Camera lens set

Abstract

The present application discloses a camera lens group, which includes, in order from the object side to the image side along the optical axis: a first lens with optical focal length; a first prism with a first reflection surface, the angle between the first reflection surface and the optical axis is 45°; an aperture; a second lens with optical focal length; a third lens with optical focal length; a fourth lens with optical focal length; and a second prism with a second reflection surface, the angle between the second reflection surface and the optical axis is 45°; the maximum field of view FOV of the camera lens group satisfies: FOV≥80.0°.

Description

Technical Field

[0001] The present application relates to the field of optical elements, and more specifically, to a camera lens assembly. Background Art

[0002] At present, with the rapid development of portable electronic products such as smart phones, the application of camera lenses is becoming more and more extensive. The camera lens group of most portable electronic products such as smart phones adopts a 3+1 combination configuration of a large image lens, a wide-angle lens, a telephoto lens and a TOF lens. Many of the telephoto lenses have 5x, 10x, and 15x optical zoom capabilities. However, if a conventional coaxial telephoto solution is used, the focal length of the telephoto lens will be greatly limited by the overall length of the camera lens group. If a telephoto lens that meets the requirements is to be achieved, it is bound to make it impossible for portable electronic products such as smart phones to achieve ultra-thin characteristics.

[0003] How to ensure that the camera lens has the characteristics of long focus, good imaging quality, etc., while also ensuring that the camera lens has the characteristics of ultra-thinness, miniaturization, and wide angle, is one of the difficult problems that many lens designers are currently trying to solve. Summary of the invention

[0004] On one hand, the present application provides such a camera lens group, which includes, from the object side to the image side along the optical axis, a first lens with optical power; a first prism with a first reflection surface, the angle between the first reflection surface and the optical axis is 45°; an aperture; a second lens with optical power; a third lens with optical power; a fourth lens with optical power; a second prism with a second reflection surface, the angle between the second reflection surface and the optical axis is 45°; and a fifth lens with optical power. The maximum field of view FOV of the camera lens group can meet the following requirements: FOV≥80.0°.

[0005] In one embodiment, there is at least one aspherical mirror surface from the object side surface of the first lens to the image side surface of the fifth lens.

[0006] In one embodiment, half of the maximum field of view angle Semi-FOV of the camera lens group and half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group ImgH may satisfy: 2.00mm<ImgH / tan 2 (Semi-FOV)<4.00mm.

[0007] In one embodiment, the effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens may satisfy: 2.00<f4 / f2<5.00.

[0008] In one embodiment, the combined focal length f34 of the third lens and the fourth lens and the spacing distance BFL between the fifth lens and the imaging surface of the camera lens group on the X2 optical axis may satisfy: 30.00<f34 / BFL<40.00.

[0009] In one embodiment, a curvature radius R1 of the object-side surface of the first lens and a curvature radius R4 of the image-side surface of the second lens may satisfy: 2.00<(R1+R4) / (R1-R4)<3.00.

[0010] In one embodiment, a curvature radius R3 of the object-side surface of the second lens and a curvature radius R6 of the image-side surface of the third lens may satisfy: 0.50<R6 / R3<2.50.

[0011] In one embodiment, the curvature radius R2 of the image-side surface of the first lens and the total effective focal length f of the camera lens group may satisfy: 1.00<R2 / f<5.00.

[0012] In one embodiment, the combined focal length f23 of the second lens and the third lens and the combined focal length f234 of the second lens, the third lens and the fourth lens may satisfy: 5.00<(f23+f234) / (f23-f234)<11.00.

[0013] In one embodiment, a center thickness CT2 of the second lens on the optical axis and a center thickness CT3 of the third lens on the optical axis may satisfy: 4.00<CT2 / CT3<10.00.

[0014] In one embodiment, a distance SAG11 from the intersection of the object side surface of the first lens and the optical axis to the vertex of the effective radius of the object side surface of the first lens on the optical axis and a distance SAG12 from the intersection of the image side surface of the first lens and the optical axis to the vertex of the effective radius of the image side surface of the first lens on the optical axis may satisfy: 2.00<SAG12 / SAG11<4.00.

[0015] In one embodiment, the maximum effective radius DT11 of the object-side surface of the first lens and the maximum effective radius DT12 of the image-side surface of the first lens may satisfy: 6.00<(DT11+DT12) / (DT11-DT12)<10.00.

[0016] On the other hand, the present application provides such a camera lens group, which includes, in order from the object side to the image side along the optical axis: a first lens with optical focal length; a first prism with a first reflection surface, the angle between the first reflection surface and the optical axis is 45°; an aperture; a second lens with optical focal length; a third lens with optical focal length; a fourth lens with optical focal length; a second prism with a second reflection surface, the angle between the second reflection surface and the optical axis is 45°; and a fifth lens with optical focal length. Half of the maximum field of view angle Semi-FOV of the camera lens group and half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group ImgH can satisfy: 2.00mm<ImgH / tan 2 (Semi-FOV)<4.00mm.

