CN203606527U - Infrared ray filter lens - Google Patents
Infrared ray filter lens Download PDFInfo
- Publication number
- CN203606527U CN203606527U CN201320802593.4U CN201320802593U CN203606527U CN 203606527 U CN203606527 U CN 203606527U CN 201320802593 U CN201320802593 U CN 201320802593U CN 203606527 U CN203606527 U CN 203606527U
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- China
- Prior art keywords
- layer
- infrared ray
- silicon dioxide
- filter
- infrared
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- Expired - Lifetime
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 48
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 24
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 15
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000002834 transmittance Methods 0.000 abstract description 7
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 abstract 2
- 238000003384 imaging method Methods 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000002310 reflectometry Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000008447 perception Effects 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
Provided is an infrared ray filter lens which comprises a light-transmitting substrate and a plated film which is arranged on the light-transmitting substrate. The plated film comprises multi-layer niobium pentoxide layers and multi-layer silicon dioxide layers. Each niobium pentoxide layer and each silicon dioxide layer are alternatively superposed. The infrared ray filter lens is wider in visible light transmission wave band and higher wave band infrared ray reflection wave band so that the infrared ray filter lens is better in visible light transmittance and infrared ray heat insulation.
Description
Technical field
The utility model relates to a kind of optical module, especially a kind of for ending the infrared filter of Infrared.
Background technology
In recent years, along with various digital imaging apparatus, such as the fast development of digital camera or video camera, it has progressively replaced traditional egative film camera; Because the optical module of digital imaging apparatus is greater than the induction range of human eye for the induction range of light, for example, digital imaging apparatus can be responded to the Infrared that human eye cannot perception, in the time using digital imaging apparatus to carry out imaging to taken the photograph object, as Infrared is not covered, the color of the object of imaging will be different from the color of human eye institute perception, and causes digital imaging apparatus cannot carry out accurate imaging.Therefore, digital imaging apparatus is on the market installed optical filter conventionally between its photosensory assembly, so that the incident light of infra-red range is covered, thereby makes the color of imaging of digital imaging apparatus closer to the color of human eye institute perception.
Infrared filter is as the one of optical filter, and it is mainly used in isolating infrared ray, and visible ray is passed through, thereby obtains effect of heat insulation.Infrared filter structure generally includes transparent substrates and is arranged on the multicoating on transparent substrates at present, by the plated film of various different refractivities is set on transparent substrates, can adjust reflectivity and the penetrance of filter for various light.Due in normal dispersion situation, plated film is roughly directly proportional to light frequency for the refractive index of various light waves, for reflectivity and the penetrance of light wave, only relevant with plated film, and with wavelength or the frequency-independent of light wave, therefore, can think, by the various plated films with different refractivity are combined, can only make filter synchronously improve or reduce reflectivity and penetrance for the light wave of various wavelength, for the light wave of screening different wave length, substantially inoperative.
As shown in the above, filter is screened for the light wave of various wavelength, as visible ray is passed as far as possible, and infrared ray is isolated as far as possible, need to improve the penetrance of filter, need again to improve the screening capacity of filter, for screening capacity, by regulating the thickness of each layer of plated film, can adjust the reflectivity of plated film for the light wave of various wavelength, as infrared ray is carried out to high-efficiency reflective, and visible ray poor efficiency be reflected, thereby isolation infrared ray, anti-reflection visible ray.But, existing infrared filter, visible ray is seen through to optical band to focus mostly at 400nm-650nm, and infrared reflection wave band is concentrated on to 700nm-1100nm scope conventionally, therefore, in order to improve visible ray light transmission and the infrared ray thermal insulation of filter, be necessary traditional filter structure further to make improvement.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of infrared filter, and this infrared filter has wider visible transmission wave band, and the infrared reflection wave band of high band more, thereby has more good visible ray light transmission and infrared ray thermal insulation.
For solving the problems of the technologies described above, the utility model adopts following technical proposals: this infrared filter comprises transparent substrates and is arranged on the plated film on described transparent substrates, described plated film comprises multilayer niobium pentaoxide layer and multilayer silicon dioxide layer, and described each niobium pentaoxide layer and each silicon dioxide layer be stack alternately.
According to design concept of the present utility model, described silicon dioxide layer and niobium pentaoxide layer amount to 66 layers.
According to design concept of the present utility model, the odd-level of described plated film is niobium pentaoxide layer, and even level is silicon dioxide layer.
Compared with prior art, the utlity model has following beneficial effect: because niobium pentaoxide has very high refractive index, the wavelength band seeing through is wider, and the refractive index of silicon dioxide layer is lower and light transmission rate is higher, experimental results show that, when adopting filter structure of the present utility model while filtering, can make wavelength band reach 99.1% at the average transmittance of the visible ray of 400nm-790nm, high transmission rate reaches 99.82%; And the ultrared average transmittance that makes wavelength band be positioned at 880nm-1300nm only has 0.39%, minimum light transmission rate only has 0.04%, therefore, compared with traditional infrared filter, filter of the present utility model has wider visible transmission wave band, and the infrared reflection wave band of high band more, thereby there is more good visible ray light transmission and infrared ray thermal insulation.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model infrared filter.
Fig. 2 is that the light of the various wavelength of the utility model passes through the transmittance of infrared filter of the present utility model.
Embodiment
The utility model relates generally to a kind of optical filter, it is mainly used in filtering infrared ray light, the visible visible luminous energy of human eye is passed through in the larger context, simultaneously, make to be filtered compared with the infrared ray light of broadband scope, and then improve visible ray light transmission and the infrared ray thermal insulation of product.
The sectional structure schematic diagram of the utility model infrared filter, this infrared filter comprises transparent substrates 3 and plated film 4, described plated film 4 is arranged on the surface of transparent substrates 3, the material of this transparent substrates 3 can be glass, transparent polymer material or other applicable light transmissive material, the preferred 0.15mm-0.33mm of its thickness.
In order to make more visible ray see through this filter, and more infrared ray is intercepted, plated film 4 of the present utility model comprises niobium pentaoxide layer and silicon dioxide layer, described niobium pentaoxide layer is the niobium pentaoxide membrane layer that adopts the mode of evaporation or sputter to form on transparent substrates 3, same, described silicon dioxide layer is also the silica membrane layer that adopts the mode of evaporation or sputter to form on transparent substrates 3; In order to make the filter effect of this infrared filter better, niobium pentaoxide layer of the present utility model and silicon dioxide layer are all set to multilayer, and each niobium pentaoxide layer and the alternately stack of each silicon dioxide layer.
Referring to Fig. 1, because niobium pentaoxide has very high refractive index, the wavelength band seeing through is wider, and the refractive index of silicon dioxide layer is lower and light transmission rate is higher, in order to make filter better to ultrared filter effect, as most preferred embodiment of the present utility model, silicon dioxide layer of the present utility model is 33 layers, and niobium pentaoxide layer is also set to 33 layers, be that silicon dioxide layer and niobium pentaoxide layer amount to 66 layers, meanwhile, make the odd-level of plated film 4 be set to niobium pentaoxide layer, even level is set to silicon dioxide layer.
As shown in fig. 1, the odd-level 11,12 of plated film 4 is to odd-level 132,133, and totally 33 layers of this odd-levels, are niobium pentaoxide layer; And even level 21 is to even level 232,233, this even level also has 33 layers, is silicon dioxide layer; What need to describe is, because silicon dioxide layer of the present utility model and niobium pentaoxide layer are provided with 66 layers altogether, for the convenience of describing, in Fig. 1, be symbolistic which floor adjacent silicon dioxide layer and the niobium pentaoxide layer structure of showing, according to the structure shown in figure, be easy to expect the overlaying structure of other silicon dioxide layer of each layer of the utility model and niobium pentaoxide layer.
Referring to Fig. 2, verify by experiment known, in the time that the light of various wavelength passes through infrared filter of the present utility model, its transmittance as shown in Figure 2, as can be seen from Figure 2, when wavelength band is at the visible ray of 400nm-790nm during by filter of the present utility model, its average transmittance can reach 99.1%, high transmission rate reaches 99.82%, and therefore, its visible light transmissivity is high; And the infrared ray that is positioned at 880nm-1300nm when wavelength band is during by filter of the present utility model, its average transmittance only has 0.39%, and minimum light transmission rate only has 0.04%, and therefore, it is to infrared ray good wave filtering effect, and wavelength band is high.
From the above analysis, infrared filter of the present utility model, compared with traditional infrared filter, it has wider visible transmission wave band, and the infrared reflection wave band of high band more, thereby there is more good visible ray light transmission and infrared ray thermal insulation.
Claims (3)
1. an infrared filter, comprises transparent substrates and is arranged on the plated film on described transparent substrates, it is characterized in that: described plated film comprises multilayer niobium pentaoxide layer and multilayer silicon dioxide layer, and described each niobium pentaoxide layer and each silicon dioxide layer be stack alternately.
2. infrared filter as claimed in claim 1, is characterized in that, described silicon dioxide layer and niobium pentaoxide layer amount to 66 layers.
3. infrared filter as claimed in claim 2, is characterized in that: the odd-level of described plated film is niobium pentaoxide layer, and even level is silicon dioxide layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802593.4U CN203606527U (en) | 2013-12-09 | 2013-12-09 | Infrared ray filter lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802593.4U CN203606527U (en) | 2013-12-09 | 2013-12-09 | Infrared ray filter lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203606527U true CN203606527U (en) | 2014-05-21 |
Family
ID=50719192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320802593.4U Expired - Lifetime CN203606527U (en) | 2013-12-09 | 2013-12-09 | Infrared ray filter lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203606527U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293297A (en) * | 2016-08-12 | 2017-01-04 | 信利光电股份有限公司 | A kind of touch screen and touch terminal equipment |
| CN114660696A (en) * | 2020-12-22 | 2022-06-24 | 宁波激智科技股份有限公司 | Light guide plate with infrared ray transmitting and visible light reflecting functions and backlight module |
-
2013
- 2013-12-09 CN CN201320802593.4U patent/CN203606527U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293297A (en) * | 2016-08-12 | 2017-01-04 | 信利光电股份有限公司 | A kind of touch screen and touch terminal equipment |
| CN114660696A (en) * | 2020-12-22 | 2022-06-24 | 宁波激智科技股份有限公司 | Light guide plate with infrared ray transmitting and visible light reflecting functions and backlight module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |
|
| CX01 | Expiry of patent term |