CN102998724B - Eyeglass and there is the camera lens module of this eyeglass - Google Patents
Eyeglass and there is the camera lens module of this eyeglass Download PDFInfo
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- CN102998724B CN102998724B CN201110268969.3A CN201110268969A CN102998724B CN 102998724 B CN102998724 B CN 102998724B CN 201110268969 A CN201110268969 A CN 201110268969A CN 102998724 B CN102998724 B CN 102998724B
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- film
- eyeglass
- reflective film
- optics portion
- camera lens
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Abstract
A kind of eyeglass, it comprises optics portion and the non-optical division around this optics portion. This optics portion is used for allowing light penetration to realize optical imagery, and this optics portion has relative first surface and second surface. The curvature of this first surface is greater than zero, and this first surface deposits anti-reflective film. The reflectivity of this anti-reflective film in the wave-length coverage of 400nm-850nm is less than 2%. This optics portion is less than 2% in the wave-length coverage internal reflection rate of 420nm-650nm. By adopting above-mentioned anti-reflective film, this lens optical portion is less than 2% in the wave-length coverage internal reflection rate of 420nm-650nm, thereby reduces the dazzle of the camera lens module with this eyeglass, and then promotes the image quality of camera lens module. In addition, the invention still further relates to a kind of camera lens module with above-mentioned eyeglass.
Description
Technical field
The present invention relates to a kind of eyeglass and camera lens module, relate in particular to a kind of camera lens module that there is the eyeglass of anti-reflective film and there is this eyeglass.
Background technology
In order to reduce the generation of dazzle, generally can be at lens surface deposition anti-reflective film. The reflectance spectrum curve of existing a kind of anti-reflective film as shown in Figure 6.
The surface of lens optical portion is generally curved surface, for example sphere or aspheric surface. In the time that anti-reflective film is deposited on the eyeglass that surface is curved surface, the reflectance spectrum curve of the central area of lens optical portion and fringe region usually can be different, and the reflectance spectrum curve of general fringe region can be offset to shortwave, as shown in Figure 7. In Fig. 7, solid line represents the reflectance spectrum curve of central area, and dotted line represents the reflectance spectrum curve of fringe region. As can be seen from Figure 7, the reflectivity that fringe region is greater than the light of 450nm for wavelength is greater than 5%. Can cause like this anti-reflection effect variation of eyeglass, thereby can produce more serious dazzle in camera lens inside, and then affect the image quality of camera lens.
Summary of the invention
In view of this, be necessary to provide the good eyeglass of a kind of anti-reflection effect and camera lens module.
A kind of eyeglass, it comprises optics portion and the non-optical division around this optics portion. This optics portion is used for allowing light penetration to realize optical imagery, and this optics portion has relative first surface and second surface. The curvature of this first surface is greater than zero, and this first surface deposits anti-reflective film. The reflectivity of this anti-reflective film in the wave-length coverage of 400nm-850nm is less than 2%. This optics portion is less than 2% in the wave-length coverage internal reflection rate of 420nm-650nm.
A kind of camera lens module, it comprises lens barrel and above-mentioned eyeglass, this eyeglass is housed in this lens barrel.
By adopting above-mentioned anti-reflective film, this lens optical portion is less than 2% in the wave-length coverage internal reflection rate of 420nm-650nm, thereby reduces the dazzle of the camera lens module with this eyeglass, and then promotes the image quality of camera lens module.
Brief description of the drawings
Fig. 1 is the generalized section of the eyeglass of first embodiment of the invention.
Fig. 2 is the reflectance spectrum curve of the anti-reflective film of Fig. 1.
Fig. 3 is the reflectance spectrum curve of the eyeglass of Fig. 1.
Fig. 4 is the generalized section of the camera lens module of second embodiment of the invention.
Fig. 5 is the reflectance spectrum curve of the anti-reflective film of the 3rd embodiment.
Fig. 6 is the reflectance spectrum curve of existing a kind of anti-reflective film.
Fig. 7 is the reflectance spectrum curve of existing a kind of eyeglass.
Main element symbol description
| Eyeglass | 10 |
| Optics portion | 12 |
| Non-optical division | 14 |
| Anti-reflective film | 16 |
| First surface | 121 |
| Second surface | 122 |
| Central area | 123 |
| Fringe region | 124 |
| The 3rd surface | 141 |
| The 4th surface | 142 |
| Camera lens module | 20 |
| Lens barrel | 22 |
| Receiving space | 222 |
Following detailed description of the invention further illustrates the present invention in connection with above-mentioned accompanying drawing.
Detailed description of the invention
Below in conjunction with drawings and the embodiments, the present invention is described in further detail.
