Camera system assembly

Abstract

A camera system assembly comprises a lens barrel, a lens group and at least one spacer element, the lens group and the spacer element are accommodated in the lens barrel, the lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in order from an object side to an image side along an optical axis, the at least one spacer element comprises a fourth spacer element located between the fourth lens and the fifth lens and a fifth spacer element located between the fifth lens and the sixth lens, wherein a combined focal length f56 of the fifth lens and the sixth lens, an air separation T45 of the fourth lens and the fifth lens on the optical axis, an air separation T56 of the fifth lens and the sixth lens on the optical axis, a maximum thickness CP4 of the fourth spacer element and a maximum thickness CP5 of the fifth spacer element satisfy: -50.0 < f56*(T56 / CP5) / (CP4+T45) < -35.0.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical elements, in particular to a camera system assembly comprising multiple lenses. BACKGROUND

[0002] Nowadays, high-definition imaging lenses play an increasingly important role in portable electronic products such as smart phones. With the development of the times, people have gone beyond the stage of "taking a picture" and have put forward higher and higher requirements for imaging quality.

[0003] In actual use scenarios, the ambient light is mostly natural light, and there are many scenes with insufficient light, which requires the light intake of the lens to be able to adapt to multiple scenes. On the one hand, consumers have put forward higher requirements for the high imaging quality of imaging lenses, such as the desire to simultaneously meet the shooting requirements of two different focal lengths for close-range and long-range objects. On the other hand, as portable electronic products tend to be miniaturized, the total length of the lens is limited, thereby increasing the design difficulty of the lens.

[0004] The last two lenses in an optical lens often need to correct field curvature and aberration, and they usually adopt a design with a large surface shape curvature. When assembled, the last two lenses are more sensitive due to the large change in their shape curvature. In addition, the last two lenses have a large diameter, which is prone to form a large step structure, and the last two lenses are also close to each other, which can cause interference and affect the imaging quality. SUMMARY

[0005] The present application provides a camera system assembly, which comprises a lens barrel, a lens group and at least one spacer element, the lens group and the spacer element are both accommodated in the lens barrel, wherein the lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in order from the object side to the image side along the optical axis; the at least one spacer element comprises a fourth spacer element located between the fourth lens and the fifth lens and a fifth spacer element located between the fifth lens and the sixth lens, wherein the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens and the effective focal length f of the camera system assembly satisfy: -6.0 < f5 / f < -3.0, -1.5 < f4 / f < -0.5, and the combined focal length f56 of the fifth lens and the sixth lens, the air separation T45 of the fourth lens and the fifth lens on the optical axis, the air separation T56 of the fifth lens and the sixth lens on the optical axis, the maximum thickness CP4 of the fourth spacer element and the maximum thickness CP5 of the fifth spacer element satisfy: -50.0 < f56 (T56 / CP5) / (CP4+T45) < -35.0.

[0006] In one or more embodiments, the radius of curvature R8 of the image side surface of the fourth lens, the radius of curvature R9 of the object side surface of the fifth lens, the maximum thickness CP4 of the fourth spacer element, and the interval EP45 between the fourth spacer element and the fifth spacer element satisfy: 1.0 < |R8 + R9| / (EP45 + CP4) < 8.0.

[0007] In one or more embodiments, the effective focal length f6 of the sixth lens, the central thickness CT6 of the sixth lens on the optical axis, the radius of curvature R12 of the image side surface of the sixth lens, the inner diameter d5s of the object side surface of the fifth spacer element, and the inner diameter d5m of the image side surface of the fifth spacer element satisfy: -1.0 < R12 (d5m - d5s) / (f6 CT6) < 0.0. The radius of curvature R10 of the image side surface of the fifth lens, the central thickness CT5 of the fifth lens on the optical axis, the outer diameter D5s of the object side surface of the fifth spacer element, the outer diameter D5m of the image side surface of the fifth spacer element, and the maximum thickness CP5 of the fifth spacer element satisfy: 9.0 ≤ R10 (D5m - D5s) / (CP5 CT5) < 23.0.

[0008] In one or more embodiments, the effective focal length f5 of the fifth lens, the air interval T56 of the fifth lens and the sixth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the interval EP45 between the fourth spacer element and the fifth spacer element satisfy: -165.0 < f5 / EP45 + T56 / CT5 < -70.0.

[0009] In one or more embodiments, the radius of curvature R6 of the image side surface of the third lens, the radius of curvature R7 of the object side surface of the fourth lens, and the inner diameter d4s of the object side surface of the fourth spacer element satisfy: -4.0 < (R6 + R7) / d4s < -2.5.

[0010] In one or more embodiments, the at least one spacer element further includes a second spacer element located between the second lens and the third lens, the effective focal length f2 of the second lens, the outer diameter D2s of the object side surface of the second spacer element, the inner diameter d2s of the object side surface of the second spacer element, and the radius of curvature R4 of the image side surface of the second lens satisfy: -2.0 < f2 (D2s / d2s) / R4 < -0.5.

[0011] In one or more embodiments, the at least one spacer element further includes a second spacer element located between the second lens and the third lens, the outer diameter D2m of the image side surface of the second spacer element, the inner diameter d2m of the image side surface of the second spacer element, the effective focal length f3 of the third lens, and the radius of curvature R6 of the image side surface of the third lens satisfy: -2.5 < f3 (D2m / d2m) / R6<-1.5.

[0012] In one or more embodiments, at least one spacer element further includes a first spacer element located between the first lens and the second lens, and a second spacer element located between the second lens and the third lens. The effective focal length f1 of the first lens and the effective focal length f2 of the second lens are the effective focal lengths of the second lens. The maximum thickness CP1 of the first spacer element, the maximum thickness CP2 of the second spacer element, and the center thickness CT2 of the second lens on the optical axis satisfy: -8.0 < (f1 + f2) / (CP1 + CT2 + CP2) < -3.0.

[0013] In one or more embodiments, at least one spacer element further includes a first spacer element located between the first lens and the second lens and a second spacer element located between the second lens and the third lens, wherein the center thickness CT1 of the first lens on the optical axis, the spacer EP01 between the front end face of the lens barrel and the first spacer element, and the spacer EP12 between the first spacer element and the second spacer element satisfy: 1.0 < (CT1 + EP12) / EP01 < 2.0.

[0014] In one or more embodiments, half of the maximum field of view (Semi-FOV) of the camera system components, the outer diameter D0s of the front face of the lens barrel closest to the object side, and the center thickness CT1 of the first lens on the optical axis satisfy: 1.0 < TAN(Semi-FOV). D0s / CT1 < 2.0.

