CN105739063A - Cell phone imaging lens - Google Patents
Cell phone imaging lens Download PDFInfo
- Publication number
- CN105739063A CN105739063A CN201610229219.8A CN201610229219A CN105739063A CN 105739063 A CN105739063 A CN 105739063A CN 201610229219 A CN201610229219 A CN 201610229219A CN 105739063 A CN105739063 A CN 105739063A
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- Prior art keywords
- lens
- mobile phone
- imaging lens
- phone imaging
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0035—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having three lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/22—Telecentric objectives or lens systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a cell phone imaging lens which comprises a lens barrel (100), and a first lens (1), a diaphragm (2), first shading paper (3), a second lens (4), second shading paper (5), a third lens (6) and a spacer (7) are sequentially arranged in the lens barrel (100) from the object side to the image side, wherein the first lens (1) is a plastic non-spherical lens with a positive focal length, the side of the first lens (1) facing the object side is convex, the second lens (4) is a falcate plastic non-spherical lens with a positive focal length the side of the second lens (4) facing the object side is concave, the side of the second lens (4) facing the image side is convex, the third lens (6) is a plastic non-spherical lens with a negative focal length, the side of the third lens (6) facing the object side is convex, and the side of the third lens (6) facing the image side is concave. The cell phone imaging lens is simple in structure, large in visual angle field, and high in image quality.
Description
[technical field]
The present invention relates to a kind of mobile phone imaging lens.
[background technology]
Under the promotion of science and technology, the integrated level of sensor devices is greatly improved so that it is size reduces.These undersized photo-sensitive cells, are applied on smart mobile phone or computer by substantial amounts of.Mobile phone has had camera function, and computer has had video capability.The being convenient for carrying property of mobile phone makes people that the performance of taking pictures of mobile phone to be received much concern, and therefore, performance Cheng Liao consumers of taking pictures select the overriding concern factor of mobile phone.People's great attention to cultural life, has started the keen competition of optical design industry so that mobile lens is constantly towards miniaturization, and high pixel, the direction of the big angle of visual field is developed.
The following shortcoming of mobile lens ubiquity on the market at present: on market, the mobile phone of main flow generally arranges 3 pieces of eyeglasses from thing side to image side, first piece of eyeglass is plus lens, second piece of eyeglass is minus lens, 3rd piece of eyeglass is plus lens, adopt the frame mode of positive negative and positive, the angle of visual field is made to focus mostly near 70 °, the angle of visual field is less, therefore in viewfinder range, need longer shooting distance just can find a view completely, but shooting distance is remote, the quality of picture element will inevitably reduce, thus sacrificing picture element.
Therefore, the present invention is precisely in order to overcome above shortcoming and produce.
[summary of the invention]
The present invention seeks to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, the angle of visual field is big, the mobile phone imaging lens that picture element is high.This mobile phone imaging lens angle of visual field can reach 84 °, and mobile lens overall length can foreshorten to 2.88mm, and pixel reaches 5,000,000.
The present invention is achieved by the following technical solutions:
A kind of mobile phone imaging lens, it is characterized in that: include lens barrel 100, it is sequentially provided with the first lens 1, diaphragm the 2, first light-shielding sheet the 3, second lens the 4, second light-shielding sheet the 5, the 3rd lens 6 and spacer ring 7 from thing side to image side in described lens barrel 100, the first described lens 1 are focal lengths is positive plastic aspheric lenes, and the first described lens 1 are convex surface towards the one side of thing side；The second described lens 4 are focal lengths is positive falcate plastic aspheric lenes, and the second described lens 4 towards the one side of thing side be concave surface, one side towards image side be convex surface；The 3rd described lens 6 are focal lengths is negative plastic aspheric lenes, and the 3rd described lens 6 towards the one side of thing side be convex surface, one side towards image side be concave surface.
Mobile phone imaging lens as above, it is characterised in that: the focal length F1 of the first described lens 1 and total focal length F of mobile phone imaging lens meets following formula: 0.8 < F1/F < 1.3.
