CN205404938U - Cell -phone imaging lens - Google Patents
Cell -phone imaging lens Download PDFInfo
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- CN205404938U CN205404938U CN201620128273.9U CN201620128273U CN205404938U CN 205404938 U CN205404938 U CN 205404938U CN 201620128273 U CN201620128273 U CN 201620128273U CN 205404938 U CN205404938 U CN 205404938U
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Abstract
The utility model discloses a cell -phone imaging lens, including the lens cone, the lens cone on be equipped with aperture stop, from aperture stop to being equipped with first lens in proper order for instance incline in the lens cone, the second lens, third lens and fourth lens, first lens are the biconvex lens of positive focus, the second lens are the biconcave lens of negative focal length, the third lens are the positive lens, and the third lens are the concave surface towards the surface of thing side, the orientation is the convex surface like the surface of side, the fourth lens are the negative lens, and the fourth lens are the convex surface towards the surface of thing side, the orientation is the concave surface like the surface of side, first lens, the second lens, the surface of third lens and fourth lens is the aspheric surface. The utility model discloses making various aberrations fully proofreaied and correct, realizing the high definition, at the imaging lens who guarantees to obtain a small -size under the great circumstances of the angle of vision, messenger's structure is simpler compact to the feasible removal terminal equipment who carries on it can more approach, the image quality is better.
Description
[technical field]
This utility model relates to a kind of mobile phone imaging lens.
[background technology]
Shooting technology has become as the key that modern smart mobile phone is indispensable, always to replace card camera for target, constantly perfect along with smart mobile phone functionalization, it is also more and more higher to the permeability of mankind's daily life, more people selects with mobile phone photograph, especially, under the 4G trend popularized rapidly, the demand of video calling is also more and more higher.Under the mobile Internet epoch, the day-to-day of the social software such as microblogging, wechat, more young colonial need relies on photographing function of mobile phone, the quality of taking photograph of intelligent mobile phone performance, also becomes consumer and chooses one vital factor during mobile phone.
Along with the arriving in high definition auto heterodyne epoch, for consumer, light, thin mobile phone characteristic has not been obviously unique advantage, and high pixel gradually becomes focus.But general mobile lens optical system, pixel, the eyeglass number of use and camera lens overall length form the relation of restriction mutually, and the angle of visual field of imaging is only small, can not full correction aberration, and, when TTL is reduced, imaging performance can reduce, and is difficult to mate the chip of high pixel.
Therefore, this utility model is based on above deficiency and produces.
[utility model content]
This utility model purpose is to overcome the deficiencies in the prior art, a kind of mobile phone imaging lens is provided, this camera lens is telecentric system, various aberration is made fully to be corrected, realize high definition, when ensure the angle of visual field bigger obtain a undersized imaging lens, make structure more simply compact so that carry its mobile device terminal can thinner, image quality is better.
This utility model is achieved through the following technical solutions:
A kind of mobile phone imaging lens, it is characterized in that: include lens barrel 100, described lens barrel 100 is provided with aperture diaphragm 200, it is sequentially provided with the first lens 1 from aperture diaphragm 200 to image side in described lens barrel 100, second lens 2, 3rd lens 3 and the 4th lens 4, the first described lens 1 are the biconvex lens of positive focal length, the second described lens 2 are the biconcave lens of negative focal length, the 3rd described lens 3 are plus lens, and the 3rd described lens 3 are concave surface towards the surface of thing side, it is convex surface towards the surface of image side, the 4th described lens 4 are minus lens, and the 4th described lens 4 are convex surface towards the surface of thing side, it is concave surface towards the surface of image side, the first described lens 1, second lens 2, the surface of the 3rd lens 3 and the 4th lens 4 is aspheric surface.
Mobile phone imaging lens as above, it is characterized in that: described mobile phone imaging lens meets following formula: L/2Y < 0.9, wherein, L is along optical axis direction, first lens 1 are towards the intersection point of thing side one side surface and optical axis to the distance of image planes 300,2Y is the cornerwise length of image planes 300, and image planes 300 are length-width ratios is the rectangular planes of 4:3.
Mobile phone imaging lens as above, it is characterised in that: described mobile phone imaging lens meets following formula: 0.95 < F12/ F < 1.35, wherein, F is total focal length of mobile phone imaging lens, F12It it is the combined focal length of the first lens 1 and the second lens 2.
