CN112946988A - High-gain laser anti-light screen based on Fresnel lens - Google Patents
High-gain laser anti-light screen based on Fresnel lens Download PDFInfo
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- CN112946988A CN112946988A CN201911263588.9A CN201911263588A CN112946988A CN 112946988 A CN112946988 A CN 112946988A CN 201911263588 A CN201911263588 A CN 201911263588A CN 112946988 A CN112946988 A CN 112946988A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS 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
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/602—Lenticular screens
Abstract
The invention discloses a Fresnel lens-based high-gain laser light-resistant screen, which sequentially comprises an AG film layer, a contrast film layer, a Fresnel lens layer, a cylindrical lens layer, a reflecting layer, a protective film layer, an adhesive layer and a honeycomb aluminum plate layer; the cylindrical lens layer is transferred on the working surface of the Fresnel lens layer by a water coating transfer printing method, the cylindrical lens layer is a plurality of parallel lines with the pitch of 0.1-0.16 mm and the thickness of 0.06-0.1 mm, the cross section of each line is in a semicircular triangle shape, and the diameter of each line is about 0.06-0.1 mm. Compared with the laser light-resistant screen in the existing market, the screen has better display effect, high gain, wide viewing angle and high contrast. The display effect of the screen matched with a commercially available 2000-element laser machine is equivalent to the effect of other screens matched with laser machines above 20000 elements, and the cost can be saved by 70% for users. Meanwhile, huge development space is brought to the laser screen market.
Description
Technical Field
The invention belongs to the technical field of optical display, and particularly relates to a high-gain laser anti-light screen based on a Fresnel lens.
Background
The gain of the existing laser anti-light screen conflicts with the visual angle, the visual angle is required to be lost if the gain is high, the gain is required to be lost if the visual angle is large, the existing laser anti-light screen can only take a middle value, the gain is 1.0, and the left and right visual angles are about 15 degrees, so that the existing laser anti-light screen is required to be provided with a short-focus laser machine with the brightness of about 3000 lumens, the price of the existing 3000 lumen laser machine is about 35000 yuan, the higher the brightness of the laser machine is, the higher the price is, and the better the display effect is achieved if the left and right visual angles of the screen are 35 degrees, the 3.0 and 1000 lumens are provided, compared with the 3000 lumen laser. A cylindrical mirror must be made on the fresnel lens structure to achieve a gain of 3.0 without loss of left and right viewing angles.
Disclosure of Invention
The invention aims to provide a high-gain laser light-resistant screen based on a Fresnel lens.
The invention relates to a Fresnel lens-based high-gain laser light-resistant screen which sequentially comprises an AG film layer, a contrast film layer, a Fresnel lens layer, a cylindrical lens layer, a reflecting layer, a protective film layer, an adhesive layer and a honeycomb aluminum plate layer; the cylindrical lens layer is transferred and printed on the working surface of the Fresnel lens layer by a water coating transfer printing method, the cylindrical lens layer is a plurality of parallel lines with the pitch of 0.1-0.16 mm and the thickness of 0.06-0.1 mm, the cross section of each line is approximately semicircular, and the diameter of each line is about 0.06-0.1 mm.
In the present invention, the AG film mainly functions as follows: (1) the high surface haze can reduce the reflection of projection light; (2) as a protective layer, its high surface hardness is scratch resistant; (3) the incidence rate of light is improved. The contrast film layer mainly has the following functions: (1) the light resistance of the screen is improved; (2) the real color of the screen display image is provided, and the contrast of the image color is bright. The Fresnel lens layer mainly has the following functions: (1) interference light from the left, right and upper directions enters the screen and is absorbed, so that the light-resistant effect can be achieved; (2) incident light of the laser machine passes through the Fresnel lens layer, and reflected imaging light is parallel light; (3) projection light in the left direction, the right direction and the upper direction of the screen is received to the central audience position through the Fresnel lens structure, so that the screen is brighter to watch in the middle position. The cylindrical mirror layer with the reflecting layer mainly has the following functions: when projection light loops through AG rete, contrast rete, fresnel lens layer, cylindrical mirror layer, then meets the reflection stratum, with projection light directional reflection, visual angle about reflection light opens through cylindrical mirror layer again, sees through fresnel lens layer and becomes the parallel light, loops through contrast rete, AG rete formation of image.
