CN109343302B - Ultra-short focus projection curtain - Google Patents
Ultra-short focus projection curtain Download PDFInfo
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- CN109343302B CN109343302B CN201811481036.0A CN201811481036A CN109343302B CN 109343302 B CN109343302 B CN 109343302B CN 201811481036 A CN201811481036 A CN 201811481036A CN 109343302 B CN109343302 B CN 109343302B
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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
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Abstract
The embodiment of the invention discloses an ultra-short-focus projection curtain, which takes the direction from a non-display surface to a display surface of the ultra-short-focus projection curtain as a first direction; the ultra-short-focus projection curtain comprises a reflection assembly and a protection assembly which are stacked along the first direction; the reflecting assembly comprises a reflecting prism and a reflecting layer which are sequentially stacked along the first direction; a plurality of reflecting units are arranged on one side of the reflecting prism close to the reflecting layer, and the cross section of each reflecting unit is triangular; and a hollow structure is arranged between the protection component and the reflection component, and air is filled in the hollow structure. The ultra-short-focus projection curtain provided by the embodiment of the invention can prolong the service life of the projection curtain and improve the user experience.
Description
Technical Field
The embodiment of the invention relates to a projection display technology, in particular to an ultra-short-focus projection curtain.
Background
An ultra-short-focus projection curtain is a tool for displaying images, videos and the like in the occasions of commercial advertisement, teaching, office, home or cinema entertainment and the like. Compared with a liquid crystal screen, the liquid crystal screen has high cost and is not easy to carry and store in occasions with large-size requirements, for example, when the liquid crystal screen is applied to large-size advertising panels, cinema playing and teaching screens, the liquid crystal screen larger than 50 inches is expensive, and cannot be stored in time when not used, in addition, the eyes can easily influence the eyesight due to radiation when watching the liquid crystal screen for a long time, and the liquid crystal screen is not beneficial to the health of a human body; projection screens of the same size do not suffer from the above-mentioned problems, are much less expensive than liquid crystal screens, and are easy to handle and roll up for storage, and are therefore widely used.
The ultra-short focus projection curtain mainly utilizes the cooperation of a reflecting prism and a reflecting surface to reflect projection light, thereby realizing image display. In a conventional ultra-short-focus projection curtain, a plurality of sequentially arranged reflection units are arranged on one side of a reflection prism close to a display surface. The reflecting unit is in a convex shape, and the section of the reflecting unit is triangular; one surface of each reflection unit is coated with a reflection surface to reflect the projection light, thereby realizing image display.
In the projection curtain, the convex reflecting unit faces the display surface, so that the production yield is low, direct touch cannot be performed, the maintenance is troublesome in use, the damage is easy, the cleaning is difficult, and the service life is short. Therefore, such ultra-short-focus projection curtains are not favored by customers.
Disclosure of Invention
The invention provides an ultra-short-focus projection curtain, which is used for prolonging the service life of the projection curtain and improving the user experience.
In a first aspect, an embodiment of the present invention provides an ultra-short-focus projection curtain, where a direction from a non-display surface of the ultra-short-focus projection curtain to a display surface is a first direction; the ultra-short-focus projection curtain comprises a reflection assembly and a protection assembly which are stacked along the first direction; the reflecting assembly comprises a reflecting prism and a reflecting layer which are sequentially stacked along the first direction; a plurality of reflecting units are arranged on one side of the reflecting prism close to the reflecting layer, and the cross section of each reflecting unit is triangular; and a hollow structure is arranged between the protection component and the reflection component, and air is filled in the hollow structure.
Further, the protection component and two adjacent reflection units enclose the hollow structure.
Further, the adhesive layer is also included; the cementing layer is positioned between the reflection assembly and the protection assembly so as to bond the end part of the reflection unit close to the protection assembly and the protection assembly into a whole. Further, the glue layer comprises a plurality of sub-glue layers; the vertical projections of different sub-cementing layers on the protection component are not overlapped; the sub-cementing layers bond the end part of the reflection unit close to the protection component and the protection component into a whole; the first distance is separated between every two adjacent sub-cementing layers, the first distance is larger than 0, and is smaller than the distance between the end parts of the adjacent reflection units close to the protection assembly.
Further, the material of the cementing layer is acrylate adhesive.
Further, the protective component comprises a base material and an atomizing layer which are arranged in a stacked mode; the haze of the atomization layer is 20% -80%; preferably, the matte layer comprises a plurality of microlenses, and the microlenses are arranged on the surface of the matte layer deviating from the substrate, so that the surface of the matte layer deviating from the substrate is uneven.
Further, the vertical projection of the microlens on the substrate is circular or elliptical; the distance between the vertical projections of two adjacent micro lenses on the substrate is greater than or equal to 0 μm and less than or equal to 5 μm; preferably, the height of the microlens along the first direction is greater than or equal to 1 μm and less than or equal to 10 μm; preferably, the particle size of the micro-lenses is greater than or equal to 10 μm and less than or equal to 100 μm.
