CN111399182B - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
- Publication number
- CN111399182B CN111399182B CN202010343813.6A CN202010343813A CN111399182B CN 111399182 B CN111399182 B CN 111399182B CN 202010343813 A CN202010343813 A CN 202010343813A CN 111399182 B CN111399182 B CN 111399182B
- Authority
- CN
- China
- Prior art keywords
- lens
- optical imaging
- optical
- image
- radius
- 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.)
- Active
Links
- 238000012634 optical imaging Methods 0.000 title claims abstract description 144
- 230000003287 optical effect Effects 0.000 claims abstract description 101
- 238000003384 imaging method Methods 0.000 claims abstract description 74
- 210000001747 pupil Anatomy 0.000 claims description 4
- 230000004075 alteration Effects 0.000 description 38
- 201000009310 astigmatism Diseases 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000000295 complement effect Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
本申请公开了一种光学成像镜头，其沿着光轴由物侧至像侧依序包括：具有正光焦度的第一透镜，其物侧面为凸面；具有负光焦度的第二透镜；具有光焦度的第三透镜；具有光焦度的第四透镜；具有光焦度的第五透镜，其物侧面为凹面；具有正光焦度的第六透镜，其像侧面为凹面；以及具有光焦度的第七透镜。光学成像镜头的第一透镜的物侧面至光学成像镜头的成像面在光轴上的距离TTL与成像面上有效像素区域的对角线长的一半ImgH满足：TTL/ImgH<1.4；以及光学成像镜头的有效焦距f与光学成像镜头的最大视场角的一半Semi‑FOV满足：f*tan(Semi‑FOV)>5.5mm。
The present application discloses an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with positive optical power, whose object side surface is convex; a second lens with negative optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power, whose object side surface is concave; a sixth lens with positive optical power, whose image side surface is concave; and a seventh lens with optical power. The distance TTL from the object side surface of the first lens of the optical imaging lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length of the effective pixel area on the imaging surface ImgH satisfy: TTL/ImgH<1.4; and the effective focal length f of the optical imaging lens and the half of the maximum field of view Semi-FOV of the optical imaging lens satisfy: f*tan(Semi-FOV)>5.5mm.
Description
Technical Field
The present application relates to an optical imaging lens, and particularly to an optical imaging lens including seven lenses.
Background
With the rapid development of the field of smart phones, people put higher and higher requirements on the imaging quality of an imaging lens carried on the smart phone.
On the one hand, with the continuous updating of common photosensitive devices, such as photosensitive coupling devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal-OxideSemicondctor Sensor, CMOS Sensor), the pixel size of the photosensitive devices is gradually reduced, and higher requirements are put on the high imaging quality and miniaturization of the imaging lens used in a matched manner. In addition, the electronic products are developed in a form with excellent functions, light weight, thin weight, and small size, so that the miniaturized imaging lens with good imaging quality is still a main development direction of the mobile phone lens.
In addition, the mobile phone imaging lens has a trend of developing to a large image plane. Large image planes mean higher resolution, and imaging lenses with large image plane characteristics can generally achieve higher resolution and better imaging quality. But how to achieve a large image plane of the imaging lens while ensuring miniaturization also presents a more difficult challenge for the design of optical systems.
Based on the current trend, the conventional five-piece or six-piece lens structure may not be enough to effectively cope with various demands, and a seven-piece optical imaging lens system will become the mainstream.
Disclosure of Invention
An aspect of the present application provides an optical imaging lens that may include, in order from an object side to an image side along an optical axis, a first lens having positive optical power, an object side of which is convex, a second lens having negative optical power, a third lens having optical power, a fourth lens having optical power, a fifth lens having optical power, an object side of which is concave, a sixth lens having positive optical power, an image side of which is concave, and a seventh lens having optical power.
In one embodiment, the distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length ImgH of the effective pixel area on the imaging surface can meet the condition that TTL/ImgH is less than 1.4.
In one embodiment, the effective focal length f of the optical imaging lens and half of the maximum field angle Semi-FOV of the optical imaging lens may satisfy f tan (Semi-FOV) >5.5mm.
In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter of the optical imaging lens may satisfy f/EPD <1.9.
In one embodiment, the effective focal length f1 of the first lens, the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens of the optical imaging lens may satisfy 0.8< f1/f6+f7/f5<1.8.
In one embodiment, the combined focal length f123 of the first, second and third lenses and the combined focal length f567 of the fifth, sixth and seventh lenses may satisfy-1.0 < f123/f567<0.
In one embodiment, the effective focal length f2 of the second lens element, the radius of curvature R3 of the object-side surface of the second lens element and the radius of curvature R4 of the image-side surface of the second lens element may satisfy 1.0< (R3-R4)/f 2<0.
In one embodiment, the edge thickness ET1 of the first lens and the edge thickness ET5 of the fifth lens may satisfy 0.5< ET1/ET5<1.0.
In one embodiment, the edge thickness ET6 of the sixth lens and the center thickness CT6 of the sixth lens may satisfy 0.5< ET6/CT6<1.0.
In one embodiment, an on-axis distance SAG51 between an intersection of the object side surface of the fifth lens and the optical axis and an effective radius vertex of the object side surface of the fifth lens and an on-axis distance SAG52 between an intersection of the image side surface of the fifth lens and the optical axis and an effective radius vertex of the image side surface of the fifth lens may satisfy 0.5< SAG52/SAG51<1.0.
In one embodiment, an on-axis distance SAG71 between an intersection of the object side surface of the seventh lens and the optical axis and an effective radius vertex of the object side surface of the seventh lens and an on-axis distance SAG72 between an intersection of the image side surface of the seventh lens and the optical axis and an effective radius vertex of the image side surface of the seventh lens may satisfy 0.5< SAG71/SAG72<1.0.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens, the radius of curvature R2 of the image-side surface of the first lens, the radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R12 of the image-side surface of the sixth lens may satisfy 0.2< (R11+R12)/(R2-R1) <0.7.
In one embodiment, the radius of curvature R5 of the object-side surface of the third lens and the radius of curvature R6 of the image-side surface of the third lens may satisfy 0.5< R5/R6<2.0.
In one embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R9 of the object-side surface of the fifth lens may satisfy 0.2< (R7+R9)/(R7-R9) <0.7.
In one embodiment, the radius of curvature R13 of the object-side surface of the seventh lens and the radius of curvature R14 of the image-side surface of the seventh lens may satisfy-1.2 < R14/R13< -0.2.
In one embodiment, the center thickness CT1 of the first lens, the center thickness CT2 of the second lens, the center thickness CT3 of the third lens and the center thickness CT4 of the fourth lens may satisfy 0.7< CT 1/(CT2+CT3+CT4) <1.2.
In one embodiment, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, the air interval T45 of the fourth lens and the fifth lens on the optical axis, the air interval T56 of the fifth lens and the sixth lens on the optical axis, and the air interval T67 of the sixth lens and the seventh lens on the optical axis may satisfy 0.5< (T45+CT5+T56)/(T67+CT7) <1.0.