[0017] The present application provides a camera lens assembly having at least one beneficial effect of miniaturization, a large field of view, and good imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 A schematic structural diagram of an imaging lens assembly according to Embodiment 1 of the present application is shown;

[0020] FIG. 2A to FIG. 2C The astigmatism curve, distortion curve and relative illumination curve of the imaging lens assembly of Example 1 are respectively shown;

[0021] Figure 3 A schematic structural diagram of an imaging lens assembly according to Embodiment 2 of the present application is shown;

[0022] FIG. 4A to FIG. 4C The astigmatism curve, distortion curve and relative illumination curve of the imaging lens assembly of Example 2 are respectively shown;

[0023] Figure 5 A schematic structural diagram of an imaging lens assembly according to Embodiment 3 of the present application is shown;

[0024] FIG. 6A to FIG. 6C The astigmatism curve, distortion curve and relative illumination curve of the imaging lens group of Example 3 are respectively shown;

[0025] Figure 7 A schematic structural diagram of an imaging lens assembly according to Embodiment 4 of the present application is shown;

[0026] FIG. 8A to FIG. 8C The astigmatism curve, distortion curve and relative illumination curve of the imaging lens group of Example 4 are respectively shown;

[0027] Fig. 9 A schematic structural diagram of an imaging lens assembly according to Embodiment 5 of the present application is shown;

[0028] FIG. 10A to FIG. 10C The astigmatism curve, distortion curve and relative illumination curve of the imaging lens group of Example 5 are respectively shown;

[0029] Fig.11 A schematic structural diagram of an imaging lens assembly according to Embodiment 6 of the present application is shown; and

[0030] FIG. 12A to FIG. 12C The astigmatism curve, distortion curve and relative illumination curve of the imaging lens group of Example 6 are respectively shown. DETAILED DESCRIPTION

[0031] In order to better understand the present application, a more detailed description will be made of various aspects of the present application with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and are not intended to 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.

[0032] It should be noted that in this specification, the expressions of 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 teaching of the present application, the first lens discussed below may also be referred to as the second lens or the third lens, and the first prism may also be referred to as the second prism.

[0033] In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to the shapes of the spherical or aspherical surfaces shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

[0034] 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 is called the object side of the lens, and the surface of each lens closest to the imaging plane is called the image side of the lens.

[0035] It should also be understood that the terms "comprises", "including", "having", "includes" 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. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present application, "may" is used to mean "one or more embodiments of the present application". And, the term "exemplary" is intended to refer to an example or illustration.

[0036] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meaning as commonly understood by ordinary technicians in the field to which this application belongs. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having the same meaning as their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this article.

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] The features, principles and other aspects of the present application are described in detail below.

[0039] According to an exemplary embodiment of the present application, the camera lens group may include two prisms and five lenses with optical power, namely, a first lens, a first prism, a second lens, a third lens, a fourth lens, a second prism and a fifth lens. The two prisms and the five lenses are arranged in sequence from the object side to the image side along the optical axis, wherein the first lens and the first prism are arranged in sequence along the X1 optical axis; the second lens, the third lens and the fourth lens are arranged in sequence along the Y optical axis; the second prism and the fifth lens are arranged in sequence along the X2 optical axis. There may be a spacing distance between the first lens and the first prism along the X1 optical axis. There may be a spacing distance between any two adjacent elements from the first prism to the second prism along the Y optical axis. There may be a spacing distance between the second prism and the fifth lens along the X2 optical axis.

[0040] In an exemplary embodiment, the first lens may have positive optical power or negative optical power; the first prism may have a light incident surface, a first reflection surface, and a light exit surface, and the light emitted from the image side surface of the first lens may be incident from the light incident surface of the first prism, reflected by the first reflection surface, and emitted from the light exit surface of the first prism to the object side surface of the second lens; the second lens may have positive optical power or negative optical power; the third lens may have positive optical power or negative optical power; the fourth lens may have positive optical power or negative optical power; the second prism may have a light incident surface, a second reflection surface, and a light exit surface; the light emitted from the image side surface of the fourth lens may be incident on the light incident surface of the second prism, reflected by the second reflection surface, and emitted from the light exit surface of the second prism; the fifth lens may have positive optical power or negative optical power.

[0041] The first prism disposed between the first lens and the second lens can help to better improve the FOV of the system and expand the use range of the lens. The second prism disposed between the fourth lens and the fifth lens can ensure that the imaging direction is the same as the incident direction.

[0042] In an exemplary embodiment, the angle between the X1 optical axis and the Y optical axis may be 90°, the angle between the Y optical axis and the X2 optical axis may be 90°, the angle between the first reflective surface and the X1 optical axis may be 45°, and the angle between the second reflective surface and the X2 optical axis may be 45°.

[0043] In an exemplary embodiment, the camera lens assembly according to the present application can satisfy: FOV ≥ 80.0°, where FOV is the maximum field of view of the camera lens assembly. Satisfying FOV ≥ 80.0° allows more models of camera lens assemblies to be configured on mobile phones, greatly broadening the scope of use of the prism camera lens assembly.

[0044] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 2.00 mm < ImgH / tan 2 (Semi-FOV)<4.00mm, where Semi-FOV is half of the maximum field of view of the camera lens group, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group. More specifically, ImgH and Semi-FOV can further satisfy: 2.50mm<ImgH / tan 2 (Semi-FOV)<4.00mm. Satisfy 2.00mm<ImgH / tan 2 (Semi-FOV)<4.00mm, which allows the camera lens group to adapt to more environments.

[0045] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 2.00<f4 / f2<5.00, wherein f2 is the effective focal length of the second lens, and f4 is the effective focal length of the fourth lens. More specifically, f4 and f2 may further satisfy: 2.60<f4 / f2<4.70. Satisfying 2.00<f4 / f2<5.00 is beneficial for the system to support a larger FOV while ensuring that the light has a better convergence effect, which is beneficial for improving the quality of imaging.

[0046] In an exemplary embodiment, the camera lens group according to the present application may satisfy: 30.00<f34 / BFL<40.00, wherein f34 is the combined focal length of the third lens and the fourth lens, and BFL is the spacing distance between the fifth lens and the imaging surface of the camera lens group on the X2 optical axis. More specifically, f34 and BFL may further satisfy: 30.20<f34 / BFL<38.00. Satisfying 30.00<f34 / BFL<40.00 can avoid the problem of too short back focus and being unfavorable for later lens barrel processing while improving image quality through the third lens and the fourth lens, and at the same time avoid the problem of too long back focus causing the overall lateral distance of the system to be too long.