Refer to Fig. 1, the eyeglass 10 of first embodiment of the invention comprises optics portion 12, around the non-optical division 14 of this optics portion 12 and be formed on the anti-reflective film 16 on optics portion 12 surfaces. This optics portion 12 is for allowing light penetration to realize optical imagery. Optics portion 12 comprises relative first surface 121 and second surface 122, and non-optical division 14 comprises relative the 3rd surface 141 and the 4th surface 142, and first surface 121 is connected with the 3rd surface 141, and the 3rd surface 141 is connected with the 4th surface 142. In the present embodiment, eyeglass 10 is convex lens. First surface 121 and second surface 122 are aspheric surface, and the curvature of first surface 121 and second surface 122 is all greater than zero. The 3rd surface 141 and the 4th surface 142 are plane. First to fourth surperficial 121-122,141-142 all deposits anti-reflective film 16.
Anti-reflective film 16 is alternately formed by stacking by the film of high-index material and the film of low-index material. In the present embodiment, anti-reflective film 16 is stacked gradually and is formed by 8 layer films, and high-index material is titanium dioxide, and low-index material is silica. The concrete structure of anti-reflective film 16 is as shown in table 1, and wherein, the first film directly forms first to fourth surperficial 121-122,141-142.
Table 1
| Film | Material | Thickness (nanometer) |
| The first film | Titanium dioxide | 8.84 |
| The second film | Silica | 46.07 |
| The 3rd film | Titanium dioxide | 27.57 |
| The 4th film | Silica | 20.39 |
| The 5th film | Titanium dioxide | 75.34 |
| The 6th film | Silica | 13.68 |
| The 7th film | Titanium dioxide | 29.06 |
| The 8th film | Silica | 100.33 |
The reflectance spectrum curve of anti-reflective film 16 as shown in Figure 2. As seen from Figure 2, the reflectivity of this anti-reflective film 16 in the wave-length coverage of 400nm-850nm is less than 2%. As shown in Figure 3, wherein, solid line represents the reflectance spectrum curve of central area 123 for the central area 123 of optics portion 12 and the reflectance spectrum curve of fringe region 124, and dotted line represents the reflectance spectrum curve of fringe region 124. As can be seen from Figure 3, the reflectance spectrum curve of central area 123 and fringe region 124 is less than 2% in the wave-length coverage internal reflection rate of 420nm-650nm. For general camera, wave-length coverage just participates in imaging at the light of 420nm-650nm, and the light of all the other wave bands is all filtered by optical filter substantially. Therefore eyeglass 10 has good anti-reflection effect, can reduce the dazzle of camera lens module.
Be appreciated that high low-index material and refractive index thereof can select with reference to following material: magnesium fluoride (1.38), thorium fluoride (1.47), ice crystal (1.35), silica (1.47), aluminium oxide (1.63), hafnium oxide (1.85), tantalum pentoxide (2.2), niobium oxide (2.19), zinc sulphide (2.27), titanium dioxide (2.41), silicon (3.5), germanium (4.0) and lead telluride (5.0).
Be appreciated that anti-reflective film 16 also can only be formed on first surface 121 or only be formed on first surface 121 and the 3rd surface 141.
Refer to Fig. 4, the camera lens module 20 of second embodiment of the invention comprises lens barrel 22 and eyeglass 10. It is cylindric that lens barrel 22 is substantially, and inside offers receiving space 222, and eyeglass 10 is housed in the receiving space 222 of lens barrel 22. Camera lens module 20, owing to having adopted above-mentioned eyeglass 10, can reduce dazzle.
For first surface 121, eyeglass 10 that second surface 122 curvature are larger, can adopt more wide band anti-reflective film 16, be less than 2% with the reflectance spectrum curve that makes central area 123 and fringe region 124 in the wave-length coverage internal reflection rate of 420nm-650nm. For example, the anti-reflective film 16 of third embodiment of the invention as shown in table 2, wherein, the first film is formed directly into first to fourth surperficial 121-122,141-142.
Table 2
| Film | Material | Thickness (nanometer) |
| The first film | Titanium dioxide | 13.80 |
| The second film | Silica | 43.70 |
| The 3rd film | Titanium dioxide | 37.65 |
| The 4th film | Silica | 15.97 |
| The 5th film | Titanium dioxide | 90.79 |
| The 6th film | Silica | 18.81 |
| The 7th film | Titanium dioxide | 30.13 |
| The 8th film | Silica | 109.95 |
The reflectance spectrum curve of the anti-reflective film 16 of table 2 as shown in Figure 5. As seen from Figure 5, the reflectivity of this anti-reflective film 16 in the wave-length coverage of 400nm-1000nm is less than 2%.