[0015] In one or more embodiments, the lens barrel is a split-type lens barrel, and the lens group is divided into a first lens group and a second lens group. The second lens group can move relative to the first lens group along the optical axis. The effective focal length f3 of the third lens, the outer diameter D2m of the image-side surface of the second spacer element, the inner diameter d2m of the image-side surface of the second spacer element, the radius of curvature R7 of the object-side surface of the fourth lens, and the air gap T34 between the third and fourth lenses on the optical axis satisfy: 3.5 < f3 (D2m-d2m) / |R7 T34|<14.0.

[0016] The camera system assembly provided by the embodiment of the present application comprises a lens set and at least one spacer element, the lens set can comprise six lenses with optical power, and a lens barrel for accommodating the lens set and the spacer element. The at least one spacer element can at least comprise a fourth spacer element between the fourth lens and the fifth lens, and a fifth spacer element between the fifth lens and the sixth lens. By constraining the ratio of the fifth lens and the effective focal length of the entire camera system assembly, and the ratio of the fourth lens and the effective focal length of the entire camera system assembly within an effective range, the light deflection at the fourth lens can be reduced, and the combination can effectively reduce the distortion and aberration caused by the system and reduce the stray light risk of the system; and by reasonably controlling the maximum thickness of the fourth spacer element and the fifth spacer element, and at the same time cooperating with the assembly step difference of the air gap between the fourth lens and the fifth lens, and the fifth lens and the sixth lens, the assembly stability is more excellent, which can ensure that the light is more ideally coupled into the fourth lens and uniformly incident to the first surface of the sixth lens by the fifth lens, prevent the stray light risk caused by the steep rise of light, and improve the imaging quality of the camera system assembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings:

[0018] Figure 1 A structural schematic diagram of a camera system assembly according to an embodiment of the present application is shown;

[0019] FIG. 2 shows a schematic diagram of eliminating stray light of a camera system assembly according to an embodiment of the present application;

[0020] Figure 3A And Figure 3B A structural schematic diagram of a camera system assembly according to Embodiment 1 of the present application is shown;

[0021] Figures 4A to 4D An on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the camera system assembly according to Embodiment 1 of the present application are respectively shown;

[0022] Figure 5A And Figure 5B A structural schematic diagram of a camera system assembly according to Embodiment 2 of the present application is shown;

[0023] Figures 6A to 6D An on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the camera system assembly according to Embodiment 2 of the present application are respectively shown;

[0024] Figure 7A And Figure 7B A structural schematic diagram of a camera system assembly according to Embodiment 3 of the present application is shown;

[0025] Figures 8A to 8D axial chromatic aberration curves, a distortion curve, and a magnification chromatic aberration curve of the camera system assembly according to Embodiment 3 of the present application are shown, respectively;

[0026] Figure 9A and Figure 9B a structural schematic diagram of a camera system assembly according to Embodiment 4 of the present application is shown;

[0027] Figures 10A to 10D axial chromatic aberration curves, a distortion curve, and a magnification chromatic aberration curve of the camera system assembly according to Embodiment 4 of the present application are shown, respectively;

[0028] Figure 11A and Figure 11B a structural schematic diagram of a camera system assembly according to Embodiment 5 of the present application is shown; and

[0029] Figures 12A to 12D axial chromatic aberration curves, a distortion curve, and a magnification chromatic aberration curve of the camera system assembly according to Embodiment 5 of the present application are shown, respectively. DETAILED DESCRIPTION

[0030] For a better understanding of the present application, various aspects of the present application will be described in greater detail below with reference to the accompanying drawings. It is to be understood that the detailed description is merely descriptive of exemplary embodiments of the present application and is not intended, in any way, to limit the scope of the present application. Throughout the specification, like reference numerals refer to like elements. The expression “and / or” includes any and all combinations of one or more of the associated listed items.

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

[0032] In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of explanation. Specifically, the shape of the spherical surface or the aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The drawings are merely examples and are not drawn to scale.

[0033] In the present disclosure, the paraxial region refers to a region near the optical axis. If a lens surface is convex and the position of the convex surface is not specified, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the position of the concave surface is not specified, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side surface of the lens, and the surface of each lens closest to the image plane is referred to as the image side surface of the lens.

[0034] It should also be understood that the words "comprise", "comprising", "include", "including", and / or "contain", when used in this specification, specify the presence of stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or groups thereof. In addition, when describing the embodiments of the present application, the word "may" means "one or more embodiments of the present application". Furthermore, the word "exemplary" is intended to mean "an example or illustration".

[0035] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that the terms should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The following embodiments only express several embodiments of the present application, which are described in detail and specifically, but should not be understood as limitations to the scope of the patent of the present application. It should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. For example, the lens group (i.e. the first lens to the sixth lens), the barrel structure and the spacer element in each embodiment of the present application can be combined arbitrarily, and are not limited to the combination of the lens group, the barrel structure, the spacer element, etc. in the embodiment.

[0037] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. Among them, Figure 1 The structural arrangement of a camera system assembly according to the present application and the schematic diagram of some parameters are shown. Those skilled in the art should understand that some parameters commonly used in the art, such as the center thickness CT1 of the first lens on the optical axis, are not shown in the Figure 1 drawings, Figure 1The illustration only shows partial parameters of the lens barrel and spacer elements of one camera system component of this application to facilitate a better understanding of the invention. Figure 1 As shown, L represents the maximum height of the lens barrel along the optical axis; EP01 represents the distance between the front end face of the lens barrel near the object side and the object side face of the first spacer element along the optical axis; EP45 represents the distance between the image side face of the fourth spacer element and the object side face of the fifth spacer element along the optical axis; CP4 represents the maximum thickness of the fourth spacer element along the optical axis; CP5 represents the maximum thickness of the fifth spacer element along the optical axis; D0s represents the outer diameter of the front end face of the lens barrel closest to the object side; d0s represents the inner diameter of the front end face of the lens barrel closest to the object side; D1s represents the outer diameter of the object side face of the first spacer element; d1s represents the inner diameter of the object side face of the first spacer element; D1m represents the outer diameter of the image side face of the first spacer element; d1m represents the inner diameter of the image side face of the first spacer element; d2s represents the inner diameter of the object side face of the second spacer element; d2m represents the inner diameter of the image side face of the second spacer element, and so on.

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

[0039] refer to Figure 1 The first aspect of this application provides an imaging system assembly that may include a lens barrel, a lens group, and at least one spacer element, wherein the lens group and one or more spacer elements are all housed within the lens barrel. The lens group may include six lenses of optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially along the optical path. These six lenses are arranged sequentially from the object side to the image side along the optical axis. Any two adjacent lenses from the first to the sixth lens may have a spacer distance between them.

[0040] In an example embodiment, the spacer elements can include a fourth spacer element located between the fourth lens and the fifth lens and directly contacting the image side surface of the fourth lens, and a fifth spacer element located between the fifth lens and the sixth lens and directly contacting the image side surface of the fifth lens, wherein the effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, and the effective focal length f of the entire image system assembly satisfy -6.0 < f5 / f < -3.0 and -1.5 < f4 / f < -0.5. By constraining the ratio of the effective focal length of the fifth lens to the effective focal length of the entire image system assembly and the ratio of the effective focal length of the fourth lens to the effective focal length of the entire image system assembly within an effective range, the light deflection of the fourth lens can be reduced, which can effectively reduce the distortion and aberration caused by the system and reduce the stray light risk of the system. The combined focal length f56 of the fifth lens and the sixth lens, the air gap T45 of the fourth lens and the fifth lens on the optical axis, the air gap T56 of the fifth lens and the sixth lens on the optical axis, the maximum thickness CP4 of the fourth spacer element, and the maximum thickness CP5 of the fifth spacer element satisfy -50.0 < f56 (T56 / CP5) / (CP4+T45) < -35.0. By controlling the condition, the light can be coupled into the fourth lens more ideally and uniformly shot into the first surface of the sixth lens by the fifth lens, the large step difference between the fifth lens and the sixth lens caused by the steep rise of the light can be prevented, the stray light risk caused by the steep rise of the light can be reduced, and the imaging quality of the image system assembly can be improved.

[0041] In other example embodiments, the spacer elements can further include at least one of a first spacer element located between the first lens and the second lens and directly contacting the image side surface of the first lens, and a second spacer element located between the second lens and the third lens and directly contacting the image side surface of the second lens. Reasonable use of the spacer elements can effectively avoid the stray light risk, reduce the interference to the image quality, and further improve the imaging quality of the image system assembly.

[0042] In an example embodiment, the curvature radius R8 of the image side surface of the fourth lens, the curvature radius R9 of the object side surface of the fifth lens, the maximum thickness CP4 of the fourth spacer element, and the interval EP45 between the fourth spacer element and the fifth spacer element satisfy 1.0 < |R8+R9| / (EP45+CP4) < 8.0. By controlling the curvature of the fourth and fifth lenses, and controlling the thickness of the fourth spacer element, the interval between the fourth spacer element and the fifth spacer element, and the like to satisfy a certain relationship, the bending degree of the fourth lens can be effectively reduced, the forming risk and appearance risk of the fourth lens can be reduced, the fourth lens can still maintain good performance under high temperature and high humidity and thermal shock conditions, and the stability of the entire lens can be greatly improved.

[0043] In the example embodiment, the effective focal length f6 of the sixth lens, the central thickness CT6 of the sixth lens on the optical axis, the radius of curvature R12 of the image side of the sixth lens, the inner diameter d5s of the object side of the fifth spacer element, and the inner diameter d5m of the image side of the fifth spacer element can satisfy: -1.0 < R12 (d5m-d5s) / (f6 CT6) < 0.0. By satisfying this condition, the radius of curvature of the image side of the sixth lens and the effective focal length are reasonably controlled, so that the imaging quality is not lost while ensuring a relatively ideal image size; the inner diameter of the fifth spacer element between the fifth lens and the sixth lens is reasonably controlled, so that the light passing through the fifth lens is uniformly incident into the image plane, preventing the fifth lens and the sixth lens from having a large assembly step difference caused by the steep rise of light, reducing the risk of stray light caused by the steep rise of light, and improving the imaging quality of the system.

[0044] In the example embodiment, the radius of curvature R10 of the image side of the fifth lens, the central thickness CT5 of the fifth lens on the optical axis, the outer diameter D5s of the object side of the fifth spacer element, the outer diameter D5m of the image side of the fifth spacer element, and the maximum thickness CP5 of the fifth spacer element can satisfy: 9.0 < R10 (D5m-D5s) / (CP5 CT5) < 23.0. By satisfying this condition, the radius of curvature value of the image side of the fifth lens can be effectively constrained, and a good ratio range is defined in balancing the thickness of the fifth spacer element and the central thickness of the fifth lens on the optical axis and the outer diameter of the fifth spacer element. By limiting this ratio range, the field angle of light can be controlled to achieve better imaging results.

[0045] In the example embodiment, the effective focal length f5 of the fifth lens, the air gap T56 of the fifth lens and the sixth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, and the interval EP45 between the fourth spacer element and the fifth spacer element can satisfy: -165.0 < f5 / EP45+T56 / CT5 < -70.0. By satisfying this condition, the angle between the light passing through the fifth lens and the optical axis can be reduced, so that the light is more convergent, the relative luminance is improved, and the ghost light generated by the edge light leakage of the fourth lens is reduced by using a reasonable interval between the fourth spacer element and the fifth spacer element. At the same time, reasonably setting the central thickness of the fifth lens helps to improve the smoothness of the lens surface, reduce the interference influence of the assembly bearing surface, improve the bearing density of the lens, and thus improve the stability.

[0046] In an exemplary embodiment, the radius of curvature R6 of the image-side surface of the third lens, the radius of curvature R7 of the object-side surface of the fourth lens, and the inner diameter d4s of the object-side surface of the fourth spacer element can satisfy: -4.0 < (R6 + R7) / d4s < -2.5. By controlling the curvature of the object-side and image-side surfaces of the third and fourth lenses, and simultaneously controlling the size of the inner diameter d4s of the fourth spacer element, a certain proportional relationship can be achieved between the two. This effectively reduces the divergence of light emitted from the third lens, lowers the risk of stray light at the third lens, and by controlling the radius of curvature on both sides of the third and fourth lenses to satisfy the above relationship, stray light can be effectively contained, significantly improving the overall stability of the lens.

[0047] In an exemplary embodiment, the effective focal length f2 of the second lens, the outer diameter D2s of the object-side surface of the second spacer element, the inner diameter d2s of the object-side surface of the second spacer element, and the radius of curvature R4 of the image-side surface of the second lens can satisfy: -2.0 < f2 (D2s / d2s) / R4 < -0.5. By controlling the effective focal length of the second lens, it can be ensured that the incident light rays pass smoothly into the surface of the third lens after passing through the second lens. The third lens has a relatively large edge thickness. By reasonably setting the inner and outer diameters of the side of the second spacer element, stray light from black objects can be effectively avoided, excess light entering the rear lens can be reduced, lens sensitivity can be decreased, and image quality can be improved.

[0048] In an exemplary embodiment, the outer diameter D2m of the image-side surface of the second spacer element, the inner diameter d2m of the image-side surface of the second spacer element, the effective focal length f3 of the third lens, and the radius of curvature R6 of the image-side surface of the third lens can satisfy: -2.5 < f3 (D2m / d2m) / R6 < -1.5. By controlling the effective focal length of the third lens, it can be ensured that the incident light rays pass smoothly into the fourth lens surface after passing through the third lens. By reasonably setting the inner and outer diameters of the second spacer element on the image plane side, stray light from black objects can be effectively avoided, excess light entering the rear lenses can be reduced, lens sensitivity can be decreased, and image quality can be improved.

[0049] In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens are the effective focal lengths of the second lens. The maximum thickness CP1 of the first spacer element, the maximum thickness CP2 of the second spacer element, and the center thickness CT2 of the second lens on the optical axis can satisfy: -8.0 < (f1 + f2) / (CP1 + CT2 + CP2) < -3.0. By constraining the ratio of the effective focal lengths of the first and second lenses to the spacing between the first, second, and third lenses on the optical axis within an effective range, the forming strength of the second lens can be effectively guaranteed. By reasonably setting the values ​​of f1 and f2 and the center thickness of the second lens on the optical axis, the light refraction of the first lens can be reduced. The combination of these two factors can effectively reduce the distortion and aberrations caused by the imaging system and reduce the risk of stray light in the imaging system.

[0050] In the example embodiment, the central thickness CT1 of the first lens on the optical axis, the interval EP01 between the front end surface of the lens barrel and the first spacer element, and the interval EP12 between the first spacer element and the second spacer element can satisfy: 1.0 < (CT1 + EP12) / EP01 < 2.0. By satisfying this condition, a good ratio range is determined in balancing the central thickness of the first lens and the interval between the first spacer element and the second spacer element, and by limiting this ratio range, the sensitivity of the first lens can be reduced, and better imaging results can be achieved.

[0051] In the example embodiment, the half Semi-FOV of the maximum field of view angle of the camera system assembly, the outer diameter D0s of the front end surface of the lens barrel closest to the object side, and the central thickness CT1 of the first lens on the optical axis can satisfy: 1.0 < TAN (Semi-FOV) D0s / CT1 < 2.0. By satisfying this condition, the useless light generated by the poor second face edge quality of the first lens and the internal reflection of the first lens can be effectively reduced, and the uniformity of the light distribution in each direction on the image plane can be increased. At the same time, the setting of the outer diameter of the front end surface of the lens barrel close to the object side can effectively reduce the risk of stray light generated by the emission of edge light on the lens surface.

[0052] In the example embodiment, the camera system assembly adopts a double-group internal focusing lens, the lens barrel is a split lens barrel, the lens group is divided into a first lens group and a second lens group, and the second lens group can move relative to the first lens group along the optical axis. The effective focal length f3 of the third lens, the outer diameter D2m of the image side surface of the second spacer element, the inner diameter d2m of the image side surface of the second spacer element, the curvature radius R7 of the object side surface of the fourth lens, and the air interval T34 of the third lens and the fourth lens on the optical axis can satisfy: 3.5 < f3 (D2m-d2m) / |R7 T34 | < 14.0. By setting the inner and outer diameters of the image side surface of the second spacer element, the angle between the light passing through the third lens and the optical axis can be reduced, the light can be more concentrated, and the relative illumination can be improved. At the same time, by using a reasonable relationship between the air interval parameters of the third and fourth lenses on the optical axis and the curvature radius of the object side surface of the fourth lens, the influence of assembly bearing surface interference can be reduced, the lens bearing tightness can be improved, and the stability can be improved.

[0053] It should be understood that the present application does not specifically limit the number of spacer elements, and any number of spacer elements can be included between any two lenses, and any number of spacer elements can be included in the entire camera system assembly. The spacer elements help the camera system assembly to intercept excess catadioptric light paths, reduce stray light and ghosting. The auxiliary bearing between the spacer element and the lens barrel helps to improve the poor assembly stability and low performance yield caused by large step difference between lenses.

[0054] In some embodiments, the camera system component according to this application may further include a filter and / or protective glass disposed between the sixth lens and the imaging surface, for filtering light of different wavelengths, correcting color deviations, and protecting the photosensitive element located on the imaging surface.

[0055] In some embodiments, the imaging system component according to this application may further include an aperture stop disposed between the object side and the first lens. The placement of the aperture stop facilitates the effective focusing of light entering the optical lens and helps to reduce the lens aperture.

[0056] According to the above-described embodiments of the camera system assembly of this application, its lens group can employ multiple lenses, such as the six lenses described above. By rationally allocating the focal length, surface shape, center thickness of each lens, and on-axis spacing between each lens, incident light can be effectively converged, the overall optical length reduced, and manufacturability improved, making the camera system assembly more conducive to manufacturing and processing.

[0057] In embodiments of this application, at least one of the mirror surfaces of the first to sixth lenses is an aspherical mirror surface. An aspherical lens is characterized by a continuously changing curvature from its center to its periphery. Unlike a spherical lens, which has a constant curvature from its center to its periphery, an aspherical lens has superior curvature radius characteristics, offering advantages in improving distortion and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, both the object-side and image-side surfaces of each of the first to sixth lenses are aspherical mirror surfaces.

[0058] However, those skilled in the art will understand that the number of lenses constituting the camera system assembly can be varied to obtain the various results and advantages described herein without departing from the technical solutions claimed in this application. For example, although six lenses have been described as an example in the embodiments, the camera system assembly is not limited to including six lenses. If desired, the camera system assembly may also include other numbers of lenses.

[0059] refer to Figure 1 A second aspect of this application provides an imaging system assembly that may include a lens barrel, a lens group, and at least one spacer element, wherein the lens group and one or more spacer elements are all housed within the lens barrel. The lens group may include six lenses of optical power, namely a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially along the optical path. These six lenses are arranged sequentially from the object side to the image side along the optical axis. Any two adjacent lenses from the first to the sixth lens may have a spacer distance between them.

[0060] In an example embodiment, the spacer elements can include a fifth spacer element located between the fifth lens and the sixth lens and can be in direct contact with the image side surface of the fifth lens, wherein the effective focal length f6 of the sixth lens, the central thickness CT6 of the sixth lens on the optical axis, the radius of curvature R12 of the image side surface of the sixth lens, the inner diameter d5s of the object side surface of the fifth spacer element, and the inner diameter d5m of the image side surface of the fifth spacer element satisfy: -1.0 < R12 (d5m-d5s) / (f6 CT6) < 0.0. By satisfying the condition, the radius of curvature of the image side surface of the sixth lens and the effective focal length are reasonably controlled, so that the imaging quality is not lost while ensuring a relatively ideal image size; by reasonably controlling the inner diameter of the fifth spacer element between the fifth lens and the sixth lens, the light passing through the fifth lens can be uniformly incident on the image plane, preventing a large assembly step difference between the fifth lens and the sixth lens caused by light steep rising, and reducing the risk of stray light caused by light steep rising, thereby improving the imaging quality of the system.

[0061] Reference Figure 1 In a third aspect, the present application provides a camera system assembly, which can include a lens barrel, a lens group, and at least one spacer element, the lens group and the one or more spacer elements being accommodated in the lens barrel. The lens group can include six lenses with optical power, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in order along an optical path. The six lenses are arranged in order from an object side to an image side along an optical axis. Any two adjacent lenses among the first lens to the sixth lens can have a spacer distance therebetween.

[0062] In an example embodiment, the spacer elements can include a second spacer element located between the second lens and the third lens and can be in direct contact with the image side surface of the second lens.

[0063] In an example embodiment, the lens barrel is a split lens barrel, the lens group can be divided into a first lens group and a second lens group, and the second lens group can be moved relative to the first lens group along the optical axis, wherein the effective focal length f3 of the third lens, the outer diameter D2m of the image side surface of the second spacer element, the inner diameter d2m of the image side surface of the second spacer element, the radius of curvature R7 of the object side surface of the fourth lens, and the air gap T34 of the third lens and the fourth lens on the optical axis satisfy: 3.5 < f3 (D2m-d2m) / |R7 T34| < 14.0. By setting the inner and outer diameters of the image side surface of the second spacer element, the angle between the light passing through the third lens and the optical axis can be reduced, so that the light is more convergent, the relative illumination is improved, and by reasonably controlling the relationship between the air gap parameter of the third and fourth lenses on the optical axis and the radius of curvature of the object side surface of the fourth lens, the influence of assembly bearing surface interference can be reduced, the bearing tightness of the lenses is improved, and the stability is improved.

[0064] Embodiments 1 to 5 of the camera system assembly applicable to the above exemplary embodiments are further described below with reference to the accompanying drawings. Figure 2A and Figure 2B The effect diagram of eliminating stray light of the camera system assembly according to embodiments 1 to 5 of the present application is shown. As shown in Figure 2B The effect diagram of eliminating stray light of the camera system assembly according to embodiments 1 to 5 of the present application is shown. As shown in Figure 2A The effect diagram of eliminating stray light of the camera system assembly according to embodiments 1 to 5 of the present application is shown. As shown in

[0065] Example 1

[0066] Embodiments 1 to 5 of the camera system assembly applicable to the above exemplary embodiments are further described below with reference to the accompanying drawings. Figures 3A to 4D The camera system assembly according to embodiment 1 of the present application is described below with reference to the accompanying drawings. Figure 3A The structure diagram of the camera system assembly according to embodiment 1 of the present application in the far distance shooting mode is shown, Figure 3B The structure diagram of the camera system assembly according to embodiment 1 of the present application in the close distance shooting mode is shown.

[0067] As shown in Figure 3A and Figure 3B The camera system assembly includes a lens barrel P0 and a lens group and at least one spacer element contained in the lens barrel P0. The lens group includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The spacer element includes: a first spacer element P1, a second spacer element P2, a fourth spacer element P4, and a fifth spacer element P5. The spacer element can block stray light in the imaging process from entering the next lens, while making the lens and the lens barrel P0 better abutment, enhancing the structural stability of the camera system assembly.

[0068] The first lens E1 has positive refractive power, the object side surface S1 is convex, and the image side surface S2 is convex. The second lens E2 has negative refractive power, the object side surface S3 is concave, and the image side surface S4 is concave. The third lens E3 has positive refractive power, the object side surface S5 is convex, and the image side surface S6 is convex. The fourth lens E4 has negative refractive power, the object side surface S7 is concave, and the image side surface S8 is convex. The fifth lens E5 has negative refractive power, the object side surface S9 is convex, and the image side surface S10 is concave. The sixth lens E6 has negative refractive power, the object side surface S11 is convex, and the image side surface S12 is concave. The camera system assembly further includes a filter E7 disposed between the sixth lens E6 and the imaging surface S15. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0069] Table 1 shows a basic parameter table of the camera system components of Example 1, wherein the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0070]

[0071] Table 1

[0072] In Example 1, the object side and the image side of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface type of each aspherical lens is The aspherical surface can be defined using, but not limited to, the following aspherical surface formula:

[0073] (1)

[0074] wherein, is the sag of the aspherical surface at a position with a height of h from the vertex of the aspherical surface along the optical axis; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1 above); k is the conic coefficient; Ai is the correction coefficient of the aspherical surface of the i -th order. The higher order coefficients of each aspherical mirror S1-S8 that can be used in Example 1 are given in Table 2-1 and Table 2-2 below. A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 , A 20 , A 22 , A 24 , A 26 , A 28 and A 30 。

[0075]

[0076] Table 2-1

[0077]

[0078] Table 2-2

[0079] The following Table 3 shows the parameter setting table of the camera system assembly according to the example of embodiment 1 in the first state and the second state respectively. 1-1 and 1-2 in the table represent the first state and the second state of embodiment 1 respectively. Among them, the first state is suitable for the long-distance shooting mode, and the second state is suitable for the close-up shooting mode. In this example, in the first state, when the object distance is infinity, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 of the camera system assembly is 0.4022 mm; in the second state, when the object distance is 100 mm, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 is 0.8172 mm.

[0080]

[0081] Table 3

[0082] Figure 4A The on-axis chromatic aberration curve of the camera system assembly of embodiment 1 is shown, which represents the deviation of light rays of different wavelengths after passing through the lens. Figure 4B The astigmatism curve of the camera system assembly of embodiment 1 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 4C The distortion curve of the camera system assembly of embodiment 1 is shown, which represents the distortion size value corresponding to different image heights. Figure 4D The rate of change of the camera system assembly of embodiment 1 is shown, which represents the deviation of light rays on the imaging surface after passing through the lens. According to the Figures 4A to 4D It can be seen that the camera system assembly given by embodiment 1 can achieve good imaging quality.

[0083] Example 2

[0084] The following refers to Figures 5A to 6D The camera system assembly according to embodiment 2 of the present application is described. Figure 5A and Figure 5B The structural schematic diagrams of the camera system assembly according to embodiment 2 of the present application in the first state and the second state are shown respectively

[0085] As Figure 5A and Figure 5BAs shown, the camera system assembly includes a lens barrel P0, and a lens group and at least one spacer element housed in the lens barrel P0. The lens group includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The spacer elements include a first spacer element P1, a second spacer element P2, a fourth spacer element P4, and a fifth spacer element P5. The spacer elements can block stray light in the imaging process from entering the next lens, while allowing the lens to better abut the lens barrel P0, enhancing the structural stability of the camera system assembly.

[0086] The first lens E1 has positive refractive power, with a convex object side surface S1 and a convex image side surface S2. The second lens E2 has negative refractive power, with a concave object side surface S3 and a concave image side surface S4. The third lens E3 has positive refractive power, with a convex object side surface S5 and a convex image side surface S6. The fourth lens E4 has negative refractive power, with a concave object side surface S7 and a convex image side surface S8. The fifth lens E5 has negative refractive power, with a convex object side surface S9 and a concave image side surface S10. The sixth lens E6 has negative refractive power, with a concave object side surface S11 and a concave image side surface S12. The camera system assembly further includes a filter E7 disposed between the sixth lens E6 and an imaging surface S15. The filter E7 has an object side surface S13 and an image side surface S14. Light from an object passes through each of the surfaces S1-S14 in order and is ultimately imaged on the imaging surface S15.

[0087] Table 4 shows a basic parameter table for the camera system assembly of Example 2, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0088]

[0089] Table 4

[0090] In Example 2, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface type of each aspherical lens is which can be defined using the formula (1) given above in Example 1. Tables 5-1 and 5-2 below give the high-order term coefficients that can be used for each aspherical surface S1-S8 in Example 2. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0091]

[0092] Table 5-1

[0093]

[0094] Table 5-2

[0095] The following Table 6 shows the parameter setting table of the camera system assembly in the first state and the second state respectively according to an example of embodiment 2 of the present application. 2-1 and 2-2 in the table represent the first state and the second state of embodiment 2 respectively. The first state is suitable for the telephoto mode, and the second state is suitable for the close-up mode. In the example, when the object distance is infinity, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 is 0.4030 mm, and when the object distance is 100 mm, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 is 0.8180 mm.

[0096]

[0097] Table 6

[0098] Figure 6A The on-axis chromatic aberration curve of the camera system assembly of embodiment 2 is shown, which represents the deviation of light rays of different wavelengths from the converging focus point after passing through the lens. Figure 6B The astigmatism curve of the camera system assembly of embodiment 22 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 6C The distortion curve of the camera system assembly of embodiment 2 is shown, which represents the distortion size values corresponding to different image heights. Figure 6D The lateral chromatic aberration curve of the camera system assembly of embodiment 2 is shown, which represents the deviation of light rays on the imaging surface at different image heights after passing through the lens. According to the formula: Figures 6A to 6D It can be seen that the camera system assembly given in embodiment 2 can achieve good imaging quality.

[0099] Example 3

[0100] The following description is made with reference to Figures 7A to 8D A camera system assembly according to Embodiment 3 of the present application is described. Figure 7A A structural schematic diagram of the camera system assembly according to Embodiment 3 of the present application in a far distance shooting mode is shown, Figure 7B A structural schematic diagram of the camera system assembly according to Embodiment 3 of the present application in a close distance shooting mode is shown.

[0101] As shown in Figure 7A and Figure 7B The camera system assembly includes a lens barrel P0 and a lens group and at least one spacer element accommodated in the lens barrel P0. The lens group includes, in order from the object side to the image side, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The spacer elements include a first spacer element P1, a second spacer element P2, a fourth spacer element P4, and a fifth spacer element P5. The spacer elements can block stray light in the imaging process from entering the next lens, while making the lens and the lens barrel P0 better abut, enhancing the structural stability of the camera system assembly.

[0102] The first lens E1 has positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a convex surface. The second lens E2 has negative refractive power, the object side surface S3 is a concave surface, and the image side surface S4 is a concave surface. The third lens E3 has positive refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has negative refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has negative refractive power, the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has negative refractive power, the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface. The camera system assembly further includes a filter E7 disposed between the sixth lens E6 and an imaging surface S15. The filter E7 has an object side surface S13 and an image side surface S14. Light from an object passes through each surface S1 to S14 in order and is finally imaged on the imaging surface S15.

[0103] Table 7 shows a basic parameter table of the camera system assembly of Embodiment 3, wherein the units of the curvature radius, the thickness / distance, and the focal length are millimeters (mm).

[0104]

[0105] Table 7

[0106] In Embodiment 3, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface type of each aspherical surface is which can be defined by the formula (1) given in Embodiment 1 above. The following Table 8-1 and Table 8-2 give the high-order term coefficients of each aspherical surface S1-S8 that can be used in Embodiment 3. A4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0107]

[0108] Table 8-1

[0109]

[0110] Table 8-2

[0111] The following Table 9 shows the parameter setting table of the camera system assembly in the first state and the second state, respectively, according to the example of embodiment 3. 3-1 and 3-2 in the table represent the first state and the second state of embodiment 3, respectively. The first state is suitable for the telephoto mode, and the second state is suitable for the close-up mode. In the example, when the object distance is infinity, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 of the camera system assembly is 0.4030 mm, and when the object distance is 100 mm, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 is 0.8080 mm.

[0112]

[0113] Table 9

[0114] Figure 8A The on-axis chromatic aberration curve of the camera system assembly of embodiment 3 is shown, which indicates the deviation of the converging focus points of light rays of different wavelengths after passing through the lens. Figure 8B The astigmatism curve of the camera system assembly of embodiment 3 is shown, which indicates the meridional image surface curvature and the sagittal image surface curvature. Figure 8CThe distortion curve of the camera system assembly of embodiment 3 is shown, which represents the distortion size values corresponding to different image heights. Figure 8D The magnification chromatic aberration curve of the camera system assembly of embodiment 3 is shown, which represents the deviation of light rays on the imaging surface at different image heights via the lens. According to the formula Figures 8A to 8D It can be seen that the camera system assembly given in embodiment 3 can achieve good imaging quality.

[0115] Example 4

[0116] The following refers to Figures 9A to 10D The camera system assembly according to embodiment 4 of the present application is described. Figure 9A The structural schematic diagram of the camera system assembly according to embodiment 4 of the present application in the far distance shooting mode is shown, Figure 9B The structural schematic diagram of the camera system assembly according to embodiment 4 of the present application in the close distance shooting mode is shown.

[0117] As shown in Figure 9A and Figure 9B The camera system assembly includes a lens barrel P0 and a lens group and at least one spacer element accommodated in the lens barrel P0. The lens group includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The spacer element includes: a first spacer element P1, a second spacer element P2, a fourth spacer element P4, and a fifth spacer element P5. The spacer element can block stray light in the imaging process from entering the next lens, while making the lens and the lens barrel P0 better abut, enhancing the structural stability of the camera system assembly.

[0118] The first lens E1 has positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a convex surface. The second lens E2 has negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has negative refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has negative refractive power, the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has negative refractive power, the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface. The camera system assembly further includes a filter E7 disposed between the sixth lens E6 and the imaging surface S15. The filter E7 has an object side surface S13 and an image side surface S14. Light from the object sequentially passes through each surface S1 to S14 and is finally imaged on the imaging surface S15.

[0119] Table 10 shows the basic parameter table of the camera system assembly of embodiment 4, wherein the units of the curvature radius, the thickness / distance, and the focal length are millimeters (mm).

[0120]

[0121] Table 10

[0122] In Embodiment 4, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface shape of each aspherical surface is defined by the following formula (1). The formula (1) is given in Embodiment 1 above. Tables 11-1 and 11-2 below give the high-order term coefficients that can be used for each aspherical surface S1 to S8 in Embodiment 4. A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0123]

[0124] Table 11-1

[0125]

[0126] Table 11-2

[0127] Table 12 below shows the parameter setting table of the imaging system components in the first state and the second state, respectively, according to one example of Embodiment 4 of the present application. 4-1 and 4-2 in the table represent the first state and the second state of Embodiment 4, respectively. The first state is suitable for a telephoto shooting mode, and the second state is suitable for a close-up shooting mode. In this example, when the object distance is infinity, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 of the imaging system components is 0.4040 mm, and when the object distance is 100 mm, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 is 0.8190 mm.

[0128]

[0129] Table 12

[0130] Figure 10A The on-axis chromatic aberration curve of the camera system assembly of embodiment 4 is shown, which represents the deviation of light rays of different wavelengths via the converging focus point after the lens. Figure 10B The astigmatism curve of the camera system assembly of embodiment 4 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 10C The distortion curve of the camera system assembly of embodiment 4 is shown, which represents the distortion size values corresponding to different image heights. Figure 10D The magnification chromatic aberration curve of the camera system assembly of embodiment 4 is shown, which represents the deviation of light rays via the lens on the imaging surface at different image heights. According to Figures 10A to 10D It can be seen that the camera system assembly given by embodiment 4 can achieve good imaging quality.

[0131] Example 5

[0132] The following refers to Figures 11A to 12D A camera system assembly according to embodiment 5 of the present application is described. Figure 11A A structural schematic diagram of the camera system assembly according to embodiment 5 of the present application in a far distance shooting mode is shown, Figure 11B A structural schematic diagram of the camera system assembly according to embodiment 5 of the present application in a close distance shooting mode is shown.

[0133] As shown in Figure 11A and Figure 11B The camera system assembly includes a lens barrel P0 and a lens group and at least one spacer element accommodated in the lens barrel P0. The lens group includes, in order from the object side to the image side: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, and a sixth lens E6. The spacer element includes: a first spacer element P1, a second spacer element P2, a fourth spacer element P4, and a fifth spacer element P5. The spacer element can block stray light in the imaging process from entering the next lens, while making the lens better abut against the lens barrel P0, enhancing the structural stability of the camera system assembly.

[0134] The first lens E1 has positive refractive power, with a convex object side surface S1 and a concave image side surface S2. The second lens E2 has negative refractive power, with a concave object side surface S3 and a concave image side surface S4. The third lens E3 has positive refractive power, with a convex object side surface S5 and a convex image side surface S6. The fourth lens E4 has negative refractive power, with a concave object side surface S7 and a convex image side surface S8. The fifth lens E5 has negative refractive power, with a convex object side surface S9 and a concave image side surface S10. The sixth lens E6 has negative refractive power, with a convex object side surface S11 and a concave image side surface S12. The camera system assembly further includes a filter E7 disposed between the sixth lens E6 and an imaging surface S15. The filter E7 has an object side surface S13 and an image side surface S14. Light from an object passes through the surfaces S1-S14 in sequence and is ultimately imaged on the imaging surface S15.

[0135] Table 13 shows a table of basic parameters of the camera system assembly of Example 5, where the units of the radius of curvature, thickness / distance, and focal length are all millimeters (mm).

[0136]

[0137] Table 13

[0138] In Example 5, the object side surface and the image side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface type of each aspherical lens is which can be defined using the formula (1) given in Example 1 above. The following Tables 14-1 and 14-2 give the high order term coefficients of the aspherical surfaces S1-S8 that can be used in Example 5 A 4 、 A 6 、 A 8 、 A 10 、 A 12 、 A 14 、 A 16 、 A 18 、 A 20 、 A 22 、 A 24 、 A 26 、 A 28 and A 30 。

[0139]

[0140] Table 14-1

[0141]

[0142] Table 14-2

[0143] The following Table 15 shows the parameter setting table of the imaging system assembly in the first state and the second state respectively according to one example of embodiment 5. 5-1 and 5-2 in the table respectively represent the first state and the second state of embodiment 5. Among them, the first state is suitable for the telephoto shooting mode, and the second state is suitable for the close-up shooting mode. In this example, when the object distance is infinity, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 of the imaging system assembly is 0.4034 mm, and when the object distance is 100 mm, the air interval T34 on the optical axis between the image side surface S6 of the third lens E3 and the object side surface S7 of the fourth lens E4 of the imaging system assembly is 0.8184 mm.

[0144]

[0145] Table 15

[0146] Figure 12A The on-axis chromatic aberration curve of the imaging system assembly of embodiment 5 is shown, which represents the deviation of light rays of different wavelengths from the converging focus point after passing through the lens. Figure 12B The astigmatism curve of the imaging system assembly of embodiment 5 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 12C The distortion curve of the imaging system assembly of embodiment 5 is shown, which represents the distortion size value corresponding to different image heights. Figure 12D The magnification chromatic aberration curve of the imaging system assembly of embodiment 5 is shown, which represents the deviation of light rays on the imaging surface at different image heights after passing through the lens. According to the formula: Figures 12A to 12D It can be seen that the imaging system assembly given by embodiment 5 can achieve good imaging quality.

[0147] The following Table 16 shows the focal length values of the lenses of the imaging system assemblies of embodiments 1 to 5, and the Semi-FOV value parameters of half of the maximum field of view. Among them, the unit of the focal length value is millimeter (mm).

[0148]

[0149] Table 16

[0150] According to some embodiments of the present application, the camera system assembly adopts a dual-group focus lens, the lens barrel P0 is a split lens barrel, the lens group is divided into a first lens group and a second lens group, for example, the first lens group includes a first lens E1, a second lens E2 and a third lens E3, and the second lens group includes a fourth lens E4, a fifth lens E5 and a sixth lens E6. The second lens group can move relative to the first lens group along the optical axis.

[0151] Table 17 below shows some basic parameters of the lens barrels and spacer elements of the camera system assemblies of Embodiments 1-5, such as d2s, d2m, D2s, D2m, D4s, d4s, d5s, d5m, D5s, D5m, CP1, CP2, CP4, CP5, EP01, EP12, EP45, D0s, etc. The camera system assemblies of the respective embodiments differ in the structural dimensions of the included lens barrels and spacer elements. The basic parameters listed in Table 17 are measured according to the labeling method shown in Table 17, and the units of the basic parameters listed in Table 17 are all millimeters (mm). Figure 1

[0152]

[0153] Table 17

[0154] In summary, in Embodiments 1-5, the camera system assemblies in the first state and the second state respectively satisfy the conditions in Table 18 below. For example, 1-1 and 1-2 represent the conditions that the camera system assembly according to Embodiment 1 satisfies in the first state and the second state, respectively.

