Optical imaging lens

Abstract

The present application discloses an optical imaging lens. The optical imaging lens sequentially includes, from the object side to the image side along the optical axis, a first lens with positive optical power; a second lens with optical power; a third lens with positive optical power, having a concave object side and a convex image side; a fourth lens with positive optical power, having a concave object side and a convex image side; and a fifth lens with optical power. Wherein, the maximum semi-field angle Semi-FOV of the optical imaging lens satisfies: Semi-FOV > 48°.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and specifically, to an optical imaging lens. Background Art

[0002] With the gradual enhancement of the imaging functions of miniaturized electronic devices such as smart phones, the market has put forward higher and higher requirements for hardware conditions such as CCD and CMOS image sensors, as well as the optical performance of the optical imaging lenses set on mobile phones. Especially with the development of 5G technology, under the support of high-speed communication technology, mobile phone live broadcasts have become increasingly popular. To adapt to this application trend, the front camera of a mobile phone can be provided with an ultra-wide-angle optical imaging lens, so as to capture images with richer information by combining two optical imaging lenses of wide-angle and ultra-wide-angle with an image fusion processing algorithm. Among them, the ultra-wide-angle lens has the characteristics of a larger field of view angle and a larger depth of field. When the size of the sensor image plane is the same, the larger the full field of view angle of the optical imaging lens, the more information the captured imaging picture of the lens covers, thereby improving the shooting performance of the electronic device. At the same time, the continuous thinning of the optical imaging lens is beneficial to the development of electronic devices towards the trend of miniaturization. Summary of the Invention

[0003] One aspect of the present application provides such an optical imaging lens, which sequentially includes, along the optical axis from the object side to the image side: a first lens with a positive focal power; a second lens with a focal power; a third lens with a positive focal power, whose object side is concave and image side is convex; a fourth lens with a positive focal power, whose object side is concave and image side is convex; and a fifth lens with a focal power.

[0004] In one embodiment, the maximum semi-field angle Semi-FOV of the optical imaging lens satisfies: Semi-FOV > 48°.

[0005] In one embodiment, the distance TTL on the optical axis from the object side of the first lens to the imaging plane of the optical imaging lens and half of the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens satisfy: 1.0 < TTL / ImgH < 2.0.

[0006] In one embodiment, the effective focal length f1 of the first lens and the effective focal length f3 of the third lens satisfy: 1.0 < f1 / f3 < 2.0.

[0007] In one embodiment, the radius of curvature R5 of the object side of the third lens, the radius of curvature R6 of the image side of the third lens, and the radius of curvature R2 of the image side of the first lens satisfy: 1.0 < (R5 + R6) / R2 < 3.0.

[0008] In one embodiment, the radius of curvature R7 of the object side surface of the fourth lens, the radius of curvature R8 of the image side surface of the fourth lens, and the total effective focal length f of the optical imaging lens satisfy: -1.5 < (R7 + R8) / f < -1.0.

[0009] In one embodiment, the central thickness CT3 of the third lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis satisfy: CT3 / CT4 > 2.9.

[0010] In one embodiment, the spacing distance T12 between the first lens and the second lens on the optical axis, the spacing distance T23 between the second lens and the third lens on the optical axis, and the spacing distance T34 between the third lens and the fourth lens on the optical axis satisfy: 0.5 < T12 / (T23 + T34) < 1.5.

[0011] In one embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT21 of the object side surface of the second lens satisfy: 1.0 < DT21 / DT11 < 2.5.

[0012] In one embodiment, the maximum effective radius DT32 of the image side surface of the third lens and the axial distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens satisfy: -2.5 < DT32 / SAG32 < -1.5.

[0013] In one embodiment, the axial distance SAG41 from the intersection of the object side surface of the fourth lens and the optical axis to the vertex of the effective radius of the object side surface of the fourth lens, the axial distance SAG42 from the intersection of the image side surface of the fourth lens and the optical axis to the vertex of the effective radius of the image side surface of the fourth lens, and the axial distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object side surface of the fifth lens satisfy: 1.0 < (|SAG41| + |SAG51|) / |SAG42| < 3.5.

[0014] In one embodiment, the central thickness CT3 of the third lens on the optical axis and the edge thickness ET3 of the third lens satisfy: 2.5 < CT3 / ET3 < 3.5.

[0015] In one embodiment, the distance BFL from the image side surface of the fifth lens to the imaging surface on the optical axis and the central thickness CT5 of the fifth lens on the optical axis satisfy: 0.5 < BFL / CT5 < 4.0.

