CN111399182A - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
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- CN111399182A CN111399182A CN202010343813.6A CN202010343813A CN111399182A CN 111399182 A CN111399182 A CN 111399182A CN 202010343813 A CN202010343813 A CN 202010343813A CN 111399182 A CN111399182 A CN 111399182A
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- 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
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- 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
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Abstract
The application discloses an optical imaging lens which sequentially comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with focal power, a fourth lens with focal power, a fifth lens with focal power, a sixth lens with positive focal power, a concave image side surface and a seventh lens with focal power from an object side surface to an imaging surface of the optical imaging lens, wherein the distance TT L between the object side surface of the first lens of the optical imaging lens and the imaging surface of the optical imaging lens on the optical axis meets TT L/ImgH <1.4, and the effective focal length f of the optical imaging lens meets f tan (Semi-FOV) >5.5mm with the half of the diagonal length of an effective pixel area on the imaging surface.
Description
Technical Field
The present invention 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 forward higher and higher requirements on the imaging quality of an imaging lens carried on a mobile phone.
On one hand, with the continuous update of a common photosensitive Device, such as a Charge Coupled Device (CCD) or a Complementary Metal-oxide semiconductor (cmos) Device, the pixel size of the photosensitive Device is gradually reduced, and higher requirements are placed on the high imaging quality and miniaturization of the imaging lens used in cooperation with the photosensitive Device. In addition, the development trend of electronic products is to have a compact, light, thin and small profile, so that a small camera lens with good imaging quality is still the main development direction of mobile phone lenses.
In addition, the mobile phone imaging lens has a trend of developing to a large image surface. The large image plane means higher resolution, and the imaging lens with the large image plane characteristic can generally realize higher resolution and better imaging quality. However, how to realize a large image plane of the imaging lens while ensuring miniaturization also poses a more difficult challenge to the optical system design.
Based on the current development trend, the conventional five-piece or six-piece lens structure may not be sufficient to effectively meet various requirements, and a seven-piece optical imaging lens system will gradually become the mainstream.
Disclosure of Invention
An aspect of the present application provides an optical imaging lens, which may include, in order from an object side to an image side along an optical axis: a first lens having a positive refractive power, an object-side surface of which is convex; a second lens having a negative optical power; a third lens having optical power; a fourth lens having an optical power; a fifth lens having a refractive power, an object side surface of which is concave; the image side surface of the sixth lens is a concave surface; and a seventh lens having optical power.
In one embodiment, a distance TT L from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and a half of the diagonal length ImgH of the effective pixel area on the imaging surface can satisfy TT L/ImgH < 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) >5.5 mm.
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, 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 may satisfy: -1.0< f123/f567< 0.
In one embodiment, the effective focal length f2 of the second lens, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R4 of the image-side surface of the second lens satisfy: -1.0< (R3-R4)/f2< 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 an 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 an 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 may satisfy: 0.5< SAG52/SAG51< 1.0.
In one embodiment, an on-axis distance SAG71 between an intersection point of an 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 point of an 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 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 central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, and the central thickness CT4 of the fourth lens on the optical axis may satisfy: 0.7< CT1/(CT2+ CT3+ CT4) < 1.2.
In one embodiment, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, an air interval T45 of the fourth lens and the fifth lens on the optical axis, an air interval T56 of the fifth lens and the sixth lens on the optical axis, and an 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 all levels of aberration of the system by reasonably controlling the relationship between the image height and the total optical 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-thinness, and is beneficial to the miniaturization of the system; in addition, the optical system has the characteristic of high pixel, 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 when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic structural view 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 astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 is a schematic structural view showing 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 chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 is a schematic structural view showing 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 chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6.
Detailed Description
For a better understanding of the present application, various aspects of the present 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 present application and does not limit the scope of the present 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 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 closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" 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. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present 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 the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The features, principles, and other aspects of the present application are described in detail below.
An optical imaging lens according to an exemplary embodiment of the present application may include seven lenses having optical powers, 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 to seventh lenses, each of adjacent two lenses may have an air space therebetween.
