Optical imaging lens

Abstract

The application discloses an optical imaging lens, which comprises, in sequence from the object side to the image side along the optical axis, a first lens with positive refractive power, the object side surface of which is a convex surface, and the image side surface of which is a convex surface; a second lens with negative refractive power; a third lens with positive refractive power; a fourth lens with positive refractive power, the object side surface of which is a concave surface, and the image side surface of which is a convex surface; and a fifth lens with negative refractive power, the object side surface of which is a convex surface, and the image side surface of which is a concave surface. The curvature radius R2 of the image side surface of the first lens and the curvature radius R10 of the image side surface of the fifth lens satisfy the condition: -14.0 < R2 / R10 < -10.0.

Description

Technical Field

[0001] This application relates to the field of optical components, and more specifically, to an optical imaging lens. Background Technology

[0002] With the continuous advancement of technology driving the constant upgrading of mobile phones, full-screen displays are the inevitable trend in smartphone development. They offer users a more immersive visual experience with their extremely high screen-to-body ratio, while effectively controlling the increase in phone size. However, since components like the front-facing camera, earpiece, and various sensors are essential modules in modern smartphones, occupying a portion of the front panel, the screen-to-body ratio of current full-screen phones remains relatively low. Therefore, how to obtain lenses with ultra-small heads, significantly reducing the opening at the front of the lens, is beneficial for under-display camera configurations, thereby further improving the screen-to-body ratio of full-screen phones, is one of the technical problems that those skilled in the art are dedicated to solving. Summary of the Invention

[0003] This application provides an optical imaging lens, which, along the optical axis from the object side to the image side, may sequentially include: a first lens with positive optical power, whose object side and image side are convex; a second lens with negative optical power; a third lens with positive optical power; a fourth lens with positive optical power, whose object side is concave and image side is convex; and a fifth lens with negative optical power, whose object side is convex and image side is concave. The radius of curvature R2 of the image side of the first lens and the radius of curvature R10 of the image side of the fifth lens can satisfy: -14.0. <R2 / R10<-10.0。

[0004] In one embodiment, the maximum field of view (FOV) of the optical imaging lens can satisfy: FOV > 84°.

[0005] In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy: f / EPD<2.2.

[0006] In one embodiment, the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, and the center thickness CT1 of the first lens on the optical axis can satisfy: -13.8 < (R1 + R2) / CT1 < -8.7.

[0007] In one embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens can satisfy: 4.5 <f3 / f4<9.0。

[0008] In one embodiment, the center thickness CT5 of the fifth lens on the optical axis and the spacing T45 between the fourth and fifth lenses on the optical axis can satisfy: 14.0. <CT5 / T45<20.5。

[0009] In one embodiment, the effective focal length f5 of the fifth lens and the center thickness CT5 of the fifth lens on the optical axis can satisfy: -4.5 <f5 / CT5<-2.5。

[0010] In one embodiment, the effective focal length f5 of the fifth lens and the distance T45 between the fourth and fifth lenses on the optical axis can satisfy: -60.0. <f5 / T45<-55.5。

[0011] In one embodiment, the effective focal length f5 of the fifth lens, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT2 of the second lens on the optical axis can satisfy: -3.6 < (f5 + CT4) / CT2 < -2.4.

[0012] In one embodiment, the effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the radius of curvature R8 of the image side surface of the fourth lens can satisfy: -7.9 < (f1 + f4) / R8 < -6.4.

[0013] In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f4 of the fourth lens can satisfy: -3.0mm <f1×f2 / (f1+f4)<-2.5mm。

[0014] In one embodiment, the sum of the radius of curvature R4 of the image side of the second lens, the radius of curvature R5 of the object side of the third lens, and the center thickness ∑CT of the first lens to the fifth lens on the optical axis can satisfy: 2.5 < (R4 + R5) / ∑CT < 3.5.

[0015] In one embodiment, the center thickness CT3 of the third lens on the optical axis, the center thickness CT5 of the fifth lens on the optical axis, and the spacing T45 between the fourth and fifth lenses on the optical axis can satisfy: 37.6 < (CT3 + CT5) / T45 < 43.5.

[0016] In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens along the optical axis and half the diagonal length ImgH of the effective pixel area on the imaging surface can satisfy: TTL / ImgH<1.6.

[0017] In one embodiment, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens along the optical axis, half the diagonal length ImgH of the effective pixel area on the imaging surface, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens can satisfy: TTL×ImgH / (f1×f2)<-0.8.

[0018] In one embodiment, the radius of curvature R8 of the image-side surface of the fourth lens and the distance T23 between the second and third lenses on the optical axis can satisfy: -3.8. <R8 / T23<-2.7。

[0019] In one embodiment, the radius of curvature R8 of the image-side surface of the fourth lens and the sum of the distances ∑AT between any two adjacent lenses with optical power among the first to fifth lenses on the optical axis can satisfy: -1.0 <R8 / ∑AT<-0.85。

[0020] This application employs a five-element lens architecture. By setting the image-side surface of the first lens to be convex, the system's field of view (FOV) is improved, allowing light to converge better and enhancing image quality. The combination of a second lens with negative optical power and a third lens with positive optical power helps correct spherical and coma aberrations. The fourth lens, with positive optical power, is relatively curved, which helps correct astigmatism, distortion, and chromatic aberration. The fifth lens, with negative optical power, not only ensures that light rays at the edge of the field of view do not diverge excessively, giving the system better coma correction capabilities, but also maintains the height of the image plane. Furthermore, the embodiments of this application, through the reasonable configuration of lens curvature radii, can effectively eliminate spherical aberration in optical imaging lenses, obtaining high-definition images. Attached Figure Description

[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown;

[0023] Figures 2A to 2D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 1 are shown respectively.

