CN217007835U - Camera lens - Google Patents
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- CN217007835U CN217007835U CN202220837599.4U CN202220837599U CN217007835U CN 217007835 U CN217007835 U CN 217007835U CN 202220837599 U CN202220837599 U CN 202220837599U CN 217007835 U CN217007835 U CN 217007835U
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Abstract
The application discloses camera lens includes following order from object side to image side along the optical axis: the lens comprises a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the third lens element has negative refractive power; the fifth lens element with negative refractive power; the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concave surface; the abbe number V1 of the first lens satisfies: v1 > 90.
Description
Technical Field
The present application relates to the field of optical elements, and more particularly, to an imaging lens.
Background
In recent years, mobile electronic devices such as mobile phones have been rapidly developed, and there has been an increasing demand for imaging lenses mounted thereon, and as market demands have been more and more updated, manufacturers have also made new demands for designing imaging lenses mounted on the devices. For example, the current mobile phone lens is developing towards the characteristics of ultra-thin and large image plane, and the like, and the optical design work is not a small challenge.
In order to highlight the competitive advantage of the mobile phone lens in the industry, mobile phone suppliers put forward more extreme requirements, so that the design difficulty of the lens is continuously improved, the conventional design is not enough to meet various requirements, and in research and development, special conditions also need to utilize the characteristics of materials to achieve better effects, such as high-refractive-index materials to improve the performance of the lens, high-abbe materials to reduce the chromatic aberration of a system, and the like.
SUMMERY OF THE UTILITY MODEL
The present application provides an image pickup lens, which sequentially comprises, from an object side to an image side along an optical axis: the lens comprises a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the third lens element has negative refractive power; the fifth lens element with negative refractive power; the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concave surface; and the abbe number V1 of the first lens may satisfy: v1 > 90.
In one embodiment, a distance TTL along the optical axis from the object side surface of the first lens element to the imaging surface of the imaging lens and a half ImgH of a diagonal length of the effective pixel area on the imaging surface may satisfy: TTL/ImgH < 1.3.
In one embodiment, ImgH, which is half the diagonal length of the effective pixel area on the imaging plane, may satisfy: ImgH > 6.0.
In one embodiment, the maximum field angle FOV of the imaging lens may satisfy: 80 < FOV < 90.
In one embodiment, the effective focal length f5 of the fifth lens and the radius of curvature of the image side surface R10 of the fifth lens may satisfy: -3.0 < f5/R10 < -1.5.
In one embodiment, the effective focal length f7 of the seventh lens and the radius of curvature R14 of the image side surface of the seventh lens may satisfy: -3.0 < f7/R14 < -1.0.
In one embodiment, 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 may satisfy: 1.5 < (R12+ R11)/(R12-R11) < 2.5.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens may satisfy: 1.5 < (R2+ R1)/(R2-R1) < 2.5.
In one embodiment, a center thickness CT4 of the fourth lens on the optical axis and a center thickness CT3 of the third lens on the optical axis may satisfy: 2.0 < CT4/CT3 < 3.0.
In one embodiment, the edge thickness ET6 of the sixth lens and the central thickness CT6 of the sixth lens on the optical axis may satisfy: ET6/CT6 is more than or equal to 1.0 and less than or equal to 1.5.
In one embodiment, an on-axis distance SAG61 from an intersection point of an object-side surface of the sixth lens and the optical axis to an effective radius vertex of the object-side surface of the sixth lens to an on-axis distance SAG62 from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens may satisfy: 1.0 is more than or equal to SAG61/SAG62 is less than 1.6.
In one embodiment, an on-axis distance SAG71 from 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 from 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 < 1.5.
In one embodiment, a separation distance T67 between the sixth lens and the seventh lens on the optical axis and a separation distance T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 5.5 < T67/T56 < 11.0.
In one embodiment, the abbe number V5 of the fifth lens and the abbe number V3 of the third lens may satisfy: 0 < V5-V3 < 20.
In one embodiment, the effective focal length f of the imaging lens and the entrance pupil diameter EPD of the imaging lens may satisfy: f/EPD is less than or equal to 1.6.
In one embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens may satisfy: -4.0 < f3/f4 < -1.5.
In one embodiment, a separation distance T23 between the second lens and the third lens on the optical axis and a separation distance T34 between the third lens and the fourth lens on the optical axis may satisfy: 4.5 < T23/T34 < 14.0.
The seven-piece type lens framework is adopted, the refractive power of each lens is reasonably distributed, the surface type, the thickness, the Abbe number and the like of each lens are optimally selected, a material with low refractive index and high Abbe number is applied to the design, and the material is utilized to realize better performance so as to better meet the requirements of the public and manufacturers.
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 configuration diagram of an 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 imaging lens of embodiment 1;
fig. 3 shows a schematic configuration diagram of an 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 imaging lens of embodiment 2;
fig. 5 shows a schematic configuration diagram of an 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 imaging lens of embodiment 3;
fig. 7 is a schematic configuration diagram showing an 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 imaging lens of embodiment 4;
fig. 9 is a schematic view showing a configuration of an 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 imaging lens of embodiment 5;
fig. 11 is a schematic configuration diagram showing an 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 imaging lens of embodiment 6;
fig. 13 is a schematic configuration diagram showing an imaging lens according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of an imaging lens of embodiment 7;
fig. 15 shows a schematic configuration diagram of an imaging lens according to embodiment 8 of the present application; and
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the imaging lens of embodiment 8.
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. In this document, the surface of each lens closest to the subject is referred to as the object-side surface of the lens, and the surface of each lens closest to the image plane is referred to as 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 image pickup lens according to an exemplary embodiment of the present application may include, for example, seven lenses, 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 an exemplary embodiment, the first lens element may have positive refractive power or negative refractive power; the second lens element with positive or negative refractive power; the third lens element with negative refractive power; the fourth lens element with positive or negative refractive power; the fifth lens element with negative refractive power; the sixth lens element with positive or negative refractive power; the seventh lens element with positive refractive power or negative refractive power.
In an exemplary embodiment, the object-side surface of the sixth lens element may be convex, and the image-side surface may be concave.
In an exemplary embodiment, each lens may have an air space therebetween.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression V1 > 90, where V1 is the abbe number of the first lens. The aim of controlling the integral chromatic aberration of the system is achieved by controlling the Abbe number of the first lens to be within the range.
In an exemplary embodiment, the imaging lens of the present application may satisfy a conditional expression TTL/ImgH <1.3, where TTL is a distance along the optical axis from the object side surface of the first lens to the imaging surface of the imaging lens, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface of the imaging lens. By controlling the ratio of the distance from the object side surface of the first lens to the imaging surface of the camera lens along the optical axis to the half of the diagonal length of the effective pixel area on the imaging surface of the camera lens within the range, the system can compress the total length of the system as far as possible while ensuring a large image surface, thereby ensuring that the camera lens realizes an ultrathin effect. Illustratively, TTL can satisfy 8.0mm < TTL < 8.3mm, and ImgH can satisfy 6.6mm < ImgH < 6.8 mm.
