CN212905890U - Fresnel light-resistant projection screen - Google Patents
Fresnel light-resistant projection screen Download PDFInfo
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- CN212905890U CN212905890U CN202021620979.XU CN202021620979U CN212905890U CN 212905890 U CN212905890 U CN 212905890U CN 202021620979 U CN202021620979 U CN 202021620979U CN 212905890 U CN212905890 U CN 212905890U
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Abstract
The utility model discloses a Fresnel light-resistant projection curtain, the light-resistant projection curtain comprises a substrate layer, a surface scratch-resistant layer, a coloring layer, a diffusion layer, a Fresnel lens layer and a light-absorbing layer, wherein the surface of the substrate layer is provided with the surface scratch-resistant layer, the coloring layer, the diffusion layer, the Fresnel lens layer and the light-absorbing layer are sequentially arranged backwards on the back surface of the substrate layer, and the section of the Fresnel lens layer is a continuous triangular sawtooth texture structure which is close to 90 degrees; the manufacturing method comprises the steps of forming a flexible curlable substrate layer through co-extrusion and extrusion, and covering a surface scratch-resistant layer through a coating or sand blasting process; and a compact reflecting layer and a light absorption layer are covered on the surface of the Fresnel lens layer through a precision mould die pressing or rolling and curing molding Fresnel texture structure. The utility model discloses can effectively solve the problem that reflection stratum and fei nieer texture layer can not fine collocation, effectively improve the gain of fei nieer screen and the function of resisting ambient light.
Description
Technical Field
The utility model belongs to the technical field of the projection curtain, especially, relate to a fresnel light-resistant projection curtain.
Background
As is known, most of the electronic display devices used in conferences, home theaters or teaching are infrared electronic whiteboards and LCD bright backlight boards, the larger the screen of the display device is, the more the cinema-like immersion feeling can be felt, and such products cannot be made into ultra-large fresh wet surfaces due to the limitation of materials, or cannot be popularized due to very high manufacturing cost, and are too heavy to facilitate transportation and installation. In recent years, with the development of display technology, in large-screen display, a laser television formed by combining an ultra-short-focus projector and a short-focus light-resistant projection screen is generally adopted, the laser television obtains nearly half market share due to the advantages of healthy eye protection, portability, power saving, low cost and the like, the size of the laser television can be 100 inches, the price is relatively cheaper, if the liquid crystal television is 100 inches, the price is at least tens of thousands of people, and common people are not reachable remotely. Therefore, the laser television is widely concerned and accepted by consumers by virtue of the advantages of small volume, large projection area, low cost and the like, and the market is expanded year by year. The short-focus light-resistant screen matched with the laser television is mainly divided into two types, one type is a black grid light-resistant projection screen, and the other type is a Fresnel light-resistant projection screen. The black grid light-resisting curtain has low central gain and large left and right visual angles; and the Fresnel light-resistant projection screen has high central gain and small left and right visual angles. In addition, the Fresnel light-resistant curtain is additionally provided with a soft light layer, a coloring layer, a diffusion layer and a scratch-resistant surface layer. Therefore, the fresnel light-resisting curtain has better effect than the black grid light-resisting curtain in terms of effect, and the price of the fresnel light-resisting curtain is basically doubled compared with that of the black grid light-resisting curtain with the same size. In addition, the texture structure of the Fresnel light-resistant curtain faces inwards, the texture layer is effectively protected, the Fresnel lens optical structure is more complex, the mold processing difficulty is high, the texture structure and the reflection layer structure of the Fresnel screen are difficult to perfectly manufacture, and the reflection structure and the Fresnel texture structure cannot be perfectly matched, so that the gain of the Fresnel screen and the effect of resisting ambient light are influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fresnel resists light projection curtain, according to the utility model discloses can effectively solve the problem that reflection stratum and fresnel texture layer can not fine collocation, effectively improve the gain of fresnel screen and resist the function of ambient light, under bright light shines the environment, have the advantage of high gain, high contrast, high color reduction degree, effectively solve the exposed problem of texture in addition to and improved anti environment light effect. In order to realize the purpose, the utility model discloses a following technological effect:
according to one aspect of the utility model, a fresnel light-resistant projection screen is provided, the light-resistant projection screen comprises a substrate layer, a surface scratch-resistant layer, a coloring layer, a diffusion layer, a fresnel lens layer and a light-absorbing layer, the surface scratch-resistant layer is arranged on the substrate layer, the coloring layer, the diffusion layer, the fresnel lens layer and the light-absorbing layer are arranged on the back surface of the substrate layer in sequence, and the section of the fresnel lens layer is a continuous triangular sawtooth texture structure approaching 90 degrees; each triangular sawtooth texture structure is provided with a horizontal bottom surface which is adhered to the surface of the diffusion layer in parallel, a reflecting inclined surface which is arranged in an inclined state with the surface of the diffusion layer and a vertical cross section which is approximately vertical to the surface of the diffusion layer, and a reflecting layer is adhered to the surface of the reflecting inclined surface.
