CN103837916B - Retro-reflective film - Google Patents
Retro-reflective film Download PDFInfo
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- CN103837916B CN103837916B CN201410103666.XA CN201410103666A CN103837916B CN 103837916 B CN103837916 B CN 103837916B CN 201410103666 A CN201410103666 A CN 201410103666A CN 103837916 B CN103837916 B CN 103837916B
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- reflection
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- upper bottom
- light
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- 239000000463 material Substances 0.000 claims abstract description 9
- 239000012780 transparent material Substances 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims description 61
- 230000011514 reflex Effects 0.000 claims description 50
- 239000000758 substrate Substances 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 229920000426 Microplastic Polymers 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 57
- 238000010586 diagram Methods 0.000 description 11
- 238000009792 diffusion process Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- Optical Elements Other Than Lenses (AREA)
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, more particularly 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, such as the warning mark on vehicle
Hazard warning markings on will, road, friendship control mark, navigation marker or billboard etc..
It is Counter-reflection membrane structure of the prior art as depicted in figs. 1 and 2, current Counter-reflection membrane comprises at least one of which base
Material layer and one layer of reflex reflection microstructured layers, for reflex reflection microstructure design incident ray opposite side, incident ray
First pass through base material, enter reflex reflection microstructured layers afterwards, carry out corresponding optical total-reflection inside reflex reflection microstructured layers
Afterwards with the direction outgoing contrary with incident illumination.
Counter-reflection membrane structure of the prior art is that incident ray is accorded with by the total reflection characteristic of simple dependence cube corner
The part closing total reflection condition carries out reflex reflection, and the inside that the light that remaining does not meet total reflection condition combines in cube corner is passed through
Repeatedly after catadioptric, small part light is reflected in the form of scattering, and leads to the reflex reflection light viewing angle of this cube corner combination
Degree is little, and after deviateing certain angle, reflection light intensity is little, is unfavorable for being found and plays 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
Light is divided into 2 parts in reflex reflection microstructure portion, meet the light 4 of total reflection condition after micro structure total reflection with
The contrary direction outgoing of incident direction, the light 5 not meeting total reflection condition enters light expansion after the catadioptric of micro structure
Scattered layer 3, carries certain angle with the direction contrary with incident direction in diffusion layer after multiple catadioptric and shines sky
Form scattering in gas.
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 biography
The prism-type Counter-reflection membrane of system, this structure is that the light lose large angle incidence or because not meeting total reflection condition passes through
Glass microballoon diffusion layer carries out catadioptric, and the effect of lifting diffusion is very limited, and this complex structure, and difficulty of processing is larger.
As shown in figure 4, this retroreflective structure needs whole microstructure unit integrally inclines to some direction according to design
Tiltedly certain angle, then recombinant, the Counter-reflection membrane with disunity micro structure is formed by the micro structure combination of different angles.
Such a construction reduces the light of total reflection part, increase scattered light.
Retroreflective structure shown in Fig. 4 is to be combined into by the microstructure unit of different angle, skimble-scamble due to having
Micro structure, difficulty of processing is than larger.
Therefore, for above-mentioned technical problem it is necessary to provide a kind of new Counter-reflection membrane.
Content of the invention
In view of this, it is an object of the invention to provide a kind of Counter-reflection membrane, it is same that it can expand the scattering angle of light
When can guarantee that the energy of retroreflective light again.
To achieve these goals, technical scheme provided in an embodiment of the present invention is as follows:
A kind of Counter-reflection membrane, including substrate layer and reflex reflection microstructured layers, substrate layer is transparent material, and described reflex reflection is micro-
Structure sheaf includes some reflex reflection micro structures, described reflex reflection micro structure include upper bottom surface, bottom surface and connect upper bottom surface and under
3 sides of bottom surface, described upper bottom surface is matsurface.
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-reflectance face, and described upper bottom surface scribbles diffuse-reflectance and applies
Layer.
As a further improvement on the present invention, white plastic granule and/or transparent grain are comprised in described diffuse-reflectance coating.
As a further improvement on the present invention, described upper bottom surface is transmission plane, and described upper bottom surface is attached with diffuse-reflectance layer.
As a further improvement on the present invention, the perspective plane of the upper bottom surface between each reflex reflection micro structure described and bottom surface
Amass than identical or different.
As a further improvement on the present invention, the upper bottom surface of each reflex reflection micro structure described and bottom surface form a folder
Angle, and upper bottom surface is to any direction inclination.
