, the first adhesion promoting primer layer and the second adhesion promoting primer layer are made of an aqueous environmental protection primer.
Further, the grating structure layer is made of an optical grade high-transmittance resin, and the grating structure layer is adhered to one side of the second adhesion promoting primer layer away from the substrate layer.
Further, the black light absorption layer is formed by adopting black matte paint with high coverage rate.
Further, the anti-dazzle and halation layer is made of black matte paint with high coverage rate and has a thickness of 100 mu m.
Further, the white reflecting layer is formed by adopting a high-hiding rate matte white paint.
A second object of the present invention is to provide a method of short focal line light resistant film comprising the steps of:
S1, preparing a base layer, which specifically comprises the following steps:
S11, selecting a substrate layer:
selecting an optical BOPET film with the thickness of 100 mu m as a base material layer, and placing the base material layer in a dry and dust-free environment;
s12, preparing a first adhesion promotion base coat:
Stirring the aqueous environment-friendly primer to ensure uniformity;
uniformly coating water-based environment-friendly paint on the substrate layer by using a micro-gravure roll coater;
drying at a temperature of 25 ℃ to 35 ℃ to ensure complete curing of the primer layer to form a first adhesion promoting primer layer on the surface of the substrate layer;
s13, preparing a second adhesion promotion base coat:
Repeating the step S12, coating the water-based environment-friendly paint on the other side of the substrate layer, and ensuring that the primer layer is completely cured so as to form a second adhesion promoting primer layer on the other surface of the substrate layer;
S2, preparing an anti-dazzle corona layer, which comprises the following specific steps:
preparing black matte paint with high coverage rate, and dispersing and stirring at high speed to fully and uniformly mix the black matte paint;
Uniformly coating a high-coverage black matte coating on one side of the first adhesion promoting primer layer far away from the substrate layer;
Curing to form an anti-glare halo layer;
S3, preparing a grating structure layer, which comprises the following specific steps:
S31, preparing an optical prism unit:
curing the optical-grade high-transmittance resin in a prepared linear grating structure mold to ensure that the angle of the grating is free from errors after curing, and forming a plurality of optical prism units side by side at one time;
s32, preparing a black light absorption layer:
preparing black matte paint, adding nanoscale titanium dioxide and black paste, and ensuring full and uniform mixing;
uniformly coating black matte paint on the upper right-angle surface of the optical prism unit by using a coating mode, and then curing and rolling to form a black light absorption layer;
S33, preparing a white reflecting layer:
Preparing a matte white coating, and adding nanoscale titanium dioxide and silicon dioxide into acrylic acid or polyurethane emulsion to ensure full and uniform mixing;
Uniformly coating matte white paint on the lower inclined surface of the optical prism unit by using a coating mode, and then curing and rolling to form a white reflecting layer to obtain a grating structure layer;
S4, forming a short-focus linear light-resistant film:
and (3) carrying out composite imprinting on the grating structure layer and the second adhesion promoting primer layer to obtain the short-focus linear light-resistant film.
Compared with the prior art, the application has the advantages that: first, by providing the first adhesion promoting primer layer and the second adhesion promoting primer layer in the base layer and using the optical high-transmittance resin in the grating structure layer, the adhesion and transparency of the film are effectively improved, contributing to reduction of light loss, and thus improving brightness and sharpness of the projected picture.
And secondly, the first included angle and the second included angle of the optical prism units of the grating structure layer are adjusted, so that the product is suitable for a short-focus projector with the projection ratio of 0.40-0.55. The adjustment is customized according to the optical refraction principle, so that the product can obtain good projection effect in the short-focus projector under the adjustment of different angles.
In addition, the optical BOPET film with the thickness of 100 mu m is selected as a base material layer, so that the optical BOPET film has high transparency and meets the haze requirement, and meanwhile, the negative influence of excessive thinness and excessive thickness on the elasticity and cost of the product is avoided. The water-based environment-friendly primer is used as the material of the first adhesion promoting primer layer and the second adhesion promoting primer layer, so that the adhesion is ensured, the requirements of environmental protection and health safety are met, and the support is provided for the sustainable development of products.
In addition, through setting up black light-absorbing layer and white reflection stratum on grating structure layer, effectively reduced the influence of ambient light to the projection effect, improved the contrast and the display effect of projection picture. The anti-glare halo layer further reduces interference of back ambient light, and ensures that a projection picture is clearer, so that the short-focus linear light-resistant film has excellent performance and application prospect in the technical field of projection.