The optical imaging lens provided by the application adopts a plurality of lenses, such as the first lens to the seventh lens, and can effectively balance various aberrations of the system by reasonably controlling the relation between the image height and the optical total length of the optical imaging lens and reasonably distributing the focal power, so that the system has better imaging capability, meanwhile, the system has the characteristic of ultra-thin, is beneficial to the miniaturization of the system, and in addition, the optical system has the characteristic of high pixels, and can effectively improve the resolution of the system.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
Fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 2 of the present application;
Fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;
Fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
Fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application;
Fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic configuration diagram of an optical imaging lens according to embodiment 5 of the present application;
Fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;
Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
Fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6.
Detailed Description
For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are 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, and 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 closest to the object is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including 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. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application may include seven lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in sequence from the object side to the image side along the optical axis. In the first lens to the seventh lens, each adjacent two lenses may have an air space therebetween.
In an exemplary embodiment, the first lens may have positive power, the object side thereof may be convex, the second lens may have negative power, the third lens may have positive or negative power, the fourth lens may have positive or negative power, the fifth lens may have positive or negative power, the object side thereof may be concave, the sixth lens may have positive power, the image side thereof may be concave, and the seventh lens may have positive or negative power. By reasonably distributing the focal power of the lens, all levels of aberration of the system can be effectively balanced, so that the system has better imaging capability.
In an exemplary embodiment, the image side of the first lens may be concave.
In an exemplary embodiment, the object-side surface of the second lens may be convex and the image-side surface may be concave.
In an exemplary embodiment, the object side surface of the fourth lens may be convex.
In an exemplary embodiment, the object side surface of the sixth lens may be convex.
In an exemplary embodiment, the object-side surface of the seventh lens may be concave, and the image-side surface may be concave.
In an exemplary embodiment, the distance TTL from the object side surface of the first lens of the optical imaging lens to the imaging surface on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens can satisfy TTL/ImgH <1.4. For example, TTL/ImgH.ltoreq.1.35. The distance from the object side surface to the imaging surface of the first lens of the optical imaging lens on the optical axis, the size of half of the diagonal line length of the effective pixel area on the imaging surface of the optical imaging lens and the relation between the two are reasonably controlled, so that the optical imaging system has the characteristic of ultra-thin, and the miniaturization of the system is facilitated.
In an exemplary embodiment, the effective focal length f of the optical imaging lens and half of the maximum field angle Semi-FOV of the optical imaging lens may satisfy f×tan (Semi-FOV) >5.5mm. For example, 5.5mm < f tan (Semi-FOV) <6.0mm. The correlation between the effective focal length of the optical imaging lens and half of the maximum field angle of the optical imaging lens is reasonably controlled, so that the product of the effective focal length of the optical imaging lens and the tangent value of half of the maximum field angle of the optical imaging lens is in a reasonable numerical range, and the optical system can have the characteristic of high pixels, thereby effectively improving the resolution of the system.
In an exemplary embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter of the optical imaging lens may satisfy f/EPD <1.9. For example, 1.84< f/EPD <1.87. By controlling the relation between the effective focal length of the optical imaging lens and the entrance pupil diameter of the optical imaging lens, the clear aperture of the system can be increased, so that a sufficient amount of light can be ensured in a dark environment.
In an exemplary embodiment, the effective focal length f1 of the first lens, the effective focal length f5 of the fifth lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens of the optical imaging lens may satisfy 0.8< f1/f6+f7/f5<1.8. For example, 1.0< f1/f6+f7/f5<1.3. By controlling the effective focal length of the first lens, the effective focal length of the fifth lens, the effective focal length of the sixth lens and the effective focal length of the seventh lens and the relation between the effective focal lengths, the focal power of the lenses can be reasonably distributed, the aberration of the system can be effectively controlled, and therefore the system is guaranteed to have better image quality, and the resolution of the system is improved.
In an exemplary embodiment, the combined focal length f123 of the first, second and third lenses and the combined focal length f567 of the fifth, sixth and seventh lenses may satisfy-1.0 < f123/f567<0. For example, -0.6< f123/f567< -0.2. By controlling the relation between the combined focal length of the first lens, the second lens and the third lens and the combined focal length of the fifth lens, the sixth lens and the seventh lens, the focal power of the front lens group and the back lens group can be reasonably distributed, so that positive and negative spherical aberration generated by the front and back components are mutually counteracted, the system is ensured to have smaller spherical aberration, and the imaging capability of the system is improved.
In an exemplary embodiment, the effective focal length f2 of the second lens element, the radius of curvature R3 of the object-side surface of the second lens element and the radius of curvature R4 of the image-side surface of the second lens element may satisfy 1.0< (R3-R4)/f 2<0. For example, -0.5< (R3-R4)/f 2< -0.3. The shape of the second lens can be effectively controlled by controlling the relation among the effective focal length of the two lenses, the curvature radius of the object side surface of the second lens and the curvature radius of the image side surface of the second lens, and the processability of the second lens is ensured, so that the forming and the assembling are facilitated, and the imaging capability of the system is improved.
In an exemplary embodiment, the edge thickness ET1 of the first lens and the edge thickness ET5 of the fifth lens may satisfy 0.5< ET1/ET5<1.0. For example, 0.6< ET1/ET5<0.9. By controlling the relationship between the edge thickness of the first lens and the edge thickness of the fifth lens, the workability of the first lens and the fifth lens can be ensured, thereby facilitating molding and assembly, and improving the imaging capability of the system.
In an exemplary embodiment, the edge thickness ET6 of the sixth lens and the center thickness CT6 of the sixth lens may satisfy 0.5< ET6/CT6<1.0. For example, 0.6< ET6/CT6<0.8. By controlling the relation between the edge thickness of the sixth lens and the center thickness of the sixth lens, the shape of the sixth lens can be effectively controlled, the lens processability is improved, and the edge view ray trend can be effectively controlled, so that the system can be better matched with the chip.
In an exemplary embodiment, an on-axis distance SAG51 between an intersection of the fifth lens object side surface and the optical axis to an effective radius vertex of the fifth lens object side surface and an on-axis distance SAG52 between an intersection of the fifth lens image side surface and the optical axis to an effective radius vertex of the fifth lens image side surface may satisfy 0.5< SAG52/SAG51<1.0. For example, 0.7< SAG52/SAG51<1.0. By controlling the relationship between the on-axis distance between the intersection point of the fifth lens object-side surface and the optical axis and the effective radius vertex of the fifth lens object-side surface and the on-axis distance between the intersection point of the fifth lens image-side surface and the optical axis and the effective radius vertex of the fifth lens image-side surface, the shape of the fifth lens can be effectively controlled, the processability of the fifth lens is improved, the molding and the assembly of the lens are facilitated, and the resolution of the optical system is improved.
In an exemplary embodiment, an on-axis distance SAG71 between an intersection of the seventh lens object side and the optical axis to an effective radius vertex of the seventh lens object side and an on-axis distance SAG72 between an intersection of the seventh lens image side and the optical axis to an effective radius vertex of the seventh lens image side may satisfy 0.5< SAG71/SAG72<1.0. For example, 0.8< SAG71/SAG72<1.0. By controlling the relationship between the on-axis distance between the intersection point of the seventh lens object-side surface and the optical axis and the effective radius vertex of the seventh lens object-side surface and the on-axis distance between the intersection point of the seventh lens image-side surface and the optical axis and the effective radius vertex of the seventh lens image-side surface, the shape of the seventh lens can be effectively controlled, the ghost is reduced, and the molding, the processing and the demolding of the lens are facilitated.
