CN105572839B - Imaging lens - Google Patents
Imaging lens Download PDFInfo
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- CN105572839B CN105572839B CN201410529850.0A CN201410529850A CN105572839B CN 105572839 B CN105572839 B CN 105572839B CN 201410529850 A CN201410529850 A CN 201410529850A CN 105572839 B CN105572839 B CN 105572839B
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- 238000003384 imaging method Methods 0.000 title claims description 95
- 230000003287 optical effect Effects 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 20
- 230000005499 meniscus Effects 0.000 claims description 8
- 238000009738 saturating Methods 0.000 claims description 4
- 230000004075 alteration Effects 0.000 description 18
- 201000009310 astigmatism Diseases 0.000 description 12
- 230000000007 visual effect Effects 0.000 description 7
- 241000700608 Sagitta Species 0.000 description 6
- 101000658638 Arabidopsis thaliana Protein TRANSPARENT TESTA 1 Proteins 0.000 description 4
- 101100262183 Arabidopsis thaliana TTL2 gene Proteins 0.000 description 4
- 101100262192 Arabidopsis thaliana TTL3 gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 101000801088 Homo sapiens Transmembrane protein 201 Proteins 0.000 description 2
- 101100233058 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) IMA2 gene Proteins 0.000 description 2
- 101100075908 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) IMA3 gene Proteins 0.000 description 2
- 102100033708 Transmembrane protein 201 Human genes 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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Abstract
Sequentially include the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens along optical axis from thing side to image side the present invention relates to a kind of imaging lens.First lens are that biconvex lens has positive refractive power.Second lens are that meniscus shaped lens has a negative refractive power, the second lens convex surface facing thing side concave surface towards image side.3rd lens have positive refractive power and including convex surface facing image sides.4th lens are that meniscus shaped lens has a negative refractive power, and the concave surfaces of the 4th lens is towards thing side convex surface facing image side.5th lens are that meniscus shaped lens has a negative refractive power, and the concave surfaces of the 5th lens is towards thing side convex surface facing image side.6th lens are that meniscus shaped lens has a positive refractive power, the 6th lens convex surface facing thing side concave surface towards image side.
Description
Technical field
The present invention is related to a kind of imaging lens.
Background technology
Digital camera is several constantly toward high picture element and lightweight development with hand so that miniaturization is with having high-resolution mirror
Head module demand increases.The needs of camera lens module of known five lens composition can not meet now is, it is necessary to there is another kind
The camera lens module of new architecture, miniaturization and high-resolution demand could be met simultaneously.
The content of the invention
The technical problem to be solved in the present invention is, miniaturization and height can not be taken into account for camera lens module of the prior art
The defects of resolution ratio, there is provided a kind of imaging lens, miniaturization and high-resolution can be taken into account.
The present invention is solves its technical problem the technical scheme adopted is that providing a kind of imaging lens along optical axis from thing
Side to image side sequentially includes the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens.First is saturating
Mirror is that biconvex lens has positive refractive power.Second lens are that meniscus shaped lens has a negative refractive power, the second lens convex surface facing
Thing side concave surface is towards image side.3rd lens have positive refractive power and including convex surface facing image sides.4th lens are meniscus shaped lens
With negative refractive power, the concave surfaces of the 4th lens is towards thing side convex surface facing image side.5th lens are that meniscus shaped lens has negative bend
Luminous power, the concave surfaces of the 5th lens is towards thing side convex surface facing image side.6th lens are that meniscus shaped lens has a positive refractive power, the 6th
Lens convex surface facing thing side concave surface towards image side.
Wherein imaging lens meet following condition：0.8104≤f/TTL≤0.8201；Wherein, f is the effective of imaging lens
Focal length, TTL be the first lens thing side surface to imaging surface in the distance on optical axis.
Wherein the 4th lens and the 6th lens meet following condition：0.1357≤|(R41-R42)/(R41+R42)|+|(R61-
R62)/(R61+R62)|≤0.1694；Wherein, R41 is the radius of curvature of the thing side of the 4th lens, and R42 is the picture of the 4th lens
The radius of curvature of side, R61 are the radius of curvature of the thing side of the 6th lens, and R62 is the curvature half of the image side surface of the 6th lens
Footpath.
