CN103837916A - Retro-reflective film - Google Patents
Retro-reflective film Download PDFInfo
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- CN103837916A CN103837916A CN201410103666.XA CN201410103666A CN103837916A CN 103837916 A CN103837916 A CN 103837916A CN 201410103666 A CN201410103666 A CN 201410103666A CN 103837916 A CN103837916 A CN 103837916A
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- reflection
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Abstract
The invention discloses a retro-reflective film which comprises a base material layer and a retro-reflective microstructure layer. The base material layer is made of transparent materials. The retro-reflective microstructure layer comprises a plurality of retro-reflective microstructures. Each retro-reflective microstructure comprises an upper bottom face, a lower bottom face and three lateral faces connecting the upper bottom face and the lower bottom face. The upper bottom faces are rough faces. The retro-reflective film can guarantee the requirements for the intensity of retro-reflective light parallel to the incident direction, can also conduct retro-reflection on spare light energy parallel to the incident direction in a scattering mode, therefore, it is guaranteed that the light energy is scattered, meanwhile, the scattering angle is enlarged, and the observation angle of the retro-reflective film is enlarged.
Description
Technical field
The present invention relates to optical technical field, particularly relate to a kind of Counter-reflection membrane.
Background technology
Counter-reflection membrane has been widely used in the aspects such as various traffic alarms and personal security, as mark, navigation marker or billboard etc. are controlled in the warning against danger mark on warning notice, road on vehicle, friendship.
Be Counter-reflection membrane structure of the prior art as depicted in figs. 1 and 2, current Counter-reflection membrane comprises at least one deck substrate layer and one deck reflex reflection microstructured layers, be used for the microstructure design of reflex reflection at the opposite side of incident ray, first incident ray passes through base material, enter afterwards reflex reflection microstructured layers, after corresponding optical total-reflection is carried out in reflex reflection microstructured layers inside with the direction outgoing contrary with incident light.
Counter-reflection membrane structure of the prior art is that the total reflection characteristic of simple dependence cube corner part that incident ray is met to total reflection condition is carried out reflex reflection, all the other light that do not meet total reflection condition reflect with the form of scattering through small part light after catadioptric repeatedly in the inside of cube corner combination, cause the reflex reflection light viewing angle of this cube corner combination little, after departing from certain angle, reflection ray intensity is little, is unfavorable for being found and playing warning function.
As shown in Figure 3, this Counter-reflection membrane is mainly by substrate layer 1, reflex reflection microstructured layers 2 and light diffusion layer 3 form, incident ray is divided into 2 parts in reflex reflection microstructure inside, meet the light 4 process microstructure total reflections of total reflection condition afterwards with the direction outgoing contrary with incident direction, after the catadioptric of the light 5 that does not meet total reflection condition through microstructures, enter light diffusion layer 3, after diffusion layer is through catadioptric repeatedly, carry certain angle secretly with the direction contrary with incident direction and form scattering in shining air.
Counter-reflection membrane shown in Fig. 3 is the combination of glass microballoon type Counter-reflection membrane and prism-type Counter-reflection membrane, with respect to traditional prism-type Counter-reflection membrane, this structure is to carry out catadioptric by wide-angle incident or because not meeting the light that total reflection condition loses by glass microballoon diffusion layer, the effect that promotes diffusion is very limited, and this complex structure, difficulty of processing is larger.
As shown in Figure 4, this retroreflective structure need to be by whole microstructure unit to some direction integral inclination certain angles according to design, and then combination, are combined to form the Counter-reflection membrane with disunity microstructure by the microstructure of different angles.Such structure decrease the light of total reflection part, increased scattered light.
Retroreflective structure shown in Fig. 4 is to be combined into by the microstructure unit of different angle, and owing to having skimble-scamble microstructure, difficulty of processing is larger.
Therefore,, for above-mentioned technical matters, be necessary to provide a kind of new Counter-reflection membrane.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of Counter-reflection membrane, its scattering angle that can expand light can ensure again the energy of reflex reflection light simultaneously.