[0024] Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown;

[0025] Figures 4A to 4D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 2 are shown respectively.

[0026] Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown;

[0027] Figures 6A to 6D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 3 are shown respectively.

[0028] Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown;

[0029] Figures 8A to 8D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 4 are shown respectively.

[0030] Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown;

[0031] Figures 10A to 10D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 5 are shown respectively.

[0032] Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown; and

[0033] Figures 12A to 12D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens of Example 6 are shown respectively. Detailed Implementation

[0034] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0035] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0036] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0037] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity 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 location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. In this article, the surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0038] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0039] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense, unless expressly so specified herein.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] The features, principles and other aspects of this application are described in detail below.

[0042] An optical imaging lens according to an exemplary embodiment of this application may include, for example, five lenses: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. These five lenses are arranged sequentially along the optical axis from the object side to the image side.

[0043] In an exemplary embodiment, the first lens may have a positive optical power; the second lens may have a negative optical power; the third lens may have a positive optical power; the fourth lens may have a positive optical power; the fifth lens may have a negative optical power. The combination of the second lens with a negative optical power and the third lens with a positive optical power is beneficial to correcting the spherical aberration and coma of the system; the fourth lens with a positive optical power is relatively curved as a whole, which is beneficial to correcting the astigmatism, distortion and lateral chromatic aberration of the system; the fifth lens with a negative optical power can not only ensure that the light rays in the marginal field of view do not diverge too much, so that the system has better coma correction ability, but also ensure the height of the image plane.

[0044] In an exemplary embodiment, the object side surface of the first lens may be convex, and the image side surface may be convex. Setting the image side surface of the first lens to be convex can improve the FOV of the system while enabling better convergence of light rays and improving the image quality of the system.

[0045] In an exemplary embodiment, the object side surface of the fourth lens may be concave, and the image side surface may be convex.

[0046] In an exemplary embodiment, the object side surface of the fifth lens may be convex, and the image side surface may be concave.

[0047] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula -14.0 < R2 / R10 < -10.0, where R2 is the radius of curvature of the image side surface of the first lens, and R10 is the radius of curvature of the image side surface of the fifth lens. By controlling the ratio of the radius of curvature of the image side surface of the first lens to the radius of curvature of the image side surface of the fifth lens within this range, the spherical aberration of the optical imaging lens can be effectively eliminated, and a high-definition image can be obtained. More specifically, R2 and R10 may satisfy: -13.7 < R2 / R10 < -10.2.

[0048] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional formula FOV > 84°, where FOV is the maximum field of view angle of the optical imaging lens. By controlling the value of the maximum field of view angle of the optical imaging lens within this range, it is beneficial to obtain a larger field of view range and improve the ability of the optical imaging lens to collect object-side information. More specifically, FOV may satisfy: 84° < FOV < 91°.

[0049] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula f / EPD < 2.2, where f is the effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. By controlling the ratio of the effective focal length of the optical imaging lens to the entrance pupil diameter of the optical imaging lens within this range, the F-number of the imaging system with a large image surface is small, which can ensure that the system has a large-aperture imaging effect and good imaging quality in a dark environment. More specifically, f and EPD can satisfy: 2.0 < f / EPD < 2.2. Exemplarily, f can satisfy 2.3 mm < f < 2.6 mm.

[0050] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -13.8 < (R1 + R2) / CT1 < -8.7, where R1 is the curvature radius of the object side surface of the first lens, R2 is the curvature radius of the image side surface of the first lens, and CT1 is the central thickness of the first lens on the optical axis. By controlling the ratio of the sum of the curvature radius of the object side surface of the first lens and the curvature radius of the image side surface of the first lens to the central thickness of the first lens on the optical axis within this range, it is beneficial to effectively control the surface shape of the first lens lens, so that the first lens has better processing and forming processability.

[0051] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 4.5 < f3 / f4 < 9.0, where f3 is the effective focal length of the third lens and f4 is the 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 within this range, the optical power of the system can be reasonably distributed, so that the beam deflection is not large, ensuring the imaging quality and processability of the optical imaging lens. More specifically, f3 and f4 can satisfy: 4.7 < f3 / f4 < 8.9. Exemplarily, f3 can satisfy 5.5 mm < f3 < 10.2 mm, and f4 can satisfy 1.1 mm < f4 < 1.2 mm.

[0052] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 14.0 < CT5 / T45 < 20.5, where CT5 is the central thickness of the fifth lens on the optical axis and T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis. By controlling the ratio of the central thickness of the fifth lens on the optical axis to the spacing distance between the fourth lens and the fifth lens on the optical axis within this range, the lens can be easily injection-molded, improving the processability of the optical imaging lens while ensuring good imaging quality.

[0053] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -4.5 < f5 / CT5 < -2.5, where f5 is the effective focal length of the fifth lens, and CT5 is the central thickness of the fifth lens on the optical axis. By controlling the ratio of the effective focal length of the fifth lens to the central thickness of the fifth lens on the optical axis within this range, the processability of the fifth lens and lower sensitivity can be ensured. More specifically, f5 and CT5 can satisfy: -4.3 < f5 / CT5 < -2.7. Exemplarily, f5 can satisfy -1.3 mm < f5 < -1.1 mm.