Mobile phone imaging lens as above, it is characterised in that: described mobile phone imaging lens meets following formula: 0.2 < F3/ F < 0.6, wherein, F is total focal length of mobile phone imaging lens, F3It it is the focal length of the 3rd lens 3.
Mobile phone imaging lens as above, it is characterised in that: described mobile phone imaging lens meets following formula: 0.15 < F4/ F < 0.55, wherein, F is total focal length of mobile phone imaging lens, F4It it is the focal length of the 4th lens 4.
Mobile phone imaging lens as above, it is characterised in that: described mobile phone imaging lens meets following formula: 0.5 < (R1+R2)/(R1-R2) < 1.5, wherein, R1It is first lens 1 radius of curvature towards thing side one side surface, R2It is first lens 1 radius of curvature towards image side one side surface.
Mobile phone imaging lens as above, it is characterised in that: described mobile phone imaging lens meets following formula: 0.1 < (R3+R4)/(R3-R4) < 1.5, wherein, R3It is second lens 2 radius of curvature towards thing side one side surface, R4It is second lens 2 radius of curvature towards image side one side surface.
Mobile phone imaging lens as above, it is characterised in that: described mobile phone imaging lens meets following formula: 1.0 < (R5+R6)/(R5-R6) < 2.0, wherein, R5It is the 3rd lens 3 radius of curvature towards thing side one side surface, R6It is the 3rd lens 3 radius of curvature towards image side one side surface.
Mobile phone imaging lens as above, it is characterized in that: the 4th described lens 4 are the aspheric surface of negative power towards image side one side surface, and closer to edge, negative power is more little, further, the 4th described lens 4 also include a flex point in the surface curve of side, image side.
Mobile phone imaging lens as above, it is characterized in that: first described lens the 1, second lens the 2, the 3rd lens 3 and the 4th lens 4 are plastic lens, between described the first lens 1 and the second lens 2, between the second lens 2 and the 3rd lens 3, are respectively equipped with light-shielding sheet 5 between the 3rd lens 3 and the 4th lens 4.
Compared with prior art, this utility model has the following advantages:
1, this utility model can reach resolution 3678.3 μm * 2767.68 μm, and the angle of visual field can reach 79.5 °, and camera lens overall length narrows down to 3.4mm, thus realizing characteristic ultra-thin, high definition.
2, four lens that this utility model uses, are all plastic aspherical elements, lower cost for material, adopt precise injection molding technique to obtain, and are conducive to reducing external dimensions and the weight of lens, thus having saved product cost.
3, optical system of the present utility model adopts telecentric beam path, it is ensured that the overall length of camera lens is less, and the contrast that light arrives image planes is better, and capacity usage ratio is high.
4, optical system of the present utility model, image illumination uniformity is high.
[accompanying drawing explanation]
Fig. 1 is this utility model structural representation；
Fig. 2 is ray trajectory figure of the present utility model；
Fig. 3 is transfer curve figure of the present utility model；
Fig. 4 is the curvature of field of the present utility model and distortion curve figure；
Fig. 5 is one of vertical axial aberration curve chart of the present utility model；
Fig. 6 is the two of vertical axial aberration curve chart of the present utility model.