To achieve these goals, the technical scheme that the embodiment of the present invention provides is as follows:
A kind of Counter-reflection membrane, comprise substrate layer and reflex reflection microstructured layers, substrate layer is transparent material, described reflex reflection microstructured layers comprises some reflex reflection microstructures, described reflex reflection microstructure comprises 3 sides of upper bottom surface, bottom surface and connection upper bottom surface and bottom surface, and described upper bottom surface is uneven surface.
As a further improvement on the present invention, the angle between described adjacent side is 90 °.
As a further improvement on the present invention, described upper bottom surface is diffuse surface, and described upper bottom surface scribbles diffuse reflection coating.
As a further improvement on the present invention, in described diffuse reflection coating, comprise white plastic particle and/or transparent grain.
As a further improvement on the present invention, described upper bottom surface is transmission plane, and described upper bottom surface is attached with diffuse reflector.
As a further improvement on the present invention, the projected area ratio of the upper bottom surface between described each reflex reflection microstructure and bottom surface is identical or different.
As a further improvement on the present invention, the upper bottom surface of described each reflex reflection microstructure and bottom surface shape have angle, and upper bottom surface tilts to any direction.
As a further improvement on the present invention, described angle is more than or equal to 0 degree and is less than or equal to 30 degree.
As a further improvement on the present invention, the complex that described substrate layer material is one or more transparent materials of transparent material in PET, PMMA, PC, glass.
The present invention has following beneficial effect:
Counter-reflection membrane of the present invention both can ensure to be parallel to the requirement of incident direction reflex reflection light intensity, can will be parallel to the unnecessary luminous energy of incident direction with the form reflex reflection of scattering again, in ensureing scattered energy, expand the angle of scattering, expanded the viewing angle of Counter-reflection membrane.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the plan structure schematic diagram of Counter-reflection membrane in prior art;
Fig. 2 is the side-looking structural representation of Counter-reflection membrane in prior art;
Fig. 3 is the optical schematic diagram of another Counter-reflection membrane in prior art;
Fig. 4 is the plan structure schematic diagram of another Counter-reflection membrane in prior art;
Fig. 5 is the structural representation of reflex reflection microstructure in Counter-reflection membrane of the present invention;
Fig. 6 is the optical schematic diagram of a kind of Counter-reflection membrane of the present invention (embodiment 1);
Fig. 7 is the optical schematic diagram of a kind of Counter-reflection membrane of the present invention (embodiment 2);
Fig. 8 be traditional structure Counter-reflection membrane light move towards schematic diagram;
Fig. 9 be in embodiment 1 Counter-reflection membrane light move towards schematic diagram;
Figure 10 is the Counter-reflection membrane light angle of traditional structure and the curve map of light intensity;
Figure 11 is the curve map of Counter-reflection membrane light angle and light intensity in embodiment 1;
Figure 12 be in embodiment 2 Counter-reflection membrane light move towards schematic diagram;
Figure 13 is the curve map of Counter-reflection membrane light angle and light intensity in embodiment 2;
Figure 14 is the curve map of Counter-reflection membrane light angle and light intensity in embodiment 3;
Figure 15 is the plan structure schematic diagram of Counter-reflection membrane in another embodiment of the present invention;
Figure 16 is the side-looking structural representation of Counter-reflection membrane in yet another embodiment of the invention.
Embodiment
Describe the present invention below with reference to embodiment shown in the drawings.But these embodiments do not limit the present invention, the conversion in structure, method or function that those of ordinary skill in the art makes according to these embodiments is all included in protection scope of the present invention.
For the scattering angle that can better expand light ensures again reflex reflection light simultaneously, the present invention proposes a kind of Counter-reflection membrane, this Counter-reflection membrane is by least one deck substrate layer and one deck reflex reflection microstructured layers form, reflex reflection microstructured layers comprises some reflex reflection microstructures, in other embodiments, can increase one deck diffuse reflector.