[0155]

[0156] Table 18

[0157] The above description is merely preferred embodiments of the present application and a principle of applied technologies. It should be understood by those skilled in the art that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the technical features described above, and should also cover other technical solutions formed by any combinations of the technical features described above or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above-described features and the technical features disclosed in the present application (but not limited to) having similar functions.​

Claims

1. A camera system assembly, characterized by The camera system assembly comprises a lens barrel, a lens group and at least one spacer element, the lens group and the spacer element are contained in the lens barrel, wherein, The lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in order from an object side to an image side along an optical axis; The at least one spacer element comprises a fourth spacer element located between the fourth lens and the fifth lens and a fifth spacer element located between the fifth lens and the sixth lens, The number of lenses with optical power in the camera system assembly is six; The first lens has positive optical power, and the object side surface of the first lens is convex; The second lens has negative optical power, and the image side surface of the second lens is concave; The third lens has positive optical power, and the image side surface of the third lens is convex; The fourth lens has negative optical power, and the object side surface of the fourth lens is concave and the image side surface of the fourth lens is convex; The fifth lens has negative optical power, and the object side surface of the fifth lens is convex and the image side surface of the fifth lens is concave; The sixth lens has negative optical power, and the image side surface of the sixth lens is concave; The effective focal length f4 of the fourth lens, the effective focal length f5 of the fifth lens, and the effective focal length f of the camera system assembly satisfy: -5.73≤f5 / f≤-3.20, -1.05≤f4 / f≤-0.93; and the combined focal length f56 of the fifth and sixth lenses, the air separation T45 of the fourth and fifth lenses on the optical axis, the air separation T56 of the fifth and sixth lenses on the optical axis, the maximum thickness CP4 of the fourth spacer element, and the maximum thickness CP5 of the fifth spacer element satisfy: -49.73≤f56 (T56 / CP5) / (CP4+T45)≤-37.40; The radius of curvature R8 of the image side surface of the fourth lens, the radius of curvature R9 of the object side surface of the fifth lens, the maximum thickness CP4 of the fourth spacer element and the interval EP45 between the fourth spacer element and the fifth spacer element satisfy: 1.31≤|R8+R9| / (EP45+CP4)≤7.

76.

2. The camera system assembly of claim 1, wherein, An effective focal length f6 of the sixth lens, a central thickness CT6 of the sixth lens on the optical axis, a curvature radius R12 of an image side surface of the sixth lens, an inner diameter d5s of an object side surface of the fifth spacer element, and an inner diameter d5m of an image side surface of the fifth spacer element satisfy: -0.87 ≤ R12 (d5m - d5s) / (f6 CT6) ≤ -0.

47.

3. The camera system assembly of claim 1, wherein, The curvature radius R10 of the image side surface of the fifth lens, the central thickness CT5 of the fifth lens on the optical axis, the outer diameter D5s of the object side surface of the fifth spacer element, the outer diameter D5m of the image side surface of the fifth spacer element, and the maximum thickness CP5 of the fifth spacer element satisfy: 9.94 ≤ R10 (D5m - D5s) / (CP5 CT5) ≤ 22.

59.

4. The camera system assembly of claim 1, wherein, The effective focal length f5 of the fifth lens, the air interval T56 of the fifth lens and the sixth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis and the interval EP45 between the fourth spacer element and the fifth spacer element satisfy: -160.35≤f5 / EP45+T56 / CT5≤-76.

46.

5. The camera system assembly of claim 1, wherein, The radius of curvature R6 of the image side surface of the third lens, the radius of curvature R7 of the object side surface of the fourth lens and the inner diameter d4s of the object side surface of the fourth spacer element satisfy: -3.59≤(R6+R7) / d4s≤-2.

90.

6. The camera system assembly of claim 1, wherein, The at least one spacer element further includes a second spacer element between the second lens and the third lens, an effective focal length f2 of the second lens, an outer diameter D2s of an object side surface of the second spacer element, an inner diameter d2s of the object side surface of the second spacer element, and a radius of curvature R4 of an image side surface of the second lens satisfy: -2.0 < f2 (D2s / d2s) / R4 < -0.

93.

7. The camera system assembly of claim 1, wherein, The at least one spacer element further includes a second spacer element between the second lens and the third lens, an outer diameter D2m of an image side surface of the second spacer element, an inner diameter d2m of the image side surface of the second spacer element, an effective focal length f3 of the third lens, and a radius of curvature R6 of the image side surface of the third lens satisfy: -2.23 < f3 (D2m / d2m) / R6 < -1.

67.

8. The camera system assembly of claim 1, wherein, The at least one spacer element further comprises a first spacer element located between the first lens and the second lens and a second spacer element located between the second lens and the third lens, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, the maximum thickness CP1 of the first spacer element, the maximum thickness CP2 of the second spacer element and the central thickness CT2 of the second lens on the optical axis satisfy: -7.81≤(f1+f2) / (CP1+CT2+CP2)≤-3.

34.

9. The camera system assembly of any of claims 1-5, wherein, The at least one spacer element further comprises a first spacer element located between the first lens and the second lens and a second spacer element located between the second lens and the third lens, the central thickness CT1 of the first lens on the optical axis, the interval EP01 between the front end surface of the lens barrel and the first spacer element and the interval EP12 between the first spacer element and the second spacer element satisfy: 1.36≤(CT1+EP12) / EP01≤1.

67.

10. The camera system assembly of any one of claims 1-8, wherein, A half of a maximum field angle of view Semi-FOV of the camera system assembly, an outer diameter D0s of a front end surface of the lens barrel closest to an object side, and a center thickness CT1 of the first lens on the optical axis satisfy: 1.28 ≤ TAN(Semi-FOV) D0s / CT1 ≤ 1.

42.

11. The camera system assembly of any one of claims 1-5, wherein, The lens barrel is a split lens barrel, the lens group is divided into a first lens group and a second lens group, and the second lens group is movable relative to the first lens group along the optical axis; The at least one spacer element further includes a second spacer element between the second lens and the third lens, an effective focal length f3 of the third lens, an outer diameter D2m of an image side surface of the second spacer element, an inner diameter d2m of the image side surface of the second spacer element, a radius of curvature R7 of a lens side surface of the fourth lens, and an air separation T34 of the third lens and the fourth lens on the optical axis satisfy: 3.63 ≤ f3 (D2m - d2m) / |R7| T34 | < 14.0.

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