Optical lens and electronic device

Abstract

The application discloses an optical lens and an electronic device. The optical lens comprises a lens barrel, a lens group comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, and a plurality of spacers comprising a first spacer arranged between the first lens and the second lens and a sixth spacer arranged on an image side of the sixth lens. The maximum height L of the lens barrel along the optical axis direction is less than 5 mm. The effective focal length f1 of the first lens, the central thickness CT6 of the sixth lens on the optical axis, the image side inner diameter d1m of the first spacer, the maximum thickness CP1 of the first spacer and the image side outer diameter D6m of the sixth spacer satisfy the following condition: 23<(D6m+d1m+f1) / (CP1+CT6)<33. The application can ensure small size and high imaging quality under the premise of ensuring unchanged imaging specifications.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical elements, and particularly relates to an optical lens and an electronic device. BACKGROUND

[0002] With the continuous development of optical lens technology, the application of optical lenses is more and more widespread. For example, optical lenses play an irreplaceable role in many fields such as smart phones, security monitoring, automotive assisted driving, intelligent detection, and virtual reality.

[0003] Taking the field of smart phones as an example, as users have higher and higher requirements for the appearance and shooting functions of the phones, in order to improve the quality and competitiveness of their own products, phone manufacturers increase the number of optical lenses of the phones and also continuously increase the number of lenses in a single optical lens. For example, some phones in the related art include at least one front optical lens and at least two rear optical lenses, each optical lens generally includes a lens barrel and a plurality of lenses arranged in sequence along the axial direction of the lens barrel. During assembly, each lens is sequentially assembled into the lens barrel and is connected with the lens barrel in interference fit. Two adjacent lenses with a large difference in diameter are transitioned through a spacer ring with a certain thickness, and the spacer ring is supported between the two lenses through two parallel end faces. Although the increase in the number of optical lenses and lenses improves the user experience, the increase in the number of lenses makes it difficult to control the uniformity of the step difference of the lenses located at the front and rear of the lens barrel, the tolerance sensitivity is high, and the aberration of the entire optical system is difficult to balance, thereby affecting the imaging quality. Meanwhile, the increase in the number of optical lenses also leads to a continuous decrease in the space ratio of a single optical lens.

[0004] Therefore, under the premise of ensuring the imaging specification, there is an urgent need for an optical lens that takes into account miniaturization and high imaging quality.

[0005] CONTENT

[0006] Embodiments of the present application provide an optical lens that takes into account miniaturization and high imaging quality and an electronic device.

[0007] According to an embodiment of the present application, the second lens has negative refractive power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the fourth lens has negative refractive power, and the image side surface of the fourth lens is a concave surface.

[0008] According to an embodiment of the present application, the second lens has negative refractive power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the fourth lens has negative refractive power, and the image side surface of the fourth lens is a concave surface.

[0009] According to an embodiment of the present application, the sixth lens has negative refractive power, and the object side surface and the image side surface of the sixth lens are both concave surfaces.

[0010] According to an embodiment of the present application, at least three spacers are arranged between the first lens and the fourth lens, and at least three spacers are arranged between the third lens and the sixth lens; wherein the spacers are arranged between the second lens and the third lens, between the third lens and the fourth lens, between the fourth lens and the fifth lens, and / or between the fifth lens and the sixth lens.

[0011] According to an embodiment of the present application, the spacers between the second lens and the third lens are second spacers, and the spacers between the fifth lens and the sixth lens are fifth spacers; wherein the outer diameter D0m of the end surface of the lens barrel towards the image side, the central thickness CT1 of the first lens on the optical axis, the effective focal length f2 of the second lens, the effective focal length f6 of the sixth lens, the distance EP12 between the image side surface of the first spacer and the object side surface of the second spacer on the optical axis, and the maximum thickness CP5 of the fifth spacer satisfy the following condition:

[0012] 21<(f2*f6*CT1) / (D0m*EP12*CP5)<47.

[0013] According to an embodiment of the present application, the spacer among the plurality of spacers between the second lens and the third lens is a second spacer, and the spacer among the plurality of spacers between the fifth lens and the sixth lens is a fifth spacer; wherein the radius of curvature R1 of the object side surface of the first lens, the radius of curvature R2 of the image side surface of the first lens, the central thickness CT2 of the second lens on the optical axis, the maximum thickness CP2 of the second spacer, the inner diameter d2s of the object side surface of the second spacer, and the inner diameter d5s of the object side surface of the fifth spacer satisfy the following condition: 14<(d5s / CP2) / (R2 / R1+d2s / CT2)<24.

[0014] According to an embodiment of the present application, the spacer among the plurality of spacers between the fifth lens and the sixth lens is a fifth spacer; wherein the air separation T23 of the second lens and the third lens on the optical axis, the effective focal length f5 of the fifth lens, the radius of curvature R9 of the object side surface of the fifth lens, the inner diameter d1s of the object side surface of the first spacer, the outer diameter D1s of the object side surface of the first spacer, and the inner diameter d5m of the image side surface of the fifth spacer satisfy the following condition: 10<(f5*d1s+D1s*R9) / (d5m*T23)<20.

[0015] According to an embodiment of the present application, the spacer among the plurality of spacers between the second lens and the third lens is a second spacer, and the spacer among the plurality of spacers between the third lens and the fourth lens is a third spacer; wherein the inner diameter d0m of the end surface of the lens barrel towards the image side, the air separation T12 of the first lens and the second lens on the optical axis, the air separation T34 of the third lens and the fourth lens on the optical axis, the outer diameter D1m of the image side surface of the first spacer, and the distance EP23 of the image side surface of the second spacer and the object side surface of the third spacer on the optical axis satisfy the following condition:

[0016] 20<(D1m+d0m) / (T12+T34+EP23)<30.

[0017] According to an embodiment of the present application, the spacer among the plurality of spacers between the third lens and the fourth lens is a third spacer, and the spacer between the fourth lens and the fifth lens is a fourth spacer; wherein the radius of curvature R3 of the object side surface of the second lens, the radius of curvature R4 of the image side surface of the second lens, the inner diameter d3s of the object side surface of the third spacer, and the outer diameter D4s of the object side surface of the fourth spacer satisfy the following condition: 4 < (R3*R4) / (d3s*D4s) < 9.

[0018] According to an embodiment of the present application, the spacer among the plurality of spacers between the third lens and the fourth lens is a third spacer, and the spacer between the fifth lens and the sixth lens is a fifth spacer; wherein the radius of curvature R11 of the object side surface of the sixth lens, the radius of curvature R12 of the image side surface of the sixth lens, the air separation T56 of the fifth lens and the sixth lens on the optical axis, the inner diameter d3m of the image side surface of the third spacer, and the outer diameter D5s of the object side surface of the fifth spacer satisfy the following condition:

[0019] 0 < T56*(R12-R11) / (d3m*D5s) < 5.

[0020] According to an embodiment of the present application, the spacer among the plurality of spacers between the second lens and the third lens is a second spacer, the spacer between the third lens and the fourth lens is a third spacer, the spacer between the fourth lens and the fifth lens is a fourth spacer, and the spacer between the fifth lens and the sixth lens is a fifth spacer; wherein the effective focal length of the fourth lens is f4, the radius of curvature of the image side surface of the fourth lens is R8, the inner diameter d2m of the image side surface of the second spacer, the distance EP34 of the image side surface of the third spacer and the object side surface of the fourth spacer on the optical axis, the inner diameter d4m of the image side surface of the fourth spacer, and the outer diameter D5m of the image side surface of the fifth spacer satisfy the following condition: 26 < (D5m / EP34-f4 / R8) / (d2m / d4m) < 52.

[0021] According to an embodiment of the present application, the spacer among the plurality of spacers between the second lens and the third lens is a second spacer, and the spacer between the fourth lens and the fifth lens is a fourth spacer; wherein a central thickness CT5 of the fifth lens on the optical axis, an air interval T56 of the fifth lens and the sixth lens on the optical axis, an outer diameter D2s of an object side surface of the second spacer, an inner diameter d4s of an object side surface of the fourth spacer, a maximum thickness CP4 of the fourth spacer, and an inner diameter d6s of an object side surface of the sixth spacer satisfy the following condition: 4 < (D2s*d4s*CT5) / (d6s*CP4*T56) < 54.

[0022] According to an embodiment of the present application, the spacer among the plurality of spacers between the second lens and the third lens is a second spacer; wherein a total effective focal length f of the optical lens, an outer diameter D0s of an end surface of the lens barrel towards the object side, a central thickness CT3 of the third lens on the optical axis, an outer diameter D2m of an image side surface of the second spacer, an inner diameter d6m of an image side surface of the sixth spacer, and an outer diameter D6s of an object side surface of the sixth spacer satisfy the following condition: 52 < (d6m*D6s+D2m*f) / (CT3*D0s) < 72.

[0023] According to the electronic device of the second aspect embodiment of the present application, the imaging element is used to convert the optical image formed by the optical lens into an electrical signal.

[0024] The optical lens and the electronic device provided by the embodiments of the present application can improve the compactness of the lens barrel and the lens group by reasonably optimizing the maximum height of the lens barrel, and realize the miniaturization of the whole optical lens. At the same time, by arranging multiple spacers in the lens barrel, the embodiments of the present application can not only better control the light rays shuttling between the lenses by using the spacers, improve the overall stray light and ghost of the optical system, and effectively improve the imaging quality of the optical lens, but also can limit the interval between the spacers located in the front part of the lens barrel, that is, near the object plane, and the thickness of the spacer located in the rear part of the lens barrel, that is, near the imaging plane, by using the parameter relationship between the first spacer, the sixth spacer and the first lens and the sixth lens, thereby better controlling the step uniformity of the lenses located in the front part and the rear part of the lens barrel, avoiding uneven thickness of the lens barrel, and improving the assembly stability. At the same time, the effective focal length of the first lens can also be used to adjust the deflection angle of the edge field of view of the first lens, effectively reducing the sensitivity of the optical system. In addition, by reasonably distributing the optical power of the first lens, the optical power of the second lens, the optical power of the fourth lens, the optical power of the fifth lens and the optical power of the sixth lens, the light rays can be gently converged or diverged, thereby effectively balancing the aberration of the optical system and further reducing the tolerance sensitivity. In addition, by setting at least four image side surfaces of the first lens to the sixth lens as concave surfaces, the refraction angle of the light rays in each lens can be effectively controlled, and good processing characteristics of the optical system can be realized.

[0025] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0026] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings. The drawings are provided for the purpose of better understanding the present application and do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 is a structural schematic diagram of an optical lens according to the present application;

[0028] Figure 2 is a structural schematic diagram of an optical lens according to Embodiment 1-1 of the present application;

[0029] Figure 3 is a structural schematic diagram of an optical lens according to Embodiment 1-2 of the present application;

[0030] Figure 4 is a structural schematic diagram of an optical lens according to Embodiment 1-3 of the present application;

[0031] Figures 5 to 7 On-axis chromatic aberration curves, astigmatism curves and distortion curves of the optical lens of Embodiment 1-1, Embodiment 1-2 or Embodiment 1-3 are shown respectively;

[0032] Figure 8 is a structural schematic diagram of an optical lens according to Embodiment 2-1 of the present application;

[0033] Figure 9 is a structural schematic diagram of an optical lens according to Embodiment 2-2 of the present application;

[0034] Figure 10 is a structural schematic diagram of an optical lens according to Embodiment 2-3 of the present application;

[0035] Figures 11 to 13 On-axis chromatic aberration curves, astigmatism curves and distortion curves of the optical lens of Embodiment 2-1, Embodiment 2-2 or Embodiment 2-3 are shown respectively;

[0036] Figure 14 is a structural schematic diagram of an optical lens according to Embodiment 3-1 of the present application;

[0037] Figure 15 is a structural schematic diagram of an optical lens according to Embodiment 3-2 of the present application;

[0038] Figure 16 is a structural schematic diagram of an optical lens according to Embodiment 3-3 of the present application;

[0039] Figures 17 to 19 On-axis chromatic aberration curves, astigmatism curves and distortion curves of the optical lens of Embodiment 3-1, Embodiment 3-2 or Embodiment 3-3 are shown respectively.

[0040] Reference signs:

[0041] E1, first lens; E2, second lens; E3, third lens; E4, fourth lens;

[0042] E5, fifth lens; E6, sixth lens;

[0043] P1, first spacer; P2, second spacer; P3, third spacer;

[0044] P4, fourth spacer; P5, fifth spacer; P6, sixth spacer. DETAILED DESCRIPTION

[0045] In the description of the embodiments of the present application, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0046] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0047] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0048] The exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to help understanding, and should be considered only as exemplary. Therefore, those skilled in the art should realize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Also, for the sake of clarity and conciseness, the description below omits the description of well-known functions and structures.

[0049] 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 present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0050] In conjunction with Figures 1 to 19As shown, the embodiment of the present application provides an optical lens, which comprises a lens barrel, a lens set and a plurality of spacers arranged in the lens barrel; wherein the lens set comprises 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 arranged in sequence from an object side to an image side along an optical axis; the plurality of spacers comprises a first spacer P1 arranged between the first lens E1 and the second lens E2 and a sixth spacer P6 arranged on the image side of the sixth lens E6, that is, the image side of the sixth lens E6 is provided with the sixth spacer P6, and the edge of the image side of the sixth lens E6 is in contact with the object side of the sixth spacer P6; wherein one of the first lens E1 and the second lens E2 has a positive focal power, and the other has a negative focal power; at least two of the fourth lens E4, the fifth lens E5 and the sixth lens E6 have a negative focal power; the image side of at least four of the first lens E1 to the sixth lens E6 is concave; the maximum height L of the lens barrel along the optical axis direction is less than 5mm; the effective focal length f1 of the first lens E1, the central thickness CT6 of the sixth lens E6 on the optical axis, the inner diameter d1m of the image side of the first spacer P1, the maximum thickness CP1 of the first spacer P1 and the outer diameter D6m of the image side of the sixth spacer P6 satisfy the following conditions: 23<(D6m+d1m+f1) / (CP1+CT6)<33.

[0051] The embodiments of the present application can improve the compactness of the lens barrel and the lens group by reasonably optimizing the maximum height L of the lens barrel, and realize the miniaturization of the entire optical lens. At the same time, by arranging multiple spacers in the lens barrel, the spacers can not only better control the light rays shuttling between the lenses, i.e., the first lens E1 to the sixth lens E6, improve the stray light and ghost of the optical system, i.e., the lens group as a whole, and effectively improve the imaging quality of the optical lens, but also can limit the spacing between the spacers located at the front part of the lens barrel, i.e., near the object plane, and the thickness of the spacers located at the rear part of the lens barrel, i.e., near the imaging plane, by using the parameter relationship between the first spacer P1, the sixth spacer P6, and the first lens E1 and the sixth lens E6, thereby better controlling the step uniformity of the lenses located at the front and rear parts of the lens barrel, avoiding uneven thickness of the lens barrel, and improving the assembly stability. At the same time, the deflection angle of the edge field of view at the first lens E1 can be adjusted by using the effective focal length of the first lens E1, effectively reducing the sensitivity of the optical system. In addition, by reasonably distributing the optical power of the first lens E1, the optical power of the second lens E2, and the optical power of the fourth lens E4, the optical power of the fifth lens E5, and the optical power of the sixth lens E6, the light rays can be gently converged or diverged, thereby effectively balancing the aberration of the optical system and further reducing the tolerance sensitivity. In addition, by setting at least four of the first lens E1 to the sixth lens E6 to be concave on the image side, the refraction angle of the light rays at each lens can be effectively controlled, and good processing characteristics of the optical system can be achieved.

[0052] It should be noted that those skilled in the art should understand that the number of lenses in the lens group is not limited to six, and other lenses can be added based on the actual situation without deviating from the technical solutions claimed by the present application, that is, the number of lenses in the lens group is not limited to six, and those skilled in the art can add other lenses based on the actual situation.

[0053] In some embodiments, the second lens E2 has a negative optical power, the object side of the second lens E2 is convex, the image side of the second lens E2 is concave, the fourth lens E4 has a negative optical power, and the image side of the fourth lens E4 is concave. The advantages of such arrangement are that the negative optical power of the second lens E2 and the concave image side of the second lens E2 can promote light divergence and increase the image surface of the entire optical system, and the use of the second lens E2 and the fourth lens E4 with the above-mentioned optical power and surface type can balance the aberration of the optical system, reduce the sensitivity of the tolerance, and maintain the miniaturization of the optical system.

[0054] In some embodiments, the sixth lens E6 has a negative refractive power, and both the object side surface and the image side surface of the sixth lens E6 are concave. By reasonably configuring the refractive power and surface type of the sixth lens E6, the embodiments of the present application can not only limit the spherical aberration contribution of the sixth lens E6 within a reasonable range, but also improve the stray light and ghosting, thereby obtaining good imaging quality in the on-axis field of view.

[0055] In some embodiments, at least three spacers are arranged between the first lens E1 and the fourth lens E4, and at least three spacers are arranged between the third lens E3 and the sixth lens E6. For example, spacers are arranged between the second lens E2 and the third lens E3, between the third lens E3 and the fourth lens E4, between the fourth lens E4 and the fifth lens E5, and between the fifth lens E5 and the sixth lens E6. The spacer between the second lens E2 and the third lens E3 is the second spacer P2, the spacer between the third lens E3 and the fourth lens E4 is the third spacer P3, the spacer between the fourth lens E4 and the fifth lens E5 is the fourth spacer P4, and the spacer between the fifth lens E5 and the sixth lens E6 is the fifth spacer P5.

[0056] In some embodiments, spacers are arranged between the second lens E2 and the third lens E3 and between the fifth lens E5 and the sixth lens E6. The spacer between the second lens E2 and the third lens E3 is the second spacer P2, and the spacer between the fifth lens E5 and the sixth lens E6 is the fifth spacer P5. Further, the end face outer diameter D0m of the lens barrel toward the image side, the central thickness CT1 of the first lens E1 on the optical axis, the effective focal length f2 of the second lens E2, the effective focal length f6 of the sixth lens E6, the distance EP12 on the optical axis between the image side surface of the first spacer P1 and the object side surface of the second spacer P2, and the maximum thickness CP5 of the fifth spacer P5 satisfy the following condition: 21 < (f2*f6*CT1) / (D0m*EP12*CP5) < 47. By setting the second spacer P2 and the fifth spacer P5 and using the above condition, the embodiments of the present application can effectively control the axial dimensions of the first lens E1, the second lens E2, the fifth lens E5, and the sixth lens E6, so as to not only make the structure of the lens group more compact, but also realize the reasonable cooperation between the end face of the lens barrel toward the image side, i.e., the rear end face, and the lens group, thereby avoiding large misalignment of the assembly bearing surface, and further helping to improve the assembly stability of the entire lens group.

[0057] In some embodiments, a spacer is arranged between the second lens E2 and the third lens E3 and between the fifth lens E5 and the sixth lens E6; the spacer arranged between the second lens E2 and the third lens E3 is a second spacer P2, and the spacer arranged between the fifth lens E5 and the sixth lens E6 is a fifth spacer P5. Further, the radius of curvature R1 of the object side surface of the first lens E1, the radius of curvature R2 of the image side surface of the first lens E1, the central thickness CT2 of the second lens E2 on the optical axis, the maximum thickness CP2 of the second spacer P2, the inner diameter d2s of the object side surface of the second spacer P2, and the inner diameter d5s of the object side surface of the fifth spacer P5 satisfy the following condition: 14 < (d5s / CP2) / (R2 / R1+d2s / CT2) < 24. By arranging the second spacer P2 and the fifth spacer P5 and using the above condition, the embodiments of the present application can not only effectively realize the sharing of the large field of view on the object side, improve the correction ability of the subsequent optical group to the off-axis aberration, and further obtain better imaging effect, but also can control the width of the second spacer P2, thereby increasing the shielding area of the second spacer P2 to the second lens E2 and the third lens E3. The larger the shielding area is, the more reflection light lines the second spacer P2 shields, thereby more helping to improve the stray light of the optical lens as a whole.

[0058] In some embodiments, a spacer is arranged between the fifth lens E5 and the sixth lens E6, and the spacer arranged between the fifth lens E5 and the sixth lens E6 is a fifth spacer P5. Further, the air gap T23 of the second lens E2 and the third lens E3 on the optical axis, the effective focal length f5 of the fifth lens E5, the radius of curvature R9 of the object side surface of the fifth lens E5, the inner diameter d1s of the object side surface of the first spacer P1, the outer diameter D1s of the object side surface of the first spacer P1, and the inner diameter d5m of the image side surface of the fifth spacer P5 satisfy the following condition: 10 < (f5*d1s+D1s*R9) / (d5m*T23) < 20. By arranging the fifth spacer P5 and using the above condition, the embodiments of the present application can not only effectively control the effective focal length f5 of the fifth lens E5 and the radius of curvature of the object side surface of the fifth lens E5, but also control the radial dimension of the fifth spacer P5, thereby effectively controlling the astigmatism of the optical system, improving the imaging quality of the off-axis field of view, and ensuring that the mating surface of the first lens E1 and the lens barrel and the mating surface of the first lens E1 and the first spacer P1 coincide on the same straight line. The larger the coinciding area is, the better the assembly stability is.

[0059] In some embodiments, a spacer is arranged between the second lens E2 and the third lens E3 and between the third lens E3 and the fourth lens E4; wherein the spacer arranged between the second lens E2 and the third lens E3 is a second spacer P2, and the spacer arranged between the third lens E3 and the fourth lens E4 is a third spacer P3. Further, the end face inner diameter d0m of the lens barrel towards the image side, the air interval T12 of the first lens E1 and the second lens E2 on the optical axis, the air interval T34 of the third lens E3 and the fourth lens E4 on the optical axis, the image side face outer diameter D1m of the first spacer P1, and the interval EP23 of the image side face of the second spacer P2 and the object side face of the third spacer P3 on the optical axis satisfy the following condition: 20 < (D1m+d0m) / (T12+T34+EP23) < 30. By arranging the second spacer P2 and the third spacer P3 and using the above condition, the present embodiment can not only effectively control the interception effect of the first spacer P1 on the emergent light of the first lens E1 under the premise of ensuring the illumination of the optical lens, that is, improve the interception of the emergent light of the first lens E1 by the first spacer P1, and further improve the stray light of the optical lens, thereby improving the imaging quality of the optical lens, but also improve the assembly stability of the lens located in the front part of the lens barrel, and improve the problem of low yield caused by the fitting amount.

[0060] In some embodiments, a spacer is arranged between the third lens E3 and the fourth lens E4 and between the fourth lens E4 and the fifth lens E5; the spacer arranged between the third lens E3 and the fourth lens E4 is the third spacer P3, and the spacer arranged between the fourth lens E4 and the fifth lens E5 is the fourth spacer P4. Further, the curvature radius R3 of the object side of the second lens E2, the curvature radius R4 of the image side of the second lens E2, the inner diameter d3s of the object side of the third spacer P3, and the outer diameter D4s of the object side of the fourth spacer P4 satisfy the following condition: 4 < (R3*R4) / (d3s*D4s) < 9. Since the imaging light rays pass through the refraction of the different lenses, i.e., the first lens E1 to the sixth lens E6, cross and converge, and finally converge to form an image at the imaging surface, the curvature radius of each lens affects the final imaging effect. In addition, the curvature radius R3 of the object side of the second lens E2 and the curvature radius R4 of the image side thereof not only jointly determine whether the second lens E2 is a concave lens or a convex lens, but also affect the structure of the other lenses between the second lens E2 and the imaging surface. In addition, the third spacer P3 is a component for connecting the third lens E3 and the fourth lens E4, which can ensure the integrity of the light rays, and the more complete the light rays, the better the imaging quality of the optical lens. The fourth spacer P4 is a component for connecting the fourth lens E4 and the fifth lens E5, and the larger the contact area of the fourth spacer P4 with the fourth lens E4 and the fifth lens E5, respectively, the better the assembly stability of the entire optical lens. Based on this, the embodiments of the present application can effectively ensure the imaging quality and assembly stability of the optical lens by arranging the third spacer P3 and the fourth spacer P4 and using the above condition.

[0061] In some embodiments, a spacer is arranged between the third lens E3 and the fourth lens E4 and between the fifth lens E5 and the sixth lens E6; the spacer arranged between the third lens E3 and the fourth lens E4 is the third spacer P3, and the spacer arranged between the fifth lens E5 and the sixth lens E6 is the fifth spacer P5. Further, the curvature radius R11 of the object side of the sixth lens E6, the curvature radius R12 of the image side of the sixth lens E6, the air gap T56 of the fifth lens E5 and the sixth lens E6 on the optical axis, the inner diameter d3m of the image side of the third spacer P3, and the outer diameter D5s of the object side of the fifth spacer P5 satisfy the following condition: 0 < T56*(R12-R11) / (d3m*D5s) < 5. The embodiments of the present application can control the ratio of the curvature radius R11 of the object side of the sixth lens E6 and the curvature radius R12 of the image side thereof to the radial dimension of the third spacer P3 and the radial dimension of the fifth spacer P5 within a reasonable range by arranging the third spacer P3 and the fifth spacer P5 and using the above condition, thereby helping to improve the assembly stability of the rear-end lens, i.e., the lens close to the imaging surface, limiting the assembly deformation of the lens group, and ensuring the strength.

[0062] In some embodiments, a spacer is arranged between the second lens E2 and the third lens E3, between the third lens E3 and the fourth lens E4, between the fourth lens E4 and the fifth lens E5, and between the fifth lens E5 and the sixth lens E6; wherein the spacer arranged between the second lens E2 and the third lens E3 is a second spacer P2, the spacer arranged between the third lens E3 and the fourth lens E4 is a third spacer P3, the spacer arranged between the fourth lens E4 and the fifth lens E5 is a fourth spacer P4, and the spacer arranged between the fifth lens E5 and the sixth lens E6 is a fifth spacer P5. Further, the effective focal length of the fourth lens E4 is f4, the radius of curvature of the image side surface of the fourth lens E4 is R8, the inner diameter of the image side surface of the second spacer P2 is d2m, the distance on the optical axis between the image side surface of the third spacer P3 and the object side surface of the fourth spacer P4 is EP34, the inner diameter of the image side surface of the fourth spacer P4 is d4m, and the outer diameter of the image side surface of the fifth spacer P5 is D5m, which satisfy the following condition: 26 < (D5m / EP34-f4 / R8) / (d2m / d4m) < 52. By arranging the second spacer P2 to the fifth spacer P5 and using the above condition, the shape of the fourth lens E4 can be reasonably controlled, and the cooperation mode and cooperation size of the fourth lens E4 with the third lens E3 and the fifth lens E5 can be affected, thereby ensuring the assembly stability of the rear-end lens, i.e., the lens close to the imaging surface.

[0063] In some embodiments, a spacer is arranged between the second lens E2 and the third lens E3, and between the fourth lens E4 and the fifth lens E5; wherein the spacer arranged between the second lens E2 and the third lens E3 is a second spacer P2, and the spacer arranged between the fourth lens E4 and the fifth lens E5 is a fourth spacer P4. Further, the central thickness CT5 of the fifth lens E5 on the optical axis, the air gap T56 of the fifth lens E5 and the sixth lens E6 on the optical axis, the outer diameter D2s of the object side of the second spacer P2, the inner diameter d4s of the object side of the fourth spacer P4, the maximum thickness CP4 of the fourth spacer P4, and the inner diameter d6s of the object side of the sixth spacer P6 satisfy the following condition: 4 < (D2s*d4s*CT5) / (d6s*CP4*T56) < 54. By arranging the second spacer P2 and the fourth spacer P4 and using the above condition, the embodiments of the present application not only help to control the thickness of the fifth lens E5, the thickness of the sixth lens E6, and the air gap T56 of the fifth lens E5 and the sixth lens E6 on the optical axis, but also because the larger the distance between the lenses, the easier the selection and matching of the spacers, for example, the larger the distance between the fifth lens E5 and the sixth lens E6, the easier the selection and matching of the fifth spacer P5, and the larger the stray light improvement space, therefore the embodiments of the present application can better control the cooperation mode of the fourth lens E4, the fifth lens E5 and the sixth lens E6, and are more conducive to the improvement of the overall stray light quality of the optical lens.

[0064] In some embodiments, a spacer is arranged between the second lens E2 and the third lens E3; wherein the spacer arranged between the second lens E2 and the third lens E3 is a second spacer P2. Further, the total effective focal length f of the optical lens, the outer diameter D0s of the end face towards the object side of the barrel, the central thickness CT3 of the third lens E3 on the optical axis, the outer diameter D2m of the image side of the second spacer P2, the inner diameter d6m of the image side of the sixth spacer P6, and the outer diameter D6s of the object side of the sixth spacer P6 satisfy the following condition: 52 < (d6m*D6s+D2m*f) / (CT3*D0s) < 72. Since the outer diameter D0s of the end face towards the object side of the barrel determines the size of the head of the optical lens, and for a camera module with a certain opening size, if the size of the head of the optical lens is slightly larger than the opening size, the overall appearance effect of the camera module is optimal; if the size of the head of the optical lens is significantly larger than the opening size, the overall appearance effect of the camera module is suboptimal; conversely, if the size of the head of the optical lens is smaller than the opening size, the overall appearance effect of the camera module is the worst, therefore based on the above reasons, by arranging the second spacer P2 and the sixth spacer P6 and using the above condition, the embodiments of the present application can effectively control the wall thickness of the barrel, and the thicker the wall thickness of the barrel, the greater the pressure that the lens group can withstand during assembly, thereby the better the assembly stability of the front end of the optical lens, and thus the reliability of the optical lens under different conditions can be improved.

[0065] In some embodiments, the optical lens in the embodiments of the present application further comprises a filter and / or a protective glass arranged between the sixth lens E6 and the imaging surface, for filtering light with different wavelengths and preventing the image-side elements of the optical lens, such as a chip, from being damaged.

[0066] In some embodiments, a stop STO is arranged between the object plane OBJ and the first lens E1. The arrangement of the stop STO is conducive to effectively converging the light entering the optical lens and reducing the aperture of the lens. Further, the stop STO can be arranged adjacent to the object side of the first lens E1.

[0067] In some embodiments, any one of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5 and the sixth lens E6 can be a spherical lens or an aspherical lens, and the embodiments of the present application do not limit the number of spherical lenses and aspherical lenses. It should be noted that, compared with the curvature of the spherical lens being constant from the center of the lens to the periphery of the lens, the curvature of the aspherical lens is continuously changed from the center of the lens to the periphery of the lens, and the aspherical lens has better curvature radius characteristics and has the advantages of improving the distortion aberration and improving the astigmatism aberration. If the resolution quality is to be improved, the number of aspherical lenses in the lens group can be increased. For example, the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5 and the sixth lens E6 can all be aspherical lenses. Such an arrangement can eliminate the aberration that occurs during imaging as much as possible, thereby improving the imaging quality of the optical lens and improving the resolving power.

[0068] In some embodiments, any one of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5 and the sixth lens E6 can be a glass lens or a plastic lens. Compared with the plastic lens, the glass lens can not only suppress the shift of the back focus of the optical lens with the temperature change and improve the stability, but also avoid the imaging blur caused by the temperature change in the high-temperature and low-temperature environment and even affect the normal use of the optical lens. If the temperature performance and the resolution quality are required to be high, the first lens E1 to the sixth lens E6 can all adopt glass aspherical lenses. Conversely, if the temperature of the use environment is not high and the temperature difference changes little, the first lens E1 to the sixth lens E6 can all adopt plastic lenses with lower cost. Of course, the first lens E1 to the sixth lens E6 can also adopt glass lenses for a part and plastic lenses for the remaining part.

[0069] Example 1-1

[0070] The following refers to Figure 2 The optical lens according to the embodiment 1-1 of the present application is described. Figure 2A structural schematic diagram of an optical lens according to Embodiment 1-1 of the present application is shown.

[0071] As shown in Figure 2 the optical lens in the present application includes a lens barrel and first to sixth lenses E1-E6 arranged in the lens barrel in order from the object side to the image side along the optical axis. The first to sixth lenses E1-E6 are all aspherical lenses. The object side surface S1 of the first lens E1 is a convex surface, and the image side surface S2 of the first lens E1 is a concave surface. The object side surface S3 of the second lens E2 is a convex surface, and the image side surface S4 of the second lens E2 is a concave surface. The object side surface S5 of the third lens E3 is a convex surface, and the image side surface S6 of the third lens E3 is a concave surface. The object side surface S7 of the fourth lens E4 is a convex surface, and the image side surface S8 of the fourth lens E4 is a concave surface. The object side surface S9 and the image side surface S10 of the fifth lens E5 are both convex surfaces. The object side surface S11 and the image side surface S12 of the sixth lens E6 are both concave surfaces. The first to sixth lenses E1-E6 are arranged in the lens barrel in order from the object side to the image side along the optical axis. The first lens E1 and the second lens E2 are separated by a first spacer P1, the second lens E2 and the third lens E3 are separated by a second spacer P2, the third lens E3 and the fourth lens E4 are separated by a third spacer P3, the fourth lens E4 and the fifth lens E5 are separated by a fourth spacer P4, the fifth lens E5 and the sixth lens E6 are separated by a fifth spacer P5, and the image side surface of the sixth lens E6 is provided with a sixth spacer P6, and the edge of the image side surface of the sixth lens E6 is in contact with the object side surface of the sixth spacer P6.

[0072] Further, a stop STO is arranged between the object plane OBJ and the first lens E1. The stop STO is arranged to effectively converge the light entering the optical lens, and to reduce the aperture of the lens. Further, the stop STO can be arranged adjacent to the object side surface of the first lens E1.

[0073] In addition, the optical lens further includes a protective glass, which is located between the sixth lens E6 and the imaging plane, the object side surface of the protective glass faces the image side surface of the sixth lens E6, and the image side surface of the protective glass faces the imaging plane. The protective glass is used to protect the image sensor chip located at the imaging plane. In some embodiments, the optical lens further includes a filter, which is located between the sixth lens E6 and the imaging plane, and the filter is used to correct color deviation.

[0074] The following Table 1 shows the surface type, curvature radius, thickness / distance, material and conic constant of each lens of the optical lens in Embodiment 1-1. Those skilled in the art should understand that the “thickness / distance” in line with the surface number S1 refers to the center thickness of the first lens E1, the “thickness / distance” in line with the surface number S2 refers to the air gap between the first lens E1 and the second lens E2, the “thickness / distance” in line with the surface number S3 refers to the center thickness of the second lens E2, and so on.

[0075] Table 1

[0076]

[0077] The following Table 2 shows the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for surface No. S1 to surface No. S12 in Example 1-1.

[0078] Table 2

[0079] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -7.0459E-03 7.2541E-03 -3.0936E-02 6.0988E-02 -8.2382E-02 6.9966E-02 -3.6879E-02 1.0774E-02 -1.3481E-03 S2 -6.7818E-02 1.6973E-02 6.5328E-02 -1.6314E-01 1.7474E-01 -9.7622E-02 1.7212E-02 8.4809E-03 -3.6509E-03 S3 -6.6360E-02 7.2838E-02 1.0129E-01 -3.4284E-01 4.7034E-01 -3.7635E-01 1.8355E-01 -4.9195E-02 5.2542E-03 S4 -2.3005E-02 1.3118E-01 -3.1494E-01 1.0269E+00 -2.2732E+00 3.0702E+00 -2.4351E+00 1.0458E+00 -1.8588E-01 S5 -6.7097E-02 -9.8879E-02 5.6079E-01 -1.9529E+00 3.9703E+00 -5.0295E+00 3.8858E+00 -1.6764E+00 3.1084E-01 S6 -8.4071E-02 -4.4901E-02 4.0799E-01 -1.2941E+00 2.2039E+00 -2.2908E+00 1.4446E+00 -5.0436E-01 7.4650E-02 S7 -1.9657E-01 1.7625E-01 -2.1614E-01 3.4913E-01 -4.8314E-01 4.1480E-01 -1.9748E-01 4.7776E-02 -4.6219E-03 S8 -2.1732E-01 2.0749E-01 -2.9330E-01 4.1942E-01 -4.3306E-01 2.8497E-01 -1.1049E-01 2.2839E-02 -1.9381E-03 S9 -4.6487E-02 -7.6787E-03 1.5868E-02 -1.1507E-02 5.4719E-03 -2.1232E-03 5.5017E-04 -7.4956E-05 4.0041E-06 S10 7.9674E-03 -1.5927E-02 5.4224E-03 3.9883E-03 -3.9603E-03 1.3903E-03 -2.4906E-04 2.2862E-05 -8.5353E-07 S11 -2.2532E-01 9.7911E-02 -2.3404E-02 4.0546E-03 -5.6662E-04 6.0977E-05 -4.4435E-06 1.8758E-07 -3.4173E-09 S12 -2.1009E-01 9.8390E-02 -3.3476E-02 8.0629E-03 -1.3403E-03 1.4805E-04 -1.0278E-05 4.0338E-07 -6.7980E-09

[0080] The following Table 3 shows the image-side inner diameters d1m to d6m of the first to sixth spacers P1 to P6, the object-side inner diameters d1s to d6s of the first to sixth spacers P1 to P6, the object-side outer diameters D1s and D2s of the first and second spacers P1 and P2, the object-side outer diameters D4s to D6s of the fourth to sixth spacers P4 to P6, the image-side outer diameters D1m and D2m of the first and second spacers P1 and P2, the image-side outer diameters D5m and D6m of the fifth and sixth spacers P5 and P6, the inner diameter d0m of the end surface of the lens barrel toward the image side, the outer diameter D0m of the end surface of the lens barrel toward the image side, the outer diameter D0s of the end surface of the lens barrel toward the object side, the maximum thicknesses CP1 and CP2 of the first and second spacers P1 and P2, the maximum thicknesses CP4 and CP5 of the fourth and fifth spacers P4 and P5, the distance EP12 on the optical axis between the image-side surface of the first spacer P1 and the object-side surface of the second spacer P2, the distance EP23 on the optical axis between the image-side surface of the second spacer P2 and the object-side surface of the third spacer P3, and the distance EP34 on the optical axis between the image-side surface of the third spacer P3 and the object-side surface of the fourth spacer P4 in the optical lens according to Example 1-1.

[0081] Table 3

[0082] Parameter d1s (mm) d1m (mm) D1s (mm) D1m (mm) d2s (mm) d2m (mm) D2s (mm) D2m (mm) Value 2.365 2.410 4.600 4.600 2.246 2.222 4.800 4.800 Parameter d3s (mm) d3m (mm) d4s (mm) d4m (mm) D4s (mm) d5s (mm) d5m (mm) D5s (mm) Value 2.674 2.674 3.744 4.447 5.105 5.485 6.703 7.202 Parameter D5m (mm) d6s (mm) d6m (mm) D6m (mm) D6s (mm) d0m (mm) D0m (mm) D0s (mm) Value 8.380 7.580 7.841 8.209 8.303 9.564 10.153 4.992 Parameter CP1 (mm) EP12 (mm) CP2 (mm) EP23 (mm) EP34 (mm) CP4 (mm) CP5 (mm) Value 0.024 0.448 0.020 0.265 0.381 0.200 0.300

[0083] Example 1-2

[0084] The following Table 4 shows the high-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 for surface No. S1 to surface No. S12 in Example 1-2. Figure 3 An optical lens according to Example 1-2 of the present application is described. For brevity, some similar descriptions as in Example 1-1 will be omitted in this example. Figure 3 A structure diagram of the optical lens according to Example 1-2 of the present application is shown.

[0085] As Figure 3As shown, in this embodiment of the application, the optical lens includes a lens barrel and 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 disposed within the lens barrel and arranged sequentially from the object side to the image side along the optical axis. The first lens E1 to the sixth lens E6 are all aspherical lenses. The object side S1 of the first lens E1 is convex, and the image side S2 of the first lens E1 is concave. The object side S3 of the second lens E2 is convex, and the image side S4 of the second lens E2 is concave. The object side S5 of the third lens E3 is convex, and the image side S6 of the third lens E3 is concave. The object side S7 of the fourth lens E4 is convex, and the image side S8 of the fourth lens E4 is concave. The object side S9 and the image side S10 of the fifth lens E5 are both convex. The object side S11 and the image side S12 of the sixth lens E6 are both concave. Specifically, a first spacer P1 is provided between the first lens E1 and the second lens E2, a second spacer P2 is provided between the second lens E2 and the third lens E3, a third spacer P3 is provided between the third lens E3 and the fourth lens E4, a fourth spacer P4 is provided between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 is provided between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 is provided on the image side of the sixth lens E6, with the edge of the image side of the sixth lens E6 contacting the object side of the sixth spacer P6.

[0086] Furthermore, an aperture stop STO is provided between the object plane OBJ and the first lens E1. The placement of the aperture stop STO is beneficial for effectively converging the light entering the optical lens, and for reducing the lens aperture. Furthermore, the aperture stop STO can be positioned close to the object side of the first lens E1.

[0087] In addition, the optical lens also includes a protective glass located between the sixth lens E6 and the imaging plane. The object side of the protective glass faces the image side of the sixth lens E6, and the image side of the protective glass faces the imaging plane. The protective glass is used to protect the image sensor chip located at the imaging plane. In some embodiments, the optical lens also includes a filter located between the sixth lens E6 and the imaging plane. The filter is used to correct color deviation.

[0088] In this embodiment, the surface type, radius of curvature, thickness / distance, material, and conic coefficient of each lens in the optical lens can adopt the parameters in Table 1 of Embodiment 1-1. Furthermore, the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of surfaces S1 to S12 in this embodiment can adopt the parameters in Table 2 of Embodiment 1-1.

[0089] Table 4 below shows the image-side inner diameters d1m to d6m of the first spacer P1 to the sixth spacer P6, the object-side inner diameters d1s to d6s of the first spacer P1 to the sixth spacer P6, the object-side outer diameters D1s and D2s of the first spacer P1 and the second spacer P2, the object-side outer diameters D4s to D6s of the fourth spacer P4 to the sixth spacer P6, the image-side outer diameters D1m and D2m of the first spacer P1 and the second spacer P2, the image-side outer diameters D5m and D6m of the fifth spacer P5 and the sixth spacer P6, and the lens barrel facing the image side in the optical lenses of Examples 1-2. The inner diameter of the end face d0m, the outer diameter of the end face facing the image side of the lens barrel D0m, the outer diameter of the end face facing the object side of the lens barrel D0s, the maximum thicknesses of the first spacer P1 and the second spacer P2 CP1 and CP2, the maximum thicknesses of the fourth spacer P4 and the fifth spacer P5 CP4 and CP5, the distance on the optical axis between the image side of the first spacer P1 and the object side of the second spacer P2 EP12, the distance on the optical axis between the image side of the second spacer P2 and the object side of the third spacer P3 EP23, and the distance on the optical axis between the image side of the third spacer P3 and the object side of the fourth spacer P4 EP34.

[0090] Table 4

[0091] Parameter d1s (mm) d1m (mm) D1s (mm) D1m (mm) d2s (mm) d2m (mm) D2s (mm) D2m (mm) Value 2.410 2.410 4.600 4.600 2.246 2.246 4.800 4.800 Parameter d3s (mm) d3m (mm) d4s (mm) d4m (mm) D4s (mm) d5s (mm) d5m (mm) D5s (mm) Value 2.674 2.674 3.744 4.411 5.072 5.485 6.608 7.153 Parameter D5m (mm) d6s (mm) d6m (mm) D6m (mm) D6s (mm) d0m (mm) D0m (mm) D0s (mm) Value 8.380 7.601 7.828 8.209 8.392 9.471 10.111 4.784 Parameter CP1 (mm) EP12 (mm) CP2 (mm) EP23 (mm) EP34 (mm) CP4 (mm) CP5 (mm) Value 0.024 0.448 0.020 0.265 0.381 0.200 0.300

[0092] Example 1-3

[0093] The following is for reference Figure 4 Optical lenses according to embodiments 1-3 of this application are described. For the sake of brevity, descriptions similar to those in embodiments 1-1 will be omitted in this embodiment. Figure 4 A schematic diagram of the structure of an optical lens according to embodiments 1-3 of this application is shown.

[0094] like Figure 4As shown, in this embodiment of the application, the optical lens includes a lens barrel and 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 disposed within the lens barrel and arranged sequentially from the object side to the image side along the optical axis. The first lens E1 to the sixth lens E6 are all aspherical lenses. The object side S1 of the first lens E1 is convex, and the image side S2 of the first lens E1 is concave. The object side S3 of the second lens E2 is convex, and the image side S4 of the second lens E2 is concave. The object side S5 of the third lens E3 is convex, and the image side S6 of the third lens E3 is concave. The object side S7 of the fourth lens E4 is convex, and the image side S8 of the fourth lens E4 is concave. The object side S9 and the image side S10 of the fifth lens E5 are both convex. The object side S11 and the image side S12 of the sixth lens E6 are both concave. Specifically, a first spacer P1 is provided between the first lens E1 and the second lens E2, a second spacer P2 is provided between the second lens E2 and the third lens E3, a third spacer P3 is provided between the third lens E3 and the fourth lens E4, a fourth spacer P4 is provided between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 is provided between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 is provided on the image side of the sixth lens E6, with the edge of the image side of the sixth lens E6 contacting the object side of the sixth spacer P6.

