Telephoto lens, shooting device and movable platform

Abstract

The embodiment of the utility model provides a telephoto lens, a shooting device and a movable platform, the telephoto lens comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from an object side to an image side along an optical axis, and the telephoto lens satisfies the following three expressions: 4.1 lt; omega < lt >; 9.0, 1.9 lt, 9.0, 1.9 lt; f / Diamlt; 3.4, 60 lt, 3.4, 60 lt; vdF and omega are the maximum angle of the incident light of the first lens, f is the overall focal length of the telephoto lens, Diam is the larger outer diameter of the first lens and the second lens, and vdF is the larger Abbe number of the first two lenses with positive focal power close to the object side. According to the telephoto lens provided by the embodiment of the utility model, the size miniaturization of the telephoto lens can be realized, especially the length size of the lens along the optical axis direction can be reduced, and the imaging quality of the telephoto lens can be improved.

Description

Technical Field

[0001] This utility model relates to the field of photography and videography technology, and in particular to a telephoto lens, a shooting device, and a movable platform. Background Technology

[0002] Telephoto lenses, with their unique telephoto capabilities and spatial compression, have wide applications in photography and videography.

[0003] Common telephoto lenses are usually large and bulky, making them inconvenient to carry and use. Some telephoto lenses, although slightly smaller in size, sacrifice image quality.

[0004] Therefore, existing telephoto lenses struggle to achieve both compact design and excellent image quality. Utility Model Content

[0005] In view of this, in order to solve the problem that existing telephoto lenses are difficult to balance miniaturization and excellent image quality, this utility model provides a telephoto lens, a shooting device and a movable platform.

[0006] In a first aspect, this utility model embodiment provides a telephoto lens, comprising a first lens, a second lens, a third lens, and a fourth lens arranged sequentially along the optical axis from the object side to the image side. The telephoto lens satisfies the following three expressions: 4.1 < ω < 9.0, 1.9 <f / Dia_m<3.4,60<υd_F;

[0007] Where ω is the maximum angle of the incident light from the first lens, f is the overall focal length of the telephoto lens, Dia_m is the larger outer diameter of the first lens and the second lens, and υd_F is the larger Abbe number among the first two lenses with positive optical power closest to the object side.

[0008] Secondly, this utility model embodiment provides a telephoto lens, comprising a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged sequentially along the optical axis from the object side to the image side, wherein the optical powers of the first lens, second lens, third lens, fourth lens, and fifth lens are positive, positive, negative, positive, and negative, respectively, and at least one lens is an aspherical lens; the telephoto lens satisfies the following five expressions: 4.1 < ω < 9.0, 1.9 <f / Dia_m<3.4,60<υd_F,0.70<TTL / f<1.05,3<f×tanω<7;

[0009] Where ω is the maximum angle of the incident light from the first lens, f is the overall focal length of the telephoto lens, Dia_m is the larger outer diameter of the first lens and the second lens, υd_F is the larger Abbe number of the first lens and the second lens, and TTL is the distance on the optical axis from the object-side surface of the first lens to the imaging plane when focusing on an object at infinity.

[0010] Thirdly, the present invention provides a shooting device, which includes the telephoto lens described in the first or second aspect of the present invention.

[0011] Fourthly, the present invention provides a movable platform, which includes the telephoto lens described in the first or second aspect of the present invention, or the shooting device described in the third aspect of the present invention.

[0012] The telephoto lens described in this embodiment of the invention has at least the following advantages:

[0013] In this embodiment of the invention, a telephoto lens is provided. On the one hand, by reducing the number of lenses, and on the other hand, by controlling at least some optical structure parameters, the size of the telephoto lens can be miniaturized, especially by reducing the length of the lens along the optical axis, and the image quality of the telephoto lens can also be improved.

[0014] In addition, when the number of lenses is five, it is also possible to reduce the size of telephoto lenses by controlling at least some of the optical structure parameters, especially by reducing the length of the lens along the optical axis, and also by improving the image quality of telephoto lenses.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A simplified optical structure diagram of a first telephoto lens according to an embodiment of the present invention is shown;

[0018] Figure 2 An embodiment of the present invention is shown. Figure 1 Axial aberration diagram of a telephoto lens;

[0019] Figure 3 A simplified optical structure diagram of a second telephoto lens according to an embodiment of the present invention is shown;

[0020] Figure 4 An embodiment of the present invention is shown. Figure 3 Axial aberration diagram of a telephoto lens;

[0021] Figure 5 A simplified optical structure diagram of a third telephoto lens according to an embodiment of the present invention is shown;

[0022] Figure 6 An embodiment of the present invention is shown. Figure 5 Axial aberration diagram of a telephoto lens;

[0023] Figure 7 A simplified optical structure diagram of a fourth telephoto lens according to an embodiment of the present invention is shown;

[0024] Figure 8 An embodiment of the present invention is shown. Figure 7 Axial aberration diagram of a telephoto lens;

[0025] Figure 9 A simplified optical structure diagram of a fifth telephoto lens according to an embodiment of the present invention is shown;

[0026] Figure 10 An embodiment of the present invention is shown. Figure 9 Axial aberration diagram of a telephoto lens;

[0027] Figure 11 A simplified optical structure diagram of a sixth telephoto lens according to an embodiment of the present invention is shown;

[0028] Figure 12 An embodiment of the present invention is shown. Figure 11 Axial aberration diagram of a telephoto lens;

[0029] Figure 13 A simplified optical structure diagram of a seventh telephoto lens according to an embodiment of the present invention is shown;

[0030] Figure 14 An embodiment of the present invention is shown. Figure 13 Axial aberration diagram of a telephoto lens;

[0031] Figure 15 A simplified optical structure diagram of an eighth telephoto lens according to an embodiment of the present invention is shown;

[0032] Figure 16 An embodiment of the present invention is shown. Figure 15 Axial aberration diagram of a telephoto lens;

[0033] Figure 17 A simplified optical structure diagram of a ninth telephoto lens according to an embodiment of the present invention is shown;

[0034] Figure 18 An embodiment of the present invention is shown. Figure 17 Axial aberration diagram of a telephoto lens;

[0035] Figure 19 A simplified optical structure diagram of the tenth telephoto lens according to an embodiment of the present invention is shown;

[0036] Figure 20 An embodiment of the present invention is shown. Figure 19 Axial aberration diagram of a telephoto lens;