Wherein the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens meet following article
Part：-0.4290≤f123/f456≤-0.4127；Wherein, f123 is that the combination of the first lens, the second lens and the 3rd lens is effective
Focal length, f456 are the combination effective focal length of the 4th lens, the 5th lens and the 6th lens.
Wherein the 4th lens meet following condition：-14.8795≤f4/f≤-11.913；Wherein, f4 is the 4th lens
Effective focal length, f are the effective focal length of imaging lens.
Wherein the 5th lens meet following condition：-2.7543≤f5/f≤-2.2539；Wherein, f5 is having for the 5th lens
Focal length is imitated, f is the effective focal length of imaging lens.
Wherein the 6th lens meet following condition：9.0882≤f6/f≤63.4223；Wherein, f6 is having for the 6th lens
Focal length is imitated, f is the effective focal length of imaging lens.
Wherein the first lens, the second lens, the 3rd lens, the 4th lens, each lens of the 5th lens and the 6th lens
At least one side is non-spherical surface or two faces are all non-spherical surface.
Wherein the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens are by plastic material
It is made.
The imaging lens of the present invention can further include aperture, be arranged between thing side and the first lens.
Implement the imaging lens of the present invention, have the advantages that：Its camera lens total length is short and small, visual angle is larger, still
Still there is good optical property, resolution of lens can also meet to require.
To enable above-mentioned purpose, feature and the advantage of the present invention to become apparent, preferred embodiment cited below particularly simultaneously coordinates
Accompanying drawing elaborates.
Brief description of the drawings
Fig. 1 is the lens configuration and light path schematic diagram according to the first embodiment of the imaging lens of the present invention.
Fig. 2A is the longitudinal spherical aberration figure of Fig. 1 imaging lens.
Fig. 2 B are the astigmatism curvature of field figures of Fig. 1 imaging lens.
Fig. 2 C are the distortion figures of Fig. 1 imaging lens.
Fig. 3 is the lens configuration and light path schematic diagram according to the second embodiment of the imaging lens of the present invention.
Fig. 4 A are the longitudinal spherical aberration figures of Fig. 3 imaging lens.
Fig. 4 B are the astigmatism curvature of field figures of Fig. 3 imaging lens.
Fig. 4 C are the distortion figures of Fig. 3 imaging lens.
Fig. 5 is the lens configuration and light path schematic diagram according to the 3rd embodiment of the imaging lens of the present invention.
Fig. 6 A are the longitudinal spherical aberration figures of Fig. 5 imaging lens.
Fig. 6 B are the astigmatism curvature of field figures of Fig. 5 imaging lens.
Fig. 6 C are the distortion figures of Fig. 5 imaging lens.
Embodiment
Referring to Fig. 1, Fig. 1 is lens configuration and the light path signal according to the first embodiment of the imaging lens of the present invention
Figure.Imaging lens 1 sequentially include aperture ST1, the first lens L11, the second lens L12, the along optical axis OA1 from thing side to image side
Three lens L13, the 4th lens L14, the 5th lens L15, the 6th lens L16 and optical filter OF1.First lens L11, which has, just to bend
Luminous power is made up of plastic material, and its thing side S12 is that convex surface image side surface S13 is convex surface, and thing side S12 is all with image side surface S13
Non-spherical surface.There is second lens L12 negative refractive power to be made up of plastic material, and its thing side S14 is that convex surface image side surface S15 is
Concave surface, thing side S14 and image side surface S15 is all non-spherical surface.3rd lens L13 has positive refractive power by plastic material system
Into its thing side S16 is concave surface, and image side surface S17 is convex surface, and thing side S16 and image side surface S17 is all non-spherical surface.4th
There is lens L14 negative refractive power to be made up of plastic material, and its thing side S18 is that concave surface image side surface S19 is convex surface, thing side S18
It is all non-spherical surface with image side surface S19.There is 5th lens L15 negative refractive power to be made up of plastic material, its thing side S110
It is convex surface for concave surface image side surface S111, thing side S110 and image side surface S111 is all non-spherical surface.6th lens L16 has just
Refractive power is made up of plastic material, and its thing side S112 is that convex surface image side surface S113 is concave surface, thing side S112 and image side surface
S113 is all non-spherical surface.Its thing side S114 of optical filter OF1 and image side surface S115 is all plane.
