CN212009119U - Optical imaging lens - Google Patents
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- CN212009119U CN212009119U CN202020507733.5U CN202020507733U CN212009119U CN 212009119 U CN212009119 U CN 212009119U CN 202020507733 U CN202020507733 U CN 202020507733U CN 212009119 U CN212009119 U CN 212009119U
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Abstract
The application discloses an optical imaging lens, it includes from the object side to the image side along the optical axis in proper order: a first lens having a negative optical power; a second lens having an optical power; a third lens; a fourth lens having a focal power, wherein the object-side surface of the fourth lens is convex, and the image-side surface of the fourth lens is concave; a fifth lens having a refractive power, an object side surface of which is concave; a sixth lens; and a seventh lens; wherein, the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies that ImgH is more than or equal to 5.20 mm.
Description
Technical Field
The present application relates to the field of optical elements, and more particularly, to an optical imaging lens.
Background
With the upgrade and update of the consumer electronic products and the development of the image software function and the video software function on the consumer electronic products. A camera module is generally disposed on a portable device such as a mobile phone or a tablet computer, so that the portable device has a camera function. The camera module is generally provided with a Charge-coupled Device (CCD) type image sensor or a Complementary Metal Oxide Semiconductor (CMOS) type image sensor, and an optical imaging lens. The optical imaging lens can collect light rays on the object side, the imaging light rays travel along the light path of the optical imaging lens and irradiate the image sensor, and then the image sensor converts optical signals into electric signals to form image data.
The trend of portable devices to be lighter and thinner is stronger, and with the improvement of performance and reduction of size of CCD and CMOS devices, especially with the popularization of large-size and high-pixel CMOS chips, higher requirements are also put forward for high imaging quality and miniaturization of the associated imaging lens.
In order to meet the miniaturization requirement and the imaging requirement, an optical imaging lens with characteristics of a large image plane, a large wide angle and the like is needed on the basis of considering the miniaturization characteristic.
SUMMERY OF THE UTILITY MODEL
The present application provides an optical imaging lens applicable to portable electronic products that may solve, at least, or in part, at least one of the above-mentioned disadvantages of the related art.
A first aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having a negative optical power; a second lens having an optical power; a third lens; a fourth lens having a focal power, wherein the object-side surface of the fourth lens is convex, and the image-side surface of the fourth lens is concave; a fifth lens having a refractive power, an object side surface of which is concave; a sixth lens; and a seventh lens; wherein, the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens can satisfy that the ImgH is more than or equal to 5.20 mm.
In one embodiment, the first lens has at least one aspherical mirror surface from the object-side surface to the image-side surface of the seventh lens.
In one embodiment, the total effective focal length f of the optical imaging lens and a half of the Semi-FOV of the maximum field angle of the optical imaging lens may satisfy 5mm < f × tan (Semi-FOV) < 7 mm.
In one embodiment, the maximum field angle FOV of the optical imaging lens may satisfy 110 ° < FOV < 130 °.
In one embodiment, a distance TTL from an object side surface of the first lens element to an imaging surface on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface may satisfy TTL/ImgH < 1.55.
In one embodiment, the effective focal length f7 of the seventh lens and the radius of curvature R13 of the object side surface of the seventh lens may satisfy | f7/R13| < 1.7.
In one embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens may satisfy 1.5 < (R7+ R8)/R8 < 4.1.
In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens may satisfy 2.0 < | f/f6| + | f/f7| < 3.5.
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 separation distance T23 of the second lens and the third lens on the optical axis may satisfy 4.5 < (CT1+ CT2+ CT3)/T23 < 7.5.
In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the total effective focal length f of the optical imaging lens can satisfy 0.5 < R7/f < 3.5.
In one embodiment, an on-axis distance SAG11 between an intersection of the object-side surface of the first lens and the optical axis to an effective radius vertex of the object-side surface of the first lens and an on-axis distance SAG71 between an intersection of the object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens may satisfy-2 < SAG11/SAG71 < 0.
In one embodiment, the on-axis distance SAG32 between the intersection of the edge thickness ET3 of the third lens and the image-side surface and the optical axis of the third lens to the apex of the effective radius of the image-side surface of the third lens may satisfy-1.0 < ET3/SAG32 < -0.5.
In one embodiment, the combined focal length f234 of the second lens, the third lens and the fourth lens and the total effective focal length f of the optical imaging lens may satisfy 1.0 < f234/f < 2.0.
In one embodiment, the edge thickness ET7 of the seventh lens may satisfy 1.0mm < ET7 < 1.5 mm.
In one embodiment, the optical imaging lens further comprises a diaphragm disposed between the second lens and the third lens.
In one embodiment, the object-side surface of the seventh lens element can be convex and the image-side surface of the seventh lens element can be concave.
A second aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having a negative optical power; a second lens having an optical power; a third lens; a fourth lens having a focal power, wherein the object-side surface of the fourth lens is convex, and the image-side surface of the fourth lens is concave; a fifth lens having optical power; a sixth lens; and a seventh lens; wherein, the total effective focal length f of the optical imaging lens and half of the maximum field angle Semi-FOV of the optical imaging lens can satisfy 5mm < f × tan (Semi-FOV) < 7 mm.
In one embodiment, the maximum field angle FOV of the optical imaging lens may satisfy 110 ° < FOV < 130 °.
In one embodiment, the half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, ImgH, can satisfy ImgH ≧ 5.20 mm.
In one embodiment, a distance TTL from an object side surface of the first lens element to an imaging surface on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface may satisfy TTL/ImgH < 1.55.
In one embodiment, the effective focal length f7 of the seventh lens and the radius of curvature R13 of the object side surface of the seventh lens may satisfy | f7/R13| < 1.7.
In one embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens may satisfy 1.5 < (R7+ R8)/R8 < 4.1.
In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f6 of the sixth lens, and the effective focal length f7 of the seventh lens may satisfy 2.0 < | f/f6| + | f/f7| < 3.5.
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 separation distance T23 of the second lens and the third lens on the optical axis may satisfy 4.5 < (CT1+ CT2+ CT3)/T23 < 7.5.
In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens and the total effective focal length f of the optical imaging lens can satisfy 0.5 < R7/f < 3.5.
In one embodiment, an on-axis distance SAG11 between an intersection of the object-side surface of the first lens and the optical axis to an effective radius vertex of the object-side surface of the first lens and an on-axis distance SAG71 between an intersection of the object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens may satisfy-2 < SAG11/SAG71 < 0.
