CN113848633A - Camera lens - Google Patents
Camera lens Download PDFInfo
- Publication number
- CN113848633A CN113848633A CN202111372337.1A CN202111372337A CN113848633A CN 113848633 A CN113848633 A CN 113848633A CN 202111372337 A CN202111372337 A CN 202111372337A CN 113848633 A CN113848633 A CN 113848633A
- Authority
- CN
- China
- Prior art keywords
- lens
- light
- close
- imaging
- camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003384 imaging method Methods 0.000 claims abstract description 190
- 230000003287 optical effect Effects 0.000 claims abstract description 43
- 230000004075 alteration Effects 0.000 description 38
- 201000009310 astigmatism Diseases 0.000 description 14
- 238000010586 diagram Methods 0.000 description 8
- 230000035945 sensitivity Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 235000013312 flour Nutrition 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- 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
- G02B13/0045—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 five or more lenses
-
- 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
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The present invention provides a camera lens, including: the surface of the first lens, which is close to the light incidence side of the camera lens, is a convex surface; a second lens having an optical power; the surface of the third lens, which is close to the light inlet side, is a concave surface, and the surface of the third lens, which is close to the light outlet side of the camera lens, is a convex surface; the surface of the fourth lens, which is close to the light incidence side, is a convex surface; the surface of the fifth lens, which is close to the light-emitting side, is a concave surface; the surface of the sixth lens, which is close to the light-emitting side, is a concave surface; the imaging surface of the camera lens meets the requirement between the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens and the effective focal length f of the camera lens: 0.6< ImgH/f < 1.6. The invention solves the problem of poor imaging quality of the camera lens in the prior art.
Description
Technical Field
The invention relates to the technical field of optical imaging equipment, in particular to a camera lens.
Background
With the continuous upgrading of the camera shooting effect of each terminal, the optical lens matched with the electronic photosensitive element is also continuously upgraded and updated. Mobile phone manufacturers have raised higher requirements for various performances of the lens design process, and the camera lens in the prior art is difficult to meet the requirements of the mobile phone manufacturers on the imaging quality.
That is to say, the imaging lens in the prior art has the problem of poor imaging quality.
Disclosure of Invention
The invention mainly aims to provide a camera lens to solve the problem of poor imaging quality of the camera lens in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided an imaging lens comprising: the surface of the first lens, which is close to the light incidence side of the camera lens, is a convex surface; a second lens having an optical power; the surface of the third lens, which is close to the light inlet side, is a concave surface, and the surface of the third lens, which is close to the light outlet side of the camera lens, is a convex surface; the surface of the fourth lens, which is close to the light incidence side, is a convex surface; the surface of the fifth lens, which is close to the light-emitting side, is a concave surface; the surface of the sixth lens, which is close to the light-emitting side, is a concave surface; the imaging surface of the camera lens meets the requirement between the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens and the effective focal length f of the camera lens: 0.6< ImgH/f < 1.6.
Further, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens satisfy that: 0.7< f1/f5< 1.8.
Further, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 0.8< f3/f4< 2.7.
Further, the curvature radius R5 of the surface of the third lens close to the light inlet side and the curvature radius R6 of the surface of the third lens close to the light outlet side satisfy that: 0.8< (R5+ R6)/(R5-R6) < 3.0.
Further, the effective focal length f of the image pickup lens and the curvature radius R10 of the surface of the fifth lens close to the light-emitting side satisfy that: 0.6< f/R10< 2.0.
Further, the refractive index N2 of the second lens and the refractive index N5 of the fifth lens satisfy that: 3.2< N2+ N5< 3.6.
Further, an on-axis distance TTL from a surface of the first lens close to the light incident side to the imaging surface and an on-axis distance SL from a diaphragm of the camera lens to the imaging surface satisfy: 1.1< TTL/SL < 1.6.
Further, the combined focal length f23 of the second lens and the third lens and the combined focal length f45 of the fourth lens and the fifth lens satisfy: 0< f23/f45< 2.2.
Further, the on-axis distance SAG42 between the intersection point of the surface of the fourth lens close to the light-emitting side and the optical axis and the effective radius vertex of the surface of the fourth lens close to the light-emitting side, and the on-axis distance SAG32 between the intersection point of the surface of the third lens close to the light-emitting side and the optical axis and the effective radius vertex of the surface of the third lens close to the light-emitting side satisfy: 0.8< SAG42/SAG32< 2.1.
Further, the on-axis distance SAG11 from the intersection point of the surface of the first lens close to the light inlet side and the optical axis to the effective radius vertex of the surface of the first lens close to the light inlet side, and the on-axis distance SAG52 from the intersection point of the surface of the fifth lens close to the light outlet side and the optical axis to the effective radius vertex of the surface of the fifth lens close to the light outlet side satisfy: 0< SAG11/SAG52< 0.7.
Further, an air interval T12 of the first lens and the second lens on the optical axis, and an air interval T56 of the fifth lens and the sixth lens on the optical axis satisfy: 0.2< T12/T56< 3.0.
Further, the edge thickness ET1 of the first lens, the edge thickness ET4 of the fourth lens and the edge thickness ET5 of the fifth lens satisfy: 0.8< (ET1+ ET4)/ET5< 1.9.
According to another aspect of the present invention, there is provided an imaging lens including: the surface of the first lens, which is close to the light incidence side of the camera lens, is a convex surface; a second lens having an optical power; the surface of the third lens, which is close to the light inlet side, is a concave surface, and the surface of the third lens, which is close to the light outlet side of the camera lens, is a convex surface; the surface of the fourth lens, which is close to the light incidence side, is a convex surface; the surface of the fifth lens, which is close to the light-emitting side, is a concave surface; the surface of the sixth lens, which is close to the light-emitting side, is a concave surface; wherein, the air interval T12 between the first lens and the second lens on the optical axis, and the air interval T56 between the fifth lens and the sixth lens on the optical axis satisfy: 0.2< T12/T56< 3.0.
Further, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens satisfy that: 0.7< f1/f5< 1.8.
Further, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 0.8< f3/f4< 2.7.
Further, the curvature radius R5 of the surface of the third lens close to the light inlet side and the curvature radius R6 of the surface of the third lens close to the light outlet side satisfy that: 0.8< (R5+ R6)/(R5-R6) < 3.0.
Further, the effective focal length f of the image pickup lens and the curvature radius R10 of the surface of the fifth lens close to the light-emitting side satisfy that: 0.6< f/R10< 2.0.
Further, the refractive index N2 of the second lens and the refractive index N5 of the fifth lens satisfy that: 3.2< N2+ N5< 3.6.
Further, an on-axis distance TTL from a surface of the first lens close to the light incident side to the imaging surface and an on-axis distance SL from a diaphragm of the camera lens to the imaging surface satisfy: 1.1< TTL/SL < 1.6.
Further, the combined focal length f23 of the second lens and the third lens and the combined focal length f45 of the fourth lens and the fifth lens satisfy: 0< f23/f45< 2.2.
Further, the on-axis distance SAG42 between the intersection point of the surface of the fourth lens close to the light-emitting side and the optical axis and the effective radius vertex of the surface of the fourth lens close to the light-emitting side, and the on-axis distance SAG32 between the intersection point of the surface of the third lens close to the light-emitting side and the optical axis and the effective radius vertex of the surface of the third lens close to the light-emitting side satisfy: 0.8< SAG42/SAG32< 2.1.
Further, the on-axis distance SAG11 from the intersection point of the surface of the first lens close to the light inlet side and the optical axis to the effective radius vertex of the surface of the first lens close to the light inlet side, and the on-axis distance SAG52 from the intersection point of the surface of the fifth lens close to the light outlet side and the optical axis to the effective radius vertex of the surface of the fifth lens close to the light outlet side satisfy: 0< SAG11/SAG52< 0.7.
Further, the edge thickness ET1 of the first lens, the edge thickness ET4 of the fourth lens and the edge thickness ET5 of the fifth lens satisfy: 0.8< (ET1+ ET4)/ET5< 1.9.