In addition, to enable the imaging lens of the present invention to keep good optical property, the imaging lens 1 in first embodiment
Six conditions under need to meeting：
0.8104≤f1/TTL1≤0.8201 (1)
0.1357≤|(R141-R142)/(R141+R142)|+|(R161-R162)/(R161+R162)|≤0.1694 (2)
-0.4290≤f1123/f1456≤-0.4127 (3)
-14.8795≤f14/f1≤-11.913 (4)
-2.7543≤f15/f1≤-2.2539 (5)
9.0882≤f16/f1≤63.4223 (6)
Wherein, f1 is the effective focal length of imaging lens 1, and TTL1 is the first lens L11 thing side S12 to imaging surface IMA1
Distance on optical axis OA1, R141For the 4th lens L14 thing side S18 radius of curvature, R142For the 4th lens L14 picture
Side S19 radius of curvature, R161For the 6th lens L16 thing side S112 radius of curvature, R162For the 6th lens L16's
Image side surface S113 radius of curvature, f1123Combination for the first lens L11, the second lens L12 and the 3rd lens L13 is effectively burnt
Away from f1456For the 4th lens L14, the 5th lens L15 and the 6th lens L16 combination effective focal length, f14For the 4th lens L14
Effective focal length, f15For the 5th lens L15 effective focal length, f16For the 6th lens L16 effective focal length.
Utilize said lens and aperture ST1 design so that imaging lens 1 can effectively shorten camera lens total length, improve
Visual angle, effectively correct aberration, lifting resolution of lens.
Table one is the relevant parameter table of each lens of imaging lens 1 in Fig. 1, and the data of table one show the imaging lens of the present embodiment
First 1 effective focal length is equal to 4.202mm, f-number is equal to 2.2, visual angle and is equal to 5.123mm equal to 68.8 °, camera lens total length.
Table one
Obtained by the non-spherical surface depression degree z of each lens is by following equation in table one：
Z=ch2/{1+[1-(k+1)c2h2]1/2}+Ah4+Bh6+Ch8+Dh10+Eh12+Fh14+Gh16
Wherein：
c：Curvature；
h：Lens surface any point to optical axis vertical range；
k：Circular cone coefficient；
A~G：Asphericity coefficient.
Table two is the relevant parameter table of the non-spherical surface of each lens in table one, and wherein k is circular cone coefficient (Conic
Constant), A~G is asphericity coefficient.
Table two
Its effective focal length of the imaging lens 1 of first embodiment f1=4.202mm, the first lens L11 thing side S12 into
As camera lens face IMA1 is in the thing side S18 of distance TTL1=5.123mm, the 4th lens L14 on optical axis OA1 radius of curvature
R141=-3.54677mm, the 4th lens L14 image side surface S19 radius of curvature R 142=-4.07026mm, the 6th lens L16
Thing side S112 radius of curvature R 161=2.37665mm, the 6th lens L16 image side surface S113 radius of curvature R 162=
2.04121mm, the first lens L11, the second lens L12 and the 3rd lens L13 combination effective focal length f1123=3.4026mm, the
Four lens L14, the 5th lens L15 and the 6th lens L16 combination effective focal length f1456=-8.2153mm, the 4th lens L14's
Effective focal length f14=-62.5167mm, the 5th lens L15 effective focal length f15=-11.00288mm, the 6th lens L16's has
Imitate focal length f16=171.08238mm, by above-mentioned data can obtain f1/TTL1=0.8201, | (R141-R142)/(R141+R142)|
+|(R161-R162)/(R161+R162) |=0.1447, f1123/f1456=-0.4142, f14/ f1=-14.8795, f15/ f1=-
2.6188、f16/ f1=40.7191, it can all meet requirement of the above-mentioned condition (1) to condition (6).
In addition, the optical property of the imaging lens 1 of first embodiment also can reach requirement, this can find out from Fig. 2A to 2C.
It is longitudinal spherical aberration (the Longitudinal Spherical of the imaging lens 1 of first embodiment shown in Fig. 2A
Aberration) figure.It is the astigmatism curvature of field (the Astigmatic Field of the imaging lens 1 of first embodiment shown in Fig. 2 B
Curves) figure.It is distortion (Distortion) figure of the imaging lens 1 of first embodiment shown in Fig. 2 C.