[0047] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 2.00<(R1+R4) / (R1-R4)<3.00, wherein R1 is the radius of curvature of the object side of the first lens, and R4 is the radius of curvature of the image side of the second lens. More specifically, R1 and R4 may further satisfy: 2.50<(R1+R4) / (R1-R4)<2.90. Satisfying 2.00<(R1+R4) / (R1-R4)<3.00 can not only help improve the FOV of the system to ensure imaging quality, but also help reduce the sensitivity of the lens to make it have better processability.

[0048] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 0.50<R6 / R3<2.50, wherein R3 is the radius of curvature of the object side of the second lens, and R6 is the radius of curvature of the image side of the third lens. More specifically, R6 and R3 may further satisfy: 0.70<R6 / R3<2.30. Satisfying 0.50<R6 / R3<2.50 is not only conducive to improving the system's ability to correct aberrations, but also can appropriately control the sensitivity of the second lens and the third lens to ensure that they have better processability.

[0049] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 1.00<R2 / f<5.00, where R2 is the radius of curvature of the image side surface of the first lens, and f is the total effective focal length of the camera lens assembly. More specifically, R2 and f may further satisfy: 1.60<R2 / f<4.60. When 1.00<R2 / f<5.00 is satisfied, the system optical power may be more reasonably allocated to avoid excessive concentration of the system optical power on the first lens, which is beneficial to reducing the sensitivity of the first lens.

[0050] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 5.00<(f23+f234) / (f23-f234)<11.00, wherein f23 is the combined focal length of the second lens and the third lens, and f234 is the combined focal length of the second lens, the third lens, and the fourth lens. More specifically, f23 and f234 may further satisfy: 5.80<(f23+f234) / (f23-f234)<11.00. Satisfying 5.00<(f23+f234) / (f23-f234)<11.00 is conducive to a more reasonable distribution of the optical power of the system, and has a more obvious effect on reducing sensitivity and improving lens processability.

[0051] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 4.00<CT2 / CT3<10.00, wherein CT2 is the center thickness of the second lens on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. More specifically, CT2 and CT3 may further satisfy: 4.60<CT2 / CT3<9.40. Satisfying 4.00<CT2 / CT3<10.00 is beneficial to improving system aberrations while avoiding excessive system size, and is also beneficial to the correction of system distortion.

[0052] In an exemplary embodiment, the camera lens group according to the present application may satisfy: 2.00<SAG12 / SAG11<4.00, wherein SAG11 is the spacing distance from the intersection of the object side surface of the first lens and the optical axis to the effective radius vertex of the object side surface of the first lens on the optical axis, and SAG12 is the spacing distance from the intersection of the image side surface of the first lens and the optical axis to the effective radius vertex of the image side surface of the first lens on the optical axis. More specifically, SAG12 and SAG11 may further satisfy: 2.50<SAG12 / SAG11<3.80. Satisfying 2.00<SAG12 / SAG11<4.00 can ensure that while improving the system FOV, the first lens is prevented from being too sensitive and the risk of ghosting caused by the first lens is avoided.

[0053] In an exemplary embodiment, the camera lens assembly according to the present application may satisfy: 6.00<(DT11+DT12) / (DT11-DT12)<10.00, wherein DT11 is the maximum effective radius of the object side of the first lens, and DT12 is the maximum effective radius of the image side of the first lens. More specifically, DT11 and DT12 may further satisfy: 6.00<(DT11+DT12) / (DT11-DT12)<9.60. Satisfying 6.00<(DT11+DT12) / (DT11-DT12)<10.00 can ensure that while improving the system FOV, the problems of increased sensitivity of the first lens, difficulty in processing, etc. are avoided, and it is also beneficial to reduce the size of the first lens.

[0054] In an exemplary embodiment, the camera lens group according to the present application also includes an aperture arranged between the first prism and the second lens. Optionally, the above-mentioned camera lens group may also include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface. The present application proposes a camera lens group with the characteristics of miniaturization, large field of view, ultra-thinness, etc. The camera lens group according to the above-mentioned embodiment of the present application may use multiple lenses, such as the five lenses and two prisms described above. By reasonably allocating the optical focal length, surface shape, center thickness of each lens, axial spacing between each lens, position of the reflective surface, and spacing distance between the prism and the lens, etc., the incident light can be effectively converged, the total length of the camera lens group can be reduced, and the processability of the camera lens group can be improved, so that the camera lens group is more conducive to production and processing.

[0055] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the mirror surfaces from the object side of the first lens to the image side of the fifth lens is an aspherical mirror surface. The characteristic of the aspherical lens is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens with a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has the advantages of improving distortion aberration and improving astigmatism aberration. After adopting an aspherical lens, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens and the fifth lens is an aspherical mirror surface. Optionally, the object side and image side of each lens in the first lens, the second lens, the third lens, the fourth lens and the fifth lens are all aspherical mirror surfaces.

[0056] However, it should be understood by those skilled in the art that, without departing from the technical solution claimed in the present application, the number of lenses constituting the camera lens group 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 embodiments, the camera lens group is not limited to including five lenses. If necessary, the camera lens group may also include other numbers of lenses.

[0057] Specific embodiments of the imaging lens assembly applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0058] Example 1

[0059] The following reference Figures 1 to 2C An imaging lens group according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of an imaging lens assembly according to Embodiment 1 of the present application is shown.

[0060] like Figure 1 As shown, the camera lens group includes, from the object side to the image side, a first lens E1 and a first prism E2 along the X1 optical axis; an aperture STO, a second lens E3, a third lens E4, a fourth lens E5 and a second prism E6 along the Y optical axis; and a fifth lens E7, a filter E8 and an imaging surface S19 along the X2 optical axis.