Preferably, the substrate layer is formed by mutually bonding a flexible and rollable transparent film substrate layer and a gray film substrate layer, the surface scratch-resistant layer is sprayed on the back surface of the transparent film substrate layer, the gray film substrate layer is sprayed on the surface of the transparent film substrate layer, and the coloring layer is continuously bonded on the surface of the gray film substrate layer.
In a further preferred embodiment of the foregoing aspect, the transparent film substrate layer is one of a PET film, a PMMA film, a PS film, a TPU film, a PP film, a COP film, and a PE film.
Preferably, the reflective layer is made of aluminum, copper or silver particles with a particle size of 10nm-100nm, and the thickness of the reflective layer is 200 nm-2000 nm.
In a further preferred embodiment of the present invention, the diffusion layer is a transparent resin material to which diffusion particles are added, and the diffusion particles are composed of metal scattering particles or glass bead powder scattering powder having a particle diameter of 10nm to 200 nm.
The utility model adopts the above technical scheme, the utility model discloses following technological effect has:
(1) the utility model discloses a thermoplastic material film coats one deck reflection stratum coating, then utilizes plane fresnel mould hot pressing to form, in the manufacturing process of fei nieer screen, has effectively improved the system process of original fresnel texture structure and reflection stratum, and the metal coating that will reflect light and use is attached to thermoplastic resin material on the surface, utilizes the fashioned method of heating pressing system, makes fresnel texture structure and reflection stratum structure. Therefore, the problem that the reflection layer and the Fresnel texture layer manufactured by the existing original method cannot be matched well is solved, and the gain of the Fresnel screen and the function of resisting ambient light are effectively improved; therefore, the problem that the reflective layer material is matched with the Fresnel texture structure is effectively solved, and the gain of the Fresnel screen and the function of resisting ambient light are also improved.
(2) The utility model discloses anti light projection curtain has the advantage of high gain, high contrast, high color reduction under bright light shines the environment. Effectively solves the problem of exposed textures, improves the effect of resisting ambient light, and has the advantages of high precision and quick response. The anti-light projection screen is small in size, low in power consumption, free of direct light, capable of protecting eyes of audiences, convenient to transport and install, low in manufacturing cost and capable of being widely popularized and used.
Drawings
Fig. 1 is a schematic structural view of a fresnel light-resistant projection screen according to the present invention;
fig. 2 is a schematic view of the pressing of the fresnel lens layer according to the present invention;
fig. 3 is a schematic diagram of the pressed fresnel lens layer of the present invention;
fig. 4 is a schematic structural diagram of the fresnel lens layer of the present invention when the surface remains;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, according to the utility model discloses a fresnel light-resistant projection curtain, include substrate layer 1, the anti fish tail layer 2 of surface, dyed layer 3, diffuse layer 4, fresnel lens layer 5 and light-absorbing layer 7 including light-resistant projection curtain the surface setting of substrate layer 1 the anti fish tail layer 2 of surface set up backward in proper order dyed layer 3, diffuse layer 4, fresnel lens layer 5 and light-absorbing layer 7 at the back of substrate layer 1, fresnel lens layer 5's section is for being close 90 continuous triangle-shaped sawtooth texture structure. Each triangular sawtooth texture structure is provided with a horizontal bottom surface 20 which is adhered to the surface of the diffusion layer 4 in parallel, a light reflecting inclined surface 21 which is arranged in an inclined state with the surface of the diffusion layer 4, and a vertical cross section 22 which is approximately vertical to the surface of the diffusion layer 4, wherein the surface of the light reflecting inclined surface 21 is adhered with the reflection layer 6. In the utility model, the surface scratch-resistant layer 2 improves the hardness of the screen, avoids the careless scratch, and is easy to clean; the colored layer 3 is generally gray, light black or the like, and can greatly improve the contrast of projection display; the diffusion layer 4 can effectively improve the viewing angle; the Fresnel lens layer 5 is in a strip shape and plays a role in separating ambient light from projection light; the reflecting layer 6 is generally a metal thin film material, such as a reflecting layer (or reflecting layer) made of nano-scale aluminum, copper or silver particles (with the particle size of 10nm-100 nm), the thickness of the reflecting layer 6 is 200 nm-2000 nm, and the reflecting layer 6 can be manufactured by printing, spraying, coating or evaporation and other processes and is used for reflecting incident light of a projector to form a front projection effect; the reflecting layer 6 is used for vertically reflecting the projection light out of the screen to reach the sight of an observer; the light absorption layer 7 (absorption layer) is made of some non-reflective dark color materials, generally black resin materials, and is used for absorbing the ambient light penetrating through the fresnel lens layer, so as to achieve the purpose of light resistance and absorb the ambient light. When the light 11 at the top of the screen is incident on the screen, the irradiation light of the light 11 passes through the horizontal bottom surface 20 and the vertical section 22 of the fresnel lens layer 5 and is absorbed by the light absorption layer 7, and when the light of the projector 10 is incident on the screen, the light is reflected by the metal reflecting object (reflecting layer 6) of the reflecting inclined surface 21 of the fresnel lens layer 5, and the reflection light L is reflected back to the front, so that the function of the light-resistant projection screen for resisting the irradiation of the ambient light is realized.
