CN204740365U - Wide -angle optics mixing of colors device based on disordered metal cylinder array - Google Patents
Wide -angle optics mixing of colors device based on disordered metal cylinder array Download PDFInfo
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- CN204740365U CN204740365U CN201520491191.6U CN201520491191U CN204740365U CN 204740365 U CN204740365 U CN 204740365U CN 201520491191 U CN201520491191 U CN 201520491191U CN 204740365 U CN204740365 U CN 204740365U
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- 229910052709 silver Inorganic materials 0.000 claims description 7
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Abstract
The utility model discloses a wide -angle optics mixing of colors device based on disordered metal cylinder array. The device is including white light light source, a collimating lens, polaroid, glass basement, cylinder array, the 2nd collimating lens, focusing lens, single mode fiber, spectrum appearance, be equipped with the cylinder array in the glass basement, be equipped with polaroid, a collimating lens, white light light source in order below the glass basement, be equipped with the 2nd collimating lens, focusing lens, single mode fiber, spectrum appearance in order above the glass basement. The absorption reinforcing that utilizes the surperficial plasma resonance effect of the local that forms to make the incident light locate at a certain wavelength in single cylinder, the transmission rate that the transmitted light is corresponding wavelength department receives the suppression to the modulation of realization colour. The utility model has the advantages of simple structure, the little easy integration of size, high temperature resistant radiation, it is irrelevant insensitive with the angle to the incident light polarization, there is good application prospect in the digital formula demonstration of the integration in future, projection, imaging device and biomedical check out test set.
Description
Technical field
The utility model belongs to optical filter field, particularly relates to a kind of optical color matching device of the wide-angle based on disordered metal cylindrical-array.
Background technology
In recent years for overcome the color filter of conventional organic dyes or chemical pigment corrosion-resistant, high temperature resistant, radiation hardness is poor and integrated technique is complicated, high in cost of production shortcoming, the color filter based on surface plasmons causes to be studied widely.Color filter based on surface plasmons makes it can overcome the shortcoming of above-mentioned conventional color wave filter due to its structure and material behavior, but actual alternate application will be realized, still there is the such as problem such as transmissivity, polarization correlated, angle-dependence, the integrated size faced to need to solve.
In disclosed patent and document, under transmissive mode of operation, existing research emphasis concentrates on and utilizes periodic metal micro structure to solve in the problems such as transmissivity, polarization, size.It utilizes periodic structure to the diffraction of light, and incident light is coupled to metal surface with the form of surface plasmons, is achieved the regulating and controlling effect of color by selective absorbing humidification.But these methods exist a very large problem, to the modulation that light wave is vowed, there is the inherent sensitive question to incident angle of light, thus make to utilize the incident angle of color control method to light that periodically metal micro structure realizes to have very strong susceptibility.The angle-dependence problem that this periodic structure look is introduced is solved preferably.Therefore new solution to this color filter be comparatively crucial and also in the urgent need to.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and the polarization provided based on disordered metal cylindrical-array has nothing to do, the optical color matching device of wide-angle.
A kind of optical color matching device based on disordered metal cylindrical-array wide-angle comprises white light source, the first collimation lens, polaroid, substrate of glass, cylindrical-array, the second collimation lens, condenser lens, single-mode fiber, spectrometer; Be provided with cylindrical-array on the glass substrate, be provided with polaroid, the first collimation lens, white light source below substrate of glass in turn, side is provided with the second collimation lens, condenser lens, single-mode fiber, spectrometer in turn on the glass substrate.
The material that described cylindrical-array adopts is silver, and its thickness is 20 ~ 40nm, and diameter is 66 ~ 166nm.
Between described cylindrical-array cylinder, shortest spacing is more than 80nm.
Design the low duty ratio super thin metal silver cylindrical-array of random alignment on the glass substrate, when the white light of random polarization is incident from substrate of glass, light forms surface plasmons at glass-metal interface, the local surface plasma resonance effect formed within the scope of single cylindrical is utilized to make incident light at the influx and translocation at a certain wavelength place, thus transmitted light is suppressed in the transmissivity at corresponding wavelength place, in visible-range, finally achieve the complementary color of this wavelength corresponding color.The regulation and control of color only just can need be realized by the diameter changing cylinder simply.By introducing this restrictive condition of minimum spacing between cylinder, ensure that local surface plasma resonance effect separate between cylinder, thus realize the polarization independence of this shading process and adapt to the characteristic of wide-angle.