[0061] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The first prism E2 has a light incident surface S3, a first reflection surface S4, and a light exit surface S5. The second lens E3 has positive optical power, and its object side surface S6 is convex, and its image side surface S7 is convex. The third lens E4 has negative optical power, and its object side surface S8 is convex, and its image side surface S9 is concave. The fourth lens E5 has positive optical power, and its object side surface S10 is convex, and its image side surface S11 is convex. The second prism E6 has a light incident surface S12, a second reflection surface S13, and a light exit surface S14. The fifth lens E7 has negative optical power, and its object side surface S15 is concave, and its image side surface S16 is convex. The filter E8 has an object side surface S17 and an image side surface S18. The light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0062] Table 1 shows the basic parameters of the imaging lens assembly of Example 1, wherein the units of the curvature radius, thickness / distance and focal length are all millimeters (mm).

[0063]

[0064] Table 1

[0065] In this example, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the camera lens group is 2.30 mm, half of the maximum field of view Semi-FOV of the camera lens group is 43.0°, the aperture value Fno of the camera lens group is 3.00, and the total effective focal length f of the camera lens group is 2.74 mm.

[0066] In Example 1, the object side surface and the image side surface of any lens among the first lens E1 to the fifth lens E7 are both aspherical surfaces, and the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0067]

[0068] Wherein, x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at a height of h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1 / R (i.e., the paraxial curvature c is the reciprocal of the curvature radius R in Table 1 above); k is the cone coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the high-order coefficients A that can be used for each aspheric mirror surface S1-S2, S6-S11 and S15-S16 in Example 1 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A 20 .

[0069] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.4689E-01 -4.3885E-02 -6.4457E-02 1.2838E-01 -1.1797E-01 6.7862E-02 -2.5811E-02 6.4814E-03 -1.0320E-03 S2 1.6417E-01 -5.5602E-03 4.9206E-02 -6.8228E-01 1.9404E+00 -2.9080E+00 2.6761E+00 -1.5643E+00 5.6769E-01 S6 3.1152E-02 -3.1187E-01 6.2339E+00 -6.8716E+01 4.8395E+02 -2.2680E+03 7.2306E+03 -1.5739E+04 2.3014E+04 S7 -1.9198E-02 4.7759E-01 -5.1289E+00 3.3349E+01 -1.3393E+02 3.6379E+02 -6.9249E+02 9.2546E+02 -8.4923E+02 S8 6.2582E-02 6.7738E-01 -5.4116E+00 2.4885E+01 -7.2257E+01 1.4316E+02 -1.9979E+02 1.9355E+02 -1.2271E+02 S9 -2.3268E-02 1.1084E+00 -5.1677E+00 1.3610E+01 -2.3057E+01 2.9055E+01 -3.3950E+01 3.7353E+01 -3.0020E+01 S10 -2.2444E-01 1.2173E+00 -4.5305E+00 1.5541E+01 -5.5865E+01 1.6812E+02 -3.5989E+02 5.2229E+02 -5.0180E+02 S11 -1.1674E-01 1.9853E-01 -1.0456E+00 5.7616E+00 -2.3306E+01 6.4185E+01 -1.2240E+02 1.6338E+02 -1.4975E+02 S15 -1.0026E-01 4.8637E-01 -1.3350E+00 2.4407E+00 -2.9951E+00 2.4660E+00 -1.3649E+00 5.0242E-01 -1.1860E-01 S16 -1.9641E-01 7.3050E-01 -1.6195E+00 2.4785E+00 -2.6121E+00 1.9035E+00 -9.6651E-01 3.4149E-01 -8.2423E-02

[0070] Table 2

[0071] Figure 2A The astigmatism curve of the imaging lens unit of Example 1 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 2B The distortion curve of the camera lens group of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2C The relative illumination curve of the camera lens assembly of Example 1 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 2A to FIG. 2C It can be seen that the camera lens group provided in Example 1 can achieve good imaging quality.

[0072] Example 2

[0073] The following reference Figures 3 to 4C The imaging lens assembly according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, some descriptions similar to Embodiment 1 will be omitted. Figure 3A schematic structural diagram of an imaging lens assembly according to Embodiment 2 of the present application is shown.

[0074] like Figure 3 As shown, the camera lens group includes, from the object side to the image side, a first lens E1 and a first prism E2 along the X1 optical axis; an aperture STO, a second lens E3, a third lens E4, a fourth lens E5 and a second prism E6 along the Y optical axis; and a fifth lens E7, a filter E8 and an imaging surface S19 along the X2 optical axis.

[0075] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The first prism E2 has a light incident surface S3, a first reflection surface S4, and a light exit surface S5. The second lens E3 has positive optical power, and its object side surface S6 is convex, and its image side surface S7 is convex. The third lens E4 has negative optical power, and its object side surface S8 is convex, and its image side surface S9 is concave. The fourth lens E5 has positive optical power, and its object side surface S10 is convex, and its image side surface S11 is concave. The second prism E6 has a light incident surface S12, a second reflection surface S13, and a light exit surface S14. The fifth lens E7 has negative optical power, and its object side surface S15 is concave, and its image side surface S16 is convex. The filter E8 has an object side surface S17 and an image side surface S18. The light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0076] In this example, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the camera lens group is 2.30 mm, half of the maximum field of view Semi-FOV of the camera lens group is 43.5°, the aperture value Fno of the camera lens group is 2.90, and the total effective focal length f of the camera lens group is 2.98 mm.