The utility model discloses in, substrate layer 1 is flexible curly transparent film substrate layer and grey film substrate layer and bonds each other and form transparent film substrate layer's back spraying scratch resistant layer 2 in the surface spraying of transparent film substrate layer grey film substrate layer bonds in succession on the surface of this grey film substrate layer dyed layer 3. The transparent film substrate layer is one of a PET film, a PMMA film, a PS film, a TPU film, a PP film, a COP film and a PE film.
In the present invention, with reference to fig. 1, fig. 2, fig. 3 and fig. 4, the preparation of the fresnel anti-light projection screen of the present invention is performed according to the following steps:
step 1: carrying out high-temperature melting on the gray film base material layer raw material particles and the transparent film base material layer raw material particles of the base material layer 1, co-extruding and extruding to form a flexible and crimpable base material layer 1, and then coating a surface scratch-resistant layer 2 on the surface of the transparent film base material layer formed by co-extrusion through a coating or sand blasting process; the substrate layer 1 is a flexible and rollable plastic film, and therefore, a scratch-resistant layer is manufactured on the outer surface of the plastic film (the surface coating needs to be subjected to hard or frosted treatment to achieve the scratch-resistant function), and specifically, a high-hardness transparent material is coated on the surface by adopting the processes of coating, sand blasting and the like to form the surface scratch-resistant layer 2; then, a coloring layer is manufactured on the inner surface of the base material layer 1 (plastic film) by adopting a coating process, a diffusion layer 4 is manufactured on the coloring layer 3 by adopting the coating process, the coloring layer 3 is made of photocuring colored glue, and the selected color is generally gray or light black;
step 2: respectively stirring the pigment slurry of the coloring layer 3 and the diffusion material of the diffusion layer 4 uniformly, then carrying out one-step extrusion molding on the surface of the base material layer 1 in a two-layer co-extrusion mode, and sequentially coating a coloring layer 3 and a diffusion layer 4 on the surface of a gray film base material layer formed by co-extrusion; the diffusion layer 6 is a transparent resin material added with diffusion particles, the diffusion particles are metal scattering particles or glass bead powder scattering powder with the particle size of 10nm-200nm, the addition amount of the diffusion particles is 0.01-5 wt%, and the diffusion layer diffuses incident light and plays a role of the diffusion particles; the additive amount of the pigment slurry (or the pigment slurry is colored glue, the pigment slurry is added into the glue and stirred uniformly to form the colored glue, the function of the colored glue is to enable the whole screen to be in a gray state) is 0.01-10% by weight, and the balance is transparent resin material;
and step 3: coating a wet film such as polyethylene, polyvinyl chloride and the like on the surface of the diffusion layer 4 by adopting high-transmittance thermoplastic optical resin, flattening and curing the wet film, then molding or rolling and curing the Fresnel lens layer 4 by using a precision mold, and then covering a compact reflecting layer 6 by using the processes of spraying, electroplating, silk-screen printing and roll printing to form a layer; the Fresnel lens layer 5 is a continuous annular triangular sawtooth texture structure, so that each point of incident light of the projector 10 on the sawtooth texture structure is reflected in parallel, and the Fresnel lens layer is made of optical resin with the transmittance of 91%; the coating is first wet film coated and then the die pressing or rolling is carried out.