In one embodiment, the on-axis distance SAG32 between the intersection of the edge thickness ET3 of the third lens and the image-side surface and the optical axis of the third lens to the apex of the effective radius of the image-side surface of the third lens may satisfy-1.0 < ET3/SAG32 < -0.5.
In one embodiment, the combined focal length f234 of the second lens, the third lens and the fourth lens and the total effective focal length f of the optical imaging lens may satisfy 1.0 < f234/f < 2.0.
In one embodiment, the edge thickness ET7 of the seventh lens may satisfy 1.0mm < ET7 < 1.5 mm.
In one embodiment, the optical imaging lens further comprises a diaphragm disposed between the second lens and the third lens.
In one embodiment, the object side surface of the fifth lens may be concave.
In one embodiment, the object-side surface of the seventh lens element can be convex and the image-side surface of the seventh lens element can be concave.
The optical imaging lens comprises seven lenses, and the optical focal power, the surface type, the center thickness of each lens, the axial distance between the lenses and the like are reasonably distributed, so that the optical imaging lens has at least one beneficial effect of large image surface, large wide angle, miniaturization, good imaging quality and the like.
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 2C show an on-axis chromatic aberration curve, an astigmatic 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 4C show an on-axis chromatic aberration curve, an astigmatic 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 6C show an on-axis chromatic aberration curve, an astigmatic 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 8C show an on-axis chromatic aberration curve, an astigmatic curve, and a chromatic aberration of magnification curve, respectively, of an 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 10C show an on-axis chromatic aberration curve, an astigmatic 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 12C show an on-axis chromatic aberration curve, an astigmatic curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application; fig. 14A to 14C show an on-axis chromatic aberration curve, an astigmatic curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;
fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application; fig. 16A to 16C show an on-axis chromatic aberration curve, an astigmatism curve, and a chromatic aberration of magnification curve, respectively, of the optical 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. 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.
The optical imaging lens according to an exemplary embodiment of the present application may include, for example, 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, any adjacent two lenses may have an air space therebetween.
In an exemplary embodiment, the first lens has a negative optical power; the second lens may have a positive or negative optical power; the fourth lens can have positive focal power or negative focal power, and the object side surface of the fourth lens can be a convex surface, and the image side surface of the fourth lens can be a concave surface; the fifth lens may have a positive power or a negative power. Illustratively, the third lens may have a positive optical power or a negative optical power. Illustratively, the sixth lens may have a positive optical power or a negative optical power. Illustratively, the seventh lens may have a positive power or a negative power. Through reasonable positive and negative distribution of focal power of each component of the lens and the lens surface curvature, the aberration of the optical imaging lens can be effectively balanced, so that the optical imaging lens has a better imaging function.
In an exemplary embodiment, the object side surface of the fifth lens may be a concave surface.
In an exemplary embodiment, an object-side surface of the seventh lens element may be convex and an image-side surface of the seventh lens element may be concave.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm. The diaphragm may be disposed at an appropriate position as needed, for example, between the second lens and the third 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.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression ImgH ≧ 5.20mm, where ImgH is half the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens. By controlling the image height, the optical imaging lens has the characteristic of high pixel, and the resolution of the optical imaging lens can be effectively improved. More specifically, ImgH may satisfy 5.20 mm. ltoreq. ImgH.ltoreq.5.40 mm.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 5mm < f × tan (Semi-FOV) < 7mm, where f is a total effective focal length of the optical imaging lens and the Semi-FOV is half of a maximum field angle of the optical imaging lens. By controlling the conditional expression, the focal power of each lens can be reasonably distributed, and the optical imaging lens has a larger image surface, so that the resolution of the imaging lens can be improved. More specifically, f and Semi-FOV may satisfy 5.60mm < f × tan (Semi-FOV) < 6.20 mm.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 110 ° < FOV < 130 °, where FOV is a maximum angle of view of the optical imaging lens. By controlling the conditional expression, the optical imaging lens has a larger field angle, and the imaging range of the optical imaging lens is increased. More specifically, the FOV may satisfy 115 ° < FOV < 125 °.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression TTL/ImgH < 1.55, where TTL is a distance on an optical axis from an object side surface of the first lens to an imaging plane, and ImgH is a half of a diagonal length of an effective pixel area on the imaging plane. By controlling the ratio of the total optical length to the image height of the optical imaging lens, the optical imaging lens is compact in structure and small in size. The optical imaging lens can have better market prospect. More specifically, TTL and ImgH can satisfy 1.40 < TTL/ImgH < 1.54.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression | f7/R13| < 1.7, where f7 is an effective focal length of the seventh lens and R13 is a radius of curvature of an object-side surface of the seventh lens. The shape of the seventh lens can be effectively controlled by controlling the absolute value of the ratio of the effective focal length of the seventh lens to the curvature radius of the seventh lens, so that the deflection of the incident light of the optical imaging lens at the seventh lens is effectively controlled, the seventh lens obtains better manufacturability, and the optical imaging lens has better aberration correction capability. More specifically, f7 and R13 can satisfy 0.8 < | f7/R13| < 1.7.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.5 < (R7+ R8)/R8 < 4.1, where R7 is a radius of curvature of an object-side surface of the fourth lens and R8 is a radius of curvature of an image-side surface of the fourth lens. By controlling the conditional expression, the shape of the fourth lens can be effectively controlled, so that the refraction angle of the incident light of the optical imaging lens at the fourth lens is controlled, the optical imaging lens has good processability, and the optical imaging lens is favorably matched with a chip better. More specifically, R7 and R8 satisfy 1.90 < (R7+ R8)/R8 < 4.05.