[detailed description of the invention]
Below in conjunction with accompanying drawing, this utility model is further described:
A kind of mobile phone imaging lens, including lens barrel 100, described lens barrel 100 is provided with aperture diaphragm 200, it is sequentially provided with the first lens 1 from aperture diaphragm 200 to image side in described lens barrel 100, second lens 2, 3rd lens 3 and the 4th lens 4, the first described lens 1 are the biconvex lens of positive focal length, the second described lens 2 are the biconcave lens of negative focal length, the 3rd described lens 3 are plus lens, and the 3rd described lens 3 are concave surface towards the surface of thing side, it is convex surface towards the surface of image side, the 4th described lens 4 are minus lens, and the 4th described lens 4 are convex surface towards the surface of thing side, it is concave surface towards the surface of image side, the first described lens 1, second lens 2, the surface of the 3rd lens 3 and the 4th lens 4 is aspheric surface.First lens 1 are plus lens, it is provided that the part focal power of mobile phone imaging lens optical system, and can reduce the total length of optical system；Second lens 2 are minus lens, it is possible to be used for correcting aberration produced by the first lens 1 and aberration produced by optical system；3rd lens 3 are plus lens, it is possible to effectively distribute the focal power of the first lens 1 and reduce the sensitivity of optical system；4th lens 4 are minus lens, can so that the principal point of optical system (principal point can simply be understood as the center of optical system, optical system principal point can shorten the overall length of system away from image planes, make the mobile lens thinner) away from image planes, thus effectively reducing camera lens overall length, it is thus achieved that overall compact optical system.Mobile phone imaging lens optical system arranges two minus lenses, adds the divergence of beam effect of optical system, it is ensured that when the angle of visual field is very big, the imaging making image planes edge is excellent.It addition, the first lens 1 are biconvex lens, it is possible to increase the focal power of the first lens 1, thus reducing the overall length of optical system；Second lens 2 are biconcave lens, it is possible to increase rear Jiao of optical system, thus providing more space for the 3rd lens 3 and arranging of the 4th lens 4；3rd lens 3 are concave surface towards the surface of thing side, are convex surface towards the surface of image side, it is possible to the astigmatism of effective correcting optical system；4th lens 4 are convex surface towards the surface of thing side, are concave surface towards the surface of image side, it is possible to the astigmatism of correcting optical system and higher order aberratons.Furthermore, aperture diaphragm 200 is arranged between the first lens 1 and object, can ensure that emergent pupil face is away from image planes 300, the light projecting image planes 300 is similar to vertical image planes 300, the chief ray incidence angles avoiding luminous flux at image planes 300 edge imaging is too little, thus the while of ensureing the telecentricity character of optical system, reducing the overall length of optical system.
Described mobile phone imaging lens meets following formula: L/2Y < 0.9, wherein, L is along optical axis direction, first lens 1 are towards the intersection point of thing side one side surface and optical axis to the distance of image planes 300,2Y is the cornerwise length of image planes 300, and image planes 300 are length-width ratios is the rectangular planes of 4:3.When meeting above-mentioned relation formula, it is ensured that the telecentricity character of optical system, reduce the overall length of optical system so that mobile phone imaging lens volume is little and compact.
Described mobile phone imaging lens meets following formula: 0.95 < F12/ F < 1.35, wherein, F is total focal length of mobile phone imaging lens, F12It it is the combined focal length of the first lens 1 and the second lens 2.Work as F12During/F < 1.35, it is ensured that the combined focal length F of the first lens 1 and the second lens 212For just, thus obtaining a shorter optical system of overall length；As 0.95 < F12During/F, it is ensured that the combined focal length F of the first lens 1 and the second lens 212Will not be excessive, and high-order spherical aberration and coma can be corrected, make the imaging performance of mobile phone imaging lens more preferably.
Described mobile phone imaging lens meets following formula: 0.2 < F3/ F < 0.6, wherein, F is total focal length of mobile phone imaging lens, F3It it is the focal length of the 3rd lens 3.When meeting above-mentioned relation formula, the positive light coke in optical system can effectively be distributed, and without making some lens undertake bigger focal power, thus reducing the sensitivity of system, improves the imaging performance of mobile phone imaging lens.
Described mobile phone imaging lens meets following formula: 0.15 < F4/ F < 0.55, wherein, F is total focal length of mobile phone imaging lens, F4It it is the focal length of the 4th lens 4.When meeting above-mentioned relation formula, the aberration that the 4th lens 4 produce can well be corrected, to improve the image quality of whole optical system.
Described mobile phone imaging lens meets following formula: 0.5 < (R1+R2)/(R1-R2) < 1.5, wherein, R1It is first lens 1 radius of curvature towards thing side one side surface, R2It is first lens 1 radius of curvature towards image side one side surface.As (R1+R2)/(R1-R2) < 1.5 time, it is possible to the positive light coke controlling the first lens 1 is not too large, thus limiting coma, the curvature of field and the aberration produced by the second lens 2；As 0.5 < (R1+R2)/(R1-R2) time, it is possible to fully optimize the marginal portion of the first lens 1 and the space length of aperture diaphragm 200, reduce the overall length of mobile phone imaging lens.