By applying the technical scheme of the invention, the camera lens comprises a first lens with negative focal power, a second lens with focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with negative focal power and a sixth lens with focal power, wherein the surface of the first lens, which is close to the light incidence side of the camera lens, is a convex surface; the surface of the third lens, which is close to the light inlet side, is a concave surface, and the surface of the third lens, which is close to the light outlet side of the camera lens, is a convex surface; the surface of the fourth lens close to the light incidence side is a convex surface; the surface of the fifth lens close to the light emergent side is a concave surface; the surface of the sixth lens close to the light emergent side is a concave surface; the imaging surface of the camera lens meets the requirement between the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens and the effective focal length f of the camera lens: 0.6< ImgH/f < 1.6.
Through the distribution of positive and negative of the focal power of each lens of the camera lens of reasonable control, can effectual balance camera lens's low order aberration, can reduce camera lens's tolerance sensitivity simultaneously, guarantee camera lens's image quality when keeping camera lens's miniaturization. The ImgH/f is limited within a reasonable range, the detectable range of the camera lens can be enlarged while the imaging quality of the camera lens is ensured, the volume of the whole camera lens is reduced, the matching performance of the camera lens and a chip is enhanced, and the color deviation of the camera lens is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view showing a configuration of an imaging lens according to a first example of the present invention;
fig. 2 to 5 respectively show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the imaging lens in fig. 1;
fig. 6 is a schematic view showing a configuration of an imaging lens according to a second example of the present invention;
fig. 7 to 10 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens in fig. 6;
fig. 11 is a schematic view showing a configuration of an imaging lens according to a third example of the present invention;
fig. 12 to 15 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens in fig. 11;
fig. 16 is a schematic view showing a configuration of an imaging lens of example four of the present invention;
fig. 17 to 20 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens in fig. 16;
fig. 21 is a schematic view showing a configuration of an imaging lens of example five of the present invention;
fig. 22 to 25 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens in fig. 21;
fig. 26 is a schematic diagram showing a configuration of an imaging lens of example six of the present invention;
fig. 27 to 30 show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens in fig. 26;
fig. 31 is a schematic view showing a configuration of an imaging lens of example seven of the present invention;
fig. 32 to 35 show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve of the imaging lens in fig. 31, respectively.
Wherein the figures include the following reference numerals:
STO, stop; e1, first lens; s1, the surface of the first lens close to the light incidence side; s2, the surface of the first lens close to the light-emitting side; e2, second lens; s3, the surface of the second lens close to the light incidence side; s4, the surface of the second lens close to the light-emitting side; e3, third lens; s5, the surface of the third lens close to the light incidence side; s6, the surface of the third lens close to the light-emitting side; e4, fourth lens; s7, the surface of the fourth lens close to the light incidence side; s8, the surface of the fourth lens close to the light-emitting side; e5, fifth lens; s9, the surface of the fifth lens close to the light incidence side; s10, the surface of the fifth lens close to the light-emitting side; e6, sixth lens; s11, the surface of the sixth lens close to the light incidence side; s12, the surface of the sixth lens close to the light-emitting side; e7 filter plate; s13, the surface of the filter close to the light incident side; s16, enabling the filter to be close to the surface of the light emergent side; and S17, imaging surface.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens close to the object side becomes the surface of the lens close to the light inlet side, and the surface of each lens close to the image side is called the surface of the lens close to the light outlet side. The determination of the surface shape in the paraxial region can be performed by determining whether or not the surface shape is concave or convex, based on the R value (R denotes the radius of curvature of the paraxial region, and usually denotes the R value in a lens database (lens data) in optical software) in accordance with the determination method of a person ordinarily skilled in the art. For the object side surface, when the R value is positive, the object side surface is judged to be convex, and when the R value is negative, the object side surface is judged to be concave; in the case of the image side surface, the image side surface is determined to be concave when the R value is positive, and is determined to be convex when the R value is negative.
The invention provides a camera lens, aiming at solving the problem of poor imaging quality of the camera lens in the prior art.
Example one
As shown in fig. 1 to 35, the image pickup lens includes a first lens having negative refractive power, a second lens having refractive power, a third lens having positive refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, and a sixth lens having refractive power, and a surface of the first lens on the light incident side of the image pickup lens is a convex surface; the surface of the third lens, which is close to the light inlet side, is a concave surface, and the surface of the third lens, which is close to the light outlet side of the camera lens, is a convex surface; the surface of the fourth lens close to the light incidence side is a convex surface; the surface of the fifth lens close to the light emergent side is a concave surface; the surface of the sixth lens close to the light emergent side is a concave surface; the imaging surface of the camera lens meets the requirement between the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens and the effective focal length f of the camera lens: 0.6< ImgH/f < 1.6.
Through the distribution of positive and negative of the focal power of each lens of the camera lens of reasonable control, can effectual balance camera lens's low order aberration, can reduce camera lens's tolerance sensitivity simultaneously, guarantee camera lens's image quality when keeping camera lens's miniaturization. The ImgH/f is limited within a reasonable range, the detectable range of the camera lens can be enlarged while the imaging quality of the camera lens is ensured, the volume of the whole camera lens is reduced, the matching performance of the camera lens and a chip is enhanced, and the color deviation of the camera lens is reduced.
Preferably, a half ImgH of a diagonal length of the effective pixel area on the imaging surface of the imaging lens satisfies an effective focal length f of the imaging lens: 0.7< ImgH/f < 1.2.
In the present embodiment, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens satisfy: 0.7< f1/f5< 1.8. By limiting f1/f5 within a reasonable range, the field angle of the camera lens can be increased, the aberration of the camera lens is improved, and the imaging effect of the camera lens is improved. Preferably 0.8< f1/f5< 1.7.
In the present embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 0.8< f3/f4< 2.7. By limiting f3/f4 to a reasonable range, the deflection angle of light rays on the lens can be slowed, and the sensitivity of the lens is reduced, preferably 0.9< f3/f4< 2.6.
In the present embodiment, a curvature radius R5 of a surface of the third lens on the light incident side and a curvature radius R6 of a surface of the third lens on the light exit side satisfy: 0.8< (R5+ R6)/(R5-R6) < 3.0. Through restricting (R5+ R6)/(R5-R6) in reasonable within range, can slow down the angle of deflection on the lens, be favorable to continuing to increase luminous flux to improve the shooting effect under the dim environment, guarantee camera lens's image quality. Preferably, 0.9< (R5+ R6)/(R5-R6) < 2.95.
In the present embodiment, the effective focal length f of the imaging lens and the radius of curvature R10 of the surface of the fifth lens on the light exit side satisfy: 0.6< f/R10< 2.0. By limiting the f/R10 within a reasonable range, the aberration of the camera lens is favorably reduced, and the imaging quality of the camera lens is improved. Preferably 0.7< f/R10< 1.9.
In the present embodiment, the refractive index N2 of the second lens and the refractive index N5 of the fifth lens satisfy: 3.2< N2+ N5< 3.6. By limiting the N2+ N5 within a reasonable range, the imaging effect of the camera lens can be effectively improved, and the imaging quality of the camera lens is greatly improved. Preferably 3.2< N2+ N5< 3.5.
In this embodiment, an on-axis distance TTL from a surface of the first lens closer to the light incident side to the imaging plane and an on-axis distance SL from a diaphragm of the imaging lens to the imaging plane satisfy: 1.1< TTL/SL < 1.6. By limiting TTL/SL within a reasonable range, the aperture of a lens in front of a diaphragm is reduced, the miniaturization of the camera lens is ensured, and the field angle of the camera lens is increased, so that the camera lens can observe a wider range. Preferably, 1.2< TTL/SL < 1.5.
In the present embodiment, the combined focal length f23 of the second lens and the third lens, and the combined focal length f45 of the fourth lens and the fifth lens satisfy: 0< f23/f45< 2.2. By limiting f23/f45 within a reasonable range, the focal length of the lens can be reasonably distributed, and the sensitivity of the camera lens is reduced on the basis of increasing the view field angle of the camera lens, so that the imaging quality of the camera lens is improved. Preferably, 0< f23/f45< 2.1.
