CN205720844U - A kind of mobile phone imaging lens - Google Patents
A kind of mobile phone imaging lens Download PDFInfo
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- CN205720844U CN205720844U CN201620308523.7U CN201620308523U CN205720844U CN 205720844 U CN205720844 U CN 205720844U CN 201620308523 U CN201620308523 U CN 201620308523U CN 205720844 U CN205720844 U CN 205720844U
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- phone imaging
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Abstract
The utility model discloses a kind of mobile phone imaging lens, including 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) be focal length be 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) be focal length be 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) be focal length be 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.This utility model simple in construction, the angle of visual field is big, and picture element is high.
Description
[technical field]
This utility model 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 subtracts
Little.These undersized photo-sensitive cells, are applied on smart mobile phone or computer by substantial amounts of.Hands
Machine has had camera function, computer to have video capability.The being convenient for carrying property of mobile phone makes people opponent
The performance of taking pictures of machine receives much concern, and therefore, performance Cheng Liao of taking pictures consumers select the head of mobile phone
Want Consideration.People's great attention to cultural life, has started swashing of optical design industry
Strong competition so that mobile lens is constantly towards miniaturization, and high pixel, the direction of the big angle of visual field is sent out
Exhibition.
Mobile lens the most on the market generally has the disadvantage in that the mobile phone one of main flow on market
As from thing side to image side, 3 pieces of eyeglasses are set, first piece of eyeglass is plus lens, and second piece of eyeglass is
Minus lens, the 3rd piece of eyeglass is plus lens, uses the frame mode of positive negative and positive so that the angle of visual field
Focusing mostly near 70 °, the angle of visual field is less, therefore in viewfinder range, needs longer
Shooting distance just can be found a view completely, but shooting distance is remote, and the quality of picture element will be inevitable
Ground reduces, thus sacrifices picture element.
Therefore, this utility model is precisely in order to overcome above shortcoming and produce.
[utility model content]
This utility model purpose is 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 °, mobile lens overall length can foreshorten to 2.88mm, and pixel reaches 5,000,000.
This utility model is achieved through the following technical solutions:
A kind of mobile phone imaging lens, it is characterised in that: include lens barrel 100, described lens barrel 100
In be sequentially provided with the first lens 1, diaphragm the 2, first light-shielding sheet 3, second from thing side to image side
Lens the 4, second light-shielding sheet the 5, the 3rd lens 6 and spacer ring 7, the first described lens 1 are
Focal length is positive plastic aspheric lenes, and the first described lens 1 are towards the one side of thing side
For convex surface；The second described lens 4 be focal length be positive falcate plastic aspheric lenes, and
And the second described lens 4 towards the one side of thing side be concave surface, one side towards image side be convex
Face；The 3rd described lens 6 be focal length be negative plastic aspheric lenes, and described
Three 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: Jiao of the first described lens 1
Following formula is met: 0.8 < F1/F < 1.3 away from F1 and mobile phone imaging lens total focal length F.
Mobile phone imaging lens as above, it is characterised in that: Jiao of the 3rd described lens 6
Following formula is met: 2 < F3/F < 4 away from F3 and mobile phone imaging lens total focal length F.
Mobile phone imaging lens as above, it is characterised in that: the second described lens 4 towards
The radius of curvature R 4 of the one side of image side and mobile phone imaging lens total focal length F meet following formula:
0.3<|R4/F|<0.7。
Mobile phone imaging lens as above, it is characterised in that: the picture of described mobile phone imaging lens
The catercorner length 2Y in face 200 and mobile phone imaging lens overall length L meet following formula:
L/2Y<0.6。
Mobile phone imaging lens as above, it is characterised in that: the 3rd described lens 6 are towards picture
The aspheric surface that centre of surface part is negative power of side, side, and closer to edge, negative light
Focal power is the least.
Mobile phone imaging lens as above, it is characterised in that: the 3rd described lens 6 side
It is additionally provided with optical filter 300.
Mobile phone imaging lens as above, it is characterised in that: the picture of described mobile phone imaging lens
The size in face 200 is 2.9mm*2.1mm, and its catercorner length is 3.6mm.
Compared with prior art, this utility model has the following advantages:
1, the angle of visual field of the present utility model can reach 84 °, and overall length shortens to 2.88mm,
Realize ultra-wide angle, ultra-thin characteristic.
2, the first lens, the second lens and the 3rd lens once arranged of the present utility model
Structure is respectively adopted plus lens, plus lens and minus lens, forms the most positive and negative structure.First lens,
Second lens and the 3rd lens all use plastic cement aspherical lens, use precise injection molding technique to obtain
, be conducive to reducing external dimensions and the weight of mobile phone imaging lens, save cost.
3, the 3rd lens of the present utility model are negative light towards the centre of surface part of side, image side
The aspheric surface of focal power, and closer to edge, negative power is the least, and this structure can ensure that light
Line arrives the telecentricity character of image planes.
[accompanying drawing explanation]
Fig. 1 is this utility model sectional view；
Fig. 2 is this utility model index path；
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 horizontal color curve of the present utility model.
