CN203037946U - Photonic crystal ultraviolet protection glasses - Google Patents
Photonic crystal ultraviolet protection glasses Download PDFInfo
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- CN203037946U CN203037946U CN 201320017319 CN201320017319U CN203037946U CN 203037946 U CN203037946 U CN 203037946U CN 201320017319 CN201320017319 CN 201320017319 CN 201320017319 U CN201320017319 U CN 201320017319U CN 203037946 U CN203037946 U CN 203037946U
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- photonic
- photonic crystal
- ultraviolet protection
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- electromagnetic waves
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Abstract
The utility model discloses a pair of photonic crystal ultraviolet protection glasses which consists of eyeglasses and a photonic crystal layer, wherein the photonic crystal layer is arranged on the surfaces of the eyeglasses and consists of a Ge medium protection layer and a MgF2 medium protection layer; photonic crystals are provided with a photonic forbidden band with a periodic structure; and in the forbidden band, after electromagnetic waves are dispersed through a dielectric function, the intensity of the electromagnetic waves in some wave bands shows index attenuation because of destructive interference, so that the electromagnetic waves cannot be transmitted in a system. According to the photonic crystal ultraviolet protection glasses, due to the forbidden band characteristic of the photonic crystals, the electromagnetic waves of which the frequency falls into a photonic band slot cannot be transmitted in the photonic crystals, so that the photonic crystals made of non-absorbed dielectric materials can reflect incident light coming from any direction, and the reflection rate is nearly 100 percent.
Description
Technical field
The utility model relates to the photonic crystal field, is specifically related to realize the photonic crystal ultraviolet protection glasses of ultraviolet protection function.
Background technology
At present, mixing in a large amount of general adopting quartz glass of ultraviolet protection glasses that market occurs absorbs ultraviolet material, perhaps in the method for eyeglass plating reflective film, can reach certain ultraviolet protection function.But adopt the mode of these simple plated films, only pay close attention to its ultraviolet radiation protective effect, ignore it to the see-through of visible light.Though reduced ultraviolet radiation, human eye reduces the visibility of object, causes pupil to amplify simultaneously, and the eyeground is accepted ultraviolet ray and increased, and does not reach the ultraviolet radiation protective effect of anticipation.
The utility model content
The utility model provides photonic crystal ultraviolet protection glasses for solving the problems of the technologies described above, and these glasses are uv reflectance expeditiously, can also reach the high-transmission rate to visible light, farthest the restore target thing.
The utility model is that the technical scheme that the deficiency that solves the problems of the technologies described above adopts is: photonic crystal ultraviolet protection glasses, formed by eyeglass and layer of photonic crystals, layer of photonic crystals is arranged on the surface of eyeglass, and layer of photonic crystals is by Ge medium protective layer and MgF
2The medium protective layer is formed, MgF
2Be Ge medium protective layer between medium protective layer and the eyeglass, the centre wavelength of photonic crystal is got 283nm, and the thickness of Ge medium protective layer is 17.7nm, and the thickness of MgF2 medium protective layer is 51.2nm.
The beneficial effects of the utility model are: can on the basis of realizing the high reflection of ultraviolet ray the visible light height be seen through.Be that glasses are avoided ultraviolet injury, do not influence the visual effect of eyes again.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is (Ge) (MgF
2) transmitance with the curve of wavelength variations;
Among the figure: 1, eyeglass, 2, layer of photonic crystals, 201, Ge medium protective layer, 202, MgF
2The medium protective layer.
Embodiment
As shown in the figure, photonic crystal ultraviolet protection glasses are made up of eyeglass 1 and layer of photonic crystals 2, and layer of photonic crystals 2 is arranged on the surface of eyeglass 1, and layer of photonic crystals 2 is by Ge medium protective layer 201 and MgF
2Medium protective layer 202 is formed MgF
2Be Ge medium protective layer 201 between medium protective layer 202 and the eyeglass 1, the centre wavelength of photonic crystal is got 283nm, and the thickness of Ge medium protective layer 201 is 17.7nm, MgF
2The thickness of medium protective layer 202 is 51.2nm.
Adopt this kind photonic crystal plated film, filter range is 200-400nm, and in the forbidden band, after the scattering of electromagnetic wave process dielectric function, the electromagnetic intensity of some wave band can present exponential damping because of destruction interference, can't transmit in system.Photonic crystal ultraviolet protection glasses utilize the forbidden band characteristic of photonic crystal, the electromagnetic wave that frequency drops in the photon band gap can not be propagated in photonic crystal, therefore the photonic crystal of selecting not have the dielectric material of absorption to make can reflect incident light in any direction, and reflectivity is almost 100%.Present technique based on photonic crystal theoretical research push over, the MATLAB emulation experiment, select suitable dielectric material germanium (Ge) and the magnesium fluoride (MgF that the high reflection of ultraviolet ray is seen through the visible light height
2) as photonic crystal periodic structure medium, determine best photonic crystal periodic structure, the photonic crystal thicknesses of layers.Employing only be several microns crystal film with photon at lens surface plating thickness, realization photonic crystal ultraviolet protection.