In this embodiment, the on-axis distance SAG42 between the intersection point of the surface of the fourth lens close to the light exit side and the optical axis and the effective radius vertex of the surface of the fourth lens close to the light exit side, and the on-axis distance SAG32 between the intersection point of the surface of the third lens close to the light exit side and the optical axis and the effective radius vertex of the surface of the third lens close to the light exit side satisfy: 0.8< SAG42/SAG32< 2.1. By limiting SAG42/SAG32 within a reasonable range, the optical caliber of the camera lens is ensured to be uniform and excessive, so that the assembly stability is ensured, and on the other hand, the processing characteristics of the third lens and the fourth lens are ensured; preferably, 0.9< SAG42/SAG32< 2.0.
In this embodiment, the on-axis distance SAG11 from the intersection point of the surface of the first lens close to the light incident side and the optical axis to the effective radius vertex of the surface of the first lens close to the light incident side, and the on-axis distance SAG52 from the intersection point of the surface of the fifth lens close to the light exit side and the optical axis to the effective radius vertex of the surface of the fifth lens close to the light exit side satisfy: 0< SAG11/SAG52< 0.7. By limiting SAG11/SAG52 within a reasonable range, the imaging lens is ensured to have an increased field angle and a small optical aperture, and on the other hand, the processing characteristics of the first lens and the fifth lens are ensured. Preferably, 0< SAG11/SAG52< 0.6.
In the present embodiment, the air interval T12 on the optical axis between the first lens and the second lens, and the air interval T56 on the optical axis between the fifth lens and the sixth lens satisfy: 0.2< T12/T56< 3.0. By limiting the T12/T56 within a reasonable range, the view field angle of the camera lens can be effectively increased, the deflection of light rays with large incident angles is reduced, the imaging range of the camera lens can be increased, and the assembly consistency between the first five lenses and the last lens is ensured. Preferably 0.25< T12/T56< 2.9.
In the present embodiment, the edge thickness ET1 of the first lens, the edge thickness ET4 of the fourth lens, and the edge thickness ET5 of the fifth lens satisfy: 0.8< (ET1+ ET4)/ET5< 1.9. By limiting (ET1+ ET4)/ET5 within a reasonable range, the field angle of the camera lens is effectively increased, the deflection of light rays with large incidence angles is reduced, and the assembly consistency of the first five lenses is ensured. Preferably, 0.85< (ET1+ ET4)/ET5< 1.8.
Example two
As shown in fig. 1 to 35, the imaging lens includes: a first lens having a negative power, a second lens having a power; the surface of the first lens, which is close to the light incidence side of the camera lens, is a convex surface; the surface of the third lens, which is close to the light inlet side, is a concave surface, and the surface of the third lens, which is close to the light outlet side of the camera lens, is a convex surface; the surface of the fourth lens close to the light incidence side is a convex surface; the surface of the fifth lens close to the light emergent side is a concave surface; the surface of the sixth lens close to the light emergent side is a concave surface; wherein, the air interval T12 between the first lens and the second lens on the optical axis, and the air interval T56 between the fifth lens and the sixth lens on the optical axis satisfy: 0.2< T12/T56< 3.0.
Through the distribution of positive and negative of the focal power of each lens of the camera lens of reasonable control, can effectual balance camera lens's low order aberration, can reduce camera lens's tolerance sensitivity simultaneously, guarantee camera lens's image quality when keeping camera lens's miniaturization. By limiting the T12/T56 within a reasonable range, the view field angle of the camera lens can be effectively increased, the deflection of light rays with large incident angles is reduced, the imaging range of the camera lens can be increased, and the assembly consistency between the first five lenses and the last lens is ensured.
Preferably, an air interval T12 of the first lens and the second lens on the optical axis, and an air interval T56 of the fifth lens and the sixth lens on the optical axis satisfy: 0.25< T12/T56< 2.9.
In the present embodiment, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens satisfy: 0.7< f1/f5< 1.8. By limiting f1/f5 within a reasonable range, the field angle of the camera lens can be increased, the aberration of the camera lens is improved, and the imaging effect of the camera lens is improved. Preferably 0.8< f1/f5< 1.7.
In the present embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 0.8< f3/f4< 2.7. By limiting f3/f4 to a reasonable range, the deflection angle of light rays on the lens can be slowed, and the sensitivity of the lens is reduced, preferably 0.9< f3/f4< 2.6.
In the present embodiment, a curvature radius R5 of a surface of the third lens on the light incident side and a curvature radius R6 of a surface of the third lens on the light exit side satisfy: 0.8< (R5+ R6)/(R5-R6) < 3.0. Through restricting (R5+ R6)/(R5-R6) in reasonable within range, can slow down the angle of deflection on the lens, be favorable to continuing to increase luminous flux to improve the shooting effect under the dim environment, guarantee camera lens's image quality. Preferably, 0.9< (R5+ R6)/(R5-R6) < 2.95.
In the present embodiment, the effective focal length f of the imaging lens and the radius of curvature R10 of the surface of the fifth lens on the light exit side satisfy: 0.6< f/R10< 2.0. By limiting the f/R10 within a reasonable range, the aberration of the camera lens is favorably reduced, and the imaging quality of the camera lens is improved. Preferably 0.7< f/R10< 1.9.
In the present embodiment, the refractive index N2 of the second lens and the refractive index N5 of the fifth lens satisfy: 3.2< N2+ N5< 3.6. By limiting the N2+ N5 within a reasonable range, the imaging effect of the camera lens can be effectively improved, and the imaging quality of the camera lens is greatly improved. Preferably 3.2< N2+ N5< 3.5.
In this embodiment, an on-axis distance TTL from a surface of the first lens closer to the light incident side to the imaging plane and an on-axis distance SL from a diaphragm of the imaging lens to the imaging plane satisfy: 1.1< TTL/SL < 1.6. By limiting TTL/SL within a reasonable range, the aperture of a lens in front of a diaphragm is reduced, the miniaturization of the camera lens is ensured, and the field angle of the camera lens is increased, so that the camera lens can observe a wider range. Preferably, 1.2< TTL/SL < 1.5.
In the present embodiment, the combined focal length f23 of the second lens and the third lens, and the combined focal length f45 of the fourth lens and the fifth lens satisfy: 0< f23/f45< 2.2. By limiting f23/f45 within a reasonable range, the focal length of the lens can be reasonably distributed, and the sensitivity of the camera lens is reduced on the basis of increasing the view field angle of the camera lens, so that the imaging quality of the camera lens is improved. Preferably, 0< f23/f45< 2.1.
In this embodiment, the on-axis distance SAG42 between the intersection point of the surface of the fourth lens close to the light exit side and the optical axis and the effective radius vertex of the surface of the fourth lens close to the light exit side, and the on-axis distance SAG32 between the intersection point of the surface of the third lens close to the light exit side and the optical axis and the effective radius vertex of the surface of the third lens close to the light exit side satisfy: 0.8< SAG42/SAG32< 2.1. By limiting SAG42/SAG32 within a reasonable range, the optical caliber of the camera lens is ensured to be uniform and excessive, so that the assembly stability is ensured, and on the other hand, the processing characteristics of the third lens and the fourth lens are ensured; preferably, 0.9< SAG42/SAG32< 2.0.
In this embodiment, the on-axis distance SAG11 from the intersection point of the surface of the first lens close to the light incident side and the optical axis to the effective radius vertex of the surface of the first lens close to the light incident side, and the on-axis distance SAG52 from the intersection point of the surface of the fifth lens close to the light exit side and the optical axis to the effective radius vertex of the surface of the fifth lens close to the light exit side satisfy: 0< SAG11/SAG52< 0.7. By limiting SAG11/SAG52 within a reasonable range, the imaging lens is ensured to have an increased field angle and a small optical aperture, and on the other hand, the processing characteristics of the first lens and the fifth lens are ensured. Preferably, 0< SAG11/SAG52< 0.6.
In the present embodiment, the edge thickness ET1 of the first lens, the edge thickness ET4 of the fourth lens, and the edge thickness ET5 of the fifth lens satisfy: 0.8< (ET1+ ET4)/ET5< 1.9. By limiting (ET1+ ET4)/ET5 within a reasonable range, the field angle of the camera lens is effectively increased, the deflection of light rays with large incidence angles is reduced, and the assembly consistency of the first five lenses is ensured. Preferably, 0.85< (ET1+ ET4)/ET5< 1.8.