In an exemplary embodiment, the radius of curvature R1 of the first lens object-side surface, the radius of curvature R2 of the first lens image-side surface, the radius of curvature R11 of the sixth lens object-side surface, and the radius of curvature R12 of the sixth lens image-side surface may satisfy 0.2< (R11+R12)/(R2-R1) <0.7. For example, 0.3< (R11+R12)/(R2-R1) <0.5. By controlling the relationship among the curvature radius of the object side surface of the first lens, the curvature radius of the image side surface of the first lens, the curvature radius of the object side surface of the sixth lens and the curvature radius of the image side surface of the sixth lens, the shapes of the first lens and the sixth lens can be effectively controlled, and further the deflection angle of the system light beam at the first lens and the sixth lens is controlled, so that good processing performance of the system is realized, and the system is better matched with a chip.
In an exemplary embodiment, the radius of curvature R5 of the third lens object-side surface and the radius of curvature R6 of the third lens image-side surface may satisfy 0.5< R5/R6<2.0. For example, 0.8< R5/R6<2.0. By controlling the relation between the curvature radius of the object side surface of the third lens and the curvature radius of the image side surface of the third lens, the shape of the third lens can be effectively controlled, the deflection angle of the system light beam at the third lens is further controlled, and the sensitivity of the system is effectively reduced.
In an exemplary embodiment, the radius of curvature R7 of the fourth lens object-side surface and the radius of curvature R9 of the fifth lens object-side surface may satisfy 0.2< (R7+R9)/(R7-R9) <0.7. For example, 0.3< (R7+R9)/(R7-R9) <0.6. By controlling the relation between the curvature radius of the object side surface of the fourth lens and the curvature radius of the object side surface of the fifth lens, the contribution of the fourth lens and the fifth lens to the spherical aberration can be well controlled, so that the system has smaller spherical aberration and has better imaging capability.
In an exemplary embodiment, the radius of curvature R13 of the seventh lens object-side surface and the radius of curvature R14 of the seventh lens image-side surface may satisfy-1.2 < R14/R13< -0.2. For example, -1< R14/R13< -0.4. By controlling the relation between the curvature radius of the object side surface of the seventh lens and the curvature radius of the image side surface of the seventh lens, the contribution of the seventh lens to the aberrations such as spherical aberration and coma aberration can be reduced well, so that the aberrations of the balance system are easier, and the imaging quality of the system is improved.
In an exemplary embodiment, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, the center thickness CT3 of the third lens on the optical axis, and the center thickness CT4 of the fourth lens on the optical axis may satisfy 0.7< CT 1/(CT2+CT3+CT4) <1.2. For example, 0.8< ct1/(CT 2+ CT3+ CT 4) <1.0. By controlling the relation among the central thickness of the first lens on the optical axis, the central thickness of the second lens on the optical axis, the central thickness of the third lens on the optical axis and the central thickness of the fourth lens on the optical axis, the central thicknesses of the first four lenses can be reasonably distributed, the contribution of each lens to field curvature is effectively balanced, and therefore each view field has good image quality.
In an exemplary embodiment, the center thickness CT5 of the fifth lens on the optical axis, the center thickness CT7 of the seventh lens on the optical axis, the air interval T45 of the fourth lens and the fifth lens on the optical axis, the air interval T56 of the fifth lens and the sixth lens on the optical axis, and the air interval T67 of the sixth lens and the seventh lens on the optical axis may satisfy 0.5< (T45+CT5+T56)/(T67+CT7) <1.0. For example, 0.6< (t45+ct5+t56)/(t67+ct7) <0.8. By controlling the relation among the center thickness of the fifth lens on the optical axis, the center thickness of the seventh lens on the optical axis, the air interval of the fourth lens and the fifth lens on the optical axis, the air interval of the fifth lens and the sixth lens on the optical axis and the air interval of the sixth lens and the seventh lens on the optical axis, the center thicknesses of the lenses and the intervals between the lenses can be reasonably distributed, so that the system is compact, the field curvature can be effectively controlled, the field curvature of the system is ensured to be in a smaller range, and the imaging quality of the system is further ensured.
In an exemplary embodiment, the optical imaging lens may further include a diaphragm. The diaphragm may be provided at an appropriate position as required. For example, a diaphragm may be provided between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface.
The application provides an optical imaging lens with the characteristics of large image plane, large aperture, ultra-thin and the like. The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, seven lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, incident light rays can be effectively converged, the optical total length of the imaging lens is reduced, and the processability of the imaging lens is improved, so that the optical imaging lens is more beneficial to production and processing.
In an exemplary embodiment, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface of the first lens to the image side surface of the seventh lens is an aspherical mirror. The aspherical lens is characterized in that the curvature is continuously changed 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 a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are aspherical mirror surfaces.
The present application also provides an image forming apparatus, in which the electron-sensitive element may be a photosensitive coupling 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 an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although seven lenses are described as an example in the embodiment, the optical imaging lens is not limited to include seven lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens sequentially comprises a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an optical filter E8 and an imaging surface S17 from an object side to an image side along an optical axis.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this embodiment, the total effective focal length f=6.69 mm of the optical imaging lens, the distance ttl=7.78 mm on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17, half of the diagonal length imgh=5.75 mm of the effective pixel area on the imaging surface S17, and the maximum half field angle Semi-fov=40.2° of the optical imaging lens.
Table 1 shows the basic parameter table of the optical imaging lens of embodiment 1, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm).
TABLE 1
In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the seventh lens E7 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
Where x is the distance vector height of the aspherical surface at a position h in the optical axis direction from the apex of the aspherical surface, c is the paraxial curvature of the aspherical surface, c=1/R (i.e., paraxial curvature c is the reciprocal of the radius of curvature R in table 1 above), k is a conic coefficient, and Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16 that can be used for each of the aspherical mirrors S1-S14 in example 1, and Table 3 shows the higher order coefficients A 18、A20、A22、A24、A26、A28 and A 30 that can be used for each of the aspherical mirrors S1-S14 in example 1.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.4047E-03 | -1.7430E-03 | 4.7765E-03 | -6.1696E-03 | 4.6470E-03 | -2.1244E-03 | 5.7815E-04 |
| S2 | -2.2599E-02 | 2.3801E-02 | -2.0226E-02 | 1.5597E-02 | -1.0151E-02 | 4.7123E-03 | -1.3933E-03 |
| S3 | -1.8984E-02 | 2.3432E-02 | -1.0645E-02 | 1.2965E-03 | 1.3535E-03 | -7.6441E-04 | 1.7282E-04 |
| S4 | -2.0211E-02 | 2.5338E-02 | -2.0103E-02 | 1.8776E-02 | -1.6168E-02 | 1.0142E-02 | -3.9981E-03 |
| S5 | -1.6217E-02 | -3.6499E-03 | 9.2828E-03 | -1.2209E-02 | 5.4341E-03 | 7.3372E-04 | -1.7949E-03 |
| S6 | -2.1385E-02 | -2.7577E-02 | 1.6732E-01 | -5.5691E-01 | 1.2166E+00 | -1.8305E+00 | 1.9495E+00 |
| S7 | -2.3512E-02 | -4.0304E-02 | 1.0653E-01 | -1.7245E-01 | 1.8689E-01 | -1.3751E-01 | 6.9380E-02 |
| S8 | -8.4673E-03 | -2.4995E-02 | 3.2001E-02 | -3.7070E-02 | 3.6146E-02 | -2.7824E-02 | 1.6223E-02 |
| S9 | 9.1585E-02 | -8.6814E-02 | 6.7758E-02 | -4.4683E-02 | 2.5130E-02 | -1.2543E-02 | 5.3082E-03 |
| S10 | -7.9587E-03 | -1.1402E-02 | 4.6688E-03 | 1.0469E-02 | -1.3975E-02 | 8.5182E-03 | -3.2494E-03 |
| S11 | -8.0287E-02 | 1.5791E-02 | -5.7573E-03 | 3.6906E-03 | -1.8026E-03 | 5.2628E-04 | -9.4367E-05 |
| S12 | 8.1459E-03 | -3.5752E-02 | 2.0109E-02 | -6.8124E-03 | 1.5401E-03 | -2.4054E-04 | 2.6247E-05 |
| S13 | -2.8425E-02 | 9.0064E-04 | 9.9079E-04 | 1.5355E-04 | -1.3436E-04 | 2.9167E-05 | -3.4357E-06 |
| S14 | -3.1220E-02 | -2.2147E-04 | 2.2259E-03 | -7.7270E-04 | 1.5404E-04 | -2.0290E-05 | 1.8266E-06 |
TABLE 2
| Face number | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -8.6643E-05 | 5.4726E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 2.3256E-04 | -1.6623E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -1.3867E-05 | -2.1545E-07 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 8.8916E-04 | -8.4415E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 7.0904E-04 | -9.5616E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -1.4926E+00 | 8.2474E-01 | -3.2601E-01 | 8.9886E-02 | -1.6413E-02 | 1.7831E-03 | -8.7206E-05 |
| S7 | -2.3919E-02 | 5.5320E-03 | -8.2134E-04 | 7.0847E-05 | -2.7035E-06 | 0.0000E+00 | 0.0000E+00 |
| S8 | -6.9646E-03 | 2.1604E-03 | -4.7496E-04 | 7.1870E-05 | -7.1056E-06 | 4.1308E-07 | -1.0714E-08 |
| S9 | -1.7582E-03 | 4.2872E-04 | -7.3601E-05 | 8.4860E-06 | -6.1184E-07 | 2.4091E-08 | -3.6884E-10 |
| S10 | 8.4756E-04 | -1.5557E-04 | 2.0102E-05 | -1.7893E-06 | 1.0438E-07 | -3.5897E-09 | 5.5146E-11 |
| S11 | 1.0781E-05 | -7.9148E-07 | 3.6272E-08 | -9.4686E-10 | 1.0771E-11 | 0.0000E+00 | 0.0000E+00 |
| S12 | -1.9879E-06 | 1.0191E-07 | -3.3483E-09 | 6.2476E-11 | -4.5765E-13 | -1.3305E-15 | 0.0000E+00 |
| S13 | 2.5075E-07 | -1.1652E-08 | 3.3417E-10 | -5.3017E-12 | 3.3617E-14 | -2.3866E-17 | 2.0421E-18 |
| S14 | -1.1284E-07 | 4.6913E-09 | -1.2459E-10 | 1.8867E-12 | -1.2563E-14 | 3.8545E-17 | -9.1299E-19 |
TABLE 3 Table 3
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. Fig. 3 shows a schematic configuration of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an optical filter E8, and an imaging surface S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the total effective focal length f=6.69 mm of the optical imaging lens, the distance ttl=7.76 mm on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17, half of the diagonal length imgh=5.75 mm of the effective pixel area on the imaging surface S17, and the maximum half field angle Semi-fov=40.2° of the optical imaging lens.
Table 4 shows the basic parameter table of the optical imaging lens of embodiment 2, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm).
TABLE 4 Table 4
In embodiment 2, the object side surface and the image side surface of any one of the first to seventh lenses E1 to E7 are aspherical surfaces. Table 5 below shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16 that can be used for each of the aspherical mirrors S1-S14 in example 2, and Table 6 shows the higher order coefficients A 18、A20、A22、A24、A26、A28 and A 30 that can be used for each of the aspherical mirrors S1-S14 in example 2.
TABLE 5
| Face number | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -6.8115E-05 | 4.5371E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.0513E-04 | -5.9836E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -2.8005E-04 | 2.3301E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 1.5320E-03 | -1.5395E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 2.5195E-03 | -2.7129E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -3.3842E+00 | 1.9860E+00 | -8.2933E-01 | 2.4037E-01 | -4.5934E-02 | 5.2020E-03 | -2.6432E-04 |
| S7 | -1.0382E-02 | 2.3222E-03 | -3.3838E-04 | 2.9249E-05 | -1.1450E-06 | 0.0000E+00 | 0.0000E+00 |
| S8 | -1.7298E-02 | 6.2664E-03 | -1.6128E-03 | 2.8723E-04 | -3.3619E-05 | 2.3248E-06 | -7.1920E-08 |
| S9 | 3.0076E-03 | -1.0133E-03 | 2.2852E-04 | -3.4712E-05 | 3.4150E-06 | -1.9655E-07 | 5.0206E-09 |
| S10 | -2.6524E-05 | -7.5471E-06 | 2.2741E-06 | -2.9626E-07 | 2.1701E-08 | -8.6835E-10 | 1.4841E-11 |
| S11 | 1.1486E-05 | -7.8427E-07 | 3.4010E-08 | -8.4903E-10 | 9.3000E-12 | 0.0000E+00 | 0.0000E+00 |
| S12 | -1.8885E-06 | 1.0802E-07 | -4.0102E-09 | 8.6987E-11 | -8.3683E-13 | 0.0000E+00 | 0.0000E+00 |
| S13 | 2.6043E-07 | -1.3431E-08 | 4.3309E-10 | -7.9837E-12 | 6.4394E-14 | 0.0000E+00 | 0.0000E+00 |
| S14 | 5.9345E-08 | -2.9194E-09 | 9.1354E-11 | -1.6465E-12 | 1.3019E-14 | 0.0000E+00 | 0.0000E+00 |
TABLE 6
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic configuration diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an optical filter E8, and an imaging surface S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the total effective focal length f=6.69 mm of the optical imaging lens, the distance ttl=7.76 mm on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17, half of the diagonal length imgh=5.75 mm of the effective pixel area on the imaging surface S17, and the maximum half field angle Semi-fov=40.2° of the optical imaging lens.
Table 7 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm).
TABLE 7
In embodiment 3, the object side surface and the image side surface of any one of the first to seventh lenses E1 to E7 are aspherical surfaces. Table 8 below shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16 that can be used for each of the aspherical mirrors S1-S14 in example 3, and Table 9 shows the higher order coefficients A 18、A20、A22、A24、A26、A28 and A 30 that can be used for each of the aspherical mirrors S1-S14 in example 3.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.2709E-03 | -6.8348E-04 | 2.6235E-03 | -3.7920E-03 | 3.1063E-03 | -1.5226E-03 | 4.4005E-04 |
| S2 | -3.1343E-02 | 3.8481E-02 | -3.2781E-02 | 2.1233E-02 | -1.0551E-02 | 3.7405E-03 | -8.6570E-04 |
| S3 | -2.2086E-02 | 3.3096E-02 | -1.9576E-02 | 3.4861E-03 | 4.1976E-03 | -3.8480E-03 | 1.5327E-03 |
| S4 | -1.6012E-02 | 2.2387E-02 | -1.9308E-02 | 2.0141E-02 | -1.9291E-02 | 1.3235E-02 | -5.6382E-03 |
| S5 | -1.6111E-02 | 8.5954E-04 | -5.0533E-03 | 1.1767E-02 | -1.9178E-02 | 1.6843E-02 | -8.2993E-03 |
| S6 | -1.9682E-02 | -3.1638E-02 | 2.2669E-01 | -8.4767E-01 | 2.0153E+00 | -3.2483E+00 | 3.6710E+00 |
| S7 | -2.2145E-02 | -2.1675E-02 | 5.5643E-02 | -8.6702E-02 | 9.0476E-02 | -6.4490E-02 | 3.1670E-02 |
| S8 | -9.3861E-03 | -2.1671E-02 | 3.0817E-02 | -4.3419E-02 | 5.2181E-02 | -4.8637E-02 | 3.3565E-02 |
| S9 | 7.7950E-02 | -8.3005E-02 | 6.7948E-02 | -3.9404E-02 | 1.0557E-02 | 4.0391E-03 | -5.8183E-03 |
| S10 | -3.0806E-02 | 2.2836E-04 | 1.5864E-02 | -1.5178E-02 | 7.6269E-03 | -2.3528E-03 | 4.1259E-04 |
| S11 | -9.9389E-02 | 4.3159E-02 | -2.3610E-02 | 1.0316E-02 | -3.3230E-03 | 7.4909E-04 | -1.1501E-04 |
| S12 | 3.9841E-03 | -2.5281E-02 | 1.3576E-02 | -4.6472E-03 | 1.1017E-03 | -1.8487E-04 | 2.2027E-05 |
| S13 | -3.7180E-02 | 3.4696E-03 | 7.8576E-04 | -1.1476E-05 | -7.7552E-05 | 2.0914E-05 | -2.8030E-06 |
| S14 | -4.2368E-02 | 6.7412E-03 | -1.0985E-03 | 2.4115E-04 | -5.0894E-05 | 7.9046E-06 | -8.4605E-07 |
TABLE 8
| Face number | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -6.9790E-05 | 4.6467E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.1529E-04 | -6.6292E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -3.0904E-04 | 2.5613E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 1.3404E-03 | -1.3482E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 2.1920E-03 | -2.4180E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -2.9609E+00 | 1.7128E+00 | -7.0482E-01 | 2.0129E-01 | -3.7901E-02 | 4.2293E-03 | -2.1174E-04 |
| S7 | -1.0695E-02 | 2.4534E-03 | -3.6806E-04 | 3.2788E-05 | -1.3198E-06 | 0.0000E+00 | 0.0000E+00 |
| S8 | -1.6840E-02 | 6.0839E-03 | -1.5613E-03 | 2.7723E-04 | -3.2353E-05 | 2.2307E-06 | -6.8805E-08 |
| S9 | 3.1537E-03 | -1.0595E-03 | 2.3901E-04 | -3.6364E-05 | 3.5859E-06 | -2.0697E-07 | 5.3033E-09 |
| S10 | -1.5590E-05 | -1.0902E-05 | 2.9049E-06 | -3.7093E-07 | 2.7150E-08 | -1.0930E-09 | 1.8853E-11 |
| S11 | 1.1895E-05 | -8.1481E-07 | 3.5456E-08 | -8.8833E-10 | 9.7673E-12 | 0.0000E+00 | 0.0000E+00 |
| S12 | -1.8419E-06 | 1.0521E-07 | -3.8999E-09 | 8.4485E-11 | -8.1205E-13 | 0.0000E+00 | 0.0000E+00 |
| S13 | 2.2792E-07 | -1.1762E-08 | 3.7828E-10 | -6.9421E-12 | 5.5677E-14 | 0.0000E+00 | 0.0000E+00 |
| S14 | 6.1367E-08 | -2.9586E-09 | 9.0807E-11 | -1.6068E-12 | 1.2486E-14 | 0.0000E+00 | 0.0000E+00 |
TABLE 9
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an optical filter E8, and an imaging surface S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave and an image-side surface S6 thereof is convex. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the total effective focal length f=6.69 mm of the optical imaging lens, the distance ttl=7.74 mm on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17, half of the diagonal length imgh=5.75 mm of the effective pixel area on the imaging surface S17, and the maximum half field angle Semi-fov=40.2° of the optical imaging lens.
Table 10 shows a basic parameter table of the optical imaging lens of example 4, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm).
Table 10
In embodiment 4, the object side surface and the image side surface of any one of the first to seventh lenses E1 to E7 are aspherical surfaces. Table 11 below shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16 that can be used for each of the aspherical mirrors S1-S14 in example 4, and Table 12 shows the higher order coefficients A 18、A20、A22、A24、A26、A28 and A 30 that can be used for each of the aspherical mirrors S1-S14 in example 4.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.0699E-03 | -1.9446E-04 | 1.8860E-03 | -3.0503E-03 | 2.6099E-03 | -1.3056E-03 | 3.8126E-04 |
| S2 | -3.2605E-02 | 4.0827E-02 | -3.5473E-02 | 2.3435E-02 | -1.1877E-02 | 4.2945E-03 | -1.0137E-03 |
| S3 | -2.3400E-02 | 3.4639E-02 | -1.9054E-02 | 2.5566E-04 | 8.0015E-03 | -6.1808E-03 | 2.3519E-03 |
| S4 | -1.7376E-02 | 2.7669E-02 | -3.3834E-02 | 4.7921E-02 | -5.2848E-02 | 3.8190E-02 | -1.6701E-02 |
| S5 | -1.5650E-02 | 3.8352E-03 | -2.3733E-02 | 5.2018E-02 | -6.7698E-02 | 5.1961E-02 | -2.3457E-02 |
| S6 | -1.6869E-02 | -3.9019E-02 | 2.6152E-01 | -9.9986E-01 | 2.4497E+00 | -4.0731E+00 | 4.7501E+00 |
| S7 | -2.0148E-02 | -2.4708E-02 | 6.3628E-02 | -1.0431E-01 | 1.1500E-01 | -8.6316E-02 | 4.4454E-02 |
| S8 | -9.0564E-03 | -1.9874E-02 | 2.7686E-02 | -4.0751E-02 | 5.0807E-02 | -4.8171E-02 | 3.3438E-02 |
| S9 | 7.6017E-02 | -7.4151E-02 | 5.0466E-02 | -1.8601E-02 | -5.7866E-03 | 1.2908E-02 | -9.2328E-03 |
| S10 | -2.9879E-02 | 9.3966E-04 | 1.3084E-02 | -1.1688E-02 | 5.2175E-03 | -1.3174E-03 | 1.2579E-04 |
| S11 | -9.8552E-02 | 4.0954E-02 | -2.1907E-02 | 9.5705E-03 | -3.1115E-03 | 7.0800E-04 | -1.0940E-04 |
| S12 | 3.4768E-03 | -2.5502E-02 | 1.3658E-02 | -4.6187E-03 | 1.0766E-03 | -1.7736E-04 | 2.0755E-05 |
| S13 | -3.7415E-02 | 3.7231E-03 | 6.3140E-04 | 4.8217E-05 | -9.2551E-05 | 2.3429E-05 | -3.0890E-06 |
| S14 | -4.4116E-02 | 7.9272E-03 | -1.5107E-03 | 3.2881E-04 | -6.3033E-05 | 9.0503E-06 | -9.2340E-07 |
TABLE 11
Table 12
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic configuration of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an optical filter E8, and an imaging surface S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the total effective focal length f=6.69 mm of the optical imaging lens, the distance ttl=7.75 mm on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17, half of the diagonal length imgh=5.75 mm of the effective pixel area on the imaging surface S17, and the maximum half field angle Semi-fov=40.2° of the optical imaging lens.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm).
TABLE 13
In embodiment 5, the object side surface and the image side surface of any one of the first to seventh lenses E1 to E7 are aspherical surfaces. Table 14 below shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16 that can be used for each of the aspherical mirrors S1-S14 in example 5, and Table 15 shows the higher order coefficients A 18、A20、A22、A24、A26、A28 and A 30 that can be used for each of the aspherical mirrors S1-S14 in example 5.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.3478E-03 | -1.1982E-03 | 3.6638E-03 | -4.9328E-03 | 3.8599E-03 | -1.8332E-03 | 5.1806E-04 |
| S2 | -3.1288E-02 | 3.8379E-02 | -3.2666E-02 | 2.1140E-02 | -1.0495E-02 | 3.7175E-03 | -8.5961E-04 |
| S3 | -2.3465E-02 | 3.5563E-02 | -2.3206E-02 | 7.7705E-03 | 7.0595E-04 | -2.0186E-03 | 9.5128E-04 |
| S4 | -1.7807E-02 | 2.3745E-02 | -1.9381E-02 | 2.0844E-02 | -2.2264E-02 | 1.6875E-02 | -7.7554E-03 |
| S5 | -1.6493E-02 | 2.8372E-03 | -1.6663E-02 | 3.5806E-02 | -4.7022E-02 | 3.6195E-02 | -1.6302E-02 |
| S6 | -1.7804E-02 | -3.4475E-02 | 2.4572E-01 | -9.5337E-01 | 2.3344E+00 | -3.8611E+00 | 4.4729E+00 |
| S7 | -1.9172E-02 | -2.5927E-02 | 6.1534E-02 | -9.6415E-02 | 1.0151E-01 | -7.2501E-02 | 3.5343E-02 |
| S8 | -8.4645E-03 | -2.1803E-02 | 2.9263E-02 | -4.2928E-02 | 5.4287E-02 | -5.2351E-02 | 3.6905E-02 |
| S9 | 7.7761E-02 | -6.9292E-02 | 3.6606E-02 | 9.0766E-06 | -2.1094E-02 | 2.1125E-02 | -1.2144E-02 |
| S10 | -3.2974E-02 | 6.9896E-03 | 6.1537E-03 | -5.9112E-03 | 1.9094E-03 | -4.3934E-05 | -2.0128E-04 |
| S11 | -1.0345E-01 | 4.5777E-02 | -2.5262E-02 | 1.1181E-02 | -3.6406E-03 | 8.2563E-04 | -1.2706E-04 |
| S12 | 3.7421E-03 | -2.5107E-02 | 1.3076E-02 | -4.3081E-03 | 9.7738E-04 | -1.5628E-04 | 1.7685E-05 |
| S13 | -3.9779E-02 | 7.1389E-03 | -1.6174E-03 | 8.8926E-04 | -2.8927E-04 | 5.3792E-05 | -6.2675E-06 |
| S14 | -4.4573E-02 | 8.4413E-03 | -1.7024E-03 | 3.5919E-04 | -6.3340E-05 | 8.4114E-06 | -8.1406E-07 |
TABLE 14
| Face number | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -8.0706E-05 | 5.2996E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.1437E-04 | -6.5710E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -2.0769E-04 | 1.8207E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 1.9496E-03 | -2.0493E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 4.0152E-03 | -4.1876E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -3.6974E+00 | 2.1920E+00 | -9.2453E-01 | 2.7062E-01 | -5.2230E-02 | 5.9736E-03 | -3.0654E-04 |
| S7 | -1.1696E-02 | 2.5881E-03 | -3.6863E-04 | 3.0791E-05 | -1.1549E-06 | 0.0000E+00 | 0.0000E+00 |
| S8 | -1.8799E-02 | 6.8804E-03 | -1.7877E-03 | 3.2137E-04 | -3.7969E-05 | 2.6503E-06 | -8.2761E-08 |
| S9 | 4.7528E-03 | -1.3246E-03 | 2.6409E-04 | -3.6860E-05 | 3.4172E-06 | -1.8856E-07 | 4.6728E-09 |
| S10 | 8.9085E-05 | -2.1151E-05 | 3.1848E-06 | -3.1202E-07 | 1.9316E-08 | -6.8755E-10 | 1.0739E-11 |
| S11 | 1.3138E-05 | -8.9787E-07 | 3.8904E-08 | -9.6872E-10 | 1.0566E-11 | 0.0000E+00 | 0.0000E+00 |
| S12 | -1.3983E-06 | 7.4992E-08 | -2.5828E-09 | 5.1245E-11 | -4.4290E-13 | 0.0000E+00 | 0.0000E+00 |
| S13 | 4.7721E-07 | -2.3834E-08 | 7.5479E-10 | -1.3777E-11 | 1.1059E-13 | 0.0000E+00 | 0.0000E+00 |
| S14 | 5.5994E-08 | -2.6468E-09 | 8.1399E-11 | -1.4632E-12 | 1.1646E-14 | 0.0000E+00 | 0.0000E+00 |
TABLE 15
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an optical filter E8, and an imaging surface S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In the present embodiment, the total effective focal length f=6.69 mm of the optical imaging lens, the distance ttl=7.75 mm on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S17, half of the diagonal length imgh=5.75 mm of the effective pixel area on the imaging surface S17, and the maximum half field angle Semi-fov=40.1° of the optical imaging lens.
Table 16 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm).
Table 16
In embodiment 6, the object side surface and the image side surface of any one of the first to seventh lenses E1 to E7 are aspherical surfaces. Table 17 below shows the higher order coefficients A 4、A6、A8、A10、A12、A14、A16 that can be used for each of the aspherical mirrors S1-S14 in example 6, and Table 18 shows the higher order coefficients A 18、A20、A22、A24、A26、A28 and A 30 that can be used for each of the aspherical mirrors S1-S14 in example 6.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | 1.3116E-03 | -8.2731E-04 | 4.3965E-03 | -6.8576E-03 | 5.7542E-03 | -2.8452E-03 | 8.2712E-04 |
| S2 | -3.1546E-02 | 3.8855E-02 | -3.3206E-02 | 2.1579E-02 | -1.0757E-02 | 3.8259E-03 | -8.8832E-04 |
| S3 | -2.3682E-02 | 3.2325E-02 | -2.2342E-02 | 1.1226E-02 | -3.8517E-03 | 8.0552E-04 | -3.0245E-05 |
| S4 | -1.3565E-02 | 2.3006E-02 | -3.9330E-02 | 6.3085E-02 | -6.6958E-02 | 4.5049E-02 | -1.8415E-02 |
| S5 | -1.9976E-02 | 2.7616E-02 | -7.7670E-02 | 1.1975E-01 | -1.2160E-01 | 7.9335E-02 | -3.1875E-02 |
| S6 | -1.2112E-02 | -3.9554E-02 | 2.6395E-01 | -9.6465E-01 | 2.2595E+00 | -3.6306E+00 | 4.1244E+00 |
| S7 | -1.2607E-02 | -7.1878E-02 | 1.9053E-01 | -3.0542E-01 | 3.2375E-01 | -2.3471E-01 | 1.1788E-01 |
| S8 | -2.0932E-02 | -1.1405E-02 | 1.9315E-02 | -3.5185E-02 | 4.9187E-02 | -4.9044E-02 | 3.4792E-02 |
| S9 | 6.3278E-02 | -3.7635E-02 | -1.9304E-02 | 7.0882E-02 | -8.3146E-02 | 5.8650E-02 | -2.7948E-02 |
| S10 | -2.6884E-02 | -1.1141E-02 | 3.0615E-02 | -2.4440E-02 | 1.0819E-02 | -2.9655E-03 | 4.8489E-04 |
| S11 | -9.4977E-02 | 3.2859E-02 | -1.3895E-02 | 5.1850E-03 | -1.6772E-03 | 4.1093E-04 | -6.9021E-05 |
| S12 | 5.5765E-03 | -2.7829E-02 | 1.5561E-02 | -5.6086E-03 | 1.3936E-03 | -2.4321E-04 | 2.9984E-05 |
| S13 | -3.8420E-02 | 4.8281E-03 | 9.8182E-05 | 1.9258E-04 | -1.1593E-04 | 2.5691E-05 | -3.2051E-06 |
| S14 | -4.7868E-02 | 1.0554E-02 | -2.3384E-03 | 4.8114E-04 | -7.7770E-05 | 9.2049E-06 | -7.8459E-07 |
TABLE 17
| Face number | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.3173E-04 | 8.8186E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S2 | 1.1868E-04 | -6.8465E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -2.3565E-05 | 3.7039E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 4.1893E-03 | -4.0620E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S5 | 7.1945E-03 | -6.9962E-04 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S6 | -3.3597E+00 | 1.9674E+00 | -8.2044E-01 | 2.3754E-01 | -4.5349E-02 | 5.1306E-03 | -2.6043E-04 |
| S7 | -4.0902E-02 | 9.6238E-03 | -1.4673E-03 | 1.3091E-04 | -5.1918E-06 | 0.0000E+00 | 0.0000E+00 |
| S8 | -1.7666E-02 | 6.4262E-03 | -1.6585E-03 | 2.9612E-04 | -3.4747E-05 | 2.4089E-06 | -7.4712E-08 |
| S9 | 9.4000E-03 | -2.2673E-03 | 3.9132E-04 | -4.7315E-05 | 3.8156E-06 | -1.8460E-07 | 4.0553E-09 |
| S10 | -2.9897E-05 | -5.8076E-06 | 1.7421E-06 | -2.1785E-07 | 1.5413E-08 | -6.0113E-10 | 1.0096E-11 |
| S11 | 7.7049E-06 | -5.6183E-07 | 2.5749E-08 | -6.7430E-10 | 7.7074E-12 | 0.0000E+00 | 0.0000E+00 |
| S12 | -2.5886E-06 | 1.5254E-07 | -5.8288E-09 | 1.2996E-10 | -1.2826E-12 | 0.0000E+00 | 0.0000E+00 |
| S13 | 2.5086E-07 | -1.2633E-08 | 3.9915E-10 | -7.2246E-12 | 5.7286E-14 | 0.0000E+00 | 0.0000E+00 |
| S14 | 4.7562E-08 | -1.9993E-09 | 5.5411E-11 | -9.1115E-13 | 6.7347E-15 | 0.0000E+00 | 0.0000E+00 |
TABLE 18
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.
In summary, examples 1 to 6 satisfy the relationships shown in table 19, respectively.
| Condition/example | 1 | 2 | 3 | 4 | 5 | 6 |
| f/EPD | 1.85 | 1.85 | 1.85 | 1.85 | 1.85 | 1.86 |
| TTL/ImgH | 1.35 | 1.35 | 1.35 | 1.35 | 1.35 | 1.35 |
| f×tan(Semi-FOV)(mm) | 5.65 | 5.65 | 5.65 | 5.65 | 5.65 | 5.64 |
| f1/f6+f7/f5 | 1.04 | 1.22 | 1.20 | 1.23 | 1.36 | 1.23 |
| f123/f567 | -0.43 | -0.52 | -0.53 | -0.56 | -0.54 | -0.23 |
| (R3-R4)/f2 | -0.41 | -0.35 | -0.33 | -0.34 | -0.36 | -0.47 |
| ET1/ET5 | 0.81 | 0.70 | 0.74 | 0.68 | 0.62 | 0.79 |
| ET6/CT6 | 0.74 | 0.64 | 0.65 | 0.64 | 0.64 | 0.63 |
| SAG52/SAG51 | 0.98 | 0.90 | 0.94 | 0.87 | 0.78 | 0.97 |
| SAG71/SAG72 | 0.86 | 0.90 | 0.90 | 0.88 | 0.87 | 0.88 |
| (R11+R12)/(R2-R1) | 0.44 | 0.44 | 0.45 | 0.43 | 0.43 | 0.37 |
| R5/R6 | 0.99 | 0.98 | 1.92 | 0.83 | 0.83 | 0.80 |
| (R7+R9)/(R7-R9) | 0.46 | 0.45 | 0.37 | 0.43 | 0.52 | 0.55 |
| R14/R13 | -0.98 | -0.48 | -0.47 | -0.47 | -0.48 | -0.46 |
| CT1/(CT2+CT3+CT4) | 0.91 | 0.90 | 0.90 | 0.91 | 0.89 | 0.96 |
| (T45+CT5+T56)/(T67+CT7) | 0.77 | 0.79 | 0.79 | 0.79 | 0.77 | 0.63 |
TABLE 19
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (13)
1. An optical imaging lens, comprising, in order from an object side to an image side along an optical axis:
The first lens with positive focal power has a convex object side surface and a concave image side surface;
a second lens element with negative refractive power having a convex object-side surface and a concave image-side surface;
A third lens having optical power;
A fourth lens with optical power, the object side surface of which is a convex surface;
a fifth lens with negative focal power, the object side surface of which is a concave surface;
a sixth lens element with positive refractive power having a convex object-side surface and a concave image-side surface, and
A seventh lens element with negative refractive power having a concave object-side surface and a concave image-side surface;
at least one of the third lens and the fourth lens has positive optical power;
the number of lenses with focal power in the optical imaging lens is seven;
an effective focal length f1 of the first lens, an effective focal length f5 of the fifth lens, an effective focal length f6 of the sixth lens, and an effective focal length f7 of the seventh lens satisfy:
1.0< f1/f6+f7/f5≤1.36;
The effective focal length f of the optical imaging lens and half of the Semi-FOV of the maximum field angle of the optical imaging lens satisfy the following conditions:
5.5 mm<f*tan(Semi-FOV)≤5.65 mm;
the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R9 of the object-side surface of the fifth lens satisfy:
(R7+R9)/(R7-R9) is 0.37 to 0.55, and
The radius of curvature R13 of the object-side surface of the seventh lens and the radius of curvature R14 of the image-side surface of the seventh lens satisfy:
-1<R14/R13≤-0.46。
2. the optical imaging lens of claim 1, wherein an effective focal length f of the optical imaging lens and an entrance pupil diameter of the optical imaging lens satisfy:
1.84<f/EPD<1.87。
3. The optical imaging lens according to claim 2, wherein a distance TTL from an object side surface of the first lens of the optical imaging lens to an imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface satisfy:
TTL/ImgH<1.4。