[0054] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -60.0 < f5 / T45 < -55.5, where f5 is the effective focal length of the fifth lens, and T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis. By controlling the ratio of the effective focal length of the fifth lens to the spacing distance between the fourth lens and the fifth lens on the optical axis within this range, the optical power of the system can be reasonably distributed, so that the negative spherical aberration generated by the fourth lens is offset by the positive spherical aberration generated by the fifth lens, thereby improving the imaging quality. Exemplarily, f5 can satisfy -1.3 mm < f5 < -1.1 mm.

[0055] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -3.6 < (f5 + CT4) / CT2 < -2.4, where f5 is the effective focal length of the fifth lens, CT4 is the central thickness of the fourth lens on the optical axis, and CT2 is the central thickness of the second lens on the optical axis. By controlling the ratio of the sum of the effective focal length of the fifth lens and the central thickness of the fourth lens to the central thickness of the second lens on the optical axis within this range, it is beneficial to better correct chromatic aberration and improve the imaging quality; at the same time, it is beneficial to avoid the problem of excessive concentration of optical power and increased system tolerance sensitivity caused by the lens being too thick or too thin.

[0056] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -7.9 < (f1 + f4) / R8 < -6.4, where f1 is the effective focal length of the first lens, f4 is the effective focal length of the fourth lens, and R8 is the curvature radius of the image side of the fourth lens. By controlling the ratio of the sum of the effective focal length of the first lens and the effective focal length of the fourth lens to the curvature radius of the image side of the fourth lens within this range, on the one hand, the optical sensitivity of the fourth lens can be effectively reduced, which is more conducive to mass production, and on the other hand, the optical power of the first and fourth lenses can be reasonably distributed, ensuring better imaging quality. Exemplarily, f1 can satisfy 2.6 mm < f1 < 2.8 mm, and f4 can satisfy 1.1 mm < f4 < 1.2 mm.

[0057] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -3.0 mm < f1 × f2 / (f1 + f4) < -2.5 mm, where f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f4 is the effective focal length of the fourth lens. By controlling the effective focal lengths of the first lens, the second lens, and the fourth lens to satisfy -3.0 mm < f1 × f2 / (f1 + f4) < -2.5 mm, the system can have good imaging quality and effectively reduce the sensitivity of the system. More specifically, f1, f2, and f4 can satisfy -2.8 mm < f1 × f2 / (f1 + f4) < -2.5 mm. Exemplarily, f1 can satisfy 2.6 mm < f1 < 2.8 mm, f2 can satisfy -3.9 mm < f2 < -3.5 mm, and f4 can satisfy 1.1 mm < f4 < 1.2 mm.

[0058] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 2.5 < (R4 + R5) / ∑CT < 3.5, where R4 is the radius of curvature of the image side of the second lens, R5 is the radius of curvature of the object side of the third lens, and ∑CT is the sum of the central thicknesses of the first lens to the fifth lens on the optical axis. By controlling the ratio of the sum of the radius of curvature of the image side of the second lens and the radius of curvature of the object side of the third lens to the sum of the central thicknesses of the first lens to the fifth lens on the optical axis within this range, and reasonably controlling the bending degrees of the image side of the second lens and the object side of the third lens, it is beneficial to eliminate the coma and spherical aberration of the lens and ensure the processability of the lens. More specifically, R4, R5, and ∑CT can satisfy 2.6 < (R4 + R5) / ∑CT < 3.4.

[0059] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula 37.6 < (CT3 + CT5) / T45 < 43.5, where CT3 is the central thickness of the third lens on the optical axis, CT5 is the central thickness of the fifth lens on the optical axis, and T45 is the interval distance between the fourth lens and the fifth lens on the optical axis. By controlling the ratio of the sum of the central thickness of the third lens on the optical axis and the central thickness of the fifth lens on the optical axis to the interval distance between the fourth lens and the fifth lens on the optical axis within this range, the thickness sensitivity of the lens can be effectively reduced and its miniaturization requirements can be met.

[0060] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula TTL / ImgH < 1.6, where TTL is the distance along the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface. By controlling the ratio of the distance along the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens to half of the diagonal length of the effective pixel area on the imaging surface within this range, the characteristics of ultra-thinness and high pixels of the optical imaging lens can be achieved. Exemplarily, TTL can satisfy 3.4 mm < TTL < 3.8 mm, and ImgH can satisfy 2.3 mm < ImgH < 2.5 mm.

[0061] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula TTL×ImgH / (f1×f2) < -0.8, where TTL is the distance along the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, ImgH is half of the diagonal length of the effective pixel area on the imaging surface, f1 is the effective focal length of the first lens, and f2 is the effective focal length of the second lens. By controlling the distance along the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens, half of the diagonal length of the effective pixel area on the imaging surface, the effective focal length of the first lens, and the effective focal length of the second lens to satisfy TTL×ImgH / (f1×f2) < -0.8, on the one hand, the imaging quality can be guaranteed, and on the other hand, the characteristics of ultra-thinness and high pixels of the optical imaging lens can be achieved. Exemplarily, TTL can satisfy 3.4 mm < TTL < 3.8 mm, ImgH can satisfy 2.3 mm < ImgH < 2.5 mm, f1 can satisfy 2.6 mm < f1 < 2.8 mm, and f2 can satisfy -3.9 mm < f2 < -3.5 mm.

[0062] In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional formula -3.8 < R8 / T23 < -2.7, where R8 is the radius of curvature of the image side surface of the fourth lens, and T23 is the distance between the second lens and the third lens on the optical axis. By controlling the ratio of the radius of curvature of the image side surface of the fourth lens to the distance between the second lens and the third lens on the optical axis within this range, the gap sensitivity of the lens can be effectively reduced, and the field curvature of the lens can be corrected.