[0095] Furthermore, an aperture stop STO is provided between the object plane OBJ and the first lens E1. The placement of the aperture stop STO is beneficial for effectively converging the light entering the optical lens, and for reducing the lens aperture. Furthermore, the aperture stop STO can be positioned close to the object side of the first lens E1.

[0096] In addition, the optical lens also includes a protective glass located between the sixth lens E6 and the imaging plane. The object side of the protective glass faces the image side of the sixth lens E6, and the image side of the protective glass faces the imaging plane. The protective glass is used to protect the image sensor chip located at the imaging plane. In some embodiments, the optical lens also includes a filter located between the sixth lens E6 and the imaging plane. The filter is used to correct color deviation.

[0097] In this embodiment, the surface type, radius of curvature, thickness / distance, material, and conic coefficient of each lens in the optical lens can adopt the parameters in Table 1 of Embodiment 1-1. Furthermore, the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of surfaces S1 to S12 in this embodiment can adopt the parameters in Table 2 of Embodiment 1-1.

[0098] Table 5 below shows the image-side inner diameters d1m to d6m of the first spacer P1 to the sixth spacer P6, the object-side inner diameters d1s to d6s of the first spacer P1 to the sixth spacer P6, the object-side outer diameters D1s and D2s of the first spacer P1 and the second spacer P2, the object-side outer diameters D4s to D6s of the fourth spacer P4 to the sixth spacer P6, the image-side outer diameters D1m and D2m of the first spacer P1 and the second spacer P2, the image-side outer diameters D5m and D6m of the fifth spacer P5 and the sixth spacer P6, and the lens barrel facing the image side in the optical lenses of Examples 1-3. The inner diameter of the end face d0m, the outer diameter of the end face facing the image side of the lens barrel D0m, the outer diameter of the end face facing the object side of the lens barrel D0s, the maximum thicknesses of the first spacer P1 and the second spacer P2 CP1 and CP2, the maximum thicknesses of the fourth spacer P4 and the fifth spacer P5 CP4 and CP5, the distance on the optical axis between the image side of the first spacer P1 and the object side of the second spacer P2 EP12, the distance on the optical axis between the image side of the second spacer P2 and the object side of the third spacer P3 EP23, and the distance on the optical axis between the image side of the third spacer P3 and the object side of the fourth spacer P4 EP34.

[0099] Table 5

[0100] Parameter d1s (mm) d1m (mm) D1s (mm) D1m (mm) d2s (mm) d2m (mm) D2s (mm) D2m (mm) Value 2.410 2.436 4.600 4.600 2.265 2.246 4.800 4.800 Parameter d3s (mm) d3m (mm) d4s (mm) d4m (mm) D4s (mm) d5s (mm) d5m (mm) D5s (mm) Value 2.674 2.674 3.791 4.447 5.189 5.550 6.703 7.286 Parameter D5m (mm) d6s (mm) d6m (mm) D6m (mm) D6s (mm) d0m (mm) D0m (mm) D0s (mm) Value 8.380 7.646 7.841 8.209 8.330 9.619 10.212 5.043 Parameter CP1 (mm) EP12 (mm) CP2 (mm) EP23 (mm) EP34 (mm) CP4 (mm) CP5 (mm) Value 0.022 0.448 0.020 0.265 0.381 0.200 0.300

[0101] In conclusion, Figure 5 The on-axis chromatic aberration curves of the optical lenses of Embodiments 1-1, 1-2, or 1-3 are shown, which represent the deviation of the convergence focal point of light of different wavelengths after passing through the optical system. Figure 6 The astigmatism curves of the optical lenses of Embodiment 1-1, Embodiment 1-2, or Embodiment 1-3 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 7 The distortion curves of the optical lenses of Embodiments 1-1, 1-2, or 1-3 are shown, representing the distortion values ​​corresponding to different image heights. Therefore, in conjunction with... Figures 5 to 7 It can be seen that the optical lenses provided in Examples 1-1 to 1-3 have good imaging quality.

[0102] Example 2-1

[0103] The following is for reference Figure 8 An optical lens according to Embodiment 2-1 of this application is described. Figure 8 A schematic diagram of the structure of an optical lens according to Embodiment 2-1 of this application is shown.

[0104] like Figure 8As shown, in this embodiment of the application, the optical lens includes a lens barrel and 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 disposed within the lens barrel and arranged sequentially from the object side to the image side along the optical axis. The first lens E1 to the sixth lens E6 are all aspherical lenses. The object side S1 of the first lens E1 is convex, and the image side S2 of the first lens E1 is concave. The object side S3 of the second lens E2 is convex, and the image side S4 of the second lens E2 is concave. The object side S5 of the third lens E3 is convex, and the image side S6 of the third lens E3 is concave. The object side S7 and the image side S8 of the fourth lens E4 are both concave. The object side S9 and the image side S10 of the fifth lens E5 are both convex. The object side S11 and the image side S12 of the sixth lens E6 are both concave. Specifically, a first spacer P1 is provided between the first lens E1 and the second lens E2, a second spacer P2 is provided between the second lens E2 and the third lens E3, a third spacer P3 is provided between the third lens E3 and the fourth lens E4, a fourth spacer P4 is provided between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 is provided between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 is provided on the image side of the sixth lens E6, with the edge of the image side of the sixth lens E6 contacting the object side of the sixth spacer P6.

[0105] Furthermore, an aperture stop STO is provided between the object plane OBJ and the first lens E1. The placement of the aperture stop STO is beneficial for effectively converging the light entering the optical lens, and for reducing the lens aperture. Furthermore, the aperture stop STO can be positioned close to the object side of the first lens E1.

[0106] In addition, the optical lens also includes a protective glass located between the sixth lens E6 and the imaging plane. The object side of the protective glass faces the image side of the sixth lens E6, and the image side of the protective glass faces the imaging plane. The protective glass is used to protect the image sensor chip located at the imaging plane. In some embodiments, the optical lens also includes a filter located between the sixth lens E6 and the imaging plane. The filter is used to correct color deviation.

[0107] Table 6 below shows the surface type, radius of curvature, thickness / distance, material, and conic coefficient of each lens in the optical lens of Embodiment 2-1. Those skilled in the art will understand that the “thickness / distance” in the same row as surface number S1 refers to the center thickness of the first lens E1, the “thickness / distance” in the same row as surface number S2 refers to the air gap between the first lens E1 and the second lens E2, the “thickness / distance” in the same row as surface number S3 refers to the center thickness of the second lens E2, and so on.

[0108] Table 6

[0109]

[0110] Table 7 below shows the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for surface numbers S1 to S12 in Example 2-1.

[0111] Table 7

[0112] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -6.2208E-03 2.0488E-03 -7.3112E-03 2.1168E-03 5.9018E-03 -1.0828E-02 7.4871E-03 -2.6482E-03 3.6722E-04 S2 -6.1482E-02 1.2737E-02 4.0368E-02 -6.8776E-02 -4.4522E-03 1.0935E-01 -1.2744E-01 6.4323E-02 -1.2733E-02 S3 -6.1242E-02 6.0425E-02 9.9580E-02 -2.9936E-01 3.7730E-01 -2.6550E-01 1.0253E-01 -1.5845E-02 -5.0530E-04 S4 -1.8296E-02 9.3347E-02 -1.4555E-01 4.9023E-01 -1.1725E+00 1.6450E+00 -1.3146E+00 5.5610E-01 -9.4524E-02 S5 -5.0902E-02 -1.0509E-01 5.0598E-01 -1.6714E+00 3.3057E+00 -4.1052E+00 3.1182E+00 -1.3294E+00 2.4588E-01 S6 -6.1571E-02 -5.7688E-02 3.1068E-01 -8.7896E-01 1.3938E+00 -1.3691E+00 8.1814E-01 -2.7069E-01 3.8271E-02 S7 -1.7744E-01 1.0624E-01 1.9977E-02 -2.1212E-01 3.5089E-01 -3.3572E-01 1.9719E-01 -6.3835E-02 8.5284E-03 S8 -2.1315E-01 1.6961E-01 -1.7719E-01 2.0175E-01 -1.8350E-01 1.1546E-01 -4.4403E-02 9.1892E-03 -7.8036E-04 S9 -3.5561E-02 9.0158E-03 -3.0506E-02 3.2768E-02 -2.1420E-02 8.6886E-03 -2.1096E-03 2.7887E-04 -1.5294E-05 S10 2.7693E-02 -1.5229E-02 -1.0307E-02 1.0812E-02 -5.0114E-03 1.3988E-03 -2.3062E-04 2.0431E-05 -7.4737E-07 S11 -1.6417E-01 7.7505E-02 -2.9556E-02 8.5542E-03 -1.6219E-03 1.9301E-04 -1.3944E-05 5.6069E-07 -9.6495E-09 S12 -1.5582E-01 7.5738E-02 -2.7419E-02 6.6383E-03 -1.0596E-03 1.0990E-04 -7.1329E-06 2.6289E-07 -4.1823E-09

[0113] Table 8 below shows the image-side inner diameters d1m to d6m of the first spacer P1 to the sixth spacer P6, the object-side inner diameters d1s to d6s of the first spacer P1 to the sixth spacer P6, the object-side outer diameters D1s and D2s of the first spacer P1 and the second spacer P2, the object-side outer diameters D4s to D6s of the fourth spacer P4 to the sixth spacer P6, the image-side outer diameters D1m and D2m of the first spacer P1 and the second spacer P2, the image-side outer diameters D5m and D6m of the fifth spacer P5 and the sixth spacer P6, and the lens barrel facing the image side in the optical lens of Embodiment 2-1. The inner diameter of the end face d0m, the outer diameter of the end face facing the image side of the lens barrel D0m, the outer diameter of the end face facing the object side of the lens barrel D0s, the maximum thicknesses of the first spacer P1 and the second spacer P2 CP1 and CP2, the maximum thicknesses of the fourth spacer P4 and the fifth spacer P5 CP4 and CP5, the distance on the optical axis between the image side of the first spacer P1 and the object side of the second spacer P2 EP12, the distance on the optical axis between the image side of the second spacer P2 and the object side of the third spacer P3 EP23, and the distance on the optical axis between the image side of the third spacer P3 and the object side of the fourth spacer P4 EP34.

[0114] Table 8

[0115] Parameter d1s (mm) d1m (mm) D1s (mm) D1m (mm) d2s (mm) d2m (mm) D2s (mm) D2m (mm) Value 2.265 2.310 4.500 4.500 2.146 2.122 4.700 4.700 Parameter d3s (mm) d3m (mm) d4s (mm) d4m (mm) D4s (mm) d5s (mm) d5m (mm) D5s (mm) Value 2.613 2.613 3.644 4.347 5.005 5.385 6.158 7.102 Parameter D5m (mm) d6s (mm) d6m (mm) D6m (mm) D6s (mm) d0m (mm) D0m (mm) D0s (mm) Value 8.280 7.480 7.741 8.109 8.248 9.464 10.053 4.892 Parameter CP1 (mm) EP12 (mm) CP2 (mm) EP23 (mm) EP34 (mm) CP4 (mm) CP5 (mm) Value 0.024 0.448 0.020 0.265 0.381 0.200 0.190

[0116] Example 2-2

[0117] The following is for reference Figure 9 An optical lens according to Embodiment 2-2 of this application is described. For the sake of brevity, descriptions similar to those in Embodiment 2-1 will be omitted in this embodiment. Figure 9 A schematic diagram of the structure of an optical lens according to Embodiment 2-2 of this application is shown.

[0118] like Figure 9As shown, in this embodiment of the application, the optical lens includes a lens barrel and 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 disposed within the lens barrel and arranged sequentially from the object side to the image side along the optical axis. The first lens E1 to the sixth lens E6 are all aspherical lenses. The object side S1 of the first lens E1 is convex, and the image side S2 of the first lens E1 is concave. The object side S3 of the second lens E2 is convex, and the image side S4 of the second lens E2 is concave. The object side S5 of the third lens E3 is convex, and the image side S6 of the third lens E3 is concave. The object side S7 and the image side S8 of the fourth lens E4 are both concave. The object side S9 and the image side S10 of the fifth lens E5 are both convex. The object side S11 and the image side S12 of the sixth lens E6 are both concave. Specifically, a first spacer P1 is provided between the first lens E1 and the second lens E2, a second spacer P2 is provided between the second lens E2 and the third lens E3, a third spacer P3 is provided between the third lens E3 and the fourth lens E4, a fourth spacer P4 is provided between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 is provided between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 is provided on the image side of the sixth lens E6, with the edge of the image side of the sixth lens E6 contacting the object side of the sixth spacer P6.

[0119] Furthermore, an aperture stop STO is provided between the object plane OBJ and the first lens E1. The placement of the aperture stop STO is beneficial for effectively converging the light entering the optical lens, and for reducing the lens aperture. Furthermore, the aperture stop STO can be positioned close to the object side of the first lens E1.

[0120] In addition, the optical lens also includes a protective glass located between the sixth lens E6 and the imaging plane. The object side of the protective glass faces the image side of the sixth lens E6, and the image side of the protective glass faces the imaging plane. The protective glass is used to protect the image sensor chip located at the imaging plane. In some embodiments, the optical lens also includes a filter located between the sixth lens E6 and the imaging plane. The filter is used to correct color deviation.

[0121] In this embodiment, the surface type, radius of curvature, thickness / distance, material, and conic coefficient of each lens in the optical lens can adopt the parameters in Table 6 of Embodiment 2-1. Furthermore, the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of surfaces S1 to S12 in this embodiment can adopt the parameters in Table 7 of Embodiment 2-1.

[0122] Table 9 below shows the image-side inner diameters d1m to d6m of the first spacer P1 to the sixth spacer P6, the object-side inner diameters d1s to d6s of the first spacer P1 to the sixth spacer P6, the object-side outer diameters D1s and D2s of the first spacer P1 and the second spacer P2, the object-side outer diameters D4s to D6s of the fourth spacer P4 to the sixth spacer P6, the image-side outer diameters D1m and D2m of the first spacer P1 and the second spacer P2, the image-side outer diameters D5m and D6m of the fifth spacer P5 and the sixth spacer P6, and the lens barrel facing the image side in the optical lens of Embodiment 2-2. The inner diameter of the end face d0m, the outer diameter of the end face facing the image side of the lens barrel D0m, the outer diameter of the end face facing the object side of the lens barrel D0s, the maximum thicknesses of the first spacer P1 and the second spacer P2 CP1 and CP2, the maximum thicknesses of the fourth spacer P4 and the fifth spacer P5 CP4 and CP5, the distance on the optical axis between the image side of the first spacer P1 and the object side of the second spacer P2 EP12, the distance on the optical axis between the image side of the second spacer P2 and the object side of the third spacer P3 EP23, and the distance on the optical axis between the image side of the third spacer P3 and the object side of the fourth spacer P4 EP34.

[0123] Table 9

[0124]

[0125]

[0126] Example 2-3

[0127] The following is for reference Figure 10 Optical lenses according to embodiments 2-3 of this application are described. For the sake of brevity, descriptions similar to those in embodiments 2-1 will be omitted in this embodiment. Figure 10 A schematic diagram of the structure of an optical lens according to embodiments 2-3 of this application is shown.

[0128] like Figure 10As shown, in this embodiment of the application, the optical lens includes a lens barrel and 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 disposed within the lens barrel and arranged sequentially from the object side to the image side along the optical axis. The first lens E1 to the sixth lens E6 are all aspherical lenses. The object side S1 of the first lens E1 is convex, and the image side S2 of the first lens E1 is concave. The object side S3 of the second lens E2 is convex, and the image side S4 of the second lens E2 is concave. The object side S5 of the third lens E3 is convex, and the image side S6 of the third lens E3 is concave. The object side S7 and the image side S8 of the fourth lens E4 are both concave. The object side S9 and the image side S10 of the fifth lens E5 are both convex. The object side S11 and the image side S12 of the sixth lens E6 are both concave. Specifically, a first spacer P1 is provided between the first lens E1 and the second lens E2, a second spacer P2 is provided between the second lens E2 and the third lens E3, a third spacer P3 is provided between the third lens E3 and the fourth lens E4, a fourth spacer P4 is provided between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 is provided between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 is provided on the image side of the sixth lens E6, with the edge of the image side of the sixth lens E6 contacting the object side of the sixth spacer P6.

[0129] Furthermore, an aperture stop STO is provided between the object plane OBJ and the first lens E1. The placement of the aperture stop STO is beneficial for effectively converging the light entering the optical lens, and for reducing the lens aperture. Furthermore, the aperture stop STO can be positioned close to the object side of the first lens E1.

[0130] In addition, the optical lens also includes a protective glass located between the sixth lens E6 and the imaging plane. The object side of the protective glass faces the image side of the sixth lens E6, and the image side of the protective glass faces the imaging plane. The protective glass is used to protect the image sensor chip located at the imaging plane. In some embodiments, the optical lens also includes a filter located between the sixth lens E6 and the imaging plane. The filter is used to correct color deviation.

[0131] In this embodiment, the surface type, radius of curvature, thickness / distance, material, and conic coefficient of each lens in the optical lens can adopt the parameters in Table 6 of Embodiment 2-1. Furthermore, the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of surfaces S1 to S12 in this embodiment can adopt the parameters in Table 7 of Embodiment 2-1.

[0132] Table 10 below shows the image-side inner diameters d1m to d6m of the first spacer P1 to the sixth spacer P6, the object-side inner diameters d1s to d6s of the first spacer P1 to the sixth spacer P6, the object-side outer diameters D1s and D2s of the first spacer P1 and the second spacer P2, the object-side outer diameters D4s to D6s of the fourth spacer P4 to the sixth spacer P6, the image-side outer diameters D1m and D2m of the first spacer P1 and the second spacer P2, the image-side outer diameters D5m and D6m of the fifth spacer P5 and the sixth spacer P6, and the lens barrel facing the image side in the optical lenses of Examples 2-3. The inner diameter of the end face d0m, the outer diameter of the end face facing the image side of the lens barrel D0m, the outer diameter of the end face facing the object side of the lens barrel D0s, the maximum thicknesses of the first spacer P1 and the second spacer P2 CP1 and CP2, the maximum thicknesses of the fourth spacer P4 and the fifth spacer P5 CP4 and CP5, the distance on the optical axis between the image side of the first spacer P1 and the object side of the second spacer P2 EP12, the distance on the optical axis between the image side of the second spacer P2 and the object side of the third spacer P3 EP23, and the distance on the optical axis between the image side of the third spacer P3 and the object side of the fourth spacer P4 EP34.

[0133] Table 10

[0134] Parameter dls (mm) dlm (mm) Dls (mm) Dlm (mm) d2s (mm) d2m (mm) D2s (mm) D2m (mm) Value 2.265 2.310 4.500 4.500 2.122 2.122 4.700 4.700 Parameter d3s (mm) d3m (mm) d4s (mm) d4m (mm) D4s (mm) d5s (mm) d5m (mm) D5s (mm) Value 2.635 2.613 3.697 4.347 5.108 5.415 6.305 7.284 Parameter D5m (mm) d6s (mm) d6m (mm) D6m (mm) D6s (mm) dOm (mm) D0m (mm) D0s (mm) Value 6.493 7.480 7.741 8.109 8.248 9.514 10.119 5.044 Parameter CP1 (mm) EP12 (mm) CP2 (mm) EP23 (mm) EP34 (mm) CP4 (mm) CP5 (mm) Value 0.024 0.448 0.020 0.265 0.381 0.200 0.228

[0135] In conclusion, Figure 11 The on-axis chromatic aberration curves of the optical lenses of Embodiments 2-1, 2-2, or 2-3 are shown, which represent the deviation of the convergence focal point of light of different wavelengths after passing through the optical system. Figure 12 The astigmatism curves of the optical lenses of Embodiment 2-1, Embodiment 2-2, or Embodiment 2-3 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 13 The distortion curves of the optical lenses of Embodiments 2-1, 2-2, or 2-3 are shown, representing the distortion values ​​corresponding to different image heights. Therefore, in conjunction with... Figures 11 to 13 It can be seen that the optical lenses provided in Examples 2-1 to 2-3 have good imaging quality.

[0136] Example 3-1

[0137] The following is for reference Figure 14 An optical lens according to Embodiment 3-1 of this application is described. Figure 14 A schematic diagram of the structure of an optical lens according to Embodiment 3-1 of this application is shown.

[0138] like Figure 14As shown, in this embodiment of the application, the optical lens includes a lens barrel and 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 disposed within the lens barrel and arranged sequentially from the object side to the image side along the optical axis. The first lens E1 to the sixth lens E6 are all aspherical lenses. The object side S1 of the first lens E1 is convex, and the image side S2 of the first lens E1 is concave. The object side S3 of the second lens E2 is convex, and the image side S4 of the second lens E2 is concave. The object side S5 of the third lens E3 is convex, and the image side S6 of the third lens E3 is concave. The object side S7 of the fourth lens E4 is convex, and the image side S8 of the fourth lens E4 is concave. The object side S9 and the image side S10 of the fifth lens E5 are both convex. The object side S11 and the image side S12 of the sixth lens E6 are both concave. Specifically, a first spacer P1 is provided between the first lens E1 and the second lens E2, a second spacer P2 is provided between the second lens E2 and the third lens E3, a third spacer P3 is provided between the third lens E3 and the fourth lens E4, a fourth spacer P4 is provided between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 is provided between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 is provided on the image side of the sixth lens E6, with the edge of the image side of the sixth lens E6 contacting the object side of the sixth spacer P6.

[0139] Furthermore, an aperture stop STO is provided between the object plane OBJ and the first lens E1. The placement of the aperture stop STO is beneficial for effectively converging the light entering the optical lens, and for reducing the lens aperture. Furthermore, the aperture stop STO can be positioned close to the object side of the first lens E1.

[0140] In addition, the optical lens also includes a protective glass located between the sixth lens E6 and the imaging plane. The object side of the protective glass faces the image side of the sixth lens E6, and the image side of the protective glass faces the imaging plane. The protective glass is used to protect the image sensor chip located at the imaging plane. In some embodiments, the optical lens also includes a filter located between the sixth lens E6 and the imaging plane. The filter is used to correct color deviation.

[0141] Table 11 below shows the surface type, radius of curvature, thickness / distance, material, and conic coefficient of each lens in the optical lens of Embodiment 3-1. Those skilled in the art will understand that the “thickness / distance” in the same row as surface number S1 refers to the center thickness of the first lens E1, the “thickness / distance” in the same row as surface number S2 refers to the air gap between the first lens E1 and the second lens E2, the “thickness / distance” in the same row as surface number S3 refers to the center thickness of the second lens E2, and so on.

[0142] Table 11

[0143]

[0144]

[0145] Table 12 below shows the higher-order term coefficients A4, A6, A8, A10, A12, A14, A16, A18 and A20 that can be used for surface numbers S1 to S12 in Example 3-1.

[0146] Table 12

[0147] Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.4221E-03 2.9255E-03 -1.0121E-02 1.0830E-02 -1.1897E-02 9.9132E-03 -6.1806E-03 2.0669E-03 -2.9010E-04 S2 -5.8069E-02 -2.3203E-02 1.7514E-01 -4.3484E-01 6.4705E-01 -6.1874E-01 3.6470E-01 -1.1934E-01 1.6293E-02 S3 -4.8127E-02 -9.3513E-04 2.8418E-01 -7.4058E-01 1.1343E+00 -1.1136E+00 6.8677E-01 -2.3959E-01 3.5806E-02 S4 -9.2545E-03 5.6028E-02 -6.7975E-02 3.5164E-01 -9.4609E-01 1.3582E+00 -1.0685E+00 4.3285E-01 -6.7278E-02 S5 -3.3671E-02 -1.8175E-01 6.0573E-01 -1.5613E+00 2.5853E+00 -2.8044E+00 1.9324E+00 -7.7515E-01 1.4142E-01 S6 -3.8823E-02 -2.0519E-01 7.5516E-01 -1.8014E+00 2.6481E+00 -2.5031E+00 1.4817E+00 -4.9572E-01 7.1516E-02 S7 -1.8004E-01 9.9385E-02 2.7221E-02 -8.0990E-02 -3.8113E-02 1.4048E-01 -9.9497E-02 2.9104E-02 -3.1161E-03 S8 -2.2936E-01 1.4836E-01 -6.1315E-02 -6.7125E-03 2.6989E-02 -1.2067E-02 1.0064E-03 4.7701E-04 -8.7818E-05 S9 8.7634E-03 -1.1232E-01 1.4419E-01 -1.2925E-01 7.4581E-02 -2.7200E-02 5.9797E-03 -7.1635E-04 3.5760E-05 S10 -4.6837E-02 4.2787E-02 -4.2571E-02 2.6507E-02 -1.1457E-02 3.3556E-03 -6.1162E-04 6.1273E-05 -2.5528E-06 S11 -1.7617E-01 7.9549E-02 -2.2785E-02 4.6397E-03 -6.4625E-04 5.8743E-05 -3.2958E-06 1.0288E-07 -1.3590E-09 S12 -6.3028E-02 2.2718E-02 -6.2314E-03 1.2456E-03 -1.8215E-04 1.8242E-05 -1.1632E-06 4.1939E-08 -6.4228E-10

[0148] Table 13 below shows the image-side inner diameters d1m to d6m of the first spacer P1 to the sixth spacer P6, the object-side inner diameters d1s to d6s of the first spacer P1 to the sixth spacer P6, the object-side outer diameters D1s and D2s of the first spacer P1 and the second spacer P2, the object-side outer diameters D4s to D6s of the fourth spacer P4 to the sixth spacer P6, the image-side outer diameters D1m and D2m of the first spacer P1 and the second spacer P2, the image-side outer diameters D5m and D6m of the fifth spacer P5 and the sixth spacer P6, and the lens barrel facing the image side in the optical lens of Embodiment 3-1. The inner diameter of the end face d0m, the outer diameter of the end face facing the image side of the lens barrel D0m, the outer diameter of the end face facing the object side of the lens barrel D0s, the maximum thicknesses of the first spacer P1 and the second spacer P2 CP1 and CP2, the maximum thicknesses of the fourth spacer P4 and the fifth spacer P5 CP4 and CP5, the distance on the optical axis between the image side of the first spacer P1 and the object side of the second spacer P2 EP12, the distance on the optical axis between the image side of the second spacer P2 and the object side of the third spacer P3 EP23, and the distance on the optical axis between the image side of the third spacer P3 and the object side of the fourth spacer P4 EP34.

[0149] Table 13

[0150]

[0151]

[0152] Example 3-2

[0153] The following is for reference Figure 15 An optical lens according to Embodiment 3-2 of this application is described. For the sake of brevity, descriptions similar to those in Embodiment 3-1 will be omitted in this embodiment. Figure 15 A schematic diagram of the structure of an optical lens according to Embodiment 3-2 of this application is shown.

[0154] like Figure 15As shown, the optical lens includes a lens barrel and 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 arranged sequentially from the object side to the image side along the optical axis within the lens barrel. All six lenses, from the first lens E1 to the sixth lens E6, are aspherical lenses. The object side S1 of the first lens E1 is convex, and the image side S2 of the first lens E1 is concave. The object side S3 of the second lens E2 is convex, and the image side S4 of the second lens E2 is concave. The object side S5 of the third lens E3 is convex, and the image side S6 of the third lens E3 is concave. The object side S7 of the fourth lens E4 is convex, and the image side S8 of the fourth lens E4 is concave. The object side S9 and the image side S10 of the fifth lens E5 are both convex. The object side S11 and the image side S12 of the sixth lens E6 are both concave. Specifically, a first spacer P1 is provided between the first lens E1 and the second lens E2, a second spacer P2 is provided between the second lens E2 and the third lens E3, a third spacer P3 is provided between the third lens E3 and the fourth lens E4, a fourth spacer P4 is provided between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 is provided between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 is provided on the image side of the sixth lens E6, with the edge of the image side of the sixth lens E6 contacting the object side of the sixth spacer P6.

[0155] Furthermore, an aperture stop STO is provided between the object plane OBJ and the first lens E1. The placement of the aperture stop STO is beneficial for effectively converging the light entering the optical lens, and for reducing the lens aperture. Furthermore, the aperture stop STO can be positioned close to the object side of the first lens E1.

[0156] In addition, the optical lens also includes a protective glass located between the sixth lens E6 and the imaging plane. The object side of the protective glass faces the image side of the sixth lens E6, and the image side of the protective glass faces the imaging plane. The protective glass is used to protect the image sensor chip located at the imaging plane. In some embodiments, the optical lens also includes a filter located between the sixth lens E6 and the imaging plane. The filter is used to correct color deviation.

[0157] In this embodiment, the surface type, radius of curvature, thickness / distance, material, and conic coefficient of each lens in the optical lens can adopt the parameters in Table 11 of Embodiment 3-1. Furthermore, the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of surfaces S1 to S12 in this embodiment can adopt the parameters in Table 12 of Embodiment 3-1.

[0158] Table 14 below shows the image-side inner diameters d1m to d6m of the first spacer P1 to the sixth spacer P6, the object-side inner diameters d1s to d6s of the first spacer P1 to the sixth spacer P6, the object-side outer diameters D1s and D2s of the first spacer P1 and the second spacer P2, the object-side outer diameters D4s to D6s of the fourth spacer P4 to the sixth spacer P6, the image-side outer diameters D1m and D2m of the first spacer P1 and the second spacer P2, the image-side outer diameters D5m and D6m of the fifth spacer P5 and the sixth spacer P6, and the lens barrel facing the image side in the optical lens of Embodiment 3-2. The inner diameter of the end face d0m, the outer diameter of the end face facing the image side of the lens barrel D0m, the outer diameter of the end face facing the object side of the lens barrel D0s, the maximum thicknesses of the first spacer P1 and the second spacer P2 CP1 and CP2, the maximum thicknesses of the fourth spacer P4 and the fifth spacer P5 CP4 and CP5, the distance on the optical axis between the image side of the first spacer P1 and the object side of the second spacer P2 EP12, the distance on the optical axis between the image side of the second spacer P2 and the object side of the third spacer P3 EP23, and the distance on the optical axis between the image side of the third spacer P3 and the object side of the fourth spacer P4 EP34.

[0159] Table 14

[0160] Parameter dls (mm) dlm (mm) Dls (mm) Dlm (mm) d2s (mm) d2m (mm) D2s (mm) D2m (mm) Value 2.319 2.339 4.500 4.500 2.122 2.122 4.700 4.700 Parameter d3s (mm) d3m (mm) d4s (mm) d4m (mm) D4s (mm) d5s (mm) d5m (mm) D5s (mm) Value 2.672 2.646 3.671 3.644 6.125 4.324 5.254 5.945 Parameter D5m (mm) d6s (mm) d6m (mm) D6m (mm) D6s (mm) dOm (mm) D0m (mm) D0s (mm) Value 7.765 7.546 7.720 8.118 8.271 9.389 9.974 4.707 Parameter CP1 (mm) EP12 (mm) CP2 (mm) EP23 (mm) EP34 (mm) CP4 (mm) CP5 (mm) Value 0.024 0.448 0.020 0.289 0.394 0.022 0.367

[0161] Example 3-3

[0162] The following is for reference Figure 16 An optical lens according to Embodiment 3-3 of this application is described. For the sake of brevity, descriptions similar to those in Embodiment 3-1 will be omitted in this embodiment. Figure 16 A schematic diagram of the structure of an optical lens according to Embodiments 3-3 of this application is shown.

[0163] like Figure 16As shown, in this embodiment of the application, the optical lens includes a lens barrel and 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 disposed within the lens barrel and arranged sequentially from the object side to the image side along the optical axis. The first lens E1 to the sixth lens E6 are all aspherical lenses. The object side S1 of the first lens E1 is convex, and the image side S2 of the first lens E1 is concave. The object side S3 of the second lens E2 is convex, and the image side S4 of the second lens E2 is concave. The object side S5 of the third lens E3 is convex, and the image side S6 of the third lens E3 is concave. The object side S7 of the fourth lens E4 is convex, and the image side S8 of the fourth lens E4 is concave. The object side S9 and the image side S10 of the fifth lens E5 are both convex. The object side S11 and the image side S12 of the sixth lens E6 are both concave. Specifically, a first spacer P1 is provided between the first lens E1 and the second lens E2, a second spacer P2 is provided between the second lens E2 and the third lens E3, a third spacer P3 is provided between the third lens E3 and the fourth lens E4, a fourth spacer P4 is provided between the fourth lens E4 and the fifth lens E5, a fifth spacer P5 is provided between the fifth lens E5 and the sixth lens E6, and a sixth spacer P6 is provided on the image side of the sixth lens E6, with the edge of the image side of the sixth lens E6 contacting the object side of the sixth spacer P6.

[0164] Furthermore, an aperture stop STO is provided between the object plane OBJ and the first lens E1. The placement of the aperture stop STO is beneficial for effectively converging the light entering the optical lens, and for reducing the lens aperture. Furthermore, the aperture stop STO can be positioned close to the object side of the first lens E1.

[0165] In addition, the optical lens also includes a protective glass located between the sixth lens E6 and the imaging plane. The object side of the protective glass faces the image side of the sixth lens E6, and the image side of the protective glass faces the imaging plane. The protective glass is used to protect the image sensor chip located at the imaging plane. In some embodiments, the optical lens also includes a filter located between the sixth lens E6 and the imaging plane. The filter is used to correct color deviation.

[0166] In this embodiment, the surface type, radius of curvature, thickness / distance, material, and conic coefficient of each lens in the optical lens can adopt the parameters in Table 11 of Embodiment 3-1. Furthermore, the higher-order coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 of surfaces S1 to S12 in this embodiment can adopt the parameters in Table 12 of Embodiment 3-1.

[0167] Table 15 below shows the image-side inner diameters d1m to d6m of the first spacer P1 to the sixth spacer P6, the object-side inner diameters d1s to d6s of the first spacer P1 to the sixth spacer P6, the object-side outer diameters D1s and D2s of the first spacer P1 and the second spacer P2, the object-side outer diameters D4s to D6s of the fourth spacer P4 to the sixth spacer P5, the image-side outer diameters D1m and D2m of the first spacer P1 and the second spacer P2, the image-side outer diameters D5m and D6m of the fifth spacer P5 and the sixth spacer P6, and the lens barrel facing the image side in the optical lens of Embodiments 3-3. The inner diameter of the end face d0m, the outer diameter of the end face facing the image side of the lens barrel D0m, the outer diameter of the end face facing the object side of the lens barrel D0s, the maximum thicknesses of the first spacer P1 and the second spacer P2 CP1 and CP2, the maximum thicknesses of the fourth spacer P4 and the fifth spacer P5 CP4 and CP5, the distance on the optical axis between the image side of the first spacer P1 and the object side of the second spacer P2 EP12, the distance on the optical axis between the image side of the second spacer P2 and the object side of the third spacer P3 EP23, and the distance on the optical axis between the image side of the third spacer P3 and the object side of the fourth spacer P4 EP34.

[0168] Table 15

[0169]

[0170]

[0171] In conclusion, Figure 17 The on-axis chromatic aberration curves of the optical lenses of Embodiments 3-1, 3-2, or 3-3 are shown, which represent the deviation of the convergence focal point of light of different wavelengths after passing through the optical system. Figure 18 The astigmatism curves of the optical lenses of Embodiments 3-1, 3-2, or 3-3 are shown, which represent the meridional image plane curvature and the sagittal image plane curvature. Figure 19 The distortion curves of the optical lenses of Embodiments 3-1, 3-2, or 3-3 are shown, representing the distortion values ​​corresponding to different image heights. Therefore, in conjunction with... Figures 17 to 19 It can be seen that the optical lenses provided in Examples 3-1 to 3-3 have good imaging quality.

[0172] In summary, Examples 1-1 to 3-3 satisfy the relationships shown in Tables 16 and 17 below, respectively.

[0173] Table 16 shows the effective focal lengths f1 to f6 of the first lens E1 to the sixth lens E6 in the optical lens, the total effective focal length f of the optical lens, the total optical length TTL of the optical lens (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S15), and half the diagonal length ImgH of the effective pixel area on the imaging surface S15.

[0174] Table 16

[0175] Example parameter Examples 1-1 to 1-3 Examples 2-1 to 2-3 Examples 3-1 to 3-3 f1 (mm) 4.17 4.16 4.16 f2 (mm) -11.76 -12.40 -15.08 f3 (mm) 138.17 76.61 -474.35 f4 (mm) -27.06 -15.61 -10.47 f5 (mm) 5.30 5.18 4.25 f6 (mm) -3.42 -3.46 -3.39 f (mm) 4.65 4.65 4.65 TTL (mm) 5.40 5.40 5.40 ImgH (mm) 4.33 4.16 4.20

[0176] Table 17

[0177]

[0178] It should be noted that the lens group, lens barrel and spacer in the various embodiments of this application can be arbitrarily combined. That is to say, it is not limited to the lens group in a certain embodiment being combined only with the lens barrel and spacer in that embodiment.

[0179] In addition, this application also provides an electronic device, which includes an imaging element and the optical lens in the above embodiments; wherein the imaging element is used to convert the optical image formed by the optical lens into an electrical signal.

[0180] In some embodiments, the electronic device may be a stand-alone electronic device, such as a range detector, or an imaging module integrated into a range detector. Furthermore, the electronic device may be a stand-alone imaging device, such as an in-vehicle camera, or an imaging module integrated into a driver assistance system.

[0181] In some embodiments, the imaging element may be, but is not limited to, a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).

[0182] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An optical lens, characterized in that, include: Lens tube; A lens group is disposed inside the lens barrel, and the lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged sequentially along the optical axis from the object side to the image side; as well as Multiple spacers are located inside the lens barrel; the multiple spacers include a first spacer disposed between the first lens and the second lens and a sixth spacer abutting against the image side of the sixth lens; Wherein, the maximum height L of the lens barrel along the optical axis is less than 5 mm; and The effective focal length f1 of the first lens, the center thickness CT6 of the sixth lens on the optical axis, the inner diameter d1m of the image-side surface of the first spacer, the maximum thickness CP1 of the first spacer, and the outer diameter D6m of the image-side surface of the sixth spacer satisfy the following conditions: 25.83≤(D6m+d1m+f1) / (CP1+CT6)≤31.66; The first lens has positive optical power, and its object side is convex and its image side is concave. The second lens has negative optical power, with its object side being convex and its image side being concave. The third lens has positive or negative optical power, and its object side is convex while its image side is concave. The fourth lens has negative optical power and its image-side surface is concave. The fifth lens has positive optical power, and its object side is convex, as is its image side; The sixth lens has negative optical power, and its object side is concave, as is its image side; The optical lens has six lenses with optical power.

2. The optical lens according to claim 1, wherein, At least three spacers are provided between the first lens and the fourth lens, and at least three spacers are provided between the third lens and the sixth lens; The spacer is provided between the second lens and the third lens, between the third lens and the fourth lens, between the fourth lens and the fifth lens, and / or between the fifth lens and the sixth lens.

3. The optical lens according to claim 2, wherein, The spacer located between the second lens and the third lens is the second spacer, and the spacer located between the fifth lens and the sixth lens is the fifth spacer; The outer diameter D0m of the end face of the lens barrel facing the image side, the center thickness CT1 of the first lens on the optical axis, the effective focal length f2 of the second lens, the effective focal length f6 of the sixth lens, the distance EP12 between the image side surface of the first spacer and the object side surface of the second spacer on the optical axis, and the maximum thickness CP5 of the fifth spacer satisfy the following conditions: 23.76≤(f2 f6 CT1) / (D0m EP12 CP5)≤45.

18.

4. The optical lens according to claim 2, wherein, The spacer located between the second lens and the third lens is the second spacer, and the spacer located between the fifth lens and the sixth lens is the fifth spacer; The following conditions must be met: the radius of curvature R1 of the object-side surface of the first lens, the radius of curvature R2 of the image-side surface of the first lens, the center thickness CT2 of the second lens on the optical axis, the maximum thickness CP2 of the second spacer, the inner diameter d2s of the object-side surface of the second spacer, and the inner diameter d5s of the object-side surface of the fifth spacer. 16.43≤(d5s / CP2) / (R2 / R1+d2s / CT2)≤20.

25.

5. The optical lens according to claim 2, wherein, The spacer located between the fifth lens and the sixth lens among the plurality of spacers is the fifth spacer; Wherein, the air gap T23 between the second lens and the third lens on the optical axis, the effective focal length f5 of the fifth lens, the radius of curvature R9 of the object-side surface of the fifth lens, the inner diameter d1s of the object-side surface of the first spacer, the outer diameter D1s of the object-side surface of the first spacer, and the inner diameter d5m of the image-side surface of the fifth spacer satisfy the following conditions: 12.56 ≤ (f5 d1s+D1s R9) / (d5m T23)≤16.23。 6. The optical lens according to claim 2, wherein, Of the plurality of spacers, the spacer located between the second lens and the third lens is the second spacer, and the spacer located between the third lens and the fourth lens is the third spacer; The inner diameter d0m of the end face of the lens barrel facing the image side, the air gap T12 between the first lens and the second lens on the optical axis, the air gap T34 between the third lens and the fourth lens on the optical axis, the outer diameter D1m of the image side of the first spacer, and the distance EP23 between the image side of the second spacer and the object side of the third spacer on the optical axis satisfy the following conditions: 23.42≤(D1m+d0m) / (T12+T34+EP23)≤26.

20.

7. The optical lens according to claim 2, wherein, The spacer located between the third lens and the fourth lens is the third spacer, and the spacer located between the fourth lens and the fifth lens is the fourth spacer; The radius of curvature R3 of the object-side surface of the second lens, the radius of curvature R4 of the image-side surface of the second lens, the inner diameter d3s of the object-side surface of the third spacer, and the outer diameter D4s of the object-side surface of the fourth spacer satisfy the following conditions: 5.89≤(R3 R4) / (d3s D4s)≤7.83。 8. The optical lens according to claim 2, wherein, The spacer located between the third lens and the fourth lens is the third spacer, and the spacer located between the fifth lens and the sixth lens is the fifth spacer; The radius of curvature R11 of the object-side surface of the sixth lens, the radius of curvature R12 of the image-side surface of the sixth lens, the air gap T56 between the fifth and sixth lenses on the optical axis, the inner diameter d3m of the image-side surface of the third spacer, and the outer diameter D5s of the object-side surface of the fifth spacer satisfy the following conditions: 0.75≤T56 (R12-R11) / (d3m D5s)≤3.62。 9. The optical lens according to claim 2, wherein, Of the plurality of spacers, the spacer located between the second lens and the third lens is the second spacer, the spacer located between the third lens and the fourth lens is the third spacer, the spacer located between the fourth lens and the fifth lens is the fourth spacer, and the spacer located between the fifth lens and the sixth lens is the fifth spacer; The effective focal length of the fourth lens is f4, the radius of curvature of the image-side surface of the fourth lens is R8, the inner diameter of the image-side surface of the second spacer is d2m, the distance EP34 between the image-side surface of the third spacer and the object-side surface of the fourth spacer on the optical axis, the inner diameter of the image-side surface of the fourth spacer is d4m, and the outer diameter of the image-side surface of the fifth spacer is D5m, all satisfying the following conditions: 28.78≤(D5m / EP34-f4 / R8) / (d2m / d4m)≤50.

02.

10. The optical lens according to claim 2, wherein, The spacer located between the second lens and the third lens is the second spacer, and the spacer located between the fourth lens and the fifth lens is the fourth spacer; The following conditions must be met by the following conditions: the center thickness CT5 of the fifth lens on the optical axis; the air gap T56 between the fifth and sixth lenses on the optical axis; the outer diameter D2s of the object side of the second spacer; the inner diameter d4s of the object side of the fourth spacer; the maximum thickness CP4 of the fourth spacer; and the inner diameter d6s of the object side of the sixth spacer. 5.71≤(D2s d4s CT5) / (d6s CP4 T56)≤52.27。 11. The optical lens according to claim 2, wherein, The spacer located between the second lens and the third lens among the plurality of spacers is the second spacer; The total effective focal length f of the optical lens, the outer diameter D0s of the end face of the lens barrel facing the object side, the center thickness CT3 of the third lens on the optical axis, the outer diameter D2m of the image side of the second spacer, the inner diameter d6m of the image side of the sixth spacer, and the outer diameter D6s of the object side of the sixth spacer satisfy the following conditions: 55.57≤(d6m D6s+D2m f) / (CT3 D0s)≤69.67。 12. An electronic device, characterized in that, include: The optical lens as described in any one of claims 1 to 11; as well as An imaging element for converting the optical image formed by the optical lens into an electrical signal.

Images