Can be seen that by Fig. 2A, the imaging lens 1 of first embodiment be to wavelength 435.8400nm, 546.0700nm,
Longitudinal spherical aberration value caused by 656.2800nm light is between 0.000mm between 0.030mm.By Fig. 2 B (sagitta of arc in figure
Three lines in direction almost overlap, and three lines of meridian direction also almost overlap, so that seeming only two-lines) it can see
Go out, the imaging lens 1 of first embodiment are to the light that wavelength is 435.8400nm, 546.0700nm, 656.2800nm, in meridian
(Tangential) the astigmatism curvature of field in direction and the sagitta of arc (Sagittal) direction between -0.025 ㎜ between 0.025 ㎜.By scheming
2C (three lines in figure almost overlap, so that seeming an only line) can be seen that the imaging lens 1 of first embodiment are right
Wavelength is distortion caused by 435.8400nm, 546.0700nm, 656.2800nm light between 0% to 2.1%.It is aobvious
See that the longitudinal spherical aberration, the astigmatism curvature of field, distortion of the imaging lens 1 of first embodiment can be corrected effectively, so as to obtain preferably
Optical property.
Referring to Fig. 3, Fig. 3 is lens configuration and the light path signal according to the second embodiment of the imaging lens of the present invention
Figure.Imaging lens 2 sequentially include aperture ST2, the first lens L21, the second lens L22, the along optical axis OA2 from thing side to image side
Three lens L23, the 4th lens L24, the 5th lens L25, the 6th lens L26 and optical filter OF2.First lens L21, which has, just to bend
Luminous power is made up of plastic material, and its thing side S22 is that convex surface image side surface S23 is convex surface, and thing side S22 is all with image side surface S23
Non-spherical surface.There is second lens L22 negative refractive power to be made up of plastic material, and its thing side S24 is that convex surface image side surface S25 is
Concave surface, thing side S24 and image side surface S25 is all non-spherical surface.3rd lens L23 has positive refractive power by plastic material system
Into its thing side S26 is that concave surface image side surface S27 is convex surface, and thing side S26 and image side surface S27 is all non-spherical surface.4th is saturating
There is mirror L24 negative refractive power to be made up of plastic material, and its thing side S28 is that concave surface image side surface S29 is convex surface, thing side S28 with
Image side surface S29 is all non-spherical surface.There is 5th lens L25 negative refractive power to be made up of plastic material, and its thing side S210 is
Concave surface image side surface S211 is convex surface, and thing side S210 and image side surface S211 is all non-spherical surface.6th lens L26, which has, just to bend
Luminous power is made up of plastic material, and its thing side S212 is that convex surface image side surface S213 is concave surface, thing side S212 and image side surface S213
It is all non-spherical surface.Its thing side S214 of optical filter OF2 and image side surface S215 is all plane.
In addition, to enable the imaging lens of the present invention to keep good optical property, the imaging lens 2 in second embodiment
Six conditions under need to meeting：
0.8104≤f2/TTL2≤0.8201 (7)
0.1357≤|(R241-R242)/(R241+R242)|+|(R261-R262)/(R261+R262)|≤0.1694 (8)
-0.4290≤f2123/f2456≤-0.4127 (9)
-14.8795≤f24/f2≤-11.913 (10)
-2.7543≤f25/f2≤-2.2539 (11)
9.0882≤f26/f2≤63.4223 (12)
Wherein, f2 is the effective focal length of imaging lens 2, and TTL2 is the first lens L21 thing side S22 to imaging surface IMA2
Distance on optical axis OA2, R241For the 4th lens L24 thing side S28 radius of curvature, R242For the 4th lens L24 picture
Side S29 radius of curvature, R261For the 6th lens L26 thing side S212 radius of curvature, R262For the 6th lens L26's
Image side surface S213 radius of curvature, f2123Combination for the first lens L21, the second lens L22 and the 3rd lens L23 is effectively burnt
Away from f2456For the 4th lens L24, the 5th lens L25 and the 6th lens L26 combination effective focal length, f24For the 4th lens L24
Effective focal length, f25For the 5th lens L25 effective focal length, f26For the 6th lens L26 effective focal length.
Utilize said lens and aperture ST2 design so that imaging lens 2 can effectively shorten camera lens total length, improve
Visual angle, effectively correct aberration, lifting resolution of lens.
Table three is the relevant parameter table of each lens of imaging lens 2 in Fig. 3, and the data of table three show the imaging lens of the present embodiment
First 2 effective focal length is equal to 4.212mm, f-number is equal to 2.2, visual angle and is equal to 5.185mm equal to 68.6 °, camera lens total length.