Preferably, the AG film layer comprises UV hardening liquid, a sand surface agent and a dispersing agent, wherein the dosage of the sand surface agent and the dispersing agent is respectively 5-8% and 0.5-1% of the weight of the UV hardening liquid;
the sand surface agent is silicon dioxide sand surface agent with the particle size of 4-8 mu m, and the dispersing agent is methyl amyl alcohol dispersing agent; .
Preferably, the AG film layer also comprises black nano color paste, and the using amount of the black nano color paste is 6-9% of the weight of the UV hardening liquid.
Preferably, the contrast film layer comprises organic silicon pressure-sensitive adhesive with solid content of 45-65%, nano blue-phase transparent black paste, chloroplatinic acid, a dispersing agent, a leveling agent and a defoaming agent; wherein the dosage of the nano blue phase transparent black paste, the chloroplatinic acid, the dispersant, the flatting agent and the defoaming agent is 0.3-0.5%, 0.1-0.2%, 0.2-0.4%, 0.01-0.15% and 0.2-0.3% of the organic silicon pressure sensitive adhesive respectively. (ii) a
The dispersing agent is an acrylamide dispersing agent, the flatting agent is a polyether organic silicon flatting agent, and the defoaming agent is an organic silicon defoaming agent.
Preferably, the Fresnel lens layer comprises UV light-cured glue, a dispersing agent and a defoaming agent, wherein the dispersing agent and the defoaming agent account for 0.05-0.2% and 0.35-0.5% of the UV light-cured glue by mass;
the UV light curing adhesive is polyester acrylate curing adhesive, the dispersing agent is methyl amyl alcohol dispersing agent, and the defoaming agent is organic silicon defoaming agent.
Preferably, the reflective layer is an aluminum-plated reflective layer.
Preferably, the protective film layer is a silica protective film layer.
Preferably, the adhesive layer comprises acrylic pressure-sensitive adhesive with solid content of 45-60% and isocyanate, and the mass of the isocyanate is 0.2-0.4% of that of the acrylic pressure-sensitive adhesive.
Compared with the prior art, the invention has the following advantages and beneficial effects:
compare with the anti-light screen of laser on the existing market, this embodiment screen display effect is better, has high gain, wide visual angle, high contrast. The display effect of the screen matched with a commercially available 2000-element laser machine is equivalent to the effect of other screens matched with laser machines above 20000 elements, and the cost can be saved by 70% for users. Meanwhile, huge development space is brought to the laser screen market.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the following examples of the present invention will be provided. It will be apparent to those of ordinary skill in the art that other embodiments may be made in accordance with these examples without the exercise of inventive faculty. It should be understood that the embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
Examples
This example will provide a method of preparation.
(1) AG film layer
In this example, the formulation of the AG film layer is: comprises UV hardening liquid, a sand surface agent and a dispersing agent; wherein, the dosage of the sand surface agent and the dispersant is 5 to 8 percent and 0.5 to 1 percent of the weight of the UV hardening liquid respectively. The sand finishing agent is silicon dioxide sand finishing agent with the particle size of 4-8 mu m. The dispersant is methyl amyl alcohol dispersant. The preferable formula is as follows: comprises UV hardening liquid, a sand surface agent, a dispersing agent and black nanometer color paste; wherein the dosage of the sand surface agent, the dispersant and the black nano color paste is respectively 5 to 8 percent, 0.5 to 1 percent and 6 to 9 percent of the weight of the UV hardening liquid. The addition of the black nanometer color paste enables the surface color of the AG film layer to be transparent black, the black light absorption can improve the anti-interference light function of the screen, and even under the condition of stronger ambient light ratio, the screen display image is still clear, so the optimal AG film layer has better anti-interference light performance.
The preparation method of the AG film layer comprises the following steps:
adding a sand surface agent, a dispersing agent and black nano color paste into UV hardening liquid, adding ethyl acetate or industrial toluene to dilute until the solid content is 24-26%, stirring and vacuumizing; pressurizing the mixture obtained by stirring by using an air compressor for 0.3-0.4 mpa, putting the mixture into a coating material trough, coating wet glue on the surface of the PET optical pre-coating film by adopting a micro-concave coating device, and sequentially drying and curing by ultraviolet light to obtain the AG film layer. The drying adopts a temperature subsection oven, and the subsection temperature is 40 ℃, 60 ℃, 80 ℃, 100 ℃ and 120 ℃ in sequence.