In an exemplary embodiment, an imaging lens of the present application may satisfy the conditional expression ImgH > 6.0, where ImgH is half the diagonal length of an effective pixel area on an imaging surface of the imaging lens. By controlling half of the diagonal length of the effective pixel area on the imaging surface of the camera lens to be in the range, the image height of the system can be controlled to be more than 6, and the attribute of the large image surface of the system is maintained. More specifically, ImgH may satisfy: ImgH > 6.3. Illustratively, ImgH may satisfy 6.6mm < ImgH < 6.8 mm.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 80 ° < FOV < 90 °, where FOV is the maximum angle of view of the imaging lens. The maximum field angle of the camera lens is controlled in the range, so that the maximum field angle of the optical system is larger than 80 degrees, and the wide-angle characteristic of the system is realized. More specifically, the FOV may satisfy: 81 < FOV < 88.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression-3.0 < f5/R10 < -1.5, where f5 is an effective focal length of the fifth lens, and R10 is a radius of curvature of an image-side surface of the fifth lens. By controlling the ratio of the effective focal length of the fifth lens to the curvature radius of the image side surface of the fifth lens within the range, the astigmatism of the system can be effectively controlled, and the imaging quality of an off-axis field of view can be improved. More specifically, f5 and R10 may satisfy: -2.9 < f5/R10 < -1.6.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression-3.0 < f7/R14 < -1.0, where f7 is an effective focal length of the seventh lens, and R14 is a radius of curvature of an image-side surface of the seventh lens. The third-order coma aberration of the system can be controlled within a reasonable range by controlling the ratio of the effective focal length of the seventh lens to the curvature radius of the image side surface of the seventh lens, and then the coma aberration generated by the front-end optical lens can be balanced, so that the system has good imaging quality. More specifically, f7 and R14 may satisfy: -2.8 < f7/R14 < -1.3.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 1.5 < (R12+ R11)/(R12-R11) < 2.5, where R11 is a radius of curvature of an object-side surface of the sixth lens and R12 is a radius of curvature of an image-side surface of the sixth lens. By controlling the ratio of the sum of the curvature radius of the image side surface of the sixth lens and the curvature radius of the object side surface of the sixth lens to the difference between the curvature radius of the image side surface of the sixth lens and the curvature radius of the object side surface of the sixth lens to be in the range, the coma aberration of the on-axis view field and the off-axis view field is small, and the imaging system has good imaging quality. More specifically, R12 and R11 may satisfy: 1.6 < (R12+ R11)/(R12-R11) < 2.3.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 1.5 < (R2+ R1)/(R2-R1) < 2.5, where R1 is a radius of curvature of an object-side surface of the first lens and R2 is a radius of curvature of an image-side surface of the first lens. By controlling the ratio of the sum of the radius of curvature of the image-side surface of the first lens element and the radius of curvature of the object-side surface of the first lens element to the difference between the radius of curvature of the image-side surface of the first lens element and the radius of curvature of the object-side surface of the first lens element within this range, the aberration generated by the imaging lens on the first lens element can be effectively controlled. More specifically, R2 and R1 may satisfy: 1.5 < (R2+ R1)/(R2-R1) < 2.3.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 2.0 < CT4/CT3 < 3.0, where CT4 is a central thickness of the fourth lens on the optical axis, and CT3 is a central thickness of the third lens on the optical axis. By controlling the ratio of the central thickness of the fourth lens on the optical axis to the central thickness of the third lens on the optical axis within the range, the thickness of each lens can be reasonably configured, the thickness sensitivity of the lens is effectively reduced, and the curvature of field of the system can be corrected. More specifically, CT4 and CT3 may satisfy: 2.2 < CT4/CT3 < 2.8.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 1.0 ≦ ET6/CT6 < 1.5, where ET6 is an edge thickness of the sixth lens, and CT6 is a center thickness of the sixth lens on the optical axis. The ratio of the edge thickness of the sixth lens to the center thickness of the sixth lens on the optical axis is controlled within the range, so that the thickness ratio of the lens can be effectively controlled, and the processability of the lens can be improved.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 1.0 ≦ SAG61/SAG62 < 1.6, where SAG61 is an on-axis distance from an intersection of an object-side surface of the sixth lens and the optical axis to an effective radius vertex of the object-side surface of the sixth lens, and SAG62 is an on-axis distance from an intersection of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of the image-side surface of the sixth lens. The ratio of the on-axis distance from the intersection point of the object-side surface of the sixth lens and the optical axis to the effective radius peak of the object-side surface of the sixth lens to the on-axis distance from the intersection point of the image-side surface of the sixth lens and the optical axis to the effective radius peak of the image-side surface of the sixth lens is controlled within the range, so that the sensitivity of the sixth lens is favorably reduced, and the lens is convenient to machine and form.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0.5 < SAG71/SAG72 < 1.5, where SAG71 is an on-axis distance from 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 SAG72 is an on-axis distance from 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. By controlling the ratio of the on-axis distance from the intersection point of the object-side surface and the optical axis of the seventh lens to the effective radius vertex of the object-side surface of the seventh lens to the on-axis distance from the intersection point of the image-side surface and the optical axis of the seventh lens to the effective radius vertex of the image-side surface of the seventh lens to be within the range, the surface shape of the seventh lens can be effectively controlled, the ghost image of the seventh lens can be effectively optimized, and the risk of the occurrence of the inner reverse ghost image of the seventh lens is reduced. More specifically, SAG71 and SAG72 may satisfy 0.7 < SAG71/SAG72 < 1.4.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 5.5 < T67/T56 < 11.0, where T67 is a separation distance of the sixth lens and the seventh lens on the optical axis, and T56 is a separation distance of the fifth lens and the sixth lens on the optical axis. The distance between the lenses can be effectively controlled by controlling the ratio of the spacing distance of the sixth lens and the seventh lens on the optical axis to the spacing distance of the fifth lens and the sixth lens on the optical axis within the range, so that the compactness of the lens structure is favorably realized, the off-axis aberration is favorably corrected, and the integral image quality of the system is improved. More specifically, T67 and T56 may satisfy 5.7 < T67/T56 < 10.9.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 0 < V5-V3 < 20, where V5 is the abbe number of the fifth lens and V3 is the abbe number of the third lens. By controlling the difference value between the Abbe number of the fifth lens and the Abbe number of the third lens within the range, the aberration of the system can be balanced, and the performance of the system can be improved. More specifically, V5 and V3 may satisfy 10 < V5-V3 < 19.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression f/EPD ≦ 1.6, where f is the effective focal length of the imaging lens, and EPD is the entrance pupil diameter of the imaging lens. The Fno of the system is controlled to be less than or equal to 1.6 by controlling the ratio of the effective focal length of the camera lens to the entrance pupil diameter of the camera lens in the range, so that the system realizes the characteristic of large aperture.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression-4.0 < f3/f4 < -1.5, where f3 is an effective focal length of the third lens and f4 is an effective focal length of the fourth lens. By controlling the ratio of the effective focal length of the third lens to the effective focal length of the fourth lens to be in the range, the ratio of the effective focal lengths of the third lens and the fourth lens can be restricted, so that the field curvature contributions of the two lenses are reasonably controlled, and the balance of the two lenses is in a reasonable state. More specifically, f3 and f4 may satisfy-3.8 < f3/f4 < -1.5. Illustratively, f3 may satisfy-69.7 mm < f3 < -28.3mm, and f4 may satisfy 16.5mm < f4 < 26.4 mm.
In an exemplary embodiment, the imaging lens of the present application may satisfy the conditional expression 4.5 < T23/T34 < 14.0, where T23 is a separation distance of the second lens and the third lens on the optical axis, and T34 is a separation distance of the third lens and the fourth lens on the optical axis. The distance between the lenses can be effectively controlled by controlling the ratio of the spacing distance of the second lens and the third lens on the optical axis to the spacing distance of the third lens and the fourth lens on the optical axis within the range, so that the compactness of the lens structure is favorably realized, and the integral image quality of the system is favorably improved. More specifically, T23 and T34 may satisfy 4.7 < T23/T34 < 13.7.
