A drone zoom lens and a drone

Abstract

The present application relates to the field of optics, specifically to a zoom lens for unmanned aerial vehicle and unmanned aerial vehicle, the zoom lens for unmanned aerial vehicle is sequentially composed of a first fixed lens group with positive focal length, a first variable power lens group with negative focal length, a second fixed lens group with positive focal length, a diaphragm, a second variable power lens group with negative focal length, a third fixed lens group with positive focal length and a focusing lens group with negative focal length from the object plane side to the image plane side; the first variable power lens group, the second variable power lens group and the focusing lens group move along the direction of the main optical axis of the zoom lens for unmanned aerial vehicle; the zoom lens for unmanned aerial vehicle satisfies the following condition formula: TTL / ft<0.8; wherein, TTL is the total optical length of the zoom lens for unmanned aerial vehicle, and ft is the focal length of the zoom lens for unmanned aerial vehicle in a telephoto state. The zoom lens for unmanned aerial vehicle can be installed in a smaller unmanned aerial vehicle, and meanwhile, pictures at a relatively far position can be shot, so that the application range of the zoom lens for unmanned aerial vehicle is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optics, in particular to a unmanned aerial vehicle zoom lens and unmanned aerial vehicle. BACKGROUND

[0002] Unmanned aerial vehicle, referred to as "drone", English abbreviation "UAV", is a radio remote control equipment and self-provided program control device to manipulate the no-load aircraft, or by vehicle-mounted computer completely or intermittently self-operated.

[0003] The existing zoom lens used by the unmanned aerial vehicle usually selects a larger volume lens to make the zooming ability better, and also selects a larger focal length lens to meet the requirements of ultra-high definition and long distance view, but how to realize a smaller volume but larger focal length lens is still a problem to be solved. SUMMARY

[0004] The present application will solve the existing technical problems, provide a unmanned aerial vehicle zoom lens and unmanned aerial vehicle, the unmanned aerial vehicle zoom lens can be installed in smaller unmanned aerial vehicle, and the picture of the far position can also be shot, the application range of the unmanned aerial vehicle zoom lens is increased.

[0005] The technical scheme provided by the present application is as follows:

[0006] A unmanned aerial vehicle zoom lens, the unmanned aerial vehicle zoom lens is composed of a first fixed lens group with positive focal length, a first zoom lens group with negative focal length, a second fixed lens group with positive focal length, a diaphragm, a second zoom lens group with negative focal length, a third fixed lens group with positive focal length and a focusing lens group with negative focal length from the object side to the image side; the first zoom lens group, the second zoom lens group and the focusing lens group move along the main optical axis direction of the unmanned aerial vehicle zoom lens; the unmanned aerial vehicle zoom lens satisfies the following condition formula: TTL / ft<0.8; wherein TTL is the total optical length of the unmanned aerial vehicle zoom lens, and ft is the focal length of the telephoto state of the unmanned aerial vehicle zoom lens.

[0007] In the technical scheme, through the design of the above structure and parameters, a smaller volume and a larger focal length at the telephoto end can be realized, the unmanned aerial vehicle zoom lens can be installed in smaller unmanned aerial vehicle, and the picture of the far position can also be shot, the application range of the unmanned aerial vehicle zoom lens is increased.

[0008] Preferably, the first fixed lens group is composed of a first fixed lens with positive focal length, a second fixed lens with negative focal length and a third fixed lens with positive focal length from the object side to the image side, and the second fixed lens and the third fixed lens are cemented;

[0009] The third fixed lens group sequentially comprises, from the object side to the image side, a seventh fixed lens with positive focal power, an eighth fixed lens with positive focal power, a ninth fixed lens with negative focal power, and a tenth fixed lens with positive focal power, and the eighth fixed lens and the ninth fixed lens are cemented.

[0010] Preferably, the second fixed lens group sequentially comprises, from the object side to the image side, a fourth fixed lens with positive focal power, a fifth fixed lens with positive focal power, and a sixth fixed lens with positive focal power, and the fifth fixed lens and the sixth fixed lens are cemented.