In addition, those skilled in the art can also do other and change in spirit of the present invention, and certainly, the variation that these do according to spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (8)
1. an eyeglass, this eyeglass comprises optics portion and the non-optical division around this optics portion, this optics portion is for permittingPermitted light penetration to realize optical imagery, this optics portion has relative first surface and second surface, and this is the years oldThe curvature on one surface is greater than zero, and this first surface deposits anti-reflective film, and this anti-reflective film comprises heavy successivelyAmass the first to the 8th film at this first surface, the described first to the 8th film is respectively: with titanium dioxideFor the thickness of the material the first film that is 8.84nm, the thickness taking silica as material are second of 46.07nmFilm, thickness taking titanium dioxide as material are the 3rd film of 27.57nm, the film taking silica as materialThick the 4th film for 20.39nm, the thickness taking titanium dioxide as material as the 5th film of 75.34nm, withSilica is the thickness of material the 6th film that is 13.68nm, thickness taking titanium dioxide as material asThe 7th film of 29.06nm and the thickness taking silica as material are the 8th film of 100.33nm, its spyLevy and be, the reflectivity of this anti-reflective film in the wave-length coverage of 400nm-850nm is less than 2%, this optics portionWave-length coverage internal reflection rate at 420nm-650nm is less than 2%.
2. eyeglass as claimed in claim 1, is characterized in that, this anti-reflective film is at the wavelength of 400nm-1000nmReflectivity in scope is less than 2%.
3. eyeglass as claimed in claim 1, is characterized in that, this anti-reflective film by the film of high-index material andThe film of low-index material is alternately formed by stacking.
4. eyeglass as claimed in claim 1, is characterized in that, this first surface is aspheric surface.
5. eyeglass as claimed in claim 1, is characterized in that, this second surface further deposits this anti-reflective film.
6. eyeglass as claimed in claim 1, is characterized in that, this non-optical division comprises relative the 3rd surface and theFour surfaces, the 3rd surface is connected with this first surface, and the 4th surface is connected with this second surface,The 3rd surface further deposits this anti-reflective film.
7. eyeglass as claimed in claim 6, is characterized in that, this second surface and further deposition of the 4th surfaceThere is this anti-reflective film.
8. a camera lens module, it comprises the eyeglass described in lens barrel and claim 1-3 any one, this eyeglass is housed inIn this lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110268969.3A CN102998724B (en) | 2011-09-13 | 2011-09-13 | Eyeglass and there is the camera lens module of this eyeglass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110268969.3A CN102998724B (en) | 2011-09-13 | 2011-09-13 | Eyeglass and there is the camera lens module of this eyeglass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102998724A CN102998724A (en) | 2013-03-27 |
| CN102998724B true CN102998724B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110268969.3A Expired - Fee Related CN102998724B (en) | 2011-09-13 | 2011-09-13 | Eyeglass and there is the camera lens module of this eyeglass |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297887A (en) * | 2013-07-17 | 2015-01-21 | 玉晶光电(厦门)有限公司 | Photographic lens and gasket for same |
| CN106814411A (en) * | 2017-02-22 | 2017-06-09 | 深圳市保千里电子有限公司 | A kind of eyeglass of mobile phone full shot, full shot and imaging method |
| CN109502989B (en) * | 2019-01-07 | 2021-08-27 | 蓝思科技股份有限公司 | Curved glass coating device, coating process and coated product |
| CN111856625A (en) * | 2019-04-30 | 2020-10-30 | 三营超精密光电(晋城)有限公司 | Lens module and electronic device with same |
| CN112859279A (en) * | 2021-01-19 | 2021-05-28 | 杭州国翌科技有限公司 | Anti-dazzle lens and track monitoring system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1573361A (en) * | 2003-05-23 | 2005-02-02 | 柯尼卡光学技术株式会社 | Optical lens and optical information recording and reproducing apparatus |
| TWI334960B (en) * | 2004-12-03 | 2010-12-21 | Hon Hai Prec Ind Co Ltd | Lens for digital still camera and method of manufaturing it |
| JP4958594B2 (en) * | 2007-03-22 | 2012-06-20 | 富士フイルム株式会社 | Antireflection film, optical element and optical system |
| JP2009104732A (en) * | 2007-10-25 | 2009-05-14 | Hitachi Maxell Ltd | Optical pickup lens |
| CN101750641A (en) * | 2008-12-15 | 2010-06-23 | 鸿富锦精密工业（深圳）有限公司 | Broadband AR (anti-reflection)-film and optical element with broadband AR-film |
| JP5509691B2 (en) * | 2009-06-26 | 2014-06-04 | 旭硝子株式会社 | Lens and manufacturing method thereof |
| CN201883039U (en) * | 2010-11-19 | 2011-06-29 | 福耀玻璃工业集团股份有限公司 | Automobile sandwich glass with multifunctional film coating |
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- 2011-09-13 CN CN201110268969.3A patent/CN102998724B/en not_active Expired - Fee Related
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| CN102998724A (en) | 2013-03-27 |
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