[0063] In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition -1.0 < R8 / ∑AT < -0.85, where R8 is the radius of curvature of the image side surface of the fourth lens, and ∑AT is the sum of the axial distances between any two adjacent lenses with optical power among the first lens to the fifth lens. By controlling the ratio of the radius of curvature of the image side surface of the fourth lens to the sum of the axial distances between any two adjacent lenses with optical power among the first lens to the fifth lens within this range, the sensitivity of the lens can be effectively reduced, and the processability of the lens can be ensured.

[0064] In an exemplary embodiment, the optical imaging lens of the present application may include at least one aperture stop. The aperture stop can restrict the optical path and control the light intensity. The aperture stop can be set at an appropriate position of the optical imaging lens. For example, the aperture stop can be located between the object side and the first lens.

[0065] In an exemplary embodiment, optionally, the above optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0066] In an exemplary embodiment, the effective focal length f of the optical imaging lens may be, for example, in the range of 2.3 mm to 2.6 mm, the effective focal length f1 of the first lens may be, for example, in the range of 2.6 mm to 2.8 mm, the effective focal length f2 of the second lens may be, for example, in the range of -3.9 mm to -3.5 mm, the effective focal length f3 of the third lens may be, for example, in the range of 5.5 mm to 10.2 mm, the effective focal length f4 of the fourth lens may be, for example, in the range of 1.1 mm to 1.2 mm, and the effective focal length f5 of the fifth lens may be, for example, in the range of -1.3 mm to -1.1 mm.

[0067] The optical imaging lens according to the above embodiment of the present application may employ multiple lenses, such as the five lenses described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and the axial spacing between each lens, etc., a lens with an ultra-small head can be provided, which can greatly reduce the front aperture of the lens, is beneficial for the under-screen configuration of mobile phones, and is beneficial for further increasing the screen ratio of electronic devices such as mobile phones.

[0068] In embodiments of this application, at least one of the mirror surfaces of the first lens, second lens, third lens, fourth lens, and fifth lens may be an aspherical mirror surface; that is, at least one aspherical mirror surface may be included from the object-side surface of the first lens to the image-side surface of the fifth lens. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better radius of curvature characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, at least one of the object-side and image-side surfaces of each of the first, second, third, fourth, and fifth lenses may be an aspherical mirror surface. Optionally, both the object-side and image-side surfaces of each of the first, second, third, fourth, and fifth lenses may be aspherical mirror surfaces.

[0069] However, those skilled in the art will understand that the number of lenses constituting the optical imaging lens can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although five lenses are described as an example in the embodiments, the optical imaging lens is not limited to including five lenses. If desired, the optical imaging lens may also include other numbers of lenses.

[0070] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the optical imaging lens applicable to the above-described embodiments.

[0071] Example 1

[0072] The following is for reference Figures 1 to 2D Describes an optical imaging lens according to Embodiment 1 of this application. Figure 1 A schematic diagram of the structure of an optical imaging lens according to Embodiment 1 of this application is shown.

[0073] like Figure 1 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, and filter E6.

[0074] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. The optical imaging lens has an imaging surface S13, and light from the object passes sequentially through each surface S1 to S12 and is finally imaged on the imaging surface S13.

[0075] Table 1 shows the basic parameters of the optical imaging lens of Example 1, where the units for radius of curvature and thickness / distance are millimeters (mm).

[0076]

[0077] Table 1

[0078] In Embodiment 1, the object-side surface and image-side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0079]

[0080] Where x is the distance vector from the vertex of the aspherical surface at a height of h along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the i-th order correction coefficient of the aspherical surface. Tables 2-1 and 2-2 below give the higher-order coefficients A4, A6, A8, A10 that can be used for each aspherical mirror S1 to S10 in Example 1. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 .

[0081] Face number A4 A6 A8 A10 A12 A14 A16 S1 -7.5753E-03 -2.6854E-03 -4.1482E-04 -5.9585E-05 -2.4858E-05 -5.2866E-06 -2.3137E-06 S2 -1.4782E-02 -1.3827E-03 -3.0248E-05 2.8481E-04 -1.5306E-05 2.6023E-05 1.6022E-05 S3 -2.9238E-02 4.7423E-04 -6.2225E-04 3.4653E-04 -1.3933E-04 1.7165E-05 -6.5492E-07 S4 -9.5408E-03 -3.4942E-03 -6.0331E-04 6.3349E-04 3.6166E-05 8.7140E-05 1.3718E-05 S5 -1.1508E-01 -1.8186E-03 1.5356E-03 2.9004E-03 1.0041E-03 2.6018E-04 -1.3337E-04 S6 -1.7048E-01 -6.3158E-03 4.5018E-03 5.0104E-03 1.8822E-03 8.7855E-04 1.4724E-04 S7 -7.7067E-02 -1.3999E-02 -6.0837E-03 3.9285E-03 -1.8996E-03 4.7284E-05 -9.1890E-04 S8 1.2626E-01 5.5499E-02 -3.7037E-02 -5.2100E-03 3.0392E-03 1.5626E-03 -1.9748E-03 S9 -4.7370E-01 1.0647E-01 -2.9266E-02 -2.0857E-02 2.2120E-02 -8.2148E-03 1.2123E-03 S10 -9.7336E-01 4.8457E-02 -2.7009E-02 -1.1858E-02 5.9514E-03 2.8339E-03 5.9505E-03

[0082] Table 2-1

[0083] Face number A18 A20 A22 A24 A26 A28 A30 S1 -1.6523E-07 -1.3088E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 5.9026E-06 7.7647E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 1.9833E-06 1.4393E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 3.2965E-06 -1.7362E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -8.2406E-05 -5.6243E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 2.2680E-05 -2.5442E-05 -2.6732E-05 1.0801E-06 -3.2836E-06 0.0000E+00 0.0000E+00 S7 -1.2921E-04 -3.1586E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 1.3965E-04 3.5496E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -2.2853E-04 -3.6023E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 1.6115E-03 9.4297E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0084] Table 2-2

[0085] Figure 2A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 2B The astigmatism curve of the optical imaging lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2C The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 2D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 2A to 2D It can be seen that the optical imaging lens given in Example 1 can achieve good imaging quality.