[0077] Table 3 shows the basic parameters of the camera lens assembly of Example 2, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 4 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 2, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0078]

[0079] Table 3

[0080] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.6212E-01 -1.2040E-01 1.0360E-01 -8.7366E-02 6.1595E-02 -3.2980E-02 1.2755E-02 -3.4205E-03 6.0084E-04 S2 1.8351E-01 -1.1361E-01 1.3498E-01 -1.8448E-01 2.1588E-01 -1.9227E-01 1.2661E-01 -5.9802E-02 1.9054E-02 S6 2.6771E-02 -1.5268E-01 2.8739E+00 -2.8501E+01 1.8250E+02 -7.8287E+02 2.2976E+03 -4.6265E+03 6.2857E+03 S7 -2.1351E-02 1.8637E-01 -7.5370E-02 -5.5191E+00 4.7587E+01 -2.0042E+02 5.0919E+02 -8.3196E+02 8.8299E+02 S8 7.7796E-02 4.5140E-01 -3.8539E+00 1.7309E+01 -4.3928E+01 6.3682E+01 -4.2129E+01 -1.5028E+01 4.9834E+01 S9 -8.0225E-02 2.1792E+00 -1.3171E+01 4.6142E+01 -1.0047E+02 1.3388E+02 -9.4267E+01 4.8572E+00 4.7514E+01 S10 -3.2781E-01 2.5467E+00 -1.1649E+01 2.9539E+01 -2.6981E+01 -7.1696E+01 2.9949E+02 -5.1902E+02 5.2598E+02 S11 -1.1916E-01 1.9963E-01 -4.4556E-01 -3.5371E-02 4.5393E+00 -1.7911E+01 3.7473E+01 -4.8006E+01 3.9600E+01 S15 -6.8132E-02 1.7316E-01 2.3506E-02 -7.6606E-01 1.6593E+00 -1.9836E+00 1.5344E+00 -7.9664E-01 2.7587E-01 S16 -2.3758E-01 8.9891E-01 -1.6893E+00 2.1370E+00 -1.9399E+00 1.2774E+00 -6.0867E-01 2.0741E-01 -4.9252E-02

[0081] Table 4

[0082] Figure 4A The astigmatism curve of the imaging lens unit of Example 2 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 4BThe distortion curve of the camera lens group of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4C The relative illumination curve of the camera lens assembly of Example 2 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 4A to FIG. 4C It can be seen that the camera lens group provided in Example 2 can achieve good imaging quality.

[0083] Example 3

[0084] The following reference Figures 5 to 6C An imaging lens group according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an imaging lens assembly according to Example 3 of the present application is shown.

[0085] like Figure 5 As shown, the camera lens group includes, from the object side to the image side, a first lens E1 and a first prism E2 along the X1 optical axis; an aperture STO, a second lens E3, a third lens E4, a fourth lens E5 and a second prism E6 along the Y optical axis; and a fifth lens E7, a filter E8 and an imaging surface S19 along the X2 optical axis.

[0086] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The first prism E2 has a light incident surface S3, a first reflection surface S4, and a light exit surface S5. The second lens E3 has positive optical power, and its object side surface S6 is convex, and its image side surface S7 is convex. The third lens E4 has negative optical power, and its object side surface S8 is convex, and its image side surface S9 is concave. The fourth lens E5 has positive optical power, and its object side surface S10 is convex, and its image side surface S11 is concave. The second prism E6 has a light incident surface S12, a second reflection surface S13, and a light exit surface S14. The fifth lens E7 has positive optical power, and its object side surface S15 is concave, and its image side surface S16 is convex. The filter E8 has an object side surface S17 and an image side surface S18. The light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0087] In this example, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the camera lens group is 2.30 mm, half of the maximum field of view Semi-FOV of the camera lens group is 42.2°, the aperture value Fno of the camera lens group is 2.85, and the total effective focal length f of the camera lens group is 3.03 mm.

[0088] Table 5 shows the basic parameters of the camera lens assembly of Example 3, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 6 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 3, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0089]

[0090]

[0091] Table 5

[0092] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.5877E-01 -1.1237E-01 9.0792E-02 -7.1240E-02 4.6729E-02 -2.3662E-02 8.8918E-03 -2.3842E-03 4.2896E-04 S2 2.0010E-01 -2.6497E-01 7.7797E-01 -1.8190E+00 2.9238E+00 -3.2117E+00 2.4064E+00 -1.2076E+00 3.8764E-01 S6 4.8301E-02 -8.2166E-01 1.2984E+01 -1.1899E+02 7.0165E+02 -2.7791E+03 7.5523E+03 -1.4119E+04 1.7853E+04 S7 -9.0970E-03 5.1414E-02 9.2128E-01 -1.0609E+01 6.4294E+01 -2.3358E+02 5.4079E+02 -8.2065E+02 8.1488E+02 S8 1.1347E-01 -9.5189E-02 1.0560E+00 -1.0659E+01 6.2028E+01 -2.0820E+02 4.2924E+02 -5.5575E+02 4.4128E+02 S9 -1.1340E-01 2.4084E+00 -1.3654E+01 4.3085E+01 -7.4430E+01 4.3766E+01 8.5366E+01 -2.1469E+02 2.0975E+02 S10 -3.5895E-01 2.8691E+00 -1.2504E+01 2.4838E+01 1.8488E+01 -2.4544E+02 6.9471E+02 -1.1021E+03 1.0909E+03 S11 -1.3316E-01 4.8362E-01 -3.1011E+00 1.5102E+01 -5.1122E+01 1.1656E+02 -1.7525E+02 1.6614E+02 -8.7388E+01 S15 -7.8539E-02 1.2522E-01 7.6581E-01 -3.3574E+00 6.4551E+00 -7.5479E+00 5.8405E+00 -3.0619E+00 1.0778E+00 S16 -3.7791E-01 1.8396E+00 -3.9540E+00 5.3970E+00 -5.1028E+00 3.4396E+00 -1.6649E+00 5.7438E-01 -1.3784E-01

[0093] Table 6

[0094] Fig. 6A The astigmatism curve of the imaging lens unit of Example 3 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 6B The distortion curve of the camera lens group of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 6C The relative illumination curve of the camera lens assembly of Example 3 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 6A to FIG. 6C It can be seen that the camera lens group provided in Example 3 can achieve good imaging quality.

