CN206557417U - A kind of Metal absorption type COVER diaphragms - Google Patents
A kind of Metal absorption type COVER diaphragms Download PDFInfo
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- CN206557417U CN206557417U CN201720147281.2U CN201720147281U CN206557417U CN 206557417 U CN206557417 U CN 206557417U CN 201720147281 U CN201720147281 U CN 201720147281U CN 206557417 U CN206557417 U CN 206557417U
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Abstract
The utility model discloses a kind of Metal absorption type COVER diaphragms, it is desirable to provide one kind has high-selenium corn and low reflecting properties, the Metal absorption type COVER diaphragms for the problem of being effectively reduced imaging dazzle and ghost.It includes substrate；And it is arranged on the metal medium film of substrate surface, and the region of metal medium film covering constitutes the shading region of COVER diaphragms, the metal medium film includes the interior dielectric film, metallic film and outer dielectric film being sequentially distributed outward by substrate surface, the metallic film is metal chromium thin film, and the interior dielectric film and outer dielectric film are alternately stacked and formed successively by chromium oxide film with silicon oxide film.
Description
Technical field
The utility model is related to the COVER diaphragms of imaging lens, and in particular to a kind of Metal absorption type COVER windows
Piece.
Background technology
There is two-part light in imaging lens, one is the shading region for inciding COVER diaphragms（The table of COVER diaphragms
Face is divided into transparent zone and shading region）External stray light, this part light needs directly to be predominantly absorbed, it is to avoid disturb imaging；Two
It is that the transparent zone for inciding COVER diaphragms enters the light of imaging lens module, there are some light because eyeglass is anti-in this part light
The effect of penetrating is not utilized, and the light requirement of lens reflecting is completely absorbed, and veiling glare is not caused, while requiring lens reflecting
Light can not be by backtracking, it is to avoid cause dazzle and ghost.Particularly backlight or during the reversible-light shooting of side, multiple reflectings surface will phase
Mutually interference forms halation, and halation can make picture color dim or solar flare occurs.In view of this, with high-selenium corn and low reflection
Thin film study is the developing direction of the COVER diaphragms of imaging lens.
Utility model content
The purpose of this utility model, which is to provide for one kind, has high-selenium corn and low reflecting properties, is effectively reduced imaging dizzy
The Metal absorption type COVER diaphragms of the problem of light and ghost.
The technical solution of the utility model is：
A kind of Metal absorption type COVER diaphragms, including：Substrate；And be arranged on substrate surface metal-dielectric it is thin
Film, and the shading region of the region composition COVER diaphragms of metal-dielectric film covering, the metal-dielectric film are included by base
Interior dielectric film, metallic film and outer dielectric film that plate surface is sequentially distributed outward, the metallic film is metal chromium thin film,
The interior dielectric film and outer dielectric film are alternately stacked and formed successively by chromium oxide film with silicon oxide film.
Metal chromium thin film has relatively low transmitance in visible region, but also has higher surface reflectivity simultaneously（Instead
Rate is penetrated in 40%-60%）.This programme utilizes the absorption characteristic of metal chromium thin film and chromium oxide film, while utilizing interior dielectric film
Antireflective effect and the light of crome metal film reflector with outer dielectric film carry out interference cancellation, solve the surface of metal chromium thin film
The problem of luminance factor is higher, making the shading region of COVER diaphragms has high-selenium corn and low reflection（It is low anti-）Performance, from
And effectively reduce the problem of being imaged dazzle and ghost.On the other hand, chromium oxide film can also be by crome metal in vacuum evaporation
During ion gun aoxidized, can need not so introduce new material, it is simple and convenient to be made technique, is easy to continuous batch
Production.
Preferably, also including the first antireflective coating for being arranged on substrate surface, the region structure of the first antireflective coating covering
Into the transparent zone of COVER diaphragms.
This programme has antireflective effect using antireflective coating in visible ray, to realize that the transparent zone of COVER diaphragms has
High low anti-performance thoroughly, the problem of further reducing imaging dazzle and ghost.
Preferably, metal-dielectric film is in a ring, edge of the metal-dielectric film along the first antireflective coating is looped around
The outside of first antireflective coating, and metal-dielectric film is closely connected with the first antireflective coating.
Preferably, the surface of metal-dielectric film is additionally provided with the second antireflective coating, the second antireflective coating is located at substrate
The opposite sides of metal-dielectric film.Second antireflective coating of this programme can be interfered with the light of crome metal film reflector
Cancellation, further improving the shading region of COVER diaphragms has high-selenium corn and low reflection（It is low anti-）Performance.
Preferably, the thickness of metal chromium thin film is 100-200nm.