Further, the haze of the matte layer is greater than or equal to 20% and less than or equal to 80%. Further, the matte layer comprises a material with hardness greater than 3H. Further, the matte layer comprises a resilient material.
Further, the material of the substrate is polyethylene terephthalate resin, thermoplastic polyurethane elastomer rubber or polycarbonate.
The ultra-short-focus projection curtain comprises a reflection assembly and a protection assembly which are arranged in a stacking mode along the first direction; the reflecting assembly comprises a reflecting prism and a reflecting layer which are sequentially stacked along the first direction; a plurality of reflecting units are arranged on one side of the reflecting prism close to the reflecting layer, and the cross section of each reflecting unit is triangular; protection subassembly with hollow structure has between the reflection component, the air is filled in the hollow structure, has solved current ultrashort burnt projection curtain and has been the reflection unit of protruding form towards the display surface, can not carry out direct touch, and the maintenance is more troublesome and damage easily in the use, and is difficult clean, and the short problem of life has realized improving the life of extension projection curtain, improves user experience's effect.
Drawings
Fig. 1 is a schematic structural diagram of an ultra-short-focus projection curtain according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another ultra-short focus projection curtain according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a protection component according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of an ultra-short-focus projection curtain according to an embodiment of the present invention. The direction from the non-display surface of the ultra-short focus projection curtain to the display surface is taken as a first direction (i.e. the direction of the X axis in FIG. 1). Referring to fig. 1, the ultra-short-focus projection curtain includes a reflective member 10 and a protective member 20 stacked in a first direction (i.e., an X-axis direction in fig. 1); the reflection assembly 10 includes a reflection prism 11 and a reflection layer 12 sequentially stacked in a first direction (i.e., an X-axis direction in fig. 1); the side of the reflection prism 11 far away from the reflection layer 12 is a base material layer which can be integrally formed with the reflection prism, a plurality of reflection units 111 are arranged on the side near the reflection layer 12, and the cross section of each reflection unit 111 is triangular; the protection component 20 and the reflection component 10 have a hollow structure 112 therebetween, and the hollow structure 112 is filled with air.
The essence of the above technical solution is that the reflection unit 111 of the reflection assembly 10 is covered by the protection assembly 20, so that the reflection unit 111 is not directly exposed and cannot be directly touched, thereby protecting the reflection unit 111. Therefore the technical scheme that this application provided will protect subassembly 20 complex at the income plain noodles of reflection subassembly 10, reflection unit 111 is inboard at the projection curtain, constitutes the projection curtain that is difficult for scratch/rolls over, and portable transports, and has better anti dirty function of scraping, can carry out conventional clean maintenance of cleaning, is favorable to prolonging the life of this ultra-short burnt projection curtain, is favorable to improving user experience.
With continued reference to fig. 1, during use, light I1 exiting projector 200 passes through protective component 20 and then strikes reflective component 10. The projected light I1 is reflected by the reflection module 10 to form a light I2 for image display, and the light I2 passes through the protection module 20 and is incident on human eyes.
With continued reference to fig. 1, in the ultra-short-focus projection curtain, the reflection assembly 10 further includes a light absorbing layer 13, the light absorbing layer 13 is located on a side of the reflection prism 11 close to the protection assembly 20, and the light absorbing layer 13 and the reflection layer 12 are located on different surfaces of the reflection unit 111. When the ambient light I3 (e.g., lamp light) is irradiated to the light absorbing layer 13, it is absorbed by the light absorbing layer 13 to reduce the interference of the ambient light I3 with the light I2 for image display.
With continued reference to fig. 1, optionally, the ultra-short focus projection curtain further comprises a glue layer 30; the glue layer 30 is positioned between the reflective member 10 and the protective member 20 to bond the end of the reflective unit 111 adjacent to the protective member 20 and the protective member 20 as a single body. The advantage of setting up like this for combine steadily between reflection component 10 and the protection subassembly 20, prevent that it from causing protection subassembly 20 to drop because of the collision, prolong the life of ultrashort burnt projection curtain.
There are various methods for realizing the hollow structure 112 between the protection component 20 and the reflection component 10, and the protection component 20 and two adjacent reflection units 111 exemplarily enclose the hollow structure 112.
Fig. 2 is a schematic structural diagram of another ultra-short-focus projection curtain provided in the embodiment of the present invention. Compared with fig. 1, the difference is that in fig. 2, the method of disposing the glue layer is different. Specifically, referring to fig. 2, the glue layer 30 includes a plurality of sub-glue layers 31; the perpendicular projections of the different sub-glue layers 31 on the protection component 20 do not coincide; each sub-cementing layer 31 integrally bonds the end part of the reflection unit 111 close to the protection component 20 and the protection component 20; the adjacent two sub-glue layers 31 are separated by a first distance d1, and the first distance d1 is greater than 0 and smaller than the distance d2 between the ends of the adjacent reflection units 111 close to the protection component 20.