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.0 < | f/f6| + | f/f7| < 3.5, where f is a total effective focal length of the optical imaging lens, f6 is an effective focal length of the sixth lens, and f7 is an effective focal length of the seventh lens. By controlling the conditional expression, the effective focal length of the sixth lens and the effective focal length of the seventh lens are favorably restrained, and the focal powers of the adjacent sixth lens and the seventh lens are matched, so that astigmatism and curvature of field generated by the lenses in the image side directions of the sixth lens and the seventh lens can be effectively reduced, and the imaging quality of the optical imaging system is improved. More specifically, f6, and f7 may satisfy 2.0 < | f/f6| + | f/f7| < 3.2.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 4.5 < (CT1+ CT2+ CT3)/T23 < 7.5, where CT1 is a central thickness of the first lens on the optical axis, CT2 is a central thickness of the second lens on the optical axis, CT3 is a central thickness of the third lens on the optical axis, and T23 is a separation distance of the second lens and the third lens on the optical axis. By controlling the conditional expression, the central thicknesses of the first three lenses and the air interval between the second lens and the third lens can be effectively controlled, the contribution of the first three lenses to the curvature of field of the optical imaging lens is reduced, and the optical imaging lens has better image quality. More specifically, CT1, CT2, CT3 and T23 satisfy 4.80 < (CT1+ CT2+ CT3)/T23 < 7.40.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5 < R7/f < 3.5, where R7 is a radius of curvature of an object side surface of the fourth lens, and f is a total effective focal length of the optical imaging lens. By controlling the ratio of the curvature radius of the object side surface of the fourth lens to the total effective focal length within a certain range, the contribution of the fourth lens to the spherical aberration of the lens can be controlled, so that the lens has smaller spherical aberration, and the imaging capability of the lens is improved. More specifically, R7 and f can satisfy 0.90 < R7/f < 3.49.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-2 < SAG11/SAG71 < 0, where SAG11 is an on-axis distance between an intersection of an object-side surface of the first lens and the optical axis to an effective radius vertex of the object-side surface of the first lens, and SAG71 is an on-axis distance between an intersection 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. By controlling the ratio of the rise of the object side surface of the first lens to the rise of the object side surface of the seventh lens, the shape of the first lens and the shape of the seventh lens can be effectively controlled, the processability of the two lenses is improved, the light trend of the edge field of view can be effectively controlled, and the optical imaging lens can be better matched with a chip. More specifically, SAG11 and SAG71 may satisfy-1.50 < SAG11/SAG71 < -0.90.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-1.0 < ET3/SAG32 < -0.5, where ET3 is an edge thickness of the third lens, and SAG32 is an on-axis distance between an intersection of an image-side surface of the third lens and an optical axis to an effective radius vertex of the image-side surface of the third lens. By controlling the ratio of the edge thickness of the third lens and the rise of the image-side surface thereof, the shape of the third lens can be effectively controlled. More specifically, ET3 and SAG32 can satisfy-0.98 < ET3/SAG32 < -0.70.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < f234/f < 2.0, where f234 is a combined focal length of the second lens, the third lens, and the fourth lens, and f is a total effective focal length of the optical imaging lens. By controlling the conditional expression, the spherical aberration contribution amounts of the second lens, the third lens and the fourth lens can be effectively controlled, so that the on-axis field of view of the optical imaging lens obtains good imaging quality. More specifically, f234 and f may satisfy 1.20 < f234/f < 1.80.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0mm < ET7 < 1.5mm, where ET7 is an edge thickness of the seventh lens. By controlling the conditional expression, the shape of the seventh lens can be effectively controlled, and the processability of the seventh lens is ensured, so that the seventh lens is beneficial to forming and assembling, and the imaging capability of the optical imaging system is further improved. More specifically, ET7 may satisfy 1.03mm < ET7 < 1.30 mm.
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, the surface type, the central thickness of each lens, the on-axis distance between each lens and the like, the volume of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the machinability of the imaging lens can be improved, so that the optical imaging lens is more beneficial to production and processing and can be suitable for portable electronic products. Meanwhile, the optical imaging lens further has excellent optical performances such as a large image plane, a large wide angle, high pixels, high resolution, high imaging quality and the like.
In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror 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.
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 2C. Fig. 1 shows a schematic structural diagram 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 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 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive 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 convex 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 convex image-side surface S12. The seventh lens element E7 has negative power, and 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 optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
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/distance, and the focal length are all millimeters (mm).
TABLE 1
In embodiment 1, the value of the total effective focal length f of the optical imaging lens is 3.36mm, the value of the f-number Fno of the optical imaging lens is 2.27, the value of the on-axis distance TTL from the object side surface S1 to the imaging surface S17 of the first lens E1 is 7.89mm, the value of the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 5.35mm, and the value of the half semifov of the maximum angle of view-FOV is 61.42 °.
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 term coefficients A that can be used for the aspherical mirror surfaces S1 to S14 in example 14、A6、A8、A10、A12、A14、A16、A18And A20。
TABLE 2
Fig. 2A shows an on-axis chromatic aberration curve of the optical 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 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 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 2C, 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 4C. 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 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 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 has negative power, and has a concave 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 convex 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 convex image-side surface S12. The seventh lens element E7 has negative power, and 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 optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 2, the value of the total effective focal length f of the optical imaging lens is 3.36mm, the value of the f-number Fno of the optical imaging lens is 2.27, the value of the on-axis distance TTL from the object side surface S1 to the imaging surface S17 of the first lens E1 is 7.79mm, the value of the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 is 5.35mm, and the value of the half semifov of the maximum angle of view-FOV is 61.14 °.