Drawings
Fig. 1 is a schematic structural view of a short focal line light-resistant film according to the present application.
FIG. 2 is a schematic view of a portion of a short focal length light resistant film of the present application.
Fig. 3 is an enlarged schematic view of the grating structure layer in the short-focus linear light-resistant film of the present application.
As shown in the figure: 1. the first adhesion promoting primer layer, 2, the substrate layer, 3, the second adhesion promoting primer layer, 4, the antiglare layer, 5, the grating structure layer, 51, the optical prism unit, 51a, the upper right angle surface, 51b, the lower inclined surface, 51c, the bottom surface, 52, the black light absorption layer, 53 and the white reflection layer.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention. The examples are not to be construed as limiting the specific techniques or conditions described in the literature in this field or as per the specifications of the product. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In one aspect of the present invention, referring to fig. 1 to 3, according to an embodiment of the present invention, a short focal linear light-resistant film is provided, where the short focal linear light-resistant film includes a base layer, an anti-glare halo layer 4, and a grating structure layer 5, the base layer includes a substrate layer 2, a first adhesion promoting primer layer 1 and a second adhesion promoting primer layer 3 are disposed on two sides of the substrate layer 2, respectively, and the anti-glare halo layer 4 is disposed on a side of the first adhesion promoting primer layer 1 away from the substrate layer 2, where the anti-glare halo layer 4 can reduce interference of ambient light on projection imaging, and can effectively improve display effects of projection images; the grating structure layer 5 is disposed on a side of the second adhesion promoting primer layer 3 away from the substrate layer 2, as shown in fig. 2, where the grating structure layer 5 is formed by arranging a plurality of optical prism units 51 with triangular cross sections in horizontal directions, the optical prism units 51 include an upper right angle surface 51a, a lower inclined surface 51b, and a bottom surface 51c, the bottom surface 51c is disposed on the second adhesion promoting primer layer 3, a first included angle α1 is formed between the lower inclined surface 51b and the bottom surface 51c, a second included angle α2 is formed between the upper right angle surface and the lower inclined surface 51b, and in order to effectively reduce interference of ambient light, a black light absorbing layer 52 is disposed on the upper right angle surface 51a, and a white reflecting layer 53 is further disposed on the lower inclined surface 51b, and after the white reflecting layer 53 receives the projected light, light is uniformly distributed through scattering, so that brightness and contrast of a picture can be ensured to be uniformly displayed.
In one embodiment, the first included angle α1 is 15-18 degrees, and the second included angle α2 is 72-75 degrees, specifically, the first included angle α1 may be adjusted within a range of 15-18 degrees, may be gradually increased, for example, 15 degrees and 16 degrees may be gradually adjusted to 18 degrees, and may be gradually decreased, for example, 18 degrees and 17 degrees may be gradually adjusted to 15 degrees. The second included angle alpha 2 can be adjusted within the range of 72-75 degrees, and can be gradually increased, for example, the angle is gradually adjusted to 75 degrees, and can be gradually reduced, for example, the angle is gradually adjusted to 72 degrees, and when the angle is gradually increased, for example, the angle is gradually adjusted to 18 degrees, for example, the angle is gradually adjusted to 15 degrees, and the angle is gradually reduced, for example, the angle is gradually adjusted to 15 degrees, for example, the angle is gradually adjusted to 18 degrees, and the angle is gradually adjusted to 17 degrees, so that the product can be applied to a short-focus projector with the projection ratio of 0.45-0.55. When the first included angle α1 is 18 degrees, the corresponding second included angle α2 is 72 degrees, and the angle is selected to be customized according to the optical refraction principle by the lens of the projection machine with the projection ratio of 0.5.
In one embodiment, the base material layer 2 is an optical grade BOPET film having a thickness of 100 μm. The thickness of 100 mu m is one of the application methods of the product, the state is that the four-side springs are stretched and tightened, the thickness is too thin to bear the tensile force of the four-side tightening, the thickness is too thick, the cost is high, the curling state is influenced, and the transparency and the haze of the substrate are high, so that the common BOPET can not meet the requirements, and the optical BOPET film is selected.
In one embodiment, the first adhesion promoting primer layer 1 and the second adhesion promoting primer layer 3 are each made from an aqueous environmental protective primer. The reason why the first adhesion promoting primer 1 and the second adhesion promoting primer 3 are selected to use the aqueous environmental-friendly primer is that environmental protection and health safety are pursued. The water-based primer does not contain organic solvent and volatile organic compound, reduces the pollution to the environment and meets the environmental protection standard. In addition, the use process of the novel water purifier does not generate harmful gas, and is beneficial to maintaining the health and safety of production personnel and end users. The water-based primer is easy to process, short in drying time and good in adhesive force under proper conditions, and meanwhile, the requirements on the adhesiveness, the transparency and the stability of the optical BOPET film are met. This option not only meets environmental regulations, but also helps to improve production efficiency and product performance.