Described mobile phone imaging lens meets following formula: 0.1 < (R3+R4)/(R3-R4) < 1.5, wherein, R3It is second lens 2 radius of curvature towards thing side one side surface, R4It is second lens 2 radius of curvature towards image side one side surface.As 0.1 < (R3+R4)/(R3-R4) time, it is possible to increase second lens 2 focal power towards image side one side surface so that coma, astigmatism, aberration etc. are easier correction.Furthermore, it is possible to make the second lens 2 tend towards stability towards the shape of image side one side surface, therefore will be easier to optimize by the off-axial beam of this marginal surface part；As (R3+R4)/(R3-R4) < 1.5 time, make the second lens 2 not too large towards the focal power of image side one side surface, and then make various aberration can also correct a state relatively balanced.
Described mobile phone imaging lens meets following formula: 1.0 < (R5+R6)/(R5-R6) < 2.0, wherein, R5It is the 3rd lens 3 radius of curvature towards thing side one side surface, R6It is the 3rd lens 3 radius of curvature towards image side one side surface.As 1.0 < (R5+R6)/(R5-R6) time, the focal power of the 3rd lens 3 will not be excessive, and spherical aberration and coma are relatively easy to control；As (R5+R6)/(R5-R6) < 2.0 time, it is ensured that the focal power of the 3rd lens 3 is sufficiently large, equally possible control spherical aberration and coma, and makes the overall length of optical system reduce.
The 4th described lens 4 are the aspheric surface of negative power towards image side one side surface, and closer to edge, negative power is more little.Further, the 4th described lens 4 also include a flex point in the surface curve of side, image side.This structure can ensure that light arrives the telecentricity character of image planes 300, it is also possible to optimizes the focal power distribution of the second lens 2 so that it is the negative power at edge is unlikely to too small, can also correct off-axis aberration simultaneously.
First described lens the 1, second lens the 2, the 3rd lens 3 and the 4th lens 4 are plastic lens, the material of the first described lens 1 is APEL5514ML, the material of the second described lens 2 is OKP-1, the material of the 3rd described lens 3 is APEL5514ML, and the material of the 4th described lens 4 is E48R.Between described the first lens 1 and the second lens 2, between the second lens 2 and the 3rd lens 3, between the 3rd lens 3 and the 4th lens 4, it is respectively equipped with light-shielding sheet 5.Being additionally provided with spacer ring 6 between described the 4th lens 4 and image planes 300, spacer ring 6 is connected with lens barrel 100 and first lens the 1, second lens the 2, the 3rd lens 3 and the 4th lens 4 is fixed in lens barrel 100.
This utility model is a small size imaging lens, it is possible to be applied to carry in the terminal of solid photo-sensitive cell, as being equipped with the smart mobile phone of CCD or cmos sensor.Particularly in, under the development trend that smart mobile phone is lightening, the demand of this kind of small size mobile phone imaging lens being continued to increase.
Table 1 is the structural parameters table of this utility model mobile phone imaging lens
Table 1
Each aspheric surface that table 2 is the first lens 1 and the second lens 2 loses the high ratio range with radius R
Table 2
Each aspheric surface that table 3 is the 3rd lens 3 and the 4th lens 4 loses the high ratio range with radius R
Table 3
Claims (10)
- null1. a mobile phone imaging lens，It is characterized in that: include lens barrel (100)，Described lens barrel (100) is provided with aperture diaphragm (200)，It is sequentially provided with the first lens (1) from aperture diaphragm (200) to image side in described lens barrel (100)、Second lens (2)、3rd lens (3) and the 4th lens (4)，The biconvex lens that described the first lens (1) are positive focal length，The biconcave lens that described the second lens (2) are negative focal length，The 3rd described lens (3) are plus lens，And the 3rd described lens (3) are concave surface towards the surface of thing side，It is convex surface towards the surface of image side，The 4th described lens (4) are minus lens，And the 4th described lens (4) are convex surface towards the surface of thing side，It is concave surface towards the surface of image side，Described the first lens (1)、Second lens (2)、The surface of the 3rd lens (3) and the 4th lens (4) is aspheric surface.