[0095] Example 4

[0096] The following reference Figures 7 to 8C An imaging lens group according to Example 4 of the present application is described. Figure 7 A schematic structural diagram of an imaging lens assembly according to Example 4 of the present application is shown.

[0097] like Figure 7 As shown, the camera lens group includes, from the object side to the image side, a first lens E1 and a first prism E2 along the X1 optical axis; an aperture STO, a second lens E3, a third lens E4, a fourth lens E5 and a second prism E6 along the Y optical axis; and a fifth lens E7, a filter E8 and an imaging surface S19 along the X2 optical axis.

[0098] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The first prism E2 has a light incident surface S3, a first reflection surface S4, and a light exit surface S5. The second lens E3 has positive optical power, and its object side surface S6 is convex, and its image side surface S7 is convex. The third lens E4 has negative optical power, and its object side surface S8 is concave, and its image side surface S9 is concave. The fourth lens E5 has positive optical power, and its object side surface S10 is convex, and its image side surface S11 is convex. The second prism E6 has a light incident surface S12, a second reflection surface S13, and a light exit surface S14. The fifth lens E7 has negative optical power, and its object side surface S15 is concave, and its image side surface S16 is convex. The filter E8 has an object side surface S17 and an image side surface S18. The light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0099] In this example, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the camera lens group is 2.30 mm, half of the maximum field of view Semi-FOV of the camera lens group is 42.5°, the aperture value Fno of the camera lens group is 2.60, and the total effective focal length f of the camera lens group is 3.01 mm.

[0100] Table 7 shows the basic parameters of the camera lens assembly of Example 4, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 8 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above-mentioned Example 1.

[0101]

[0102] Table 7

[0103] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.5856E-01 -1.0765E-01 8.3060E-02 -6.5949E-02 4.6922E-02 -2.6141E-02 1.0526E-02 -2.9088E-03 5.2066E-04 S2 1.7983E-01 -1.2141E-01 1.8284E-01 -3.1729E-01 4.1703E-01 -3.7377E-01 2.2482E-01 -8.9401E-02 2.2541E-02 S6 3.3858E-02 -2.7206E-01 3.7416E+00 -2.8691E+01 1.4186E+02 -4.7078E+02 1.0716E+03 -1.6780E+03 1.7777E+03 S7 -3.6790E-02 4.0636E-01 -1.7553E+00 3.8311E+00 4.7977E+00 -5.2717E+01 1.5109E+02 -2.4171E+02 2.3860E+02 S8 5.9223E-02 6.7131E-01 -4.6746E+00 1.8404E+01 -4.3169E+01 6.1929E+01 -5.1805E+01 1.8934E+01 4.7229E+00 S9 -1.6862E-01 3.3096E+00 -2.1142E+01 8.1335E+01 -2.0494E+02 3.5044E+02 -4.1047E+02 3.2440E+02 -1.6519E+02 S10 -3.7167E-01 3.5813E+00 -2.0050E+01 6.8196E+01 -1.4286E+02 1.6926E+02 -5.6476E+01 -1.4598E+02 2.5471E+02 S11 -1.0820E-01 1.0041E-01 2.9842E-01 -4.8823E+00 2.7423E+01 -9.1418E+01 1.9744E+02 -2.8322E+02 2.6848E+02 S15 -2.2396E-01 1.1987E+00 -2.8637E+00 4.0263E+00 -3.6443E+00 2.1481E+00 -7.7876E-01 1.3212E-01 1.4709E-02 S16 -3.6182E-01 1.6718E+00 -3.3634E+00 4.1574E+00 -3.4874E+00 2.0639E+00 -8.7347E-01 2.6330E-01 -5.5278E-02

[0104] Table 8

[0105] Fig. 8A The astigmatism curve of the imaging lens unit of Example 4 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 8B The distortion curve of the camera lens group of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 8C The relative illumination curve of the camera lens assembly of Example 4 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 8A to FIG. 8C It can be seen that the camera lens group provided in Example 4 can achieve good imaging quality.

[0106] Example 5

[0107] The following reference Figures 9 to 10C An imaging lens group according to Example 5 of the present application is described. Fig. 9 A schematic structural diagram of an imaging lens assembly according to Example 5 of the present application is shown.

[0108] like Fig. 9 As shown, the camera lens group includes, from the object side to the image side, a first lens E1 and a first prism E2 along the X1 optical axis; an aperture STO, a second lens E3, a third lens E4, a fourth lens E5 and a second prism E6 along the Y optical axis; and a fifth lens E7, a filter E8 and an imaging surface S19 along the X2 optical axis.

[0109] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The first prism E2 has a light incident surface S3, a first reflection surface S4, and a light exit surface S5. The second lens E3 has positive optical power, and its object side surface S6 is convex, and its image side surface S7 is convex. The third lens E4 has negative optical power, and its object side surface S8 is concave, and its image side surface S9 is concave. The fourth lens E5 has positive optical power, and its object side surface S10 is concave, and its image side surface S11 is convex. The second prism E6 has a light incident surface S12, a second reflection surface S13, and a light exit surface S14. The fifth lens E7 has negative optical power, and its object side surface S15 is concave, and its image side surface S16 is convex. The filter E8 has an object side surface S17 and an image side surface S18. The light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0110] In this example, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the camera lens group is 2.30 mm, half of the maximum field of view Semi-FOV of the camera lens group is 40.0°, the aperture value Fno of the camera lens group is 2.30, and the total effective focal length f of the camera lens group is 3.13 mm.

