CN105629433A - Thin lens - Google Patents
Thin lens Download PDFInfo
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- CN105629433A CN105629433A CN201410620745.8A CN201410620745A CN105629433A CN 105629433 A CN105629433 A CN 105629433A CN 201410620745 A CN201410620745 A CN 201410620745A CN 105629433 A CN105629433 A CN 105629433A
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- lens
- camera lens
- slim camera
- slim
- spherical surface
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Abstract
A thin lens includes a first lens, a second lens and a third lens in sequence front an object side to an image side along an optical axis, and the first lens, the second lens and the third lens have a same Abbe Number.
Description
Technical field
The present invention is related to a kind of camera lens, in particular to a kind of slim camera lens.
Background technology
The three-chip type framework camera lens being currently known, in order to shorten camera lens total length, mostly adopts the design of two panels high dispersive power material lens and a piece of low dispersive power material lens. But being as electronic product constantly toward miniaturization, the camera lens wherein used also needs further shortening camera lens total length.
Summary of the invention
The technical problem to be solved in the present invention is in that, need to shorten the defect of camera lens total length further for camera lens of the prior art, it is provided that a kind of slim camera lens, can further shorten camera lens total length.
The present invention solves that its technical problem be employed technical scheme comprise that, a kind of slim camera lens is provided, sequentially including the first lens, the second lens and the 3rd lens along optical axis from thing side to image side, the first lens, the second lens and the 3rd lens have identical Abbe number (AbbeNumber).
Wherein the first lens are convexoconcave lens, the first lens convex surface facing thing side concave surface towards image side.
Wherein the second lens are meniscus, and the concave surface of the second lens is towards thing side convex surface facing image side.
Wherein the 3rd lens are convexoconcave lens, the 3rd lens convex surface facing thing side concave surface towards image side.
Wherein the first lens at least one side is all non-spherical surface for non-spherical surface or two faces.
Wherein the second lens at least one side is all non-spherical surface for non-spherical surface or two faces.
Wherein the 3rd lens at least one side is all non-spherical surface for non-spherical surface or two faces.
Wherein the first lens, the second lens and the 3rd lens are made up of plastic material.
Wherein the Abbe number (AbbeNumber) of the first lens, the second lens and the 3rd lens is between 50 to 60.
The slim camera lens of the present invention can more include aperture, is arranged between thing side and the first lens.
Implementing the slim camera lens of the present invention, have the advantages that in slim camera lens, all of lens all use identical dispersive power material to make, to reach the purpose of slimming design, but still have good optical property, image resolution also can meet requirement.
Accompanying drawing explanation
For making the above-mentioned purpose of the present invention, feature and advantage to become apparent, preferred embodiment cited below particularly also coordinates institute's accompanying drawings to elaborate.
Fig. 1 is based on lens configuration and the light path schematic diagram of an embodiment of the slim camera lens of the present invention.
Fig. 2 A is the curvature of field figure of the slim camera lens of Fig. 1.
Fig. 2 B is the distortion figure of the slim camera lens of Fig. 1.
Fig. 2 C is the modulation transfer function figure of the slim camera lens of Fig. 1.
Detailed description of the invention
Refer to lens configuration and the light path schematic diagram of an embodiment that Fig. 1, Fig. 1 are based on the slim camera lens of the present invention. Slim camera lens 1 sequentially includes aperture ST, the first lens L1, the second lens L2, the 3rd lens L3 and optical filter OF along optical axis OA from thing side to image side. During imaging, the light from thing side finally images on imaging surface IMA. First lens L1 is that convexoconcave lens is made up of plastic material, and its thing side S2 is convex surface, and image side surface S3 is concave surface, and thing side S2 and image side surface S3 is all non-spherical surface. Second lens L2 is that meniscus is made up of plastic material, and its thing side S4 is concave surface image side surface S5 is convex surface, and thing side S4 and image side surface S5 is all non-spherical surface. 3rd lens L3 is that convexoconcave lens is made up of plastic material, and its thing side S6 is convex surface image side surface S7 is concave surface, and thing side S6 and image side surface S7 is all non-spherical surface. Optical filter OF, its thing side S8 and image side surface S9 are all plane.
For making the slim camera lens of the present invention can further shorten camera lens total length, to reach the purpose of slimming, the first lens L1 of the slim camera lens 1 of the present embodiment, the second lens L2 and the 3rd lens L3 are all made up of the plastic material with identical Abbe number (AbbeNumber).
Utilize the design of said lens and aperture ST so that slim camera lens 1 can further shorten camera lens total length, revise aberration, keeps good optical property, and image resolution also can meet requirement.
Table one is the relevant parameter table of each lens of slim camera lens 1 in Fig. 1, table one data show the effective focal length of the slim camera lens 1 of the present embodiment equal to 0.84mm, f-number equal to 2.2, visual angle equal to 60.0 ��, the first lens L1, the second lens L2 and the 3rd lens L3 Abbe number (AbbeNumber) all equal to 56.1.
Table one
In table one, the non-spherical surface depression degree z of each lens is obtained by following equation:
Z=ch2/{1+[1-(k+1)c2h2]1/2}+Ah4+Bh6+Ch8+Dh10+Eh12+Fh14+Gh16
Wherein:
C: curvature;
H: lens surface any point is to the vertical dimension of optical axis;
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 (ConicConstant), A��G is asphericity coefficient.