Table three
Obtained by the non-spherical surface depression degree z of each lens is by following equation in table three：
Z=ch2/{1+[1-(k+1)c2h2]1/2}+Ah4+Bh6+Ch8+Dh10+Eh12+Fh14+Gh16
Wherein：
c：Curvature；
h：Lens surface any point to optical axis vertical range；
k：Circular cone coefficient；
A~G：Asphericity coefficient.
Table four is the relevant parameter table of the non-spherical surface of each lens in table three, and wherein k is circular cone coefficient (Conic
Constant), A~G is asphericity coefficient.
Table four
Its effective focal length of the imaging lens 2 of second embodiment f2=4.212mm, the first lens L21 thing side S22 into
As camera lens face IMA2 is in the thing side S28 of distance TTL2=5.185mm, the 4th lens L24 on optical axis OA2 radius of curvature
R241=-3.54017mm, the 4th lens L24 image side surface S29 radius of curvature R 242=-4.17889mm, the 6th lens L26
Thing side S212 radius of curvature R 261=2.04140mm, the 6th lens L26 image side surface S213 radius of curvature R 262=
1.83593mm, the first lens L21, the second lens L22 and the 3rd lens L23 combination effective focal length f2123=3.4926mm, the
Four lens L24, the 5th lens L25 and the 6th lens L26 combination effective focal length f2456=-8.1406mm, the 4th lens L24's
Effective focal length f24=-50.1648mm, the 5th lens L25 effective focal length f25=-9.49230mm, the 6th lens L26's is effective
Focal length f26=38.27514mm, by above-mentioned data can obtain f2/TTL2=0.8122, | (R241-R242)/(R241+R242)|+|
(R261-R262)/(R261+R262) |=0.1357, f2123/f2456=-0.4290, f24/ f2=-11.9113, f25/ f2=-
2.2539、f26/ f2=9.0882, it can all meet requirement of the above-mentioned condition (7) to condition (12).
In addition, the optical property of the imaging lens 2 of second embodiment also can reach requirement, this can find out from Fig. 4 A to 4C.
It is longitudinal spherical aberration (the Longitudinal Spherical of the imaging lens 2 of second embodiment shown in Fig. 4 A
Aberration) figure.It is the astigmatism curvature of field (the Astigmatic Field of the imaging lens 2 of second embodiment shown in Fig. 4 B
Curves) figure.It is distortion (Distortion) figure of the imaging lens 2 of second embodiment shown in Fig. 4 C.
Can be seen that by Fig. 4 A, the imaging lens 2 of second embodiment be to wavelength 435.8400nm, 546.0700nm,
Longitudinal spherical aberration value caused by 656.2800nm light is between -0.002mm between 0.040mm.By Fig. 4 B (sagitta of arc in figure
Three lines in direction almost overlap, and three lines of meridian direction also almost overlap, so that seeming only two-lines) it can see
Go out, the imaging lens 2 of second embodiment are to the light that wavelength is 435.8400nm, 546.0700nm, 656.2800nm, in meridian
(Tangential) the astigmatism curvature of field in direction and the sagitta of arc (Sagittal) direction between -0.025 ㎜ between 0.025 ㎜.By scheming
4C (three lines in figure almost overlap, so that seeming an only line) can be seen that the imaging lens 2 of second embodiment are right
Wavelength is distortion caused by 435.8400nm, 546.0700nm, 656.2800nm light between 0% to 2.0%.It is aobvious
See that the longitudinal spherical aberration, the astigmatism curvature of field, distortion of the imaging lens 2 of second embodiment can be corrected effectively, so as to obtain preferably
Optical property.
Referring to Fig. 5, Fig. 5 is lens configuration and the light path signal according to the 3rd embodiment of the imaging lens of the present invention
Figure.Imaging lens 3 sequentially include aperture ST3, the first lens L31, the second lens L32, the along optical axis OA3 from thing side to image side
Three lens L33, the 4th lens L34, the 5th lens L35, the 6th lens L36 and optical filter OF3.First lens L31, which has, just to bend
Luminous power is made up of plastic material, and its thing side S32 is that convex surface image side surface S33 is convex surface, and thing side S32 is all with image side surface S33
Non-spherical surface.There is second lens L32 negative refractive power to be made up of plastic material, and its thing side S34 is that convex surface image side surface S35 is
Concave surface, thing side S34 and image side surface S35 is all non-spherical surface.3rd lens L33 has positive refractive power by plastic material system
Into its thing side S36 is that concave surface image side surface S37 is convex surface, and thing side S36 and image side surface S37 is all non-spherical surface.4th is saturating
There is mirror L34 negative refractive power to be made up of plastic material, and its thing side S38 is that concave surface image side surface S39 is convex surface, thing side S38 with
Image side surface S39 is all non-spherical surface.There is 5th lens L35 negative refractive power to be made up of plastic material, and its thing side S310 is
Concave surface image side surface S311 is convex surface, and thing side S310 and image side surface S311 is all non-spherical surface.6th lens L36, which has, just to bend
Luminous power is made up of plastic material, and its thing side S312 is that convex surface image side surface S313 is concave surface, thing side S312 and image side surface S313
It is all non-spherical surface.Its thing side S314 of optical filter OF3 and image side surface S315 is all plane.
In addition, to enable the imaging lens of the present invention to keep good optical property, the imaging lens 3 in 3rd embodiment
Six conditions under need to meeting：
0.8104≤f3/TTL3≤0.8201 (13)
0.1357≤|(R341-R342)/(R341+R342)|+|(R361-R362)/(R361+R362)|≤0.1694 (14)
-0.4290≤f3123/f3456≤-0.4127 (15)
-14.8795≤f34/f3≤-11.913 (16)
-2.7543≤f35/f3≤-2.2539 (17)
9.0882≤f36/f3≤63.4223 (18)
Wherein, f3 is the effective focal length of imaging lens 3, and TTL3 is the first lens L31 thing side S32 to imaging surface IMA3
Distance on optical axis OA3, R341For the 4th lens L34 thing side S38 radius of curvature, R342For the 4th lens L34 picture
Side S39 radius of curvature, R361For the 6th lens L36 thing side S312 radius of curvature, R362For the 6th lens L36's
Image side surface S313 radius of curvature, f3123Combination for the first lens L31, the second lens L32 and the 3rd lens L33 is effectively burnt
Away from f3456For the 4th lens L34, the 5th lens L35 and the 6th lens L36 combination effective focal length, f34For the 4th lens L34
Effective focal length, f35For the 5th lens L35 effective focal length, f36For the 6th lens L36 effective focal length.
Utilize said lens and aperture ST3 design so that imaging lens 3 can effectively shorten camera lens total length, improve
Visual angle, effectively correct aberration, lifting resolution of lens.
Table five is the relevant parameter table of each lens of imaging lens 3 in Fig. 5, and the data of table five show the imaging lens of the present embodiment
First 3 effective focal length is equal to 4.179mm, f-number is equal to 2.2, visual angle and is equal to 5.157mm equal to 69.1 °, camera lens total length.
Table five
Obtained by the non-spherical surface depression degree z of each lens is by following equation in table five：
Z=ch2/{1+[1-(k+1)c2h2]1/2}+Ah4+Bh6+Ch8+Dh10+Eh12+Fh14+Gh16
Wherein：
c：Curvature；
h：Lens surface any point to optical axis vertical range；
k：Circular cone coefficient；
A~G：Asphericity coefficient.
Table six is the relevant parameter table of the non-spherical surface of each lens in table five, and wherein k is circular cone coefficient (Conic
Constant), A~G is asphericity coefficient.
Table six
Its effective focal length of the imaging lens 3 of 3rd embodiment f3=4.179mm, the first lens L31 thing side S32 into
As camera lens face IMA3 is in the thing side S38 of distance TTL3=5.157mm, the 4th lens L34 on optical axis OA3 radius of curvature
R341=-3.80604mm, the 4th lens L34 image side surface S39 radius of curvature R 342=-4.51819mm, the 6th lens L36
Thing side S312 radius of curvature R 361=2.23621mm, the 6th lens L36 image side surface S313 radius of curvature R 362=
1.89031mm, the first lens L31, the second lens L32 and the 3rd lens L33 combination effective focal length f3123=3.3528mm, the
Four lens L34, the 5th lens L35 and the 6th lens L36 combination effective focal length f3456=-8.1241mm, the 4th lens L34's
Effective focal length f34=-52.4200mm, the 5th lens L35 effective focal length f35=-11.51063mm, the 6th lens L36's has
Imitate focal length f36=265.05399mm, by above-mentioned data can obtain f3/TTL3=0.8104, | (R341-R342)/(R341+R342)|
+|(R361-R362)/(R361+R362) |=0.1649, f3123/f3456=-0.4127, f34/ f3=-12.5431, f35/ f3=-
2.7543、f36/ f3=63.4223, it can all meet requirement of the above-mentioned condition (13) to condition (18).