By virtue of the fact that the glue layer 30 is not provided on the whole surface, the light ray I1 can pass through the glue layer 30 as much as possible, and directly enter the hollow structure 112 after passing through the protective component 20, and then exit from the hollow structure 112 and enter the protective component 20. This arrangement can reduce the probability of secondary refraction of light (including light I1 and light I2) at the glue layer 30, reduce light loss, and is beneficial to improving the optical gain of the ultra-short-focus projection curtain.
Optionally, the adhesive layer 30 may be an adhesive capable of being cured by ultraviolet light, and may also be other types of adhesives, which is not limited in this application.
Considering that the acrylate adhesive has a small influence on the light transmittance, optionally, in the above technical solution, the material of the adhesive layer 30 is the acrylate adhesive, so that the ultra-short-focus projection screen has a better display effect.
There are various specific arrangements of the protective assembly 20, and the following description will be made in detail with reference to typical examples, but not to be construed as limiting the present application.
Fig. 3 is a schematic structural diagram of a protection component according to an embodiment of the present invention. Illustratively, referring to fig. 3, the protective component 20 includes a substrate 21 and a matte layer 22 in a stacked arrangement; further, the haze of the matte layer 22 is 20% to 80%. Haze refers to the percentage of the total transmitted light intensity that is transmitted above an angle of 2.5 ° from the incident light. The higher the haze, the lower the transparency, and the lower the light transmittance, the poorer the image quality. The smaller the haze is, the worse the anti-glare effect is. The haze of the matte layer 22 is set to be 20% -80%, so that the matte layer 22 has a good anti-glare effect and a good light transmittance.
Preferably, the matte layer 22 includes a plurality of microlenses 221, and the microlenses 221 are arranged on the surface of the matte layer 22 away from the substrate 21, so that the surface of the matte layer 22 away from the substrate 21 is uneven. In the above technical solution, the microstructures 221 in the matte layer 22 mainly have three functions, that is, the light I2 for image display formed after being reflected by the reflection assembly 10 is collected, so as to enhance the brightness of the projection curtain and increase the gain value. Secondly, the anti-glare effect is achieved by diffusing non-projection light (namely, ambient light such as lamplight) incident on the anti-glare film from the outside. Thirdly, the atomizing layer 22 is equivalent to a layer of protection film, because the surface that the atomizing layer 22 deviates from the substrate 21 is uneven, is difficult for forming the mar on it, is difficult for collecting the fingerprint, can improve the holistic resistant anti-soil effect of scraping of projection curtain.
Optionally, the atomizing layer 22 is made of resin with transmittance greater than 85%. Optionally, the thickness of the matte layer 22 ranges from greater than or equal to 10 μm to less than or equal to 50 μm. Set up like this and can make the projection curtain have higher light effect of seeing through to it does not have the influence to the rolling of projection curtain.
With continued reference to fig. 3, alternatively, the perpendicular projection of the microlenses 221 on the substrate 21 can be circular or elliptical; the distance m between the perpendicular projections of two adjacent microlenses 221 on the substrate is greater than or equal to 0 μm and less than or equal to 5 μm; preferably, the height h of the microlens 221 in the first direction is greater than or equal to 1 μm and less than or equal to 10 μm; preferably, the particle diameter r of the microlens 221 is 10 μm or more and 100 μm or less. Research shows that the arrangement can enable the atomizing layer 22 to have better effects of enhancing the brightness of the projection curtain, preventing glare and improving the overall scratch-resistant and anti-fouling effects of the projection curtain.
In practice, the sizes of the microlenses 221 may be the same or different in the same matte layer 22. In the same matte layer 22, the microlenses 221 may be regularly arranged or irregularly arranged. This is not limited by the present application.
Optionally, in the above technical solution, the microlens 221 is formed by using a hot pressing or a UV curing method. On the basis of the above technical solution, optionally, the matte layer 22 is composed of a host material and a dopant material. The main material may be polyurethane resin, polyester resin, polyepoxy resin, polyethylene terephthalate resin, thermoplastic polyurethane elastomer rubber, polycarbonate, or the like. The doping material can be a material with hardness of 3H or a resilient material.
If the matte layer 22 comprises a material having a hardness greater than 3H. Thus, the surface of the atomized layer 22 is not easily scratched during use.