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, described substrate layer material be pet, pmma, pc, in glass transparent material one
Kind or the complex of multiple transparent material.
The method have the advantages that
The Counter-reflection membrane of the present invention both can ensure that the intensity requirement parallel to incident direction reflex reflection light, can will put down again
The capable reflex reflection in the form of scattering of the unnecessary light energy in incident direction, expands scattering while ensureing scattered energy
Angle, expand the viewing angle of Counter-reflection membrane.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments described in invention, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overlooking the structure diagram of Counter-reflection membrane in prior art；
Fig. 2 is the side structure schematic view 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 overlooking the structure diagram of another Counter-reflection membrane in prior art；
Fig. 5 is the structural representation of reflex reflection micro structure in Counter-reflection membrane of the present invention；
Fig. 6 is a kind of optical schematic diagram of Counter-reflection membrane of the present invention (embodiment 1)；
Fig. 7 is a kind of optical schematic diagram of Counter-reflection membrane of the present invention (embodiment 2)；
Fig. 8 moves towards schematic diagram for the Counter-reflection membrane light of traditional structure；
Fig. 9 be embodiment 1 in Counter-reflection membrane light move towards schematic diagram；
Figure 10 is the Counter-reflection membrane light angle of traditional structure and the curve chart of light intensity；
Figure 11 is the curve chart of Counter-reflection membrane light angle and light intensity in embodiment 1；
Figure 12 be embodiment 2 in Counter-reflection membrane light move towards schematic diagram；
Figure 13 is the curve chart of Counter-reflection membrane light angle and light intensity in embodiment 2；
Figure 14 is the curve chart of Counter-reflection membrane light angle and light intensity in embodiment 3；
Figure 15 is the overlooking the structure diagram of Counter-reflection membrane in another embodiment of the present invention；
Figure 16 is the side structure schematic view of Counter-reflection membrane in yet another embodiment of the invention.
Specific embodiment
Describe the present invention below with reference to specific embodiment shown in the drawings.But these embodiments are simultaneously
Do not limit the present invention, structure that those of ordinary skill in the art is made, method or functionally according to these embodiments
Conversion is all contained in protection scope of the present invention.
In order to be able to the more preferable scattering angle expanding light ensures retroreflective light simultaneously again, the present invention proposes a kind of converse
Penetrate film, this Counter-reflection membrane is made up of at least one of which substrate layer and one layer of reflex reflection microstructured layers, if reflex reflection microstructured layers include
Dry reflex reflection micro structure, in other embodiments, can increase by one layer of diffuse-reflectance layer.
As shown in figure 5, in the present invention reflex reflection micro structure include upper bottom surface 21, bottom surface 22 and connect upper bottom surface and under
At least 3 sides 23 of bottom surface, define reflex reflection micro structure side to tend to the intersecting face held is upper bottom surface 21, corresponding title
For bottom surface 22.Preferably, bottom surface 22 is equilateral triangle, and side is three, and three sides are in mutually about 90 ° of angles.
Upper bottom surface 21 is matsurface, can be used as diffuse-reflectance face or transmission plane, during as diffuse-reflectance face, can apply diffuse-reflectance in this face and apply
Layer, diffuse-reflectance coating can comprise pmmapc or other white plastic granules can also mix the transparent grains such as glass microballoon,
When as transmission plane, one layer of diffuse-reflectance layer need to be pasted in this face and be used for diffuse-reflectance.
Reflex reflection micro structure is attached on substrate layer, and substrate layer material is pet, pmma, pc, glass or other transparent materials
One or more transparent material complex.Light is incident to substrate layer first, enters the micro- knot of reflex reflection after substrate layer
Structure layer, in reflex reflection microstructured layers, total reflection zonal ray can be totally reflected, in diffuse-reflectance region or regional transmission, light
Line can carry out diffuse-reflectance or transmission, and the light after transmission carries out diffuse-reflectance in diffuse-reflectance layer.
In conjunction with shown in Fig. 6, the first Counter-reflection membrane of the present invention comprises substrate layer 10 and reflex reflection microstructured layers 20, converse
Penetrate microstructured layers and comprise upper bottom surface 21, bottom surface 22 and 3 sides 23, upper bottom surface is all equilateral triangle, and three sides are mutual
Mutually it is in about 90 degree.Wherein, the upper bottom surface 21 in reflex reflection microstructured layers 20 is also attached with diffuse-reflectance layer 30.