In addition, the optical property of the imaging lens 3 of 3rd embodiment also can reach requirement, this can find out from Fig. 6 A to 6C.
It is longitudinal spherical aberration (the Longitudinal Spherical of the imaging lens 3 of 3rd embodiment shown in Fig. 6 A
Aberration) figure.It is the astigmatism curvature of field (the Astigmatic Field of the imaging lens 3 of 3rd embodiment shown in Fig. 6 B
Curves) figure.It is distortion (Distortion) figure of the imaging lens 3 of 3rd embodiment shown in Fig. 6 C.
Can be seen that by Fig. 6 A, the imaging lens 3 of 3rd embodiment be to wavelength 435.8400nm, 546.0700nm,
Longitudinal spherical aberration value caused by 656.2800nm light is between 0.000mm between 0.038mm.By Fig. 6 B (sagitta of arc in figure
Three lines in direction almost overlap, and three lines of meridian direction also almost overlap, so that seeming only two-lines) it can see
Go out, the imaging lens 3 of 3rd embodiment are to the light that wavelength is 435.8400nm, 546.0700nm, 656.2800nm, in meridian
(Tangential) the astigmatism curvature of field in direction and the sagitta of arc (Sagittal) direction between -0.025 ㎜ between 0.025 ㎜.By scheming
6C (three lines in figure almost overlap, so that seeming an only line) can be seen that the imaging lens 3 of 3rd embodiment are right
Wavelength is distortion caused by 435.8400nm, 546.0700nm, 656.2800nm light between 0% to 2.1%.It is aobvious
See that the longitudinal spherical aberration, the astigmatism curvature of field, distortion of the imaging lens 3 of 3rd embodiment can be corrected effectively, so as to obtain preferably
Optical property.
In above-described embodiment, the first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens
Thing side and image side surface are all non-spherical surface, however it is understood that arriving, if the first lens, the second lens, the 3rd lens, the 4th
It is non-spherical surface that each lens of lens, the 5th lens and the 6th lens, which are changed at least one side, should also be belonged to the scope of the present invention.
Although the present invention is disclosed above with preferred embodiment, it is not limited to the present invention, the technology of this area
Personnel, without departing from the spirit and scope of the present invention, it can still make a little change and retouching, therefore protection scope of the present invention
It is defined when depending on claim institute defender.
Claims (10)
1. a kind of imaging lens, it is characterised in that sequentially include along optical axis from thing side to image side：
First lens, first lens are that biconvex lens has positive refractive power；
Second lens, second lens be meniscus shaped lens there is negative refractive power, second lens it is recessed convex surface facing the thing side
Facing to the image side；
3rd lens, the 3rd lens have positive refractive power and including convex surfaces, should be convex surface facing the image side；
4th lens, the 4th lens are that meniscus shaped lens has a negative refractive power, and the concave surface of the 4th lens is convex towards the thing side
Facing to the image side；
5th lens, the 5th lens are that meniscus shaped lens has a negative refractive power, and the concave surface of the 5th lens is convex towards the thing side
Facing to the image side；And
6th lens, the 6th lens are that meniscus shaped lens has a positive refractive power, the 6th lens it is recessed convex surface facing the thing side
Facing to the image side.
2. imaging lens as claimed in claim 1, it is characterised in that the imaging lens meet following condition：
0.8104≤f/TTL≤0.8201
Wherein, f be the imaging lens effective focal length, TTL be first lens thing side surface to imaging surface on the optical axis
Distance.
3. imaging lens as claimed in claim 1, it is characterised in that the 4th lens and the 6th lens meet following article
Part：
0.1357≤|(R41-R42)/(R41+R42)|+|(R61-R62)/(R61+R62)|≤0.1694
Wherein, R41 is the radius of curvature of the thing side of the 4th lens, and R42 is the radius of curvature of the image side surface of the 4th lens,
R61 is the radius of curvature of the thing side of the 6th lens, and R62 is the radius of curvature of the image side surface of the 6th lens.