[0086] Example 2

[0087] The following is for reference Figures 3 to 4D This paper describes an optical imaging lens according to Embodiment 2 of this application. For the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted in this embodiment and the following embodiments. Figure 3 A schematic diagram of the structure of an optical imaging lens according to Embodiment 2 of this application is shown.

[0088] like Figure 3 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, and filter E6.

[0089] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. The optical imaging lens has an imaging surface S13, and light from the object passes sequentially through each surface S1 to S12 and is finally imaged on the imaging surface S13.

[0090] Table 3 shows the basic parameters of the optical imaging lens of Example 2, where the units for radius of curvature and thickness / distance are millimeters (mm). Tables 4-1 and 4-2 show the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1 to S10 in Example 2. 10 A 12 A 14 A 16 A18 A 20 A 22 A 24 A 26 A 28 and A 30 Each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0091]

[0092]

[0093] Table 3

[0094] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.7126E-03 -2.3127E-03 -3.0576E-04 -6.2994E-06 -1.8996E-05 -6.2229E-06 -9.4396E-06 S2 -1.3529E-02 -3.6663E-04 -8.5603E-05 7.3846E-05 1.8797E-06 -4.7218E-06 5.0803E-06 S3 -2.1674E-02 8.4586E-04 -3.0383E-05 1.4522E-04 -1.6958E-05 -8.3065E-07 6.4310E-07 S4 -9.6397E-03 -2.9845E-03 1.1337E-03 6.5618E-04 -2.1162E-04 -2.2514E-04 -1.6056E-04 S5 -9.6929E-02 -1.5747E-03 6.2529E-04 1.6322E-03 6.3926E-04 1.1351E-04 -4.3680E-05 S6 -1.7162E-01 -4.2833E-03 5.6495E-03 4.3358E-03 1.5001E-03 5.2937E-04 3.8732E-05 S7 -7.2095E-02 -7.8977E-03 -1.1233E-02 -3.2276E-04 -5.0631E-03 -1.0729E-03 -1.6831E-03 S8 2.0604E-01 3.8741E-02 -4.0816E-02 2.8557E-03 1.3854E-03 1.8583E-04 -2.1058E-03 S9 -6.1900E-01 4.7059E-02 3.0271E-02 -5.3593E-02 2.0987E-02 -1.0814E-02 1.0215E-02 S10 -9.2885E-01 -6.3820E-02 -1.3456E-02 -1.7807E-02 1.0806E-02 -1.6096E-03 6.7364E-03

[0095] Table 4-1

[0096] Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.9214E-06 -2.9286E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -2.1937E-06 3.1963E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 -4.6462E-07 -2.0689E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 -6.8850E-05 -1.8935E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -4.1415E-05 -1.8192E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 4.2065E-06 -2.3128E-05 -2.2408E-06 5.8171E-09 1.5116E-09 0.0000E+00 0.0000E+00 S7 -7.8601E-05 -1.7373E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 8.8609E-04 -8.8743E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -7.5017E-04 2.3175E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 8.8862E-04 1.5478E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0097] Table 4-2

[0098] Figure 4A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 4B The astigmatism curve of the optical imaging lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 4D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 4A to 4D It can be seen that the optical imaging lens given in Example 2 can achieve good imaging quality.

[0099] Example 3

[0100] The following is for reference Figures 5 to 6D An optical imaging lens according to Embodiment 3 of this application is described. Figure 5 A schematic diagram of the structure of an optical imaging lens according to Embodiment 3 of this application is shown.

[0101] like Figure 5 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, and filter E6.

[0102] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. The optical imaging lens has an imaging surface S13, and light from the object passes sequentially through each surface S1 to S12 and is finally imaged on the imaging surface S13.

[0103] Table 5 shows the basic parameters of the optical imaging lens of Example 3, where the units for radius of curvature and thickness / distance are millimeters (mm). Tables 6-1 and 6-2 show the higher-order coefficients A4, A6, A8, and A6 that can be used for the aspherical mirrors S1 to S10 in Example 3. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 Each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0104]