Table 3 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 4 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 3
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 9.0884E-02 | -4.1240E-02 | 1.9418E-02 | -7.0077E-03 | 1.6270E-03 | -2.1107E-04 | 8.9365E-06 | 9.9243E-07 | -9.9011E-08 |
| S2 | 1.3097E-01 | -8.6771E-02 | 6.6846E-02 | -4.5656E-02 | 2.0058E-02 | -5.4370E-03 | 8.9507E-04 | -8.2909E-05 | 3.3322E-06 |
| S3 | 2.7927E-02 | -1.4556E-01 | 2.7262E-01 | -5.3682E-01 | 7.1816E-01 | -5.9036E-01 | 2.9431E-01 | -8.2112E-02 | 9.8259E-03 |
| S4 | 2.5777E-02 | -3.8371E-02 | -4.3207E-02 | -1.2382E-01 | 1.6470E+00 | -4.8631E+00 | 7.0859E+00 | -5.2372E+00 | 1.5855E+00 |
| S5 | -1.0233E-02 | 5.5022E-02 | -7.2259E-01 | 3.6078E+00 | -1.0580E+01 | 1.8556E+01 | -1.9000E+01 | 1.0304E+01 | -2.2137E+00 |
| S6 | -3.6314E-02 | -1.9646E-02 | 2.5905E-01 | -8.8085E-01 | 1.6367E+00 | -1.9165E+00 | 1.3918E+00 | -5.7203E-01 | 1.0118E-01 |
| S7 | -9.5861E-02 | 3.2807E-02 | 2.2572E-02 | -5.0955E-02 | 2.0860E-02 | 1.6038E-02 | -1.8828E-02 | 6.7786E-03 | -8.5364E-04 |
| S8 | -6.1951E-02 | -1.6116E-03 | 4.0166E-02 | -4.4052E-02 | 2.5353E-02 | -8.4661E-03 | 1.5684E-03 | -1.3468E-04 | 2.4600E-06 |
| S9 | 7.1194E-03 | -9.7819E-03 | 1.0832E-02 | -2.6763E-02 | 4.8580E-02 | -6.0302E-02 | 5.1470E-02 | -2.8855E-02 | 1.0279E-02 |
| S10 | -2.1678E-01 | -1.8220E-02 | 1.9732E-01 | -3.4727E-01 | 3.8702E-01 | -2.9885E-01 | 1.6259E-01 | -6.2049E-02 | 1.6256E-02 |
| S11 | -1.2979E-01 | 6.9373E-02 | -3.2151E-02 | 1.2296E-02 | -4.0808E-03 | 1.0812E-03 | -2.0712E-04 | 2.7146E-05 | -2.3490E-06 |
| S12 | 2.0382E-01 | -1.0980E-01 | 5.2402E-02 | -1.8255E-02 | 4.2633E-03 | -6.6096E-04 | 6.7399E-05 | -4.3495E-06 | 1.5794E-07 |
| S13 | -6.2422E-03 | -1.0482E-01 | 6.2872E-02 | -1.8170E-02 | 3.0231E-03 | -2.8751E-04 | 1.1459E-05 | 6.0001E-07 | -1.0681E-07 |
| S14 | -2.0716E-01 | 7.4219E-02 | -2.3676E-02 | 6.3921E-03 | -1.3188E-03 | 1.9582E-04 | -2.0447E-05 | 1.4795E-06 | -7.2404E-08 |
TABLE 4
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the convergent focus deviation 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 chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4C, 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 6C. 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 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 has negative power, and has a concave object-side surface S1 and a convex 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 convex 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 convex image-side surface S12. The seventh lens element E7 has negative power, and 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 optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 3, the value of the total effective focal length f of the optical imaging lens is 3.36mm, the value of the f-number Fno of the optical imaging lens is 2.27, the value of the on-axis distance TTL from the object side surface S1 to the imaging plane S17 of the first lens E1 is 7.78mm, the value of the half ImgH of the diagonal length of the effective pixel region on the imaging plane S17 is 5.20mm, and the value of the half Semi-FOV of the maximum angle of view is 59.90 °.
Table 5 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 6 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 5
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 8.6372E-02 | -3.6093E-02 | 1.4961E-02 | -4.4540E-03 | 6.9130E-04 | 3.0147E-06 | -2.0430E-05 | 3.1818E-06 | -1.6617E-07 |
| S2 | 1.2978E-01 | -8.8215E-02 | 6.8728E-02 | -4.6631E-02 | 2.0414E-02 | -5.5352E-03 | 9.1270E-04 | -8.4580E-05 | 3.3917E-06 |
| S3 | 3.1737E-02 | -1.4463E-01 | 2.7588E-01 | -5.5456E-01 | 7.6798E-01 | -6.6301E-01 | 3.4981E-01 | -1.0351E-01 | 1.3130E-02 |
| S4 | -4.4962E-03 | 3.6370E-01 | -2.6955E+00 | 1.0388E+01 | -2.4366E+01 | 3.5644E+01 | -3.1463E+01 | 1.5223E+01 | -3.0491E+00 |
| S5 | -9.6047E-03 | 1.5105E-02 | -3.0786E-01 | 1.5653E+00 | -5.0882E+00 | 1.0308E+01 | -1.2502E+01 | 8.2147E+00 | -2.2137E+00 |
| S6 | -3.7276E-02 | -3.1262E-02 | 3.4487E-01 | -1.1106E+00 | 1.9735E+00 | -2.2051E+00 | 1.5332E+00 | -6.0692E-01 | 1.0408E-01 |
| S7 | -9.7885E-02 | 3.6461E-02 | 3.2244E-02 | -8.3157E-02 | 6.4472E-02 | -1.6650E-02 | -4.6791E-03 | 3.4677E-03 | -5.3148E-04 |
| S8 | -5.9946E-02 | -1.0074E-02 | 5.6776E-02 | -6.2353E-02 | 3.7692E-02 | -1.3645E-02 | 2.8889E-03 | -3.2160E-04 | 1.3690E-05 |
| S9 | 1.4882E-02 | -5.5318E-02 | 1.5609E-01 | -3.1119E-01 | 4.0677E-01 | -3.6213E-01 | 2.2537E-01 | -9.7595E-02 | 2.8606E-02 |
| S10 | -2.1564E-01 | -3.8450E-02 | 2.6515E-01 | -4.6341E-01 | 5.1027E-01 | -3.8695E-01 | 2.0629E-01 | -7.7070E-02 | 1.9747E-02 |
| S11 | -1.3408E-01 | 7.8496E-02 | -4.0093E-02 | 1.6541E-02 | -5.6344E-03 | 1.4804E-03 | -2.7914E-04 | 3.6141E-05 | -3.1050E-06 |
| S12 | 2.0797E-01 | -1.1332E-01 | 5.5960E-02 | -2.0521E-02 | 5.1160E-03 | -8.6364E-04 | 9.9137E-05 | -7.6728E-06 | 3.8849E-07 |
| S13 | -4.1724E-03 | -1.0639E-01 | 6.2671E-02 | -1.7591E-02 | 2.7631E-03 | -2.2741E-04 | 3.0708E-06 | 1.3379E-06 | -1.4736E-07 |
| S14 | -2.0257E-01 | 6.9180E-02 | -2.0596E-02 | 5.2071E-03 | -1.0207E-03 | 1.4558E-04 | -1.4693E-05 | 1.0313E-06 | -4.9079E-08 |
TABLE 6
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the convergent focus deviation 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 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 6C, 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 8C. 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 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 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive 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 concave object-side surface S5 and a convex 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 convex image-side surface S12. The seventh lens element E7 has negative power, and 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 optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 4, the value of the total effective focal length f of the optical imaging lens is 3.28mm, the value of the f-number Fno of the optical imaging lens is 2.27, the value of the on-axis distance TTL from the object side surface S1 to the imaging plane S17 of the first lens E1 is 7.92mm, the value of the half ImgH of the diagonal length of the effective pixel region on the imaging plane S17 is 5.20mm, and the value of the half Semi-FOV of the maximum angle of view is 59.90 °.