As shown in Figure 5, in the present invention, reflex reflection microstructure comprises upper bottom surface 21, bottom surface 22 and connects at least 3 sides 23 of upper bottom surface and bottom surface, and the face that definition reflex reflection microstructure side is tending towards intersecting end is upper bottom surface 21, with it the corresponding bottom surface 22 that is called.Preferably, bottom surface 22 is equilateral triangle, and side is three, and three sides are mutually approximately 90 ° of angles.Upper bottom surface 21 is uneven surface, can be used as diffuse surface or transmission plane, during as diffuse surface, can be coated with diffuse reflection coating at this face, diffuse reflection coating can comprise PMMAPC or other white plastic particles also can mix the transparent grains such as glass microballoon, when as transmission plane, need paste one deck diffuse reflector for diffuse reflection at this face.
Reflex reflection microstructure is attached on substrate layer, and substrate layer material is the complex of one or more transparent materials of PET, PMMA, PC, glass or other transparent materials.First light be incident to substrate layer, after substrate layer, enter reflex reflection microstructured layers, in reflex reflection microstructured layers, total reflection zonal ray can carry out total reflection, at diffuse reflection region or regional transmission, light can carry out diffuse reflection or transmission, and the light after transmission carries out diffuse reflection at diffuse reflector.
Shown in Fig. 6, the first Counter-reflection membrane of the present invention comprises substrate layer 10 and reflex reflection microstructured layers 20, and reflex reflection microstructured layers comprises upper bottom surface 21,22 and 3 sides 23 of bottom surface, and upper bottom surface is all equilateral triangle, three sides are mutually approximately 90 degree.Wherein, on the upper bottom surface 21 in reflex reflection microstructured layers 20, be also attached with diffuse reflector 30.
Light is incident to Counter-reflection membrane, is divided into 3 parts in microstructure internal light:
1. meet the light 6 of total reflection condition by the form reflex reflection with total reflection;
2. directly directive upper bottom surface another part light 7 will be incident to diffuse reflector through upper bottom surface, form reflex reflection after the diffuse reflection through diffuse reflector;
3. other do not meet total reflection condition does not have the light 8 of directive upper bottom surface after carrying out catadioptric repeatedly between microstructure and diffuse reflector, to form reflection yet yet.
Can be by regulating the area of upper bottom surface and bottom surface recently to control the energy of scattered beam, with realistic application requirements in the time of actual design.
Shown in Fig. 7, the second Counter-reflection membrane of the present invention comprises substrate layer 10 and reflex reflection microstructured layers 20, reflex reflection microstructured layers comprises upper bottom surface 21,22 and 3 sides 23 of bottom surface, upper bottom surface is all equilateral triangle, and three sides are mutually approximately 90 degree, and wherein upper bottom surface scribbles diffuse reflection coating (not shown), diffuse reflection coating can comprise PMMA, and PC or other white plastic particles also can mix the transparent grains such as glass microballoon.
Light is incident to Counter-reflection membrane, is divided into 3 parts in microstructure internal light:
1. meet the light 6 of total reflection condition by the form reflex reflection with total reflection;
2. directly directive form reflection with scattering for irreflexive upper bottom surface another part light 7;
3. other do not meet total reflection condition does not have the light 8 of directive diffuse surface to carry out catadioptric rear section reflex reflection repeatedly, partial loss in microstructure inside yet.
Can be by regulating the area of upper bottom surface and bottom surface recently to control the energy of scattered beam, with realistic application requirements in the time of actual design.
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1:
As shown in Figure 6, a kind of Counter-reflection membrane, comprise that one deck substrate layer, one deck reflex reflection microstructured layers and one deck are attached to the diffuse reflector of microstructure upper surface, the Area Ratio of reflex reflection microstructure upper bottom surface and bottom surface is about 0.197, base material refractive index is 1.6, the refractive index of microstructure is 1.56, and diffuse reflector has irreflexive effect to incident ray.A branch of approximately parallel light beam is incident to this Counter-reflection membrane from afar, by base material laggard enter microstructure area, between microstructure inside and diffuse reflector, carry out catadioptric.