[0105] Table 5

[0106] Face number A4 A6 A8 A10 A12 A14 A16 S1 -5.5656E-03 -2.2710E-03 -3.2416E-04 -4.4052E-05 -1.6897E-05 -7.2654E-06 -4.3112E-06 S2 -2.0691E-02 -1.1257E-04 -6.6281E-05 4.2367E-04 -5.5852E-05 4.6523E-05 3.3195E-06 S3 -3.7838E-02 3.9365E-04 -4.8346E-04 4.3556E-04 -2.1522E-04 1.4884E-05 -1.5860E-05 S4 -9.2672E-03 -2.3345E-03 1.0448E-04 9.7913E-04 2.8780E-05 7.9782E-05 -4.2515E-06 S5 -1.0009E-01 -3.3878E-04 1.7649E-03 2.6447E-03 9.2839E-04 1.9236E-04 -9.8231E-05 S6 -1.6210E-01 -6.2199E-03 3.4377E-03 3.1926E-03 9.9815E-04 4.1214E-04 2.1068E-05 S7 -6.3754E-02 -2.4434E-03 -5.5761E-03 1.6105E-03 -2.8755E-03 -1.6178E-04 -6.4864E-04 S8 5.6068E-02 6.3133E-02 -1.4834E-02 -3.2227E-03 -2.4740E-03 1.9664E-03 -1.2286E-04 S9 -4.6965E-01 2.8923E-02 3.5965E-02 -2.4155E-02 1.1663E-02 -3.6456E-03 1.6668E-03 S10 -9.1881E-01 -2.1095E-02 -1.9388E-02 -9.9574E-03 4.2991E-03 -1.7172E-03 2.6318E-03

[0107] Table 6-1

[0108]

[0109]

[0110] Table 6-2

[0111] Figure 6A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 6B The astigmatism curve of the optical imaging lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6C The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 6DThe magnification chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 6A to 6D It can be seen that the optical imaging lens given in Example 3 can achieve good imaging quality.

[0112] Example 4

[0113] The following is for reference Figures 7 to 8D An optical imaging lens according to Embodiment 4 of this application is described. Figure 7 A schematic diagram of the structure of an optical imaging lens according to Embodiment 4 of this application is shown.

[0114] like Figure 7 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, and filter E6.

[0115] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. The optical imaging lens has an imaging surface S13, on which light from the object sequentially passes through surfaces S1 to S12 and is finally imaged.

[0116] Table 7 shows the basic parameters of the optical imaging lens of Example 4, where the units for radius of curvature and thickness / distance are millimeters (mm). Tables 8-1 and 8-2 show the higher-order coefficients A4, A6, A8, and A6 that can be used for the aspherical mirrors S1 to S10 in Example 4. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 Each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0117]

[0118]

[0119] Table 7

[0120] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.2531E-02 -4.1109E-03 -5.4918E-04 -7.3281E-05 -1.3129E-05 -1.6125E-06 -2.2674E-06 S2 -4.7249E-02 -3.3687E-03 2.1352E-05 1.0637E-04 1.6260E-05 1.3043E-06 3.4306E-06 S3 -4.9799E-02 1.4426E-03 1.7135E-04 2.9308E-04 -4.6878E-05 -1.1031E-05 -6.8366E-06 S4 -1.5109E-02 7.6738E-04 4.7287E-04 1.0103E-03 3.1335E-05 2.1344E-05 -1.8895E-05 S5 -1.2590E-01 -7.7556E-03 8.7509E-04 2.9195E-03 1.0218E-03 2.5992E-04 -7.4314E-05 S6 -2.1444E-01 -3.4859E-02 -5.9633E-03 2.2860E-03 -7.7227E-04 -1.3539E-04 -2.3036E-04 S7 -6.4676E-02 5.7042E-03 -1.5221E-02 4.3026E-03 -4.7967E-03 -5.8812E-04 -6.7301E-04 S8 -1.4844E-03 8.3156E-02 -1.6002E-02 9.8103E-04 -2.0065E-03 1.5965E-03 2.0093E-05 S9 -4.8899E-01 -3.3348E-02 4.1589E-02 -6.7749E-03 7.8937E-03 -8.2361E-04 1.0299E-04 S10 -8.6660E-01 -3.4627E-02 -1.2371E-02 -7.1134E-03 8.2370E-03 -1.1112E-03 2.5769E-03

[0121] Table 8-1

[0122] Face number A18 A20 A22 A24 A26 A28 A30 S1 6.3570E-08 -7.6897E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -4.3169E-07 1.0386E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 2.3937E-06 -8.8577E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 2.6376E-06 -3.6773E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -3.2384E-05 -1.4934E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 -8.6796E-06 -1.2749E-05 6.2584E-07 1.5780E-07 -4.8069E-06 0.0000E+00 0.0000E+00 S7 1.3405E-04 1.5508E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 2.5148E-04 1.5958E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -4.3505E-04 -1.6421E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 -5.6955E-05 5.5740E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0123] Table 8-2

[0124] Figure 8A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 8B The astigmatism curve of the optical imaging lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 8D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 8A to 8D It can be seen that the optical imaging lens given in Example 4 can achieve good imaging quality.

[0125] Example 5

[0126] The following is for reference Figures 9 to 10D An optical imaging lens according to Embodiment 5 of this application is described. Figure 9 A schematic diagram of the structure of an optical imaging lens according to Embodiment 5 of this application is shown.

[0127] like Figure 9 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, and filter E6.

[0128] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. The optical imaging lens has an imaging surface S13, on which light from the object sequentially passes through surfaces S1 to S12 and is finally imaged.