In an exemplary embodiment, an imaging lens of the present application may include at least one diaphragm. The diaphragm can restrict the light path and control the intensity of light. The stop may be provided at an appropriate position of the imaging lens, for example, a stop may be provided between the object side and the first lens, and a stop may be further provided between the second lens and the third lens.
In an exemplary embodiment, the above-described imaging lens may optionally further include an optical filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on an imaging surface.
In an exemplary embodiment, the effective focal length f of the camera lens may be, for example, in the range of 6.3mm to 6.7mm, the effective focal length f1 of the first lens may be, for example, in the range of 8.1mm to 9.1mm, the effective focal length f2 of the second lens may be, for example, in the range of-76.4 mm to 152.3mm, the effective focal length f3 of the third lens may be, for example, in the range of-69.7 mm to-28.3 mm, the effective focal length f4 of the fourth lens may be, for example, in the range of 16.5mm to 26.4mm, the effective focal length f5 of the fifth lens may be, for example, in the range of-14.5 mm to-10.1 mm, the effective focal length f6 of the sixth lens may be, for example, in the range of 5.6mm to 6.2mm, and the effective focal length f7 of the seventh lens may be, for example, in the range of-5.8 mm to-4.8 mm.
The 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 refractive power, the surface type and the like of each lens and reasonably selecting the abbe number, the refractive index and the like of each lens, for example, a material with low refractive index and high abbe number is applied to design, and the characteristics of the material are utilized to realize better performance of the camera lens, so that the market demand is better met.
In the embodiment of the present application, the mirror surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens may have at least one aspheric mirror surface, that is, at least one aspheric mirror surface may be included from the object side surface of the first lens to the image side surface of the seventh lens. 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 in imaging can be eliminated as much as possible, and the imaging quality is further improved. 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.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an imaging lens may be varied to achieve the various results and advantages described in this specification without departing from the claimed subject matter. For example, although seven lenses are exemplified in the embodiment, the imaging lens is not limited to including seven lenses. The camera lens may also include other numbers of lenses, if desired.
Specific examples of an imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, the imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 with positive refractive power has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with negative refractive power has a convex object-side surface S13 and a concave image-side surface S14. The filter E8 has an object side S15 and an image side S16. The imaging lens has an imaging surface S17, and light from an object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 1 shows basic parameters of the imaging lens of embodiment 1, in which the unit of the radius of curvature and the thickness/distance are both 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. The high-order term coefficients A usable for the aspherical mirror surfaces S1 to S14 in example 1 are shown in Table 2-1 and Table 2-2 below4、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
TABLE 2-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.4242E-04 | 5.0431E-05 | -6.4468E-05 | 2.9490E-05 | -2.8436E-05 | 0.0000E+00 | 0.0000E+00 |
| S2 | 6.0110E-05 | -3.4295E-05 | 2.3956E-05 | -2.1308E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -3.2136E-05 | -1.2294E-05 | -6.1047E-07 | 2.3326E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 5.8937E-05 | -5.7560E-05 | 2.5333E-05 | -2.9794E-05 | 1.2878E-05 | -1.4248E-05 | 5.7073E-06 |
| S5 | 1.9315E-05 | -5.0233E-05 | 2.2917E-05 | -2.0311E-05 | 1.7610E-05 | -1.7188E-05 | 3.5227E-06 |
| S6 | -2.1421E-04 | -8.0968E-05 | -5.3741E-05 | -1.8308E-05 | -7.8327E-06 | 3.7053E-06 | 8.0882E-06 |
| S7 | -1.2737E-04 | -3.5264E-04 | -8.8576E-05 | -1.1791E-04 | 4.1863E-05 | -9.4607E-06 | 4.1665E-05 |
| S8 | 6.9972E-04 | 4.0973E-04 | -5.6713E-05 | -5.2371E-06 | -1.2613E-04 | -2.1161E-05 | -3.7792E-05 |
| S9 | -4.9526E-05 | -9.8027E-04 | -4.5345E-04 | -2.2071E-04 | 7.8574E-05 | -4.7790E-05 | 5.4312E-05 |
| S10 | -5.6652E-04 | -9.8813E-04 | 8.6299E-05 | 3.8276E-04 | -1.7407E-04 | -7.4756E-05 | 4.3638E-05 |
| S11 | -6.6599E-03 | 2.4310E-04 | 1.0958E-03 | 3.2159E-04 | -4.5966E-04 | 1.6785E-04 | -3.0684E-05 |
| S12 | -2.6809E-03 | 2.5958E-03 | -1.7010E-03 | 7.4264E-04 | -3.7200E-04 | 1.9293E-04 | -1.6188E-04 |
| S13 | -4.3197E-03 | -8.5845E-05 | 2.1954E-03 | -2.6353E-03 | 8.9382E-04 | -1.4097E-04 | -1.5594E-04 |
| S14 | 1.2176E-02 | -6.1726E-03 | 2.4736E-03 | -2.3579E-03 | 1.2087E-03 | -5.4511E-04 | 4.4501E-04 |
Tables 2 to 2
Fig. 2A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 1, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the 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 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 imaging lens system according to embodiment 1 can achieve good imaging quality.
Example 2
An imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic configuration diagram of an imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the imaging lens, in order from an object side to an image side along an optical axis, comprises: an aperture stop STO, a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 with positive refractive power has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with negative refractive power has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The imaging lens has an imaging surface S17, and light from an object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 3 shows basic parameters of the imaging lens of embodiment 2, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 4-1 and 4-2 show the coefficients A of the high-order terms that can be used for the respective aspherical mirrors S1 to S14 in example 24、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 3
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -2.0051E-02 | -1.3569E-02 | -1.6136E-03 | -1.5277E-03 | 2.3852E-04 | -3.1933E-04 | 1.3494E-04 |
| S2 | -9.9466E-02 | 7.0198E-03 | -2.9870E-03 | 2.5847E-04 | -7.6480E-04 | 2.4582E-05 | -1.5061E-04 |
| S3 | -3.0418E-02 | 2.7368E-02 | 3.9769E-03 | 9.2313E-04 | -2.2805E-04 | -1.8502E-04 | -8.3672E-05 |
| S4 | -7.6060E-03 | 1.5846E-02 | 3.2264E-03 | 1.9062E-03 | 2.7393E-04 | 2.3673E-04 | -5.7040E-05 |
| S5 | -2.6729E-01 | -1.1026E-02 | 2.9709E-03 | 2.1441E-03 | 4.9061E-04 | 1.2698E-04 | -5.8227E-05 |
| S6 | -3.1380E-01 | 2.6371E-03 | 9.3138E-03 | 3.0888E-03 | 9.8928E-04 | -1.5791E-04 | -2.2077E-04 |
| S7 | -1.9192E-01 | -3.3694E-03 | -7.2067E-04 | 3.9022E-03 | 3.0040E-03 | 1.5230E-03 | -4.1205E-05 |
| S8 | -3.2366E-01 | -2.4086E-02 | 3.6171E-04 | 1.0350E-03 | 5.5276E-03 | 2.8550E-03 | 2.0422E-03 |
| S9 | -8.8924E-01 | -1.0279E-01 | 3.6752E-03 | 1.7197E-02 | 2.6877E-03 | 5.5588E-03 | 1.0744E-03 |
| S10 | -2.2133E+00 | 4.5015E-01 | -3.7040E-02 | 1.4619E-02 | -3.1670E-02 | 1.2798E-02 | 7.4203E-04 |
| S11 | -4.7106E+00 | 8.7551E-01 | 5.8429E-02 | -8.7488E-02 | -2.5470E-02 | 3.2547E-02 | 7.9958E-04 |
| S12 | -2.0049E+00 | -1.0954E-01 | 1.6301E-01 | -9.2197E-02 | 6.0413E-02 | -2.3296E-02 | 7.7379E-03 |
| S13 | -2.5683E+00 | 1.3758E+00 | -6.8302E-01 | 3.2712E-01 | -1.4421E-01 | 4.2705E-02 | -4.4457E-03 |
| S14 | -8.4403E+00 | 2.1759E+00 | -6.1422E-01 | 2.2846E-01 | -1.2495E-01 | 6.0320E-02 | -3.2793E-02 |
TABLE 4-1
TABLE 4-2
Fig. 4A shows on-axis chromatic aberration curves of the imaging lens of embodiment 2, which represent the convergent focus shifts of light rays of different wavelengths after passing through the lens. Fig. 4B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the 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 imaging lens of embodiment 2, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 4A to 4D, the imaging lens according to embodiment 2 can achieve good imaging quality.
Example 3
An 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 imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the imaging lens, in order from an object side to an image side along an optical axis, comprises: an aperture stop STO, a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 with positive refractive power has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with negative refractive power has a convex object-side surface S13 and a concave image-side surface S14. The filter E8 has an object side S15 and an image side S16. The imaging lens has an imaging surface S17, and light from an object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 5 shows basic parameters of the imaging lens of embodiment 3, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 6-1 and 6-2 show the coefficients A of the high-order terms which can be used for the respective aspherical mirrors S1 to S14 in example 34、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 5
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -1.5312E-02 | -1.2543E-02 | -1.1688E-03 | -1.5280E-03 | 2.1159E-04 | -3.6481E-04 | 1.2919E-04 |
| S2 | -9.2759E-02 | 7.2888E-03 | -4.1777E-03 | 2.8270E-05 | -6.1496E-04 | 3.9265E-05 | -8.4696E-05 |
| S3 | -3.8850E-02 | 2.6397E-02 | 2.6058E-03 | 1.9126E-04 | -3.2220E-04 | -2.5723E-04 | -6.0640E-05 |
| S4 | -1.1228E-02 | 1.4881E-02 | 3.6720E-03 | 1.4913E-03 | 3.6873E-04 | 1.4285E-04 | -8.8878E-06 |
| S5 | -2.5031E-01 | -9.2231E-03 | 4.7186E-03 | 2.2769E-03 | 4.3457E-04 | 1.4838E-04 | -5.1450E-05 |
| S6 | -3.0141E-01 | 6.5820E-03 | 9.7179E-03 | 4.7835E-04 | 6.7186E-04 | -7.0653E-04 | -2.8862E-04 |
| S7 | -1.8862E-01 | -1.7052E-03 | -1.7935E-03 | 2.1415E-03 | 4.1533E-03 | 1.2729E-03 | 3.4381E-04 |
| S8 | -3.0935E-01 | -2.5869E-02 | -1.2348E-03 | 1.0102E-03 | 5.6787E-03 | 2.8258E-03 | 2.1472E-03 |
| S9 | -7.9273E-01 | -1.2337E-01 | 6.2620E-03 | 1.0099E-02 | 2.4557E-03 | 3.1850E-03 | 1.2843E-03 |
| S10 | -1.9275E+00 | 3.7487E-01 | -9.6090E-03 | 1.7237E-03 | -2.4448E-02 | 8.8289E-03 | 2.6940E-03 |
| S11 | -4.4481E+00 | 7.6194E-01 | 9.1416E-02 | -8.1359E-02 | -2.9262E-02 | 2.6294E-02 | 5.3977E-03 |
| S12 | -2.0781E+00 | -7.3833E-02 | 1.4971E-01 | -8.9293E-02 | 5.9729E-02 | -2.1287E-02 | 6.9165E-03 |
| S13 | -4.4427E+00 | 1.8179E+00 | -8.6414E-01 | 4.0404E-01 | -1.7619E-01 | 5.2466E-02 | -5.8665E-03 |
| S14 | -1.0078E+01 | 2.5872E+00 | -7.0625E-01 | 2.6972E-01 | -1.6557E-01 | 7.6952E-02 | -3.8849E-02 |
TABLE 6-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.3408E-04 | 6.4159E-05 | -6.3254E-05 | 3.2421E-05 | -3.1454E-05 | 0.0000E+00 | 0.0000E+00 |
| S2 | 6.3923E-05 | -3.0248E-05 | 8.4580E-06 | -2.8465E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -3.7122E-05 | 1.8787E-05 | -2.0058E-06 | 1.7416E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 7.8000E-06 | -1.8694E-05 | -1.9461E-06 | -7.6490E-06 | -5.6445E-07 | -1.6495E-06 | 2.0307E-06 |
| S5 | 2.5772E-05 | -3.9179E-05 | 1.7358E-05 | -1.8581E-05 | 1.4544E-05 | -1.4774E-05 | 3.6274E-06 |
| S6 | -2.0824E-04 | -9.9120E-05 | -5.5414E-05 | -3.1923E-05 | 1.8866E-06 | -1.4842E-05 | 1.4518E-05 |
| S7 | 5.9520E-05 | -2.2993E-04 | -9.5030E-05 | -1.2126E-04 | 1.2884E-05 | -3.4546E-05 | 4.8197E-05 |
| S8 | 7.5137E-04 | 5.5735E-04 | 4.1239E-05 | 8.5661E-05 | -8.6196E-05 | -4.0416E-07 | -5.5137E-05 |
| S9 | 6.1674E-04 | -1.9581E-04 | -7.3431E-05 | -1.4833E-04 | 8.7426E-05 | -5.8055E-05 | 3.7327E-05 |
| S10 | -1.1671E-03 | -5.1484E-04 | -4.7461E-05 | 4.4014E-04 | -1.1750E-04 | -8.1004E-05 | 3.1186E-05 |
| S11 | -6.6695E-03 | -8.2165E-04 | 1.1690E-03 | 3.6696E-04 | -4.1686E-04 | 1.1597E-04 | -2.2131E-05 |
| S12 | -2.9598E-03 | 2.7264E-03 | -1.8323E-03 | 8.9531E-05 | 2.0851E-04 | 1.2765E-04 | 4.4597E-05 |
| S13 | -3.0196E-03 | -4.2100E-03 | 6.5201E-03 | -4.9919E-03 | 1.3519E-03 | 1.2040E-04 | -3.9079E-04 |
| S14 | 1.8268E-02 | -1.1368E-02 | 5.0861E-03 | -3.6979E-03 | 1.9632E-03 | -1.2256E-03 | 7.3333E-04 |
TABLE 6-2
Fig. 6A shows on-axis chromatic aberration curves of the imaging lens of embodiment 3, which represent the convergent focus shifts of light rays of different wavelengths after passing through the lens. Fig. 6B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the 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 imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 6A to 6D, the imaging lens system according to embodiment 3 can achieve good imaging quality.
Example 4
An 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 imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the imaging lens includes, in order from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 with positive refractive power has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 with positive refractive power has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with negative refractive power has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The imaging lens has an imaging surface S17, and light from an object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 7 shows basic parameters of the imaging lens of embodiment 4, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 8-1 and 8-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S14 in example 44、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 7
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -1.2448E-02 | -1.5565E-02 | -1.2102E-03 | -2.1586E-03 | 2.1090E-04 | -6.1175E-04 | 9.9063E-05 |
| S2 | -9.3522E-02 | 6.3593E-03 | -4.1703E-03 | -2.7360E-04 | -6.6678E-04 | -4.9058E-05 | -9.9002E-05 |
| S3 | -4.0110E-02 | 2.7871E-02 | 3.2012E-03 | 5.7311E-05 | -3.8812E-04 | -3.2945E-04 | -7.8346E-05 |
| S4 | -1.2720E-02 | 1.6354E-02 | 4.3056E-03 | 1.7780E-03 | 4.3020E-04 | 1.8805E-04 | -1.5759E-05 |
| S5 | -2.4926E-01 | -7.4162E-03 | 4.9285E-03 | 2.9646E-03 | 2.7042E-04 | 2.9451E-04 | -1.4670E-04 |
| S6 | -2.8965E-01 | 4.8870E-03 | 1.0781E-02 | -8.5559E-04 | -1.4207E-03 | -1.8208E-03 | -1.1450E-03 |
| S7 | -1.9059E-01 | -5.8222E-03 | 1.3116E-03 | 2.9528E-03 | 3.6488E-03 | 1.3852E-03 | 1.0685E-04 |
| S8 | -3.0938E-01 | -2.8037E-02 | 3.1941E-03 | 2.9646E-03 | 6.6725E-03 | 3.2041E-03 | 2.2108E-03 |
| S9 | -7.9050E-01 | -1.3175E-01 | 9.6812E-03 | 1.2449E-02 | 3.6446E-03 | 4.1615E-03 | 1.6616E-03 |
| S10 | -1.9263E+00 | 3.7337E-01 | -1.0738E-02 | 2.9680E-04 | -2.3869E-02 | 1.0316E-02 | 1.9765E-03 |
| S11 | -4.4515E+00 | 7.6124E-01 | 9.2762E-02 | -8.3488E-02 | -2.9489E-02 | 2.6390E-02 | 5.6109E-03 |
| S12 | -2.0537E+00 | -6.3786E-02 | 1.4757E-01 | -9.2317E-02 | 5.9633E-02 | -2.1852E-02 | 6.4855E-03 |
| S13 | -4.4406E+00 | 1.8192E+00 | -8.6523E-01 | 4.0591E-01 | -1.7527E-01 | 5.2636E-02 | -4.9222E-03 |
| S14 | -1.0105E+01 | 2.5868E+00 | -6.9335E-01 | 2.6804E-01 | -1.6957E-01 | 7.6381E-02 | -3.5534E-02 |
TABLE 8-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -2.6787E-04 | 3.5500E-05 | -1.3236E-04 | 1.8405E-05 | -6.0758E-05 | 0.0000E+00 | 0.0000E+00 |
| S2 | 2.7070E-05 | -4.4526E-05 | -7.9546E-06 | -3.0159E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -5.2107E-05 | 1.5866E-05 | -5.9605E-06 | 1.5875E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 1.7036E-05 | -2.7478E-05 | 2.2158E-06 | -1.3395E-05 | 3.1831E-06 | -5.3671E-06 | 3.5592E-06 |
| S5 | 9.9132E-05 | -8.4246E-05 | 4.8273E-05 | -4.2001E-05 | 2.5639E-05 | -2.4917E-05 | 1.0369E-05 |
| S6 | -5.7528E-04 | -4.3790E-04 | -1.2411E-04 | -1.0313E-04 | 8.7837E-06 | -1.2869E-05 | 1.7036E-05 |
| S7 | 6.9341E-05 | -3.8235E-04 | -4.0586E-05 | -1.5479E-04 | 4.4041E-05 | -3.5883E-05 | 4.9629E-05 |
| S8 | 7.0812E-04 | 4.4506E-04 | -5.1494E-05 | 1.5583E-05 | -1.2462E-04 | -1.8455E-05 | -5.9789E-05 |
| S9 | 7.4933E-04 | -1.9264E-04 | -1.0663E-04 | -1.5687E-04 | 6.8891E-05 | -5.4269E-05 | 3.4396E-05 |
| S10 | -1.2602E-03 | -4.5380E-04 | 1.8586E-04 | 4.0750E-04 | -1.2747E-04 | -6.6065E-05 | 5.8575E-05 |
| S11 | -6.2901E-03 | -7.3922E-04 | 1.0567E-03 | 2.6980E-04 | -3.4245E-04 | 7.6766E-05 | -5.4767E-06 |
| S12 | -3.5662E-03 | 2.7804E-03 | -1.7870E-03 | 3.7810E-04 | 3.6741E-04 | 2.2773E-04 | 1.2480E-04 |
| S13 | -3.0957E-03 | -2.9704E-03 | 5.8533E-03 | -4.3957E-03 | 1.4155E-03 | 5.4157E-05 | -2.2366E-04 |
| S14 | 1.7804E-02 | -1.1074E-02 | 4.6479E-03 | -3.5461E-03 | 1.9353E-03 | -1.3127E-03 | 6.3084E-04 |
TABLE 8-2
Fig. 8A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 4, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the 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 imaging lens of embodiment 4, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 8A to 8D, the imaging lens according to embodiment 4 can achieve good imaging quality.
Example 5
An 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 diagram of an imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the imaging lens includes, in order from an object side to an image side: an aperture stop STO, a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 with positive refractive power has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with negative refractive power has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The imaging lens has an imaging surface S17, and light from an object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 9 shows basic parameters of the imaging lens of embodiment 5, in which the unit of the radius of curvature and the thickness/distance are millimeters (mm). Tables 10-1 and 10-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S14 in example 54、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 9
TABLE 10-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | -1.8753E-04 | 1.0285E-04 | -9.0150E-05 | 4.9596E-05 | -4.3869E-05 | 0.0000E+00 | 0.0000E+00 |
| S2 | 4.6231E-05 | -2.3617E-05 | 7.3001E-06 | -1.9406E-05 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S3 | -3.6762E-05 | 2.6856E-06 | -9.8241E-06 | 6.1187E-06 | 0.0000E+00 | 0.0000E+00 | 0.0000E+00 |
| S4 | 2.3601E-05 | -1.5379E-05 | 3.9254E-06 | -9.3570E-06 | 1.7109E-06 | -4.1362E-06 | 1.9858E-06 |
| S5 | 5.9214E-05 | -5.1164E-05 | 3.6936E-05 | -2.6558E-05 | 2.0063E-05 | -2.1953E-05 | 8.5076E-06 |
| S6 | -1.6005E-04 | -2.0642E-05 | -4.9598E-05 | -6.8508E-06 | -1.8059E-05 | 1.4743E-06 | 1.9503E-06 |
| S7 | 5.2769E-05 | -2.2302E-04 | -7.9645E-05 | -1.1964E-04 | 4.8319E-06 | -2.5686E-05 | 3.7468E-05 |
| S8 | 7.6038E-04 | 5.5072E-04 | 3.5034E-06 | 6.4801E-05 | -1.1058E-04 | -7.7898E-06 | -6.3867E-05 |
| S9 | 7.8840E-04 | -1.3861E-05 | -4.9127E-05 | -1.0512E-04 | 4.6877E-05 | -4.5370E-05 | 4.8846E-06 |
| S10 | -1.2102E-03 | -3.3965E-04 | 6.8781E-05 | 3.4771E-04 | -4.9417E-05 | -4.8124E-05 | 6.5454E-05 |
| S11 | -6.5460E-03 | -1.0651E-03 | 1.2334E-03 | 1.2093E-04 | -2.5834E-04 | 1.0331E-04 | -2.0512E-05 |
| S12 | -4.7870E-03 | 2.7601E-03 | -1.6787E-03 | 2.2627E-04 | 7.4048E-04 | 1.8395E-04 | 2.2273E-04 |
| S13 | -4.2677E-03 | -1.6593E-03 | 4.8863E-03 | -5.3138E-03 | 2.2688E-03 | -5.7222E-04 | -2.1903E-04 |
| S14 | 1.9160E-02 | -1.3824E-02 | 4.7893E-03 | -3.2533E-03 | 2.3319E-03 | -1.7557E-03 | 9.8820E-04 |
TABLE 10-2
Fig. 10A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 5, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the 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 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 imaging lens according to embodiment 5 can achieve good imaging quality.