Table 7 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 7
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 1.0521E-01 | -5.6632E-02 | 2.9023E-02 | -1.1450E-02 | 3.1589E-03 | -5.7535E-04 | 6.4768E-05 | -3.9627E-06 | 9.4255E-08 |
| S2 | 1.4383E-01 | -8.9592E-02 | 5.8359E-02 | -3.1269E-02 | 7.8940E-03 | 9.6932E-05 | -4.8617E-04 | 9.6438E-05 | -6.1767E-06 |
| S3 | 3.5226E-03 | -9.5720E-02 | 1.6281E-01 | -3.5546E-01 | 4.7354E-01 | -3.7592E-01 | 1.8948E-01 | -5.7029E-02 | 7.7138E-03 |
| S4 | 2.4223E-02 | -2.0544E-01 | 1.4971E+00 | -7.4736E+00 | 2.2722E+01 | -4.2254E+01 | 4.7332E+01 | -2.9322E+01 | 7.7502E+00 |
| S5 | -9.3230E-03 | -7.8966E-02 | 2.8332E-01 | -4.8775E-01 | -8.4198E-01 | 5.1283E+00 | -9.0389E+00 | 7.2290E+00 | -2.2137E+00 |
| S6 | -4.5082E-02 | -1.2113E-02 | 2.9790E-01 | -1.1383E+00 | 2.3325E+00 | -2.9412E+00 | 2.2475E+00 | -9.5383E-01 | 1.7215E-01 |
| S7 | -1.0472E-01 | 4.9898E-02 | 3.6349E-03 | -6.4775E-02 | 8.9566E-02 | -7.0338E-02 | 3.4332E-02 | -9.7520E-03 | 1.2307E-03 |
| S8 | -6.0125E-02 | -1.8639E-04 | 4.0688E-02 | -5.2734E-02 | 3.8088E-02 | -1.7180E-02 | 4.7798E-03 | -7.5178E-04 | 5.1121E-05 |
| S9 | 1.7611E-02 | -4.3735E-02 | 1.0037E-01 | -1.5501E-01 | 1.5774E-01 | -1.1101E-01 | 5.6207E-02 | -2.0550E-02 | 5.2778E-03 |
| S10 | -2.0543E-01 | -8.2628E-03 | 1.3305E-01 | -1.8890E-01 | 1.6598E-01 | -9.9652E-02 | 4.1552E-02 | -1.1942E-02 | 2.3127E-03 |
| S11 | -1.2543E-01 | 7.1535E-02 | -3.5472E-02 | 1.3327E-02 | -3.7824E-03 | 7.9215E-04 | -1.1903E-04 | 1.2497E-05 | -8.8793E-07 |
| S12 | 1.8215E-01 | -6.4644E-02 | 1.2716E-02 | 6.0578E-04 | -1.2392E-03 | 3.8892E-04 | -6.7433E-05 | 7.3634E-06 | -5.1822E-07 |
| S13 | -3.2450E-02 | -7.2866E-02 | 4.5996E-02 | -1.3852E-02 | 2.5343E-03 | -2.9445E-04 | 2.0324E-05 | -5.2354E-07 | -3.7214E-08 |
| S14 | -2.2280E-01 | 8.6236E-02 | -2.9353E-02 | 8.1264E-03 | -1.6859E-03 | 2.5087E-04 | -2.6276E-05 | 1.9089E-06 | -9.3837E-08 |
TABLE 8
Fig. 8A shows an on-axis chromatic aberration curve of the optical 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 an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8C, 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 10C. 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 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 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive 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 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 concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and 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 optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 5, the value of the total effective focal length f of the optical imaging lens is 3.28mm, the value of the f-number Fno of the optical imaging lens is 2.27, the value of the on-axis distance TTL from the object side surface S1 to the imaging plane S17 of the first lens E1 is 7.91mm, the value of the half ImgH of the diagonal length of the effective pixel region on the imaging plane S17 is 5.20mm, and the value of the half Semi-FOV of the maximum angle of view is 59.90 °.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 10 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 9
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 9.8098E-02 | -4.8821E-02 | 2.2141E-02 | -7.2268E-03 | 1.4997E-03 | -1.5882E-04 | -1.1153E-06 | 2.0529E-06 | -1.4603E-07 |
| S2 | 1.2524E-01 | -4.7381E-02 | -1.1844E-02 | 4.5367E-02 | -4.1520E-02 | 1.8843E-02 | -4.6145E-03 | 5.8577E-04 | -3.0363E-05 |
| S3 | -1.6254E-02 | -7.7185E-04 | -2.2692E-01 | 6.4946E-01 | -1.1170E+00 | 1.1610E+00 | -6.9258E-01 | 2.1892E-01 | -2.8527E-02 |
| S4 | 2.6231E-02 | -2.7033E-01 | 1.6257E+00 | -6.4316E+00 | 1.5890E+01 | -2.4572E+01 | 2.3318E+01 | -1.2392E+01 | 2.8306E+00 |
| S5 | -8.8248E-03 | 2.5829E-02 | -4.1084E-01 | 2.0583E+00 | -6.1208E+00 | 1.1282E+01 | -1.2724E+01 | 8.0790E+00 | -2.2137E+00 |
| S6 | -3.6824E-01 | 8.3609E-01 | -1.7574E+00 | 2.9038E+00 | -3.5847E+00 | 3.0766E+00 | -1.7028E+00 | 5.4006E-01 | -7.4036E-02 |
| S7 | -2.3068E-01 | 4.1141E-01 | -7.4795E-01 | 1.0296E+00 | -1.0150E+00 | 6.6942E-01 | -2.7571E-01 | 6.3483E-02 | -6.1996E-03 |
| S8 | -7.5139E-02 | -3.6691E-03 | 6.7055E-02 | -8.6998E-02 | 6.0094E-02 | -2.5183E-02 | 6.4698E-03 | -9.4808E-04 | 6.0996E-05 |
| S9 | 5.8644E-02 | -2.1696E-01 | 5.0783E-01 | -8.5685E-01 | 1.0138E+00 | -8.3644E-01 | 4.8418E-01 | -1.9612E-01 | 5.4488E-02 |
| S10 | -2.8108E-01 | 1.5542E-01 | 9.9457E-02 | -4.1494E-01 | 4.8512E-01 | -3.2051E-01 | 1.3524E-01 | -3.7576E-02 | 6.7960E-03 |
| S11 | -2.8023E-01 | 3.5674E-01 | -3.1695E-01 | 1.8595E-01 | -7.3593E-02 | 1.9576E-02 | -3.4194E-03 | 3.7077E-04 | -2.1355E-05 |
| S12 | 1.6673E-01 | -1.6479E-01 | 1.7740E-01 | -1.1054E-01 | 4.2647E-02 | -1.1071E-02 | 2.0195E-03 | -2.6157E-04 | 2.3608E-05 |
| S13 | -5.6204E-02 | -1.1413E-01 | 1.1981E-01 | -5.8096E-02 | 1.7240E-02 | -3.4055E-03 | 4.6269E-04 | -4.3497E-05 | 2.7825E-06 |
| S14 | -2.7043E-01 | 1.1544E-01 | -3.5368E-02 | 7.6528E-03 | -1.1916E-03 | 1.3631E-04 | -1.1599E-05 | 7.3167E-07 | -3.3288E-08 |