[0129] Table 9 shows the basic parameters of the optical imaging lens of Example 5, where the units for radius of curvature and thickness / distance are millimeters (mm). Tables 10-1 and 10-2 show the higher-order coefficients A4, A6, A8, and A6 that can be used for the aspherical mirrors S1 to S10 in Example 5. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 Each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0130]

[0131] Table 9

[0132] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.4398E-02 -4.6668E-03 -6.2541E-04 -8.8232E-05 -1.9447E-05 -5.2959E-06 -3.8110E-06 S2 -5.2360E-02 -3.2426E-03 -1.0469E-04 9.8739E-05 -1.8448E-06 -6.6973E-06 1.9747E-06 S3 -5.1610E-02 2.7041E-03 -1.0602E-04 3.1461E-04 -4.1440E-05 -1.3547E-05 -6.2676E-06 S4 -1.6992E-02 1.4945E-03 5.7420E-04 9.5780E-04 -3.1955E-05 -2.8674E-05 -1.9134E-05 S5 -1.2475E-01 -6.5524E-03 1.4042E-03 2.7357E-03 7.5268E-04 5.1491E-05 -1.3198E-04 S6 -2.0819E-01 -3.8344E-02 -4.9314E-03 2.8487E-03 -5.5317E-04 -2.0077E-04 -1.3622E-04 S7 -6.2256E-02 8.5320E-03 -1.6434E-02 2.5443E-03 -4.8141E-03 -6.6223E-04 -4.4841E-05 S8 -2.5383E-02 9.7111E-02 -1.8749E-02 9.4017E-04 -2.1317E-03 1.5914E-03 1.9288E-04 S9 -5.1589E-01 -1.6156E-02 3.0365E-02 -5.5463E-04 4.1732E-03 1.4123E-04 -2.5748E-04 S10 -8.9985E-01 5.8088E-04 -7.3389E-03 -2.5208E-03 8.5060E-03 -4.6399E-04 2.4804E-03

[0133] Table 10-1

[0134]

[0135]

[0136] Table 10-2

[0137] Figure 10A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 10B The astigmatism curve of the optical imaging lens of Embodiment 5 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10C The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 10D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 10A to 10D It can be seen that the optical imaging lens given in Example 5 can achieve good imaging quality.

[0138] Example 6

[0139] The following is for reference Figures 11 to 12D An optical imaging lens according to Embodiment 6 of this application is described. Figure 11 A schematic diagram of the structure of an optical imaging lens according to Embodiment 6 of this application is shown.

[0140] like Figure 11 As shown, the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, and filter E6.

[0141] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being concave. The third lens E3 has positive optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The filter E6 has an object-side surface S11 and an image-side surface S12. The optical imaging lens has an imaging surface S13, and light from the object passes sequentially through each surface S1 to S12 and is finally imaged on the imaging surface S13.

[0142] Table 11 shows the basic parameters of the optical imaging lens of Example 6, where the units for radius of curvature and thickness / distance are millimeters (mm). Tables 12-1 and 12-2 show the higher-order coefficients A4, A6, A8, and A6 that can be used for the aspherical mirrors S1 to S10 in Example 6. 10 A 12 A 14 A 16 A 18 A 20 A 22 A 24 A 26 A 28 and A 30 Each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0143]

[0144] Table 11

[0145] Face number A4 A6 A8 A10 A12 A14 A16 S1 -1.5015E-02 -4.8113E-03 -6.4048E-04 -8.9967E-05 -1.8535E-05 -4.8564E-06 -3.6875E-06 S2 -5.3732E-02 -3.2103E-03 -3.5884E-05 1.0588E-04 7.4010E-06 -4.8613E-06 2.9785E-06 S3 -5.1507E-02 2.6712E-03 -1.0953E-05 3.1500E-04 -4.1922E-05 -1.4874E-05 -7.1341E-06 S4 -1.7854E-02 1.8445E-03 5.1058E-04 9.0406E-04 -3.8107E-05 -3.1176E-05 -2.0089E-05 S5 -1.2551E-01 -5.4539E-03 1.2229E-03 2.5678E-03 6.3111E-04 1.7272E-05 -1.2531E-04 S6 -2.1441E-01 -3.6665E-02 -5.0461E-03 2.9122E-03 -4.8646E-04 -2.4385E-04 -1.1030E-04 S7 -6.0172E-02 8.5972E-03 -1.6308E-02 2.0283E-03 -4.2459E-03 -9.6737E-04 4.3339E-05 S8 -3.7885E-02 1.0045E-01 -2.0106E-02 1.0886E-03 -1.9249E-03 1.2928E-03 1.1778E-04 S9 -5.2432E-01 -1.3014E-02 2.7265E-02 2.9078E-03 3.5627E-03 4.0833E-04 -3.6412E-04 S10 -9.7829E-01 2.0351E-02 -1.5240E-02 2.3859E-03 6.8179E-03 6.4530E-04 2.1247E-03

[0146] Table 12-1

[0147] Face number A18 A20 A22 A24 A26 A28 A30 S1 -2.4691E-07 -5.2480E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S2 -7.2262E-07 6.5330E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S3 3.5987E-06 -9.1289E-07 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S4 4.5140E-06 -2.7346E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S5 -3.1980E-05 3.3699E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S6 2.8060E-05 3.6862E-05 1.3490E-05 4.9798E-06 -2.5216E-06 0.0000E+00 0.0000E+00 S7 2.7460E-04 1.0773E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S8 1.6038E-04 -3.1056E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S9 -1.8823E-04 -1.6639E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 S10 2.2215E-04 3.6913E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00

[0148] Table 12-2

[0149] Figure 12A The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of light of different wavelengths from the convergence focal point after passing through the lens. Figure 12B The astigmatism curve of the optical imaging lens of Embodiment 6 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12C The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 12D The magnification chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 12A to 12D It can be seen that the optical imaging lens given in Example 6 can achieve good imaging quality.

[0150] Furthermore, in Examples 1 to 6, the effective focal length f of the optical imaging lens, the effective focal length values ​​f1 to f5 of each lens, the distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens along the optical axis, half the diagonal length ImgH of the effective pixel area on the imaging surface, and half the maximum field of view Semi-FOV of the optical imaging lens are shown in Table 13.