(2) Contrast film layer
In this example, the formulation of the contrast film layer is: the adhesive comprises organic silicon pressure-sensitive adhesive with solid content of 45-65%, nanoscale blue-phase transparent black paste, chloroplatinic acid, a dispersing agent, a flatting agent and a defoaming agent; wherein the dosage of the nano blue phase transparent black paste, the chloroplatinic acid, the dispersant, the flatting agent and the defoaming agent is respectively 0.3 to 0.5 percent, 0.1 to 0.2 percent, 0.2 to 0.4 percent, 0.01 to 0.15 percent and 0.2 to 0.3 percent of the weight of the organic silicon pressure-sensitive adhesive. The organic silicon pressure-sensitive adhesive adopts morning flying CF-8152 organic silicon pressure-sensitive adhesive, the dispersing agent is acrylamide dispersing agent, the leveling agent adopts polyether organic silicon leveling agent, and the defoaming agent adopts organic silicon defoaming agent.
The preparation method of the contrast film layer comprises the following steps:
pouring the organic silicon pressure-sensitive adhesive into a stirring container, and adding the nano transparent black-blue phase color paste, chloroplatinic acid, a dispersing agent, a leveling agent and a defoaming agent; vacuumizing the stirring container, and stirring at the rotating speed of 800-1800 rpm for 15-30 minutes to obtain a contrast film slurry; and (3) pumping the contrast film slurry into coating equipment, and uniformly coating the slurry on the surface of the optical PET precoating film by using a scraper to form wet glue. The optical PET precoating film coated with the wet glue is baked by a temperature segmentation oven with the length of 32 meters, and the segmentation temperature is 40 degrees, 60 degrees, 80 degrees, 100 degrees and 120 degrees in sequence. And drying to obtain the contrast film with the thickness of 100 um.
The contrast film was laminated to the AG film using a laminating apparatus to obtain a first combined film.
(3) Fresnel lens layer
In this embodiment, the formula of the fresnel lens layer is as follows: the UV curing adhesive comprises a functional group high-transparency yellowing-resistant UV curing adhesive, a dispersing agent and a defoaming agent, wherein the dispersing agent and the defoaming agent account for 0.05-0.2% and 0.35-0.5% of the UV curing adhesive in mass. In the embodiment, the UV light curing adhesive is polyester acrylate curing adhesive, and is specifically OPT-9410 type adhesive; the dispersant is methyl amyl alcohol dispersant, and the defoaming agent is organic silicon defoaming agent.
The preparation process of the Fresnel lens layer comprises the following steps:
pouring the UV light-cured glue into a stirrer, adding a dispersing agent and a defoaming agent, simultaneously evacuating through a high-speed dispersing agent stirrer for 30 minutes, and then pressurizing to drive the slurry into a light-cured coating line trough. And coating UV (ultraviolet) light curing glue with the thickness of about 80un by a comma scraper on the color film surface of the AG film and the contrast film layer after the AG film and the contrast film layer are attached, conveying the UV light curing glue into a mold roller at the speed of 10 meters per minute, and irradiating and forming by ultraviolet rays with the wavelength of 365-385 while impressing to obtain the total reflection parallel light Fresnel lens layer.
(4) Cylindrical mirror layer
In this embodiment, a water-coating transfer printing technique is used to fabricate a cylindrical lens layer on a fresnel lens layer, and two specific processes are provided below.
The first production process of the cylindrical mirror layer comprises the following steps:
lines with the pitch of 0.1-0.16 mm are printed on the surface of a polyvinyl alcohol film (PVA film) by using high-transparency water transfer printing ink, and the printing depth is 0.06-0.1 mm. The cross section of each line is in a semicircular triangle shape, the diameter of each line is 0.06-0.1 mm, the printed cylindrical mirror is placed on the water surface, the joint part of the cylindrical mirror and the water surface is free from air, an alkaline cosolvent is uniformly sprayed on the cylindrical mirror to restore the ink of the printed lines, the polyvinyl alcohol film is easily dissolved in water, the working surface of the prepared Fresnel lens layer faces downwards, the lines are transferred to the surface of the Fresnel lens layer by using water pressure, then the drying channel is used for drying, a metal aluminum reflecting layer is plated on the working surface of the Fresnel lens layer in a vacuum mode, and a PET film with pressure-sensitive adhesive is pasted on the reflecting layer.
The second production process of the cylindrical mirror layer comprises the following steps:
the high-transparency heat transfer printing ink is used for printing lines with the pitch of 0.1-0.16 mm and the depth of 0.06-0.1 mm on the surface of the transfer film, the cross section of each line is approximately semicircular, and a cylindrical mirror with the line diameter of 0.06-0.1 mm is dried through a drying tunnel with the temperature of 50 ℃. Then synchronously feeding the transfer film and the prepared Fresnel lens into a double-roller film laminating machine, controlling the temperature of a roller to be 85-90 ℃, transferring the cylindrical mirror on the transfer film on the working surface of the Fresnel lens through heating, then vacuum-plating an aluminum reflecting layer on the working surface of the Fresnel lens, and pasting a PET film with pressure-sensitive adhesive on the aluminum reflecting layer.
(5) Reflective layer
In this embodiment, a vacuum continuous plating apparatus is used to plate a layer of aluminum with a reflectivity of 92% on the working surface of the fresnel lens.
According to the invention, the Fresnel lens layer and the cylindrical lens layer are combined, and the cylindrical lens layer is used for opening the visual angle, so that the screen has pure display color and higher contrast, the gain can be 4.0, the definition of a displayed image is multiplied, and the visual angle is wide. The display effect of the 2000-element laser machine for the screen is equivalent to that of the 20000-element laser machine for other screens.
Because the working face of fresnel lens structure aluminizes the reflection stratum, and the interference plane does not plate, left side direction, right side direction, last side direction so, the light of these 3 directions all can get into fresnel lens's interference plane, and light just is absorbed in case get into fresnel lens interference plane, just can not play the display effect who influences the screen, consequently has lightfast effect.
(6) Protective film layer
Before the protective film layer is manufactured, the PET film is torn off, and the silicon dioxide protective film layer is plated on the reflecting layer in vacuum.
(7) Adhesive layer
The formula of the adhesive layer in this example is: comprises acrylic pressure-sensitive adhesive with solid content of 45-60% and isocyanate, wherein the mass of the isocyanate is 0.2-0.4% of that of the acrylic pressure-sensitive adhesive. Mixing acrylic pressure-sensitive adhesive and isocyanate to prepare slurry, feeding the slurry into comma coating equipment, and uniformly coating the slurry on the surface of an optical PET precoating film with the thickness of 50um by using a comma scraper to form wet glue with the thickness of 150 um. And baking the optical PET precoating film coated with the wet glue by a temperature segmentation oven with the length of 32 meters, wherein the segmentation temperature is 40 ℃, 60 ℃, 80 ℃, 100 ℃ and 120 ℃ in sequence, and drying to obtain the adhesive layer. In this example, the acrylic pressure sensitive adhesive was selected from those having a solid content of 50% and a peel force of 1000 g.
And synchronously feeding the adhesive layer and the PET release film into a laminating device, and laminating the adhesive layer and the PET release film with the thickness of 25 mu n. After the lamination, according to the above operation, the other surface of the optical PET pre-coating film is coated with the adhesive layer, so as to obtain a film layer structure which is composed of the first PET release film, the first adhesive layer, the optical PET pre-coating film, the second adhesive layer and the second PET release film in sequence. The adhesive layers are manufactured on two sides of the optical PET pre-coating film, so that the protective film layer is convenient to attach to the honeycomb aluminum plate layer.
(8) Honeycomb aluminium plate layer
And (3) attaching the honeycomb aluminum plate and the adhesive layer to obtain the screen structure.
The performance detection is respectively carried out on the screen of the embodiment and the laser light-resistant screen on the existing market, and the performance parameters are as follows:
with illuminometer, standard blank, 180 degrees semicircle tracks, the test result is: the gain of the existing laser light-resistant screen in the market is 1.1, the left and right visual angles are 15 degrees, and the visual angle is 120 degrees; the screen of this embodiment has a gain of 3.7, a left and right viewing angle of 35 degrees, a visible viewing angle of 170 degrees, and a contrast ratio of 20000: 1.