In an exemplary embodiment, the first lens may have a positive optical power, and the object-side surface thereof may be convex; the second lens may have a negative optical power; the third lens has positive focal power or negative focal power; the fourth lens has positive focal power or negative focal power; the fifth lens has positive focal power or negative focal power, and the object side surface of the fifth lens can be a concave surface; the sixth lens can have positive focal power, and the image side surface of the sixth lens can be concave; and the seventh lens has positive power or negative power. Through the reasonable distribution of 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 surface of the first lens may be concave.
In an exemplary embodiment, the object-side surface of the second lens element 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 TT L from the object side surface of the first lens of the optical imaging lens to the imaging surface on the optical axis and the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens can satisfy TT L/ImgH <1.4, for example, TT L/ImgH is less than or equal to 1.35.
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) >5.5 mm. For example, 5.5mm < f tan (Semi-FOV) <6.0 mm. The mutual relation 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, the optical system has the characteristic of high pixel, and the system resolution is effectively improved.
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 relationship 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 the sufficient light transmission amount 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. Through 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 of the optical imaging lens and the relationship among the effective focal lengths, the focal power of the lenses can be reasonably distributed, and the aberration of the system is effectively controlled, so that the system is ensured to have better image quality, and the image resolving power of the system is improved.
In an exemplary embodiment, a combined focal length f123 of the first, second, and third lenses and a 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 relationship 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 powers of the front lens group and the rear lens group can be reasonably distributed, so that positive spherical aberration and negative spherical aberration generated by the front component and the rear component are mutually offset, 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, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R4 of the image-side surface of the second lens may satisfy: -1.0< (R3-R4)/f2< 0. For example, -0.5< (R3-R4)/f2< -0.3. By controlling the relationship 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, the shape of the second lens can be effectively controlled, the processability of the second lens is ensured, and therefore, the forming and the assembling are facilitated, and the imaging capacity of a 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. The processability of the first lens and the processability of the fifth lens can be ensured by controlling the relation between the edge thickness of the first lens and the edge thickness of the fifth lens, so that the forming and the assembly are facilitated, and the imaging capability of a system is improved.
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 processability of the lens is improved, the trend of light rays of an edge field of view can be effectively controlled, and the system can be better matched with a 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. The shape of the fifth lens can be effectively controlled by controlling the relationship between the axial distance between the intersection point of the object side surface of the fifth lens and the optical axis and the axial distance between the intersection point of the image side surface of the fifth lens and the optical axis and the effective radius peak of the image side surface of the fifth lens, so that the processability of the fifth lens is improved, the forming and the assembling of the lens are facilitated, and the resolving power of an optical system is improved.
In an exemplary embodiment, an on-axis distance SAG71 between an intersection of the seventh lens object-side surface and the optical axis to an effective radius vertex of the seventh lens object-side surface and an on-axis distance SAG72 between an intersection of the seventh lens image-side surface and the optical axis to an effective radius vertex of the seventh lens image-side surface 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 object-side surface of the seventh lens and the optical axis and the on-axis distance between the intersection point of the image-side surface of the seventh lens and the optical axis and the effective radius vertex of the image-side surface of the seventh lens, the shape of the seventh lens can be effectively controlled, the ghost image is reduced, and the forming, processing and 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 relation 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 then the deflection angles of the system light beams at the first lens and the sixth lens are controlled, so that the good processability 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 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. 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 a 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 amount of the fourth lens and the fifth lens to spherical aberration can be well controlled, so that the system has smaller spherical aberration and better imaging capability.
In an exemplary 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. 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 amount of the seventh lens to aberrations such as spherical aberration, coma aberration and the like can be reduced well, the aberrations of a balanced system are easier, and the imaging quality of the system is improved.
In an exemplary embodiment, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, and the central thickness CT4 of the fourth lens on the optical axis may satisfy: 0.7< CT1/(CT2+ CT3+ CT4) < 1.2. For example, 0.8< CT1/(CT2+ CT3+ CT4) < 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, and the contribution of each lens to field curvature is effectively balanced, so that each field has better image quality.
In an exemplary embodiment, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT7 of the seventh lens on the optical axis, an air interval T45 of the fourth lens and the fifth lens on the optical axis, an air interval T56 of the fifth lens and the sixth lens on the optical axis, and an 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. The central thickness of the fifth lens on the optical axis, the central 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 relationship between the air interval of the sixth lens and the seventh lens on the optical axis are controlled, so that the central thicknesses of the lenses and the intervals between the lenses can be reasonably distributed, the system is compact, the field curvature can be effectively controlled, the field curvature of the system is ensured to be in a small range, and the imaging quality of the system is ensured.