Fig. 10A shows an on-axis chromatic aberration curve of the optical 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 an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C 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 10C, 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 12C. 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 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 has negative power, and has a concave object-side surface S1 and a convex 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 convex 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 convex image-side surface S12. The seventh lens element E7 has negative power, and 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 optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 6, the value of the total effective focal length f of the optical imaging lens is 3.36mm, the value of the f-number Fno of the optical imaging lens is 2.27, the value of the on-axis distance TTL from the object side surface S1 to the imaging plane S17 of the first lens E1 is 7.75mm, the value of half ImgH of the diagonal length of the effective pixel region on the imaging plane S17 is 5.35mm, and the value of half Semi-FOV of the maximum angle of view is 61.22 °.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 12 shows high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 11
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 8.4580E-02 | -3.5316E-02 | 1.4493E-02 | -4.2956E-03 | 6.2022E-04 | 3.5751E-05 | -2.8690E-05 | 4.1895E-06 | -2.1404E-07 |
| S2 | 1.2460E-01 | -8.1425E-02 | 5.8396E-02 | -3.9494E-02 | 1.8206E-02 | -5.3021E-03 | 9.4402E-04 | -9.4296E-05 | 4.0526E-06 |
| S3 | 2.9491E-02 | -1.2544E-01 | 1.2104E-01 | -9.5245E-02 | 2.3247E-02 | 7.3294E-02 | -9.3571E-02 | 4.5597E-02 | -8.2642E-03 |
| S4 | 2.5953E-02 | 4.1325E-02 | -1.0293E+00 | 5.1755E+00 | -1.4510E+01 | 2.4854E+01 | -2.5517E+01 | 1.4367E+01 | -3.3768E+00 |
| S5 | 4.8946E-03 | -1.3786E-01 | 7.1231E-01 | -2.5550E+00 | 5.2387E+00 | -5.5518E+00 | 1.1360E+00 | 3.2034E+00 | -2.2137E+00 |
| S6 | -5.4789E-02 | 1.3926E-01 | -4.6914E-01 | 1.1819E+00 | -2.0408E+00 | 2.1843E+00 | -1.3738E+00 | 4.5605E-01 | -6.0095E-02 |
| S7 | -1.0731E-01 | 7.2026E-02 | -5.9691E-02 | 7.1730E-02 | -1.0891E-01 | 1.0937E-01 | -6.1360E-02 | 1.7739E-02 | -2.0623E-03 |
| S8 | -6.6617E-02 | -4.5573E-03 | 5.9328E-02 | -7.3179E-02 | 4.8701E-02 | -1.9498E-02 | 4.6427E-03 | -5.9793E-04 | 3.1121E-05 |
| S9 | 1.0723E-03 | 4.6174E-02 | -2.4273E-01 | 5.7437E-01 | -8.2308E-01 | 7.7186E-01 | -4.8750E-01 | 2.0936E-01 | -6.0468E-02 |
| S10 | -2.0623E-01 | -2.2291E-02 | 2.3841E-01 | -4.6680E-01 | 5.4237E-01 | -4.1455E-01 | 2.1583E-01 | -7.7198E-02 | 1.8736E-02 |
| S11 | -1.3527E-01 | 9.5977E-02 | -6.5203E-02 | 3.5965E-02 | -1.4926E-02 | 4.3746E-03 | -8.8019E-04 | 1.1983E-04 | -1.0810E-05 |
| S12 | 1.6309E-01 | -6.8073E-02 | 3.3699E-02 | -1.3702E-02 | 3.6341E-03 | -6.1487E-04 | 6.6335E-05 | -4.4397E-06 | 1.6780E-07 |
| S13 | -3.4281E-02 | -6.5720E-02 | 4.1313E-02 | -1.2169E-02 | 2.2504E-03 | -3.0717E-04 | 3.5381E-05 | -3.5033E-06 | 2.6714E-07 |
| S14 | -2.1212E-01 | 8.6806E-02 | -3.1920E-02 | 9.3373E-03 | -1.9927E-03 | 3.0053E-04 | -3.1726E-05 | 2.3204E-06 | -1.1491E-07 |
TABLE 12
Fig. 12A shows an on-axis chromatic aberration curve of the optical 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 meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C 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 plane after light passes through the lens. As can be seen from fig. 12A to 12C, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14C. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: 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 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex 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 convex image-side surface S12. The seventh lens element E7 has negative power, and 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 optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 7, the value of the total effective focal length f of the optical imaging lens is 3.36mm, the value of the f-number Fno of the optical imaging lens is 2.28, the value of the on-axis distance TTL from the object side surface S1 to the imaging plane S17 of the first lens E1 is 7.99mm, the value of half ImgH of the diagonal length of the effective pixel region on the imaging plane S17 is 5.33mm, and the value of half Semi-FOV of the maximum angle of view is 60.78 °.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 14 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Watch 13
| Flour mark | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | 9.1541E-02 | -5.3271E-02 | 6.2581E-02 | -8.7112E-02 | 9.6013E-02 | -7.6052E-02 | 4.3113E-02 | -1.7618E-02 | 5.1934E-03 |
| S2 | 1.1866E-01 | -4.1071E-02 | 6.2036E-02 | -2.4871E-01 | 6.6419E-01 | -1.1167E+00 | 1.2680E+00 | -1.0110E+00 | 5.7411E-01 |
| S3 | -1.1291E-02 | -2.6930E-02 | -7.4730E-02 | 4.6299E-01 | -1.3264E+00 | 2.0836E+00 | -1.4995E+00 | -5.3722E-01 | 2.3144E+00 |