[0011] Or

[0012] The second fixed lens group sequentially comprises, from the object side to the image side, a fourth fixed lens with positive focal power and a fifth fixed lens with positive focal power.

[0013] Preferably, the first variable magnification lens group sequentially comprises, from the object side to the image side, a first variable magnification lens with negative focal power and a second variable magnification lens with negative focal power.

[0014] The second variable magnification lens group sequentially comprises, from the object side to the image side, a third variable magnification lens with negative focal power and a fourth variable magnification lens with positive focal power, and the third variable magnification lens and the fourth variable magnification lens are cemented.

[0015] Preferably, the focusing lens group sequentially comprises, from the object side to the image side, a first focusing lens with negative focal power, a second focusing lens with positive focal power, a third focusing lens with negative focal power, and a fourth focusing lens with positive focal power, and the second focusing lens, the third focusing lens, and the fourth focusing lens are cemented into a three-cemented lens.

[0016] Preferably, the unmanned aerial vehicle zoom lens satisfies the following conditional expression:

[0017] TTL < 95 mm;

[0018] ft > 145 mm.

[0019] In the technical solution, the above parameters are limited, so that a smaller volume and a larger focal length at the telephoto end can be achieved.

[0020] Preferably, the unmanned aerial vehicle zoom lens satisfies the following conditional expression:

[0021] ft / fw > 4;

[0022] Wherein, fw is the focal length of the wide-angle state of the unmanned aerial vehicle zoom lens.

[0023] In the technical solution, the above parameters are limited, so that the unmanned aerial vehicle can take high-definition images of objects at different distances during flight, further increasing the imaging capability of the unmanned aerial vehicle zoom lens.

[0024] Preferably, the unmanned aerial vehicle zoom lens satisfies the following conditional expression:

[0025] 0.15 < XG2 / TTL < 0.25;

[0026] XG2 is the maximum movement distance of the first variable magnification lens group.

[0027] In the technical solution, the accurate zooming of the unmanned aerial vehicle zoom lens is realized within a certain distance range, the unmanned aerial vehicle zoom lens is miniaturized, and the imaging capability of the unmanned aerial vehicle zoom lens is increased.

[0028] Preferably, the unmanned aerial vehicle zoom lens satisfies the following conditional expression:

[0029] XG6 / TTL > 0.15;

[0030] XG6 is the maximum movement distance of the focusing lens group.

[0031] In the technical solution, the various aberrations generated by the unmanned aerial vehicle zoom lens are reduced, and the imaging capability of the unmanned aerial vehicle zoom lens is increased.

[0032] One of the purposes of the present application is also to provide an unmanned aerial vehicle, comprising: an unmanned aerial vehicle zoom lens; and an imaging element configured to receive an image formed by the unmanned aerial vehicle zoom lens.

[0033] Compared with the prior art, the unmanned aerial vehicle zoom lens and the unmanned aerial vehicle provided by the present application have the following advantages

[0034] Advantages:

[0035] 1. Through the design of the above structure and parameters, a smaller size and a larger focal length at the telephoto end can be achieved. The unmanned aerial vehicle zoom lens can be installed in a smaller unmanned aerial vehicle, and at the same time, it can also capture images of a remote location, thereby increasing the application range of the unmanned aerial vehicle zoom lens.

[0036] 2. Through the limitation of the above parameters, the unmanned aerial vehicle can take high-definition images of objects at different distances during flight, further increasing the imaging capability of the unmanned aerial vehicle zoom lens.

[0037] 3. The accurate zooming of the unmanned aerial vehicle zoom lens is realized within a certain distance range, the unmanned aerial vehicle zoom lens is miniaturized, and the imaging capability of the unmanned aerial vehicle zoom lens is increased. BRIEF DESCRIPTION OF DRAWINGS

[0038] The above features, technical characteristics, advantages and implementation methods of the unmanned aerial vehicle zoom lens and the unmanned aerial vehicle will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.