In an exemplary embodiment, the optical imaging lens may further include a diaphragm. The diaphragm may be disposed at an appropriate position as required. For example, a diaphragm may be disposed 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 on the imaging surface.
The application provides an optical imaging lens with characteristics of large image plane, large aperture, ultra-thin and the like. The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, seven lenses as described above. By reasonably distributing the focal power and the surface shape of each lens, the central thickness of each lens, the on-axis distance between each lens and the like, incident light can be effectively converged, the optical total length of the imaging lens is reduced, the machinability of the imaging lens is improved, and the optical imaging lens is more beneficial to production and processing.
In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspheric mirror surface, 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 aspheric 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. 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 aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, sixth, and seventh lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.
The present application also provides an imaging device whose electron sensing 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 optical imaging lens described above.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although seven lenses are exemplified 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 an optical imaging lens applicable to the above-described embodiments are further described below with reference to the 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 view showing a structure of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the optical imaging lens, in order from an object side to an image side along an optical axis, 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The 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 of the optical imaging lens is 6.69mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.78mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 5.75mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 40.2 °.
Table 1 shows a basic parameter table of the optical imaging lens of embodiment 1, in which the units of the radius of curvature, the thickness, and the 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 through the seventh lens E7 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface 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 shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S14 used in example 14、A6、A8、A10、A12、A14、A16Table 3 shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S14 used in example 118、A20、A22、A24、A26、A28And A30。
| Flour mark | 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
| Flour mark | 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
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a 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 according to 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 structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens, in order from an object side to an image side along an optical axis, 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The 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 of the optical imaging lens is 6.69mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.76mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 5.75mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 40.2 °.
Table 4 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
TABLE 4
In embodiment 2, both the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 are aspheric. Table 5 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S14 used in example 24、A6、A8、A10、A12、A14、A16Table 6 shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S14 used in example 218、A20、A22、A24、A26、A28And A30。
TABLE 5
| Flour mark | 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 represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. 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 chromatic aberration of magnification 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 according to 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 structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens, in order from an object side to an image side along an optical axis, 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The 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 of the optical imaging lens is 6.69mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.76mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 5.75mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 40.2 °.
Table 7 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
TABLE 7
In embodiment 3, both the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 are aspheric. Table 8 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S14 used in example 34、A6、A8、A10、A12、A14、A16Table 9 shows the high-order coefficient A for each of the aspherical mirror surfaces S1-S14 in example 318、A20、A22、A24、A26、A28And A30。
| Flour mark | 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
| Flour mark | 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 represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a 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 according to 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 structural diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens, in order from an object side to an image side along an optical axis, 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The 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 of the optical imaging lens is 6.69mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.74mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 5.75mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 40.2 °.
Table 10 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
Watch 10
In embodiment 4, both the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 are aspheric. Table 11 below shows the coefficients A of the high-order terms which can be used for the aspherical mirror surfaces S1 to S14 in example 44、A6、A8、A10、A12、A14、A16Table 12 shows the high-order coefficient A which can be used for each of the aspherical mirror surfaces S1-S14 in example 418、A20、A22、A24、A26、A28And A30。
| Flour mark | 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 represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. 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 chromatic aberration of magnification 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 according to 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 structural diagram of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens, in order from an object side to an image side along an optical axis, 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The 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 of the optical imaging lens is 6.69mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.75mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 5.75mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 40.2 °.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
Watch 13
In embodiment 5, both the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 are aspheric. Table 14 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S14 used in example 54、A6、A8、A10、A12、A14、A16Table 15 shows the high-order coefficient A which can be used for each of the aspherical mirror surfaces S1-S14 in example 518、A20、A22、A24、A26、A28And A30。
| Flour mark | 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
| Flour mark | 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 |
Watch 15
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to 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 view of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens, in order from an object side to an image side along an optical axis, 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The 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 of the optical imaging lens is 6.69mm, the distance TT L on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S17 is 7.75mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 5.75mm, and the maximum half field angle Semi-FOV of the optical imaging lens is 40.1 °.
Table 16 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm).