[0016] The optical imaging lens provided by the present application adopts a plurality of lens settings, including a first lens to a fifth lens. By reasonably setting the maximum half field of view angle of the optical imaging lens and optimizing the optical power and surface shape of each lens, the optical imaging lens has good imaging quality while having a large field of view angle. Description of the Drawings

[0017] With reference to the accompanying drawings, through the following detailed description of non-limiting embodiments, other features, objectives, and advantages of the present application will become more apparent. In the drawings:

[0018] Figure 1 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application;

[0019] Figures 2A to 2D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 1;

[0020] Figure 3 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application;

[0021] Figures 4A to 4D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 2;

[0022] Figure 5 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application;

[0023] Figures 6A to 6D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 3;

[0024] Figure 7 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application;

[0025] Figures 8A to 8D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 4;

[0026] Figure 9 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application;

[0027] Figures 10A to 10D Respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 5;

[0028] Figure 11 Shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application;

[0029] Figures 12A to 12D The axial chromatic aberration curve, astigmatism curve, distortion curve, and lateral chromatic aberration curve of the optical imaging lens of Embodiment 6 are respectively shown. Detailed implementation manners

[0030] To better understand the present application, more detailed descriptions will be made for various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of the exemplary embodiments of the present application, and do not limit the scope of the present 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.

[0031] It should be noted that in this specification, the expressions such as first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the features. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0032] In the drawings, for the sake of convenience of illustration, the thickness, size, and shape of the lens have been slightly exaggerated. Specifically, the spherical or aspherical shapes shown in the drawings are shown by way of example. That is, the spherical or aspherical shapes are not limited to the spherical or aspherical shapes shown in the drawings. The drawings are only for illustration and are not drawn strictly to scale.

[0033] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the position of the convex surface 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 position of the concave surface 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 to be photographed 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.

[0034] It should also be understood that the terms "comprise", "comprising", "have", "containing", and / or "containing" 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. In addition, when an expression such as "at least one of..." appears after the list of listed features, it modifies the entire list of listed features, rather than modifying the individual elements in the list. In addition, when describing the embodiments of the present application, the use of "may" means "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0035] 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 should also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning 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.

[0036] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will detail this application with reference to the drawings and in combination with the embodiments.

[0037] The features, principles, and other aspects of this application will be described in detail below.

[0038] The optical imaging lens according to an exemplary embodiment of this application may include, for example, five lenses having optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. These five lenses are arranged in sequence from the object side to the image side along the optical axis.

[0039] In the exemplary embodiment, the first lens may have positive optical power; the second lens may have positive or negative optical power; the third lens may have positive optical power, its object side may be concave, and its image side may be convex; the fourth lens may have positive optical power, its object side may be concave, and its image side may be convex; and the fifth lens may have positive or negative optical power. By reasonably configuring the optical power and surface shape of each lens, the imaging quality of the optical imaging lens can be improved.

[0040] In the exemplary embodiment, the image side of the first lens may be convex.

[0041] In the exemplary embodiment, the object side of the second lens may be convex.

[0042] In the exemplary embodiment, the maximum semi-field of view Semi-FOV of the optical imaging lens satisfies: Semi-FOV > 48°. Reasonably setting the semi-field angle of the optical imaging lens so that the maximum semi-field angle is above 48° is beneficial to reducing the equivalent focal length of the optical imaging system, enabling the optical imaging lens to have a wide-angle function, and thus allowing for the capture of images with more content in the frame.

[0043] In an exemplary embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens satisfy: 1.0 < TTL / ImgH < 2.0. For example, 1.4 < TTL / ImgH < 1.6. Setting the ratio of the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis to half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens within a reasonable numerical range is beneficial to controlling the overall optical length of the optical imaging lens and making it reach an ultra-thin state.

[0044] In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f3 of the third lens satisfy: 1.0 < f1 / f3 < 2.0. Reasonably setting the proportional relationship between the effective focal length of the first lens and the effective focal length of the third lens enables the first lens and the third lens to bear a certain positive optical power, which is beneficial for the optical imaging lens to converge the light beam and correct off-axis coma and system distortion.

[0045] In an exemplary embodiment, the radius of curvature R5 of the object side surface of the third lens, the radius of curvature R6 of the image side surface of the third lens, and the radius of curvature R2 of the image side surface of the first lens satisfy: 1.0 < (R5 + R6) / R2 < 3.0. Reasonably setting the correlation between the radius of curvature of the object side surface of the third lens, the radius of curvature of the image side surface of the third lens, and the radius of curvature of the image side surface of the first lens is beneficial to weakening the ghost image energy generated by the reflection of light on the lens surfaces of the first lens and the third lens.

[0046] In an exemplary embodiment, the radius of curvature R7 of the object side surface of the fourth lens, the radius of curvature R8 of the image side surface of the fourth lens, and the total effective focal length f of the optical imaging lens satisfy: -1.5 < (R7 + R8) / f < -1.0. Reasonably setting the mutual relationship between the radius of curvature of the object side surface of the fourth lens, the radius of curvature of the image side surface of the fourth lens, and the total effective focal length of the optical imaging lens and controlling the radius of curvature of the object side surface and the image side surface of the fourth lens is beneficial for the fourth lens to bear a certain optical power to effectively correct axial chromatic aberration and off-axis lateral chromatic aberration.

[0047] In an exemplary embodiment, the central thickness CT3 of the third lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis satisfy: CT3 / CT4 > 2.9. For example, 10.00 > CT3 / CT4 > 2.9. Setting the ratio of the central thickness of the third lens on the optical axis to the central thickness of the fourth lens on the optical axis within a reasonable numerical range is beneficial to meeting the process requirements of the lens forming process under the condition of ensuring the overall optical length.

[0048] In an exemplary embodiment, the spacing distance T12 between the first lens and the second lens on the optical axis, the spacing distance T23 between the second lens and the third lens on the optical axis, and the spacing distance T34 between the third lens and the fourth lens on the optical axis satisfy: 0.5 < T12 / (T23 + T34) < 1.5. For example, 0.5 < T12 / (T23 + T34) < 1.1. Reasonably setting the relationship between the spacing distance between the first lens and the second lens on the optical axis, the spacing distance between the second lens and the third lens on the optical axis, and the spacing distance between the third lens and the fourth lens on the optical axis to satisfy the above conditions is beneficial to appropriately increasing the air gap between the first lens and the second lens, so that the optical imaging lens meets the structural requirements of a small head, and is also beneficial to reducing the incident angle of the light beam on each surface by controlling the air gap between the second lens and the third lens and the air gap between the third lens and the fourth lens, and improving the tolerance sensitivity of the lens while meeting the condition of the overall optical length.

[0049] In an exemplary embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT21 of the object side surface of the second lens satisfy: 1.0 < DT21 / DT11 < 2.5. For example, 1.4 < DT21 / DT11 < 2.2. Reasonably setting the proportional relationship between the maximum effective radius of the object side surface of the second lens and the maximum effective radius of the object side surface of the first lens is beneficial to the smooth transition of the light rays incident from the first lens to the surface of the second lens, and avoiding a large impact of the vignetting diaphragm on the relative illumination of the edge field of view.

[0050] In an exemplary embodiment, the maximum effective radius DT32 of the image side surface of the third lens and the axial distance SAG32 from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens satisfy: -2.5 < DT32 / SAG32 < -1.5. For example, -2.1 < DT32 / SAG32 < -1.5. Reasonably setting the proportional relationship between the maximum effective radius of the image side surface of the third lens and the axial distance from the intersection of the image side surface of the third lens and the optical axis to the vertex of the effective radius of the image side surface of the third lens, and restricting the aperture and sagitta of the image side surface of the third lens, is beneficial to controlling the lens shape of the third lens to correct the Petzval field curvature and the astigmatism in the meridian direction of the optical imaging lens.

[0051] In an exemplary embodiment, the axial distance SAG41 from the intersection of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, the axial distance SAG42 from the intersection of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens, and the axial distance SAG51 from the intersection of the object side surface of the fifth lens and the optical axis to the effective radius vertex of the object side surface of the fifth lens satisfy: 1.0 < (|SAG41| + |SAG51|) / |SAG42| < 3.5. Reasonably setting the mutual relationship among the above three and making them satisfy the above conditions is beneficial to correcting the astigmatism in the sagittal direction of the optical imaging lens and the optical distortion of the optical imaging lens.

[0052] In an exemplary embodiment, the central thickness CT3 of the third lens on the optical axis and the edge thickness ET3 of the third lens satisfy: 2.5 < CT3 / ET3 < 3.5. Reasonably setting the proportional relationship between the central thickness of the third lens on the optical axis and the edge thickness of the third lens is beneficial to enhancing the processability of the third lens and correcting the Petzval field curvature and spherical aberration of the optical imaging lens.

[0053] In an exemplary embodiment, the distance BFL from the image side surface of the fifth lens to the imaging surface on the optical axis and the central thickness CT5 of the fifth lens on the optical axis satisfy: 0.5 < BFL / CT5 < 4.0. For example, 0.8 < BFL / CT5 < 3.7. Reasonably setting the proportional relationship between the distance from the image side surface of the fifth lens to the imaging surface on the optical axis and the central thickness of the fifth lens on the optical axis is beneficial to controlling the optical length while correcting the Petzval field curvature of the optical imaging lens.

[0054] In an exemplary embodiment, the above optical imaging lens may further include a diaphragm. The diaphragm can be set at an appropriate position as needed. For example, a diaphragm is provided between the object side and the first lens, near the object side surface of the first lens. 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.

[0055] In an exemplary embodiment, at least one of the lens surfaces of each lens is an aspherical lens surface, that is, at least one of the object side surface of the first lens to the image side surface of the fifth lens is an aspherical lens surface. The characteristics of an aspherical lens are that the curvature changes continuously from the center of the lens to the periphery of the lens. Different from a spherical lens with 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 the advantages of improving distortion aberration and astigmatism aberration. After using an aspherical lens, it is possible to eliminate as much as possible the aberration that appears during imaging, thereby improving the imaging quality. Optionally, at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is an aspherical lens surface. Optionally, both the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are aspherical lens surfaces.

[0056] The optical imaging lens according to the present application has the characteristics of being ultra-thin and wide-angle. While having a larger field of view angle, it can achieve good imaging quality and can be used in combination with an image fusion processing algorithm to obtain an image with richer information.

[0057] The present application also provides an imaging device, and its electronic photosensitive element can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor element (CMOS). The imaging device can be an independent imaging device such as a digital camera, or 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.

[0058] The exemplary embodiment of the present application also provides an electronic device, and the electronic device includes the imaging device described above.

[0059] However, those skilled in the art should understand that without departing from the technical solution claimed in the present application, the number of lenses constituting the optical imaging lens can be changed to obtain the various results and advantages described in this specification. For example, although five lenses are described as an example in the embodiment, the optical imaging lens is not limited to including five lenses. If necessary, the optical imaging lens can also include other numbers of lenses.

[0060] The specific embodiments of the optical imaging lens applicable to the above embodiments will be further described below with reference to the accompanying drawings.

[0061] Example 1

[0062] The following refers to Figures 1 to 2D Describe the optical imaging lens according to Embodiment 1 of the present application. Figure 1 FIG. is a schematic structural diagram showing the optical imaging lens according to Embodiment 1 of the present application.

[0063] As shown Figure 1 in FIG. 1, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a diaphragm STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0064] The first lens E1 has a positive optical power, its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has a positive optical power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has a positive optical power, its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has a positive optical power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has a negative optical power, its object side surface S9 is convex, and its image side surface S10 is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0065] Table 1 shows the basic parameter table of the optical imaging lens of Embodiment 1, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0066]

[0067] Table 1

[0068] In this embodiment, the total effective focal length f of the optical imaging lens is 2.14 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.62 mm, half of the diagonal length of the effective pixel region on the imaging surface S13 is ImgH = 2.43 mm, the maximum half field of view of the optical imaging lens is Semi-FOV = 53.7°, and the f-number of the optical imaging lens is Fno = 2.49.

[0069] In Embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

[0070]

[0071] where x is the sagitta, the distance from the vertex of the aspherical surface at the position with 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 correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the high-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A16 and A 18 and A 20 .

[0072]

[0073]

[0074] Table 2

[0075] Figure 2A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the lens. Figure 2B shows the astigmatism curve of the optical imaging lens of Embodiment 1, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 2C shows the distortion curve of the optical imaging lens of Embodiment 1, which represents the distortion magnitude values corresponding to different field angles. Figure 2D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 1, which represents the deviation of different image heights of light rays on the imaging plane after passing through the lens. According to Figures 2A to 2D it can be known that the optical imaging lens given in Embodiment 1 can achieve good imaging quality.

[0076] Example 2

[0077] The following refers to Figures 3 to 4D to describe the optical imaging lens according to Embodiment 2 of the present application. Figure 3 shows a schematic structural diagram of the optical imaging lens according to Embodiment 2 of the present application.

[0078] As Figure 3 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0079] The first lens E1 has a positive optical power, its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has a negative optical power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has a positive optical power, its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has a positive optical power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has a negative optical power, its object side surface S9 is convex, and its image side surface S10 is concave. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0080] In this embodiment, the total effective focal length f of the optical imaging lens is 2.14 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.53 mm, half of the diagonal length of the effective pixel region on the imaging surface S13 is ImgH = 2.45 mm, the maximum half field of view of the optical imaging lens is Semi - FOV = 51.9°, and the f - number of the optical imaging lens is Fno = 2.49.

[0081] Table 3 shows the basic parameter table of the optical imaging lens of Embodiment 2, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0082]

[0083] Table 3

[0084] In Embodiment 2, the object side surface and the image side surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 4 below gives the higher - order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 and A 20 that can be used for the aspherical mirror surfaces S1 - S10 in Embodiment 2.

[0085] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.4953E-02 -5.9509E-04 -1.3022E-06 -8.0341E-06 -2.1368E-05 -1.6395E-05 1.0783E-05 -1.4734E-05 -1.1643E-05 S2 -5.2224E-02 2.7239E-03 -3.4343E-04 1.7539E-05 -8.3347E-06 -7.0154E-06 -3.7365E-06 -1.5175E-06 -1.4702E-07 S3 -9.2720E-02 1.8806E-02 -1.7720E-04 -6.9077E-04 1.5341E-04 6.6936E-05 1.1872E-05 2.1428E-05 1.6833E-06 S4 -4.9653E-02 1.2569E-02 -2.3173E-03 -1.1164E-03 -8.1411E-05 -1.7703E-04 -7.4297E-05 -5.3118E-05 -3.4534E-05 S5 5.6451E-02 1.6635E-02 -3.9482E-03 5.4994E-04 1.7150E-04 -8.4264E-05 -9.8585E-06 -2.9744E-05 8.1853E-06 S6 7.5277E-02 1.1647E-01 -2.0712E-02 4.3999E-03 -2.8999E-03 1.9648E-03 -3.6714E-04 1.2699E-04 -1.6103E-05 S7 -7.3051E-02 1.2384E-01 -1.4008E-02 -1.0817E-03 -6.8132E-04 1.7914E-03 -8.0244E-04 1.4921E-04 -1.9515E-07 S8 7.2623E-01 -3.0280E+00 5.1176E+00 -4.7494E+00 4.4404E+00 -5.0478E+00 4.0384E+00 -1.6913E+00 2.7990E-01 S9 -1.2870E+00 2.4019E-01 5.0542E-04 -2.4388E-02 -1.7282E-02 -2.3145E-03 3.3958E-03 7.1231E-04 -9.6672E-04 S10 -9.7022E-01 9.6520E-02 -1.1715E-02 -3.3133E-03 2.3118E-03 -1.1275E-02 -8.2141E-04 -4.3683E-03 -5.9503E-05

[0086] Table 4

[0087] Figure 4A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of the convergence points of light rays with different wavelengths after passing through the lens. Figure 4B shows the astigmatism curve of the optical imaging lens of Embodiment 2, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4C shows the distortion curve of the optical imaging lens of Embodiment 2, which represents the distortion magnitude values corresponding to different field of view angles. Figure 4D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 2, which represents the deviation of different image heights on the imaging surface after light rays pass through the lens. According to Figures 4A to 4D it can be known that the optical imaging lens given in Embodiment 2 can achieve good imaging quality.

[0088] Example 3

[0089] The following refers to Figures 5 to 6D to describe the optical imaging lens according to Embodiment 3 of the present application. Figure 5 shows the structural schematic diagram of the optical imaging lens according to Embodiment 3 of the present application.

[0090] As shown Figure 5 in the figure, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0091] The first lens E1 has a positive optical power, its object surface S1 is convex, and its image surface S2 is convex. The second lens E2 has a positive optical power, its object surface S3 is convex, and its image surface S4 is convex. The third lens E3 has a positive optical power, its object surface S5 is concave, and its image surface S6 is convex. The fourth lens E4 has a positive optical power, its object surface S7 is concave, and its image surface S8 is convex. The fifth lens E5 has a negative optical power, its object surface S9 is convex, and its image surface S10 is concave. The filter E6 has an object surface S11 and an image surface S12. The light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0092] In this embodiment, the total effective focal length f of the optical imaging lens is 2.10 mm, the distance TTL on the optical axis from the object surface S1 of the first lens E1 to the imaging surface S13 is 3.40 mm, half of the diagonal length of the effective pixel region on the imaging surface S13 is ImgH = 2.17 mm, the maximum half field of view of the optical imaging lens is Semi-FOV = 48.1°, and the f-number of the optical imaging lens is Fno = 2.49.

[0093] Table 5 shows the basic parameter table of the optical imaging lens of Embodiment 3, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0094]

[0095]

[0096] Table 5

[0097] In Embodiment 3, the object surface and the image surface of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 6 below gives the higher-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , and A 20 that can be used for the aspherical surfaces S1 - S10 in Embodiment 3.

[0098] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -2.5510E-02 -1.9727E-03 -1.9374E-04 -2.7948E-05 -7.6061E-06 -1.0149E-07 1.0870E-07 8.4611E-07 -1.5145E-07 S2 -6.9756E-02 -1.1974E-03 -7.4877E-04 -2.1084E-04 -2.8161E-05 1.9135E-06 1.1975E-06 8.0419E-07 2.0952E-06 S3 -1.3478E-01 1.7367E-02 -8.8546E-04 -1.8859E-03 4.5382E-04 2.6047E-05 -1.6354E-05 -2.5651E-05 9.1316E-06 S4 -5.8249E-02 1.5751E-05 7.4727E-04 -4.7598E-03 5.4974E-04 -1.3451E-04 -4.5530E-05 -6.6025E-05 3.1556E-05 S5 5.6259E-02 1.0842E-02 1.7441E-03 -5.3151E-04 -1.3107E-03 7.9095E-04 -1.5504E-04 -1.7294E-05 4.7364E-06 S6 9.1085E-02 5.6055E-02 -7.8437E-03 4.1334E-03 1.3525E-03 5.1581E-04 2.5056E-04 -3.1134E-04 -3.6993E-06 S7 -8.3121E-02 1.0476E-01 -1.4611E-02 -3.3214E-03 2.0618E-03 6.3190E-04 -2.3400E-05 -1.8224E-04 6.6026E-05 S8 7.3857E-01 -3.0196E+00 5.1226E+00 -4.7491E+00 4.4375E+00 -5.0512E+00 4.0363E+00 -1.6906E+00 2.8489E-01 S9 -6.1273E-01 4.0630E-01 -5.4164E-01 -8.2787E-03 1.4006E-01 -2.2760E-01 -1.0490E-01 6.5187E-02 7.3179E-02 S10 -6.8721E-01 -3.2937E-02 3.7355E-02 1.0213E-02 4.7377E-02 1.3871E-02 2.0281E-02 3.4124E-03 4.4739E-03

[0099] Table 6

[0100] Figure 6A The axial chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of the convergence points of light rays of different wavelengths 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 Embodiment 3 is shown, which represents the distortion magnitude values corresponding to different field angles. Figure 6D The lateral 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 rays pass through the lens. According to Figures 6A to 6D it can be known that the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

[0101] Example 4

[0102] The following will refer to Figures 7 to 8D describe the optical imaging lens according to Embodiment 4 of the present application. Figure 7 The structural schematic diagram of the optical imaging lens according to Embodiment 4 of the present application is shown.

[0103] As Figure 7 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0104] The first lens E1 has a positive optical power, its object side surface S1 is concave, and its image side surface S2 is convex. The second lens E2 has a negative optical power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has a positive optical power, its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has a positive optical power, its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has a positive optical power, its object side surface S9 is concave, and its image side surface S10 is convex. The filter E6 has an object side surface S11 and an image side surface S12. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0105] In this embodiment, the total effective focal length f of the optical imaging lens is 2.16 mm, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13 is 3.86 mm, half of the diagonal length of the effective pixel area on the imaging surface S13 is ImgH = 2.67 mm, the maximum half field of view Semi - FOV of the optical imaging lens is 51.2°, and the f - number Fno of the optical imaging lens is 2.49.

[0106] Table 7 shows the basic parameter table of the optical imaging lens of Embodiment 4, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0107]

[0108] Table 7

[0109] In Embodiment 4, the object side and the image side of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 8 below gives the higher-order term coefficients A4, A6, A8, A 10 、A 12 、A 14 、A 16 、A 18 and A 20 .

[0110] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.5125E-02 -6.3114E-04 -8.2793E-05 -2.1398E-04 -1.7316E-04 5.2172E-05 -1.4860E-04 -4.2624E-04 2.6499E-04 S2 -5.1152E-02 3.0051E-03 -3.4985E-05 7.8831E-04 -4.8695E-05 2.3594E-04 1.9479E-04 -6.5316E-06 8.7591E-06 S3 -9.2780E-02 1.8316E-02 -3.4576E-04 3.0091E-05 1.7596E-04 -2.7993E-04 3.2916E-04 6.3544E-04 -6.3319E-04 S4 -5.0042E-02 1.3018E-02 -2.1538E-03 1.7437E-03 1.6418E-04 -8.9591E-04 -6.4360E-04 -1.3026E-04 4.3341E-04 S5 5.7132E-02 1.6595E-02 -4.0986E-03 5.9392E-04 1.5995E-04 -4.9594E-05 -1.2239E-05 -4.0196E-05 9.7898E-06 S6 7.4290E-02 1.1629E-01 -2.0455E-02 4.2317E-03 -2.6962E-03 1.8466E-03 -2.5384E-04 7.3422E-05 -1.7102E-04 S7 -7.1350E-02 1.2403E-01 -1.4194E-02 -8.3953E-04 -4.8217E-04 1.6333E-03 -8.6455E-04 2.1724E-04 2.6975E-05 S8 7.1420E-01 -3.0320E+00 5.1165E+00 -4.7489E+00 4.4407E+00 -5.0476E+00 4.0384E+00 -1.6913E+00 2.7995E-01 S9 -9.6391E+01 -4.1007E+01 6.6069E-04 1.1621E+01 6.5463E+00 1.3775E+00 2.4231E-03 8.9187E-04 -1.6639E-03 S10 -9.7864E-01 -3.5262E-01 -5.6358E-01 -4.8205E-03 1.1257E-03 -2.3224E-02 -1.0307E-03 -4.2814E-03 -7.6755E-04

[0111] Table 8

[0112] Figure 8A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 8B shows the astigmatism curve of the optical imaging lens of Embodiment 4, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8C shows the distortion curve of the optical imaging lens of Embodiment 4, which represents the distortion magnitude values corresponding to different field angles. Figure 8D shows the lateral chromatic aberration curve of the optical imaging lens of Embodiment 4, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 8A to 8D it can be seen that the optical imaging lens given in Embodiment 4 can achieve good imaging quality.

[0113] Example 5

[0114] The following refers to Figures 9 to 10D to describe the optical imaging lens according to Embodiment 5 of the present application. Figure 9 shows the structural schematic diagram of the optical imaging lens according to Embodiment 5 of the present application.

[0115] As Figure 9 shown, the optical imaging lens sequentially includes, along the optical axis from the object side to the image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0116] The first lens E1 has a positive optical power, with its object side S1 being convex and its image side S2 being convex. The second lens E2 has a negative optical power, with its object side S3 being convex and its image side S4 being concave. The third lens E3 has a positive optical power, with its object side S5 being concave and its image side S6 being convex. The fourth lens E4 has a positive optical power, with its object side S7 being concave and its image side S8 being convex. The fifth lens E5 has a negative optical power, with its object side S9 being concave and its image side S10 being concave. The filter E6 has an object side S11 and an image side S12. Light from the object sequentially passes through each surface S1 to S12 and finally forms an image on the imaging surface S13.

[0117] In this embodiment, the total effective focal length f of the optical imaging lens is 2.14 mm, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S13 is 3.56 mm, half of the diagonal length of the effective pixel region on the imaging surface S13 is ImgH = 2.43 mm, the maximum half field of view of the optical imaging lens is Semi-FOV = 52.0°, and the f-number of the optical imaging lens is Fno = 2.49.

[0118] Table 9 shows the basic parameter table of the optical imaging lens of Embodiment 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0119]

[0120] Table 9

[0121] In Embodiment 5, the object side and the image side of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 10 below gives the higher-order term coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 , and A 20 that can be used for the aspherical surfaces S1 - S10 in Embodiment 5.

[0122]

[0123]

[0124] Table 10

[0125] Figure 10A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 5, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 10B shows the astigmatism curve of the optical imaging lens of Embodiment 5, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10CThe distortion curve of the optical imaging lens of Embodiment 5 is shown, which represents the distortion magnitude values corresponding to different field angles of view. Figure 10D The longitudinal 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 Embodiment 5 can achieve good imaging quality.

[0126] Example 6

[0127] The following refers to Figures 11 to 12D describe the optical imaging lens according to Embodiment 6 of the present application. Figure 11 The structural schematic diagram of the optical imaging lens according to Embodiment 6 of the present application is shown.

[0128] As Figure 11 shown, the optical imaging lens sequentially includes, from the object side to the image side along the optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

[0129] The first lens E1 has a positive optical power, its object surface S1 is concave, and its image surface S2 is convex. The second lens E2 has a negative optical power, its object surface S3 is convex, and its image surface S4 is concave. The third lens E3 has a positive optical power, its object surface S5 is concave, and its image surface S6 is convex. The fourth lens E4 has a positive optical power, its object surface S7 is concave, and its image surface S8 is convex. The fifth lens E5 has a negative optical power, its object surface S9 is concave, and its image surface S10 is convex. The filter E6 has an object surface S11 and an image surface S12. Light from the object sequentially passes through the surfaces S1 to S12 and finally forms an image on the imaging surface S13.

[0130] In this embodiment, the total effective focal length f of the optical imaging lens is 2.04 mm, the distance TTL on the optical axis from the object surface S1 of the first lens E1 to the imaging surface S13 is 3.68 mm, half of the diagonal length of the effective pixel region on the imaging surface S13 is ImgH = 2.43 mm, the maximum half field of view Semi - FOV of the optical imaging lens is 52.4°, and the f - number Fno of the optical imaging lens is 2.49.

[0131] Table 11 shows the basic parameter table of the optical imaging lens of Embodiment 6, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0132]

[0133]

[0134] Table 11

[0135] In Embodiment 6, the object side and the image side of any one of the first lens E1 to the fifth lens E5 are aspherical surfaces. Table 12 below gives the higher-order coefficients A4, A6, A8, A 10 , A 12 , A 14 , A 16 , A 18 and A 20 for each of the aspherical mirror surfaces S1 - S10 in Embodiment 6.

[0136] Plane number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -1.5606E-02 -6.5877E-04 -3.5035E-06 -1.3004E-05 1.9728E-06 -5.4221E-06 -3.5314E-06 -6.5625E-06 -2.8641E-06 S2 -5.2413E-02 4.0426E-03 -6.9542E-04 8.9541E-05 -2.0332E-05 2.9164E-06 3.2463E-06 3.0592E-07 3.3179E-06 S3 -8.5198E-02 1.9755E-02 -1.5358E-03 -9.6166E-04 3.8158E-04 -2.0940E-05 1.2750E-05 -1.7577E-05 -1.1905E-06 S4 -3.9399E-02 1.1424E-02 -2.9260E-03 -1.1573E-03 -1.9205E-04 -3.2804E-04 -3.9457E-05 -3.3316E-05 -5.6867E-06 S5 6.4060E-02 2.0232E-02 -2.8745E-03 9.4534E-05 2.2394E-04 -2.9485E-04 -1.6102E-04 5.6484E-05 1.2766E-05 S6 8.9895E-02 1.1286E-01 -1.5321E-02 6.0570E-03 -1.1752E-03 2.9386E-03 -6.8145E-05 -4.9013E-05 -1.6407E-04 S7 -6.7541E-02 1.2792E-01 -1.8121E-02 2.6906E-03 -1.6158E-03 1.7088E-03 -4.0479E-04 4.2914E-05 3.1859E-05 S8 6.9729E-01 -3.0275E+00 5.1210E+00 -4.7467E+00 4.4424E+00 -5.0465E+00 4.0392E+00 -1.6908E+00 2.8018E-01 S9 -3.9446E-01 4.0882E-02 -2.2417E-02 -1.0842E-01 5.5223E-02 -2.5091E-02 1.7710E-02 -1.0737E-02 1.5127E-02 S10 -1.7776E-01 -4.1042E-01 9.2789E-02 -9.1903E-02 6.4504E-02 -2.5746E-02 9.6977E-03 -9.0833E-03 3.6216E-03

[0137] Table 12

[0138] Figure 12A shows the axial chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of the convergence points of light rays of different wavelengths after passing through the lens. Figure 12B shows the astigmatism curve of the optical imaging lens of Embodiment 6, which represents the curvature of the meridional image plane and the curvature of the sagittal image plane. Figure 12C shows the distortion curve of the optical imaging lens of Embodiment 6, which represents the distortion magnitude values corresponding to different field angles. Figure 12D shows the longitudinal chromatic aberration curve of the optical imaging lens of Embodiment 6, which represents the deviation of different image heights on the imaging plane after the light rays pass through the lens. According to Figures 12A to 12D , it can be seen that the optical imaging lens given in Embodiment 6 can achieve good imaging quality.

[0139] In summary, Embodiments 1 to 6 respectively satisfy the relationships shown in Table 13.

[0140] Conditional / Example 1 2 3 4 5 6 TTL / ImgH 1.49 1.44 1.57 1.45 1.46 1.51 f1 / f3 1.98 1.48 1.11 1.46 1.56 1.54 (R5 + R6) / R2 2.62 1.64 1.27 1.95 2.28 2.38 (R7 + R8) / f -1.30 -1.13 -1.21 -1.12 -1.14 -1.19 CT3 / CT4 9.74 4.96 5.61 4.94 2.98 4.58 T12 / (T23 + T34) 1.01 0.81 0.77 0.51 0.54 0.51 DT21 / DT11 1.83 1.77 1.49 2.11 1.81 1.84 DT32 / SAG32 -1.78 -1.93 -1.61 -1.87 -2.07 -2.04 (|SAG41| + |SAG51|) / |SAG42| 1.79 1.04 1.75 3.12 1.75 1.87 CT3 / ET3 2.98 2.98 3.32 2.54 2.80 3.08 BFL / CT5 2.75 3.60 1.59 3.33 1.71 0.81

[0141] Table 13

[0142] The above description is only the preferred embodiments of the present application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An optical imaging lens, characterized in that, In order from the object side to the image side along the optical axis, it includes: A first lens with positive optical power; A second lens with positive or negative optical power, whose object side is convex; A third lens with positive optical power, whose object side is concave and image 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 positive or negative optical power; wherein, the maximum semi-field angle Semi-FOV of the optical imaging lens satisfies: 53.7°≥Semi-FOV>48°; The central thickness CT3 of the third lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis satisfy: 2.98≤CT3 / CT4≤9.74; The number of lenses with optical power in the optical imaging lens is five; At least one of the second lens and the fifth lens has negative optical power.

2. The optical imaging lens according to claim 1, wherein, The distance TTL on the optical axis from the object side of the first lens to the imaging surface of the optical imaging lens and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy: 1.4<TTL / ImgH<1.

6.

3. The optical imaging lens according to claim 1, characterized in that The effective focal length f1 of the first lens and the effective focal length f3 of the third lens satisfy: 1.11≤f1 / f3<2.

0.

4. The optical imaging lens according to claim 1, wherein The curvature radius R5 of the object side of the third lens, the curvature radius R6 of the image side of the third lens and the curvature radius R2 of the image side of the first lens satisfy: 1.27≤(R5+R6) / R2≤2.

62.

5. The optical imaging lens according to claim 1, characterized in that, The curvature radius R7 of the object side of the fourth lens, the curvature radius R8 of the image side of the fourth lens and the total effective focal length f of the optical imaging lens satisfy: -1.30≤(R7+R8) / f≤-1.

12.

6. The optical imaging lens according to claim 1, characterized in that, The interval distance T12 on the optical axis between the first lens and the second lens, the interval distance T23 on the optical axis between the second lens and the third lens, and the interval distance T34 on the optical axis between the third lens and the fourth lens satisfy: 0.5<T12 / (T23+T34)≤1.

01.

7. The optical imaging lens according to claim 1, characterized in that The maximum effective radius DT11 of the object side of the first lens and the maximum effective radius DT21 of the object side of the second lens satisfy: 1.49≤DT21 / DT11≤2.

11.

8. The optical imaging lens according to claim 1, characterized in that, The maximum effective radius DT32 of the image side of the third lens and the axial distance SAG32 from the intersection of the image side of the third lens and the optical axis to the vertex of the effective radius of the image side of the third lens satisfy: -2.1<DT32 / SAG32≤-1.

61.

9. The optical imaging lens according to claim 1, characterized in that, The axial distance SAG41 from the intersection of the object side of the fourth lens and the optical axis to the vertex of the effective radius of the object side of the fourth lens, the axial distance SAG42 from the intersection of the image side of the fourth lens and the optical axis to the vertex of the effective radius of the image side of the fourth lens, and the axial distance SAG51 from the intersection of the object side of the fifth lens and the optical axis to the vertex of the effective radius of the object side of the fifth lens satisfy: 1.0 <( SAG41 + SAG51 ) / SAG42 ≤ 3.12。 10. The optical imaging lens according to claim 1, wherein The central thickness CT3 of the third lens on the optical axis and the edge thickness ET3 of the third lens satisfy: 2.5 < CT3 / ET3 ≤ 3.

32.

11. The optical imaging lens according to claim 1, wherein The distance BFL on the optical axis from the image side of the fifth lens to the imaging surface and the central thickness CT5 of the fifth lens on the optical axis satisfy: 0.8 < BFL / CT5 ≤ 3.60.

Images