4. imaging lens as claimed in claim 1, it is characterised in that first lens, second lens, the 3rd lens,
4th lens, the 5th lens and the 6th lens meet following condition：
-0.4290≤f123/f456≤-0.4127
Wherein, f123 is the combination effective focal length of first lens, second lens and the 3rd lens, and f456 is the 4th
The combination effective focal length of lens, the 5th lens and the 6th lens.
5. imaging lens as claimed in claim 1, it is characterised in that the 4th lens meet following condition：
-14.8795≤f4/f≤-11.913
Wherein, f4 is the effective focal length of the 4th lens, and f is the effective focal length of the imaging lens.
6. imaging lens as claimed in claim 1, it is characterised in that the 5th lens meet following condition：
-2.7543≤f5/f≤-2.2539
Wherein, f5 is the effective focal length of the 5th lens, and f is the effective focal length of the imaging lens.
7. imaging lens as claimed in claim 1, it is characterised in that the 6th lens meet following condition：
9.0882≤f6/f≤63.4223
Wherein, f6 is the effective focal length of the 6th lens, and f is the effective focal length of the imaging lens.
8. imaging lens as claimed in claim 1, it is characterised in that first lens, second lens, the 3rd lens,
Each lens at least one side of 4th lens, the 5th lens and the 6th lens is non-spherical surface or two faces are all
Non-spherical surface.
9. imaging lens as claimed in claim 1, it is characterised in that the 6th lens are made up of plastic material.
10. imaging lens as claimed in claim 1, it is characterised in that further include aperture, it is first saturating with this to be arranged at the thing side
Between mirror.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410529850.0A CN105572839B (en) | 2014-10-09 | 2014-10-09 | Imaging lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410529850.0A CN105572839B (en) | 2014-10-09 | 2014-10-09 | Imaging lens |
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| CN105572839A CN105572839A (en) | 2016-05-11 |
| CN105572839B true CN105572839B (en) | 2017-12-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065134B (en) * | 2017-03-21 | 2020-11-10 | 惠州市星聚宇光学有限公司 | High-pixel ultrathin mobile phone lens group and imaging system |
| CN106772955A (en) * | 2017-03-21 | 2017-05-31 | 惠州市星聚宇光学有限公司 | A kind of portable high-definition camera module lens group and imaging system |
| CN106842509B (en) * | 2017-03-21 | 2020-11-10 | 惠州市星聚宇光学有限公司 | Miniature and high-definition imaging lens group and imaging system |
| CN106802473A (en) * | 2017-03-21 | 2017-06-06 | 惠州市星聚宇光学有限公司 | A kind of ultrahigh resolution ultra thin optical lens group and imaging system |
| CN106772956A (en) * | 2017-03-23 | 2017-05-31 | 惠州市星聚宇光学有限公司 | One kind miniaturization high resolution aspheric lens group and imaging system |
| CN106802475B (en) * | 2017-03-23 | 2020-11-10 | 惠州市星聚宇光学有限公司 | Miniaturized large-aperture high-resolution lens group and imaging system |
| CN107065136B (en) * | 2017-03-23 | 2020-11-10 | 惠州市星聚宇光学有限公司 | Small-size high-imaging-quality lens group and imaging system |
| CN109239890B (en) | 2018-09-29 | 2019-11-05 | 江西联益光学有限公司 | Micro pick-up lens |
| WO2021134707A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳市大疆创新科技有限公司 | Optical viewfinder and camera |
| JP6861319B1 (en) * | 2020-10-26 | 2021-04-21 | エーエーシー オプティックス ソリューションズ ピーティーイー リミテッド | Imaging lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI431312B (en) * | 2011-06-28 | 2014-03-21 | Largan Precision Co Ltd | Optical image capturing lens assembly |
| JP5963040B2 (en) * | 2012-03-19 | 2016-08-03 | 株式会社リコー | Imaging lens, imaging device, and information device |
| JP5963360B2 (en) * | 2012-11-21 | 2016-08-03 | カンタツ株式会社 | Imaging lens |
| TWI463168B (en) * | 2013-05-30 | 2014-12-01 | Largan Precision Co Ltd | Imaging lens system and image capturing device |
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