And 4, step 4: pressing the Fresnel lens layer 4 manufactured in the step 3 by using a plane Fresnel mold 8 so as to form a Fresnel texture structure, and pressing and molding the reflecting layer 6; the reflecting layer material is pressed and molded, and is just completely covered on the inclined plane of the Fresnel texture structure without remaining on the section; in the present invention, as shown in fig. 4, the existing general manufacturing method for manufacturing the reflective coating (reflective layer 6) adopts spraying, electroplating, silk-screen printing, etc. to inevitably leave reflective coating on the inclined plane and the cross section of the fresnel lens layer 4, and the cross-sectional reflective coating can reduce the effect, and the inclined plane is difficult to completely cover the reflective coating, so that a section of the reflective layer 6 is bonded between the reflective inclined plane 21 and the vertical cross section 22, so that the partially irradiated light can reach the light absorbing layer 7 through the horizontal bottom surface 20 and the vertical cross section 22, and the light absorbing layer 7 absorbs the partial light L of the light 11, thereby making the inclined plane difficult to completely cover the reflective coating, and therefore, the reflective effect can be reduced, and the utility model can avoid the problem of residue on the inclined plane and the cross section;
and 5: and stripping the plane Fresnel mold 8 to obtain a Fresnel screen prototype, and coating the light absorption layer 7 on the surface of the texture structure of the Fresnel screen and the corresponding position of the reflecting layer 6.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A Fresnel light-resistant projection screen is characterized in that: the light-resistant projection screen comprises a substrate layer, a surface scratch-resistant layer, a coloring layer, a diffusion layer, a Fresnel lens layer and a light absorption layer, wherein the surface scratch-resistant layer is arranged on the surface of the substrate layer, the coloring layer, the diffusion layer, the Fresnel lens layer and the light absorption layer are sequentially arranged backwards on the back surface of the substrate layer, and the section of the Fresnel lens layer is a continuous triangular sawtooth texture structure approaching 90 degrees; each triangular sawtooth texture structure is provided with a horizontal bottom surface which is adhered to the surface of the diffusion layer in parallel, a reflecting inclined surface which is arranged in an inclined state with the surface of the diffusion layer and a vertical cross section which is approximately vertical to the surface of the diffusion layer, and a reflecting layer is adhered to the surface of the reflecting inclined surface.
2. The fresnel anti-light projection screen of claim 1, wherein: the base material layer is formed by mutually bonding a flexible and rollable transparent film base material layer and a gray film base material layer, the back surface of the transparent film base material layer is sprayed with the surface scratch-resistant layer, the surface of the transparent film base material layer is sprayed with the gray film base material layer, and the coloring layer is continuously bonded on the surface of the gray film base material layer.
3. The fresnel anti-light projection screen of claim 2, wherein: the transparent film substrate layer is one of a PET film, a PMMA film, a PS film, a TPU film, a PP film, a COP film and a PE film.
4. The fresnel anti-light projection screen of claim 1, wherein: the reflecting layer is made of aluminum, copper or silver particles with the particle size of 10nm-100nm, and the thickness of the reflecting layer is 200 nm-2000 nm.
5. The fresnel anti-light projection screen of claim 1, wherein: the diffusion layer is made of transparent resin material added with diffusion particles, and the diffusion particles are composed of metal scattering particles or glass bead powder scattering powder with the particle size of 10nm-200 nm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021620979.XU CN212905890U (en) | 2020-08-06 | 2020-08-06 | Fresnel light-resistant projection screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021620979.XU CN212905890U (en) | 2020-08-06 | 2020-08-06 | Fresnel light-resistant projection screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022247417A1 (en) * | 2021-05-24 | 2022-12-01 | 青岛海信激光显示股份有限公司 | Projection screen capable of resisting ceiling reflection and projection system |
| CN116047854A (en) * | 2023-04-03 | 2023-05-02 | 深圳市真屏科技发展有限公司 | Optical structure projection film and one-time processing forming method thereof |
-
2020
- 2020-08-06 CN CN202021620979.XU patent/CN212905890U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022247417A1 (en) * | 2021-05-24 | 2022-12-01 | 青岛海信激光显示股份有限公司 | Projection screen capable of resisting ceiling reflection and projection system |
| CN116047854A (en) * | 2023-04-03 | 2023-05-02 | 深圳市真屏科技发展有限公司 | Optical structure projection film and one-time processing forming method thereof |
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Effective date of registration: 20231025 Address after: 336000 Factory Building 8, High tech Equipment Manufacturing Industrial Park, Fengcheng City, Yichun City, Jiangxi Province Patentee after: Jiangxi Aimu Technology Co.,Ltd. Address before: 530007 zone B, 4th floor, No.10 factory building, phase II, China ASEAN science and technology business incubation base, No.3 high tech Zone headquarters, XiXiangTang District, Nanning City, Guangxi Zhuang Autonomous Region Patentee before: Guangxi Jiashi Microelectronics Technology Co.,Ltd. |
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