[0151] Parameters / Examples 1 2 3 4 5 6 f(mm) 2.48 2.37 2.55 2.47 2.39 2.38 f1(mm) 2.78 2.68 2.76 2.76 2.78 2.78 f2 (mm) -3.69 -3.83 -3.82 -3.70 -3.64 -3.57 f3 (mm) 10.13 9.23 8.60 6.46 5.54 5.65 f4 (mm) 1.16 1.13 1.14 1.15 1.14 1.13 f5 (mm) -1.20 -1.20 -1.13 -1.17 -1.18 -1.17 TTL(mm) 3.67 3.45 3.73 3.66 3.55 3.53 ImgH(mm) 2.40 2.45 2.45 2.45 2.45 2.45

[0152] Table 13

[0153] Examples 1 to 6 respectively satisfy the conditions shown in Table 14.

[0154]

[0155]

[0156] Table 14

[0157] This application also provides an imaging device equipped with an electronic photosensitive element for imaging. The electronic photosensitive element can be a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) device. The imaging device can be a standalone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

[0158] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of protection involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the concept of this application. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical imaging lens, characterized in that, It includes, in order from the object side to the image side along the optical axis: A first lens with positive optical power, whose object side is convex and image side is convex; A second lens with negative optical power, whose image side is concave; A third lens with positive optical power, whose object side is convex; A fourth lens with positive optical power, whose object side is concave and image side is convex; and A fifth lens with negative optical power, whose object side is convex and image side is concave, wherein, the number of lenses with optical power in the optical imaging lens is five; The optical imaging lens satisfies: -13.38 ≤ R2 / R10 ≤ -10.33, where R2 is the curvature radius of the image side of the first lens and R10 is the curvature radius of the image side of the fifth lens; -60.0 < f5 / T45 ≤ -55.98, where f5 is the effective focal length of the fifth lens and T45 is the spacing distance between the fourth lens and the fifth lens on the optical axis; 37.6 < (CT3 + CT5) / T45 ≤ 43.33, where CT3 is the central thickness of the third lens on the optical axis and CT5 is the central thickness of the fifth lens on the optical axis; 1.41 ≤ TTL / ImgH ≤ 1.53, where TTL is the distance along the optical axis from the object side of the first lens to the imaging surface of the optical imaging lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface.

2. The optical imaging lens according to claim 1, characterized in that, The maximum field angle FOV of the optical imaging lens satisfies: 84.4° ≤ FOV ≤ 90.9°.

3. The optical imaging lens according to claim 1, characterized in that, The effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: 2.0 < f / EPD ≤ 2.

12.

4. The optical imaging lens according to claim 1, characterized in that, The curvature radius R1 of the object side of the first lens, the curvature radius R2 of the image side of the first lens, and the central thickness CT1 of the first lens on the optical axis satisfy: -13.75 ≤ (R1 + R2) / CT1 ≤ -8.

79.

5. The optical imaging lens according to claim 1, characterized in that, The effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens satisfy: 4.87 ≤ f3 / f4 ≤ 8.

7.

6. The optical imaging lens according to claim 1, characterized in that, The central thickness CT5 of the fifth lens on the optical axis and the spacing distance T45 between the fourth lens and the fifth lens on the optical axis satisfy: 14.09 ≤ CT5 / T45 ≤ 20.

34.

7. The optical imaging lens according to claim 1, characterized in that, The effective focal length f5 of the fifth lens and the central thickness CT5 of the fifth lens on the optical axis satisfy: -4.15 ≤ f5 / CT5 ≤ -2.

89.

8. The optical imaging lens according to claim 1, characterized in that, The effective focal length f5 of the fifth lens, the central thickness CT4 of the fourth lens on the optical axis, and the central thickness CT2 of the second lens on the optical axis satisfy: -3.55 ≤ (f5 + CT4) / CT2 < -2.

4.

9. The optical imaging lens according to any one of claims 1 to 8, characterized in that, The effective focal length f1 of the first lens, the effective focal length f4 of the fourth lens, and the curvature radius R8 of the image side of the fourth lens satisfy: -7.9 < (f1 + f4) / R8 ≤ -6.

46.

10. The optical imaging lens according to any one of claims 1 to 8, characterized in that, The effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the effective focal length f4 of the fourth lens satisfy: -2.70mm≤f1×f2 / (f1+f4)≤-2.55mm.

11. The optical imaging lens according to any one of claims 1 to 8, characterized in that, The radius of curvature R4 of the image-side surface of the second lens, the radius of curvature R5 of the object-side surface of the third lens, and the sum of the center thicknesses of the first to fifth lenses along the optical axis, ∑CT, satisfy the following: 2.6 < (R4 + R5) / ∑CT ≤ 3.

22.

12. The optical imaging lens according to any one of claims 1 to 8, characterized in that, The distance TTL from the object-side surface of the first lens to the imaging surface of the optical imaging lens along the optical axis, half the diagonal length ImgH of the effective pixel area on the imaging surface, and the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy the following: -0.88≤TTL×ImgH / (f1×f2)<-0.

8.

13. The optical imaging lens according to any one of claims 1 to 8, characterized in that, The radius of curvature R8 of the image-side surface of the fourth lens and the distance T23 between the second and third lenses on the optical axis satisfy the following: -3.72≤R8 / T23<-2.

7.

14. The optical imaging lens according to any one of claims 1 to 8, characterized in that, The radius of curvature R8 of the image-side surface of the fourth lens and the sum of the distances ∑AT between any two adjacent lenses with optical power from the first lens to the fifth lens on the optical axis satisfy the following: -1.0 <R8 / ∑AT<-0.85。

Images