4. the optical imaging lens of claim 1, wherein a combined focal length f123 of the first lens, the second lens, and the third lens and a combined focal length f567 of the fifth lens, the sixth lens, and the seventh lens satisfy:
-0.6<f123/f567<-0.2。
5. the optical imaging lens of claim 1, wherein an effective focal length f2 of the second lens, a radius of curvature R3 of an object side surface of the second lens, and a radius of curvature R4 of an image side surface of the second lens satisfy:
-0.5<(R3-R4)/f2<-0.3。
6. the optical imaging lens of claim 1, wherein an edge thickness ET1 of the first lens and an edge thickness ET5 of the fifth lens satisfy:
0.6<ET1/ET5≤0.81。
7. the optical imaging lens of claim 1, wherein an edge thickness ET6 of the sixth lens and a center thickness CT6 of the sixth lens satisfy:
0.6<ET6/CT6≤0.74。
8. The optical imaging lens according to claim 1, wherein an on-axis distance SAG51 between an intersection of the object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens and an on-axis distance SAG52 between an intersection of the image side surface of the fifth lens and the optical axis to an effective radius vertex of the image side surface of the fifth lens satisfy:
0.78≤SAG52/SAG51<1.0。
9. the optical imaging lens according to claim 1, wherein an on-axis distance SAG71 between an intersection of the object side surface of the seventh lens and the optical axis to an effective radius vertex of the object side surface of the seventh lens and an on-axis distance SAG72 between an intersection of the image side surface of the seventh lens and the optical axis to an effective radius vertex of the image side surface of the seventh lens satisfy:
0.86≤SAG71/SAG72≤0.90。
10. The optical imaging lens of claim 1, wherein a radius of curvature R1 of an object side surface of the first lens, a radius of curvature R2 of an image side surface of the first lens, a radius of curvature R11 of an object side surface of the sixth lens, and a radius of curvature R12 of an image side surface of the sixth lens satisfy:
0.37≤(R11+R12)/(R2-R1)≤0.45。
11. The optical imaging lens of claim 1, wherein a radius of curvature R5 of an object side surface of the third lens and a radius of curvature R6 of an image side surface of the third lens satisfy:
0.80≤R5/R6≤1.92。
12. The optical imaging lens according to claim 1, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a center thickness CT4 of the fourth lens on the optical axis satisfy:
0.89≤CT1/(CT2+CT3+CT4)<1.0。
13. The optical imaging lens according to any one of claims 1 to 12, wherein a center thickness CT5 of the fifth lens on an optical axis, a center thickness CT7 of the seventh lens on an optical axis, an air interval T45 of the fourth lens and the fifth lens on an optical axis, an air interval T56 of the fifth lens and the sixth lens on an optical axis, and an air interval T67 of the sixth lens and the seventh lens on an optical axis satisfy:
0.6<(T45+CT5+T56)/(T67+CT7)<0.8。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010343813.6A CN111399182B (en) | 2020-04-27 | 2020-04-27 | Optical imaging lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010343813.6A CN111399182B (en) | 2020-04-27 | 2020-04-27 | Optical imaging lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111399182A CN111399182A (en) | 2020-07-10 |
| CN111399182B true CN111399182B (en) | 2024-12-20 |
Family
ID=71431746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010343813.6A Active CN111399182B (en) | 2020-04-27 | 2020-04-27 | Optical imaging lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111399182B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111983780A (en) * | 2020-09-01 | 2020-11-24 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| CN112782833A (en) * | 2021-01-22 | 2021-05-11 | 江西晶超光学有限公司 | Imaging lens, image capturing module and electronic device |
| CN113126262B (en) * | 2021-05-13 | 2022-04-19 | 江西联益光学有限公司 | Optical imaging lens and imaging apparatus |
| CN114706194B (en) * | 2022-04-15 | 2024-08-30 | 浙江舜宇光学有限公司 | Image pickup lens group |
| CN115047588B (en) * | 2022-04-28 | 2024-09-03 | 浙江舜宇光学有限公司 | Optical imaging lens and lens module |
| CN115951477A (en) * | 2023-02-20 | 2023-04-11 | 浙江舜宇光学有限公司 | Imaging lens |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490839A (en) * | 2014-08-01 | 2017-12-19 | 大立光电股份有限公司 | Image capturing optical lens assembly, image capturing device and electronic device |
| CN212009121U (en) * | 2020-04-27 | 2020-11-24 | 浙江舜宇光学有限公司 | Optical imaging lens |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5963360B2 (en) * | 2012-11-21 | 2016-08-03 | カンタツ株式会社 | Imaging lens |
| CN108710193B (en) * | 2015-02-17 | 2020-09-01 | 大立光电股份有限公司 | Camera system and imaging device |
| CN110082890B (en) * | 2019-05-16 | 2024-04-23 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN110262005B (en) * | 2019-06-29 | 2021-07-30 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
| CN110515186B (en) * | 2019-09-25 | 2024-05-03 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN110908073A (en) * | 2019-11-14 | 2020-03-24 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
-
2020
- 2020-04-27 CN CN202010343813.6A patent/CN111399182B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490839A (en) * | 2014-08-01 | 2017-12-19 | 大立光电股份有限公司 | Image capturing optical lens assembly, image capturing device and electronic device |
| CN212009121U (en) * | 2020-04-27 | 2020-11-24 | 浙江舜宇光学有限公司 | Optical imaging lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111399182A (en) | 2020-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109031629B (en) | Camera optical system | |
| CN110632742B (en) | Optical imaging lens | |
| CN110426822B (en) | Optical imaging lens | |
| CN109031628B (en) | Optical imaging lens group | |
| CN107643586B (en) | Image pickup lens group | |
| CN109782418B (en) | Optical imaging lens | |
| CN109752826B (en) | Optical imaging lens | |
| CN110426819B (en) | Optical imaging lens | |
| CN110749977B (en) | Optical imaging lens | |
| CN111399182B (en) | Optical imaging lens | |
| CN210924084U (en) | Optical imaging lens | |
| CN114137693A (en) | Optical imaging lens | |
| CN110515186B (en) | Optical imaging lens | |
| CN109828346B (en) | Optical imaging lens | |
| CN108490587B (en) | Imaging lens | |
| CN111413784A (en) | Optical imaging lens | |
| CN212009121U (en) | Optical imaging lens | |
| CN108919468B (en) | Optical imaging lens | |
| CN108279484B (en) | Optical imaging system | |
| CN110579864B (en) | Optical imaging lens | |
| CN112612119A (en) | Optical imaging lens | |
| CN111580249B (en) | Optical imaging lens | |
| CN211043779U (en) | Optical imaging lens | |
| CN113093370B (en) | Optical imaging lens | |
| CN111965798B (en) | Optical imaging lens |
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 | ||
| GR01 | Patent grant |