Mobile phone imaging lens as above, it is characterised in that: the focal length F3 of the 3rd described the lens 6 and total focal length F of mobile phone imaging lens meets following formula: 2 < F3/F < 4.
Mobile phone imaging lens as above, it is characterised in that: the second described lens 4 meet following formula towards the radius of curvature R 4 of the one side of image side with the total focal length F of mobile phone imaging lens: 0.3 < | R4/F | < 0.7.
Mobile phone imaging lens as above, it is characterised in that: the catercorner length 2Y of the image planes 200 of described mobile phone imaging lens and mobile phone imaging lens overall length L meets following formula: L/2Y < 0.6.
Mobile phone imaging lens as above, it is characterised in that: the 3rd described lens 6 are towards the aspheric surface that centre of surface part is negative power of side, image side, and closer to edge, negative power is more little.
Mobile phone imaging lens as above, it is characterised in that: the 3rd described lens 6 side is additionally provided with optical filter 300.
Mobile phone imaging lens as above, it is characterised in that: the image planes 200 of described mobile phone imaging lens be sized to 2.9mm*2.1mm, its catercorner length is 3.6mm.
Compared with prior art, the present invention has the following advantages:
1, the angle of visual field of the present invention can reach 84 °, and overall length shortens to 2.88mm, it is achieved ultra-wide angle, ultra-thin characteristic.
2, first lens once arranged of the present invention, the second lens and the 3rd lens arrangement are respectively adopted plus lens, plus lens and minus lens, form just positive and negative structure.First lens, the second lens and the 3rd lens all use plastic cement aspherical lens, adopt precise injection molding technique to obtain, and are conducive to reducing external dimensions and the weight of mobile phone imaging lens, have saved cost.
3, the 3rd lens of the present invention are towards the aspheric surface that centre of surface part is negative power of side, image side, and closer to edge, negative power is more little, and this structure can ensure that light arrives the telecentricity character of image planes.
[accompanying drawing explanation]
Fig. 1 is sectional view of the present invention；
Fig. 2 is index path of the present invention；
Fig. 3 is the transfer curve figure of the present invention；
Fig. 4 is the curvature of field and the distortion curve figure of the present invention；
Fig. 5 is the horizontal color curve of the present invention.
[detailed description of the invention]
Below in conjunction with accompanying drawing, the invention will be further described:
A kind of mobile phone imaging lens, including lens barrel 100, it is sequentially provided with the first lens 1, diaphragm the 2, first light-shielding sheet the 3, second lens the 4, second light-shielding sheet the 5, the 3rd lens 6 and spacer ring 7 from thing side to image side in described lens barrel 100, the first described lens 1 are focal lengths is positive plastic aspheric lenes, and the first described lens 1 are convex surface towards the one side of thing side；The second described lens 4 are focal lengths is positive falcate plastic aspheric lenes, and the second described lens 4 towards the one side of thing side be concave surface, one side towards image side be convex surface；The 3rd described lens 6 are focal lengths is negative plastic aspheric lenes, and the 3rd described lens 6 towards the one side of thing side be convex surface, one side towards image side be concave surface.Mobile phone imaging lens adopts said structure, becomes telecentric system, and size is reduced, and ensure that the angle of visual field of optical system is big simultaneously, makes various aberration all be corrected.First lens 1 and the second lens 4 are positive power lens, the generation of restriction spherical aberration and coma.Further, the first lens 1 are convex surface towards the one side of thing side, the second lens 4 towards the one side of thing side be concave surface, one side towards image side be convex surface, this structure can correct paraxonic aberration and distortion easily, improves image quality.3rd lens 6 towards the one side of thing side be convex surface, one side towards image side be concave surface, this structure can shorten mobile phone imaging lens overall length, and aberration can also be corrected.First described lens the 1, second lens 4 and the 3rd lens 6 all adopt plastic cement material APEL5514.