- 2. mobile phone imaging lens according to claim 1, it is characterized in that: described mobile phone imaging lens meets following formula: L/2Y < 0.9, wherein, L is along optical axis direction, first lens (1) are towards the intersection point of thing side one side surface and optical axis to the distance of image planes (300), 2Y is image planes (300) cornerwise length, and image planes (300) are length-width ratios is the rectangular planes of 4:3.
- 3. mobile phone imaging lens according to claim 1, it is characterised in that: described mobile phone imaging lens meets following formula: 0.95 < F12/ F < 1.35, wherein, F is total focal length of mobile phone imaging lens, F12It is the first lens (1) and the combined focal length of the second lens (2).
- 4. mobile phone imaging lens according to claim 1, it is characterised in that: described mobile phone imaging lens meets following formula: 0.2 < F3/ F < 0.6, wherein, F is total focal length of mobile phone imaging lens, F3It it is the focal length of the 3rd lens (3).
- 5. mobile phone imaging lens according to claim 1, it is characterised in that: described mobile phone imaging lens meets following formula: 0.15 < F4/ F < 0.55, wherein, F is total focal length of mobile phone imaging lens, F4It it is the focal length of the 4th lens (4).
- 6. mobile phone imaging lens according to claim 1, it is characterised in that: described mobile phone imaging lens meets following formula: 0.5 < (R1+R2)/(R1-R2) < 1.5, wherein, R1It is the first lens (1) radius of curvature towards thing side one side surface, R2It is the first lens (1) radius of curvature towards image side one side surface.
- 7. mobile phone imaging lens according to claim 1, it is characterised in that: described mobile phone imaging lens meets following formula: 0.1 < (R3+R4)/(R3-R4) < 1.5, wherein, R3It is the second lens (2) radius of curvature towards thing side one side surface, R4It is the second lens (2) radius of curvature towards image side one side surface.
- 8. mobile phone imaging lens according to claim 1, it is characterised in that: described mobile phone imaging lens meets following formula: 1.0 < (R5+R6)/(R5-R6) < 2.0, wherein, R5It is the 3rd lens (3) radius of curvature towards thing side one side surface, R6It is the 3rd lens (3) radius of curvature towards image side one side surface.
- 9. mobile phone imaging lens according to claim 1, it is characterized in that: the 4th described lens (4) are the aspheric surface of negative power towards image side one side surface, and closer to edge, negative power is more little, further, the 4th described lens 4 also include a flex point in the surface curve of side, image side.
- 10. mobile phone imaging lens according to claim 1, it is characterized in that: described the first lens (1), the second lens (2), the 3rd lens (3) and the 4th lens (4) are plastic lens, between described the first lens (1) and the second lens (2), between the second lens (2) and the 3rd lens (3), are respectively equipped with light-shielding sheet (5) between the 3rd lens (3) and the 4th lens (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620128273.9U CN205404938U (en) | 2016-02-18 | 2016-02-18 | Cell -phone imaging lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620128273.9U CN205404938U (en) | 2016-02-18 | 2016-02-18 | Cell -phone imaging lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572845A (en) * | 2016-02-18 | 2016-05-11 | 中山市众盈光学有限公司 | Mobile phone imaging lens |
| CN106646836A (en) * | 2016-12-20 | 2017-05-10 | 中山联合光电科技股份有限公司 | Large aperture wide angle small imaging system |
| CN107121762A (en) * | 2017-06-30 | 2017-09-01 | 中山市众盈光学有限公司 | A kind of on-vehicle lens optical system |
-
2016
- 2016-02-18 CN CN201620128273.9U patent/CN205404938U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572845A (en) * | 2016-02-18 | 2016-05-11 | 中山市众盈光学有限公司 | Mobile phone imaging lens |
| CN105572845B (en) * | 2016-02-18 | 2018-06-01 | 中山市众盈光学有限公司 | A kind of mobile phone imaging lens |
| CN106646836A (en) * | 2016-12-20 | 2017-05-10 | 中山联合光电科技股份有限公司 | Large aperture wide angle small imaging system |
| CN107121762A (en) * | 2017-06-30 | 2017-09-01 | 中山市众盈光学有限公司 | A kind of on-vehicle lens optical system |
| CN107121762B (en) * | 2017-06-30 | 2023-09-08 | 中山市众盈光学有限公司 | Vehicle-mounted lens optical system |
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