The method for making of photonic crystal ultraviolet protection glasses is:
Step 1, get a 36mm spectacle glass as substrate, with the substrate twin polishing, standby;
Step 2, the substrate surface that processes is cleaned processing, adopt acidic cleaning solution and deionized water cleaning base plate respectively, substrate is placed on the hot plate dry then, 65 ° of temperature, 10 minutes time;
Step 3, substrate is put into vacuum coating equipment, carry out the plated film of Ge medium, Ge refractive index n in one surface
A=4, when centre wavelength was got 283nm, its coating film thickness was
, i.e. 17.7nm, dry cooling is 30 minutes behind the plated film, carries out MgF on the surface that substrate is coated with Ge medium protective layer then
2The plated film of medium, MgF
2Refractive index n
B=1.38, when centre wavelength was got 283nm, its coating film thickness was
, i.e. 51.2nm, dry cooling is 30 minutes behind the plated film, makes photonic crystal ultraviolet protection glasses.
Vacuum coating equipment of the present utility model adopts DM-450 type vacuum coating equipment, bell jar size: Φ 450 mm * 540 mm, and end vacuum :≤6.5 * 10-4 Pa, bleed the time: when vacuum tightness reaches 1.3 * 10-3 Pa, t≤50 min.
Film plating process of the present utility model can be realized at heavy plumbous x-ray protection surface layer of glass plated film by modern vacuum ion plating method, vacuum magnetic-control sputtering method, vacuum vapor deposition method, chemical gaseous phase deposition method, sol-gel processing and hot-pressing technique.
Claims (1)
1. photonic crystal ultraviolet protection glasses, it is characterized in that: be made up of eyeglass (1) and layer of photonic crystals (2), layer of photonic crystals (2) is arranged on the surface of eyeglass (1), and layer of photonic crystals (2) is by Ge medium protective layer (201) and MgF
2Medium protective layer (202) is formed, MgF
2Be Ge medium protective layer (201) between medium protective layer (202) and the eyeglass (1), the centre wavelength of photonic crystal is got 283nm, and the thickness of Ge medium protective layer (201) is 17.7nm, MgF
2The thickness of medium protective layer (202) is 51.2nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017319 CN203037946U (en) | 2013-01-14 | 2013-01-14 | Photonic crystal ultraviolet protection glasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017319 CN203037946U (en) | 2013-01-14 | 2013-01-14 | Photonic crystal ultraviolet protection glasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203037946U true CN203037946U (en) | 2013-07-03 |
Family
ID=48690056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320017319 Withdrawn - After Issue CN203037946U (en) | 2013-01-14 | 2013-01-14 | Photonic crystal ultraviolet protection glasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203037946U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091867A (en) * | 2013-01-14 | 2013-05-08 | 河南科技大学 | Photonic crystal ultraviolet protection glasses |
| CN104007489A (en) * | 2014-05-16 | 2014-08-27 | 河南科技大学 | Photonic crystal coating film lens and preparing method thereof |
| CN104051040A (en) * | 2014-06-18 | 2014-09-17 | 河南科技大学 | Photonic crystal nuclear radiation protection mask |
| CN114839798A (en) * | 2022-04-11 | 2022-08-02 | 深圳先进技术研究院 | Structural color contact lens based on thin film photonic crystal and preparation method thereof |
-
2013
- 2013-01-14 CN CN 201320017319 patent/CN203037946U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091867A (en) * | 2013-01-14 | 2013-05-08 | 河南科技大学 | Photonic crystal ultraviolet protection glasses |
| CN104007489A (en) * | 2014-05-16 | 2014-08-27 | 河南科技大学 | Photonic crystal coating film lens and preparing method thereof |
| CN104007489B (en) * | 2014-05-16 | 2016-04-27 | 河南科技大学 | A kind of photonic crystal plated film lens and preparation method thereof |
| CN104051040A (en) * | 2014-06-18 | 2014-09-17 | 河南科技大学 | Photonic crystal nuclear radiation protection mask |
| CN114839798A (en) * | 2022-04-11 | 2022-08-02 | 深圳先进技术研究院 | Structural color contact lens based on thin film photonic crystal and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130703 Effective date of abandoning: 20140402 |
|
| RGAV | Abandon patent right to avoid regrant |