CN206573735U - A kind of infrared external reflection laminated film - Google Patents
A kind of infrared external reflection laminated film Download PDFInfo
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- CN206573735U CN206573735U CN201621342176.6U CN201621342176U CN206573735U CN 206573735 U CN206573735 U CN 206573735U CN 201621342176 U CN201621342176 U CN 201621342176U CN 206573735 U CN206573735 U CN 206573735U
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Abstract
The utility model discloses a kind of infrared external reflection laminated film, it is formed by stacking by M group unit membranes, every group of unit membrane respectively there is N number of identical to be respectively n by ranges of indices of refraction1And n2Two kinds of polymer materials A and the periodic structures that combine of polymeric material B, realize the reflection to first and second energy peak infrared band of reflection infrared band, amount of cycles can be reduced simultaneously, unit membrane zone of reflections central wavelength lambda is derived from the first energy peak (760nm~940nm) and the second energy peak (940nm~1130nm), and the zone of reflections centre wavelength value of M group unit membranes is followed successively by λ1, λ2..., λM；Periodic structure thickness is followed successively by corresponding N number of unit membrane：(λ1/4n1)/(λ1/4n2), (λ2/4n1)/(λ2/4n2) ..., (λM/4n1)/(λM/4n2).In the case where meeting fundamental reflection requirement, increase the gap between different-thickness as far as possible, reduce the periodicity of each unit membrane, good foundation is provided for thin film fabrication.
Description
Technical field
Laminated film is reflected the present invention relates to a kind of new infrared, belongs to optical reflection technical field.
Background technology
Optical thin film is a kind of film for the transmissivity and reflectivity effect for reaching and changing predetermined band light.Penetrate film conduct
One kind of optical film, is widely used in various optics and infrared component, solar cell and high-power laser system.It is existing
There is technology to penetrate film because scope is not wide, then Film Design is less with respect to the number of plies, and film layer is less thick.
On the other hand, film is penetrated in the reflection of currently known application widely, typically all using metals such as gold, silver, aluminium
Or metal carries out reflecting penetrating being coated with for film with the semi-conducting material such as dielectric material or silicon, germanium, material cost is higher.Prior art
In be related to infrared broad-band reflective and penetrate that the available infrared film item kind of film is few, Film Design difficulty is very big, must so having
Select the design of more preferably material and optimization membrane system.
The content of the invention
The technical problem existed based on background technology, the present invention proposes a kind of new infrared reflection laminated film, full
Under sufficient fundamental reflection requirement, increase the gap between different-thickness as far as possible, reduce the periodicity of each unit membrane, improve thickness essence
Degree.
Adopt the technical scheme that to achieve the above object, a kind of infrared external reflection laminated film, by M groups unit membrane superposition and
Into every group of unit membrane respectively there is N number of identical to be respectively n by ranges of indices of refraction1And n2Two kinds of polymer materials A and B combination
Periodic structure, realize to reflection the energy peak of infrared band first (760nm~940nm) with the second energy peak (940nm~
1130nm) the reflection of infrared band, while amount of cycles can be reduced, unit membrane zone of reflections central wavelength lambda is derived from the first energy
Peak (760nm~940nm) and the second energy peak (940nm~1130nm), the zone of reflections centre wavelength value of M group unit membranes are followed successively by
λ1, λ2..., λM。
The unit membrane meets nd=λ/4, and wherein n is the refractive index of polymeric material, and d is the thickness in monolayer of material, and λ is
Unit membrane zone of reflections centre wavelength.
The present invention relates to a kind of infrared external reflection laminated film, the zone of reflections centre wavelength value of M group unit membranes is followed successively by λ1,
λ2..., λM, it is to consider the optimum structure parameter determined after average reflectance and periodic thickness difference.It is corresponding N number of
PMMA/PET periodic structure thickness in unit membrane is followed successively by：(λ1/4n1)/(λ1/4n2), (λ2/4n1)/(λ2/4n2) ..., (λM/
4n1)/(λM/4n2)。
A kind of new infrared reflection laminated film of the present invention, advantage is that its Film Design is simple, lower cost for material.