[0111] Table 9 shows the basic parameters of the camera lens assembly of Example 5, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 10 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 5, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0112]

[0113]

[0114] Table 9

[0115] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.5728E-01 -8.4645E-02 2.3438E-02 2.5011E-02 -4.1964E-02 3.1576E-02 -1.4645E-02 4.3753E-03 -8.2065E-04 S2 1.7118E-01 -9.0216E-02 8.2330E-02 -1.3775E-01 2.3471E-01 -2.8362E-01 2.2936E-01 -1.2185E-01 4.0778E-02 S6 3.1723E-02 -1.9038E-01 2.2582E+00 -1.4967E+01 6.4335E+01 -1.8633E+02 3.7107E+02 -5.0917E+02 4.7301E+02 S7 -1.3390E-02 1.6043E-01 -7.9758E-01 3.6487E+00 -9.5590E+00 1.5255E+01 -1.5764E+01 1.0846E+01 -5.0031E+00 S8 9.8414E-02 1.7302E-01 -1.4778E+00 5.2903E+00 -8.0704E+00 1.2631E+00 1.4332E+01 -2.3629E+01 1.7999E+01 S9 -1.2756E-01 1.8544E+00 -7.5371E+00 1.3796E+01 3.8591E-01 -5.3528E+01 1.1391E+02 -1.2114E+02 7.2768E+01 S10 -3.4405E-01 2.1952E+00 -6.5263E+00 3.0416E+00 4.2146E+01 -1.5336E+02 2.7477E+02 -2.9918E+02 2.0665E+02 S11 -1.1680E-01 2.0339E-01 -6.2515E-01 1.9906E+00 -5.6305E+00 1.1903E+01 -1.8295E+01 2.0152E+01 -1.5263E+01 S15 -2.6770E-01 1.4637E+00 -3.7256E+00 5.4934E+00 -5.1876E+00 3.2196E+00 -1.2769E+00 2.8303E-01 -1.2338E-02 S16 -4.0283E-01 2.0015E+00 -4.2153E+00 5.3079E+00 -4.4459E+00 2.5872E+00 -1.0628E+00 3.0742E-01 -6.1276E-02

[0116] Table 10

[0117] Fig. 10A The astigmatism curve of the imaging lens unit of Example 5 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig. 10B The distortion curve of the camera lens group of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 10C The relative illumination curve of the camera lens assembly of Example 5 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 10A to FIG. 10C It can be seen that the camera lens group provided in Example 5 can achieve good imaging quality.

[0118] Example 6

[0119] The following reference Figures 11 to 12C An imaging lens group according to Example 6 of the present application is described. Fig.11 A schematic structural diagram of an imaging lens assembly according to Example 6 of the present application is shown.

[0120] like Fig.11 As shown, the camera lens group includes, from the object side to the image side, a first lens E1 and a first prism E2 along the X1 optical axis; an aperture STO, a second lens E3, a third lens E4, a fourth lens E5 and a second prism E6 along the Y optical axis; and a fifth lens E7, a filter E8 and an imaging surface S19 along the X2 optical axis.

[0121] The first lens E1 has negative optical power, and its object side surface S1 is concave, and its image side surface S2 is concave. The first prism E2 has a light incident surface S3, a first reflection surface S4, and a light exit surface S5. The second lens E3 has positive optical power, and its object side surface S6 is convex, and its image side surface S7 is convex. The third lens E4 has negative optical power, and its object side surface S8 is concave, and its image side surface S9 is concave. The fourth lens E5 has positive optical power, and its object side surface S10 is convex, and its image side surface S11 is convex. The second prism E6 has a light incident surface S12, a second reflection surface S13, and a light exit surface S14. The fifth lens E7 has negative optical power, and its object side surface S15 is concave, and its image side surface S16 is concave. The filter E8 has an object side surface S17 and an image side surface S18. The light from the object passes through each surface S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0122] In this example, half of the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the camera lens group is 2.93 mm, half of the maximum field of view Semi-FOV of the camera lens group is 41.0°, the aperture value Fno of the camera lens group is 2.50, and the total effective focal length f of the camera lens group is 4.02 mm.

[0123] Table 11 shows the basic parameters of the camera lens assembly of Example 6, wherein the units of the radius of curvature, thickness / distance and focal length are all in millimeters (mm). Table 12 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 6, wherein the surface type of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0124]

[0125] Table 11

[0126] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 7.2373E-02 -1.8284E-02 -3.2861E-03 7.9149E-03 -5.1531E-03 2.0073E-03 -5.1371E-04 8.7029E-05 -9.4056E-06 S2 7.6664E-02 -1.4253E-02 -3.7617E-03 3.8188E-03 1.4132E-03 -3.3741E-03 2.1895E-03 -7.7319E-04 1.5975E-04 S6 1.3861E-02 -3.0411E-02 2.8579E-01 -1.4069E+00 4.4988E+00 -9.6771E+00 1.4286E+01 -1.4502E+01 9.9482E+00 S7 -1.4878E-02 6.2765E-02 -1.1533E-01 2.1358E-01 -1.7769E-01 -1.1994E-01 4.4000E-01 -4.7984E-01 2.8812E-01 S8 3.6592E-02 1.4535E-01 -7.0226E-01 1.8273E+00 -2.7834E+00 2.6670E+00 -1.6608E+00 6.7123E-01 -1.7033E-01 S9 -8.7026E-02 8.5208E-01 -2.7617E+00 4.8859E+00 -4.6922E+00 1.8080E+00 8.5373E-01 -1.3585E+00 6.7872E-01 S10 -1.9912E-01 9.8555E-01 -2.6109E+00 3.5173E+00 -1.0963E+00 -3.8359E+00 6.7567E+00 -5.5740E+00 2.7123E+00 S11 -6.2824E-02 1.0987E-01 -3.0513E-01 7.0938E-01 -1.1807E+00 1.3059E+00 -9.3701E-01 4.1596E-01 -9.7730E-02 S15 -1.0198E-01 3.0818E-01 -4.1677E-01 3.0778E-01 -1.2913E-01 2.3610E-02 4.5807E-03 -4.0508E-03 1.1549E-03 S16 -1.6641E-01 3.9486E-01 -4.4672E-01 3.0427E-01 -1.3685E-01 4.2247E-02 -9.0566E-03 1.3366E-03 -1.3165E-04