Preferably, the first antireflective coating by high refractive index layer with and low-index layer be alternately stacked and form, the high folding
The material for penetrating rate layer is Ti3O5Or TiO2Or Ta3O5Or ZrO2Or Nb2O5, the material of the low-index layer is SiO2 。
Preferably, the second antireflective coating by high refractive index layer with and low-index layer be alternately stacked and form, the high folding
The material for penetrating rate layer is Ti3O5Or TiO2Or Ta3O5Or ZrO2Or Nb2O5, the material of the low-index layer is SiO2 。
Preferably, the material of substrate is glass, sapphire, PMMA or PC.
The beneficial effects of the utility model are：Realize Metal absorption type COVER diaphragms high thoroughly low anti-in transparent zone, hide
Light area is low anti-, the problem of effectively reducing imaging dazzle and ghost.
Brief description of the drawings
Fig. 1 is a kind of structural representation of Metal absorption type COVER diaphragms of the present utility model.
Fig. 2 is the actual measurement optical transmission spectra curve of Metal absorption type COVER diaphragms of the present utility model.
Fig. 3 is the actual measurement reflectance spectrum curve of Metal absorption type COVER diaphragms of the present utility model.
In figure：Substrate 1；Metal-dielectric film 2, interior dielectric film 2.1, metallic film 2.2 and outer dielectric film 2.3；The
Two antireflective coatings 3；First antireflective coating 4.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of Metal absorption type COVER diaphragms, including：Substrate 1；Be arranged on the metal of substrate surface-
Dielectric film 2；And it is arranged on the first antireflective coating 4 of substrate surface.Metal-dielectric film and the first antireflective coating are located at base
The same side of plate.The region of metal-dielectric film covering constitutes the shading region of COVER diaphragms.The covering of first antireflective coating
Region constitutes the transparent zone of COVER diaphragms.
Metal-dielectric film is in a ring.Edge of the metal-dielectric film along the first antireflective coating is looped around the first antireflective
The outside of film, and metal-dielectric film is closely connected with the first antireflective coating.The surface of metal-dielectric film is additionally provided with second
Antireflective coating 3, the second antireflective coating is located at the opposite sides of metal-dielectric film with substrate.
The material of substrate is glass, sapphire, PMMA or PC.
Metal-dielectric film include be sequentially distributed outward by substrate surface interior dielectric film 2.1, metallic film 2.2 with
Outer dielectric film 2.3.Metallic film is metal chromium thin film.Metal chromium thin film is one layer.The thickness of metal chromium thin film is 100-
200nm, the thickness of the metal chromium thin film of the present embodiment is 150nm.Interior dielectric film and outer dielectric film are by chromium oxide film
It is alternately stacked and forms successively with silicon oxide film.The chromium oxide film of interior dielectric film and silicon oxide film are 5 layers.Outer medium
The chromium oxide film of film and silicon oxide film are 5 layers.
First antireflective coating by high refractive index layer with and low-index layer be alternately stacked and form.The material of high refractive index layer is
Ti3O5Or TiO2Or Ta3O5Or ZrO2Or Nb2O5.The material of low-index layer is SiO2 。
Second antireflective coating by high refractive index layer with and low-index layer be alternately stacked and form.The material of high refractive index layer is
Ti3O5Or TiO2Or Ta3O5Or ZrO2Or Nb2O5.The material of low-index layer is SiO2 。
As shown in Fig. 2 using Shimadzu UV1800 measure respectively COVER diaphragms transparent zone and shading region transmitance T (under
T1 and T2 in text refers to transmitance), wherein in visible region（400-700nm）：
Transparent zone T1 minimum transmitance is 92.6%, and maximum transmission is 94.7%, and mean transmissivity is 94.3%；
The transmitance T2 maximum transmissions 0.035% of shading region, mean transmissivity is 0.018%.As can be seen here, COVER windows
Mouth piece fully meets transparent zone height thoroughly, shading region high-selenium corn characteristic.
As shown in figure 3, measuring transparent zone and the shading region reflectivity of COVER diaphragms respectively using Olympus reflectometer
R (R1, R2 and R3 hereinafter refers to reflectivity), wherein in visible region（430-670nm）：
Transparent zone R1 minimum reflectance is 0.134%, and maximum reflectivity is 0.40%, and average reflectance is 0.255%；
Shading region air surface R2（Shading region air surface refers to shading region and the surface of air contact）Minimum reflectance be
0.082%, maximum reflectivity is 0.887%, and average reflectance is 0.416%；
Shading region glass surface R3（Shading region glass surface refers to shading region and the surface of glass contact）Minimum reflectance be
0.27%, maximum reflectivity is 1.273%, and average reflectance is 0.678%.As can be seen here, COVER diaphragms fully meet thang-kng
Area and shading region antireflection characteristic.