The imaging lens in the present application may employ a plurality of lenses, for example, the above-described six lenses. By reasonably distributing the focal power and the surface shape of each lens, the central thickness of each lens, the axial distance between each lens and the like, the aperture of the camera lens can be effectively increased, the sensitivity of the camera lens can be reduced, and the machinability of the camera lens can be improved, so that the camera lens is more beneficial to production and processing and can be suitable for portable electronic equipment such as smart phones.
In the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality.
However, it will be appreciated by those skilled in the art that the number of lenses making up the imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the claimed subject matter. For example, although six lenses are exemplified in the embodiment, the imaging lens is not limited to including six lenses. The camera lens may also include other numbers of lenses, as desired.
Examples of specific surface types and parameters of the imaging lens applicable to the above embodiments are further described below with reference to the drawings.
It should be noted that any one of the following examples one to seven is applicable to all embodiments of the present application.
Example one
As shown in fig. 1 to 5, an imaging lens of the first example of the present application is described. Fig. 1 shows a schematic diagram of an imaging lens structure of example one.
As shown in fig. 1, the imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens E1 has negative power, and the surface S1 of the first lens close to the light-in side is convex, and the surface S2 of the first lens close to the light-out side is concave. The second lens E2 has positive refractive power, and the surface S3 of the second lens near the light incident side is concave, and the surface S4 of the second lens near the light exit side is convex. The third lens E3 has positive power, and the surface S5 of the third lens near the light-in side is concave, and the surface S6 of the third lens near the light-out side is convex. The fourth lens E4 has positive power, and the surface S7 of the fourth lens near the light-in side is convex, and the surface S8 of the fourth lens near the light-out side is convex. The fifth lens E5 has negative power, and the surface S9 of the fifth lens near the light-in side is concave, and the surface S10 of the fifth lens near the light-out side is concave. The sixth lens E6 has positive power, and the surface S11 of the sixth lens near the light-in side is convex, and the surface S12 of the sixth lens near the light-out side is concave. The filter E7 has a surface S13 close to the light entrance side and a surface S14 close to the light exit side. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the camera lens is 1.39mm, the total length TTL of the camera lens is 7.78mm and the image height ImgH is 1.34 mm.
Table 1 shows a basic structural parameter table of the imaging lens of example one, in which the units of the curvature radius, the thickness/distance, the focal length, and the effective radius are all millimeters (mm).
TABLE 1
In the first example, the surface of any one of the first lens element E1 to the sixth lens element E6 close to the light incident side and the image side surface are aspheric, and the surface shape of each aspheric lens can be defined by, but is not limited to, the following aspheric formula:
wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20 that can be used for each of the aspherical mirrors S1-S12 in example one.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.8726E-02 | 1.0128E-02 | -2.0413E-03 | 1.6640E-04 | 2.6815E-07 | 9.5241E-09 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 2.9165E-02 | -1.0297E-02 | 2.1672E-02 | -6.4425E-02 | 1.3899E-01 | -1.8881E-01 | 1.6171E-01 | -8.5039E-02 | 2.5114E-02 |
| S3 | -5.9921E-02 | -3.8014E-02 | -1.3926E-02 | 2.7643E-02 | 1.3821E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 4.1448E-02 | -9.6474E-02 | 1.0591E-01 | -3.6267E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 5.9414E-02 | -1.3886E-01 | 1.2796E-01 | -4.0201E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 5.3269E-02 | -1.3547E-02 | 1.6253E-02 | -3.9082E-03 | -1.1922E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -4.9119E-03 | -4.3251E-03 | 3.8808E-02 | -7.5952E-02 | 8.2991E-02 | -4.8991E-02 | 1.1682E-02 | 0.0000E+00 | 0.0000E+00 |
| S8 | -2.2884E-02 | -5.5938E-02 | -2.1472E-03 | 1.5982E-01 | -1.8099E-01 | 8.0878E-02 | -1.3181E-02 | 0.0000E+00 | 0.0000E+00 |
| S9 | -1.1080E-03 | 6.0760E-02 | -3.9196E-01 | 6.5530E-01 | -5.3193E-01 | 2.2098E-01 | -3.7788E-02 | 0.0000E+00 | 0.0000E+00 |
| S10 | -1.6251E-01 | 4.2691E-01 | -7.6647E-01 | 8.8917E-01 | -6.6144E-01 | 2.9385E-01 | -5.9029E-02 | 0.0000E+00 | 0.0000E+00 |
| S11 | -1.7405E-01 | 1.9412E-01 | -1.4122E-01 | 6.5306E-02 | -2.0793E-02 | 3.7951E-03 | -1.2799E-04 | -4.5473E-05 | 0.0000E+00 |
| S12 | -1.8637E-02 | 1.6677E-03 | 1.1326E-02 | -5.6000E-03 | -1.8081E-03 | 1.3255E-03 | -1.8032E-04 | -4.9756E-07 | 0.0000E+00 |
TABLE 2
Fig. 2 shows an axial chromatic aberration curve of the imaging lens of the first example, which shows the deviation of the convergent focal points of the light rays of different wavelengths after passing through the imaging lens. Fig. 3 shows astigmatism curves of the imaging lens of the first example, which represent meridional field curvature and sagittal field curvature. Fig. 4 shows distortion curves of the imaging lens of the first example, which show distortion magnitude values corresponding to different angles of view. Fig. 5 shows a chromatic aberration of magnification curve of the imaging lens of the first example, which shows the deviation of different image heights on the image formation plane after the light passes through the imaging lens.
As can be seen from fig. 2 to 5, the imaging lens according to the first example can achieve good imaging quality.
Example two
As shown in fig. 6 to 10, an imaging lens of example two of the present application is described. In this example and the following examples, descriptions of parts similar to example one will be omitted for the sake of brevity. Fig. 6 shows a schematic diagram of the imaging lens structure of example two.
As shown in fig. 6, the imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens E1 has negative power, and the surface S1 of the first lens close to the light-in side is convex, and the surface S2 of the first lens close to the light-out side is concave. The second lens E2 has positive refractive power, and the surface S3 of the second lens near the light incident side is concave, and the surface S4 of the second lens near the light exit side is convex. The third lens E3 has positive power, and the surface S5 of the third lens near the light-in side is concave, and the surface S6 of the third lens near the light-out side is convex. The fourth lens E4 has positive power, and the surface S7 of the fourth lens near the light-in side is convex, and the surface S8 of the fourth lens near the light-out side is convex. The fifth lens E5 has negative power, and the surface S9 of the fifth lens near the light-in side is concave, and the surface S10 of the fifth lens near the light-out side is concave. The sixth lens E6 has positive power, and the surface S11 of the sixth lens near the light-in side is convex, and the surface S12 of the sixth lens near the light-out side is concave. The filter E7 has a surface S13 close to the light entrance side and a surface S14 close to the light exit side. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 2.59mm, the total length TTL of the imaging lens is 7.81mm and the image height ImgH is 2.33 mm.
Table 3 shows a basic structural parameter table of the imaging lens of example two, in which the units of the curvature radius, the thickness/distance, the focal length, and the effective radius are all millimeters (mm).