| S4 | 6.6787E-03 | -3.3519E-01 | 3.5161E+00 | -2.6326E+01 | 1.3604E+02 | -4.9523E+02 | 1.2901E+03 | -2.4235E+03 | 3.2804E+03 |
| S5 | -1.1947E-02 | 9.0338E-02 | -8.9849E-01 | 4.0258E+00 | -1.0987E+01 | 1.8357E+01 | -1.8202E+01 | 9.6980E+00 | -2.1011E+00 |
| S6 | -4.8200E-02 | -1.4304E-01 | 1.5845E+00 | -7.8756E+00 | 2.3406E+01 | -4.5075E+01 | 5.7394E+01 | -4.7835E+01 | 2.4918E+01 |
| S7 | -1.0300E-01 | 6.0457E-02 | 3.0598E-02 | -4.0064E-01 | 1.0637E+00 | -1.6279E+00 | 1.6040E+00 | -1.0328E+00 | 4.2095E-01 |
| S8 | -6.9423E-02 | 3.2092E-02 | -2.2833E-02 | 2.0983E-02 | -2.0219E-02 | 1.6531E-02 | -1.0145E-02 | 4.3571E-03 | -1.2198E-03 |
| S9 | -3.1853E-02 | 6.9380E-02 | -1.7255E-01 | 3.2473E-01 | -4.2595E-01 | 3.8723E-01 | -2.4432E-01 | 1.0659E-01 | -3.1533E-02 |
| S10 | -3.0497E-01 | 1.0134E-01 | 1.3374E-01 | -4.5917E-01 | 6.9999E-01 | -6.9723E-01 | 4.9026E-01 | -2.4942E-01 | 9.2264E-02 |
| S11 | -1.8705E-01 | 1.5351E-01 | -1.0709E-01 | 6.0398E-02 | -2.6964E-02 | 9.0594E-03 | -2.2279E-03 | 3.9741E-04 | -5.1136E-05 |
| S12 | 2.3310E-01 | -1.8688E-01 | 1.5489E-01 | -8.9466E-02 | 3.4196E-02 | -8.9944E-03 | 1.6853E-03 | -2.2940E-04 | 2.2802E-05 |
| S13 | 8.8362E-03 | -1.7164E-01 | 1.4727E-01 | -7.0287E-02 | 2.2009E-02 | -4.7801E-03 | 7.4100E-04 | -8.3263E-05 | 6.8141E-06 |
| S14 | -2.4042E-01 | 8.9606E-02 | -2.4406E-02 | 4.5931E-03 | -5.7705E-04 | 4.4428E-05 | -1.2222E-06 | -1.5733E-07 | 2.4182E-08 |
TABLE 14
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a chromatic aberration of magnification curve of the optical 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 14C, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16C. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens, in order from an object side to an image side along an optical axis, comprises: 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 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive 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 convex 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 positive 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 concave object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and 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 optical imaging lens has an imaging surface S17, and light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
In embodiment 8, the value of the total effective focal length f of the optical imaging lens is 3.34mm, the value of the f-number Fno of the optical imaging lens is 2.27, the value of the on-axis distance TTL from the object side surface S1 to the imaging plane S17 of the first lens E1 is 7.96mm, the value of half ImgH of the diagonal length of the effective pixel region on the imaging plane S17 is 5.20mm, and the value of half Semi-FOV of the maximum angle of view is 59.90 °.
Table 15 shows a basic parameter table of the optical imaging lens of embodiment 8, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 16 shows high-order term coefficients that can be used for each aspherical mirror surface in example 8, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
TABLE 16
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a chromatic aberration of magnification curve of the optical 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 16C, the optical imaging lens according to embodiment 8 can achieve good imaging quality.
In summary, examples 1 to 8 each satisfy the relationship shown in table 17.
| Conditional expression (A) example | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| f×tan(Semi-FOV)(mm) | 6.17 | 6.09 | 5.80 | 5.66 | 5.66 | 6.11 | 6.01 | 5.77 |
| TTL/ImgH | 1.47 | 1.46 | 1.50 | 1.52 | 1.52 | 1.45 | 1.50 | 1.53 |
| |f7/R13| | 1.67 | 1.32 | 1.29 | 1.53 | 0.89 | 1.34 | 1.34 | 1.33 |
| (R7+R8)/R8 | 3.81 | 3.59 | 3.61 | 4.03 | 1.99 | 3.58 | 3.19 | 3.58 |
| |f/f6|+|f/f7| | 2.72 | 2.91 | 2.92 | 2.73 | 3.15 | 2.86 | 3.04 | 2.03 |
| (CT1+CT2+CT3)/T23 | 5.35 | 5.58 | 5.64 | 6.03 | 5.06 | 5.86 | 7.39 | 4.81 |
| R7/f | 2.84 | 2.49 | 2.50 | 3.48 | 0.97 | 2.41 | 2.02 | 2.44 |
| SAG11/SAG71 | -1.17 | -1.03 | -1.04 | -1.46 | -1.30 | -0.97 | -1.18 | -1.15 |
| ET3/SAG32 | -0.90 | -0.77 | -0.79 | -0.96 | -0.93 | -0.81 | -0.93 | -0.86 |
| f234/f | 1.21 | 1.61 | 1.68 | 1.26 | 1.09 | 1.79 | 1.34 | 1.29 |
| ET7(mm) | 1.24 | 1.24 | 1.20 | 1.13 | 1.24 | 1.22 | 1.16 | 1.05 |
TABLE 17
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 optical imaging lens described above.
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 (31)
1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens having a negative optical power;
a second lens having an optical power;
a third lens;
a fourth lens having a focal power, wherein the object-side surface of the fourth lens is convex, and the image-side surface of the fourth lens is concave;
a fifth lens having a refractive power, an object side surface of which is concave;
a sixth lens; and
a seventh lens;
wherein, the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfies that ImgH is more than or equal to 5.20 mm.
2. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and a half of the Semi-FOV of the maximum field angle of the optical imaging lens satisfy 5mm < f χ tan (Semi-FOV) < 7 mm.
3. The optical imaging lens of claim 1, wherein the maximum field angle FOV of the optical imaging lens satisfies 110 ° < FOV < 130 °.
4. The optical imaging lens of claim 1, wherein a distance TTL between an object side surface of the first lens element and the imaging surface on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface satisfy TTL/ImgH < 1.55.
5. The optical imaging lens of claim 1, characterized in that an effective focal length f7 of the seventh lens and a radius of curvature R13 of an object side surface of the seventh lens satisfy | f7/R13| < 1.7.
6. The optical imaging lens of claim 1, wherein a radius of curvature R7 of the object-side surface of the fourth lens and a radius of curvature R8 of the image-side surface of the fourth lens satisfy 1.5 < (R7+ R8)/R8 < 4.1.
7. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens, the effective focal length f6 of the sixth lens and the effective focal length f7 of the seventh lens satisfy 2.0 < | f/f6| + | f/f7| < 3.5.
8. The optical imaging lens according to claim 1, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a separation distance T23 of the second lens and the third lens on the optical axis satisfy 4.5 < (CT1+ CT2+ CT3)/T23 < 7.5.
9. The optical imaging lens of claim 1, wherein a radius of curvature R7 of the object side surface of the fourth lens and a total effective focal length f of the optical imaging lens satisfy 0.5 < R7/f < 3.5.
10. The optical imaging lens of claim 1, wherein an on-axis distance SAG11 between an intersection point of the object-side surface of the first lens and the optical axis to a vertex of an effective radius of the object-side surface of the first lens and an on-axis distance SAG71 between an intersection point of the object-side surface of the seventh lens and the optical axis to a vertex of an effective radius of the object-side surface of the seventh lens satisfies-2 < SAG11/SAG71 < 0.
11. The optical imaging lens of claim 1, wherein an on-axis distance SAG32 between an intersection point of the edge thickness ET3 of the third lens and the image side surface of the third lens and the optical axis and an effective radius vertex of the image side surface of the third lens satisfies-1.0 < ET3/SAG32 < -0.5.
12. The optical imaging lens of claim 1, wherein a combined focal length f234 of the second lens, the third lens and the fourth lens and a total effective focal length f of the optical imaging lens satisfy 1.0 < f234/f < 2.0.
13. The optical imaging lens of claim 1, wherein the edge thickness ET7 of the seventh lens satisfies 1.0mm < ET7 < 1.5 mm.
14. The optical imaging lens according to any one of claims 1 to 13, characterized in that the optical imaging lens further comprises a diaphragm disposed between the second lens and the third lens.
15. The optical imaging lens according to any one of claims 1 to 13, wherein the object side surface of the seventh lens element is convex and the image side surface of the seventh lens element is concave.
16. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens having a negative optical power;
a second lens having an optical power;
a third lens;
a fourth lens having a focal power, wherein the object-side surface of the fourth lens is convex, and the image-side surface of the fourth lens is concave;
a fifth lens having optical power;
a sixth lens; and
a seventh lens;
wherein a total effective focal length f of the optical imaging lens and a half Semi-FOV of a maximum field angle of the optical imaging lens satisfy 5mm < f × tan (Semi-FOV) < 7 mm.
17. The optical imaging lens of claim 16, wherein the maximum field angle FOV of the optical imaging lens satisfies 110 ° < FOV < 130 °.
18. The optical imaging lens of claim 17, wherein ImgH, which is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, satisfies ImgH ≥ 5.20 mm.
19. The optical imaging lens of claim 16, wherein a distance TTL between an object side surface of the first lens element and an imaging plane on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging plane satisfy TTL/ImgH < 1.55.
20. The optical imaging lens of claim 16, wherein an effective focal length f7 of the seventh lens and a radius of curvature R13 of an object side surface of the seventh lens satisfy | f7/R13| < 1.7.
21. The optical imaging lens of claim 16, wherein a radius of curvature R7 of the object-side surface of the fourth lens and a radius of curvature R8 of the image-side surface of the fourth lens satisfy 1.5 < (R7+ R8)/R8 < 4.1.
22. The optical imaging lens of claim 16, wherein the total effective focal length f of the optical imaging lens, the effective focal length f6 of the sixth lens and the effective focal length f7 of the seventh lens satisfy 2.0 < | f/f6| + | f/f7| < 3.5.
23. The optical imaging lens of claim 16, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, a center thickness CT3 of the third lens on the optical axis, and a separation distance T23 of the second lens and the third lens on the optical axis satisfy 4.5 < (CT1+ CT2+ CT3)/T23 < 7.5.
24. The optical imaging lens of claim 16, wherein a radius of curvature R7 of the object side surface of the fourth lens and a total effective focal length f of the optical imaging lens satisfy 0.5 < R7/f < 3.5.
25. The optical imaging lens of claim 16, wherein an on-axis distance SAG11 between an intersection point of the object-side surface of the first lens and the optical axis to a vertex of an effective radius of the object-side surface of the first lens and an on-axis distance SAG71 between an intersection point of the object-side surface of the seventh lens and the optical axis to a vertex of an effective radius of the object-side surface of the seventh lens satisfies-2 < SAG11/SAG71 < 0.
26. The optical imaging lens of claim 16, wherein an on-axis distance SAG32 between an intersection point of the edge thickness ET3 of the third lens and the image side surface of the third lens and the optical axis and an effective radius vertex of the image side surface of the third lens satisfies-1.0 < ET3/SAG32 < -0.5.
27. The optical imaging lens of claim 16, wherein a combined focal length f234 of the second lens, the third lens and the fourth lens and a total effective focal length f of the optical imaging lens satisfy 1.0 < f234/f < 2.0.
28. The optical imaging lens of claim 16, wherein the edge thickness ET7 of the seventh lens satisfies 1.0mm < ET7 < 1.5 mm.
29. The optical imaging lens according to any one of claims 16 to 27, characterized in that the optical imaging lens further comprises an optical stop disposed between the second lens and the third lens.
30. The optical imaging lens of any one of claims 16 to 27, wherein the object side surface of the fifth lens is concave.
31. The optical imaging lens according to any one of claims 16 to 27, wherein the object side surface of the seventh lens element is convex and the image side surface of the seventh lens element is concave.
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