Camera lens set

Abstract

The present application discloses a camera lens group, which includes: a first lens, a second lens, a third lens, a fourth lens and a fifth lens in order from the object side to the image side along the optical axis. The first lens has positive optical power, and its object side surface is convex, and its image side surface is concave; the second lens has negative optical power, and its object side surface is convex, and its image side surface is concave; the third lens has optical power; the fourth lens has positive optical power; the fifth lens has negative optical power, and its object side surface is convex, and its image side surface is concave; and the wavelength λn corresponding to 50% transmittance of the camera lens group satisfies (λn‑700)(λn‑800)≤0.

Description

Technical Field

[0001] The present application relates to a camera lens group, and more specifically, the present application relates to a camera lens group including five lenses and capable of being applied to near-infrared scenes. Background Art

[0002] Infrared camera lenses refer to devices that form images by receiving infrared light reflected by the subject through a photosensitive chip. At present, infrared lenses have been gradually applied to several infrared application scenarios such as day and night monitoring, fog-penetrating photography, and laser night vision. Infrared camera lenses can be divided into near-infrared lenses and far-infrared lenses according to the different wavelength ranges they target.

[0003] At present, most near-infrared lenses use spherical lenses, which makes it difficult to improve their optical distortion. At the same time, when working in bright environments, current near-infrared lenses are easily interfered by non-near-infrared light such as visible light, or have the disadvantage of low infrared transmittance, which cannot meet the imaging requirements of the near-infrared band. Summary of the invention

[0004] The present application provides a camera lens group that can at least solve or partially solve at least one of the above-mentioned shortcomings in the prior art, for example, a camera lens group that can be applied to near-infrared scenes.

[0005] On the one 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, a second lens, a third lens, a fourth lens and a fifth lens. Among them, the first lens may have positive optical power, its object side surface may be convex, and its image side surface may be concave; the second lens may have negative optical power, its object side surface may be convex, and its image side surface may be concave; the third lens has positive optical power or negative optical power; the fourth lens may have positive optical power; and the fifth lens may have negative optical power, its object side surface may be convex, and its image side surface may be concave. Among them, the wavelength value λn corresponding to 50% transmittance of the camera lens group may satisfy (λn-700)(λn-800)≤0.

[0006] In one embodiment, a maximum value Vn of the chromatic aberration of each of the first to fifth lenses may satisfy Vn>1000.

[0007] In one embodiment, at least one of the first to fifth lenses may be formed of an infrared single-band material, and the operating band of the camera lens group may be about 700nm to about 990nm. Further, the operating band of the camera lens group may be about 850nm to about 940nm.

[0008] In one embodiment, the total effective focal length f of the camera lens assembly and the effective focal length f1 of the first lens may satisfy 1<f / f1<1.5.

[0009] In one embodiment, the maximum effective radius DT11 of the object-side surface of the first lens and the maximum effective radius DT52 of the image-side surface of the fifth lens may satisfy 1.5<DT52 / (DT11×2)<2.

[0010] In one embodiment, a curvature radius R9 of the object-side surface of the fifth lens and an effective focal length f5 of the fifth lens may satisfy -1.5<R9 / f5<-1.

[0011] In one embodiment, a curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens may satisfy 2.5<R2 / (R1×2)<3.5.

[0012] 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<f2 / f4<-1.

[0013] In one embodiment, a curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens may satisfy 1.5<(R3+R4) / (R3-R4)<2.5.

[0014] In one embodiment, the sum ΣAT of the air intervals between any two adjacent lenses of the first to fifth lenses on the optical axis and the sum ΣCT of the center thicknesses of the first to fifth lenses on the optical axis respectively may satisfy 0.3<ΣAT / ΣCT<0.6.

[0015] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens group on the optical axis and half the diagonal length of the effective pixel area on the imaging surface of the camera lens group ImgH may satisfy TTL / ImgH<1.6.

[0016] On the other hand, the present application provides such a camera lens group, which includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens in order from the object side to the image side along the optical axis. The first lens may have positive optical power, and its object side surface may be convex, and its image side surface may be concave; the second lens may have negative optical power, and its object side surface may be convex, and its image side surface may be concave; the third lens has positive optical power or negative optical power; the fourth lens may have positive optical power; and the fifth lens may have negative optical power, and its object side surface may be convex, and its image side surface may be concave. The maximum value Vn of the dispersion coefficient of each lens from the first lens to the fifth lens may satisfy Vn>1000.

[0017] On the other hand, the present application provides such a camera lens group, which includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens in order from the object side to the image side along the optical axis. Among them, the first lens may have positive optical power, and its object side surface may be convex, and the image side surface may be concave; the second lens may have negative optical power, and its object side surface may be convex, and the image side surface may be concave; the third lens has positive optical power or negative optical power; the fourth lens may have positive optical power; and the fifth lens may have negative optical power, and its object side surface may be convex, and the image side surface may be concave. Among them, at least one lens of the first lens to the fifth lens may be formed of an infrared single-band material, and the working band of the camera lens group may be about 700nm to about 990nm. Further, the working band of the camera lens group may be about 850nm to about 940nm.

[0018] On the other hand, the present application provides such a camera lens group, which includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens in order from the object side to the image side along the optical axis. The first lens may have positive optical power, and its object side surface may be convex, and its image side surface may be concave; the second lens may have negative optical power, and its object side surface may be convex, and its image side surface may be concave; the third lens has positive optical power or negative optical power; the fourth lens may have positive optical power; and the fifth lens may have negative optical power, and its object side surface may be convex, and its image side surface may be concave. The maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT52 of the image side surface of the fifth lens may satisfy 1.5<DT52 / (DT11×2)<2.

[0019] On the other hand, the present application provides such a camera lens group, which includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens in order from the object side to the image side along the optical axis. The first lens may have positive optical power, and its object side surface may be convex, and its image side surface may be concave; the second lens may have negative optical power, and its object side surface may be convex, and its image side surface may be concave; the third lens has positive optical power or negative optical power; the fourth lens may have positive optical power; and the fifth lens may have negative optical power, and its object side surface may be convex, and its image side surface may be concave. The curvature radius R9 of the object side surface of the fifth lens and the effective focal length f5 of the fifth lens may satisfy -1.5<R9 / f5<-1.