[0037] Figure 21 A simplified optical structure diagram of the eleventh telephoto lens according to an embodiment of the present invention is shown;

[0038] Figure 22 An embodiment of the present invention is shown. Figure 21 Axial aberration diagram of a telephoto lens;

[0039] Figure 23 A schematic diagram of a shooting device according to an embodiment of the present invention is shown;

[0040] Figure 24 A schematic diagram of a drone according to an embodiment of the present invention is shown. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0042] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0043] Reference Figure 1 , Figure 3 and Figure 5 Any one of the schematic diagrams shows a schematic optical structure of a telephoto lens 10 according to an embodiment of the present invention. As Figure 1 、 Figure 3 or Figure 5 shown, the telephoto lens 10 according to an embodiment of the present invention includes a first lens 101, a second lens 102, a third lens 103, and a fourth lens 104 arranged in sequence from the object side to the image side along the optical axis. Compared with a telephoto lens composed of five common lenses, the embodiment of the present invention can reduce the number of lenses to four, thereby helping to reduce the length dimension of the telephoto lens. In addition, the telephoto lens satisfies the following three expressions: 4.1 < ω < 9.0, 1.9 < f / Dia_m < 3.4, 60 < υd_F.

[0044] 4.1 < ω < 9.0 is Expression (1), where ω is the maximum angle of the incident light of the first lens, and can also be defined as the maximum range captured when installing an image sensor. When ω does not exceed 4.1, the viewing angle will become too narrow, especially when the imaging device moves, it is difficult to track the subject. When ω is not less than 9.0, the viewing angle will become too wide, and it is difficult to distinguish the subject when shooting a distant view.

[0045] 1.9 < f / Dia_m < 3.4 is Expression (2), where f is the overall focal length of the telephoto lens, and Dia_m is the larger outer diameter of the first lens and the second lens. When f / Dia_m does not exceed 1.9, the lens diameter will become larger, which is not conducive to miniaturizing the telephoto lens. When f / Dia_m is not less than 3.4, it will affect the light input of the lens, the picture will become darker, and the shutter speed will become slower when shooting in low-light scenes such as at night, easily resulting in a blurred captured image.

[0046] 60 < υd_F is Expression (3), where υd_F is the larger Abbe number among the first two positive refractive power lenses close to the object side. When υd_F does not exceed 60, the axial chromatic aberration of the telephoto lens will be more prominent.

[0047] Figure 1 、 Figure 3 and Figure 5 differ in the structural parameters of each lens, thereby forming different design schemes of the telephoto lens. Figure 2 、 Figure 4 and Figure 6 are respectively Figure 1 、 Figure 3 and Figure 5The axial aberration diagram of the corresponding telephoto lens in the infinite focus state. Each axial aberration diagram shows spherical aberration SA (mm), astigmatism AST (mm), and distortion DIS (%) from left to right in sequence. In the spherical aberration diagram, the vertical axis represents the F-number (denoted as F in the figure), the solid line represents the d-line, the dotted line represents the F-line, and the dashed line represents the characteristics of the C-line. In the astigmatism diagram, the vertical axis represents the image height (denoted as H in the figure), the solid line represents the sagittal plane of the d-line (denoted as s in the figure), and the dashed line represents the characteristics of the meridional plane (denoted as m in the figure). In the distortion diagram, the vertical axis represents the image height (denoted as H in the figure).

[0048] Therefore, when designing the telephoto lens of the embodiment of the present invention, on the one hand, by reducing the number of lenses, and on the other hand, at least by controlling the above-mentioned optical structure parameters, it helps to miniaturize the size of the telephoto lens. In particular, it is beneficial to reduce the length dimension of the lens along the optical axis direction, and can also improve the imaging quality of the telephoto lens.

[0049] Optionally, in some embodiments, the telephoto lens also satisfies the following expression: 0.70 < TTL / f < 1.05.

[0050] 0.70 < TTL / f < 1.05 is Expression (4). TTL is the total optical length of the lens, which refers to the distance from the surface near the object side in the lens to the image plane. When TTL / f does not exceed 0.70, the overall length of the lens will become shorter, but problems such as field curvature and axial chromatic aberration will be significantly increased, resulting in a significant decline in optical performance. When TTL / f is not less than 1.05, although the optical performance will be improved, the overall length of the lens will be significantly increased, which is not suitable for installation in small shooting devices.

[0051] In addition, in some embodiments, in order to better balance the relatively small total optical length of the lens and excellent optical performance, TTL / f can further satisfy Expression (4a): 0.70 < TTL / f < 0.95.

[0052] Optionally, in some embodiments, the telephoto lens also satisfies Expression (5): 3 < f×tanω < 7.

[0053] The size of the telephoto lens optical system is significantly affected by the size of the sensor used. In recent years, the pixel pitch of the sensor has become smaller, and even small sensors can have more than 10 million pixels and can perform high-sensitivity shooting. Therefore, optical design according to an appropriate sensor has become a necessary condition for achieving the combination of miniaturization, large aperture, and high performance.

[0054] When f×tanω does not exceed 3, the imaging circle will become smaller. Although it can adapt to small-sized sensors, due to the small pixel size, the diffraction effect will become larger, making it difficult to ensure the resolution of high-frequency components. When f×tanω is not less than 7, the imaging circle will become larger. Although it can adapt to high-performance sensors with larger sizes, the overall size of the optical system will become too large, making it difficult to miniaturize the telephoto lens.

[0055] In addition, in some embodiments, in order to make the size of the imaging circle of the telephoto lens more reasonable to meet the adaptation to a sensor with a suitable size and ensure the imaging resolution, f×tanω can further satisfy the expression (5a): 3.5 < f×tanω < 6.9.

[0056] Optionally, in some embodiments, the telephoto lens also satisfies the following expression (6): 0.35 < f1 / f < 1.1. Where f1 is the focal length of the first lens 101. For a large-aperture telephoto lens, when light enters from the object side, the light usually enters the edge area of the lens of the object-side lens, so it has a great impact on spherical aberration. When f1 / f does not exceed 0.35, although the generated spherical aberration will decrease, the length dimension of the lens will become larger, which is not conducive to miniaturization. When f1 / f is not less than 1.1, although miniaturization can be achieved, the refractive power of the lens will become too strong, resulting in more prominent spherical aberration.

[0057] In addition, in some embodiments, in order to balance the smaller length dimension of the telephoto lens and weaker spherical aberration, f1 / f can further satisfy the expression (6a): 0.38 < f1 / f < 0.95.

[0058] Optionally, in some embodiments, the optical powers of the first lens 101, the second lens 102, the third lens 103, and the fourth lens 104 are positive, negative, negative, positive, or positive, negative, positive, positive in sequence.

[0059] As Figure 1 , Figure 3 or Figure 5 shown, when the optical powers of the first lens 101, the second lens 102, the third lens 103, and the fourth lens 104 are in the symmetric layout of positive, negative, negative, positive in sequence, it is possible to suppress image distortion and field curvature, while maintaining miniaturization and achieving good imaging effects.

[0060] As Figure 7 shown, when the optical powers of the first lens 101, the second lens 102, the third lens 103, and the fourth lens 104 are in the layout of positive, negative, positive, positive in sequence, by designing the two lenses close to the image plane as positive lenses, the angle of light incident on the sensor surface can be made closer to parallel, thereby being able to suppress light loss and improve the picture quality. Figure 8It also shows Figure 7 The corresponding axial aberration diagram of the telephoto lens at infinity focus.

[0061] Optionally, in some embodiments, the telephoto lens of this utility model further includes a fifth lens 105, which is disposed between the fourth lens 104 and the image side. For example... Figure 9 , Figure 11 , Figure 13 , Figure 15 , Figure 17 or Figure 19 As shown, the optical powers of the first lens 101, the second lens 102, and the third lens 103 are positive, positive, and negative, respectively. Figure 21 As shown, the optical powers of the first lens 101, the second lens 102, and the third lens 103 are positive, negative, and negative, respectively. Figure 9 , Figure 11 , Figure 13 , Figure 15 , Figure 17 and Figure 19 The difference lies in the different structural parameters of each lens, which leads to different telephoto lens design schemes. Figure 10 , Figure 12 , Figure 14 , Figure 16 , Figure 18 , Figure 20 and Figure 22 They are respectively Figure 9 , Figure 11 , Figure 13 , Figure 15 , Figure 17 , Figure 19 and Figure 21 The corresponding axial aberration diagram of the telephoto lens at infinity focus.

[0062] In this embodiment of the invention, by designing the two lenses closest to the object as positive lenses, the angle of light rays along the optical axis becomes more gentle, thus suppressing spherical aberration even with a large-aperture lens. Additionally, a negative lens can be placed closer to the object, creating a positive-negative-negative arrangement of the first lens 101, second lens 102, and third lens 103. This increases the incident pupil diameter at the edge, making it easier to design a small-sized front lens.

[0063] Optionally, in some embodiments, such as Figure 9 , Figure 11 , Figure 13 , Figure 15 or Figure 17 As shown, the optical powers of the fourth lens 104 and the fifth lens 105 are positive and negative, respectively. Figure 19As shown, the optical power of the fourth lens 104 and the fifth lens 105 is negative and positive, respectively.

[0064] In this embodiment of the invention, by designing the fifth lens 105 near the image side as a negative lens, a longer back focal distance can be ensured. Therefore, during use, the telephoto lens can be placed at a position far from the sensor surface, thereby suppressing ghosting. Alternatively, by designing the fifth lens 105 near the image side as a positive lens, the angle at which the main ray enters the sensor can be made more gentle, improving image quality.

[0065] Optionally, in some embodiments, such as Figure 19 As shown, the optical powers of the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 105 are positive, positive, negative, positive, and negative, respectively. For a telephoto lens with five lenses, the arrangement of positive, positive, negative, positive, and negative from the object side to the image side can make the angle of light rays on the optical axis more gradual, thus suppressing spherical aberration even with a large aperture lens. It can also make the angle of the principal ray incident on the sensor more gradual, improving image quality.

[0066] Optionally, in some embodiments, at least one of the first lens 101, the second lens 102, and the third lens 103 is an aspherical lens. An aspherical lens is a lens whose surface shape is determined by multiple high-order equations, resulting in lenses with radii that are all different at each point on the surface. When at least one of the first lens 101, the second lens 102, and the third lens 103 is an aspherical lens, the corresponding lens is lighter and thinner, which is more conducive to miniaturizing telephoto lenses, and aspherical lenses can also maintain excellent image quality.

[0067] Optionally, in some embodiments, the aspherical shape of the aspherical lens described above can be defined by the following formula:

[0068]

[0069] Where Z represents the distance from a point on the aspherical surface with an optical axis height of h to the tangent plane at the vertex of the aspherical surface, h represents the optical axis height, r represents the vertex radius of curvature, k represents the conic constant, and An represents the nth order aspherical coefficient, which can be A4, A6, A8, or A10.

[0070] The present invention does not limit the specific parameters of each symbol in the above formula, and the appropriate aspherical shape parameters can be determined according to the optical condition expressions in each embodiment.

[0071] Optionally, in some embodiments, the first lens 101 has a positive optical power, and the second lens 102 and the third lens 103 form a cemented lens with positive and negative optical powers respectively. The cemented lens satisfies the expression (7): 5 < νda × νdb × (1 / fa + 1 / fb) / (νdb / fa + νda / fb) < 35. Wherein, νda represents the Abbe number of the object-side lens of the cemented lens, νdb represents the Abbe number of the image-side lens of the cemented lens, fa represents the focal length of the object-side lens of the cemented lens, and fb represents the focal length of the image-side lens of the cemented lens.

[0072] The parameters calculated using the above expression are used to measure the dispersion condition of a cemented lens, i.e., the condition for its chromatic aberration correction capability. When the parameter calculated by the above expression does not exceed 5, the dispersion becomes too large, leading to over-correction of chromatic aberration on the short wavelength side, especially causing chromatic aberration halo on the edge rays of short wavelengths. When the parameter calculated by the above expression is not less than 35, the dispersion is too small, resulting in insufficient axial chromatic aberration correction. Meeting the above range allows for dispersion conditions that a single lens cannot achieve, thus correcting chromatic aberration more effectively.

[0073] Furthermore, in some embodiments, in order to improve the chromatic aberration correction capability, the cemented lens can further satisfy the expression (7a): 5.8 < νda × νdb × (1 / fa + 1 / fb) / (νdb / fa + νda / fb) < 28.