It is described above, be only the utility model better embodiment, it is every according to the technical solution of the utility model to
On embodiment where any subtle modifications, equivalent variations and modifications, belong to the scope of technical solutions of the utility model
It is interior.
Claims (8)
1. a kind of Metal absorption type COVER diaphragms, it is characterized in that, including：
Substrate；And
The metal-dielectric film of substrate surface is arranged on, and the region of metal-dielectric film covering constitutes COVER diaphragms
Shading region,
The metal-dielectric film includes the interior dielectric film, metallic film and outer medium being sequentially distributed outward by substrate surface
Film, the metallic film is metal chromium thin film, and the interior dielectric film and outer dielectric film are by chromium oxide film and oxidation
Silicon thin film is alternately stacked forms successively.
2. a kind of Metal absorption type COVER diaphragms according to claim 1, it is characterized in that, in addition to it is arranged on substrate
First antireflective coating on surface, the region of the first antireflective coating covering constitutes the transparent zone of COVER diaphragms.
3. a kind of Metal absorption type COVER diaphragms according to claim 2, it is characterized in that, the metal-dielectric film
In a ring, edge of the metal-dielectric film along the first antireflective coating is looped around the outside of the first antireflective coating, and metal-dielectric
Film is closely connected with the first antireflective coating.
4. a kind of Metal absorption type COVER diaphragms according to claim 1 or 2 or 3, it is characterized in that, metal-Jie
The surface of matter film is additionally provided with the second antireflective coating, and the second antireflective coating is located at the opposite sides of metal-dielectric film with substrate.
5. a kind of Metal absorption type COVER diaphragms according to claim 1 or 2 or 3, it is characterized in that, the crome metal
The thickness of film is 100-200nm.
6. a kind of Metal absorption type COVER diaphragms according to Claims 2 or 3, it is characterized in that, first antireflective
Film by high refractive index layer with and low-index layer be alternately stacked and form, the material of the high refractive index layer is Ti3O5Or TiO2Or
Ta3O5Or ZrO2Or Nb2O5, the material of the low-index layer is SiO2 。
7. a kind of Metal absorption type COVER diaphragms according to claim 4, it is characterized in that, second antireflective coating
By high refractive index layer with and low-index layer be alternately stacked and form, the material of the high refractive index layer is Ti3O5Or TiO2Or Ta3O5
Or ZrO2Or Nb2O5, the material of the low-index layer is SiO2 。
8. a kind of Metal absorption type COVER diaphragms according to claim 1 or 2 or 3, it is characterized in that, the substrate
Material is glass, sapphire, PMMA or PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720147281.2U CN206557417U (en) | 2017-02-17 | 2017-02-17 | A kind of Metal absorption type COVER diaphragms |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720147281.2U CN206557417U (en) | 2017-02-17 | 2017-02-17 | A kind of Metal absorption type COVER diaphragms |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515743A (en) * | 2018-05-09 | 2018-09-11 | 同济大学 | A kind of medium/metal ultra wide band absorbing membrane and preparation method thereof |
| CN110174716A (en) * | 2019-06-27 | 2019-08-27 | 浙江舜宇光学有限公司 | Optical element and optical lens |
| CN111427104A (en) * | 2019-01-10 | 2020-07-17 | 华润微电子（重庆）有限公司 | Optical component and manufacturing method thereof |
| CN113050205A (en) * | 2019-12-27 | 2021-06-29 | 比亚迪股份有限公司 | Black material and preparation method and application thereof |
| CN117465081A (en) * | 2023-10-12 | 2024-01-30 | 广东工业大学 | High-absorbance composite membrane and application thereof in laser-induced transfer |
-
2017
- 2017-02-17 CN CN201720147281.2U patent/CN206557417U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515743A (en) * | 2018-05-09 | 2018-09-11 | 同济大学 | A kind of medium/metal ultra wide band absorbing membrane and preparation method thereof |
| CN111427104A (en) * | 2019-01-10 | 2020-07-17 | 华润微电子（重庆）有限公司 | Optical component and manufacturing method thereof |
| CN111427104B (en) * | 2019-01-10 | 2022-09-27 | 华润微电子（重庆）有限公司 | Optical component and manufacturing method thereof |
| CN110174716A (en) * | 2019-06-27 | 2019-08-27 | 浙江舜宇光学有限公司 | Optical element and optical lens |
| CN113050205A (en) * | 2019-12-27 | 2021-06-29 | 比亚迪股份有限公司 | Black material and preparation method and application thereof |
| CN113050205B (en) * | 2019-12-27 | 2021-09-21 | 比亚迪股份有限公司 | Black material and preparation method and application thereof |
| CN117465081A (en) * | 2023-10-12 | 2024-01-30 | 广东工业大学 | High-absorbance composite membrane and application thereof in laser-induced transfer |
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