The focal length F1 of the first described lens 1 and total focal length F of mobile phone imaging lens meets following formula: 0.8 < F1/F < 1.3.This formula is for adjusting the focal power of the first lens 1.When ratio is higher than lower limit 0.8 with during lower than higher limit 1.3, it is ensured that the first lens 1 have a rational focal power, it is possible to limit high-order spherical aberration and coma that the first lens 1 produce, thus improving the image quality of whole mobile phone imaging lens.
The focal length F3 of the 3rd described the lens 6 and total focal length F of mobile phone imaging lens meets following formula: 2 < F3/F < 4.This formula is used for adjusting the focal power of the 3rd lens 6.When ratio is more than lower limit 2 with lower than higher limit 4, the negative power of the 3rd lens 6 can be ensured fully, the overall length of whole mobile phone imaging lens can be reduced, off-axis aberration (curvature of field and distortion) can also be corrected, and the luminous flux at arrival image planes 200 edge can be made to increase sharply suddenly, ensure telecentricity characteristic during light beam arrival image planes, improve the picture element of mobile phone imaging lens.
The second described lens 4 meet following formula towards the radius of curvature R 4 of the one side of image side with the total focal length F of mobile phone imaging lens: 0.3 < | R4/F | < 0.7.When ratio is more than lower limit 0.3 with less than higher limit 0.7, mobile phone imaging lens optical system can limit the coma of Off-axis-light and the off-axis of lens barrel 100.It is not too big for being additionally, since the second lens 4 towards the curvature of the one side of image side, and the course of processing making the second lens 4 is also more convenient.When ratio is lower than higher limit 0.7, can fully keep the second lens 4 towards the curvature focal power on the surface of side, image side, additionally, the various off-axis aberrations that the negative power of the 3rd lens 6 causes can also be made to be corrected, the more important thing is, can be easy to ensure the telecentricity character of image planes 200 to improve the picture element of whole mobile phone imaging lens optical system.
The catercorner length 2Y of the image planes 200 of described mobile phone imaging lens and mobile phone imaging lens overall length L meets following formula: L/2Y < 0.6.Meeting above formula, then the overall length of mobile phone imaging lens can be reduced, size and the weight of mobile phone imaging lens are reduced, and more compact structure takes up room little.
The 3rd described lens 6 are towards the aspheric surface that centre of surface part is negative power of side, image side, and closer to edge, negative power is more little.
The 3rd described lens 6 side is additionally provided with optical filter 300.
The mobile phone imaging lens angle of visual field of the present invention is up to 84 °, and camera lens overall length foreshortens to 2.88mm, and pixel reaches 5,000,000 pixels, it is achieved ultra-wide angle, ultra thin handset camera lens.This mobile phone imaging lens collocation OV5670CSP 1/5th chip, pixel size is 1.12um*1.12um, and effective imaging region is 2592*1944.Image planes be sized to 2.9mm*2.1mm, its catercorner length is 3.6mm.Fig. 3 to Fig. 5 is the optical performance curve of this practicality new cell-phone imaging lens, from curve it can be seen that mobile phone imaging lens excellent optical performance of the present invention.
Table 1 to table 4 is the design parameter of mobile phone imaging lens of the present invention:
Table 1 is the structural parameters table of mobile phone imaging lens of the present invention
Table 2 is three lens front and rear surfaces normalization radius R values
Table 3 be the first lens 1 and the second lens 4 each aspheric surface rise respectively with the ratio range of its radius R
Table 4 is the ratio range of the 3rd each aspheric surface rise of lens 6 and radius R
Claims (8)
1. a mobile phone imaging lens, it is characterized in that: include lens barrel (100), it is sequentially provided with the first lens (1), diaphragm (2), the first light-shielding sheet (3), the second lens (4), the second light-shielding sheet (5), the 3rd lens (6) and spacer ring (7) from thing side to image side in described lens barrel (100), described the first lens (1) are focal lengths is positive plastic aspheric lenes, and described the first lens (1) are convex surface towards the one side of thing side；Described the second lens (4) are focal lengths is positive falcate plastic aspheric lenes, and described the second lens (4) towards the one side of thing side be concave surface, one side towards image side be convex surface；The 3rd described lens (6) are focal lengths is negative plastic aspheric lenes, and the 3rd described lens (6) towards the one side of thing side be convex surface, one side towards image side be concave surface.