[0074] Optionally, in some embodiments, the telephoto lens also satisfies at least one of the following expressions (1a) to (3a).

[0075] In order to make the telephoto lens have a more suitable field of view, based on the aforementioned embodiment expression (1), the telephoto lens can satisfy expression (1a): 6.8 < ω < 8.6.

[0076] To achieve a smaller radial dimension and a larger light intake for the telephoto lens, based on the aforementioned embodiment's expression (2), the telephoto lens can satisfy expression (2a): 2.45 <f / Dia_m<3.0。

[0077] In order to reduce the axial chromatic aberration of the telephoto lens, based on the aforementioned embodiment expression (3), the telephoto lens can satisfy expression (3a): 70 < υd_F < 100.

[0078] Optionally, in some embodiments, the fourth lens 104 or the fifth lens 105 satisfies at least one of expression (8): 50 < νd_n < 60 and expression (9): 18 < νd_p < 30. Here, νd_n is the Abbe number of the lens with negative optical power in the fourth lens 104 and the fifth lens 105, and νd_p is the Abbe number of the lens with positive optical power in the fourth lens 104 and the fifth lens 105.

[0079] For Expression (8), when νd_n does not exceed 50, chromatic aberration of magnification of short wavelength occurs on the lower side of the lens, and when νd_n is not less than 60, chromatic aberration of magnification of short wavelength occurs on the upper side of the lens. In addition, in some embodiments, νd_n may further satisfy Expression (8a): 55 < νd_n < 58 to reduce chromatic aberration of magnification of short wavelength.

[0080] For Expression (9), when νd_p does not exceed 18, the chromatic aberration of magnification generated by each lens becomes large, resulting in overcorrection, and when νd_p is not less than 30, undercorrection occurs. In addition, in some embodiments, νd_p may further satisfy Expression (9a): 20 < νd_p < 28 to improve the performance of chromatic aberration of magnification correction.

[0081] Optionally, in some embodiments, the fourth lens 104 or the fifth lens 105 satisfies Expression (10): 1.59 < nd_p < 1.71, where nd_p is the refractive index of the lens with positive optical power among the fourth lens 104 and the fifth lens 105. When nd_p does not exceed 1.59, although the curvature radius of the lens surface is smaller, which is more conducive to miniaturization, however, it will cause an increase in the negative Petzval sum and generate field curvature. When nd_p is not less than 1.71, the curvature radius becomes larger, and it will also cause the angle of the chief ray incident on the sensor to become larger.

[0082] Optionally, in some embodiments, the telephoto lens further satisfies Expression (11): 0.55 < f 123 / f < 1.2, where f 123 is the combined focal length of the first lens 101, the second lens 102, and the third lens 103. In the telephoto lens, when f 123 / f does not exceed 0.55, the positive refractive power becomes too strong. Although the length dimension of the lens will become shorter, field curvature will occur, resulting in a decrease in the resolution of the peripheral part of the image. When f 123 / f is not less than 1.2, the positive refractive power becomes weak, and it will cause the length dimension of the lens to become larger.

[0083] Such as Figure 19As shown, unlike the aforementioned embodiments, this embodiment of the present invention also provides a telephoto lens comprising five lenses, including a first lens 101, a second lens 102, a third lens 103, a fourth lens 104, and a fifth lens 105 arranged sequentially along the optical axis from the object side to the image side. The optical powers of the first lens 103, second lens 102, third lens 103, fourth lens 104, and fifth lens 105 are positive, positive, negative, positive, and negative, respectively. At least one lens is an aspherical lens. The telephoto lens satisfies the following five expressions: 4.1 < ω < 9.0, 1.9 <f / Dia_m<3.4,60<υd_F,0.70<TTL / f<1.05,3<f×tanω<7。

[0084] These five expressions are the same as expressions (1), (2), (3), (4) and (5) in the aforementioned embodiments. Aspherical lenses can also refer to the aforementioned embodiments to give the aspherical shape formula, and their specific meanings will not be repeated.

[0085] As can be seen, in this embodiment, the five lenses not only satisfy the five expressions mentioned above, but are also arranged in a positive, positive, negative, positive, negative layout, and at least one lens is an aspherical lens. Therefore, this telephoto lens with five lenses can be made smaller than a conventional telephoto lens with five lenses, and has superior image quality.

[0086] Optionally, in some embodiments, for a telephoto lens with five lenses, the expression (6) or expression (6a) given in the foregoing embodiments can also be satisfied to take into account the smaller length dimension of the telephoto lens and the weaker spherical aberration.

[0087] Optionally, in some embodiments, for a telephoto lens with five lenses, the first lens 101 has a positive optical power, and the second lens 102 and the third lens 103 form a cemented lens with positive and negative optical powers respectively. The cemented lens can also satisfy the expression (7) given in the foregoing embodiments, thereby more effectively correcting chromatic aberration.

[0088] Optionally, in some embodiments, the cemented lens may also satisfy the expression (7a) given in the foregoing embodiments to improve the chromatic aberration correction capability.

[0089] Optionally, in some embodiments, the first lens 101 and the second lens 102 can also form a cemented lens with positive and negative optical powers, respectively. In this case, the cemented lens satisfies the expression (12): 200 < νda × νdb × (1 / fa + 1 / fb) / (νdb / fa + νda / fb), where νda represents the Abbe number of the object-side lens of the cemented lens, νdb represents the Abbe number of the image-side lens of the cemented lens, fa represents the focal length of the object-side lens of the cemented lens, and fb represents the focal length of the image-side lens of the cemented lens. A telephoto lens that satisfies this expression (12) can reduce chromatic aberration when light passes through the cemented lens, thereby suppressing axial chromatic aberration.

[0090] Optionally, in some embodiments, the fourth lens 104 and the fifth lens 105 also satisfy the expression (13): 50 < (νd4 + νd5) × 0.5 < 80, where νd4 represents the Abbe number of the fourth lens 104 and νd5 represents the Abbe number of the fifth lens 105. (νd4 + νd5) × 0.5 represents the average Abbe number of the two lenses on the image side. When this average value is not greater than 50, the dispersion difference between the positive and negative lenses will become too large, easily resulting in chromatic aberration on the short wavelength side. When this average value is not less than 80, the dispersion difference between the positive and negative lenses will become smaller, leading to insufficient chromatic aberration correction.

[0091] Furthermore, in some embodiments, in order to improve the magnification chromatic aberration correction capability, the fourth lens 104 and the fifth lens 105 also satisfy the expression (13a): 54<(νd4+νd5)×0.5<73.

[0092] Optionally, in some embodiments, for a telephoto lens with five lenses, the telephoto lens also satisfies at least one of the expressions (1a), (2a) and (3a) given in the foregoing embodiments, and the advantages of such a telephoto lens can be found in the description of the foregoing embodiments.

[0093] Optionally, in some embodiments, for a telephoto lens with five lenses, the fourth lens 104 or the fifth lens 105 may satisfy at least one of the expressions (8) and (9), (8a) and (9a) given in the foregoing embodiments, and the advantages of such a telephoto lens can be found in the description of the foregoing embodiments.

[0094] Optionally, in some embodiments, for a telephoto lens with five lenses, the fourth lens 104 or the fifth lens 105 can satisfy the expression (10) given in the foregoing embodiments, and the advantages of such a telephoto lens can be found in the description of the foregoing embodiments.

[0095] Optionally, in some embodiments, for a telephoto lens with five lenses, the telephoto lens may also satisfy the expression (11) or expression (11a) given in the foregoing embodiments. The advantages of such a telephoto lens can be found in the description of the foregoing embodiments.

[0096] The implementation process of this application will be described in detail below using specific implementation methods as examples.

[0097] In the tables below, surface numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 represent surface designations from the object side to the image side, corresponding to the mirror surfaces of the first lens 101, the second lens 102, the third lens 103, the fourth lens 104, and the fifth lens 101, respectively. Surface number 11 represents the surface of the filter closest to the object side. Furthermore, in each numerical embodiment, r represents the radius of curvature, d represents the thickness / distance, Dia represents the outer diameter of the lens (all in mm), nd represents the refractive index to the d-line, and νd represents the Abbe number to the d-line. Surface numbers marked with an asterisk (*) indicate that the mirror surface is aspherical, and aspherical shapes can be defined by the formulas given in the preceding embodiments.

[0098] Referring to the schematic diagrams in the accompanying drawings, the two mirror surfaces of the first lens 101 are surface F1 and surface F2, the two mirror surfaces of the second lens 102 are surface F3 and surface F4, the two mirror surfaces of the third lens 103 are surface F5 and surface F6, the two mirror surfaces of the fourth lens 104 are surface F7 and surface F8, and the two mirror surfaces of the fifth lens 105 are surface F9 and surface F10. The aforementioned surface numbers 1 to 10 correspond one-to-one with surface F1 to surface F10. d1 represents the distance between the aperture stop and surface F1, and d2 to d10 represent the distances between two adjacent surfaces from the object side to the image side, respectively. For example, d2 represents the distance between surface F1 and surface F2 (i.e., the thickness of the first lens 101), d3 represents the distance between surface F2 and surface F3, ..., d10 represents the distance between surface F9 and surface F10 (i.e., the thickness of the fifth lens 105), and d11 represents the distance between surface F10 and the filter.

[0099] Numerical Example 1:

[0100] The telephoto lens corresponding to numerical embodiment 1 Figure 1 The embodiments shown are illustrated. Data for each surface of the telephoto lens in Numerical Example 1 are shown in Table 1, data for the aspherical lens are shown in Table 2, and various data at infinity focus are shown in Table 3.

[0101] Table 1: Surface parameters of each lens in numerical embodiment 1

[0102]

[0103] Table 2: Aspherical parameters in numerical example 1

[0104] Face number K A4 A6 A8 A10 3 0.00000E+00 -1.61039E-04 -1.29332E-07 5.19678E-09 0.00000E+00 4 0.00000E+00 -1.95901E-04 -1.20700E-06 1.44921E-08 0.00000E+00 5 0.00000E+00 -9.44452E-05 -2.28525E-06 5.27273E-09 0.00000E+00 6 0.00000E+00 -2.37734E-04 -9.53884E-06 -1.48998E-07 0.00000E+00 7 0.00000E+00 -1.66971E-04 -9.23966E-06 -1.81999E-07 0.00000E+00 8 0.00000E+00 -2.20496E-04 -9.46079E-06 -1.14730E-07 0.00000E+00

[0105] Table 3: Other parameters

[0106] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 40.000 2.860 7.500 5.330 40.290 1.407

[0107] Numerical Example 2:

[0108] The telephoto lens corresponding to numerical embodiment 2 Figure 3 The embodiments shown are illustrated. Data for each surface of the telephoto lens in Numerical Example 2 are shown in Table 4, data for the aspherical lens are shown in Table 5, and various data at infinity focus are shown in Table 6.

[0109] Table 4: Surface parameters of each lens in numerical embodiment 2

[0110]

[0111] Table 5: Aspherical parameters in numerical example 2

[0112] Face number K A4 A6 A8 A10 1 0.00000E+00 3.50633E-06 -9.10562E-08 -6.66936E-10 0.00000E+00 2 0.00000E+00 1.71510E-04 -2.94102E-07 -3.09274E-09 0.00000E+00 3 0.00000E+00 1.38600E-05 1.91538E-06 -1.88878E-08 0.00000E+00 4 0.00000E+00 -9.00601E-06 2.35737E-06 -2.50796E-08 0.00000E+00 5 0.00000E+00 -1.82645E-04 2.23818E-06 -1.49004E-08 0.00000E+00 6 0.00000E+00 -7.29289E-04 3.08823E-06 -6.69811E-08 0.00000E+00 7 0.00000E+00 -6.07883E-04 -8.20616E-06 -1.09352E-07 0.00000E+00 8 0.00000E+00 -5.78323E-04 8.13878E-06 -6.35280E-09 0.00000E+00

[0113] Table 6: Other parameters

[0114] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 40.000 2.860 7.500 5.330 38.130 0.800

[0115] Numerical Example 3:

[0116] The telephoto lens corresponding to numerical embodiment 3 Figure 5 The embodiments shown are illustrated. Data for each surface of the telephoto lens in numerical embodiment 3 are shown in Table 7, data for the aspherical lens are shown in Table 8, and various data at infinity focus are shown in Table 9.

[0117] Table 7: Surface parameters of each lens in numerical embodiment 3

[0118]

[0119] Table 8: Aspherical parameters in numerical example 3

[0120] Face number K A4 A6 A8 A10 1 0.00000E+00 -6.76800E-06 -3.02355E-08 -7.92142E-10 0.00000E+00 2 0.00000E+00 2.13047E-04 4.84706E-07 -1.91278E-08 0.00000E+00 3 0.00000E+00 5.64424E-05 3.46423E-06 -4.29772E-08 0.00000E+00 4 0.00000E+00 8.74664E-05 4.12486E-06 -4.60370E-08 0.00000E+00 5 0.00000E+00 -2.19260E-04 9.79867E-07 -4.01701E-09 0.00000E+00 6 0.00000E+00 -7.44773E-04 -9.42423E-06 9.14785E-09 0.00000E+00 7 0.00000E+00 -2.15891E-04 -8.09235E-06 -1.78360E-07 0.00000E+00 8 0.00000E+00 -2.75019E-04 -5.26052E-06 -8.57022E-08 0.00000E+00

[0121] Table 9: Other parameters

[0122] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 40.000 2.860 7.520 5.330 40.130 0.801

[0123] Numerical Example 4:

[0124] The telephoto lens corresponding to numerical embodiment 4 Figure 7The embodiments shown are illustrated. Data for each surface of the telephoto lens in numerical embodiment 4 are shown in Table 10, data for the aspherical lens are shown in Table 11, and various data at infinity focus are shown in Table 12.

[0125] Table 10: Surface parameters of each lens in numerical embodiment 4

[0126]

[0127] Table 11: Aspherical parameters in numerical example 4

[0128] Face number K A4 A6 A8 A10 3 0.00000E+00 -1.94277E-04 1.64185E-07 2.36188E-09 0.00000E+00 4 0.00000E+00 -3.33119E-04 -5.62113E-07 8.31842E-09 0.00000E+00 5 0.00000E+00 -5.37893E-05 -1.29394E-06 1.05466E-08 0.00000E+00 6 0.00000E+00 2.03407E-04 1.57782E-07 -8.30044E-09 0.00000E+00 7 0.00000E+00 -2.22487E-04 -5.53050E-06 -9.80644E-08 0.00000E+00 8 0.00000E+00 -2.52483E-04 -6.13149E-06 -6.57700E-08 0.00000E+00

[0129] Table 12: Other parameters

[0130] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 40.000 2.860 7.520 5.330 40.260 0.511

[0131] Numerical Example 5:

[0132] The telephoto lens corresponding to numerical embodiment 5 Figure 9 The embodiments shown are illustrated. Data for each surface of the telephoto lens in numerical embodiment 5 are shown in Table 13, data for the aspherical lens are shown in Table 14, and various data at infinity focus are shown in Table 15.

[0133] Table 13: Surface parameters of each lens in numerical embodiment 5

[0134]

[0135] Table 14: Aspherical parameters in numerical example 5

[0136] Face number K A4 A6 A8 A10 A12 6 1.72000E-01 -1.05709E-04 3.03689E-06 -1.43018E-07 5.08744E-09 -9.14724E-11 7 1.60000E+00 -2.21738E-05 2.33786E-06 -8.63111E-08 2.92130E-09 -5.80204E-11 8 -9.51000E-01 -1.58755E-03 4.55305E-05 -2.73020E-06 1.02360E-07 -1.92155E-09 9 5.20000E+00 -1.35182E-03 3.90320E-05 -1.51501E-06 3.95641E-08 -5.16279E-10

[0137] Table 15: Other Parameters

[0138] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 40.050 2.861 7.500 5.330 36.220 1.095

[0139] Numerical Example 6:

[0140] The telephoto lens corresponding to numerical embodiment 6 Figure 11 The embodiments shown are illustrated. Data for each surface of the telephoto lens in numerical embodiment 6 are shown in Table 16, data for the aspherical lens are shown in Table 17, and various data at infinity focus are shown in Table 18.

[0141] Table 16: Surface parameters of each lens in numerical embodiment 6

[0142]

[0143] Table 17: Aspherical parameters in numerical example 6

[0144] Face number K A4 A6 A8 A10 A12 6 1.72000E-01 -3.10342E-04 5.36859E-07 2.74426E-08 5.92440E-10 -5.82225E-11 7 1.60000E+00 -2.83495E-04 5.00306E-06 4.56550E-08 -3.17752E-09 2.20922E-11 8 -9.51000E-01 -3.35068E-03 1.02389E-04 -1.48838E-06 -2.65146E-08 6.46829E-10 9 5.20000E+00 -2.98645E-03 1.22018E-04 -3.39708E-06 4.90728E-08 -2.90836E-10

[0145] Table 18: Other Parameters

[0146] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 43.000 2.867 6.950 5.330 36.400 0.670

[0147] Numerical Example 7:

[0148] The telephoto lens corresponding to numerical embodiment 7 Figure 13 The embodiments shown are illustrated. Data for each surface of the telephoto lens in numerical embodiment 7 are shown in Table 19, data for the aspherical lens are shown in Table 20, and various data at infinity focus are shown in Table 21.

[0149] Table 19: Surface parameters of each lens in numerical embodiment 7

[0150]

[0151] Table 20: Aspherical parameters in numerical example 7

[0152] Face number K A4 A6 A8 A10 A12 6 1.72000E-01 -4.74333E-04 -1.67820E-06 -6.47284E-08 3.17818E-09 -1.59989E-10 7 1.60000E+00 -4.62352E-04 6.33393E-08 6.34134E-08 -4.19733E-09 1.41726E-11 8 -9.51000E-01 -3.19383E-03 5.47473E-05 2.35683E-07 -1.13795E-07 3.41943E-09 9 5.20000E+00 -2.73477E-03 8.72546E-05 -2.06559E-06 1.59779E-08 3.39277E-10

[0153] Table 21: Other parameters

[0154] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 35.000 2.820 8.490 5.330 29.900 1.770

[0155] Numerical Example 8:

[0156] The telephoto lens corresponding to numerical embodiment 8 Figure 15 The embodiments shown are illustrated. Data for each surface of the telephoto lens in numerical embodiment 8 are shown in Table 22, data for the aspherical lens are shown in Table 23, and various data at infinity focus are shown in Table 24.

[0157] Table 22: Surface parameters of each lens in numerical embodiment 8

[0158]

[0159] Table 23: Aspherical parameters in numerical example 8

[0160] Face number K A4 A6 A8 A10 A12 6 1.72000E-01 -7.76634E-05 -4.08289E-08 3.03688E-10 2.77671E-12 -2.04173E-13 7 1.60000E+00 -6.40502E-05 3.55767E-08 2.29431E-09 -4.35614E-11 1.60058E-13 8 -9.51000E-01 -9.59894E-04 1.14320E-05 -1.05575E-07 -1.05522E-09 3.11643E-11 9 5.20000E+00 -9.05496E-04 1.46086E-05 -1.94736E-07 9.99284E-10 6.11604E-12

[0161] Table 24: Other parameters

[0162] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 52.000 2.440 7.450 6.930 45.820 3.225

[0163] Numerical Example 9:

[0164] The telephoto lens corresponding to numerical embodiment 9 Figure 17The embodiments shown are illustrated. Data for each surface of the telephoto lens in numerical embodiment 9 are shown in Table 25, data for the aspherical lens are shown in Table 26, and various data at infinity focus are shown in Table 27.

[0165] Table 25: Surface parameters of each lens in numerical embodiment 9

[0166]

[0167] Table 26: Aspherical parameters in numerical example 9

[0168] Face number K A4 A6 A8 A10 A12 6 1.72000E-01 -8.72104E-04 -3.17244E-06 7.71831E-08 8.76050E-09 -1.04659E-09 7 1.60000E+00 -6.49350E-04 1.80176E-06 2.97977E-07 -1.76847E-08 2.11193E-11 8 -9.51000E-01 -6.99900E-03 2.60784E-04 -2.10137E-05 1.63966E-06 -6.48947E-08 9 5.20000E+00 -6.84782E-03 3.53093E-04 -2.29932E-05 1.26072E-06 -3.58059E-08

[0169] Table 27: Other Parameters

[0170] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 26.500 2.860 7.500 3.520 23.920 0.482

[0171] Numerical Example 10:

[0172] The telephoto lens corresponding to numerical embodiment 10 Figure 19 The embodiments shown are illustrated. Data for each surface of the telephoto lens in numerical embodiment 10 are shown in Table 28, data for the aspherical lens are shown in Table 29, and various data for infinity focusing are shown in Table 30.

[0173] Table 28: Surface parameters of each lens in numerical embodiment 10

[0174]

[0175] Table 29: Aspherical parameters in numerical example 10

[0176] Face number K A4 A6 A8 A10 A12 6 1.72000E-01 8.97032E-05 1.67782E-05 -4.01562E-07 2.29951E-09 3.91562E-11 7 1.60000E+00 2.63438E-04 2.37671E-05 -4.26650E-07 1.80437E-09 1.50853E-10 8 -9.51000E-01 -2.16940E-04 2.00157E-05 -1.35942E-06 4.03555E-08 -5.11915E-10 9 5.20000E+00 1.15674E-05 1.10059E-05 -6.99315E-07 2.01838E-08 -2.28150E-10

[0177] Table 30: Other parameters

[0178] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 40.000 2.860 7.470 3.520 36.400 0.745

[0179] Numerical Example 11:

[0180] The telephoto lens corresponding to numerical embodiment 11 Figure 21 The embodiments shown are described below. Data for each surface of the telephoto lens in numerical embodiment 11 are shown in Table 31, data for the aspherical lens are shown in Table 32, and various data for infinity focusing are shown in Table 33.

[0181] Table 31: Surface parameters of each lens in numerical embodiment 11

[0182]

[0183] Table 32: Aspherical parameters in numerical example 11

[0184] Face number K A4 A6 A8 4 0.00000E+00 1.58318E-04 5.19299E-07 1.21228E-08 5 0.00000E+00 2.40104E-04 1.32203E-06 3.15724E-08 6 0.00000E+00 -8.31083E-05 -4.72370E-07 -2.57376E-08 7 0.00000E+00 -3.51535E-04 -6.85050E-06 -4.91729E-07 8 0.00000E+00 -4.90700E-04 1.41453E-07 -3.15518E-07 9 0.00000E+00 -3.95117E-04 -9.99858E-07 -1.36354E-07

[0185] Table 33: Other Parameters

[0186] Focal length / mm F-number Viewpoint / ° Image height / mm Lens overall length / mm Back focal length / mm 40.000 2.840 7.470 3.520 37.130 0.801

[0187] Furthermore, for the numerical embodiments 1 to 11 above, the parameters corresponding to expressions (1) to (13) can also be shown in Tables 34 and 35 below.

[0188] Table 34: Parameters satisfied by the expressions in numerical examples 1 to 4

[0189] expression Numerical Example 1 Numerical Example 2 Numerical Example 3 Numerical Example 4 (1) 7.57 7.57 7.52 7.50 (2) 2.67 2.67 2.61 2.67 (3) 95.10 81.60 81.60 81.60 (4) 1.00 0.95 1.00 1.01 (5) 5.27 5.32 5.28 5.27 (6) 0.76 0.39 0.42 0.82

[0190] Table 35: Parameters satisfied by the expressions in numerical examples 5 to 11

[0191] expression Numerical Example 5 Numerical Example 6 Numerical Example 7 Numerical Example 8 Numerical Example 9 Numerical Example 10 Numerical Example 11 (1) 7.50 6.95 8.49 7.45 7.50 7.47 7.47 (2) 2.59 2.91 2.57 2.69 2.56 2.61 2.61 (3) 95.10 70.40 95.10 95.10 95.10 95.10 95.10 (4) 0.93 0.80 0.85 0.88 0.88 0.91 0.93 (5) 5.05 5.24 5.22 6.80 3.49 5.24 5.24 (6) 0.95 0.45 0.67 0.78 0.77 0.62 0.62 (7) 6.02 27.61 23.44 14.40 20.62 24.09 - (8) - - - - - - 219.51 (9) 67.96 55.61 67.96 67.96 67.96 71.15 57.55 (10) 21.45 26.90 21.45 21.45 21.45 22.40 55.90 (11) 55.90 56.30 55.90 55.90 55.90 55.90 55.90 (12) 1.65 1.60 1.65 1.65 1.65 1.65 1.54 (13) 0.88 0.83 1.09 0.90 1.01 0.67 0.93

[0192] like Figure 23 The diagram shows a simplified structural representation of a shooting device according to an embodiment of the present invention. The shooting device includes a CMOS sensor or a CCD sensor, and a telephoto lens can be mounted and fixed in front of the sensor, located in the optical path where the sensor receives light. This shooting device can be a mobile phone, digital camera, action camera, wearable smart device, etc., with shooting capabilities.

[0193] In the shooting device, by applying the telephoto lens of the aforementioned embodiment, the overall structural size of the shooting device can be reduced while still capturing high-quality images.

[0194] like Figure 24 The diagram shows a simplified structural representation of a mobile platform according to an embodiment of the present invention. The mobile platform is equipped with a telephoto lens or imaging device as described in any of the foregoing embodiments. Exemplarily, the mobile platform of this embodiment can be an unmanned aerial vehicle, a robot, an autonomous vehicle, or a handheld gimbal, etc.

[0195] By applying the telephoto lens or shooting device of any of the foregoing embodiments to a mobile platform, it is helpful to reduce the overall structural size of the mobile platform, reduce the load, and improve the battery life, while still capturing high-quality images. For example, for drone devices, miniaturization and weight reduction of the telephoto lens or shooting device are more conducive to improving the drone's battery life, extending the continuous shooting time, reducing the number of battery swaps or charging, and obtaining better image quality.

[0196] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0197] The terms "an embodiment," "embodiment," or "one or more embodiments" as used herein mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention. Furthermore, please note that the examples of the phrase "in one embodiment" do not necessarily all refer to the same embodiment.

[0198] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0199] In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This invention can be implemented by means of hardware comprising a plurality of different elements and by means of a suitably programmed computer. In a unit claim enumerating a plurality of means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

[0200] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A telephoto lens, characterized in that, Comprising a first lens, a second lens, a third lens, and a fourth lens arranged in sequence from the object side to the image side along the optical axis, and the telephoto lens satisfies the following three expressions: 4.1 < ω < 9.0, 1.9 < f / Dia_m < 3.4, and 60 < υd_F; Where, ω is the maximum angle of the incident light of the first lens, f is the overall focal length of the telephoto lens, Dia_m is the larger outer diameter of the first lens and the second lens, and υd_F is the larger Abbe number among the first two positive-power lenses close to the object side.

2. The telephoto lens according to claim 1, characterized in that, The optical powers of the first lens, the second lens, the third lens, and the fourth lens are positive, negative, negative, positive in sequence, or positive, negative, positive, positive.

3. The telephoto lens according to claim 1, characterized in that, It further includes a fifth lens, and the fifth lens is disposed between the fourth lens and the image side; Where, the optical powers of the first lens, the second lens, and the third lens are positive, positive, negative in sequence, or positive, negative, negative; and / or, the optical powers of the fourth lens and the fifth lens are positive, negative or negative, positive in sequence.

4. The telephoto lens according to claim 3, characterized in that, The optical powers of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are positive, positive, negative, positive, negative in sequence.

5. The telephoto lens according to claim 1, characterized in that, The telephoto lens further satisfies at least one of the following expressions: 6.8 < ω < 8.6, 2.45 < f / Dia_m < 3.0, 70 < υd_F < 100.

6. A telephoto lens, characterized in that, Comprising a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged in sequence from the object side to the image side along the optical axis, where the optical powers of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are positive, positive, negative, positive, negative in sequence, and at least one lens is an aspherical lens; the telephoto lens satisfies the following five expressions: 4.1 < ω < 9.0, 1.9 < f / Dia_m < 3.4, 60 < υd_F, 0.70 < TTL / f < 1.05, and 3 < f × tan ω < 7; Where, ω is the maximum angle of the incident light of the first lens, f is the overall focal length of the telephoto lens, Dia_m is the larger outer diameter of the first lens and the second lens, υd_F is the larger Abbe number of the first lens and the second lens, and TTL is the distance on the optical axis from the object-side surface of the first lens to the imaging surface when focusing on an object at infinity.

7. The telephoto lens according to claim 1 or 6, characterized in that, The telephoto lens further satisfies the following expression: 0.35 < f1 / f < 1.1, or satisfies 0.39 ≤ f1 / f ≤ 0.

82.

8. The telephoto lens according to claim 1 or 6, characterized in that, The telephoto lens further satisfies at least one of the following expressions: 0.8 ≤ TTL / f ≤ 1.01, 3.49 ≤ f × tan ω ≤ 6.

8.

9. The telephoto lens according to claim 1 or 6, characterized in that, At least one of the first lens, the second lens, and the third lens is an aspherical lens.

10. The telephoto lens according to claim 1 or 6, characterized in that, The first lens has a positive optical power, and the second lens and the third lens form a cemented lens with positive and negative optical powers respectively. The cemented lens satisfies: 5 < νda × νdb × (1 / fa + 1 / fb) / (νdb / fa + νda / fb) < 35; Wherein, νda represents the Abbe number of the object-side lens of the cemented lens, νdb represents the Abbe number of the image-side lens of the cemented lens, fa represents the focal length of the object-side lens of the cemented lens, and fb represents the focal length of the image-side lens of the cemented lens.

11. The telephoto lens according to claim 10, characterized in that, The cemented lens also satisfies: 6.02≤νda×νdb×(1 / fa + 1 / fb) / (νdb / fa + νda / fb) ≤27.

61.

12. The telephoto lens according to claim 3 or 6, characterized in that, The fourth lens or the fifth lens satisfies at least one of the following expressions: 50 < νd_n < 60, 18 < νd_p < 30, 1.59 <nd_p< 1.71; Wherein, νd_n is the Abbe number of the lens with negative optical power in the fourth and fifth lenses, νd_p is the Abbe number of the lens with positive optical power in the fourth and fifth lenses, and nd_p is the refractive index of the lens with positive optical power in the fourth and fifth lenses.

13. The telephoto lens according to claim 12, characterized in that, The fourth lens or the fifth lens also satisfies at least one of the following expressions: 55 <νd_n < 58, 20 < νd_p < 28.

14. The telephoto lens according to claim 1 or 6, characterized in that, The telephoto lens also meets the following requirement: 0.55 <f 123 / f < 1.2, f 123 The focal length is the combined focal length of the first lens, the second lens, and the third lens.

15. A shooting device, characterized in that, The shooting device includes the telephoto lens as described in any one of claims 1 to 14.

16. A mobile platform, characterized in that, The movable platform includes the telephoto lens as described in any one of claims 1 to 14 or the shooting device as described in claim 15.

Images