Light is incident to Counter-reflection membrane, is divided into 3 parts in microstructure portion light:
1. meet the light 6 of total reflection condition by reflex reflection in the form of being totally reflected；
2. it is emitted directly toward upper bottom surface another part light 7 and will transmit through upper bottom surface and be incident to diffuse-reflectance layer, through diffuse-reflectance layer
Diffuse-reflectance after formed reflex reflection；
3. other do not meet total reflection condition does not have the light 8 of directive upper bottom surface to carry out in micro structure and diffuse-reflectance interlayer yet
Also form reflection after multiple catadioptric.
In actual design can by adjusting the area of upper bottom surface and bottom surface ratio controlling the energy of scattering light, with
Meet application request.
In conjunction with shown in Fig. 7, the second Counter-reflection membrane of the present invention comprises substrate layer 10 and reflex reflection microstructured layers 20, converse
Penetrate microstructured layers and comprise upper bottom surface 21, bottom surface 22 and 3 sides 23, upper bottom surface is all equilateral triangle, and three sides are mutual
Mutually be in about 90 degree, wherein upper bottom surface scribbles diffuse-reflectance coating (not shown), diffuse-reflectance coating can comprise pmma, pc or other
White plastic granule can also mix the transparent grains such as glass microballoon.
Light is incident to Counter-reflection membrane, is divided into 3 parts in microstructure portion light:
1. meet the light 6 of total reflection condition by reflex reflection in the form of being totally reflected；
2. it is emitted directly toward and reflected in the form of scattering for irreflexive upper bottom surface another part light 7；
3. other do not meet total reflection condition also not have the light 8 in directive diffuse-reflectance face to carry out in microstructure portion multiple
Part reflex reflection after catadioptric, partial loss.
In actual design can by adjusting the area of upper bottom surface and bottom surface ratio controlling the energy of scattering light, with
Meet application request.
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1:
As shown in fig. 6, a kind of Counter-reflection membrane, including one layer of substrate layer, one layer of reflex reflection microstructured layers and one layer of attachment
In the diffuse-reflectance layer of micro structure upper surface, the area ratio about 0.197 of reflex reflection micro structure upper bottom surface and bottom surface, base material reflects
Rate is 1.6, and the refractive index of micro structure is 1.56, and diffuse-reflectance layer has irreflexive effect to incident ray.A branch of less parallel
Light beam be incident to this Counter-reflection membrane from afar, after base material enter microstructure area, in microstructure portion and diffuse-reflectance layer
Between carry out catadioptric.
Fig. 8 is that the Counter-reflection membrane light of traditional structure moves towards schematic diagram, by Fig. 8 it can be seen that its light concentrates on certain angle
Degree scope, light beam is concentrated, and dispersion angle is little and the light of some direct outgoing after catadioptric is lost.
Fig. 9 be through the present embodiment improve after Counter-reflection membrane after light move towards schematic diagram, light can be seen by Fig. 9
Line some light after Counter-reflection membrane concentrates on reflex reflection in certain angle, and it is relatively decentralized that light compares Fig. 8 ratio, another portion
In certain large angle scattering and overall light energy loss is little for light splitter.
Figure 10 is the curve chart of traditional structure light angle and light intensity, show that by Figure 10 the Counter-reflection membrane of traditional structure is general
Overall scattering angle be about 80 ° about, reflectance is excessively concentrated, and observer's slightly angle deviating just can not find well
Reverberation.
Figure 11 be the micro structure that the present embodiment adopts obtained by light angle and light intensity curve chart, this is found out by Figure 11
The distribution again that the Counter-reflection membrane of embodiment is carried out to light ray energy, the intensity suitably reducing front reflex reflection light expands simultaneously
The big viewing angle of object reflected light.The overall scattering angle of the present embodiment is found out close to 180 ° by Figure 11, central light strength is compared
Though Figure 10 decreases, the viewing angle expanding can allow the observer in larger viewing angle also can find depositing of reverberation
?.
Embodiment 2:
As shown in fig. 7, a kind of Counter-reflection membrane, including one layer of substrate layer, one layer of reflex reflection microstructured layers, bottom on Counter-reflection membrane
Face scribbles diffuse-reflectance coating, and diffuse-reflectance coating can comprise pmma or other white plastic granules can also mix glass microballoon
Deng transparent grain.