2. mobile phone imaging lens according to claim 1, it is characterised in that: the focal length F1 of described the first lens (1) and the total focal length F of mobile phone imaging lens meets following formula: 0.8 < F1/F < 1.3.
3. mobile phone imaging lens according to claim 1 and 2, it is characterised in that: the focal length F3 and the total focal length F of mobile phone imaging lens of the 3rd described lens (6) meet following formula: 2 < F3/F < 4.
4. mobile phone imaging lens according to claim 1 and 2, it is characterised in that: described the second lens (4) meet following formula towards the radius of curvature R 4 of the one side of image side with the total focal length F of mobile phone imaging lens: 0.3 < | R4/F | < 0.7.
5. mobile phone imaging lens according to claim 1 and 2, it is characterised in that: the catercorner length 2Y and mobile phone imaging lens overall length L of the image planes (200) of described mobile phone imaging lens meet following formula: L/2Y < 0.6.
6. mobile phone imaging lens according to claim 1 and 2, it is characterised in that: the 3rd described lens (6) are towards the aspheric surface that centre of surface part is negative power of side, image side, and closer to edge, negative power is more little.
7. mobile phone imaging lens according to claim 1 and 2, it is characterised in that: the 3rd described lens (6) side is additionally provided with optical filter (300).
8. mobile phone imaging lens according to claim 1, it is characterised in that: the image planes (200) of described mobile phone imaging lens be sized to 2.9mm*2.1mm, its catercorner length is 3.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229219.8A CN105739063A (en) | 2016-04-13 | 2016-04-13 | Cell phone imaging lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610229219.8A CN105739063A (en) | 2016-04-13 | 2016-04-13 | Cell phone imaging lens |
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| Publication Number | Publication Date |
|---|---|
| CN105739063A true CN105739063A (en) | 2016-07-06 |
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ID=56254197
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610229219.8A Pending CN105739063A (en) | 2016-04-13 | 2016-04-13 | Cell phone imaging lens |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114942510A (en) * | 2022-02-11 | 2022-08-26 | 深圳市都乐精密制造有限公司 | Ultra-thin wide angle robot lens of sweeping floor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512197A (en) * | 2002-12-27 | 2004-07-14 | 日本电产科宝株式会社 | Shooting lens |
| JP2004226487A (en) * | 2003-01-20 | 2004-08-12 | Seiko Epson Corp | Imaging lens |
| CN201383031Y (en) * | 2008-12-17 | 2010-01-13 | 富士能株式会社 | Cameral lens and camera device in three-set structure |
| CN201926809U (en) * | 2010-12-17 | 2011-08-10 | 凤凰光学(上海)有限公司 | High pixel taking lens |
| WO2012035708A1 (en) * | 2010-09-17 | 2012-03-22 | コニカミノルタオプト株式会社 | Imaging lens |
-
2016
- 2016-04-13 CN CN201610229219.8A patent/CN105739063A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512197A (en) * | 2002-12-27 | 2004-07-14 | 日本电产科宝株式会社 | Shooting lens |
| JP2004226487A (en) * | 2003-01-20 | 2004-08-12 | Seiko Epson Corp | Imaging lens |
| CN201383031Y (en) * | 2008-12-17 | 2010-01-13 | 富士能株式会社 | Cameral lens and camera device in three-set structure |
| WO2012035708A1 (en) * | 2010-09-17 | 2012-03-22 | コニカミノルタオプト株式会社 | Imaging lens |
| CN201926809U (en) * | 2010-12-17 | 2011-08-10 | 凤凰光学(上海)有限公司 | High pixel taking lens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114942510A (en) * | 2022-02-11 | 2022-08-26 | 深圳市都乐精密制造有限公司 | Ultra-thin wide angle robot lens of sweeping floor |
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Application publication date: 20160706 |