Example 6
An 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 configuration diagram of an imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the imaging lens, in order from an object side to an image side along an optical axis, comprises: an aperture stop STO, a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 with negative refractive power has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 with positive refractive power has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with negative refractive power has a concave object-side surface S13 and a concave image-side surface S14. The filter E8 has an object side S15 and an image side S16. The imaging lens has an imaging surface S17, and light from an object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 11 shows basic parameters of the imaging lens of embodiment 6, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 12-1 and 12-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S14 in example 64、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
TABLE 11
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -4.5983E-02 | -1.5605E-02 | -4.6510E-03 | -1.8799E-03 | -4.7928E-04 | -2.8242E-04 | -2.8057E-05 |
| S2 | -1.1876E-01 | 1.5640E-02 | -8.7594E-03 | 8.4609E-04 | -1.0132E-03 | 4.1963E-04 | -4.6272E-05 |
| S3 | -6.8704E-02 | 3.5634E-02 | -6.9850E-04 | 9.5598E-04 | -4.4847E-04 | -1.6074E-05 | -1.1316E-04 |
| S4 | -2.5052E-02 | 2.3380E-02 | 2.2365E-03 | 1.5453E-03 | 2.9728E-05 | 2.0083E-04 | -8.8719E-05 |
| S5 | -2.7093E-01 | -8.3383E-03 | 4.8410E-03 | 1.9825E-03 | 1.0962E-04 | 3.6037E-04 | -1.3621E-04 |
| S6 | -3.2942E-01 | 3.6261E-04 | 1.1957E-02 | 1.5992E-03 | -1.4136E-04 | -5.0483E-04 | -6.5905E-04 |
| S7 | -1.6862E-01 | -6.3697E-03 | -3.3941E-03 | 3.5789E-03 | 1.7843E-03 | 1.3986E-03 | 1.5266E-04 |
| S8 | -3.6413E-01 | -1.7865E-02 | -2.2129E-03 | 7.9291E-03 | 6.2796E-03 | 3.9354E-03 | 1.7791E-03 |
| S9 | -1.1706E+00 | -8.5231E-02 | 3.7534E-02 | 4.5915E-02 | 1.1020E-02 | 2.9183E-03 | -4.0130E-03 |
| S10 | -2.3759E+00 | 5.7341E-01 | -7.2542E-02 | 7.7402E-03 | -3.1373E-02 | 2.0382E-02 | 4.2161E-04 |
| S11 | -5.1773E+00 | 1.1551E+00 | 3.8626E-02 | -1.3217E-01 | -3.2757E-02 | 6.1742E-02 | 2.7878E-04 |
| S12 | -2.0563E+00 | -7.6091E-02 | 9.3279E-02 | -9.1180E-02 | 5.6958E-02 | -1.5822E-02 | 1.0162E-02 |
| S13 | -6.3146E-01 | 9.1244E-01 | -4.9241E-01 | 2.6203E-01 | -1.2025E-01 | 3.6269E-02 | -5.0755E-03 |
| S14 | -7.0098E+00 | 1.6570E+00 | -3.4067E-01 | 1.6322E-01 | -1.1536E-01 | 3.8966E-02 | -2.5119E-02 |
TABLE 12-1
TABLE 12-2
Fig. 12A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 6, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the 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 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 imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic configuration diagram of an imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the imaging lens, in order from an object side to an image side along an optical axis, comprises: an aperture stop STO, a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with negative refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 with negative refractive power has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 with positive refractive power has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with negative refractive power 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 imaging lens has an imaging surface S17, and light from an object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 13 shows basic parameters of the imaging lens of embodiment 7, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 14-1 and 14-2 show the high-order term coefficients A that can be used for the aspherical mirror surfaces S1 to S14 in example 74、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
Watch 13
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -4.5990E-02 | -1.5684E-02 | -4.6280E-03 | -1.8721E-03 | -4.6100E-04 | -2.7656E-04 | -2.1292E-05 |
| S2 | -1.1870E-01 | 1.5662E-02 | -8.7574E-03 | 8.5736E-04 | -1.0176E-03 | 4.0946E-04 | -5.5529E-05 |
| S3 | -6.8706E-02 | 3.5641E-02 | -7.1301E-04 | 9.6867E-04 | -4.4266E-04 | -1.3705E-05 | -1.1133E-04 |
| S4 | -2.5035E-02 | 2.3381E-02 | 2.2415E-03 | 1.5388E-03 | 3.3219E-05 | 1.9822E-04 | -8.7664E-05 |
| S5 | -2.7091E-01 | -8.2948E-03 | 4.8447E-03 | 1.9805E-03 | 1.0532E-04 | 3.5389E-04 | -1.3929E-04 |
| S6 | -3.2946E-01 | 3.2221E-04 | 1.1979E-02 | 1.6079E-03 | -1.3576E-04 | -4.9844E-04 | -6.5023E-04 |
| S7 | -1.6862E-01 | -6.3169E-03 | -3.3947E-03 | 3.5833E-03 | 1.7808E-03 | 1.4028E-03 | 1.4725E-04 |
| S8 | -3.6406E-01 | -1.7921E-02 | -2.2292E-03 | 7.9351E-03 | 6.2953E-03 | 3.9464E-03 | 1.7796E-03 |
| S9 | -1.1707E+00 | -8.5397E-02 | 3.7633E-02 | 4.5895E-02 | 1.1026E-02 | 2.9113E-03 | -3.9836E-03 |
| S10 | -2.3757E+00 | 5.7350E-01 | -7.2703E-02 | 7.7531E-03 | -3.1373E-02 | 2.0374E-02 | 4.2965E-04 |
| S11 | -5.1772E+00 | 1.1554E+00 | 3.8827E-02 | -1.3230E-01 | -3.2871E-02 | 6.1822E-02 | 3.3256E-04 |
| S12 | -2.0559E+00 | -7.6278E-02 | 9.3054E-02 | -9.1223E-02 | 5.6932E-02 | -1.5774E-02 | 1.0164E-02 |
| S13 | -6.3184E-01 | 9.1245E-01 | -4.9245E-01 | 2.6203E-01 | -1.2020E-01 | 3.6226E-02 | -5.0942E-03 |
| S14 | -7.0111E+00 | 1.6568E+00 | -3.4043E-01 | 1.6341E-01 | -1.1549E-01 | 3.9077E-02 | -2.5208E-02 |
TABLE 14-1
TABLE 14-2
Fig. 14A shows on-axis chromatic aberration curves of the imaging lens of embodiment 7, which represent the convergent focus shifts of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the imaging lens according to embodiment 7 can achieve good imaging quality.