In one embodiment, the grating structure layer 5 is made of an optical grade high-transmittance resin, and the grating structure layer 5 is adhered to the side of the second adhesion promoting primer layer 3 away from the substrate layer 2. The optical high-transmittance resin generally has excellent optical transparency and very high transmittance for incident light, which ensures high transmittance for projection light of the grating structure layer 5, minimizes light loss, and improves brightness of a projection screen. And the grating structure layer 5 is prepared by using an optical-grade high-transmittance resin, so as to help maintain the refractive index matching between materials of each layer. The refractive index matching can reduce the reflection and refraction of light, help to maintain the propagation direction of light, and improve the optical performance of the projection system.
In one embodiment, the black light absorbing layer 52 is formed by using a black matte coating with high hiding rate, and the white reflecting layer 53 is formed by using a matte white coating with high hiding rate, where the black light absorbing layer 52 can reduce the influence of ambient light on the projection effect, so that the ambient light is basically filtered out, and thus the influence of ambient light such as sunlight and lamplight on projection imaging can be greatly reduced, and further, the contrast of the projection picture is improved, and the display effect is improved. Wherein the projection light is irradiated onto the white reflective layer 53, the white reflective layer 53 is capable of scattering the incident light such that the light emitted from the projector is more widely distributed after scattering. This helps to increase the brightness of the projected picture, thereby enhancing the contrast of the image, making the difference between brightness and darkness of the projected picture more pronounced. And the presence of the white reflective layer 53 ensures uniform illumination of the projected picture. By placing the diffusion layer on the lower slope of the optical prism unit 51, it can uniformly disperse the diffused light, prevent occurrence of hot spots or bright areas, and provide a more uniform projection picture.
In one embodiment, the antiglare halo layer 4 is made with a high hiding black matte coating and has a thickness of 100 μm. The anti-dazzle halation layer 4 is arranged on the back of the base layer, so that the ambient light behind the whole product is enabled to be anti-dazzle halation layer 4, interference of the ambient light on projection imaging can be further reduced, and the display effect of a projection picture is further improved. The anti-dazzle and halation layer 4 is made of black matte paint with high coverage rate, so that light rays with various wavelengths can be absorbed; the preparation method is a coating process, the thickness is about 100 mu m, the effect is black and light-tight, and no astigmatism is generated when light irradiates.
A method of preparing a short focal line light resistant film comprising the steps of:
S1, preparing a base layer, which specifically comprises the following steps:
S11, selecting a substrate layer:
An optical BOPET film with the thickness of 100 mu m is selected as a base material layer 2 to be placed in a dry and dust-free environment;
s12, preparing a first adhesion promotion base coat:
Stirring the aqueous environment-friendly primer to ensure uniformity;
uniformly coating the water-based environment-friendly paint on the substrate layer 2 by using a micro-gravure roll coater;
drying at a temperature of 25 ℃ to 35 ℃ to ensure complete curing of the primer layer to form a first adhesion promoting primer layer 1 on the surface of the substrate layer 2;
S13, preparing a second adhesion promotion base coat 3:
Repeating the step S12, applying an aqueous environmental-friendly paint on the other side of the substrate layer 2, ensuring that the primer layer is completely cured so as to form a second adhesion promoting primer layer 3 on the other surface of the substrate layer 2;
S2, preparing an anti-dazzle corona layer, which comprises the following specific steps:
preparing black matte paint with high coverage rate, and dispersing and stirring at high speed to fully and uniformly mix the black matte paint;
Uniformly coating a high-coverage black matte coating on one side of the first adhesion promoting primer layer 1 far from the substrate layer 2;
Curing to form an antiglare halo layer 4;
S3, preparing a grating structure layer, which comprises the following specific steps:
S31, preparing an optical prism unit:
Curing the optical-grade high-transmittance resin in a prepared linear grating structure mold to ensure that the angle of the grating is free from errors after curing, and forming a plurality of optical prism units 51 side by side at one time;
s32, preparing a black light absorption layer:
preparing black matte paint, namely adding nanoscale titanium dioxide, silicon dioxide and carbon black color paste into acrylic emulsion or polyurethane emulsion to ensure that the materials are fully and uniformly mixed;
uniformly coating black matte paint on the upper right-angle surface of the optical prism unit 51 by using a coating mode, and then curing and rolling to form a black light absorption layer 52;
S33, preparing a white reflecting layer:
Preparing a matte white paint, and adding nanoscale titanium dioxide and color paste into the matte white paint to ensure full and uniform mixing;
Uniformly coating matte white paint on the lower inclined surface 51b of the optical prism unit 51 by using a coating mode, and then curing and rolling to form a white reflecting layer 53 to obtain a grating structure layer 5;
S4, forming a short-focus linear light-resistant film:
and (3) carrying out composite imprinting on the grating structure layer 5 and the second adhesion promoting primer layer 3 to obtain the short-focus linear light-resistant film.