Fig. 8 is that the Counter-reflection membrane light of traditional structure moves towards schematic diagram, can see that by Fig. 8 its light concentrates on certain angular range, and light beam is concentrated, and little and some the light of dispersion angle is through directly outgoing loss after catadioptric.
Fig. 9 be after the Counter-reflection membrane after the present embodiment improves light move towards schematic diagram, can see that by Fig. 9 light concentrates on reflex reflection in certain angle through part light after Counter-reflection membrane, light is compared Fig. 8 and is relatively disperseed, and it is little that another part light is certain large angle scattering and overall light energy loss.
Figure 10 is the curve map of traditional structure light angle and light intensity, is shown that the general overall scattering angle of Counter-reflection membrane of traditional structure is about 80 ° of left and right by Figure 10, and reflection potential is too concentrated, and observer slightly angle deviating just can not well find reverberation.
Figure 11 is the light angle that obtains of microstructure that adopts of the present embodiment and the curve map of light intensity, found out the distribution again that the Counter-reflection membrane of the present embodiment carries out light ray energy by Figure 11, suitably reduced front reflex reflection light intensity and expanded the catoptrical viewing angle of object simultaneously.The overall scattering angle of being found out the present embodiment by Figure 11 approaches 180 °, decreases though central light strength is compared Figure 10, and the observer that the viewing angle expanding can allow in larger viewing angle also can find the existence of reverberation.
Embodiment 2:
As shown in Figure 7, a kind of Counter-reflection membrane, comprises one deck substrate layer, one deck reflex reflection microstructured layers, and Counter-reflection membrane upper bottom surface scribbles diffuse reflection coating, and diffuse reflection coating can comprise PMMA or other white plastic particles also can mix the transparent grains such as glass microballoon.
As shown in figure 12, a branch of approximately parallel light beam is incident to this Counter-reflection membrane from afar, by substrate layer laggard enter microstructure area, carry out catadioptric in microstructure inside.Can see that by Figure 12 light concentrates on reflex reflection in certain angle through part light after Counter-reflection membrane, it is little that another part light is certain large angle scattering and overall light energy loss.Fig. 8 and Fig. 9 relatively, the dispersion effect of the present embodiment is better.
Figure 13 is the light angle that obtains of microstructure that adopts of the present embodiment and the curve map of light intensity, and same, though central light strength decreases, the observer that the viewing angle expanding can allow in larger viewing angle also can find the existence of reverberation.
Embodiment 3:
In the present embodiment, the upper bottom surface of reflex reflection microstructure is made into uneven surface (Matte face), all the other are all identical with embodiment 1, and with respect to plane common in embodiment 1, the surface irregularity of Matte face can play better diffusion to light.Obtain Figure 14 luminosity curve through simulation, relative common plane Figure 11's is luminous as seen from Figure 14, and the diffusion light energy in the present embodiment is more many.
Further, in other embodiments, as shown in figure 15, in same Counter-reflection membrane, between reflex reflection microstructure, can there is different upper and lower floorage ratios, with according to the energy of actual requirement control scattered beam.
Further, in other embodiments, as shown in figure 16, the upper bottom surface of reflex reflection microstructure and bottom surface shape have angle, and can tilt to any direction, then combine, angle can be more than or equal to 0 degree and be less than or equal to 30 degree, with according to actual requirement control radiation direction.
As can be seen from the above embodiments, compared with prior art, Counter-reflection membrane of the present invention both can ensure to be parallel to the requirement of incident direction reflex reflection light intensity, can will be parallel to the unnecessary luminous energy of incident direction with the form reflex reflection of scattering again, in ensureing scattered energy, expand the angle of scattering, expanded the viewing angle of Counter-reflection membrane.