[0020] On the other hand, the present application provides such a camera lens group, which includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens in order from the object side to the image side along the optical axis. The first lens may have positive focal power, and its object side surface may be convex, and its image side surface may be concave; the second lens may have negative focal power, and its object side surface may be convex, and its image side surface may be concave; the third lens has positive focal power or negative focal power; the fourth lens may have positive focal power; and the fifth lens may have negative focal power, and its object side surface may be convex, and its image side surface may be concave. The curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens may satisfy 2.5<R2 / (R1×2)<3.5.

[0021] The present application adopts five lenses. By using infrared single-band materials and reasonably allocating the optical focal length, surface shape, center thickness of each lens and axial spacing between each lens, the above-mentioned camera lens group can be applied to near-infrared application scenarios and has at least one beneficial effect in the near-infrared band, such as high imaging quality and high light transmittance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, purposes and advantages of the present application will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0023] Figure 1 A schematic structural diagram of a camera lens assembly according to Embodiment 1 of the present application is shown;

[0024] FIG. 2A to FIG. 2C The astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 1 are respectively shown;

[0025] Figure 3 A schematic structural diagram of a camera lens assembly according to Embodiment 2 of the present application is shown;

[0026] FIG. 4A to FIG. 4C The astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 2 are respectively shown;

[0027] Figure 5 A schematic structural diagram of a camera lens assembly according to Embodiment 3 of the present application is shown;

[0028] FIG. 6A to FIG. 6C The astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 3 are respectively shown;

[0029] Figure 7 A schematic structural diagram of a camera lens assembly according to Embodiment 4 of the present application is shown;

[0030] FIG. 8A to FIG. 8CThe astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 4 are respectively shown;

[0031] Fig. 9 A schematic structural diagram of a camera lens assembly according to Embodiment 5 of the present application is shown;

[0032] FIG. 10A to FIG. 10C The astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 5 are respectively shown;

[0033] Fig.11 A schematic structural diagram of a camera lens assembly according to Embodiment 6 of the present application is shown;

[0034] FIG. 12A to FIG. 12C The astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 6 are respectively shown;

[0035] Fig.13 A schematic structural diagram of a camera lens assembly according to Embodiment 7 of the present application is shown;

[0036] FIG. 14A to FIG. 14C The astigmatism curve, distortion curve and magnification chromatic aberration curve of the camera lens set of Example 7 are respectively shown;

[0037] Fig.15 A curve showing the relationship between the transmittance and wavelength of the camera lens assembly according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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 subject is called the object side of the lens, and the surface of each lens closest to the imaging surface is called the image side of the lens.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] The features, principles and other aspects of the present application are described in detail below.

[0046] The camera lens assembly according to the exemplary embodiment of the present application may include, for example, five lenses with optical power, namely, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are arranged in sequence from the object side to the image side along the optical axis, and each adjacent lens may have an air gap between them.

[0047] In an exemplary embodiment, the first lens may have positive optical power, and its object side surface may be convex and its image side surface may be concave; the second lens may have negative optical power, and its object side surface may be convex and its image side surface may be concave; the third lens may have positive optical power or negative optical power; the fourth lens may have positive optical power; the fifth lens may have negative optical power, and its object side surface may be convex and its image side surface may be concave.

[0048] In example embodiments, the image-side surface of the fourth lens may be a convex surface.

[0049] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula (λn-700)(λn-800)≤0, where λn is a wavelength value corresponding to 50% transmittance of the camera lens assembly. Fig.15 A graph showing the relationship between the transmittance and wavelength of a camera lens assembly according to an exemplary embodiment of the present application is shown. Fig.15 , λn should be understood as the value of the horizontal coordinate corresponding to the point with a vertical coordinate of 50% on the curve (i.e., the corresponding wavelength value). The camera lens group of the present application is dedicated to near-infrared application scenarios. When the conditional formula (λn-700)(λn-800)≤0 is met, it can be ensured that the wavelength value corresponding to 50% of the transmittance of the camera lens group is within the spectral range between 700nm and 800nm, thereby ensuring that the overall transmittance of the camera lens group in the near-infrared band can meet the sensing requirements of the CMOS chip.

[0050] In an exemplary embodiment, at least one of the first to fifth lenses is formed of an infrared single-band material such as FBK80, and the operating band of the camera lens group may be a near-infrared spectral band of about 700nm to about 990nm, more specifically, the operating band of the camera lens group may be a near-infrared spectral band of about 850nm to about 940nm. By using an infrared single-band material with a high transmittance in the near-infrared band, it is ensured that the operating band of the lens is the near-infrared band, and the effect of effectively filtering other bands such as the visible band is achieved, thereby significantly reducing the impact of other bands such as the visible band on the lens imaging. In addition, the above-mentioned infrared single-band material has a large Abbe number in the infrared band, and when used in combination with other materials, it can effectively reduce the aberration of the camera lens group and meet the imaging requirements of the near-infrared band.

[0051] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula Vn>1000, where Vn is the maximum value of the dispersion coefficient of each lens from the first lens to the fifth lens. Satisfying the conditional formula Vn>1000 can ensure that the lens can be specifically applied to the near-infrared band, and can ensure the resolution and light transmittance of the lens when applied to the near-infrared band.

[0052] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula TTL / ImgH<1.6, wherein TTL is the distance on the optical axis from the object side of the first lens to the imaging plane of the camera lens assembly, and ImgH is half the diagonal length of the effective pixel area on the imaging plane of the camera lens assembly. More specifically, TTL and ImgH may further satisfy 1.2<TTL / ImgH<1.6, for example, 1.35≤TTL / ImgH≤1.55. Satisfying the conditional formula TTL / ImgH<1.6 is conducive to increasing the image plane size of the camera lens assembly and can make the camera lens assembly have a smaller volume.

[0053] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula 1<f / f1<1.5, where f is the total effective focal length of the camera lens assembly, and f1 is the effective focal length of the first lens. More specifically, f and f1 may further satisfy 1.25≤f / f1≤1.32. By rationally allocating the focal length of the first lens, it is beneficial to reduce the optical distortion of the camera lens assembly and improve the relative brightness of the edge field of view.

[0054] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula -2<f2 / f4<-1, wherein f2 is the effective focal length of the second lens, and f4 is the effective focal length of the fourth lens. More specifically, f2 and f4 may further satisfy -2<f2 / f4<-1.2, for example, -1.87≤f2 / f4≤-1.48. By controlling the effective focal length of the second lens and the effective focal length of the fourth lens, the decentering sensitivity of the fourth lens may be effectively reduced.

[0055] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula -1.5<R9 / f5<-1, where R9 is the radius of curvature of the object side of the fifth lens, and f5 is the effective focal length of the fifth lens. More specifically, R9 and f5 may further satisfy -1.39≤R9 / f5≤-1.19. By controlling the radius of curvature of the object side of the fifth lens and the effective focal length of the fifth lens, the chromatic aberration on the optical axis can be effectively reduced, thereby ensuring that the camera lens assembly has good imaging quality.

[0056] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula 2.5<R2 / (R1×2)<3.5, wherein R1 is the radius of curvature of the object side surface of the first lens, and R2 is the radius of curvature of the image side surface of the first lens. More specifically, R2 and R1 may further satisfy 2.84≤R2 / (R1×2)≤3.01. By controlling the radius of curvature of the object side surface of the first lens and the radius of curvature of the image side surface of the first lens, the sensitivity of the overall camera lens assembly may be effectively reduced, thereby facilitating meeting the requirements of processability.

[0057] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula 1.5<(R3+R4) / (R3-R4)<2.5, wherein R3 is the radius of curvature of the object side surface of the second lens, and R4 is the radius of curvature of the image side surface of the second lens. More specifically, R3 and R4 may further satisfy 1.89≤(R3+R4) / (R3-R4)≤2.15. By controlling the radius of curvature of the object side surface of the second lens and the radius of curvature of the image side surface of the second lens, the optical distortion may be reduced, thereby ensuring that the camera lens assembly has good imaging quality.

[0058] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula 1.5<DT52 / (DT11×2)<2, wherein DT11 is the maximum effective radius of the object side of the first lens, and DT52 is the maximum effective radius of the image side of the fifth lens. More specifically, DT52 and DT11 may further satisfy 1.52≤DT52 / (DT11×2)≤1.68. Satisfying the conditional formula 1.5<DT52 / (DT11×2)<2 is conducive to ensuring the assembly stability of the first lens and the fifth lens and realizing mass production.

[0059] In an exemplary embodiment, the camera lens assembly of the present application may satisfy the conditional formula 0.3<∑AT / ∑CT<0.6, wherein ∑AT is the sum of the air intervals between any two adjacent lenses from the first lens to the fifth lens on the optical axis, and ∑CT is the sum of the center thicknesses of the first lens to the fifth lens on the optical axis. More specifically, ∑AT and ∑CT may further satisfy 0.47≤∑AT / ∑CT≤0.52. Satisfying the conditional formula 0.3<∑AT / ∑CT<0.6 is conducive to ensuring the assembly process of the lens, and can ensure the miniaturization of the camera lens assembly, so that it can better meet the needs of the whole machine.

[0060] In an exemplary embodiment, the camera lens assembly may further include an aperture to improve the imaging quality of the lens. Optionally, the aperture may be disposed between the object side and the first lens.

[0061] Optionally, the camera lens assembly may further include a filter for correcting color deviation and / or a protective glass for protecting a photosensitive element located on the imaging surface.

[0062] According to the above-mentioned embodiment of the present application, the camera lens group can use multiple lenses, such as the five lenses described above. By reasonably allocating the focal length, surface shape, center thickness of each lens, and axial spacing between lenses, etc., the size of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the camera lens group is more conducive to production and processing and can be applied to portable electronic products. At the same time, by applying optical infrared materials, it is ensured that the working band of the lens group configured above is the near-infrared spectral band, so that the camera lens group configured above can be applied to near-infrared application scenarios. The lens group configured as above can have beneficial effects such as high imaging quality, high resolution, and high light transmittance in the near-infrared band.

[0063] In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object side surface and the image side surface 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. 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, the object side surface and the image side surface of each lens in the first lens, the second lens, the third lens, the fourth lens and the fifth lens are aspherical mirror surfaces.

[0064] 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.

[0065] Specific embodiments of the camera lens assembly applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

[0066] Example 1

[0067] The following reference Figures 1 to 2C A camera lens assembly according to Embodiment 1 of the present application is described. Figure 1 A schematic structural diagram of a camera lens assembly according to Embodiment 1 of the present application is shown.

[0068] like Figure 1As shown, the camera lens group according to the exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture 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.

[0069] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0070] In this embodiment, the fourth lens element E4 is formed of an infrared single-band material. The working band of the camera lens assembly is about 700 nm to about 990 nm, more specifically, about 850 nm to about 940 nm.

[0071] Table 1 shows the surface type, curvature radius, thickness, material and cone coefficient of each lens of the camera lens set of Example 1, wherein the units of the curvature radius and thickness are both millimeters (mm).

[0072]

[0073]

[0074] Table 1

[0075] As can be seen from Table 1, the object side surface and the image side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces. In this embodiment, the surface shape x of each aspherical lens can be defined by but not limited to the following aspherical surface formula:

[0076]

[0077] 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 (given in Table 1); Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the high-order coefficients A4, A6, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24, A25, A26, A27, A28, A29, A30, A31, A32, A33, A34, A35, A36, A37, A38, A39, A40, A41, A42, A43, A44, A45, A46, A47, A48, A49, A50, A51, A52, A53, A54, A55, A56, A57, A58, A59, A60, A61, A71, A72, A73, A74, A75, A76, A77, A8, A9, A10, A11, A12, A13, A14, A15 10 , A 12 , A 14 , A 16 , A18 and A 20 .

[0078] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 4.1638E-03 1.1423E-01 -7.7756E-01 3.1532E+00 -7.7190E+00 1.1523E+01 -1.0304E+01 5.0656E+00 -1.0640E+00 S2 -2.5386E-01 3.8726E-01 1.1043E+00 -8.7582E+00 2.8235E+01 -5.3195E+01 5.8671E+01 -3.4918E+01 8.6463E+00 S3 -2.7834E-01 4.5651E-01 1.4280E+00 -9.8822E+00 2.8954E+01 -5.0071E+01 5.1259E+01 -2.8431E+01 6.5454E+00 S4 -8.1300E-02 1.9135E-02 1.9636E+00 -1.0767E+01 3.1963E+01 -5.7198E+01 6.0813E+01 -3.4882E+01 8.2512E+00 S5 -1.7562E-01 -1.5832E-01 1.0479E+00 -4.4003E+00 1.0668E+01 -1.5569E+01 1.2958E+01 -5.3654E+00 8.0503E-01 S6 -1.3461E-01 5.3474E-02 -5.0596E-01 1.8002E+00 -3.6338E+00 4.4731E+00 -3.3248E+00 1.3869E+00 -2.4725E-01 S7 8.0998E-02 -2.7995E-01 4.6999E-01 -6.9963E-01 7.0977E-01 -4.6410E-01 1.8409E-01 -3.9539E-02 3.4970E-03 S8 1.1195E-01 -2.1760E-01 2.4244E-01 -2.0001E-01 1.1578E-01 -4.2203E-02 9.0397E-03 -1.0342E-03 4.8665E-05 S9 -3.6649E-01 1.2574E-01 4.2424E-02 -4.2860E-02 1.4335E-02 -2.6347E-03 2.8305E-04 -1.6715E-05 4.1999E-07 S10 -2.1934E-01 1.5155E-01 -7.4241E-02 2.5647E-02 -6.1006E-03 9.3226E-04 -8.3020E-05 3.6554E-06 -5.1235E-08

[0079] Table 2

[0080] Table 3 gives the effective focal lengths f1 to f5 of each lens of the camera lens group in Example 1, the total effective focal length f, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, and half the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens group.

[0081]

[0082] Table 3

[0083] The camera lens assembly in Embodiment 1 satisfies the following relationship:

[0084] (λn-700)(λn-800)≤0, where λn is the wavelength value corresponding to when the transmittance of the camera lens group reaches 50%;

[0085] Vn=1935, where Vn is the maximum value of the dispersion coefficient of each lens from the first lens E1 to the fifth lens E5;

[0086] TTL / ImgH=1.35, where TTL is the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S13 of the camera lens group, and ImgH is half the diagonal length of the effective pixel area on the imaging surface S13 of the camera lens group;

[0087] f / f1=1.27, where f is the total effective focal length of the camera lens group, and f1 is the effective focal length of the first lens E1;

[0088] f2 / f4=-1.87, where f2 is the effective focal length of the second lens E2, and f4 is the effective focal length of the fourth lens E4;

[0089] -R9 / f5=-1.31, where R9 is the radius of curvature of the object-side surface S9 of the fifth lens E5, and f5 is the effective focal length of the fifth lens E5;

[0090] R2 / (R1×2)=2.84, where R1 is the curvature radius of the object-side surface S1 of the first lens E1, and R2 is the curvature radius of the image-side surface S2 of the first lens E1;

[0091] (R3+R4) / (R3-R4)=1.93, where R3 is the curvature radius of the object-side surface S3 of the second lens E2, and R4 is the curvature radius of the image-side surface S4 of the second lens E2;

[0092] DT52 / (DT11×2)=1.52, wherein DT11 is the maximum effective radius of the object-side surface S1 of the first lens E1, and DT52 is the maximum effective radius of the image-side surface S10 of the fifth lens E5;

[0093] ∑AT / ∑CT=0.50, wherein ∑AT is the sum of air intervals between any two adjacent lenses among the first lens E1 to the fifth lens E5 on the optical axis, and ∑CT is the sum of center thicknesses of the first lens E1 to the fifth lens E5 on the optical axis.

[0094] Figure 2A The astigmatism curve of the imaging lens set 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 set of Example 1 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 2C The magnification chromatic aberration curve of the camera lens set of Example 1 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 2A to FIG. 2C It can be seen that the camera lens assembly provided in Example 1 can achieve good imaging quality.

[0095] Example 2

[0096] The following reference Figures 3 to 4C The camera 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 3 A schematic structural diagram of a camera lens assembly according to Embodiment 2 of the present application is shown.

[0097] like Figure 3 As shown, the camera lens group according to the exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture 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.

[0098] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0099] In this embodiment, the fourth lens element E4 is formed of an infrared single-band material. The working band of the camera lens assembly is about 700 nm to about 990 nm, more specifically, about 850 nm to about 940 nm.

[0100] Table 4 shows the surface type, curvature radius, thickness, material and cone coefficient of each lens of the camera lens set of Example 2, wherein the units of the curvature radius and thickness are both millimeters (mm).

[0101]

[0102]

[0103] Table 4

[0104] It can be seen from Table 4 that in Example 2, the object side surface and the image side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces. Table 5 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 2, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0105] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.0613E-03 5.8384E-02 -3.3095E-01 1.1967E+00 -2.6391E+00 3.5453E+00 -2.8817E+00 1.3046E+00 -2.6428E-01 S2 -2.3726E-01 2.3782E-01 2.0484E+00 -1.2596E+01 3.8009E+01 -6.8727E+01 7.3522E+01 -4.2689E+01 1.0350E+01 S3 -2.7047E-01 4.2154E-01 1.4507E+00 -9.4979E+00 2.7106E+01 -4.5989E+01 4.6340E+01 -2.5328E+01 5.7478E+00 S4 -8.5625E-02 8.0159E-02 1.3590E+00 -7.6753E+00 2.2811E+01 -4.0946E+01 4.3912E+01 -2.5453E+01 6.0795E+00 S5 -1.7816E-01 -1.6391E-01 1.0546E+00 -4.4232E+00 1.0722E+01 -1.5854E+01 1.3488E+01 -5.7256E+00 8.8320E-01 S6 -1.2776E-01 -5.1557E-02 5.9581E-02 1.1521E-01 -6.4948E-01 1.2399E+00 -1.2367E+00 6.5439E-01 -1.4047E-01 S7 6.2063E-02 -2.7734E-01 5.3536E-01 -8.2087E-01 8.1794E-01 -5.1797E-01 1.9890E-01 -4.1550E-02 3.5926E-03 S8 9.9323E-02 -1.9844E-01 2.3310E-01 -1.9427E-01 1.0877E-01 -3.7857E-02 7.7538E-03 -8.5215E-04 3.8688E-05 S9 -3.3382E-01 1.0740E-01 3.8216E-02 -3.6088E-02 1.1660E-02 -2.0824E-03 2.1786E-04 -1.2534E-05 3.0666E-07 S10 -1.8494E-01 1.1433E-01 -4.9087E-02 1.4770E-02 -3.0735E-03 4.1313E-04 -3.2076E-05 1.1712E-06 -1.0131E-08

[0106] Table 5

[0107] Table 6 gives the effective focal lengths f1 to f5 of each lens of the camera lens group in Example 2, the total effective focal length f, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S13, and half the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens group.

[0108]

[0109] Table 6

[0110] Figure 4A The astigmatism curve of the imaging lens set of Example 2 is shown, which indicates the meridional field curvature and the sagittal field curvature. Figure 4B The distortion curve of the camera lens set of Example 2 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 4C The magnification chromatic aberration curve of the camera lens set of Example 2 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 4A to FIG. 4C It can be seen that the camera lens set provided in Example 2 can achieve good imaging quality.

[0111] Example 3

[0112] The following reference Figures 5 to 6C A camera lens set according to Embodiment 3 of the present application is described. Figure 5A schematic structural diagram of a camera lens assembly according to Embodiment 3 of the present application is shown.

[0113] like Figure 5 As shown, the camera lens group according to the exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture 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.

[0114] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is convex, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0115] In this embodiment, the third lens E3, the fourth lens E4 and the fifth lens E5 are all formed of infrared single-band materials. The working band of the camera lens group is about 700nm to about 990nm, more specifically, about 850nm to about 940nm.

[0116] Table 7 shows the surface type, curvature radius, thickness, material and cone coefficient of each lens of the camera lens set of Example 3, wherein the units of the curvature radius and thickness are both millimeters (mm).

[0117]

[0118]

[0119] Table 7

[0120] It can be seen from Table 7 that in Example 3, the object side surface and the image side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces. Table 8 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 3, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0121] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.2508E-02 1.5605E-02 -5.4273E-02 1.5269E-01 -1.8467E-01 -1.5132E-01 6.2179E-01 -5.9906E-01 1.7859E-01 S2 -2.6311E-01 3.6763E-01 1.7849E+00 -1.2076E+01 3.6299E+01 -6.4684E+01 6.8302E+01 -3.9290E+01 9.4760E+00 S3 -2.9118E-01 5.5177E-01 1.1536E+00 -9.1736E+00 2.6885E+01 -4.5800E+01 4.6153E+01 -2.5227E+01 5.7274E+00 S4 -9.4183E-02 2.3799E-01 2.4058E-01 -3.0593E+00 1.0833E+01 -2.1573E+01 2.5149E+01 -1.5549E+01 3.8952E+00 S5 -1.7128E-01 -1.9985E-01 1.2547E+00 -5.1653E+00 1.2572E+01 -1.8929E+01 1.6531E+01 -7.2994E+00 1.2075E+00 S6 -1.1868E-01 -1.0850E-01 2.9687E-01 -4.9137E-01 3.4867E-01 1.9495E-01 -5.7081E-01 4.1877E-01 -1.0485E-01 S7 5.6451E-02 -2.8627E-01 5.2247E-01 -7.5927E-01 7.3159E-01 -4.5402E-01 1.7254E-01 -3.5880E-02 3.0966E-03 S8 9.7195E-02 -1.8327E-01 1.9092E-01 -1.4358E-01 7.4414E-02 -2.4343E-02 4.7194E-03 -4.9245E-04 2.1254E-05 S9 -2.9951E-01 9.4660E-02 3.2201E-02 -3.0701E-02 9.9579E-03 -1.7854E-03 1.8712E-04 -1.0741E-05 2.6093E-07 S10 -1.5372E-01 9.0760E-02 -3.8140E-02 1.1568E-02 -2.5170E-03 3.6933E-04 -3.3559E-05 1.6681E-06 -3.4077E-08

[0122] Table 8

[0123] Table 9 gives the effective focal lengths f1 to f5 of each lens of the camera lens group in Example 3, the total effective focal length f, the distance TTL on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S13, and half the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens group.

[0124]

[0125] Table 9

[0126] Fig. 6A The astigmatism curve of the imaging lens set 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 set of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 6C The magnification chromatic aberration curve of the camera lens set of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 6A to FIG. 6C It can be seen that the camera lens set provided in Example 3 can achieve good imaging quality.

[0127] Example 4

[0128] The following reference Figures 7 to 8C A camera lens set according to Embodiment 4 of the present application is described. Figure 7 A schematic structural diagram of a camera lens assembly according to Embodiment 4 of the present application is shown.

[0129] like Figure 7 As shown, the camera lens group according to the exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture 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.

[0130] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is a plane in the paraxial area, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0131] In this embodiment, the third lens E3, the fourth lens E4 and the fifth lens E5 are all formed of infrared single-band materials. The working band of the camera lens group is about 700nm to about 990nm, more specifically, about 850nm to about 940nm.

[0132] Table 10 shows the surface type, curvature radius, thickness, material and cone coefficient of each lens of the camera lens set of Example 4, wherein the units of the curvature radius and thickness are both millimeters (mm).

[0133]

[0134]

[0135] Table 10

[0136] It can be seen from Table 10 that in Example 4, the object side surface and the image side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces. Table 11 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 4, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0137] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.1216E-02 -1.7561E-03 8.8585E-02 -5.0453E-01 1.4974E+00 -2.5793E+00 2.5462E+00 -1.3391E+00 2.8358E-01 S2 -2.3075E-01 3.0184E-01 1.4425E+00 -8.4589E+00 2.1169E+01 -3.0675E+01 2.6206E+01 -1.2269E+01 2.4406E+00 S3 -2.4066E-01 4.1025E-01 1.0009E+00 -6.7747E+00 1.7105E+01 -2.4477E+01 2.0533E+01 -9.3708E+00 1.7914E+00 S4 -7.5640E-02 1.5656E-01 2.3112E-01 -2.0929E+00 6.2931E+00 -1.0740E+01 1.0859E+01 -5.8910E+00 1.3047E+00 S5 -1.4938E-01 -1.5867E-01 9.2338E-01 -3.5975E+00 8.1917E+00 -1.1454E+01 9.2346E+00 -3.7501E+00 5.6910E-01 S6 -1.1071E-01 -6.9888E-02 2.3056E-01 -4.9101E-01 5.9816E-01 -3.6799E-01 3.5894E-02 8.0466E-02 -2.8866E-02 S7 -4.3255E-03 -1.0390E-01 1.4729E-01 -1.9890E-01 1.8581E-01 -1.1351E-01 4.2360E-02 -8.5105E-03 6.9709E-04 S8 5.1201E-02 -8.7122E-02 5.9439E-02 -2.6481E-02 8.3887E-03 -1.7978E-03 2.4089E-04 -1.7945E-05 5.6302E-07 S9 -2.1315E-01 3.6337E-02 3.7874E-02 -2.3842E-02 6.5895E-03 -1.0398E-03 9.6355E-05 -4.8805E-06 1.0429E-07 S10 -1.2032E-01 5.9126E-02 -1.9408E-02 4.4360E-03 -7.1046E-04 7.6568E-05 -5.1750E-06 1.9515E-07 -3.1012E-09

[0138] Table 11

[0139] Table 12 gives the effective focal lengths f1 to f5 of each lens of the camera lens group in Example 4, the total effective focal length f, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S13, and half the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens group.

[0140]

[0141] Table 12

[0142] Fig. 8A The astigmatism curve of the imaging lens set 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 set of Example 4 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 8C The magnification chromatic aberration curve of the camera lens set of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 8A to FIG. 8C It can be seen that the camera lens set provided in Example 4 can achieve good imaging quality.

[0143] Example 5

[0144] The following reference Figures 9 to 10C A camera lens set according to Embodiment 5 of the present application is described. Fig. 9 A schematic structural diagram of a camera lens assembly according to embodiment 5 of the present application is shown.

[0145] like Fig. 9 As shown, the camera lens group according to the exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture 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.

[0146] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0147] In this embodiment, the third lens E3, the fourth lens E4 and the fifth lens E5 are all formed of infrared single-band materials. The working band of the camera lens group is about 700nm to about 990nm, more specifically, about 850nm to about 940nm.

[0148] Table 13 shows the surface type, curvature radius, thickness, material and cone coefficient of each lens of the camera lens set of Example 5, wherein the units of the curvature radius and thickness are both millimeters (mm).

[0149]

[0150]

[0151] Table 13

[0152] It can be seen from Table 13 that in Example 5, the object side surface and the image side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces. Table 14 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 5, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0153] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.9183E-03 9.1073E-03 8.7226E-03 -1.4343E-01 4.5668E-01 -6.9497E-01 5.0854E-01 -1.5632E-01 7.2562E-03 S2 -2.2619E-01 3.2426E-01 1.2654E+00 -7.8103E+00 1.9599E+01 -2.8388E+01 2.4384E+01 -1.1579E+01 2.3566E+00 S3 -2.4205E-01 4.6715E-01 6.5550E-01 -5.4340E+00 1.3611E+01 -1.8799E+01 1.5101E+01 -6.5911E+00 1.2063E+00 S4 -8.4177E-02 1.6786E-01 3.0380E-01 -2.5245E+00 7.3865E+00 -1.2281E+01 1.2083E+01 -6.3933E+00 1.3856E+00 S5 -1.5296E-01 -8.9036E-02 5.9214E-01 -2.5021E+00 5.8698E+00 -8.3524E+00 6.7410E+00 -2.6733E+00 3.8079E-01 S6 -1.1299E-01 -5.3353E-02 2.0465E-01 -4.8419E-01 6.3759E-01 -4.3421E-01 8.1324E-02 6.6152E-02 -2.7193E-02 S7 -3.2521E-02 -8.0005E-02 1.1960E-01 -1.7378E-01 1.7113E-01 -1.0948E-01 4.2849E-02 -9.0123E-03 7.6996E-04 S8 2.3828E-02 -6.1753E-02 3.9749E-02 -1.5545E-02 4.4103E-03 -8.8626E-04 1.1493E-04 -8.3957E-06 2.5898E-07 S9 -2.4360E-01 7.1179E-02 1.4434E-02 -1.4839E-02 4.4957E-03 -7.3756E-04 6.9878E-05 -3.5936E-06 7.7708E-08 S10 -1.1916E-01 6.0300E-02 -1.9949E-02 4.5476E-03 -7.2353E-04 7.7034E-05 -5.1118E-06 1.8844E-07 -2.9222E-09

[0154] Table 14

[0155] Table 15 gives the effective focal lengths f1 to f5 of each lens of the camera lens group in Example 5, the total effective focal length f, the distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S13 on the optical axis, and half the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens group.

[0156]

[0157] Table 15

[0158] Fig. 10A The astigmatism curve of the imaging lens set 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 set of Example 5 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 10C The magnification chromatic aberration curve of the camera lens set of Example 5 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 10A to FIG. 10C It can be seen that the camera lens set provided in Example 5 can achieve good imaging quality.

[0159] Example 6

[0160] The following reference Figures 11 to 12C A camera lens set according to Embodiment 6 of the present application is described. Fig.11 A schematic structural diagram of a camera lens assembly according to Example 6 of the present application is shown.

[0161] like Fig.11 As shown, the camera lens group according to the exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture 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.

[0162] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has positive focal power, and its object side surface S5 is convex, and its image side surface S6 is concave. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0163] In this embodiment, the third lens E3, the fourth lens E4 and the fifth lens E5 are all formed of infrared single-band materials. The working band of the camera lens group is about 700nm to about 990nm, more specifically, about 850nm to about 940nm.

[0164] Table 16 shows the surface type, curvature radius, thickness, material and cone coefficient of each lens of the camera lens set of Example 6, wherein the units of the curvature radius and thickness are both millimeters (mm).

[0165]

[0166]

[0167] Table 16

[0168] It can be seen from Table 16 that in Example 6, the object side surface and the image side surface of any lens from the first lens E1 to the fifth lens E5 are both aspherical surfaces. Table 17 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 6, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0169] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 8.7635E-03 3.6099E-02 -2.3393E-01 1.0147E+00 -2.6971E+00 4.3646E+00 -4.1922E+00 2.1688E+00 -4.6417E-01 S2 -2.5137E-01 5.8942E-01 -4.8821E-01 -3.2831E-01 3.4310E-01 1.0350E+00 -1.6884E+00 7.8710E-01 -7.1702E-02 S3 -2.6131E-01 6.9083E-01 -7.4845E-01 2.7033E-01 -5.7663E-01 2.1461E+00 -2.7292E+00 1.4820E+00 -2.9771E-01 S4 -8.3622E-02 2.0098E-01 1.2727E-01 -1.9916E+00 6.4361E+00 -1.1444E+01 1.1870E+01 -6.5213E+00 1.4496E+00 S5 -1.5998E-01 -1.3071E-01 9.0450E-01 -3.4548E+00 7.5755E+00 -1.0102E+01 7.7078E+00 -2.9302E+00 4.0508E-01 S6 -1.3081E-01 -4.5623E-03 1.0399E-02 8.5940E-02 -3.6177E-01 6.1324E-01 -5.5253E-01 2.6653E-01 -5.2340E-02 S7 -3.2799E-02 -5.3827E-02 6.0686E-02 -1.0179E-01 1.2155E-01 -9.1432E-02 4.0160E-02 -9.1133E-03 8.1958E-04 S8 1.8526E-02 -4.7180E-02 2.3478E-02 -4.9694E-03 4.2722E-04 -1.1006E-05 3.6497E-06 -7.8195E-07 4.1572E-08 S9 -1.9438E-01 1.9825E-02 4.3939E-02 -2.4498E-02 6.3627E-03 -9.5531E-04 8.4819E-05 -4.1381E-06 8.5531E-08 S10 -1.1557E-01 5.1678E-02 -1.4676E-02 2.8284E-03 -3.7272E-04 3.2246E-05 -1.7191E-06 5.0705E-08 -6.2942E-10

[0170] Table 17

[0171] Table 18 gives the effective focal lengths f1 to f5 of each lens of the camera lens group in Example 6, the total effective focal length f, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S13, and half the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens group.

[0172]

[0173] Table 18

[0174] Fig. 12A The astigmatism curve of the imaging lens group 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 set of Example 6 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 12C The magnification chromatic aberration curve of the camera lens set of Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 12A to FIG. 12C It can be seen that the camera lens set provided in Example 6 can achieve good imaging quality.

[0175] Example 7

[0176] The following reference Figures 13 to 14C A camera lens set according to Embodiment 7 of the present application is described. Fig.13 A schematic structural diagram of a camera lens assembly according to Example 7 of the present application is shown.

[0177] like Fig.13 As shown, the camera lens group according to the exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture 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.

[0178] The first lens E1 has positive focal power, and its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has negative focal power, and its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative focal power, and its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has positive focal power, and its object side surface S7 is concave, and its image side surface S8 is convex. The fifth lens E5 has negative focal power, and 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. The light from the object passes through each surface S1 to S12 in sequence and is finally imaged on the imaging surface S13.

[0179] In this embodiment, the third lens E3, the fourth lens E4 and the fifth lens E5 are all formed of infrared single-band materials. The working band of the camera lens group is about 700nm to about 990nm, more specifically, about 850nm to about 940nm.

[0180] Table 19 shows the surface type, curvature radius, thickness, material and cone coefficient of each lens of the camera lens group of Example 7, wherein the units of the curvature radius and thickness are both millimeters (mm).

[0181]

[0182]

[0183] Table 19

[0184] It can be seen from Table 19 that in Example 7, 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 20 shows the high-order coefficients of each aspherical mirror surface that can be used in Example 7, wherein the surface shape of each aspherical surface can be defined by the formula (1) given in the above Example 1.

[0185] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.3229E-03 2.8453E-02 -2.0446E-01 9.4705E-01 -2.6020E+00 4.2728E+00 -4.1260E+00 2.1373E+00 -4.5721E-01 S2 -2.5742E-01 6.8225E-01 -1.1823E+00 2.2641E+00 -5.1286E+00 7.8798E+00 -6.6513E+00 2.6829E+00 -3.6124E-01 S3 -2.6052E-01 7.4858E-01 -1.3443E+00 2.7833E+00 -6.4427E+00 1.0328E+01 -9.4836E+00 4.5126E+00 -8.6510E-01 S4 -7.6876E-02 2.1763E-01 -1.8317E-01 -4.0212E-01 1.9760E+00 -3.9812E+00 4.5206E+00 -2.6307E+00 6.0154E-01 S5 -1.6357E-01 -7.3615E-02 5.0985E-01 -1.9299E+00 4.0428E+00 -5.1122E+00 3.5746E+00 -1.1112E+00 7.9616E-02 S6 -1.3377E-01 -3.2428E-03 1.3097E-02 5.3005E-02 -2.6140E-01 4.6146E-01 -4.2651E-01 2.1226E-01 -4.2949E-02 S7 -3.2410E-02 -6.1010E-02 7.9611E-02 -1.2976E-01 1.4626E-01 -1.0462E-01 4.4392E-02 -9.8742E-03 8.7855E-04 S8 1.2457E-02 -3.3872E-02 1.4597E-02 -1.4770E-03 -5.1309E-04 1.5744E-04 -1.5175E-05 4.0143E-07 9.5839E-09 S9 -2.0036E-01 4.9749E-02 1.9579E-02 -1.4636E-02 3.9839E-03 -5.9778E-04 5.2010E-05 -2.4604E-06 4.9003E-08 S10 -1.0709E-01 4.9118E-02 -1.4567E-02 2.9374E-03 -4.0287E-04 3.6023E-05 -1.9729E-06 5.9503E-08 -7.5287E-10

[0186] Table 20

[0187] Table 21 gives the effective focal lengths f1 to f5 of each lens of the camera lens group in Example 7, the total effective focal length f, the distance TTL on the optical axis from the object side S1 of the first lens E1 to the imaging surface S13, and half the diagonal length ImgH of the effective pixel area on the imaging surface S13 of the camera lens group.

[0188]

[0189] Table 21

[0190] Fig.14A The astigmatism curve of the imaging lens group of Example 7 is shown, which indicates the meridional image surface curvature and the sagittal image surface curvature. Fig. 14B The distortion curve of the camera lens set of Example 7 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Fig. 14C The magnification chromatic aberration curve of the camera lens set of Example 7 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the lens. FIG. 14A to FIG. 14C It can be seen that the camera lens set provided in Example 7 can achieve good imaging quality.

[0191] In summary, Examples 1 to 7 respectively satisfy the relationships shown in Table 22.

[0192]

[0193] Table 22

[0194] The present application also provides a camera device, whose electronic photosensitive element can be a photosensitive coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The camera device can be an independent camera device such as a digital camera, or a camera module integrated in a mobile electronic device such as a mobile phone. The camera device is equipped with the camera lens group described above.

[0195] 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 the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. A camera lens assembly, including, in order from the object side to the image side along the optical axis: The first lens, the second lens, the third lens, the fourth lens and the fifth lens are characterized in that: The first lens has positive refractive power, its object side surface is convex, and its image side surface is concave; The second lens has negative optical power, and its object side surface is convex and its image side surface is concave; The third lens has an optical power; The fourth lens has positive refractive power, and its image side surface is convex; The fifth lens has negative optical power, its object side surface is convex, and its image side surface is concave; The camera lens group is specifically used for near-infrared scenes, and The wavelength value λn corresponding to 50% transmittance of the camera lens group satisfies (λn-700)(λn-800)≤0; At least one of the first lens to the fifth lens is formed of an infrared single-band material; A maximum value Vn of the dispersion coefficient of each lens from the first lens to the fifth lens satisfies Vn>1000; Among the first to fifth lenses, at least the fourth lens is formed of an infrared single-band material, and the dispersion coefficient of the fourth lens is the maximum dispersion coefficient of the first to fifth lenses.

2. The camera lens assembly according to claim 1, characterized in that: The working wavelength band of the camera lens group is 700nm to 990nm.

3. The camera lens assembly according to claim 2, characterized in that: The working wavelength band of the camera lens group is 850nm to 940nm.

4. The camera lens assembly according to claim 1, characterized in that: The total effective focal length f of the camera lens group and the effective focal length f1 of the first lens satisfy 1<f / f1<1.

5.

5. The camera lens assembly according to claim 1, characterized in that: The maximum effective radius DT11 of the object-side surface of the first lens and the maximum effective radius DT52 of the image-side surface of the fifth lens satisfy 1.5<DT52 / (DT11×2)<2.

6. The camera lens assembly according to claim 1, characterized in that: A curvature radius R9 of the object-side surface of the fifth lens and an effective focal length f5 of the fifth lens satisfy -1.5<R9 / f5<-1.

7. The camera lens assembly according to claim 1, characterized in that: A curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens satisfy 2.5<R2 / (R1×2)<3.

5.

8. The camera lens assembly according to claim 1, characterized in that: The effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens satisfy -2<f2 / f4<-1.

9. The camera lens assembly according to claim 1, characterized in that: A curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens satisfy 1.5<(R3+R4) / (R3-R4)<2.

5.

10. The camera lens assembly according to any one of claims 1 to 9, characterized in that: The sum ΣAT of air intervals between any two adjacent lenses among the first lens to the fifth lens on the optical axis and the sum ΣCT of center thicknesses of the first lens to the fifth lens on the optical axis respectively satisfy 0.3<ΣAT / ΣCT<0.

6.

11. The camera lens assembly according to any one of claims 1 to 9, characterized in that: A distance TTL from the object side surface of the first lens to the imaging surface of the camera lens group on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group ImgH satisfy TTL / ImgH<1.

6.

12. A camera lens assembly, comprising, in order from the object side to the image side along the optical axis: The first lens, the second lens, the third lens, the fourth lens and the fifth lens are characterized in that: The first lens has positive refractive power, its object side surface is convex, and its image side surface is concave; The second lens has negative optical power, and its object side surface is convex and its image side surface is concave; The third lens has an optical power; The fourth lens has positive refractive power, and its image side surface is convex; The fifth lens has negative optical power, its object side surface is convex, and its image side surface is concave; The camera lens group is specifically used for near-infrared scenes, and At least one of the first lens to the fifth lens is formed of an infrared single-band material; A maximum value Vn of the dispersion coefficient of each lens from the first lens to the fifth lens satisfies Vn>1000; Among the first to fifth lenses, at least the fourth lens is formed of an infrared single-band material, and the dispersion coefficient of the fourth lens is the maximum dispersion coefficient of the first to fifth lenses.

13. The camera lens assembly according to claim 12, characterized in that: The working wavelength band of the camera lens group is 700nm to 990nm.

14. The camera lens assembly according to claim 13, characterized in that: The working wavelength band of the camera lens group is 850nm to 940nm.

15. The camera lens assembly according to claim 12, characterized in that: The total effective focal length f of the camera lens group and the effective focal length f1 of the first lens satisfy 1<f / f1<1.

5.

16. The camera lens assembly according to claim 12, characterized in that: The maximum effective radius DT11 of the object-side surface of the first lens and the maximum effective radius DT52 of the image-side surface of the fifth lens satisfy 1.5<DT52 / (DT11×2)<2.

17. The camera lens assembly according to claim 12, characterized in that: A curvature radius R9 of the object-side surface of the fifth lens and an effective focal length f5 of the fifth lens satisfy -1.5<R9 / f5<-1.

18. The camera lens assembly according to claim 12, characterized in that: A curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens satisfy 2.5<R2 / (R1×2)<3.

5.

19. The camera lens assembly according to claim 12, characterized in that: The effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens satisfy -2<f2 / f4<-1.

20. The camera lens assembly according to claim 12, characterized in that: A curvature radius R3 of the object-side surface of the second lens and a curvature radius R4 of the image-side surface of the second lens satisfy 1.5<(R3+R4) / (R3-R4)<2.

5.

21. The camera lens assembly according to any one of claims 15 to 20, characterized in that: A wavelength value λn corresponding to a transmittance of 50% of the imaging lens group satisfies (λn-700)(λn-800)≤0.

22. The camera lens assembly according to any one of claims 12 to 20, characterized in that: The sum ΣAT of air intervals between any two adjacent lenses among the first lens to the fifth lens on the optical axis and the sum ΣCT of center thicknesses of the first lens to the fifth lens on the optical axis respectively satisfy 0.3<ΣAT / ΣCT<0.

6.

23. The camera lens assembly according to any one of claims 12 to 20, characterized in that: A distance TTL from the object side surface of the first lens to the imaging surface of the camera lens group on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the camera lens group ImgH satisfy TTL / ImgH<1.6.

Images