The working principle of the short-focus linear light-resistant film is based on the excellent performance of the composite structure. First, the base layer contains an optical grade BOPET film, and the curled state of the product is maintained by adjusting the thickness and elasticity thereof. The first adhesion promoting primer 1 and the second adhesion promoting primer 3 on the base layer are aqueous environmental-friendly primer, ensure adhesion, transparency, and are environmentally and user-friendly.
The anti-glare halo layer 4 is arranged on the back of the base layer, absorbs light rays with various wavelengths through the black matte coating with high hiding rate, reduces the influence of back ambient light, and improves the definition of a projection picture. The grating structure layer 5 is composed of a plurality of optical prism units 51 with triangular cross sections in the horizontal direction, wherein a black light absorption layer 52 is arranged on an upper right angle surface 51a, and a white reflecting layer 53 is arranged on a lower inclined surface 51 b. The arrangement of the optical prism units and the adjustment of the included angles ensure the correct propagation of the projection light on the product according to the optical refraction principle, so that the light transmission loss is minimum, and the brightness and the definition of the projection picture are improved.
The black light absorbing layer 52 effectively reduces interference of ambient light, and the white reflecting layer 53 uniformly distributes light by scattering after receiving projection light, thereby increasing brightness and contrast of the picture and ensuring uniform display of the picture. The whole structure makes this light-resistant film be applicable to short burnt projector, has effectively reduced the influence of ambient light to the projection effect, has provided clear, bright, high contrast's projection picture.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The application and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the application as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present application.

Claims (9)

1. A short focal line light resistant film comprising: the base layer comprises a base material layer (2), and a first adhesion promotion base coat (1) and a second adhesion promotion base coat (3) are respectively arranged on two sides of the base material layer (2); an antiglare halo layer (4), the antiglare halo layer (4) being disposed on a side of the first adhesion promoting primer layer (1) remote from the substrate layer (2); the optical prism unit (51) is formed by arranging a plurality of optical prism units (51) with triangular cross sections in the horizontal direction, each optical prism unit (51) comprises an upper right-angle surface (51 a), a lower inclined surface (51 b) and a bottom surface (51 c), the bottom surface (51 c) is arranged on the second adhesion promoting base coat (3), a first included angle is formed between the lower inclined surface (51 b) and the bottom surface (51 c), a second included angle is formed between the upper right-angle surface and the lower inclined surface (51 b), a black light absorption layer (52) is arranged on the upper right-angle surface (51 a), and a white reflecting layer (53) is arranged on the lower inclined surface (51 b).
2. The short-focus linear light-resistant film according to claim 1, wherein the first included angle is 15-18 degrees and the second included angle is 72-75 degrees.
3. The short-focus linear light-resistant film according to claim 1, wherein the base material layer (2) is an optical grade BOPET film having a thickness of 100 μm.
4. A short-focus linear light-resistant film according to claim 1, characterized in that the first adhesion promoting primer layer (1) and the second adhesion promoting primer layer (3) are made of an aqueous environmental-friendly primer.
5. A short-focus linear light-resistant film according to claim 1, characterized in that the grating structure layer (5) is made of an optical grade high-transmittance resin, the grating structure layer (5) being adhered to the side of the second adhesion promoting primer layer (3) remote from the substrate layer (2).
6. The short-focus linear light-resistant film according to claim 1, wherein the black light-absorbing layer (52) is formed with a high hiding rate black matte paint.
7. A short-focus linear light-resistant film according to claim 1, characterized in that the antiglare corona layer (4) is made of a high hiding black matte paint and has a thickness of 100 μm.
8. A short-focus linear light-resistant film according to claim 1, characterized in that the white reflective layer (53) is formed with a high hiding rate matte white paint.