TABLE 3
Table 4 shows the high-order term coefficients that can be used for each aspherical mirror surface in example two, wherein each aspherical mirror surface type can be defined by formula (1) given in example one above.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -8.1410E-02 | 2.4350E-02 | -3.9204E-03 | 3.1746E-04 | 2.6772E-06 | 5.5384E-08 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -1.1087E-01 | -7.7248E-01 | 8.2693E+00 | -4.7307E+01 | 1.5945E+02 | -3.3495E+02 | 4.4315E+02 | -3.5932E+02 | 1.6317E+02 |
| S3 | -3.1912E-02 | -2.3244E-02 | -3.7917E-02 | 1.7313E-02 | 7.4384E-04 | 3.3951E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 3.7410E-02 | -4.8695E-02 | 1.7580E-02 | 1.4605E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 3.2669E-02 | -7.2451E-02 | 3.7904E-02 | 1.2279E-03 | 2.1349E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 1.5980E-02 | -1.0964E-02 | 6.7853E-03 | -1.2145E-03 | 3.4389E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -8.3803E-04 | 3.2036E-03 | 2.4217E-03 | -7.7027E-03 | 8.1212E-03 | -4.3064E-03 | 9.0876E-04 | 0.0000E+00 | 0.0000E+00 |
| S8 | 4.4477E-02 | -2.1970E-01 | 3.2627E-01 | -2.5185E-01 | 1.1340E-01 | -2.8553E-02 | 3.5907E-03 | -4.0928E-04 | 1.0932E-04 |
| S9 | 7.4835E-02 | -2.3316E-01 | 2.1408E-01 | -6.7547E-02 | -2.0280E-02 | 1.9693E-02 | -3.8182E-03 | 0.0000E+00 | 0.0000E+00 |
| S10 | 2.9190E-02 | -1.4520E-02 | -5.1740E-02 | 9.2501E-02 | -6.5668E-02 | 2.2587E-02 | -3.1080E-03 | 0.0000E+00 | 0.0000E+00 |
| S11 | -4.6577E-02 | 2.9817E-02 | -1.4470E-02 | 4.6214E-03 | -9.3268E-04 | 1.0084E-04 | -3.3501E-06 | -1.7415E-07 | 0.0000E+00 |
| S12 | -6.4155E-02 | 2.3469E-02 | -8.6615E-03 | 2.4860E-03 | -5.0130E-04 | 5.7675E-05 | -2.8361E-06 | 8.6993E-09 | 0.0000E+00 |
TABLE 4
Fig. 7 shows an axial chromatic aberration curve of the imaging lens of example two, which shows the deviation of the convergent focus of light rays of different wavelengths after passing through the imaging lens. Fig. 8 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of example two. Fig. 9 shows distortion curves of the imaging lens of example two, which show values of distortion magnitudes corresponding to different angles of view. Fig. 10 shows a chromatic aberration of magnification curve of the imaging lens of the second example, which shows the deviation of different image heights on the image forming surface after the light passes through the imaging lens.
As can be seen from fig. 7 to 10, the imaging lens according to example two can achieve good imaging quality.
Example III
As shown in fig. 11 to 15, an imaging lens of example three of the present application is described. Fig. 11 shows a schematic diagram of an imaging lens structure of example three.
As shown in fig. 11, the imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens E1 has negative power, and the surface S1 of the first lens close to the light-in side is convex, and the surface S2 of the first lens close to the light-out side is concave. The second lens E2 has negative power, and the surface S3 of the second lens close to the light-in side is convex, and the surface S4 of the second lens close to the light-out side is concave. The third lens E3 has positive power, and the surface S5 of the third lens near the light-in side is concave, and the surface S6 of the third lens near the light-out side is convex. The fourth lens E4 has positive power, and the surface S7 of the fourth lens near the light-in side is convex, and the surface S8 of the fourth lens near the light-out side is convex. The fifth lens E5 has negative power, and the surface S9 of the fifth lens near the light-in side is convex, and the surface S10 of the fifth lens near the light-out side is concave. The sixth lens E6 has negative power, and the surface S11 of the sixth lens near the light-in side is convex, and the surface S12 of the sixth lens near the light-out side is concave. The filter E7 has a surface S13 close to the light entrance side and a surface S14 close to the light exit side. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the camera lens is 3.69mm, the total length TTL of the camera lens is 7.81mm and the image height ImgH is 3.48 mm.
Table 5 shows a basic structural parameter table of the imaging lens of example three, in which the units of the curvature radius, the thickness/distance, the focal length, and the effective radius are all millimeters (mm).
TABLE 5
Table 6 shows the high-order term coefficients that can be used for each aspherical mirror surface in example three, wherein each aspherical mirror surface type can be defined by formula (1) given in example one above.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -8.3058E-02 | 1.6845E-02 | -1.6620E-03 | 4.8232E-05 | 8.2261E-07 | -1.2687E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -1.0876E-01 | 2.9924E-03 | 6.5310E-02 | -2.9207E-01 | 6.7881E-01 | -9.8959E-01 | 9.0926E-01 | -5.1383E-01 | 1.6323E-01 |
| S3 | -4.5291E-02 | 1.1858E-04 | -1.4841E-02 | 5.1192E-03 | 8.8155E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -6.1836E-02 | 8.8724E-02 | -5.9713E-02 | 1.6151E-02 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | -3.4149E-02 | 1.0382E-01 | -6.8889E-02 | 1.6462E-02 | -9.7691E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -3.1497E-03 | -3.7334E-03 | 2.7986E-03 | -6.5117E-04 | -1.6491E-05 | -1.1269E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.3769E-03 | -1.3422E-02 | 8.5958E-03 | -3.7282E-03 | 1.1446E-03 | -1.2654E-04 | 2.1040E-06 | -5.1799E-07 | 0.0000E+00 |
| S8 | -1.1459E-02 | 1.3513E-02 | -9.1953E-03 | 6.3001E-03 | -2.8148E-03 | 9.0121E-04 | -2.3600E-04 | 6.9418E-05 | -1.6697E-05 |
| S9 | -6.3341E-02 | 1.3379E-02 | -3.1079E-03 | 3.7886E-03 | -2.3744E-03 | 6.3377E-04 | -6.1609E-05 | 0.0000E+00 | 0.0000E+00 |
| S10 | -4.4093E-02 | 5.0339E-03 | 5.6701E-03 | -3.5894E-03 | 6.8325E-04 | -3.0641E-05 | -7.0068E-06 | 2.0133E-06 | -2.8851E-07 |
| S11 | -6.0065E-02 | 2.4320E-02 | -7.4252E-03 | 1.7616E-03 | -2.7715E-04 | 2.4436E-05 | -7.3543E-07 | -4.2589E-08 | 2.8099E-09 |
| S12 | -7.7192E-02 | 2.8916E-02 | -9.6625E-03 | 2.4885E-03 | -4.6557E-04 | 6.0060E-05 | -5.0005E-06 | 2.3647E-07 | -4.4272E-09 |
TABLE 6
Fig. 12 shows an axial chromatic aberration curve of the imaging lens of example three, which shows the deviation of the convergent focus of light rays of different wavelengths after passing through the imaging lens. Fig. 13 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of example three. Fig. 14 shows distortion curves of the imaging lens of example three, which show distortion magnitude values corresponding to different angles of view. Fig. 15 shows a chromatic aberration of magnification curve of the imaging lens of example three, which represents the deviation of different image heights on the imaging surface after the light passes through the imaging lens.
As can be seen from fig. 12 to 15, the imaging lens according to the third example can achieve good imaging quality.
Example four
As shown in fig. 16 to 20, an imaging lens of the present example four is described. Fig. 16 shows a schematic diagram of an imaging lens structure of example four.
As shown in fig. 16, the imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens E1 has negative power, and the surface S1 of the first lens close to the light-in side is convex, and the surface S2 of the first lens close to the light-out side is concave. The second lens E2 has negative power, and the surface S3 of the second lens close to the light-in side is convex, and the surface S4 of the second lens close to the light-out side is concave. The third lens E3 has positive power, and the surface S5 of the third lens near the light-in side is concave, and the surface S6 of the third lens near the light-out side is convex. The fourth lens E4 has positive power, and the surface S7 of the fourth lens near the light-in side is convex, and the surface S8 of the fourth lens near the light-out side is convex. The fifth lens E5 has negative power, and the surface S9 of the fifth lens near the light-in side is convex, and the surface S10 of the fifth lens near the light-out side is concave. The sixth lens E6 has negative power, and the surface S11 of the sixth lens near the light entrance side is concave, and the surface S12 of the sixth lens near the light exit side is concave. The filter E7 has a surface S13 close to the light entrance side and a surface S14 close to the light exit side. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the camera lens is 4.29mm, the total length TTL of the camera lens is 7.81mm and the image height ImgH is 3.99 mm.
Table 7 shows a basic structural parameter table of the imaging lens of example four, in which the units of the curvature radius, the thickness/distance, the focal length, and the effective radius are all millimeters (mm).
TABLE 7
Table 8 shows the high-order term coefficients that can be used for each aspherical mirror surface in example four, wherein each aspherical mirror surface type can be defined by formula (1) given in example one above.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -4.6859E-02 | 1.6963E-03 | 1.0769E-03 | -1.2885E-04 | -1.1475E-06 | -1.5128E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -5.3620E-02 | 6.9211E-05 | -1.4123E-03 | 3.3246E-03 | -6.7766E-03 | 9.0243E-03 | -7.8144E-03 | 4.2554E-03 | -1.3320E-03 |
| S3 | -5.2711E-02 | -8.7623E-03 | -3.5251E-03 | 2.4561E-03 | 3.6567E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -3.5708E-02 | 1.4436E-02 | -9.3154E-03 | 3.2335E-03 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 3.9577E-02 | 1.3499E-02 | -1.0674E-02 | 2.4937E-03 | -1.3929E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -4.2176E-04 | -1.0889E-03 | 4.6315E-03 | -1.0717E-03 | -7.3347E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -2.4404E-02 | -2.2218E-03 | 3.4273E-03 | -9.9083E-04 | 4.5270E-05 | 1.0123E-04 | -1.5058E-05 | -8.4269E-07 | 0.0000E+00 |
| S8 | -2.0813E-02 | 2.2561E-02 | -1.5962E-02 | 8.9921E-03 | -3.4648E-03 | 9.9108E-04 | -2.3835E-04 | 6.4169E-05 | -1.4301E-05 |
| S9 | -4.0889E-02 | 1.1289E-02 | -5.6382E-04 | -6.0185E-04 | -3.9455E-06 | 4.3611E-05 | -4.4734E-06 | 0.0000E+00 | 0.0000E+00 |
| S10 | -1.6288E-02 | -8.8385E-03 | 1.3458E-02 | -7.9334E-03 | 2.3388E-03 | -3.7260E-04 | 2.9959E-05 | -1.1048E-06 | 8.5906E-08 |
| S11 | -8.4425E-02 | 3.9684E-02 | -1.3229E-02 | 3.2101E-03 | -5.2437E-04 | 5.5411E-05 | -3.5981E-06 | 1.2736E-07 | -1.6874E-09 |
| S12 | -9.2474E-02 | 3.7564E-02 | -1.2454E-02 | 2.9460E-03 | -4.8506E-04 | 5.3718E-05 | -3.7784E-06 | 1.5006E-07 | -2.5051E-09 |
TABLE 8
Fig. 17 shows an on-axis chromatic aberration curve of the imaging lens of example four, which shows the deviation of the convergent focus of light rays of different wavelengths after passing through the imaging lens. Fig. 18 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of example four. Fig. 19 shows distortion curves of the imaging lens of example four, which show values of distortion magnitudes corresponding to different angles of view. Fig. 20 shows a chromatic aberration of magnification curve of the imaging lens of example four, which represents a deviation of different image heights on the imaging surface after light passes through the imaging lens.
As can be seen from fig. 17 to 20, the imaging lens according to example four can achieve good imaging quality.
Example five
As shown in fig. 21 to 25, an imaging lens of example five of the present application is described. Fig. 21 shows a schematic diagram of an imaging lens structure of example five.
As shown in fig. 21, the imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens E1 has negative power, and the surface S1 of the first lens close to the light-in side is convex, and the surface S2 of the first lens close to the light-out side is concave. The second lens E2 has negative power, and the surface S3 of the second lens close to the light-in side is convex, and the surface S4 of the second lens close to the light-out side is concave. The third lens E3 has positive power, and the surface S5 of the third lens near the light-in side is concave, and the surface S6 of the third lens near the light-out side is convex. The fourth lens E4 has positive power, and the surface S7 of the fourth lens near the light-in side is convex, and the surface S8 of the fourth lens near the light-out side is convex. The fifth lens E5 has negative power, and the surface S9 of the fifth lens near the light-in side is convex, and the surface S10 of the fifth lens near the light-out side is concave. The sixth lens E6 has negative power, and the surface S11 of the sixth lens near the light entrance side is concave, and the surface S12 of the sixth lens near the light exit side is concave. The filter E7 has a surface S13 close to the light entrance side and a surface S14 close to the light exit side. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the imaging lens is 4.59mm, the total length TTL of the imaging lens is 7.81mm and the image height ImgH is 4.22 mm.
Table 9 shows a basic structural parameter table of the imaging lens of example five, in which the units of the curvature radius, the thickness/distance, the focal length, and the effective radius are all millimeters (mm).
TABLE 9
Table 10 shows the high-order term coefficients that can be used for each aspherical mirror surface in example five, wherein each aspherical mirror surface type can be defined by formula (1) given in example one above.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -3.7441E-02 | -9.9227E-04 | 1.5287E-03 | -1.5902E-04 | -1.7484E-06 | -9.9044E-08 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -3.9461E-02 | -1.0765E-03 | -7.3399E-04 | 4.2419E-03 | -7.8011E-03 | 1.0130E-02 | -8.3771E-03 | 4.3578E-03 | -1.2973E-03 |
| S3 | -4.7258E-02 | -1.0145E-02 | -4.8352E-03 | 2.6633E-03 | 2.6944E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -4.0076E-02 | 1.6795E-02 | -1.0946E-02 | 3.1597E-03 | -9.3184E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 1.6633E-02 | 2.9481E-02 | -1.6406E-02 | 3.3552E-03 | -1.6100E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 7.9155E-04 | 8.6419E-04 | 3.9571E-03 | -8.7532E-04 | -7.4590E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -2.0515E-02 | -5.8261E-03 | 2.9059E-03 | 1.4138E-03 | -1.5540E-03 | 6.0399E-04 | -7.3381E-05 | -9.0491E-07 | 0.0000E+00 |
| S8 | -2.7143E-02 | 1.3671E-02 | -5.2392E-03 | 2.2971E-03 | -1.2073E-03 | 6.3712E-04 | -2.3458E-04 | 7.3883E-05 | -1.7361E-05 |
| S9 | -2.5250E-02 | -4.5826E-03 | 1.2164E-02 | -7.4556E-03 | 2.2200E-03 | -3.5056E-04 | 2.3784E-05 | 9.1697E-08 | 0.0000E+00 |
| S10 | -4.7575E-03 | -2.1047E-02 | 1.9514E-02 | -1.0228E-02 | 3.0139E-03 | -5.0582E-04 | 4.5027E-05 | -2.0987E-06 | 1.7153E-07 |
| S11 | -7.4651E-02 | 2.8521E-02 | -8.1579E-03 | 1.7681E-03 | -2.5831E-04 | 2.4347E-05 | -1.4059E-06 | 4.2791E-08 | -3.1561E-10 |
| S12 | -8.3257E-02 | 2.9146E-02 | -9.0201E-03 | 2.0696E-03 | -3.4699E-04 | 4.2179E-05 | -3.7505E-06 | 2.4968E-07 | -1.2601E-08 |
Fig. 22 shows an on-axis chromatic aberration curve of the imaging lens of example five, which shows the deviation of the convergent focus of light rays of different wavelengths after passing through the imaging lens. Fig. 23 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of example five. Fig. 24 shows distortion curves of the imaging lens of example five, which show distortion magnitude values corresponding to different angles of view. Fig. 25 shows a chromatic aberration of magnification curve of the imaging lens of example five, which represents a deviation of different image heights on the imaging surface after light passes through the imaging lens.
As can be seen from fig. 22 to 25, the imaging lens according to example five can achieve good imaging quality.
Example six
As shown in fig. 26 to 30, an imaging lens of example six of the present application is described. Fig. 26 shows a schematic diagram of an imaging lens structure of example six.
As shown in fig. 26, the imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens E1 has negative power, and the surface S1 of the first lens close to the light-in side is convex, and the surface S2 of the first lens close to the light-out side is concave. The second lens E2 has positive refractive power, and the surface S3 of the second lens close to the light-in side is convex, and the surface S4 of the second lens close to the light-out side is convex. The third lens E3 has positive power, and the surface S5 of the third lens near the light-in side is concave, and the surface S6 of the third lens near the light-out side is convex. The fourth lens E4 has positive power, and the surface S7 of the fourth lens near the light-in side is convex, and the surface S8 of the fourth lens near the light-out side is convex. The fifth lens E5 has negative power, and the surface S9 of the fifth lens near the light-in side is convex, and the surface S10 of the fifth lens near the light-out side is concave. The sixth lens E6 has negative power, and the surface S11 of the sixth lens near the light entrance side is concave, and the surface S12 of the sixth lens near the light exit side is concave. The filter E7 has a surface S13 close to the light entrance side and a surface S14 close to the light exit side. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the camera lens is 4.65mm, the total length TTL of the camera lens is 7.01mm and the image height ImgH is 3.97 mm.