Table two
It addition, the optical property of the slim camera lens 1 of the present embodiment also can reach requirement, this can find out from Fig. 2 A to 2C. Shown in Fig. 2 A, it is the curvature of field (FieldCurvature) figure of the slim camera lens 1 of the present embodiment. Shown in Fig. 2 B, it is distortion (Distortion) figure of the slim camera lens 1 of the present embodiment. Shown in Fig. 2 C, it it is modulation transfer function figure (ModulationTransferFunction) of the slim camera lens 1 of the present embodiment.
Being can be seen that by Fig. 2 A, wavelength is that meridian (Tangential) direction and the sagitta of arc (Sagittal) the direction curvature of field produced by the light of 0.470 ��m, 0.510 ��m, 0.555 ��m, 0.610 ��m, 0.650 ��m are between-0.04 to 0.01 by the slim camera lens 1 of the present embodiment. Being can be seen that by Fig. 2 B, wavelength is distort between 0.0% to 2.2% produced by the light of 0.470 ��m, 0.510 ��m, 0.555 ��m, 0.610 ��m, 0.650 ��m by the slim camera lens 1 of the present embodiment. Be can be seen that by Fig. 2 C, the slim camera lens 1 of the present embodiment is to the wave-length coverage light between 0.470 ��m to 0.650 ��m, respectively at meridian (Tangential) direction and the sagitta of arc (Sagittal) direction, field height is 0.0000mm, 0.2640mm, 0.5280mm, 0.6600mm respectively, spatial frequency between the modulation transfer function value of 0lp/mm to 315lp/mm between 0.05 to 1.0. The curvature of field of the slim camera lens 1 of obvious the present embodiment, distortion can effectively be revised, and image resolution also can meet requirement, thus obtaining preferably optical property.
In above-described embodiment, the thing side of the first lens, the second lens and the 3rd lens and image side surface are all non-spherical surface, however it is understood that, if it is non-spherical surface that the part lens in the first lens, the second lens and the 3rd lens or all lens change at least one side into, scope of the invention also should be belonged to.
In above-described embodiment, the Abbe number (AbbeNumber) of the first lens, the second lens and the 3rd lens is all equal to 56.1, however it is understood that, if the first lens, the second lens and the 3rd lens change into Abbe number (AbbeNumber) equal to 50 to 60 between and all equal material of Abbe number (AbbeNumber), also should belong to scope of the invention.
Although the present invention is disclosed above with preferred embodiment; but it is not limited to the present invention, those skilled in the art, without departing from the spirit and scope of the present invention; still can doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on as defined in claim.
Claims (10)
1. a slim camera lens, it is characterised in that sequentially include from thing side to image side along optical axis:
First lens;
Second lens; And
3rd lens;
Wherein these first lens, these second lens and the 3rd lens have identical Abbe number.
2. slim camera lens as claimed in claim 1, it is characterised in that these first lens are convexoconcave lens, these the first lens convex surface facing this thing side, concave surface is towards this image side.
3. slim camera lens as claimed in claim 1, it is characterised in that these second lens are meniscus, the concave surface of these the second lens is towards this thing side, convex surface facing this image side.
4. slim camera lens as claimed in claim 1, it is characterised in that the 3rd lens are convexoconcave lens, the 3rd lens convex surface facing this thing side, concave surface is towards this image side.
5. slim camera lens as claimed in claim 1, it is characterised in that these first lens at least one side is all non-spherical surface for non-spherical surface or two faces.
6. slim camera lens as claimed in claim 1, it is characterised in that these second lens at least one side is all non-spherical surface for non-spherical surface or two faces.
7. slim camera lens as claimed in claim 1, it is characterised in that the 3rd lens at least one side is all non-spherical surface for non-spherical surface or two faces.
8. slim camera lens as claimed in claim 1, it is characterised in that these first lens, these second lens and the 3rd lens are made up of plastic material.
9. slim camera lens as claimed in claim 1, it is characterised in that the Abbe number of these first lens, these second lens and the 3rd lens is between 50 to 60.
10. slim camera lens as claimed in claim 1, it is characterised in that more include aperture, is arranged between this thing side and this first lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410620745.8A CN105629433A (en) | 2014-11-05 | 2014-11-05 | Thin lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410620745.8A CN105629433A (en) | 2014-11-05 | 2014-11-05 | Thin lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105629433A true CN105629433A (en) | 2016-06-01 |
Family
ID=56044535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410620745.8A Pending CN105629433A (en) | 2014-11-05 | 2014-11-05 | Thin lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105629433A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515179A (en) * | 2019-08-16 | 2019-11-29 | 瑞声通讯科技(常州)有限公司 | Camera optical camera lens |
| CN111077642A (en) * | 2019-12-23 | 2020-04-28 | 瑞声通讯科技(常州)有限公司 | Image pickup optical lens |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478702A (en) * | 2010-11-24 | 2012-05-30 | 大立光电股份有限公司 | Thin optical system |
| TWM462376U (en) * | 2013-05-10 | 2013-09-21 | Ability Opto Electronics Technology Co Ltd | Three sheets type imaging mirror head module |
-
2014
- 2014-11-05 CN CN201410620745.8A patent/CN105629433A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478702A (en) * | 2010-11-24 | 2012-05-30 | 大立光电股份有限公司 | Thin optical system |
| TWM462376U (en) * | 2013-05-10 | 2013-09-21 | Ability Opto Electronics Technology Co Ltd | Three sheets type imaging mirror head module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515179A (en) * | 2019-08-16 | 2019-11-29 | 瑞声通讯科技(常州)有限公司 | Camera optical camera lens |
| CN111077642A (en) * | 2019-12-23 | 2020-04-28 | 瑞声通讯科技(常州)有限公司 | Image pickup optical lens |
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Application publication date: 20160601 |