If the matte layer 22 comprises a resilient material. Like this in the use, if receive the extrusion, atomizing layer 22 takes place to warp, and after the removal of pressure, atomizing layer 22 can the reconversion, improves user experience. Alternatively, the material of the base 21 is polyethylene terephthalate resin (PET), thermoplastic polyurethane elastomer rubber (TPU), or Polycarbonate (PC). The thickness of the base material 21 ranges from more than 25 μm to less than 50 μm. Because the thickness of projection curtain is big more, be difficult for the rolling more, set up like this and do not have the influence to the rolling of projection curtain.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. An ultra-short-focus projection curtain is characterized in that the direction from a non-display surface to a display surface of the ultra-short-focus projection curtain is taken as a first direction;
the ultra-short-focus projection curtain comprises a reflection assembly and a protection assembly which are stacked along the first direction;
the reflecting assembly comprises a reflecting prism and a reflecting layer which are sequentially stacked along the first direction;
a plurality of reflecting units are arranged on one side of the reflecting prism close to the reflecting layer, and the cross section of each reflecting unit is triangular;
a hollow structure is arranged between the protection component and the reflection component, and air is filled in the hollow structure;
the adhesive layer is also included;
the cementing layer is positioned between the reflection component and the protection component so as to bond the end part of the reflection unit close to the protection component and the protection component into a whole;
the glue layer comprises a plurality of sub-glue layers; and the vertical projections of the different sub-cementing layers on the protection component are not coincident.
2. The ultra-short focus projection curtain as recited in claim 1, wherein the protective assembly encloses the hollow structure with two of the reflective units disposed adjacent thereto.
3. The ultra-short-focus projection curtain as claimed in claim 1 or 2, wherein each of the sub-adhesive layers integrally bonds the end of the reflection unit close to the protection component and the protection component;
the first distance is separated between every two adjacent sub-cementing layers, the first distance is larger than 0, and is smaller than the distance between the end parts of the adjacent reflection units close to the protection assembly.
4. The ultra-short focus projection curtain as claimed in claim 1 or 2, wherein the material of the glue layer is an acrylate adhesive.
5. The ultra-short focus projection curtain as recited in claim 1, wherein the protective component comprises a substrate and an atomized layer in a stacked arrangement; the haze of the atomization layer is 20% -80%.
6. The ultra-short focus projection curtain as recited in claim 5, wherein the fogging layer comprises a plurality of micro-lenses, the micro-lenses being arranged on a surface of the fogging layer facing away from the substrate.
7. The ultra-short focus projection curtain as recited in claim 6, wherein a perpendicular projection of the microlenses on the substrate is circular or elliptical;
the distance between the vertical projections of two adjacent micro lenses on the substrate is greater than or equal to 0 μm and less than or equal to 5 μm.
8. The ultra-short focus projection curtain of claim 6, wherein a height of the microlenses along the first direction is greater than or equal to 1 μ ι η and less than or equal to 10 μ ι η.
9. The ultra-short focus projection curtain of claim 6, wherein the micro-lenses have a particle size greater than or equal to 10 μ ι η and less than or equal to 100 μ ι η.
10. The ultra-short focus projection curtain as recited in claim 6, wherein the matte layer comprises a material having a hardness greater than 3H.
11. An ultra-short focus projection curtain as claimed in claim 6,
the matte layer comprises a resilient material.
12. An ultra-short focus projection curtain as claimed in claim 6,
the base material is polyethylene terephthalate resin, thermoplastic polyurethane elastomer rubber or polycarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811481036.0A CN109343302B (en) | 2018-12-05 | 2018-12-05 | Ultra-short focus projection curtain |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811481036.0A CN109343302B (en) | 2018-12-05 | 2018-12-05 | Ultra-short focus projection curtain |
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| CN109343302A CN109343302A (en) | 2019-02-15 |
| CN109343302B true CN109343302B (en) | 2021-10-26 |
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| CN201811481036.0A Active CN109343302B (en) | 2018-12-05 | 2018-12-05 | Ultra-short focus projection curtain |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206115132U (en) * | 2016-08-19 | 2017-04-19 | 简铭镇 | Ultrashort burnt projection curtain |
| CN106842800A (en) * | 2017-01-13 | 2017-06-13 | 简铭镇 | A kind of ultrashort burnt anti-light projection screen |
| CN106918983A (en) * | 2015-12-24 | 2017-07-04 | 中强光电股份有限公司 | Projection screen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100118397A1 (en) * | 2008-11-11 | 2010-05-13 | Microvision, Inc. | Reduced Laser Speckle Projection Screen |
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2018
- 2018-12-05 CN CN201811481036.0A patent/CN109343302B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918983A (en) * | 2015-12-24 | 2017-07-04 | 中强光电股份有限公司 | Projection screen |
| CN206115132U (en) * | 2016-08-19 | 2017-04-19 | 简铭镇 | Ultrashort burnt projection curtain |
| CN106842800A (en) * | 2017-01-13 | 2017-06-13 | 简铭镇 | A kind of ultrashort burnt anti-light projection screen |
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| CN109343302A (en) | 2019-02-15 |
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