Counter-reflection membrane of the present invention is also by increasing diffuse reflection coating or diffuse reflector, to be parallel to the unnecessary luminous energy of incident direction with the form reflex reflection of scattering, in ensureing to be parallel to incident light direction reflex reflection light intensity, expand again scattering angle, improve scattared energy, expand the viewing angle of Counter-reflection membrane, and still can make object be found and play warning function.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in the present invention.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this instructions is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should make instructions as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (9)
1. a Counter-reflection membrane, comprise substrate layer and reflex reflection microstructured layers, substrate layer is transparent material, described reflex reflection microstructured layers comprises some reflex reflection microstructures, it is characterized in that, described reflex reflection microstructure comprises 3 sides of upper bottom surface, bottom surface and connection upper bottom surface and bottom surface, and described upper bottom surface is uneven surface.
2. Counter-reflection membrane according to claim 1, is characterized in that, the angle between described adjacent side is 90 °.
3. Counter-reflection membrane according to claim 1, is characterized in that, described upper bottom surface is diffuse surface, and described upper bottom surface scribbles diffuse reflection coating.
4. Counter-reflection membrane according to claim 3, is characterized in that, in described diffuse reflection coating, comprises white plastic particle and/or transparent grain.
5. Counter-reflection membrane according to claim 1, is characterized in that, described upper bottom surface is transmission plane, and described upper bottom surface is attached with diffuse reflector.
6. Counter-reflection membrane according to claim 1, is characterized in that, the upper bottom surface between described each reflex reflection microstructure and the projected area ratio of bottom surface are identical or different.
7. Counter-reflection membrane according to claim 1, is characterized in that, the upper bottom surface of described each reflex reflection microstructure and bottom surface shape have angle, and upper bottom surface tilts to any direction.
8. Counter-reflection membrane according to claim 7, is characterized in that, described angle is more than or equal to 0 degree and is less than or equal to 30 degree.
9. Counter-reflection membrane according to claim 1, is characterized in that, described substrate layer material is the complex of one or more transparent materials of transparent material in PET, PMMA, PC, glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410103666.XA CN103837916B (en) | 2014-03-19 | 2014-03-19 | Retro-reflective film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410103666.XA CN103837916B (en) | 2014-03-19 | 2014-03-19 | Retro-reflective film |
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| CN103837916A true CN103837916A (en) | 2014-06-04 |
| CN103837916B CN103837916B (en) | 2017-01-18 |
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| CN201410103666.XA Active CN103837916B (en) | 2014-03-19 | 2014-03-19 | Retro-reflective film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995229A (en) * | 2020-09-09 | 2020-11-27 | 江苏师范大学 | Composite light-storing ceramic for fire indication and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4588258A (en) * | 1983-09-12 | 1986-05-13 | Minnesota Mining And Manufacturing Company | Cube-corner retroreflective articles having wide angularity in multiple viewing planes |
| CN1162998A (en) * | 1994-11-09 | 1997-10-22 | 瑞弗莱克塞特公司 | A retroreflective structure and method for forming the structure |
| CN1946593A (en) * | 2004-04-07 | 2007-04-11 | 3M创新有限公司 | License plate assembly comprising light source and backlit license plate |
| CN102721989A (en) * | 2012-06-21 | 2012-10-10 | 绵阳龙华薄膜有限公司 | Retro reflecting film |
-
2014
- 2014-03-19 CN CN201410103666.XA patent/CN103837916B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4588258A (en) * | 1983-09-12 | 1986-05-13 | Minnesota Mining And Manufacturing Company | Cube-corner retroreflective articles having wide angularity in multiple viewing planes |
| CN1162998A (en) * | 1994-11-09 | 1997-10-22 | 瑞弗莱克塞特公司 | A retroreflective structure and method for forming the structure |
| CN1946593A (en) * | 2004-04-07 | 2007-04-11 | 3M创新有限公司 | License plate assembly comprising light source and backlit license plate |
| CN102721989A (en) * | 2012-06-21 | 2012-10-10 | 绵阳龙华薄膜有限公司 | Retro reflecting film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995229A (en) * | 2020-09-09 | 2020-11-27 | 江苏师范大学 | Composite light-storing ceramic for fire indication and preparation method thereof |
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| CN103837916B (en) | 2017-01-18 |
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