Example 8
An imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic configuration diagram of an imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the imaging lens, in order from an object side to an image side along an optical axis, comprises: an aperture stop STO, a first lens E1, a second lens E2, an aperture stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.
The first lens element E1 with positive refractive power has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 with positive refractive power has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 with negative refractive power has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 with positive refractive power has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 with negative refractive power has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 with positive refractive power has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 with negative refractive power 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 imaging lens has an imaging surface S17, and light from an object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 15 shows basic parameters of the imaging lens of embodiment 8, in which the unit of the radius of curvature and the thickness/distance are both millimeters (mm). Tables 16-1 and 16-2 show the coefficients A of the high-order terms which can be used for the respective aspherical mirrors S1 to S14 in example 84、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30Wherein each aspherical surface shape can be defined by the formula (1) given in the above-described embodiment 1.
Watch 15
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 |
| S1 | -4.8965E-02 | -1.3413E-02 | -5.5329E-03 | -1.6476E-03 | -7.9124E-04 | -1.6728E-04 | -7.2824E-05 |
| S2 | -1.2573E-01 | 1.5992E-02 | -5.8689E-03 | -5.7548E-04 | -7.8258E-04 | -1.7067E-04 | -6.2963E-06 |
| S3 | -7.3676E-02 | 3.8662E-02 | 1.9202E-03 | 1.3651E-03 | -1.6259E-04 | -5.3965E-05 | -1.4444E-04 |
| S4 | -2.3334E-02 | 1.8049E-02 | 3.4141E-03 | 1.2081E-03 | 5.1286E-04 | 8.0667E-05 | 2.8072E-05 |
| S5 | -2.7509E-01 | -1.2228E-02 | 3.0900E-03 | 1.5149E-03 | 5.9152E-04 | 1.1374E-04 | 3.9042E-07 |
| S6 | -3.2033E-01 | 7.0122E-03 | 1.0639E-02 | 4.0531E-03 | 9.9037E-04 | -2.0463E-04 | -4.3766E-04 |
| S7 | -1.6500E-01 | -1.0160E-02 | 1.2670E-03 | 4.1661E-03 | 3.5786E-03 | 9.1878E-04 | 1.4825E-04 |
| S8 | -3.6924E-01 | -1.3289E-02 | -1.6407E-03 | 7.5178E-03 | 7.0815E-03 | 4.8666E-03 | 2.0696E-03 |
| S9 | -1.1273E+00 | -8.2512E-02 | 3.4021E-02 | 4.3366E-02 | 1.2569E-02 | 5.0516E-03 | -3.7907E-03 |
| S10 | -2.3965E+00 | 5.6889E-01 | -7.0411E-02 | 6.6128E-03 | -3.2559E-02 | 2.0079E-02 | -1.4937E-03 |
| S11 | -5.1550E+00 | 1.1268E+00 | 2.1918E-02 | -1.2658E-01 | -1.5732E-02 | 4.8797E-02 | -8.9605E-03 |
| S12 | -1.9903E+00 | -8.2550E-02 | 1.4746E-01 | -8.8012E-02 | 5.7983E-02 | -2.2935E-02 | 8.3176E-03 |
| S13 | -6.0387E-01 | 8.9738E-01 | -4.9070E-01 | 2.5754E-01 | -1.2925E-01 | 4.3431E-02 | -2.7871E-03 |
| S14 | -6.9848E+00 | 1.6224E+00 | -3.6060E-01 | 1.5314E-01 | -1.0597E-01 | 3.8765E-02 | -2.1591E-02 |
TABLE 16-1
| Flour mark | A18 | A20 | A22 | A24 | A26 | A28 | A30 |
| S1 | 9.1887E-05 | 6.0244E-05 | 8.5289E-05 | 3.5322E-05 | 3.1587E-05 | 0.0000E+00 | 0.0000E+00 |
| S2 | 6.3220E-05 | 2.1959E-05 | 1.3068E-05 | -3.1676E-06 | 4.2943E-06 | 0.0000E+00 | 0.0000E+00 |
| S3 | 1.4450E-05 | -4.3643E-05 | 1.8530E-05 | -1.9323E-05 | 1.2295E-05 | 0.0000E+00 | 0.0000E+00 |
| S4 | -1.0198E-05 | -7.3922E-06 | -3.3673E-06 | -1.1078E-05 | 2.3360E-06 | -8.2451E-06 | 3.2956E-06 |
| S5 | -2.5250E-05 | -2.0023E-05 | -1.1050E-05 | 3.1413E-06 | -7.3087E-06 | 3.9920E-07 | -2.1702E-06 |
| S6 | -2.1780E-04 | -1.3944E-04 | -3.4700E-05 | -9.2672E-06 | 1.3907E-06 | 1.3965E-05 | 1.0173E-05 |
| S7 | -2.3023E-04 | -1.3572E-04 | -1.3802E-04 | -3.2271E-06 | -2.4509E-05 | 3.8744E-05 | 8.2063E-07 |
| S8 | 8.7264E-04 | 8.8889E-05 | -9.7546E-05 | -2.0033E-04 | -1.2795E-04 | -9.0826E-05 | -2.8069E-05 |
| S9 | -4.8378E-03 | -3.8452E-03 | -1.7364E-03 | -5.6372E-04 | 3.9611E-06 | 5.7978E-05 | 9.2465E-05 |
| S10 | -1.8221E-03 | -9.2849E-04 | 9.6320E-04 | 2.5421E-04 | -4.6080E-04 | -3.2507E-04 | -9.2119E-05 |
| S11 | -7.4840E-03 | 1.2087E-03 | 7.9656E-04 | 3.3806E-04 | 1.5816E-03 | 1.1329E-03 | 2.3214E-04 |
| S12 | -1.7028E-03 | 2.0142E-03 | -1.9519E-03 | 1.1320E-03 | 1.4036E-07 | 2.8087E-04 | 1.3099E-04 |
| S13 | -7.3615E-03 | 1.6402E-03 | 3.1596E-03 | -3.4353E-03 | 1.7941E-03 | -4.3652E-04 | 1.3670E-04 |
| S14 | 1.1632E-02 | -4.7253E-03 | 2.5209E-03 | -2.4762E-03 | 1.7716E-03 | -6.3186E-05 | 8.0539E-04 |
TABLE 16-2
Fig. 16A shows on-axis chromatic aberration curves of the imaging lens of embodiment 8, which represent the convergent focus shifts of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a chromatic aberration of magnification curve of the imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the imaging lens according to embodiment 8 can achieve good imaging quality.