[0127] Table 12

[0128] Fig. 12AThe astigmatism curve of the imaging lens unit of Example 6 is shown, which indicates the meridional field curvature and the sagittal field curvature. Fig. 12B The distortion curve of the camera lens group of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 12C The relative illumination curve of the camera lens assembly of Example 6 is shown, which indicates the relative illumination values ​​corresponding to different image heights. FIG. 12A to FIG. 12C It can be seen that the camera lens group provided in Example 6 can achieve good imaging quality.

[0129] In summary, Examples 1 to 6 respectively satisfy the relationships shown in Table 13.

[0130] Conditional / Example 1 2 3 4 5 6 <![CDATA[ImgH / tan 2 (Semi-FOV)(mm)]]> 2.64 2.55 2.79 2.74 3.27 3.88 f4 / f2 2.69 2.92 3.26 3.81 4.59 4.09 f34 / BFL 37.81 30.39 35.94 34.93 37.11 34.01 (R1+R4) / (R1-R4) 2.66 2.80 2.78 2.60 2.53 2.54 R6 / R3 0.73 0.87 0.99 1.56 2.21 1.91 R2 / f 1.71 2.16 2.27 2.86 4.41 4.51 (f23+f234) / (f23-f234) 5.85 6.07 6.86 8.47 10.95 9.13 CT2 / CT3 4.71 4.87 5.00 5.41 7.02 9.34 SAG12 / SAG11 3.49 3.52 3.77 3.10 2.54 2.65 (DT11+DT12) / (DT11-DT12) 6.12 6.87 7.30 7.60 9.07 9.52 FOV(°) 86.0 87.0 84.5 85.0 80.0 82.0

[0131] Table 13

[0132] The present application also provides an imaging device, whose electronic photosensitive element can be a photosensitive 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 in a mobile electronic device such as a mobile phone. The imaging device is equipped with the above-described camera lens group.

[0133] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a 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 above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. Camera lens set, It is characterized in that Along the optical axis from the object side to the image side, they include: The first lens has a negative optical power, and its object side surface is concave and its image side surface is concave; a first prism having a first reflecting surface, wherein the angle between the first reflecting surface and the optical axis is 45°; Aperture; The second lens has positive power, and its object-side surface is convex and its image-side surface is convex; The third lens has a negative optical power and its image side surface is concave; a fourth lens having positive refractive power; a second prism having a second reflecting surface, wherein the angle between the second reflecting surface and the optical axis is 45°; and a fifth lens having positive or negative refractive power, whose object side surface is concave; Half of the maximum field of view angle Semi-FOV of the camera lens group and half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group ImgH satisfy: 2.50 mm<ImgH / tan 2 (Semi-FOV)≤3.88mm; The number of lenses having optical power in the imaging lens group is five.

2. The imaging lens assembly according to claim 1, It is characterized in that The effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens satisfy: 2.69≤f4 / f2≤4.

59.

3. The imaging lens assembly according to claim 1, It is characterized in that The combined focal length f34 of the third lens and the fourth lens and the spacing distance BFL from the fifth lens to the imaging surface of the camera lens group on the optical axis satisfy: 30.39≤f34 / BFL≤37.

81.

4. The imaging lens assembly according to claim 1, It is characterized in that A curvature radius R1 of the object-side surface of the first lens and a curvature radius R4 of the image-side surface of the second lens satisfy: 2.50<(R1+R4) / (R1-R4)≤2.

80.

5. The imaging lens assembly according to claim 1, It is characterized in that A curvature radius R3 of the object-side surface of the second lens and a curvature radius R6 of the image-side surface of the third lens satisfy: 0.70<R6 / R3≤2.

21.

6. The imaging lens assembly according to claim 1, It is characterized in that The curvature radius R2 of the image side surface of the first lens and the total effective focal length f of the camera lens group satisfy the following: 1.71≤R2 / f≤4.

51.

7. The imaging lens assembly according to claim 1, It is characterized in that The combined focal length f23 of the second lens and the third lens and the combined focal length f234 of the second lens, the third lens and the fourth lens satisfy: 5.80<(f23+f234) / (f23-f234)<11.

00.

8. The imaging lens assembly according to claim 1, It is characterized in that A center thickness CT2 of the second lens on the optical axis and a center thickness CT3 of the third lens on the optical axis satisfy: 4.71≤CT2 / CT3≤9.

34.

9. The imaging lens assembly according to claim 1, It is characterized in that The distance SAG11 between the intersection of the object side surface of the first lens and the optical axis and the vertex of the effective radius of the object side surface of the first lens on the optical axis and the distance SAG12 between the intersection of the image side surface of the first lens and the optical axis and the vertex of the effective radius of the image side surface of the first lens on the optical axis satisfy: 2.50<SAG12 / SAG11<3.

80.

10. The imaging lens assembly according to claim 1, It is characterized in that The maximum effective radius DT11 of the object-side surface of the first lens and the maximum effective radius DT12 of the image-side surface of the first lens satisfy: 6.12≤(DT11+DT12) / (DT11-DT12)≤9.52.

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