As shown in figure 12, a branch of approximately parallel light beam is incident to this Counter-reflection membrane from afar, is entered after substrate layer
Microstructure area, carries out catadioptric in microstructure portion.Light some light after Counter-reflection membrane can be seen by Figure 12
Concentrate on reflex reflection in certain angle, another part light is in certain large angle scattering and overall light energy loss
Little.Fig. 8 and Fig. 9 relatively, the dispersion effect of the present embodiment is more preferably.
Figure 13 be the micro structure that the present embodiment adopts obtained by light angle and light intensity curve chart, likewise, center
Though light intensity decreases, the viewing angle expanding can allow the observer in larger viewing angle also can find depositing of reverberation
?.
Embodiment 3:
In the present embodiment, the upper bottom surface of reflex reflection micro structure is fabricated to matsurface (matte face), remaining all with embodiment 1
Identical, with respect to common plane in embodiment 1, the surface irregularity in matte face can play more preferable diffusion and make to light
With.Obtain Figure 14 luminosity curve through simulation, relatively common plane Figure 11 is luminous, in the present embodiment as seen from Figure 14
Diffusion light energy is more many.
Further, in other embodiments, as shown in figure 15, permissible between reflex reflection micro structure in same Counter-reflection membrane
There are different upper and lower floor space ratios, to control the energy of scattering light according to actual requirement.
Further, in other embodiments, as shown in figure 16, the upper bottom surface of reflex reflection micro structure and bottom surface are formed
One angle, can tilt to any direction, then be combined, and angle more than or equal to 0 degree and can be less than or equal to 30 degree, with according to reality
Border requires to control radiation direction.
As can be seen from the above embodiments, compared with prior art, the Counter-reflection membrane of the present invention both can ensure that parallel to
The intensity requirement of incident direction reflex reflection light, again can be with will be inverse in the form of scattering for the unnecessary light energy parallel to incident direction
Reflection, expands the angle of scattering while ensureing scattered energy, expands the viewing angle of Counter-reflection membrane.
Counter-reflection membrane of the present invention, will be unnecessary parallel to incident direction also by increasing diffuse-reflectance coating or diffuse-reflectance layer
Light energy in the form of scattering reflex reflection, ensure parallel to incident light direction reflex reflection light intensity while expand again scattered
Firing angle degree, improves scattering energy, expands the viewing angle of Counter-reflection membrane, and object still can be made to be found and play police
It is shown as using.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as limiting involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment only wraps
Containing an independent technical scheme, only for clarity, those skilled in the art should for this narrating mode of description
Using description as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (7)
1. a kind of Counter-reflection membrane, including substrate layer and reflex reflection microstructured layers, substrate layer is transparent material, the micro- knot of described reflex reflection
Structure layer includes some reflex reflection micro structures it is characterised in that described reflex reflection micro structure includes upper bottom surface, bottom surface and connects
Upper bottom surface and 3 sides of bottom surface, described upper bottom surface is matsurface；
When described upper bottom surface is diffuse-reflectance face, described upper bottom surface scribbles diffuse-reflectance coating；
When described upper bottom surface is transmission plane, described upper bottom surface is attached with diffuse-reflectance layer.
2. Counter-reflection membrane according to claim 1 is it is characterised in that the angle between described adjacent side is 90 °.
3. Counter-reflection membrane according to claim 1 is it is characterised in that comprise white plastic granule in described diffuse-reflectance coating
And/or transparent grain.
4. Counter-reflection membrane according to claim 1 it is characterised in that upper bottom surface between each reflex reflection micro structure described and
The projected area of bottom surface is than identical or different.
5. Counter-reflection membrane according to claim 1 it is characterised in that the upper bottom surface of each reflex reflection micro structure described and under
Bottom surface shape has angle, and upper bottom surface tilts to any direction.
6. Counter-reflection membrane according to claim 5 is it is characterised in that described angle is more than or equal to 0 degree and is less than or equal to 30
Degree.
7. Counter-reflection membrane according to claim 1 is it is characterised in that described substrate layer material is pet, pmma, pc, glass
The complex of one or more transparent material of middle transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410103666.XA CN103837916B (en) | 2014-03-19 | 2014-03-19 | Retro-reflective film |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN103837916A CN103837916A (en) | 2014-06-04 |
| CN103837916B true CN103837916B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410103666.XA Active CN103837916B (en) | 2014-03-19 | 2014-03-19 | Retro-reflective film |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995229B (en) * | 2020-09-09 | 2022-08-02 | 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 |
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| CN103837916A (en) | 2014-06-04 |
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