9. A method for preparing the short focal line light resistant film according to one of claims 1 to 8, comprising the steps of:
S1, preparing a base layer, which specifically comprises the following steps:
S11, selecting a substrate layer:
An optical BOPET film with the thickness of 100 mu m is selected as a base material layer (2) to be placed in a dry dust-free environment;
s12, preparing a first adhesion promotion base coat:
Stirring the aqueous environment-friendly primer to ensure uniformity;
uniformly coating water-based environment-friendly paint on the substrate layer (2) by using a micro-gravure roll coater;
Drying at a temperature of 25 ℃ to 35 ℃ to ensure that the primer layer is fully cured so as to form a first adhesion promoting primer layer (1) on the surface of the substrate layer (2);
s13, preparing a second adhesion promotion base coat (3):
repeating the step S12, and coating an aqueous environment-friendly primer on the other side of the substrate layer (2) to ensure that the primer is completely cured so as to form a second adhesion promoting primer layer (3) on the other surface of the substrate layer (2);
S2, preparing an anti-dazzle corona layer, which comprises the following specific steps:
preparing black matte paint with high coverage rate, and dispersing and stirring at high speed to fully and uniformly mix the black matte paint;
Uniformly coating black matte paint with high hiding rate on one side of the first adhesion promoting base coat (1) far from the substrate layer (2);
Curing to form an anti-glare halo layer (4);
S3, preparing a grating structure layer, which comprises the following specific steps:
S31, preparing an optical prism unit:
Curing the optical-grade high-transmittance resin in a prepared linear grating structure mold to form a plurality of side-by-side optical prism units (51) at one time;
s32, preparing a black light absorption layer:
preparing black matte paint, namely adding nanoscale titanium dioxide, silicon dioxide and carbon black color paste into acrylic emulsion or polyurethane emulsion to ensure that the materials are fully and uniformly mixed;
Uniformly coating black matte paint on the upper right-angle surface of the optical prism unit (51), and then curing and rolling to form a black light absorption layer (52);
S33, preparing a white reflecting layer:
Preparing a matte white coating, and adding nanoscale titanium dioxide and silicon dioxide into acrylic acid or polyurethane emulsion to ensure full and uniform mixing;
Uniformly coating matte white paint on a lower inclined surface (51 b) of the optical prism unit (51) and then curing to form a white reflecting layer (53) to obtain a grating structure layer (5);
S4, forming a short-focus linear light-resistant film:
And (3) carrying out composite imprinting on the grating structure layer (5) and the second adhesion promoting primer layer (3) to obtain the short-focus linear light-resistant film.
CN202410389468.8A 2024-04-02 2024-04-02 Short-focus linear light-resistant film and preparation method thereof Pending CN117970537A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014052555A (en) * 2012-09-07 2014-03-20 Dainippon Printing Co Ltd Reflective screen and stereoscopic video image display system
TWM577512U (en) * 2018-10-25 2019-05-01 弘勝光電股份有限公司 Short-focus front projection ambient light resist screen
CN211454220U (en) * 2020-03-05 2020-09-08 国创视讯(广州)科技股份有限公司 Short focus forward projection type soft curtain
CN212873179U (en) * 2020-08-06 2021-04-02 广西佳视微电子科技有限公司 Ultra-short-focus orthographic projection light-resistant projection screen
CN113311658A (en) * 2021-05-21 2021-08-27 江阴通利光电科技有限公司 Anti-scratch optical film for projection screen and high-contrast screen
CN117518699A (en) * 2023-12-07 2024-02-06 中科宝溢视觉科技(江苏)有限公司 Linear anti-light rear projection optical imaging film

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014052555A (en) * 2012-09-07 2014-03-20 Dainippon Printing Co Ltd Reflective screen and stereoscopic video image display system
TWM577512U (en) * 2018-10-25 2019-05-01 弘勝光電股份有限公司 Short-focus front projection ambient light resist screen
CN211454220U (en) * 2020-03-05 2020-09-08 国创视讯(广州)科技股份有限公司 Short focus forward projection type soft curtain
CN212873179U (en) * 2020-08-06 2021-04-02 广西佳视微电子科技有限公司 Ultra-short-focus orthographic projection light-resistant projection screen
CN113311658A (en) * 2021-05-21 2021-08-27 江阴通利光电科技有限公司 Anti-scratch optical film for projection screen and high-contrast screen
CN117518699A (en) * 2023-12-07 2024-02-06 中科宝溢视觉科技(江苏)有限公司 Linear anti-light rear projection optical imaging film

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