Meet under fundamental reflection requirement, increase the gap between different-thickness as far as possible, reduce the periodicity of each unit membrane, improve thickness
Precision.
Brief description of the drawings
Fig. 1 is a kind of high anti-laminated film of new infrared.
Embodiment
The present invention proposes a kind of new infrared reflection laminated film, mainly for the reflection energy peak of infrared band first
(760nm~940nm) and the second energy peak (940nm~1130nm), while amount of cycles can be reduced.
Embodiment 1
The infrared external reflection laminated film is formed by stacking by 4 groups of unit membranes, as shown in figure 1, every group of unit membrane has respectively
There are 64 identicals by polymethyl methacrylate (PMMA) and poly terephthalic acid that refractive index is respectively 1.491 and 1.655
The periodic structure that glycol ester (PET) two kinds of polymer is combined, realizes that the reflection to infrared band is penetrated.Preceding two groups of unit membranes
The energy peak of key reflections first, rear two groups of unit membrane key reflections second energy peak.
The unit membrane meets nd=λ/4, and wherein n is the refractive index of polymeric material, and d is the thickness in monolayer of material, and λ is
Unit membrane zone of reflections centre wavelength.
The zone of reflections centre wavelength value of 4 groups of unit membranes is followed successively by 790nm, 890nm, 990nm, 1090nm, is simultaneously
With relatively higher average reflectance and the optimum structure parameter than larger periodic thickness difference.Corresponding N number of unit
PMMA/PET periodic structure thickness in film is followed successively by：132.4614nm/119.3353nm, 149.2287nm/134.4411nm,
165.9960nm/149.5468nm, 182.7632nm/164.6526nm.To solar spectrum middle-infrared band (760nm~
Gross energy reflection efficiency 1130nm) reaches 87.39%, with good reflecting effect.
λ1Take 790nm, λ2Take 847nm/850nm/860nm/870nm/880nm/890nm/900nm/905nm/910nm/
915nm, it is as shown in table 1 to the first energy peak reflecting effect and periodic thickness difference of infrared band.
The difference of table 1. λ2Contrast effect table
| Design | λ1(nm) | λ2(nm) | Rv | Δd(nm) |
| 1 | 790 | 847 | 71.83% | 18.2 |
| 2 | 790 | 850 | 72.6% | 19.1 |
| 3 | 790 | 860 | 76.37% | 22.3 |
| 4 | 790 | 870 | 78.83% | 25.5 |
| 5 | 790 | 880 | 80.66% | 28.7 |
| 6 | 790 | 890 | 81.53% | 31.9 |
| 7 | 790 | 900 | 80.99% | 35.1 |
| 8 | 790 | 905 | 81.41% | 36.7 |
| 9 | 790 | 910 | 79.17% | 38.2 |
| 10 | 790 | 915 | 78.03% | 39.8 |
The result of the 6th kind of design best suits requirement in table 1, while having the high average reflectance of comparison and than larger
Periodic thickness difference.
λ3Take 990nm, λ41060nm/1070nm/1080nm/1090nm/1100nm is taken, to the second energy of infrared band
Peak reflecting effect and periodic thickness difference are as shown in table 2.
The difference of table 2. λ4Contrast effect table
| Design | Λ3(nm) | λ4(nm) | Rv | Δd(nm) |
| 1 | 990 | 1060 | 83.01% | 22.3 |
| 2 | 990 | 1070 | 86.28% | 25.5 |
| 3 | 990 | 1080 | 88.75% | 28.7 |
| 4 | 990 | 1090 | 89.27% | 31.9 |
| 5 | 990 | 1100 | 85.86% | 35.1 |
The result of the 4th kind of design best suits requirement in table 2, while having the high average reflectance of comparison and than larger
Periodic thickness difference.
Embodiment 2
The zone of reflections centre wavelength value of 4 groups of unit membranes is followed successively by 1068.4434nm, 874.5766nm,
792.4918nm, 988.3798nm, are the optimum structure parameters by being determined after genetic algorithm global optimization, 4 groups of unit membranes
Order can not be exchanged, final to realize the maximization to the energy reflectivity of infrared spectrum.In corresponding 4 unit membranes
PMMA/PET periodic structure thickness is followed successively by：179.1488nm/161.3963nm, 146.6426nm/132.1113nm,
132.8792nm/119.7118nm,165.7243nm/149.3021nm.4 groups of optimal unit membranes are to infrared waves in solar spectrum
The gross energy reflection efficiency of section (760nm-1130nm) reaches 90.58%.
A kind of new infrared reflection laminated film of the present invention, advantage is that its Film Design is simple, lower cost for material.
Meet under fundamental reflection requirement, increase the gap between different-thickness as far as possible, reduce the periodicity of each unit membrane, be film system
Make there is provided good foundation.
The scope of the present invention is defined by the appended claims and its equivalents, not by specific embodiment institute
Limitation.
Claims (4)
1. a kind of infrared external reflection laminated film, it is characterised in that：It is formed by stacking by M group unit membranes, every group of unit membrane has N respectively
Individual identical is respectively n by ranges of indices of refraction1And n2Two kinds of polymer materials A and polymeric material B combine cycle knot
Structure, is realized to reflection infrared band the first energy peak 760nm-940nm and the second energy peak 940nm-1130nm infrared band
Reflection, while amount of cycles can be reduced, unit membrane zone of reflections central wavelength lambda is derived from the first energy peak 760nm-940nm and the
The zone of reflections centre wavelength value of two energy peak 940nm-1130nm, M group unit membranes is followed successively by λ1, λ2..., λM；Corresponding N
Periodic structure thickness is followed successively by individual unit membrane：(λ1/4n1)/(λ1/4n2), (λ2/4n1)/(λ2/4n2) ..., (λM/4n1)/(λM/
4n2)。
2. a kind of infrared external reflection laminated film according to claim 1, it is characterised in that：Polymeric material A is PMMA, is gathered
Compound material B is PET.
3. a kind of infrared external reflection laminated film according to claim 2, it is characterised in that：M=4, every group of unit membrane has respectively
The cycle for having 64 identicals to be combined by PMMA the and PET two kinds of polymer that refractive index is respectively 1.491 and 1.655 ties
Structure, the zone of reflections centre wavelength value of 4 groups of unit membranes is followed successively by 790nm, 890nm, 990nm, 1090nm, corresponding N number of list
PMMA/PET periodic structure thickness in first film is followed successively by：132.4614nm/119.3353nm, 149.2287nm/
134.4411nm, 165.9960nm/149.5468nm, 182.7632nm/164.6526nm.
4. a kind of infrared external reflection laminated film according to claim 2, it is characterised in that：M=4, every group of unit membrane has respectively
The cycle for having 64 identicals to be combined by PMMA the and PET two kinds of polymer that refractive index is respectively 1.491 and 1.655 ties
Structure, the zone of reflections centre wavelength value of 4 groups of unit membranes is followed successively by 1068.4434 nm, 874.5766 nm, 792.4918 nm,
PMMA/PET periodic structure thickness in 988.3798 nm, corresponding 4 unit membranes is followed successively by：179.1488 nm /
161.3963 nm, 146.6426 nm/132.1113 nm, 132.8792 nm/119.7118 nm, 165.7243 nm/
149.3021 nm。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621342176.6U CN206573735U (en) | 2016-12-08 | 2016-12-08 | A kind of infrared external reflection laminated film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621342176.6U CN206573735U (en) | 2016-12-08 | 2016-12-08 | A kind of infrared external reflection laminated film |
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| CN206573735U true CN206573735U (en) | 2017-10-20 |
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| CN201621342176.6U Expired - Fee Related CN206573735U (en) | 2016-12-08 | 2016-12-08 | A kind of infrared external reflection laminated film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680921A (en) * | 2016-12-08 | 2017-05-17 | 北京化工大学 | Infrared reflection composite film |
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2016
- 2016-12-08 CN CN201621342176.6U patent/CN206573735U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680921A (en) * | 2016-12-08 | 2017-05-17 | 北京化工大学 | Infrared reflection composite film |
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Granted publication date: 20171020 Termination date: 20191208 |