[0039] Figure 1 is a structural schematic diagram of a UAV zoom lens of the present application;

[0040] Figure 2 is a coma diagram of a telephoto state of a UAV zoom lens of the present application;

[0041] Figure 3 is an aberration diagram of a telephoto state of a UAV zoom lens of the present application;

[0042] Figure 4 is a coma diagram of a wide-angle state of a UAV zoom lens of the present application;

[0043] Figure 5 is an aberration diagram of a wide-angle state of a UAV zoom lens of the present application;

[0044] Figure 6 is a structural schematic diagram of a UAV zoom lens of the present application;

[0045] Figure 7 is a coma diagram of a telephoto state of a UAV zoom lens of the present application;

[0046] Figure 8 is an aberration diagram of a telephoto state of a UAV zoom lens of the present application;

[0047] Figure 9 is a coma diagram of a wide-angle state of a UAV zoom lens of the present application;

[0048] Figure 10 is an aberration diagram of a wide-angle state of a UAV zoom lens of the present application.

[0049] BRIEF DESCRIPTION OF DRAWINGS G1, first fixed lens group; G2, first variable lens group; G3, second fixed lens group; G4, second variable lens group; G5, third fixed lens group; G6, focusing lens group; G7, auxiliary assembly; a1, first fixed lens; a2, second fixed lens; a3, third fixed lens; a4, fourth fixed lens; a5, fifth fixed lens; a6, sixth fixed lens; a7, seventh fixed lens; a8, eighth fixed lens; a9, ninth fixed lens; a10, tenth fixed lens; b1, first variable lens; b2, second variable lens; b3, third variable lens; b4, fourth variable lens; c1, first focusing lens; c2, second focusing lens; c3, third focusing lens; c4, fourth focusing lens; STO, stop; CG, protective glass. DETAILED DESCRIPTION

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some figures, only one of components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0052] Example 1

[0053] like Figure 1 As shown, a drone zoom lens is composed of, from the object plane side to the image plane side, a first fixed lens group G1 with positive optical power, a first zoom lens group G2 with negative optical power, a second fixed lens group G3 with positive optical power, an aperture stop STO, a second zoom lens group G4 with negative optical power, a third fixed lens group G5 with positive optical power, and a focusing lens group G6 with negative optical power.

[0054] The first zoom lens group G2, the second zoom lens group G4, and the focusing lens group G6 move along the main optical axis of the UAV zoom lens;

[0055] The zoom lens of the drone satisfies the following condition:

[0056] TTL / ft < 0.8;

[0057] Wherein, TTL is the total optical length of the drone zoom lens, and fw is the focal length of the drone zoom lens in telephoto mode.

[0058] In this embodiment, through the design of the above structure and parameters, a smaller volume and a larger focal length at the telephoto end can be achieved. The drone zoom lens can be installed in a smaller drone, while also being able to capture images from a greater distance, thus increasing the applicability of the drone zoom lens.

[0059] The first fixed lens group G1 consists of a first fixed lens a1 with positive optical power, a second fixed lens a2 with negative optical power, and a third fixed lens a3 with positive optical power, from the object plane side to the image plane side. The second fixed lens a2 and the third fixed lens a3 are cemented together.

[0060] The third fixed lens group G5 comprises, in order from the object side to the image side, a seventh fixed lens a7 of positive refractive power, an eighth fixed lens a8 of positive refractive power, a ninth fixed lens a9 of negative refractive power, and a tenth fixed lens a10 of positive refractive power, and the eighth fixed lens a8 and the ninth fixed lens a9 are cemented.

[0061] The second fixed lens group G3 comprises, in order from the object side to the image side, a fourth fixed lens a4 of positive refractive power, a fifth fixed lens a5 of positive refractive power, and a sixth fixed lens a6 of positive refractive power, and the fifth fixed lens a5 and the sixth fixed lens a6 are cemented.

[0062] Or

[0063] The second fixed lens group G3 comprises, in order from the object side to the image side, a fourth fixed lens a4 of positive refractive power and a fifth fixed lens a5 of positive refractive power.

[0064] The first variable lens group G2 comprises, in order from the object side to the image side, a first variable lens b1 of negative refractive power and a second variable lens b2 of negative refractive power.

[0065] The second variable lens group G4 comprises, in order from the object side to the image side, a third variable lens b3 of negative refractive power and a fourth variable lens b4 of positive refractive power, and the third variable lens b3 and the fourth variable lens b4 are cemented.

[0066] The focusing lens group G6 comprises, in order from the object side to the image side, a first focusing lens c1 of negative refractive power, a second focusing lens c2 of positive refractive power, a third focusing lens c3 of negative refractive power, and a fourth focusing lens c4 of positive refractive power, and the second focusing lens c2, the third focusing lens c3, and the fourth focusing lens c4 are cemented into a three-cemented lens.

[0067] The unmanned aerial vehicle zoom lens satisfies the following conditional expression:

[0068] TTL < 95 mm;

[0069] ft > 145 mm.

[0070] Through the limitation of the above parameters, a smaller volume and a larger focal length at the telephoto end can be achieved.

[0071] The unmanned aerial vehicle zoom lens satisfies the following conditional expression:

[0072] ft / fw > 4;

[0073] Wherein, ft is the focal length of the wide-angle state of the unmanned aerial vehicle zoom lens.

[0074] By limiting the above parameters, the unmanned aerial vehicle can take high-definition images of objects at different distances during flight, further increasing the imaging capability of the unmanned aerial vehicle zoom lens.

[0075] The unmanned aerial vehicle zoom lens satisfies the following conditional expression:

[0076] 0.15 < XG2 / TTL < 0.25;

[0077] XG2 is the maximum movement distance of the first variable magnification lens group G2.

[0078] By limiting the above parameters, the unmanned aerial vehicle zoom lens achieves accurate zooming within a certain distance range, realizes miniaturization of the unmanned aerial vehicle zoom lens, and increases the imaging capability of the unmanned aerial vehicle zoom lens.

[0079] The unmanned aerial vehicle zoom lens satisfies the following conditional expression:

[0080] XG6 / TTL > 0.15;

[0081] XG6 is the maximum movement distance of the focusing lens group G6.

[0082] By limiting the above parameters, various aberrations generated by the unmanned aerial vehicle zoom lens are reduced, and the imaging capability of the unmanned aerial vehicle zoom lens is increased.

[0083] Embodiment 2

[0084] As shown in Figures 1 to 5 An unmanned aerial vehicle zoom lens, the unmanned aerial vehicle zoom lens comprises, from the object side to the image side, a first fixed lens group G1 with positive refractive power, a first variable magnification lens group G2 with negative refractive power, a second fixed lens group G3 with positive refractive power, a stop STO, a second variable magnification lens group G4 with negative refractive power, a third fixed lens group G5 with positive refractive power, a focusing lens group G6 with negative refractive power, and an auxiliary assembly G7.

[0085] The first variable magnification lens group G2 and the second variable magnification lens group G4 move along the direction of the main optical axis of the unmanned aerial vehicle zoom lens.

[0086] The first fixed lens group G1 comprises, from the object side to the image side, a first fixed lens a1 with positive refractive power, a second fixed lens a2 with negative refractive power, and a third fixed lens a3 with positive refractive power, and the second fixed lens a2 and the third fixed lens a3 are cemented.

[0087] The first variable magnification lens group G2 comprises, from the object side to the image side, a first variable magnification lens b1 with negative refractive power and a second variable magnification lens b2 with negative refractive power.

[0088] The second fixed lens group G3 is composed of a fourth fixed lens a4 with positive refractive power, a fifth fixed lens a5 with positive refractive power and a sixth fixed lens a6 with positive refractive power in order from the object side to the image side, and the fifth fixed lens a5 and the sixth fixed lens a6 are cemented.

[0089] The second variable lens group G4 is composed of a third variable lens b3 with negative refractive power and a fourth variable lens b4 with positive refractive power in order from the object side to the image side, and the third variable lens b3 and the fourth variable lens b4 are cemented.

[0090] The third fixed lens group G5 is composed of a seventh fixed lens a7 with positive refractive power, an eighth fixed lens a8 with positive refractive power, a ninth fixed lens a9 with negative refractive power and a tenth fixed lens a10 with positive refractive power in order from the object side to the image side, and the eighth fixed lens a8 and the ninth fixed lens a9 are cemented.

[0091] The focusing lens group G6 is composed of a first focusing lens c1 with negative refractive power, a second focusing lens c2 with positive refractive power, a third focusing lens c3 with negative refractive power and a fourth focusing lens c4 with positive refractive power in order from the object side to the image side, and the second focusing lens c2, the third focusing lens c3 and the fourth focusing lens c4 are cemented into a three-cemented lens.

[0092] The auxiliary assembly G7 is a protective glass CG.

[0093] The basic lens data of the unmanned aerial vehicle zoom lens of the present embodiment is shown in Table 1, the variable parameters in Table 1 are shown in Table 2, and the aspheric surface coefficients are shown in Table 3.

[0094] In the surface number column, the surface number is shown when the surface on the object side is set as the first surface and the number is increased one by one as it goes toward the image side; in the surface type column, the surface type of a certain lens is shown; in the curvature radius column, the curvature radius of a certain lens is shown, and the curvature radius is positive when the surface is curved toward the object side, and the curvature radius is negative when the surface is curved toward the image side; in the center thickness column, the surface spacing on the optical axis of each surface and the surface on its image side is shown; in the refractive index column, the refractive index of a certain lens is shown; and in the Abbe number column, the Abbe number of a certain lens is shown.

[0095] In Table 2, the specific values of each variable parameter when the unmanned aerial vehicle zoom lens is in the wide-angle end state are shown in the WIDE column, and the specific values of each variable parameter when the unmanned aerial vehicle zoom lens is in the telephoto end state are shown in the TELE column.

[0096] In Table 3, K is the conic coefficient, e is the scientific notation number, for example, e-05 represents 10 -5 .

[0097]

Table 1

[0098]

[0099]

[0100] Table 2

[0101] WIDE TELE D1 1.52 20.35 D2 19.5 0.67 D3 3.44 7.8 D4 4.69 0.33 D5 14.85 0.45 D6 0.24 14.64

[0102] Table 3

[0103]

[0104] In the embodiment, TTL = 89.97 mm, fw = 34.3 mm, ft = 147.49 mm, fno = 3.06-5.19, ft / fw = 4.3, TTL / ft = 0.61;

[0105] wherein TTL is the total track length of the unmanned aerial vehicle zoom lens, ft is the focal length of the unmanned aerial vehicle zoom lens in a telephoto state, fw is the focal length of the unmanned aerial vehicle zoom lens in a wide-angle state, and fno is the aperture number of the unmanned aerial vehicle zoom lens.

[0106] XG2 = 18.83 mm, XG2 / TTL = 0.21;

[0107] XG2 is the maximum movement distance of the first variable magnification lens group G2.

[0108] XG6 = 14.4 mm, XG6 / TTL = 0.16;

[0109] XG6 is the maximum movement distance of the focusing lens group G6.

[0110] Embodiment 3

[0111] As shown in Figures 6 to 10 , an unmanned aerial vehicle zoom lens, the unmanned aerial vehicle zoom lens sequentially comprises, from an object side to an image side, a first fixed lens group G1 with positive refractive power, a first variable magnification lens group G2 with negative refractive power, a second fixed lens group G3 with positive refractive power, a stop STO, a second variable magnification lens group G4 with negative refractive power, a third fixed lens group G5 with positive refractive power, a focusing lens group G6 with negative refractive power, and an auxiliary assembly G7.

[0112] The first variable magnification lens group G2, the second variable magnification lens group G4, and the focusing lens group G6 move along the direction of the main optical axis of the unmanned aerial vehicle zoom lens.

[0113] The first fixed lens group G1 sequentially comprises, from the object side to the image side, a first fixed lens a1 with positive refractive power, a second fixed lens a2 with negative refractive power, and a third fixed lens a3 with positive refractive power, and the second fixed lens a2 and the third fixed lens a3 are cemented.

[0114] The first variable lens group G2 is composed of a first variable lens b1 with negative refractive power and a second variable lens b2 with negative refractive power in order from the object side to the image side.

[0115] The second fixed lens group G3 is composed of a fourth fixed lens a4 with positive refractive power and a fifth fixed lens a5 with positive refractive power in order from the object side to the image side.

[0116] The second variable lens group G4 is composed of a third variable lens b3 with negative refractive power and a fourth variable lens b4 with positive refractive power in order from the object side to the image side, and the third variable lens b3 and the fourth variable lens b4 are cemented.

[0117] The third fixed lens group G5 is composed of a seventh fixed lens a7 with positive refractive power, an eighth fixed lens a8 with positive refractive power, a ninth fixed lens a9 with negative refractive power and a tenth fixed lens a10 with positive refractive power in order from the object side to the image side, and the eighth fixed lens a8 and the ninth fixed lens a9 are cemented.

[0118] The focusing lens group G6 is composed of a first focusing lens c1 with negative refractive power, a second focusing lens c2 with positive refractive power, a third focusing lens c3 with negative refractive power and a fourth focusing lens c4 with positive refractive power in order from the object side to the image side, and the second focusing lens c2, the third focusing lens c3 and the fourth focusing lens c4 are cemented into a three-cemented lens.

[0119] The auxiliary assembly G7 is a protective glass CG.

[0120] The basic lens data of the unmanned aerial vehicle zoom lens of the present embodiment is shown in Table 4, the variable parameters in Table 4 are shown in Table 5, and the aspheric surface coefficients are shown in Table 6.

[0121] In the surface number column, the surface number is shown when the surface on the object side is set as the first surface and the number is increased one by one as it goes toward the image side; in the surface type column, the surface type of a certain lens is shown; in the radius of curvature column, the radius of curvature of a certain lens is shown, and the positive radius of curvature indicates that the surface is curved toward the object side, and the negative radius of curvature indicates that the surface is curved toward the image side; in the center thickness column, the surface spacing on the optical axis of each surface and the surface on its image side is shown; in the refractive index column, the refractive index of a certain lens is shown; and in the Abbe number column, the Abbe number of a certain lens is shown.

[0122] In Table 5, the specific values of each variable parameter when the unmanned aerial vehicle zoom lens is in the wide-angle end state are shown in the WIDE column, and the specific values of each variable parameter when the unmanned aerial vehicle zoom lens is in the telephoto end state are shown in the TELE column.

[0123] In Table 6, K is the conic coefficient, e is the scientific notation number, for example, e-005 represents 10-5 .

[0124] Table 4

[0125]

[0126]

[0127] Table 5

[0128] WIDE TELE D1 1.1 15.5 D2 15.48 1.08 D3 3.4 10.5 D4 7.4 0.3 D5 16.6 0.3 D6 2.5 18.8

[0129] Table 6

[0130]

[0131] In this embodiment, TTL = 90.02 mm, fw = 34.3 mm, ft = 171.5 mm, fno = 2.61-6.69, ft / fw = 5, TTL / ft = 0.52;

[0132] wherein TTL is the total optical length of the unmanned aerial vehicle zoom lens, ft is the focal length of the unmanned aerial vehicle zoom lens in a telephoto state, fw is the focal length of the unmanned aerial vehicle zoom lens in a wide-angle state, and fno is the aperture number of the unmanned aerial vehicle zoom lens.

[0133] XG2 = 14.4 mm, XG2 / TTL = 0.16;

[0134] XG2 is the maximum movement distance of the first variable magnification lens group G2.

[0135] XG6 = 16.3 mm, XG6 / TTL = 0.18;

[0136] XG6 is the maximum movement distance of the focusing lens group G6.

[0137] Embodiment 5

[0138] An unmanned aerial vehicle, such as Figure 1 only Figure 10 as shown, comprising the unmanned aerial vehicle zoom lens as described in any of the above embodiments, and an imaging element configured to receive an image formed by the unmanned aerial vehicle zoom lens.

[0139] It should be noted that the above embodiments can be freely combined as needed. The above description is only the preferred embodiments of the present application, and it should be noted that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can also be considered within the scope of the present application.

Claims

1. A zoom lens for unmanned aerial vehicles, characterized in that, The drone zoom lens consists of, from the object plane side to the image plane side, a first fixed lens group with positive optical power, a first zoom lens group with negative optical power, a second fixed lens group with positive optical power, an aperture stop, a second zoom lens group with negative optical power, a third fixed lens group with positive optical power, and a focusing lens group with negative optical power. The first zoom lens group, the second zoom lens group, and the focusing lens group move along the main optical axis of the UAV zoom lens; The first fixed lens group consists of a first fixed lens with positive optical power, a second fixed lens with negative optical power, and a third fixed lens with positive optical power, arranged sequentially from the object plane side to the image plane side. The second fixed lens and the third fixed lens are cemented together. The third fixed lens group consists of a seventh fixed lens with positive optical power, an eighth fixed lens with positive optical power, a ninth fixed lens with negative optical power, and a tenth fixed lens with positive optical power, from the object plane side to the image plane side. The eighth fixed lens and the ninth fixed lens are cemented together. The first zoom lens group consists of a first zoom lens with negative optical power and a second zoom lens with negative optical power, sequentially from the object plane side to the image plane side. The second zoom lens group consists of a third zoom lens with negative optical power and a fourth zoom lens with positive optical power, arranged sequentially from the object plane side to the image plane side. The third zoom lens and the fourth zoom lens are cemented together. The focusing lens group consists of a first focusing lens with negative optical power, a second focusing lens with positive optical power, a third focusing lens with negative optical power, and a fourth focusing lens with positive optical power, arranged sequentially from the object plane side to the image plane side. The second focusing lens, the third focusing lens, and the fourth focusing lens are cemented together to form a cemented triplet lens. The zoom lens of the drone satisfies the following condition: TTL / ft < 0.8; Wherein, TTL is the total optical length of the drone zoom lens, and ft is the focal length of the drone zoom lens in telephoto mode.

2. The zoom lens for a drone according to claim 1, characterized in that: The second fixed lens group consists of a fourth fixed lens with positive optical power, a fifth fixed lens with positive optical power, and a sixth fixed lens with positive optical power, from the object plane side to the image plane side, with the fifth fixed lens and the sixth fixed lens cemented together. or The second fixed lens group consists of a fourth fixed lens with positive optical power and a fifth fixed lens with positive optical power, sequentially from the object plane side to the image plane side.

3. The zoom lens for a drone according to claim 1, characterized in that: The zoom lens of the drone satisfies the following condition: TTL < 95mm; ft>145mm.

4. A zoom lens for a drone according to claim 1, characterized in that: The zoom lens of the drone satisfies the following condition: ft / fw > 4; Where fw is the focal length of the drone's zoom lens in wide-angle mode.

5. A zoom lens for a drone according to claim 1, characterized in that: The zoom lens of the drone satisfies the following condition: 0.15 < XG2 / TTL < 0.25; XG2 is the maximum moving distance of the first zoom lens group.

6. A zoom lens for a drone according to claim 1, characterized in that: The zoom lens of the drone satisfies the following condition: XG6 / TTL > 0.15; XG6 is the maximum moving distance of the focusing lens group.

7. A drone, characterized in that, include: The drone zoom lens as described in any one of claims 1 to 6; An imaging element is configured to receive an image formed by the zoom lens of the drone.

Images