TABLE 16
In embodiment 6, both the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 are aspheric. Table 17 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1-S14 used in example 64、A6、A8、A10、A12、A14、A16Table 18 shows the high-order coefficient A which can be used for each of the aspherical mirror surfaces S1-S14 in example 618、A20、A22、A24、A26、A28And A30。
| Flour mark | 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
| Flour mark | 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 |
Watch 18
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
In summary, examples 1 to 6 each satisfy the relationship shown in table 19.
| Conditions/examples | 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 |
Watch 19
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. An optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
a first lens having a positive refractive power, an object-side surface of which is convex;
a second lens having a negative optical power;
a third lens having optical power;
a fourth lens having an optical power;
a fifth lens having a refractive power, an object side surface of which is concave;
the image side surface of the sixth lens is a concave surface; and
a seventh lens having optical power;
wherein a distance TT L 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:
TT L/ImgH <1.4, and
the effective focal length f of the optical imaging lens and half of the maximum field angle Semi-FOV of the optical imaging lens meet the following conditions:
f*tan(Semi-FOV)>5.5mm。
2. the optical imaging lens of claim 1, wherein the effective focal length f of the optical imaging lens and the diameter of the entrance pupil of the optical imaging lens satisfy:
f/EPD<1.9。
3. the optical imaging lens of claim 1, wherein 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 satisfy:
0.8<f1/f6+f7/f5<1.8。
4. the optical imaging lens according to 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:
-1.0<f123/f567<0。
5. the optical imaging lens of claim 1, wherein the effective focal length f2 of the second lens, the radius of curvature R3 of the object side surface of the second lens, and the radius of curvature R4 of the image side surface of the second lens satisfy:
-1.0<(R3-R4)/f2<0。
6. the optical imaging lens of claim 1, wherein the edge thickness ET1 of the first lens and the edge thickness ET5 of the fifth lens satisfy:
0.5<ET1/ET5<1.0。
7. the optical imaging lens of claim 1, wherein the edge thickness ET6 of the sixth lens and the center thickness CT6 of the sixth lens satisfy:
0.5<ET6/CT6<1.0。
8. the optical imaging lens of claim 1, wherein an on-axis distance SAG51 between an intersection point of an 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 point of an image-side surface of the fifth lens and the optical axis to an effective radius vertex of an image-side surface of the fifth lens satisfy:
0.5<SAG52/SAG51<1.0。
9. the optical imaging lens of claim 1, wherein an on-axis distance SAG71 between an intersection point of an 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 point of an image-side surface of the seventh lens and the optical axis to an effective radius vertex of an image-side surface of the seventh lens satisfy:
0.5<SAG71/SAG72<1.0。
10. an optical imaging lens, in order from an object side to an image side along an optical axis, comprising:
a first lens having a positive refractive power, an object-side surface of which is convex;
a second lens having a negative optical power;
a third lens having optical power;
a fourth lens having an optical power;
a fifth lens having a refractive power, an object side surface of which is concave;
the image side surface of the sixth lens is a concave surface; and
a seventh lens having optical power;
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:
0.8< f1/f6+ f7/f5< 1.8; and
the effective focal length f of the optical imaging lens and half of the maximum field angle Semi-FOV of the optical imaging lens meet the following conditions:
f*tan(Semi-FOV)>5.5mm。
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|---|---|---|---|---|
| CN113126262A (en) * | 2021-05-13 | 2021-07-16 | 江西联益光学有限公司 | Optical imaging lens and imaging apparatus |
| TWI784313B (en) * | 2020-09-01 | 2022-11-21 | 大陸商玉晶光電（廈門）有限公司 | Optical imaging lens |
-
2020
- 2020-04-27 CN CN202010343813.6A patent/CN111399182A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI784313B (en) * | 2020-09-01 | 2022-11-21 | 大陸商玉晶光電（廈門）有限公司 | Optical imaging lens |
| US11803035B2 (en) | 2020-09-01 | 2023-10-31 | Genius Electronic Optical (Xiamen) Co., Ltd. | Optical imaging lens including seven lenses of −++−++− or −++−+−− refractive powers |
| CN113126262A (en) * | 2021-05-13 | 2021-07-16 | 江西联益光学有限公司 | Optical imaging lens and imaging apparatus |
| CN113126262B (en) * | 2021-05-13 | 2022-04-19 | 江西联益光学有限公司 | Optical imaging lens and imaging apparatus |
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