Compare with the anti-light screen of laser on the existing market, this embodiment screen display effect is better, has high gain, wide visual angle, high contrast. The display effect of the screen matched with a commercially available 2000-element laser machine is equivalent to the effect of other screens matched with laser machines above 20000 elements, and the cost can be saved by 70% for users. Meanwhile, huge development space is brought to the laser screen market.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A high-gain laser light-resistant screen based on Fresnel lens is characterized in that:
the solar cell comprises an AG film layer, a contrast film layer, a Fresnel lens layer, a cylindrical lens layer, a reflecting layer, a protective film layer, an adhesive layer and a honeycomb aluminum plate layer in sequence; the cylindrical lens layer is transferred and printed on the working surface of the Fresnel lens layer by a water coating transfer printing method, the cylindrical lens layer is a plurality of parallel lines with the pitch of 0.1-0.16 mm and the thickness of 0.06-0.1 mm, the cross section of each line is approximately semicircular, and the diameter of each line is about 0.06-0.1 mm.
2. The fresnel lens-based high-gain laser light-resistive screen of claim 1, wherein:
the AG film layer comprises UV hardening liquid, a sand surface agent and a dispersing agent, wherein the dosage of the sand surface agent and the dispersing agent is respectively 5-8% and 0.5-1% of the weight of the UV hardening liquid;
the sand surface agent is silicon dioxide sand surface agent with the particle size of 4-8 mu m, and the dispersing agent is methyl amyl alcohol dispersing agent.
3. The fresnel lens-based high-gain laser light-resistive screen of claim 2, wherein:
the AG film layer also comprises black nano color paste, and the using amount of the black nano color paste is 6-9% of the weight of the UV hardening liquid.
4. The fresnel lens-based high-gain laser light-resistive screen of claim 1, wherein:
the contrast film layer comprises organic silicon pressure-sensitive adhesive with solid content of 45-65%, nanoscale blue-phase transparent black paste, chloroplatinic acid, a dispersing agent, a leveling agent and a defoaming agent; wherein the dosage of the nano blue phase transparent black paste, the chloroplatinic acid, the dispersant, the flatting agent and the defoaming agent is 0.3-0.5%, 0.1-0.2%, 0.2-0.4%, 0.01-0.15% and 0.2-0.3% of the organic silicon pressure sensitive adhesive respectively. (ii) a
The dispersing agent is an acrylamide dispersing agent, the flatting agent is a polyether organic silicon flatting agent, and the defoaming agent is an organic silicon defoaming agent.
5. The fresnel lens-based high-gain laser light-resistive screen of claim 1, wherein:
the Fresnel lens layer comprises UV (ultraviolet) light-cured glue, a dispersing agent and a defoaming agent, wherein the dispersing agent and the defoaming agent account for 0.05-0.2% and 0.35-0.5% of the UV light-cured glue in mass;
the UV light curing adhesive is polyester acrylate curing adhesive, the dispersing agent is methyl amyl alcohol dispersing agent, and the defoaming agent is organic silicon defoaming agent.
6. The fresnel lens-based high-gain laser light-resistive screen of claim 1, wherein:
the reflecting layer is an aluminized reflecting layer.
7. The fresnel lens-based high-gain laser light-resistive screen of claim 1, wherein:
the protective film layer is a silicon dioxide protective film layer.
8. The fresnel lens-based high-gain laser light-resistive screen of claim 1, wherein:
the adhesive layer comprises acrylic pressure-sensitive adhesive with solid content of 45-60% and isocyanate, wherein the mass of the isocyanate is 0.2-0.4% of that of the acrylic pressure-sensitive adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911263588.9A CN112946988A (en) | 2019-12-11 | 2019-12-11 | High-gain laser anti-light screen based on Fresnel lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911263588.9A CN112946988A (en) | 2019-12-11 | 2019-12-11 | High-gain laser anti-light screen based on Fresnel lens |
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| Publication Number | Publication Date |
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| CN112946988A true CN112946988A (en) | 2021-06-11 |
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| CN201911263588.9A Pending CN112946988A (en) | 2019-12-11 | 2019-12-11 | High-gain laser anti-light screen based on Fresnel lens |
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- 2019-12-11 CN CN201911263588.9A patent/CN112946988A/en active Pending
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