Table 11 shows a basic structural parameter table of the imaging lens of example six, in which the units of the curvature radius, the thickness/distance, the focal length, and the effective radius are all millimeters (mm).
TABLE 11
Table 12 shows the high-order term coefficients that can be used for each of the aspherical mirror surfaces in example six, wherein each aspherical mirror surface type can be defined by formula (1) given in example one above.
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -4.8579E-02 | -1.9143E-02 | 9.3096E-03 | -1.0671E-03 | -5.7935E-06 | -3.0878E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | -5.5134E-02 | -2.3550E-02 | 9.3235E-03 | 9.5330E-03 | -2.3614E-02 | 3.5560E-02 | -3.4350E-02 | 2.0890E-02 | -7.2917E-03 |
| S3 | -5.3941E-02 | -1.7404E-02 | -1.4307E-02 | 7.4132E-03 | 1.8720E-04 | 1.2028E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | -5.9123E-02 | 2.1601E-02 | -2.1374E-02 | 7.8568E-03 | 1.1203E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | -8.3196E-03 | 5.3022E-02 | -2.8446E-02 | 6.0191E-03 | -2.1041E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | 1.6575E-02 | -1.1420E-03 | -8.9703E-04 | 1.8854E-04 | 3.0539E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S7 | -1.9549E-02 | -4.2196E-03 | -3.9027E-03 | 2.2539E-03 | -6.6368E-05 | 1.6218E-04 | -4.7776E-05 | -1.0615E-06 | 0.0000E+00 |
| S8 | -3.0486E-02 | 6.7907E-03 | 5.2699E-04 | 9.0635E-04 | -2.3315E-03 | 1.5653E-03 | -5.1241E-04 | 1.4262E-04 | -3.3127E-05 |
| S9 | 6.7109E-03 | -3.9296E-02 | 3.2069E-02 | -1.4595E-02 | 3.9795E-03 | -6.2252E-04 | 4.2759E-05 | 4.4052E-08 | 0.0000E+00 |
| S10 | 2.4250E-02 | -4.7827E-02 | 3.0602E-02 | -1.2297E-02 | 3.0655E-03 | -4.5441E-04 | 3.5644E-05 | -1.2749E-06 | 8.1062E-08 |
| S11 | -5.0720E-02 | 3.9000E-02 | -1.6185E-02 | 4.9072E-03 | -1.0260E-03 | 1.4103E-04 | -1.2027E-05 | 5.6488E-07 | -1.0230E-08 |
| S12 | -7.4602E-02 | 3.2848E-02 | -1.1768E-02 | 3.0308E-03 | -5.4660E-04 | 6.6992E-05 | -5.2652E-06 | 2.3435E-07 | -4.2701E-09 |
TABLE 12
Fig. 27 shows an on-axis chromatic aberration curve of the imaging lens of example six, which shows the deviation of the convergent focal points of light rays of different wavelengths after passing through the imaging lens. Fig. 28 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of example six. Fig. 29 shows distortion curves of the imaging lens of example six, which show distortion magnitude values corresponding to different angles of view. Fig. 30 shows a chromatic aberration of magnification curve of the imaging lens of example six, which represents a deviation of different image heights on the imaging surface after light passes through the imaging lens.
As can be seen from fig. 27 to 30, the imaging lens according to example six can achieve good image quality.
Example seven
As shown in fig. 31 to 35, an imaging lens of example seven of the present application is described. Fig. 31 shows a schematic diagram of an imaging lens structure of example seven.
As shown in fig. 31, the imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.
The first lens E1 has negative power, and the surface S1 of the first lens close to the light-in side is convex, and the surface S2 of the first lens close to the light-out side is concave. The second lens E2 has positive refractive power, and the surface S3 of the second lens close to the light-in side is convex, and the surface S4 of the second lens close to the light-out side is convex. The third lens E3 has positive power, and the surface S5 of the third lens near the light-in side is concave, and the surface S6 of the third lens near the light-out side is convex. The fourth lens E4 has positive power, and the surface S7 of the fourth lens near the light-in side is convex, and the surface S8 of the fourth lens near the light-out side is convex. The fifth lens E5 has negative power, and the surface S9 of the fifth lens near the light-in side is convex, and the surface S10 of the fifth lens near the light-out side is concave. The sixth lens E6 has negative power, and the surface S11 of the sixth lens near the light entrance side is concave, and the surface S12 of the sixth lens near the light exit side is concave. The filter E7 has a surface S13 close to the light entrance side and a surface S14 close to the light exit side. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.
In this example, the total effective focal length f of the camera lens is 4.65mm, the total length TTL of the camera lens is 7.01mm and the image height ImgH is 3.99 mm.
Table 13 shows a basic structural parameter table of the imaging lens of example seven, in which the units of the curvature radius, the thickness/distance, the focal length, and the effective radius are all millimeters (mm).
Watch 13
Table 14 shows the high-order term coefficients that can be used for each of the aspherical mirror surfaces in example seven, wherein each of the aspherical mirror surface types can be defined by formula (1) given in example one above.
TABLE 14
Fig. 32 shows an on-axis chromatic aberration curve of the imaging lens of example seven, which indicates that light rays of different wavelengths are deviated from the convergent focus after passing through the imaging lens. Fig. 33 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of example seven. Fig. 34 shows distortion curves of the imaging lens of example seven, which indicate distortion magnitude values corresponding to different angles of view. Fig. 35 shows a chromatic aberration of magnification curve of the imaging lens of example seven, which represents a deviation of different image heights on the imaging surface after light passes through the imaging lens.
As can be seen from fig. 32 to 35, the imaging lens according to example seven can achieve good imaging quality.
To sum up, examples one to seven respectively satisfy the relationships shown in table 15.
| Conditions/examples | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| ImgH/f | 0.97 | 0.90 | 0.94 | 0.93 | 0.92 | 0.85 | 0.86 |
| f1/f5 | 1.00 | 1.19 | 0.91 | 0.93 | 0.91 | 1.55 | 1.60 |
| f3/f4 | 1.69 | 1.61 | 1.64 | 2.51 | 1.56 | 1.13 | 0.99 |
| (R5+R6)/(R5-R6) | 2.90 | 2.29 | 1.01 | 1.74 | 1.29 | 1.45 | 1.32 |
| f/R10 | 0.81 | 0.99 | 1.66 | 1.67 | 1.80 | 1.68 | 1.77 |
| N2+N5 | 3.34 | 3.32 | 3.27 | 3.29 | 3.31 | 3.34 | 3.34 |
| TTL/SL | 1.40 | 1.34 | 1.29 | 1.28 | 1.28 | 1.25 | 1.25 |
| f23/f45 | 0.05 | 0.19 | 1.21 | 1.99 | 1.08 | 0.39 | 0.31 |
| SAG42/SAG32 | 0.95 | 1.10 | 1.63 | 1.94 | 1.65 | 1.30 | 1.28 |
| SAG11/SAG52 | 0.07 | 0.57 | 0.35 | 0.45 | 0.46 | 0.47 | 0.45 |
| T12/T56 | 2.81 | 0.86 | 0.49 | 0.33 | 0.31 | 0.35 | 0.34 |
| (ET1+ET4)/ET5 | 1.72 | 1.20 | 1.30 | 1.15 | 1.19 | 0.92 | 0.93 |
Table 15 table 16 gives effective focal lengths f of the imaging lenses of example one to example seven, and effective focal lengths f1 to f6 of the respective lenses.
| |
1 | 2 | 3 | 4 | 5 | 6 | 7 |
| f1(mm) | -2.12 | -3.08 | -5.24 | -7.16 | -8.44 | -11.46 | -11.40 |
| f2(mm) | 7.50 | 10.01 | -29.36 | -76.01 | -353.83 | 15.93 | 16.63 |
| f3(mm) | 4.36 | 4.28 | 4.82 | 7.61 | 5.95 | 5.17 | 4.75 |
| f4(mm) | 2.58 | 2.66 | 2.94 | 3.03 | 3.82 | 4.58 | 4.80 |
| f5(mm) | -2.13 | -2.58 | -5.77 | -7.68 | -9.28 | -7.41 | -7.12 |
| f6(mm) | 3.95 | 15.84 | -7.51 | -5.81 | -5.55 | -4.45 | -4.55 |
| f(mm) | 1.39 | 2.59 | 3.69 | 4.29 | 4.59 | 4.65 | 4.65 |
| TTL(mm) | 7.78 | 7.81 | 7.81 | 7.81 | 7.81 | 7.01 | 7.01 |
| ImgH(mm) | 1.34 | 2.33 | 3.48 | 3.99 | 4.22 | 3.97 | 3.99 |
TABLE 16
The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the above-described image pickup lens.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An imaging lens, comprising:
the surface of the first lens, which is close to the light incidence side of the camera lens, is a convex surface;
a second lens having an optical power;
the surface of the third lens, which is close to the light inlet side, is a concave surface, and the surface of the third lens, which is close to the light outlet side of the camera lens, is a convex surface;
the surface of the fourth lens, which is close to the light inlet side, is a convex surface;
the surface of the fifth lens, which is close to the light emergent side, is a concave surface;
the surface of the sixth lens, which is close to the light emergent side, is a concave surface;
the imaging surface of the camera lens meets the following requirements between the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens and the effective focal length f of the camera lens: 0.6< ImgH/f < 1.6.
2. The imaging lens according to claim 1, wherein an effective focal length f1 of the first lens and an effective focal length f5 of the fifth lens satisfy: 0.7< f1/f5< 1.8.
3. The imaging lens according to claim 1, wherein an effective focal length f3 of the third lens and an effective focal length f4 of the fourth lens satisfy: 0.8< f3/f4< 2.7.
4. The imaging lens according to claim 1, wherein a radius of curvature R5 of a surface of the third lens closer to the light entrance side and a radius of curvature R6 of a surface of the third lens closer to the light exit side satisfy: 0.8< (R5+ R6)/(R5-R6) < 3.0.
5. An imaging lens according to claim 1, wherein an effective focal length f of the imaging lens and a radius of curvature R10 of a surface of the fifth lens on the light exit side satisfy: 0.6< f/R10< 2.0.
6. The imaging lens according to claim 1, wherein a refractive index N2 of the second lens and a refractive index N5 of the fifth lens satisfy: 3.2< N2+ N5< 3.6.
7. An imaging lens according to claim 1, wherein an on-axis distance TTL from a surface of the first lens closer to the light entrance side to the imaging plane and an on-axis distance SL from a diaphragm of the imaging lens to the imaging plane satisfy: 1.1< TTL/SL < 1.6.
8. The imaging lens according to claim 1, wherein a combined focal length f23 of the second lens and the third lens and a combined focal length f45 of the fourth lens and the fifth lens satisfy: 0< f23/f45< 2.2.
9. The imaging lens according to claim 1, wherein an on-axis distance SAG42 from an intersection point of a surface of the fourth lens close to the light exit side and an optical axis to an effective radius vertex of the surface of the fourth lens close to the light exit side, and an on-axis distance SAG32 from an intersection point of a surface of the third lens close to the light exit side and the optical axis to an effective radius vertex of a surface of the third lens close to the light exit side satisfy: 0.8< SAG42/SAG32< 2.1.
10. An imaging lens, comprising:
the surface of the first lens, which is close to the light incidence side of the camera lens, is a convex surface;
a second lens having an optical power;
the surface of the third lens, which is close to the light inlet side, is a concave surface, and the surface of the third lens, which is close to the light outlet side of the camera lens, is a convex surface;
the surface of the fourth lens, which is close to the light inlet side, is a convex surface;
the surface of the fifth lens, which is close to the light emergent side, is a concave surface;
the surface of the sixth lens, which is close to the light emergent side, is a concave surface;
wherein an air interval T12 of the first lens and the second lens on an optical axis, and an air interval T56 of the fifth lens and the sixth lens on the optical axis satisfy: 0.2< T12/T56< 3.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372337.1A CN113848633B (en) | 2021-11-18 | 2021-11-18 | Image pickup lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372337.1A CN113848633B (en) | 2021-11-18 | 2021-11-18 | Image pickup lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113848633A true CN113848633A (en) | 2021-12-28 |
| CN113848633B CN113848633B (en) | 2024-07-12 |
Family
ID=78984539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111372337.1A Active CN113848633B (en) | 2021-11-18 | 2021-11-18 | Image pickup lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113848633B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114609753A (en) * | 2022-03-08 | 2022-06-10 | 浙江舜宇光学有限公司 | Imaging system |
| CN115032760A (en) * | 2022-03-03 | 2022-09-09 | 浙江舜宇光学有限公司 | Camera lens |
| TWI792836B (en) * | 2022-01-05 | 2023-02-11 | 紘立光電股份有限公司 | Optical imaging lens, imaging device, and electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033141A (en) * | 2015-02-26 | 2016-10-19 | 大立光电股份有限公司 | Lens system, image capturing device and electronic device |
| CN107783256A (en) * | 2016-08-24 | 2018-03-09 | 株式会社理光 | Pick-up lens, camera apparatus, in-vehicle camera device, sensing device, vehicle-mounted sensing device |
| CN113625423A (en) * | 2021-07-14 | 2021-11-09 | 江西晶超光学有限公司 | Imaging system, camera module and electronic equipment |
-
2021
- 2021-11-18 CN CN202111372337.1A patent/CN113848633B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033141A (en) * | 2015-02-26 | 2016-10-19 | 大立光电股份有限公司 | Lens system, image capturing device and electronic device |
| CN107783256A (en) * | 2016-08-24 | 2018-03-09 | 株式会社理光 | Pick-up lens, camera apparatus, in-vehicle camera device, sensing device, vehicle-mounted sensing device |
| CN113625423A (en) * | 2021-07-14 | 2021-11-09 | 江西晶超光学有限公司 | Imaging system, camera module and electronic equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI792836B (en) * | 2022-01-05 | 2023-02-11 | 紘立光電股份有限公司 | Optical imaging lens, imaging device, and electronic device |
| CN115032760A (en) * | 2022-03-03 | 2022-09-09 | 浙江舜宇光学有限公司 | Camera lens |
| CN114609753A (en) * | 2022-03-08 | 2022-06-10 | 浙江舜宇光学有限公司 | Imaging system |
| CN114609753B (en) * | 2022-03-08 | 2024-06-14 | 浙江舜宇光学有限公司 | Imaging system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113848633B (en) | 2024-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113848633B (en) | Image pickup lens | |
| CN114815168A (en) | Optical imaging lens | |
| CN214669824U (en) | Optical imaging lens | |
| CN113325545B (en) | Optical imaging lens | |
| CN114167572A (en) | Moving focusing optical lens group | |
| CN216210161U (en) | Moving focusing optical lens group | |
| CN114637095A (en) | Imaging system | |
| CN113960754A (en) | Optical imaging lens | |
| CN113759508A (en) | Optical imaging lens | |
| CN216792551U (en) | Optical imaging lens group | |
| CN217181316U (en) | Camera lens group | |
| CN216792564U (en) | Photographic lens | |
| CN217213309U (en) | Camera lens | |
| CN216792562U (en) | Photographic lens group | |
| CN216792565U (en) | Camera lens group | |
| CN217181314U (en) | Imaging lens | |
| CN217181318U (en) | Camera lens group | |
| CN216210187U (en) | Optical imaging lens | |
| CN216210175U (en) | Optical imaging lens | |
| CN216411712U (en) | Photographic lens | |
| CN216411721U (en) | Imaging lens | |
| CN216411714U (en) | Imaging lens group | |
| CN216411704U (en) | Optical imaging lens | |
| CN217181312U (en) | Camera lens | |
| CN216411715U (en) | Imaging system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |