Optical camera lens assembly

Abstract

This application discloses an optical camera lens assembly, which includes, in sequence along the optical axis from the object side to the image side: a first lens with positive optical power; a second lens with negative optical power; a third lens with negative optical power; a fourth lens with optical power; a fifth lens with negative optical power; and a sixth lens with optical power; wherein the first and second lenses constitute a first lens group, and the third to sixth lenses constitute a second lens group, the spacing between the second lens group and the first lens group in the optical axis direction is adjustable, so that the optical camera lens assembly can switch between a near-field mode and a far-field mode; and the effective focal length f5 of the fifth lens, the radius of curvature R9 of the object side surface of the fifth lens, and the center thickness CT5 of the fifth lens in the optical axis satisfy: 1.5 < f5 / (R9+CT5) < 3.5.

Description

Technical Field

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

[0002] Currently, optical camera lens assemblies are designed based on the fundamental assumption of the pinhole imaging model, meaning the imaging position is near the focal point of the lens assembly. Based on this assumption, to ensure that the same object at different distances from the lens assembly can still produce an image of the same size on the imaging plane, a lens assembly with short focal length characteristics is needed when the object is close to the lens assembly, and a lens assembly with long focal length characteristics is needed when the object is far from the lens assembly.

[0003] In some related technologies, to simultaneously meet the needs of telephoto and close-up modes, at least two lens groups with different focal length characteristics can be used. However, this makes it difficult to achieve both a slim and lightweight design and low cost. Zoom lens groups can also be used, but these are more difficult to manufacture and struggle to maintain optimal image quality and resolution. Summary of the Invention

[0004] This application provides an optical camera lens assembly comprising: a first lens with positive optical power; a second lens with negative optical power; a third lens with negative optical power; a fourth lens with optical power; a fifth lens with negative optical power; and a sixth lens with optical power. The first and second lenses constitute a first lens assembly, and the third to sixth lenses constitute a second lens assembly. The spacing between the second lens assembly and the first lens assembly along the optical axis is adjustable, allowing the optical camera lens assembly to switch between close-range and long-range modes. Furthermore, the effective focal length f5 of the fifth lens, the radius of curvature R9 of the object-side surface of the fifth lens, and the center thickness CT5 of the fifth lens along the optical axis satisfy: 1.5 < f5 / (R9+CT5) < 3.5.

[0005] In some implementations, the effective focal length f2 of the second lens and half of the maximum field of view (Semi-FOV) of the optical camera lens group in telephoto mode are... IN And the effective focal length f1 of the first lens satisfies: -11.0 < f2 / (tan(Semi-FOV) IN )×f1)<-6.5.

[0006] In some implementations, the optical camera lens assembly is in close-range mode at half the maximum field of view (Semi-FOV). w Satisfies: -11.5 < f2 / (Tan(Semi-FOV) W )×f1)<-6.5.

[0007] In some implementations, the total effective focal length f of the optical camera lens assembly in telephoto mode IN Satisfies: -4.5 <f5 / f IN <-2.0.

[0008] In some implementations, the total effective focal length f of the optical camera lens assembly in close-up mode W Satisfies: -5.0 <f5 / f W <-2.5.

[0009] In some embodiments, the distance T23 between the second and third lenses on the optical axis in the long-distance mode IN The spacing between the third and fourth lenses on the optical axis and the center thickness CT3 of the third lens on the optical axis satisfy: 1.5 < (T23) IN +T34) / CT3<4.0.

[0010] In some embodiments, the distance T23 between the second and third lenses on the optical axis in close-range mode W Satisfy: 2.0 < (T23) W +T34) / CT3<5.5.

[0011] In some embodiments, the radius of curvature R7 of the object-side surface of the fourth lens, the effective focal length f3 of the third lens, the radius of curvature R6 of the image-side surface of the third lens, and the aperture value FNO of the optical camera lens assembly in telephoto mode are specified. IN Satisfies: 2.0 < (R7 - f3) / (R6 × FNO) IN <5.0.

[0012] In some implementations, the aperture value FNO of the optical camera lens assembly in close-up mode is... w Satisfies: 1.9 < (R7 - f3) / (R6 × FNO) W <5.0.

[0013] In some embodiments, the radius of curvature R8 of the image-side surface of the fourth lens, the radius of curvature R11 of the object-side surface of the sixth lens, and the total effective focal length f of the optical camera lens assembly in telephoto mode are all specified. IN Satisfies: 1.5 < (R8 + R11) / f IN <8.0.

[0014] In some implementations, the total effective focal length f of the optical camera lens assembly in close-up mode W Satisfies: 2.0 < (R8 + R11) / f W <8.5.

[0015] In some embodiments, the sum of the optical axis spacing between any two adjacent lenses among the first to sixth lenses in the long-distance mode is ∑AT. IN The optical axis spacing T45 between the fourth and fifth lenses and T56 between the fifth and sixth lenses satisfy: 1.5 < ∑AT IN / (T45+T56)<2.5.

[0016] In some embodiments, the sum of the optical axis spacing between any two adjacent lenses among the first to sixth lenses in close-range mode is ∑AT. w Satisfies: 2.0 < ∑AT W / (T45+T56)<3.0.

[0017] In some embodiments, the radius of curvature R3 of the object side of the second lens, the radius of curvature R4 of the image side of the second lens, and the center thickness CT2 of the second lens on the optical axis satisfy: -28.5 < (R3 + R4) / CT2 < -23.0.

[0018] In some embodiments, the radius of curvature R6 of the image-side surface of the third lens satisfies the same condition as the radius of curvature R1 of the object-side surface of the first lens: 1.2 <R6 / R1<2.0。

[0019] In the exemplary embodiments of this application, by reasonably controlling the optical power of each lens and the grouping of each lens, the size and imaging quality of the optical camera lens assembly can be effectively balanced. Furthermore, it is beneficial to reduce the height of the first and second lens groups, effectively correcting aberrations in the lens assembly, resulting in good imaging quality in both long-range and short-range modes. Simultaneously, it can reduce the tolerance sensitivity of the lens assembly and lower its manufacturing cost. By ensuring that the optical camera lens assembly satisfies 1.5 < f5 / (R9+CT5) < 3.5, it is beneficial to balance astigmatism and distortion between the fifth lens and the imaging plane, helping the lens assembly maintain better imaging quality. It also effectively reduces the processing difficulty of the fifth lens and improves the overall resolving power of the lens assembly. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1A and Figure 1B The diagrams show the structure of the optical camera lens assembly in both long-range and short-range modes of Embodiment 1.

[0022] Figures 2A to 2DThe on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens group of Embodiment 1 in remote mode are shown respectively.

[0023] Figures 3A to 3D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens group of Embodiment 1 in close-range mode are shown respectively.

[0024] Figure 4A and Figure 4B The schematic diagrams of the optical camera lens assembly in Embodiment 2 in both long-range and short-range modes are shown respectively.

[0025] Figures 5A to 5D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens assembly in Example 2 in remote mode are shown respectively.

[0026] Figures 6A to 6D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens group of Embodiment 2 in close-range mode are shown respectively.

[0027] Figure 7A and Figure 7B The schematic diagrams of the optical camera lens assembly in Embodiment 3 in both long-distance and short-distance modes are shown respectively.

[0028] Figures 8A to 8D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens group of Example 3 in remote mode are shown respectively.

[0029] Figures 9A to 9D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens group of Example 3 in close-range mode are shown respectively.

[0030] Figure 10A and Figure 10B The schematic diagrams of the optical camera lens assembly in embodiment 4 in both long-distance and short-distance modes are shown respectively.

[0031] Figures 11A to 11D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens group of Example 4 in remote mode are shown respectively.

[0032] Figures 12A to 12D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens group of Example 4 in close-range mode are shown respectively.

[0033] Figure 13A and Figure 13BThe diagrams show the optical camera lens assembly of Embodiment 5 in both long-range and short-range modes.

[0034] Figures 14A to 14D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens group of Example 5 in remote mode are shown respectively.

[0035] Figures 15A to 15D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens group of Example 5 in close-range mode are shown respectively.

[0036] Figure 16A and Figure 16B The schematic diagrams of the optical camera lens assembly in Embodiment 6 in both long-distance and short-distance modes are shown respectively.

[0037] Figures 17A to 17D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens assembly of Embodiment 6 in telephoto mode are shown respectively; and

[0038] Figures 18A to 18D The on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical camera lens assembly of Example 6 in close-range mode are shown respectively. Detailed Implementation

[0039] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of this application, the first lens discussed below may also be referred to as the second lens or the third lens.

[0041] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0042] In this article, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the location of the concaveness is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0043] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0044] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense, unless expressly so specified herein.

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. The following embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be pointed out that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] The features, principles and other aspects of this application are described in detail below.

[0047] An optical camera lens assembly according to an exemplary embodiment of this application may include six lenses with optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. These six lenses are arranged sequentially along the optical axis from the object side to the image side. Any two adjacent lenses among the first to sixth lenses may have a spacing distance.

[0048] In an exemplary embodiment, the first lens may have positive optical power; the second lens may have negative optical power; the third lens may have negative optical power; the fourth lens may have either positive or negative optical power; the fifth lens may have negative optical power; and the sixth lens may have either positive or negative optical power. The first and second lenses constitute a first lens group, and the third to sixth lenses constitute a second lens group. Exemplarily, a fixed spacing can be maintained between the lenses within the first and second lens groups. The spacing between the second lens group and the first lens group in the optical axis direction can be adjusted to adjust the total effective focal length of the optical camera lens group.

[0049] By adopting the aforementioned optical power and grouping configuration, the size and image quality of the optical camera lens assembly can be effectively balanced. On one hand, the length and aperture of the lens assembly can be effectively shortened. On the other hand, good image quality of the lens assembly can be guaranteed. Furthermore, it facilitates a reduction in the height of the first and second lens groups, effectively correcting lens aberrations and resulting in good image quality in both long-distance (e.g., at infinity) and short-distance (e.g., at 100mm) modes. Simultaneously, it reduces the tolerance sensitivity of the lens assembly, lowering its manufacturing cost.

[0050] In an exemplary embodiment, the optical camera lens assembly according to this application satisfies: 1.5 < f5 / (R9+CT5) < 3.5, where f5 is the effective focal length of the fifth lens, R9 is the radius of curvature of the object-side surface of the fifth lens, and CT5 is the center thickness of the fifth lens on the optical axis. Satisfying 1.5 < f5 / (R9+CT5) < 3.5 in the optical camera lens assembly helps balance astigmatism and distortion between the fifth lens and the imaging plane, contributing to better image quality. Furthermore, by controlling the radius of curvature R9 of the object-side surface of the fifth lens within a reasonable range, the manufacturing difficulty of the fifth lens can be effectively reduced. On the other hand, satisfying the above condition helps control the vignetting value of the lens assembly, improving the overall resolving power of the lens assembly by intercepting light rays with poor imaging quality. More specifically, f5, R9, and CT5 can further satisfy: 1.8 < f5 / (R9+CT5) < 3.3.

[0051] In an exemplary embodiment, the optical camera lens assembly according to this application can satisfy: -11.0 < f2 / (tan(Semi-FOV) IN (f1) < -6.5, where f2 is the effective focal length of the second lens, Semi-FOV IN It is half the maximum field of view of the optical camera lens assembly in telephoto mode, and f1 is the effective focal length of the first lens. The optical camera lens assembly satisfies -11.0 < f2 / (tan(Semi-FOV)). INWith a focal length of f1 < -6.5, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens can be controlled within a reasonable range, which is beneficial for the lens assembly to gather more light. On the other hand, it can achieve a semi-FOV of half the maximum field of view of the optical camera lens assembly in telephoto mode. IN By controlling the image range within a reasonable range, the imaging range of the lens assembly can be effectively controlled, thereby ensuring that the lens assembly can accurately acquire the optical signal of the subject. Furthermore, satisfying the above conditions allows the lens assembly to obtain a larger image plane to match a larger imaging area, resulting in better image quality.

[0052] In an exemplary embodiment, the optical camera lens assembly according to this application satisfies: -11.5 < f2 / (tan(Semi-FOV) W (f1) < -6.5, where f2 is the effective focal length of the second lens, Semi-FOV w It is half the maximum field of view of the optical camera lens group in close-up mode, and f1 is the effective focal length of the first lens. The optical camera lens group satisfies -11.5 < f2 / (Tan(Semi-FOV)). W With f1 < -6.5, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens can be controlled within a reasonable range, which is beneficial for the lens assembly to gather more light. On the other hand, it can achieve a semi-FOV of half the maximum field of view of the optical camera lens assembly in close-range mode. IN By controlling the image within a reasonable range, the imaging range of the lens assembly can be effectively controlled, thereby ensuring that the lens assembly can accurately acquire the optical signal of the subject. Furthermore, satisfying the above conditions allows the lens assembly to obtain a larger image plane to match a larger imaging area, resulting in better image quality. More specifically, f / 2, Semi-FOV w Furthermore, f1 can satisfy: -11.5 < f2 / (tan(Semi-FOV) IN )×f1)<-6.8.

[0053] In an exemplary embodiment, the optical camera lens assembly according to this application can satisfy: -4.5 <f5 / f IN <-2.0, where f5 is the effective focal length of the fifth lens, f IN This is the total effective focal length of the optical camera lens assembly in telephoto mode. The optical camera lens assembly meets the requirement of -4.5. <f5 / f IN <-2.0, on the one hand, can reduce the sensitivity of the fifth lens and avoid overly strict tolerance requirements. On the other hand, it can effectively balance the spherical aberration, chromatic aberration, and astigmatism generated by the fifth lens, thereby improving the image quality of the entire lens group in telephoto mode and achieving better resolution. More specifically, f5 and f...IN Further, -4.2 can be achieved. <f5 / f IN <-2.3.

[0054] In an exemplary embodiment, the optical camera lens assembly according to this application can satisfy: -5.0 <f5 / f W <-2.5, where f5 is the effective focal length of the fifth lens, f W This is the total effective focal length of the optical camera lens assembly in close-up mode. The optical camera lens assembly meets -5.0. <f5 / f W A f / 2.5 aperture, on the one hand, reduces the sensitivity of the fifth lens, avoiding overly stringent tolerance requirements. On the other hand, it effectively balances the spherical aberration, chromatic aberration, and astigmatism generated by the fifth lens, thereby improving the overall image quality of the lens group in close-up mode and achieving better resolution. More specifically, f / 5 and f / 2.5... W Further, it can meet -4.7. <f5 / f W <-2.6.

[0055] In an exemplary embodiment, the optical camera lens assembly according to this application satisfies: 1.5 < (T23) IN +T34) / CT3<4.0, where T23 IN T23 is the distance between the second and third lenses on the optical axis in long-range mode, T34 is the distance between the third and fourth lenses on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. The optical camera lens group satisfies 1.5 < (T23) IN The ratio +T34) / CT3 < 4.0 allows for reasonable control of the distance between the first and second lens groups on the optical axis in long-range mode, resulting in better image quality. It also ensures good homogeneity of the lens group, reduces light refraction within the lenses, and effectively reduces the thickness sensitivity of the lens group, thus contributing to field curvature stability.

[0056] In an exemplary embodiment, the optical camera lens assembly according to this application satisfies: 2.0 < (T23) W +T34) / CT3<5.5, where T23 w T23 is the distance between the second and third lenses on the optical axis in close-range mode, T34 is the distance between the third and fourth lenses on the optical axis, and CT3 is the center thickness of the third lens on the optical axis. The optical camera lens group satisfies 2.0 < (T23) WWith a value of +T34) / CT3 < 5.5, the distance between the first and second lens groups on the optical axis can be reasonably controlled in close-range mode, resulting in better image quality for the lens group in close-range mode. Simultaneously, it ensures good homogeneity of the lens group, reduces the degree of light refraction within the lenses, and effectively reduces the thickness sensitivity of the lens group, which is beneficial to the stability of field curvature.

[0057] In an exemplary embodiment, the optical camera lens assembly according to this application satisfies: 2.0 < (R7 - f3) / (R6 × FNO) IN ) < 5.0, where R7 is the radius of curvature of the object-side surface of the fourth lens, f3 is the effective focal length of the third lens, R6 is the radius of curvature of the image-side surface of the third lens, and FNO IN This is the aperture value of the optical camera lens assembly in telephoto mode. The optical camera lens assembly satisfies 2.0 < (R7 - f3) / (R6 × fNO). IN A aperture value of <5.0 allows for a reasonable allocation of the lens group's optical power and entrance pupil diameter, ensuring that the lens group has both a small size and a reasonable aperture value. This enables the lens group to have good light-gathering ability in telephoto mode and also helps to improve the resolution of the lens group.

[0058] In an exemplary embodiment, the optical camera lens assembly according to this application can satisfy: 1.9 < (R7 - f3) / (R6 × FNO) W ) < 5.0, where R7 is the radius of curvature of the object-side surface of the fourth lens, f3 is the effective focal length of the third lens, R6 is the radius of curvature of the image-side surface of the third lens, and FNO w This is the aperture value of the optical camera lens group in close-up mode. The optical camera lens group satisfies 1.9 < (R7 - f3) / (R6 × fNO). W A aperture value of <5.0 allows for a reasonable allocation of the lens group's optical power and entrance pupil diameter, ensuring that the lens group has both a small size and a reasonable aperture value. This enables the lens group to have good light-gathering ability in close-up mode and also helps to improve the resolution of the lens group.

[0059] In an exemplary embodiment, the optical camera lens assembly according to this application satisfies: 1.5 < (R8 + R11) / f IN <8.0 Where R8 is the radius of curvature of the image-side surface of the fourth lens, R11 is the radius of curvature of the object-side surface of the sixth lens, f IN This is the total effective focal length of the optical camera lens assembly in telephoto mode. The optical camera lens assembly satisfies 1.5 < (R8 + R11) / f. INA value <8.0 is beneficial for improving the resolving power of the lens group, enabling it to achieve higher image quality and resolution in telephoto mode. Simultaneously, it helps reduce the tolerance sensitivity of the sixth lens, avoiding overly stringent tolerance requirements and thus helping to balance distortion and astigmatism issues across the entire lens group.

[0060] In an exemplary embodiment, the optical camera lens assembly according to this application satisfies: 2.0 < (R8 + R11) / f W <8.5, where R8 is the radius of curvature of the image-side surface of the fourth lens, R11 is the radius of curvature of the object-side surface of the sixth lens, and f IN This is the total effective focal length of the optical camera lens group in close-up mode. The optical camera lens group satisfies 2.0 < (R8 + R11) / f W A value <8.5 is beneficial for improving the resolving power of the lens group, enabling it to achieve higher image quality and resolution in close-up mode. Simultaneously, it helps reduce the tolerance sensitivity of the sixth lens, avoiding overly stringent tolerance requirements and thus helping to balance distortion and astigmatism issues across the entire lens group.

[0061] In an exemplary embodiment, the optical camera lens assembly according to this application satisfies: 1.5 < ∑AT IN / (T45+T56)<2.5, where ∑AT IN In long-range mode, T45 is the sum of the optical axis spacing between any two adjacent lenses from the first to the sixth lens. T56 is the optical axis spacing between the fourth and fifth lenses. The optical camera lens group satisfies: 1.5 < ∑AT IN A value of / (T45+T56) < 2.5 is beneficial for balancing lens distortion, reducing ghost energy between the fifth and sixth lenses, and ensuring better image quality in telephoto mode. Furthermore, meeting these conditions also facilitates the molding and adjustment process, avoiding the risk of stray light.

[0062] In an exemplary embodiment, the optical camera lens assembly according to this application can satisfy: 2.0 < ∑AT W / (T45+T56)<3.0, where ∑AT w It is the sum of the optical axis spacing between any two adjacent lenses from the first to the sixth lens in close-range mode. T45 is the optical axis spacing between the fourth and fifth lenses, and T56 is the optical axis spacing between the fifth and sixth lenses. The optical camera lens group satisfies: 2.0 < ∑AT W / (T45 + T56) < 3.0 is beneficial to balancing the distortion of the lens group, reducing the ghost image energy between the fifth lens and the sixth lens, and is beneficial to ensuring that the lens group in the telephoto mode has better imaging quality. In addition, satisfying the above conditional formula is also beneficial to the molding debugging process and avoiding the risk of stray light generation.

[0063] In an exemplary embodiment, the optical imaging lens group according to the present application can satisfy: -28.5 < (R3 + R4) / CT2 < -23.0, where R3 is the curvature radius of the object side surface of the second lens, R4 is the curvature radius of the image side surface of the second lens, and CT2 is the central thickness of the second lens on the optical axis. The optical imaging lens group satisfying -28.5 < (R3 + R4) / CT2 < -23.0 can reduce the deflection angle of the light passing through the second lens, reduce the sensitivity of the second lens, and at the same time can also reduce the astigmatism and distortion generated when the light passes through the second lens. In addition, it can also avoid excessive sagittal height of the second lens, which is beneficial to improving the processing manufacturability of the lens group.

[0064] In an exemplary embodiment, the optical imaging lens group according to the present application can satisfy: 1.2 < R6 / R1 < 2.0, where R6 is the curvature radius of the image side surface of the third lens and R1 is the curvature radius of the object side surface of the first lens. The optical imaging lens group satisfying 1.2 < R6 / R1 < 那么2.0 can slow down the deflection of light in the first lens, thereby reducing the sensitivity of the first lens, and can also reduce the spherical aberration generated by the third lens. In addition, it can also avoid excessive surface tilt angle of the lens due to too steep light, which is beneficial to reducing the process difficulty in actual processing and molding. More specifically, R6 and R1 can further satisfy 1.2 < R6 / R1 < 1.9.

[0065] In an exemplary embodiment, the optical imaging lens group according to the present application further includes an aperture disposed between the first lens and the second lens. Optionally, the above optical imaging lens group may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0066] This application proposes an optical camera lens assembly that exhibits good imaging quality, miniaturization, ease of manufacturing, and high resolution in both long-range and short-range modes. The optical camera lens assembly according to the above-described embodiment of this application can employ multiple lenses, such as the six lenses mentioned above. By rationally allocating the optical power, surface shape, material, center thickness of each lens, on-axis spacing between lenses, and grouping the lenses, the size and imaging quality of the optical camera lens assembly can be effectively balanced. Furthermore, it facilitates reducing the height of the first and second lens groups, effectively correcting aberrations in the lens assembly, resulting in good imaging quality in both long-range and short-range modes. Simultaneously, it reduces the tolerance sensitivity of the lens assembly, lowering manufacturing costs. By ensuring that the optical camera lens assembly satisfies 1.5 < f5 / (R9+CT5) < 3.5, it helps balance astigmatism and distortion between the fifth lens and the imaging plane, contributing to better imaging quality, effectively reducing the manufacturing difficulty of the fifth lens, and improving the overall resolution of the lens assembly.

[0067] In embodiments of this application, at least one of the mirror surfaces of each lens is an aspherical mirror surface; that is, at least one mirror surface from the object-side surface of the first lens to the image-side surface of the sixth lens is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better radius of curvature characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, at least one of the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, and sixth lenses is an aspherical mirror surface. Optionally, both the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, and sixth lenses are aspherical mirror surfaces.

[0068] However, those skilled in the art will understand that the number of lenses constituting the optical camera lens assembly can be changed without departing from the technical solutions claimed in this application to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiment, the optical camera lens assembly is not limited to including six lenses. If desired, the optical camera lens assembly may also include other numbers of lenses.

[0069] The following describes in further detail, with reference to the accompanying drawings, specific embodiments of the optical camera lens assembly applicable to the above-described embodiments.

[0070] Example 1

[0071] The following is for reference Figures 1A to 3DThe optical camera lens assembly according to Embodiment 1 of this application is described. Figure 1A and Figure 1B The optical camera lens assembly in long-range mode and short-range mode in Embodiment 1 are shown respectively.

[0072] like Figure 1A and Figure 1B As shown, the optical camera lens assembly, from the object side to the image side, includes, in sequence: a first lens E1, an aperture stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging plane S15. The first lens E1 and the second lens E2 constitute the first lens group, and the third to sixth lenses E3 constitute the second lens group. Exemplarily, the first lens E1 and the second lens E2 within the first lens group may have a fixed interval in the optical axis direction, and any two adjacent lenses among the third to sixth lenses E6 within the second lens group may have a fixed interval in the optical axis direction. The interval in the optical axis direction between the second lens group and the first lens group is adjustable to adjust the total effective focal length of the optical camera lens assembly. That is, the optical axis spacing T23 between the second lens E2 and the third lens E3 is variable, and the optical axis spacing T between the sixth lens E6 and the filter E6 varies with the optical axis spacing T23 between the second lens E2 and the third lens E3. With the first and second lens groups configured as described above, the optical camera lens group can achieve good imaging quality in both long-distance mode (e.g., at infinity) and short-distance mode (e.g., at 100 mm).

[0073] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0074] Table 1 shows some basic parameters of the optical camera lens assembly of Example 1, where the units for radius of curvature, thickness / distance, and focal length are millimeters (mm).

[0075]

[0076] Table 1

[0077] Table 2 shows the overall parameters and some other basic parameters of the optical camera lens assembly of Example 1 at an infinity object distance and at an object distance of 100 mm. The units for the total effective focal length f of the optical camera lens assembly, the distance T23 between the second lens E2 and the third lens E3 on the optical axis, and the distance T between the sixth lens E6 and the filter E6 on the optical axis are all millimeters (mm). The unit for half of the maximum field of view (Semi-FOV) of the optical camera lens assembly is degrees (°).

[0078]

[0079] Table 2

[0080] In Embodiment 1, the object-side surface and image-side surface of any one of the first lens E1 to the sixth lens E6 are aspherical, and the surface shape of each aspherical lens is... The following aspherical formulas can be used for limitation:

[0081] (1)

[0082] in, For an aspherical surface along the optical axis at a height of h When the position is such that the distance from the vertex of the non-spherical surface is the sag; c For the paraxial curvature of an aspherical surface, c =1 / R (i.e., paraxial curvature) c (The reciprocal of the radius of curvature R in Table 1 above). k The conic coefficient; Ai Is it an aspherical first i -th order correction coefficients. Tables 3-1 and 3-2 below give the higher-order coefficients that can be used for the aspherical mirrors S1 to S12 in Example 1. A4 , A6 , A8 , A10 , A12 , A14 , A16 , A18 , A20 , A22 , A24 , A26 , A28 and A30 .

[0083]

[0084] Table 3-1

[0085]

[0086] Table 3-2

[0087] Figure 2A and Figure 3A The on-axis chromatic aberration curves of the optical camera lens assembly of Embodiment 1 in both long-range and short-range modes are shown, indicating the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 2B and Figure 3B The astigmatism curves of the optical camera lens assembly of Embodiment 1 in long-range mode and short-range mode are shown respectively, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 2C and Figure 3C The distortion curves of the optical camera lens group of Embodiment 1 in long-range mode and short-range mode are shown respectively, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 2D and Figure 3D The magnification chromatic aberration curves of the optical camera lens assembly of Embodiment 1 in both long-range and short-range modes are shown, representing the deviation of light at different image heights on the imaging plane after passing through the optical camera lens assembly. According to... Figures 2A to 3D It can be seen that the optical camera lens assembly given in Example 1 can achieve good imaging quality.

[0088] Example 2

[0089] The following is for reference Figures 4A to 6D This application describes an optical camera lens assembly according to Embodiment 2. For the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted in this embodiment and the following embodiments. Figure 4A and Figure 4B The optical camera lens assembly in long-range mode and short-range mode in Embodiment 2 are shown respectively.

[0090] like Figure 4A and Figure 4BAs shown, the optical camera lens assembly, from the object side to the image side, includes, in sequence: a first lens E1, an aperture stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging plane S15. The first lens E1 and the second lens E2 constitute the first lens group, and the third to sixth lenses E3 constitute the second lens group. Exemplarily, the first lens E1 and the second lens E2 within the first lens group may have a fixed interval in the optical axis direction, and any two adjacent lenses among the third to sixth lenses E6 within the second lens group may have a fixed interval in the optical axis direction. The interval in the optical axis direction between the second lens group and the first lens group is adjustable to adjust the total effective focal length of the optical camera lens assembly. That is, the optical axis spacing T23 between the second lens E2 and the third lens E3 is variable, and the optical axis spacing T between the sixth lens E6 and the filter E6 varies with the optical axis spacing T23 between the second lens E2 and the third lens E3. With the first and second lens groups configured as described above, the optical camera lens group can achieve good imaging quality in both long-distance mode (e.g., at infinity) and short-distance mode (e.g., at 100 mm).

[0091] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has negative optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0092] Table 4 shows some basic parameters of the optical camera lens assembly of Example 2. The units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Table 5 shows the overall parameters and some other basic parameters of the optical camera lens assembly of Example 2 at an infinity object distance and at an object distance of 100 mm. The units for the total effective focal length f of the optical camera lens assembly, the distance T23 between the second lens E2 and the third lens E3 on the optical axis, and the distance T between the sixth lens E6 and the filter E6 on the optical axis are millimeters (mm). The unit for half of the maximum field of view (Semi-FOV) of the optical camera lens assembly is degrees (°). Tables 6-1 and 6-2 show the higher-order coefficients applicable to each aspherical mirror in Example 2, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0093]

[0094] Table 4

[0095]

[0096] Table 5

[0097]

[0098] Table 6-1

[0099]

[0100] Table 6-2

[0101] Figure 5A and Figure 6A The on-axis chromatic aberration curves of the optical camera lens assembly of Embodiment 2 in both long-range and short-range modes are shown, indicating the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 5B and Figure 6B The astigmatism curves of the optical camera lens assembly of Embodiment 2 in long-range and short-range modes are shown respectively, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 5C and Figure 6C The distortion curves of the optical camera lens group of Embodiment 2 in long-range mode and short-range mode are shown respectively, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 5D and Figure 6D The magnification chromatic aberration curves of the optical camera lens assembly in Example 2 are shown in both long-range and short-range modes, representing the deviation of light at different image heights on the imaging plane after passing through the optical camera lens assembly. According to... Figures 5A to 6D It can be seen that the optical camera lens assembly given in Example 2 can achieve good imaging quality.

[0102] Example 3

[0103] The following is for reference Figures 7A to 9D The optical camera lens assembly according to Embodiment 3 of this application is described. Figure 7A and Figure 7B The optical camera lens assembly in long-distance mode and short-distance mode in Embodiment 3 are shown respectively.

[0104] like Figure 7A and Figure 7B As shown, the optical camera lens assembly, from the object side to the image side, includes, in sequence: a first lens E1, an aperture stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging plane S15. The first lens E1 and the second lens E2 constitute the first lens group, and the third to sixth lenses E3 constitute the second lens group. Exemplarily, the first lens E1 and the second lens E2 within the first lens group may have a fixed interval in the optical axis direction, and any two adjacent lenses among the third to sixth lenses E6 within the second lens group may have a fixed interval in the optical axis direction. The interval in the optical axis direction between the second lens group and the first lens group is adjustable to adjust the total effective focal length of the optical camera lens assembly. That is, the optical axis spacing T23 between the second lens E2 and the third lens E3 is variable, and the optical axis spacing T between the sixth lens E6 and the filter E6 varies with the optical axis spacing T23 between the second lens E2 and the third lens E3. With the first and second lens groups configured as described above, the optical camera lens group can achieve good imaging quality in both long-distance mode (e.g., at infinity) and short-distance mode (e.g., at 100 mm).

[0105] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0106] Table 7 shows some basic parameters of the optical camera lens assembly of Example 3. The units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Table 8 shows the overall parameters and some other basic parameters of the optical camera lens assembly of Example 3 at an infinity object distance and at an object distance of 100 mm. The units for the total effective focal length f of the optical camera lens assembly, the distance T23 between the second lens E2 and the third lens E3 on the optical axis, and the distance T between the sixth lens E6 and the filter E6 on the optical axis are millimeters (mm). The unit for half of the maximum field of view (Semi-FOV) of the optical camera lens assembly is degrees (°). Tables 9-1 and 9-2 show the higher-order coefficients applicable to each aspherical mirror in Example 3, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0107]

[0108] Table 7

[0109]

[0110] Table 8

[0111]

[0112] Table 9-1

[0113]

[0114] Table 9-2

[0115] Figure 8A and Figure 9A The on-axis chromatic aberration curves of the optical camera lens assembly of Embodiment 3 in both long-range and short-range modes are shown, indicating the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8B and Figure 9B The astigmatism curves of the optical camera lens assembly of Embodiment 3 in long-range mode and short-range mode are shown respectively, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 8C and Figure 9C The distortion curves of the optical camera lens group of Embodiment 3 in long-range mode and short-range mode are shown respectively, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 8D and Figure 9D The magnification chromatic aberration curves of the optical camera lens assembly in Example 3 are shown in both long-range and short-range modes, representing the deviation of light at different image heights on the imaging plane after passing through the optical camera lens assembly. According to... Figures 8A to 9D It can be seen that the optical camera lens assembly given in Example 3 can achieve good imaging quality.

[0116] Example 4

[0117] The following is for reference Figures 10A to 12D The optical camera lens assembly according to Embodiment 4 of this application is described. Figure 10A and Figure 10B The optical camera lens assembly in long-range mode and short-range mode in Embodiment 4 are shown respectively.

[0118] like Figure 10A and Figure 10B As shown, the optical camera lens assembly, from the object side to the image side, includes, in sequence: a first lens E1, an aperture stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging plane S15. The first lens E1 and the second lens E2 constitute the first lens group, and the third to sixth lenses E3 constitute the second lens group. Exemplarily, the first lens E1 and the second lens E2 within the first lens group may have a fixed interval in the optical axis direction, and any two adjacent lenses among the third to sixth lenses E6 within the second lens group may have a fixed interval in the optical axis direction. The interval in the optical axis direction between the second lens group and the first lens group is adjustable to adjust the total effective focal length of the optical camera lens assembly. That is, the optical axis spacing T23 between the second lens E2 and the third lens E3 is variable, and the optical axis spacing T between the sixth lens E6 and the filter E6 varies with the optical axis spacing T23 between the second lens E2 and the third lens E3. With the first and second lens groups configured as described above, the optical camera lens group can achieve good imaging quality in both long-distance mode (e.g., at infinity) and short-distance mode (e.g., at 100 mm).

[0119] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has negative optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0120] Table 10 shows some basic parameters of the optical camera lens assembly of Example 4. The units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Table 11 shows the overall parameters and some other basic parameters of the optical camera lens assembly of Example 4 at an infinity object distance and at an object distance of 100mm. The units for the total effective focal length f of the optical camera lens assembly, the distance T23 between the second lens E2 and the third lens E3 on the optical axis, and the distance T between the sixth lens E6 and the filter E6 on the optical axis are millimeters (mm). The unit for half of the maximum field of view (Semi-FOV) of the optical camera lens assembly is degrees (°). Tables 12-1 and 12-2 show the higher-order coefficients applicable to each aspherical mirror in Example 4, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0121]

[0122] Table 10

[0123]

[0124] Table 11

[0125]

[0126] Table 12-1

[0127]

[0128] Table 12-2

[0129] Figure 11A and Figure 12A The on-axis chromatic aberration curves of the optical camera lens assembly of Embodiment 4 in both long-range and short-range modes are shown, indicating the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 11B and Figure 12B The astigmatism curves of the optical camera lens assembly of Embodiment 4 in long-range mode and short-range mode are shown respectively, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 11C and Figure 12C The distortion curves of the optical camera lens group of Example 4 in long-range mode and short-range mode are shown respectively, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 11D and Figure 12D The magnification chromatic aberration curves of the optical camera lens assembly in Example 4 are shown in both long-range and short-range modes, representing the deviation of light at different image heights on the imaging plane after passing through the optical camera lens assembly. According to... Figures 11A to 12D It can be seen that the optical camera lens assembly given in Example 4 can achieve good imaging quality.

[0130] Example 5

[0131] The following is for reference Figures 13A to 15D The optical camera lens assembly according to Embodiment 5 of this application is described. Figure 13A and Figure 13B The optical camera lens assembly in long-distance mode and short-distance mode in Embodiment 5 are shown respectively.

[0132] like Figure 13A and Figure 13B As shown, the optical camera lens assembly, from the object side to the image side, includes, in sequence: a first lens E1, an aperture stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging plane S15. The first lens E1 and the second lens E2 constitute the first lens group, and the third to sixth lenses E3 constitute the second lens group. Exemplarily, the first lens E1 and the second lens E2 within the first lens group may have a fixed interval in the optical axis direction, and any two adjacent lenses among the third to sixth lenses E6 within the second lens group may have a fixed interval in the optical axis direction. The interval in the optical axis direction between the second lens group and the first lens group is adjustable to adjust the total effective focal length of the optical camera lens assembly. That is, the optical axis spacing T23 between the second lens E2 and the third lens E3 is variable, and the optical axis spacing T between the sixth lens E6 and the filter E6 varies with the optical axis spacing T23 between the second lens E2 and the third lens E3. With the first and second lens groups configured as described above, the optical camera lens group can achieve good imaging quality in both long-distance mode (e.g., at infinity) and short-distance mode (e.g., at 100 mm).

[0133] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being convex. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0134] Table 13 shows some basic parameters of the optical camera lens assembly of Example 5. The units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Table 14 shows the overall parameters and some other basic parameters of the optical camera lens assembly of Example 5 at infinity and at 100mm. The units for the total effective focal length f of the optical camera lens assembly, the distance T23 between the second lens E2 and the third lens E3 on the optical axis, and the distance T between the sixth lens E6 and the filter E6 on the optical axis are millimeters (mm). The unit for half of the maximum field of view (Semi-FOV) of the optical camera lens assembly is degrees (°). Tables 15-1 and 15-2 show the higher-order coefficients applicable to each aspherical mirror in Example 5, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0135]

[0136] Table 13

[0137]

[0138] Table 14

[0139]

[0140] Table 15-1

[0141]

[0142] Table 15-2

[0143] Figure 14A and Figure 15A The on-axis chromatic aberration curves of the optical camera lens assembly of Embodiment 5 in both long-range and short-range modes are shown, indicating the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 14B and Figure 15B The astigmatism curves of the optical camera lens assembly of Embodiment 5 in long-range mode and short-range mode are shown respectively, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 14C and Figure 15C The distortion curves of the optical camera lens group of Embodiment 5 in long-distance mode and short-distance mode are shown respectively, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 14D and Figure 15D The magnification chromatic aberration curves of the optical camera lens assembly of Embodiment 5 in both long-range and short-range modes are shown, representing the deviation of light at different image heights on the imaging plane after passing through the optical camera lens assembly. According to... Figures 14A to 15D It can be seen that the optical camera lens assembly given in Example 5 can achieve good imaging quality.

[0144] Example 6

[0145] The following is for reference Figures 16A to 18D The optical camera lens assembly according to Embodiment 6 of this application is described. Figure 16A and Figure 16B The optical camera lens assembly in long-distance mode and short-distance mode in Embodiment 6 are shown respectively.

[0146] like Figure 16A and Figure 16B As shown, the optical camera lens assembly, from the object side to the image side, includes, in sequence: a first lens E1, an aperture stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an imaging plane S15. The first lens E1 and the second lens E2 constitute the first lens group, and the third to sixth lenses E3 constitute the second lens group. Exemplarily, the first lens E1 and the second lens E2 within the first lens group may have a fixed interval in the optical axis direction, and any two adjacent lenses among the third to sixth lenses E6 within the second lens group may have a fixed interval in the optical axis direction. The interval in the optical axis direction between the second lens group and the first lens group is adjustable to adjust the total effective focal length of the optical camera lens assembly. That is, the optical axis spacing T23 between the second lens E2 and the third lens E3 is variable, and the optical axis spacing T between the sixth lens E6 and the filter E6 varies with the optical axis spacing T23 between the second lens E2 and the third lens E3. With the first and second lens groups configured as described above, the optical camera lens group can achieve good imaging quality in both long-distance mode (e.g., at infinity) and short-distance mode (e.g., at 100 mm).

[0147] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has negative optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0148] Table 16 shows some basic parameters of the optical camera lens assembly of Example 6. The units for radius of curvature, thickness / distance, and focal length are millimeters (mm). Table 17 shows the overall parameters and some other basic parameters of the optical camera lens assembly of Example 6 at an infinity object distance and at an object distance of 100mm. The units for the total effective focal length f of the optical camera lens assembly, the distance T23 between the second lens E2 and the third lens E3 on the optical axis, and the distance T between the sixth lens E6 and the filter E6 on the optical axis are millimeters (mm). The unit for half of the maximum field of view (Semi-FOV) of the optical camera lens assembly is degrees (°). Tables 18-1 and 18-2 show the higher-order coefficients applicable to each aspherical mirror in Example 6, wherein each aspherical surface shape can be defined by formula (1) given in Example 1 above.

[0149]

[0150] Table 16

[0151]

[0152] Table 17

[0153]

[0154] Table 18-1

[0155]

[0156] Table 18-2

[0157] Figure 17A and Figure 18A The on-axis chromatic aberration curves of the optical camera lens assembly of Embodiment 6 in both long-range and short-range modes are shown, indicating the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 17B and Figure 18B The astigmatism curves of the optical camera lens assembly of Embodiment 6 in long-range mode and short-range mode are shown respectively, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 17C and Figure 18C The distortion curves of the optical camera lens group of Embodiment 6 in long-distance mode and short-distance mode are shown respectively, which represent the distortion magnitude values ​​corresponding to different image heights. Figure 17D and Figure 18D The magnification chromatic aberration curves of the optical camera lens assembly of Embodiment 6 in both long-range and short-range modes are shown, representing the deviation of light at different image heights on the imaging plane after passing through the optical camera lens assembly. According to... Figures 17A to 18D It can be seen that the optical camera lens assembly given in Example 6 can achieve good imaging quality.

[0158] In summary, Examples 1 to 6 satisfy the relationships shown in Table 19.

[0159]

[0160] Table 19

[0161] This application also provides an imaging device, whose electronic photosensitive element can be a photocoupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device can be a stand-alone imaging device such as a digital camera, or an imaging module integrated into a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical camera lens group described above.

[0162] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An optical camera lens, characterized in that, In order from the object side to the image side along the optical axis, the optical lens assembly comprises: a first lens with positive refractive power, an object side surface of which is convex; a second lens with negative refractive power, an object side surface of which is concave and an image side surface of which is convex; a third lens with negative refractive power, an image side surface of which is concave; a fourth lens with refractive power, an object side surface of which is convex and an image side surface of which is concave; a fifth lens with negative refractive power, an object side surface of which is concave and an image side surface of which is convex; a sixth lens with refractive power, an object side surface of which is convex; wherein the first lens and the second lens constitute a first lens group, the third lens to the sixth lens constitute a second lens group, and a spacing distance of the second lens group relative to the first lens group in the direction of the optical axis is adjustable so that the optical lens assembly is switched between a close-up mode and a far mode; the number of lenses with refractive power in the optical lens assembly is six; the first lens group has positive refractive power and the second lens group has negative refractive power; and an effective focal length f5 of the fifth lens, a curvature radius R9 of the object side surface of the fifth lens, and a central thickness CT5 of the fifth lens on the optical axis satisfy: 1.98≤f5 / (R9+CT5)≤3.

19.

2. The optical camera lens according to claim 1, characterized in that, an effective focal length f2 of the second lens, a half of a maximum field angle of the optical camera lens in the tele mode Semi-FOV IN and an effective focal length f1 of the first lens satisfy: -10.60 IN f2 / (tan(Semi-FOV) x f1) < -6.

5.

3. The optical camera lens according to claim 2, characterized in that, Semi-FOV is half of the maximum field of view angle of the optical camera lens group in the close distance mode w satisfies: -11.05 ≤ f2 / (Tan(Semi-FOV W ) x f1) < -6.

8.

4. The optical camera lens according to claim 1, characterized in that, The total effective focal length f of the optical camera lens group in the tele mode IN satisfies: -4.2 < f5 / f IN ≤ -2.

40.

5. The optical camera lens according to claim 4, characterized in that, The total effective focal length f of the optical camera lens group in the close distance mode W satisfies: -4.60≤f5 / f W ≤-2.

65. 6.The optical camera lens according to claim 1, characterized in that, a separation distance T23 on the optical axis of the second lens and the third lens in the tele mode IN a separation distance T34 on the optical axis of the third lens and the fourth lens and a center thickness CT3 of the third lens on the optical axis satisfy: 2.08 ≤ (T23 IN + T34) / CT3 ≤ 3.

66.

7. The optical camera lens according to claim 6, characterized in that, a separation distance T23 of the second lens and the third lens on the optical axis in the close distance mode W satisfies: 3.34 ≤ (T23 W + T34) / CT3 ≤ 5.

24. 8.The optical camera lens according to claim 1, wherein a curvature radius R7 of an object side surface of the fourth lens, an effective focal length f3 of the third lens, a curvature radius R6 of an image side surface of the third lens, and an aperture value FNO of the optical camera lens group in the tele mode IN satisfies: 2.0 < (R7-f3) / (R6xFNO IN ) ≤ 4.

61.

9. The optical camera lens according to claim 7, characterized in that, The aperture value FNO of the optical camera lens group in the close distance mode w satisfies: 2.00 ≤ (R7-f3) / (R6xFNO W ) ≤ 4.

54.

10. The optical camera lens according to claim 1, characterized in that, The curvature radius R8 of the image side surface of the fourth lens, the curvature radius R11 of the object side surface of the sixth lens, and the total effective focal length f of the optical camera lens group in the tele mode IN satisfies: 1.85 ≤ (R8 + R11) / f IN ≤ 7.

72.

11. The optical camera lens according to claim 10, characterized in that, The total effective focal length f of the optical camera lens group in the close distance mode W satisfies: 2.0 < (R8+R11) / f W ≤8.

40.

12. The optical camera lens according to claim 1, characterized in that, a sum ∑AT of interval distances on the optical axis between any two adjacent lenses among the first lens to the sixth lens in the telephoto mode IN , an interval distance T45 on the optical axis between the fourth lens and the fifth lens, and an interval distance T56 on the optical axis between the fifth lens and the sixth lens satisfy: 1.89 ≤ ∑AT IN / (T45+T56) ≤ 2.

19.

13. The optical camera lens according to claim 12, characterized in that, a sum ∑AT of interval distances on the optical axis between any two adjacent lenses among the first to sixth lenses in the close-up mode w satisfies: 2.20 ≤ ∑AT W / (T45+T56) ≤ 2.

58. 14.The optical camera lens assembly according to any of claims 1 to 13, wherein, a curvature radius R3 of the object side surface of the second lens, a curvature radius R4 of the image side surface of the second lens, and a central thickness CT2 of the second lens on the optical axis satisfy: -28.36≤(R3+R4) / CT2≤-23.

44.

15. The optical camera lens according to any one of claims 1 to 13, characterized in that, a curvature radius R6 of the image side surface of the third lens and a curvature radius R1 of the object side surface of the first lens satisfy: 1.2<R6 / R1<1.9.

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