It is simple that the utility model has structure, size is little is easy to integrated, high temperature resistant radiation, the advantages such as irrelevant and angle is insensitive to incident light polarization, show in the integrated digital formula in future, project, have good application prospect in imaging device and biomedical checkout equipment.
Accompanying drawing explanation
Fig. 1 is the optical color matching device schematic diagram of the wide-angle based on disordered metal cylindrical-array;
The vertical view of the color filter that Fig. 2 is substrate of glass (4), cylindrical-array (5) is formed;
Fig. 3 is the emulation transmittance graph of the color filter of corresponding three different body diameters;
Fig. 4 is the transmittance graph of color filter under different incident light polarization direction of testing correspondence three the different body diameters recorded;
Fig. 5 tests the transmittance graph of color filter under different incidence angles condition that the Correspondent cy linder diameter recorded is 106nm.
Embodiment
The polarization that the utility model proposes based on disordered metal cylindrical-array has nothing to do, the optical color matching device of wide-angle.This ager make use of the effect of the local surface plasma resonance that single cylinder excites, white light is on micro-nano structure array, transmissivity minimal value can be produced at certain wave band of spectrum, and to the light beyond this wavelength, there is superelevation transmissivity, this color filter can present the complementary color of color corresponding to this minimal value wavelength accordingly.The advantages such as this shading process has that structure is simple, and size is little is easy to integrated, high temperature resistant radiation, and irrelevant and angle is insensitive to incident light polarization.
Below in conjunction with drawings and Examples, the utility model is described further.
As shown in Figure 1, a kind of optical color matching device based on disordered metal cylindrical-array wide-angle comprises white light source 1, first collimation lens 2, polaroid 3, substrate of glass 4, cylindrical-array 5, second collimation lens 6, condenser lens 7, single-mode fiber 8, spectrometer 9; Substrate of glass 4 is provided with cylindrical-array 5, below substrate of glass 4, is provided with polaroid 3, first collimation lens 2, white light source 1 in turn, above substrate of glass 4, is provided with the second collimation lens 6, condenser lens 7, single-mode fiber 8, spectrometer 9 in turn.
The material that described cylindrical-array 5 adopts is silver, and its thickness is 20 ~ 40nm, and diameter is 66 ~ 166nm.
Between described cylindrical-array 5 cylinder, shortest spacing is more than 80nm.
Optical color matching method based on disordered metal cylindrical-array wide-angle is: incident white light light source 1 is after the first collimation lens 2 collimates, linear polarization white light is converted to again by polaroid 3, then be incident to substrate of glass 4 and cylindrical-array 5, optical modulation is become to select with relevant the having of cylinder size the emergent light of wave property by the surface plasma resonance effect formed by substrate of glass and the interface of cylindrical-array; Emergent light carries out collimating through the second collimation lens 6 and condenser lens 7, focus on after to be collected by single-mode fiber 8 and enter spectrometer 9, finally obtain its curve of spectrum; Changed the polarization direction of incident light by rotatory polarization sheet 3, the modulating characteristic under different incident light polarization direction is constant, and the wavelength that namely the transmissivity minimum point of modulated spectrum is corresponding is constant, and transmitted light color remains unchanged; Change incident angle by slanted glass substrate 4 and cylindrical-array 5, when incident angle is increased to 60 degree from 0 degree, the wavelength that the transmissivity minimum point of modulated spectrum is corresponding only changes 30nm.
According to structural representation as shown in Figure 2, adopt lift-off technique, prepare unordered silver dollar post according to different structural parameters (diameter of cylinder) on the glass substrate.First get rid of one deck photoresist PMMA on the glass substrate, then the method for electron beam exposure (EBL) is utilized to need to expose unordered circular hole (diameter range 66nm ~ 166nm) on a photoresist according to parameter, after development, recycle the method silverskin that evaporation last layer 40nm is thick of electron beam evaporation plating thereon, finally the argent ultrasonic cleaning of residue photoresist and disposed thereon thereof is fallen just to obtain silver dollar post unordered in substrate of glass.