Further, in embodiments 1 to 8, the effective focal length f, the effective focal length values f1 to f7 of the respective lenses, the distance TTL along the optical axis from the object side surface of the first lens to the imaging surface of the imaging lens, half ImgH of the diagonal length of the effective pixel area on the imaging surface, the maximum field angle FOV of the imaging lens, and the f-number Fno of the imaging lens are as shown in table 17.
| Parameters/examples | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| f(mm) | 6.58 | 6.63 | 6.45 | 6.39 | 6.43 | 6.62 | 6.62 | 6.55 |
| f1(mm) | 8.60 | 8.55 | 8.23 | 8.14 | 8.14 | 8.31 | 8.31 | 9.09 |
| f2(mm) | -68.10 | -64.49 | -59.09 | -58.41 | -58.42 | -76.36 | -75.59 | 152.27 |
| f3(mm) | -47.23 | -49.91 | -42.76 | -52.96 | -60.09 | -68.91 | -69.64 | -28.35 |
| f4(mm) | 17.69 | 17.71 | 17.05 | 18.43 | 16.55 | 26.30 | 26.18 | 18.61 |
| f5(mm) | -14.00 | -12.11 | -13.09 | -12.71 | -10.12 | -13.15 | -13.10 | -14.45 |
| f6(mm) | 5.97 | 5.80 | 6.18 | 6.05 | 5.66 | 5.82 | 5.82 | 5.85 |
| f7(mm) | -5.25 | -5.44 | -5.70 | -5.69 | -5.62 | -5.16 | -5.16 | -4.86 |
| TTL(mm) | 8.21 | 8.26 | 8.09 | 8.02 | 8.06 | 8.18 | 8.17 | 8.13 |
| ImgH(mm) | 6.78 | 6.78 | 6.78 | 6.78 | 6.78 | 6.63 | 6.63 | 6.61 |
| FOV(°) | 86.7 | 86.0 | 85.5 | 85.5 | 85.6 | 82.3 | 82.3 | 86.4 |
| Fno | 1.56 | 1.60 | 1.58 | 1.58 | 1.58 | 1.58 | 1.58 | 1.58 |
Table 17 each of the conditional expressions in example 1 to example 8 satisfies the condition shown in table 18.
| Conditions/examples | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| TTL/ImgH | 1.21 | 1.22 | 1.19 | 1.18 | 1.19 | 1.23 | 1.23 | 1.23 |
| f3/f4 | -2.67 | -2.82 | -2.51 | -2.87 | -3.63 | -2.62 | -2.66 | -1.52 |
| f5/R10 | -2.68 | -2.54 | -2.49 | -2.46 | -1.69 | -2.64 | -2.63 | -2.81 |
| f7/R14 | -1.88 | -2.13 | -2.70 | -2.70 | -2.69 | -1.49 | -1.49 | -1.44 |
| (R12+R11)/(R12-R11) | 1.91 | 1.90 | 2.03 | 1.98 | 1.69 | 1.76 | 1.76 | 1.79 |
| (R2+R1)/(R2-R1) | 1.75 | 1.73 | 1.60 | 1.58 | 1.57 | 1.71 | 1.71 | 2.01 |
| CT4/CT3 | 2.51 | 2.57 | 2.44 | 2.37 | 2.29 | 2.70 | 2.70 | 2.62 |
| ET6/CT6 | 1.00 | 1.00 | 1.08 | 1.07 | 1.00 | 1.34 | 1.33 | 1.46 |
| SAG61/SAG62 | 1.00 | 1.00 | 1.08 | 1.07 | 1.00 | 1.39 | 1.38 | 1.54 |
| SAG71/SAG72 | 1.30 | 1.37 | 1.11 | 1.00 | 1.02 | 0.98 | 0.98 | 0.94 |
| T67/T56 | 7.22 | 8.60 | 8.99 | 7.99 | 10.89 | 6.00 | 5.99 | 6.56 |
| T23/T34 | 4.96 | 5.14 | 12.70 | 13.38 | 6.02 | 9.22 | 9.09 | 9.80 |
| V5-V3 | 18.20 | 18.20 | 18.20 | 18.20 | 18.20 | 18.20 | 18.20 | 18.20 |
Watch 18
The present application also provides an imaging Device, which is provided with an electron sensing element to form an image, wherein the electron sensing element may be a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the above-described imaging lens.
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 protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the scope of the present application. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (17)
1. The imaging lens assembly, in order from an object side to an image side along an optical axis, comprises: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element with refractive power,
the third lens element with negative refractive power;
the fifth lens element with negative refractive power;
the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concave surface; and
the abbe number V1 of the first lens satisfies: v1 > 90.
2. The imaging lens of claim 1, wherein a distance TTL along the optical axis from an object side surface of the first lens element to an imaging surface of the imaging lens and a half ImgH of a diagonal length of an effective pixel area on the imaging surface satisfy:
TTL/ImgH<1.3。
3. the imaging lens according to claim 2, wherein ImgH, which is half the diagonal length of the effective pixel area on the imaging plane, satisfies:
ImgH＞6.0。
4. the imaging lens according to claim 1, wherein a maximum field angle FOV of the imaging lens satisfies:
80°＜FOV＜90°。
5. the imaging lens according to claim 1, wherein an effective focal length f5 of the fifth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy:
-3.0＜f5/R10＜-1.5。
6. the imaging lens according to claim 1, wherein an effective focal length f7 of the seventh lens and a radius of curvature R14 of an image side surface of the seventh lens satisfy:
-3.0＜f7/R14＜-1.0。
7. the imaging lens according to claim 1, wherein 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:
1.5＜(R12+R11)/(R12-R11)＜2.5。
8. the imaging lens according to claim 1, wherein a radius of curvature R1 of an object-side surface of the first lens and a radius of curvature R2 of an image-side surface of the first lens satisfy:
1.5＜(R2+R1)/(R2-R1)＜2.5。
9. the imaging lens according to claim 1, wherein a center thickness CT4 of the fourth lens on the optical axis and a center thickness CT3 of the third lens on the optical axis satisfy:
2.0＜CT4/CT3＜3.0。
10. the imaging lens according to claim 1, wherein an edge thickness ET6 of the sixth lens and a center thickness CT6 of the sixth lens on the optical axis satisfy:
1.0≤ET6/CT6＜1.5。
11. the imaging lens according to any one of claims 1 to 10, wherein an on-axis distance SAG61 from an intersection of an object-side surface of the sixth lens and the optical axis to an effective radius vertex of the object-side surface of the sixth lens, and an on-axis distance SAG62 from an intersection of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of an image-side surface of the sixth lens satisfy:
1.0≤SAG61/SAG62＜1.6。
12. the imaging lens according to any one of claims 1 to 10, wherein an on-axis distance from 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 SAG71, and 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 SAG72 satisfy:
0.5＜SAG71/SAG72＜1.5。
13. the imaging lens according to any one of claims 1 to 10, wherein a separation distance T67 of the sixth lens and the seventh lens on the optical axis and a separation distance T56 of the fifth lens and the sixth lens on the optical axis satisfy:
5.5＜T67/T56＜11.0。
14. the imaging lens according to any one of claims 1 to 10, wherein an abbe number V5 of the fifth lens and an abbe number V3 of the third lens satisfy:
0＜V5-V3＜20。
15. the imaging lens of any one of claims 1 to 10, wherein an effective focal length f of the imaging lens and an entrance pupil diameter EPD of the imaging lens satisfy:
f/EPD≤1.6。
16. the imaging lens according to any one of claims 1 to 10, wherein an effective focal length f3 of the third lens and an effective focal length f4 of the fourth lens satisfy:
-4.0＜f3/f4＜-1.5。
17. the imaging lens according to any one of claims 1 to 10, wherein a separation distance T23 on the optical axis between the second lens and the third lens and a separation distance T34 on the optical axis between the third lens and the fourth lens satisfy:
4.5＜T23/T34＜14.0。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220837599.4U CN217007835U (en) | 2022-04-12 | 2022-04-12 | Camera lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220837599.4U CN217007835U (en) | 2022-04-12 | 2022-04-12 | Camera lens |
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| CN217007835U true CN217007835U (en) | 2022-07-19 |
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