[detailed description of the invention]
Below in conjunction with the accompanying drawings this utility model is further described:
A kind of mobile phone imaging lens, including lens barrel 100, in described lens barrel 100 from thing side to
Image side is sequentially provided with the first lens 1, diaphragm the 2, first light-shielding sheet the 3, second lens 4, second
Light-shielding sheet the 5, the 3rd lens 6 and spacer ring 7, the first described lens 1 be focal length be positive moulding
Glue non-spherical lens, and the first described lens 1 are convex surface towards the one side of thing side；Described
The second lens 4 be focal length be positive falcate plastic aspheric lenes, and described second
Lens 4 towards the one side of thing side be concave surface, one side towards image side be convex surface；Described the 3rd
Lens 6 be focal length be negative plastic aspheric lenes, and the 3rd described lens 6 are towards thing
The one side of side is convex surface, one side towards image side is concave surface.Mobile phone imaging lens uses above-mentioned knot
Structure, becomes telecentric system, and size is reduced, and ensure that the visual field of optical system simultaneously
Angle is big, makes various aberration all be corrected.It is burnt that first lens 1 and the second lens 4 are positive light
Degree lens, limit spherical aberration and the generation of coma.Further, the first lens 1 are towards the one side of thing side
For convex surface, 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.Described the first lens 1,
Two lens 4 and the 3rd lens 6 all use plastic cement material APEL5514.
Below the focal length F1 of the first described lens 1 and mobile phone imaging lens total focal length F meets
Expression formula: 0.8 < F1/F < 1.3.This formula is for adjusting the focal power of the first lens 1.Work as ratio
Higher than lower limit 0.8 and less than higher limit 1.3 time, it is ensured that the first lens 1 have a conjunction
The focal power of reason, it is possible to limit high-order spherical aberration and coma that the first lens 1 produce, thus improve
The image quality of whole mobile phone imaging lens.
Below the focal length F3 of the 3rd described lens 6 and mobile phone imaging lens total focal length F meets
Expression 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 and less than higher limit 4 time, can sufficiently ensure the negative power of the 3rd lens 6,
The overall length of whole mobile phone imaging lens can be reduced, it is also possible to the correction off-axis aberration (curvature of field and abnormal
Become), and the luminous flux at arrival image planes 200 edge can be made to increase sharply suddenly, it is ensured that light
Bundle arrives telecentricity characteristic during image planes, improves the picture element of mobile phone imaging lens.
The second described lens 4 are towards the radius of curvature R 4 of the one side of image side and mobile phone imaging lens
The total focal length F of head meets following formula: 0.3 < | R4/F | < 0.7.When ratio is more than lower limit
0.3 and less than higher limit 0.7 time, mobile phone imaging lens optical system can limit Off-axis-light
Coma and lens barrel 100 off-axis.It is additionally, since second lens 4 one side towards image side
Curvature be not too big, the course of processing making the second lens 4 is the most more convenient.When ratio is less than
During higher limit 0.7, can fully keep the second lens 4 towards the curvature light on the surface of side, image side
Focal power, alternatively, it is also possible to the various off-axis aberrations making the negative power of the 3rd lens 6 cause obtain
To correction, it is often more important that, can be easy to ensure the telecentricity character of image planes 200, improve whole
The picture element of individual 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.Meet above formula, then mobile phone imaging lens
Overall length can be reduced, size and the weight of mobile phone imaging lens are reduced, more compact structure,
Take up room little.
The 3rd described lens 6 are the non-of negative power towards the centre of surface part of side, image side
Sphere, and closer to edge, negative power is the least.
The 3rd described lens 6 side is additionally provided with optical filter 300.
This utility model mobile phone imaging lens angle of visual field is up to 84 °, and camera lens overall length foreshortens to
2.88mm, 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,
Effectively imaging region is 2592*1944.The size of image planes is 2.9mm*2.1mm, its diagonal
A length of 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 this utility model mobile phone imaging lens excellent optical performance.
Table 1 to table 4 is the design parameter of this utility model mobile phone imaging lens:
Table 1 is the structural parameters table of this utility model mobile phone imaging lens
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 of its radius R
Value scope
Table 4 is the ratio range of the 3rd lens 6 each aspheric surface rise and radius R
Claims (6)
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) be focal length be 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) be focal length be 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) be focal length be 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, the 3rd described lens (6) side is additionally provided with optical filter (300), and the focal length F3 and mobile phone imaging lens total focal length F of the 3rd described lens (6) meets following formula: 2 < F3/F < 4.
Mobile phone imaging lens the most according to claim 1, it is characterised in that: the focal length F1 of described the first lens (1) and mobile phone imaging lens total focal length F meet following formula: 0.8 < F1/F < 1.3.
Mobile phone imaging lens the most according to claim 1 and 2, it is characterised in that: described the second lens (4) meet following formula towards radius of curvature R 4 and mobile phone imaging lens total focal length F of the one side of image side: 0.3 < | R4/F | < 0.7.
Mobile phone imaging lens the most according to claim 1 and 2, 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 meet following formula: L/2Y < 0.6.
Mobile phone imaging lens the most 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 the least.
Mobile phone imaging lens the most according to claim 1, it is characterised in that: the size of the image planes (200) of described mobile phone imaging lens is 2.9mm*2.1mm, and its catercorner length is 3.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308523.7U CN205720844U (en) | 2016-04-13 | 2016-04-13 | A kind of mobile phone imaging lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620308523.7U CN205720844U (en) | 2016-04-13 | 2016-04-13 | A kind of mobile phone imaging lens |
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| Publication Number | Publication Date |
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| CN205720844U true CN205720844U (en) | 2016-11-23 |
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| CN201620308523.7U Active CN205720844U (en) | 2016-04-13 | 2016-04-13 | A kind of mobile phone imaging lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942462A (en) * | 2017-10-25 | 2018-04-20 | 瑞声科技(新加坡)有限公司 | Lens assembly |
-
2016
- 2016-04-13 CN CN201620308523.7U patent/CN205720844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942462A (en) * | 2017-10-25 | 2018-04-20 | 瑞声科技(新加坡)有限公司 | Lens assembly |
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