Embodiment
Be that the unordered silver dollar rod structure wave filter of 76nm, 96nm, 106nm, 166nm carries out preparation and polarization thereof, angle-dependence research below with diameter.
This embodiment has prepared the different color filter based on disordered metal cylindrical-array of a series of diameter, Fig. 3 shows the transmittance graph that body diameter is respectively three color filters of 76nm, 96nm, 166nm, as can be seen from the figure most high-transmission rate can reach about 70% ~ 80%, by changing body diameter from 76nm to 166nm, the minimum point achieving transmission spectrum from 495nm be tuned to 644nm, cover most of visible-range, for three color filters that body diameter is 76nm, 96nm, 166nm, its transmittance graph is compared respectively with regard to two kinds of different incident light polarization states (polarization direction is mutually vertical), as seen from Figure 4 for three color filters, its transmission spectrum all keeps consistance preferably under different incident light polarization states, show the independence of this shading process to polarization, the nuance occurred in figure is because on the field coupled effect not completely between elimination cylinder and cylinder distribution space, also imperfections is even caused, be the structure of 106nm for body diameter, under natural polarization conditions, changing incident angle of light by inclination color filter is 10 degree, 30 degree, 40 degree, 50 degree, 60 degree, measure respectively and compare its transmittance graph, incident angle is increased to 60 degree from 10 degree as can be seen from Figure 5, the minimum point of its transmittance graph only there occurs small red shift, roughly red shift 30nm, show angle insensitivity preferably, and its difference in transmissivity is because when incident angle of light difference, the electric field component that incident light is parallel to metal-glass interface is different, finally cause the intensity of the surface plasma resonance excited different, thus make transmissivity meeting in intensity variant.
Claims (3)
1. the optical color matching device based on the wide-angle of disordered metal cylindrical-array, it is characterized in that, comprise white light source (1), the first collimation lens (2), polaroid (3), substrate of glass (4), cylindrical-array (5), the second collimation lens (6), condenser lens (7), single-mode fiber (8), spectrometer (9); Substrate of glass (4) is provided with cylindrical-array (5), be provided with polaroid (3), the first collimation lens (2), white light source (1) in turn in substrate of glass (4) below, be provided with the second collimation lens (6), condenser lens (7), single-mode fiber (8), spectrometer (9) in turn in substrate of glass (4) top.
2. the optical color matching device of a kind of wide-angle based on disordered metal cylindrical-array according to claim 1, is characterized in that,
The material that described cylindrical-array (5) adopts is silver, and its thickness is 20 ~ 40nm, and diameter is 66 ~ 166nm.
3. the optical color matching device of a kind of wide-angle based on disordered metal cylindrical-array according to claim 1, is characterized in that,
Between described cylindrical-array (5) cylinder, shortest spacing is more than 80nm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520491191.6U CN204740365U (en) | 2015-07-09 | 2015-07-09 | Wide -angle optics mixing of colors device based on disordered metal cylinder array |
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| CN201520491191.6U CN204740365U (en) | 2015-07-09 | 2015-07-09 | Wide -angle optics mixing of colors device based on disordered metal cylinder array |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965253A (en) * | 2015-07-09 | 2015-10-07 | 浙江大学 | Disordered metallic cylinder array-based large-angle optical color modulation device and method |
| CN108474874A (en) * | 2015-12-23 | 2018-08-31 | 皇家飞利浦有限公司 | For the pathological calibration glass slide of number |
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2015
- 2015-07-09 CN CN201520491191.6U patent/CN204740365U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965253A (en) * | 2015-07-09 | 2015-10-07 | 浙江大学 | Disordered metallic cylinder array-based large-angle optical color modulation device and method |
| CN104965253B (en) * | 2015-07-09 | 2017-04-26 | 浙江大学 | Disordered metallic cylinder array-based large-angle optical color modulation device and method |
| CN108474874A (en) * | 2015-12-23 | 2018-08-31 | 皇家飞利浦有限公司 | For the pathological calibration glass slide of number |
| CN108474874B (en) * | 2015-12-23 | 2022-07-01 | 皇家飞利浦有限公司 | Calibration slides for digital pathology |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20180709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |