Full-glass lens applied to field of unmanned aerial vehicles and matched with heating system for rapid deicing and demisting
By designing a full glass lens and combining a heating system, the problems of low clarity and easy damage in extreme weather are solved, achieving high transparency, strong weather resistance and rapid deicing and fogging effects, ensuring clear shooting degree and lens stability.
Patent Information
- Application Number
- CN202323484440.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-20
AI Technical Summary
Traditional drone lenses have low picture clarity and are prone to damage in extreme weather, and the surface of the lens is prone to icing, fogging, and frost, resulting in performance impacts.
Design a full glass lens, including multiple lenses and heating systems, the lens surface is coated with a BBAR film, a heating metal sheet is installed in the lens barrel, a clamp ring and heat dissipation teeth are installed between the lenses, a seal between the lens barrel and the lens cap, and a lens Spherical design is adopted for improved transparency and UV resistance.
It achieves high transparency, strong weather resistance, and resistance to ultraviolet rays. It can quickly deicine and defog, ensure shooting clarity and reduce stray light, and improve the stability and service life of the lens.
Smart Images
Figure CN222145380U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a lens, in particular to an all-glass lens which has a simple structure, high imaging quality, can effectively take the most realistic photos, is applied to the field of unmanned aerial vehicles and is equipped with a heating system for rapid deicing and defogging. Background Art
[0002] With the continuous development of drone technology, drones have been widely used in various fields, such as aerial photography, agriculture, construction, environmental monitoring, etc. In drone applications, perception technologies such as video and thermal imaging are one of the keys to realizing various applications. However, during the flight of drones, due to changes in environmental conditions and the influence of various factors, the drone's camera equipment may be affected by severe weather such as haze, rain, snow, and freezing, resulting in unclear images or failure to shoot.
[0003] In order to solve this problem, some drone manufacturers have begun to develop all-glass lenses, which can effectively reduce the impact of bad weather on camera equipment. At the same time, with a heating system, the all-glass lens can quickly defrost and de-ice to ensure the clarity of the shooting. This all-glass lens has the advantages of high transparency, strong weather resistance, UV resistance, and fast de-icing and de-fogging, which can effectively improve the shooting effect and application range of drones. Therefore, it is necessary to develop a lens with high transparency, strong weather resistance, and fast de-icing and de-fogging.
[0004] Disadvantages of traditional technology:
[0005] Drone footage made with traditional technology has low image clarity in extreme weather conditions
[0006] Lenses manufactured using traditional technology have low strength and are easily damaged when used under relatively harsh conditions.
[0007] The reasons for the above shortcomings are:
[0008] (1) Under extreme climate conditions, ice, fog, and frost may form on the lens surface, which may have a serious impact on the performance of the entire lens.
[0009] (2) Plastic lenses have poor environmental durability and imaging stability, and image quality will deteriorate if used for a long time in extreme environments. Utility Model Content
[0010] In view of the above problems, the main purpose of the utility model is to provide an all-glass lens with a simple structure, high imaging quality, and the ability to effectively take the most realistic photos, which can be used in the field of drones and is equipped with a heating system for rapid deicing and defogging.
[0011] The utility model solves the above technical problems through the following technical solutions: an all-glass lens used in the field of unmanned aerial vehicles for rapid deicing and defogging with a heating system, the all-glass lens used in the field of unmanned aerial vehicles for rapid deicing and defogging with a heating system comprises: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, an aperture surface, a lens barrel, a lens cap, a seventh lens, an eighth lens, and a ninth lens, and from the object space to the image plane of the lens, they are: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, an aperture surface, a sixth lens, a seventh lens, an eighth lens, and a ninth lens in order; the ninth lens is a chip protection glass, and the outside of the image plane of the chip protection glass is an imaging surface.
[0012] A first clamping ring is provided between the first lens and the lens barrel, a second clamping ring is provided between the second lens and the third lens, a third clamping ring is provided between the fifth lens and the lens barrel, a fourth clamping ring is provided between the sixth lens and the seventh lens, and a fifth clamping ring is provided in the lens barrel to clamp the eighth lens in the lens barrel.
[0013] The upper and lower circles of the image surface of the seventh lens are provided with steps close to the lens barrel, and the sixth clamping ring is provided in the steps.
[0014] The lens barrel portion between the fifth lens and the sixth lens is provided with a first lens barrel protrusion, and the fifth lens is clamped between the fourth lens and the first lens barrel protrusion.
[0015] The second clamping ring is provided with second clamping ring heat dissipation teeth, and the fourth clamping ring is provided with fourth clamping ring heat dissipation teeth; the second clamping ring is provided with a second clamping ring protrusion for clamping the fourth lens.
[0016] A heating metal sheet is attached to the lens barrel, a lens cap barb is arranged on the lens cap, and a slope surface matching with the lens cap barb is arranged on the first lens; a first sealing ring is arranged between the lens barrel and the lens cap, and a second sealing ring is arranged between the lens barrel and the fifth clamping ring.
[0017] The image surfaces and object surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, and the ninth lens are all lenses coated with BBAR film.
[0018] In a specific implementation example of the present invention, the object surface of the first lens is a spherical surface with a curvature radius of 26.434 mm, and the center thickness of the first lens is 0.80 mm; the image surface of the first lens is a spherical surface with a curvature radius of 5.551 mm, and the distance between the image surface of the first lens and the central vertex of the object surface of the second lens is 4.397 mm.
[0019] In a specific implementation example of the present invention, the object surface of the second lens is a spherical surface with a curvature radius of -11.983 mm, and the center thickness of the second lens is 0.5 mm; the image surface of the second lens is a spherical surface with a curvature radius of 11.983 mm, and the distance between the image surface of the second lens and the center vertex of the object surface of the third lens is 0.704 mm.
[0020] In a specific implementation example of the present utility model, the object surface of the third lens is a spherical surface with a curvature radius of 32.206 mm, and the center thickness of the third lens is 2.157 mm; the image surface of the third lens is a spherical surface with a curvature radius of -18.177 mm, and the distance between the image surface of the third lens and the central vertex of the object surface of the fourth lens is 3.904 mm.
[0021] In a specific implementation example of the present utility model, the object surface of the fourth lens is a spherical surface with a curvature radius of 23.602 mm, and the center thickness of the fourth lens is 3.663 mm; the image surface of the fourth lens is a spherical surface with a curvature radius of 6.218 mm, and the distance between the image surface of the fourth lens and the central vertex of the object surface of the fifth lens is 0 mm.
[0022] In a specific implementation example of the present utility model, the object surface of the fifth lens is a spherical surface with a curvature radius of 6.218 mm, and the center thickness of the fifth lens is 2.423 mm; the image surface of the fifth lens is a spherical surface with a curvature radius of -33.079 mm, the distance between the image surface of the fifth lens and the aperture surface is 0.223 mm, and the distance between the aperture surface and the center vertex of the object surface of the sixth lens is 0.970 mm.
[0023] In a specific implementation example of the present utility model, the object surface of the sixth lens is a spherical surface with a curvature radius of 15.482 mm, and the center thickness of the sixth lens is 2.636 mm; the image surface of the sixth lens is a spherical surface with a curvature radius of -15.482 mm, and the distance between the image surface of the sixth lens and the central vertex of the object surface of the seventh lens is 5.603 mm.
[0024] In a specific implementation example of the present utility model, the object surface of the seventh lens is a spherical surface with a curvature radius of 11.323 mm, and the center thickness of the seventh lens is 2.645 mm; the image surface of the seventh lens is a spherical surface with a curvature radius of -25.288 mm, and the distance between the image surface of the seventh lens and the central vertex of the object surface of the eighth lens is 0.674 mm.
[0025] In a specific implementation example of the present utility model, the object surface of the eighth lens is a spherical surface with a curvature radius of -9.797 mm, and the center thickness of the eighth lens is 0.400 mm; the image surface of the eighth lens is a spherical surface with a curvature radius of -84.133 mm, and the distance between the image surface of the eighth lens and the central vertex of the object surface of the seventh and ninth lenses is 2.266 mm.
[0026] In a specific implementation example of the present utility model, the object surface and the phase surface of the ninth lens are both spherical surfaces, and the center thickness of the ninth lens is 0.3000 mm.
[0027] The positive progress of the utility model is that the all-glass lens provided by the utility model for use in the field of unmanned aerial vehicles with a heating system for rapid deicing and defogging has the following advantages:
[0028] 1. High transparency: The all-glass lens has high transparency and can ensure the clarity of the video.
[0029] 2. Strong weather resistance: All-glass lenses are not easily affected by weather, such as haze, rain, snow and other bad weather.
[0030] 3. Anti-ultraviolet: The all-glass lens has good resistance to ultraviolet rays and can protect the inside of the camera from damage by ultraviolet rays.
[0031] 4. Rapid deicing and defogging: With the heating system, the all-glass lens can quickly remove ice and fog on the surface of the camera to ensure the clarity of the shooting.
[0032] 5. The lens of the present invention is partially coated with a BBAR film on its surface to reduce reflected light, which absorbs and disperses the stray light generated inside the lens to a great extent, thereby greatly reducing the stray light energy on the image plane.
[0033] 6. In the optical design process, the utility model comprehensively considers increasing the number of lenses, adjusting the arrangement, optimizing the shape and material, and using a full glass lens to ensure the stability of the lens. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0035] Figure 2 This is a schematic diagram of the imaging light path of the utility model.
[0036] The following are the names corresponding to the label numbers in this utility model:
[0037] The first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, the seventh lens 7, the eighth lens 8, and the ninth lens 9, the aperture surface 10, the first clamping ring 11, the second clamping ring 12, the third clamping ring 13, the fourth clamping ring 14, the fifth clamping ring 15, the lens cap 16, the lens barrel 17, the heating material 18, the lens cap barb 19, the slope surface 20, the first sealing ring 21, the second sealing ring 22, the sixth clamping ring 23, the second clamping ring heat dissipation teeth 121, the second clamping ring protrusion 122, the fourth clamping ring heat dissipation teeth 141, and the first lens barrel protrusion 171. DETAILED DESCRIPTION
[0038] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to illustrate the technical solution of the present invention in detail.
[0039] Figure 1 It is a schematic diagram of the overall structure of the utility model. Figure 2 Schematic diagram of the imaging optical path of the utility model, such as Figure 1 and 2 As shown, the utility model provides an all-glass lens for rapid deicing and defogging in the field of unmanned aerial vehicles with a heating system. The all-glass lens for rapid deicing and defogging in the field of unmanned aerial vehicles with a heating system comprises: a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, an aperture surface 10, a lens barrel 17, a lens cap 16, a seventh lens 7, an eighth lens 8, and a ninth lens 9. From the object space to the image plane of the lens, they are: a first lens, a second lens, a third lens, a fourth lens 4, a fifth lens 5, an aperture surface 10, a sixth lens 6, a seventh lens 7, an eighth lens 8, and a ninth lens 9; the ninth lens 9 is a chip protection glass, and the outside of the image plane of the chip protection glass is an imaging surface.
[0040] A first clamping ring 11 is provided between the first lens 1 and the lens barrel 17, a second clamping ring 12 is provided between the second lens 2 and the third lens 3, a third clamping ring 13 is provided between the fifth lens 5 and the lens barrel 17, a fourth clamping ring 14 is provided between the sixth lens 6 and the seventh lens 7, a fifth clamping ring 15 is provided in the lens barrel 17 for clamping the eighth lens 8 in the lens barrel 17, and steps are provided on the upper and lower circles of the image surface of the seventh lens 7 near the lens barrel 17, and a sixth clamping ring 23 is provided in the step.
[0041] The portion of the lens barrel 17 between the fifth lens 5 and the sixth lens 6 is provided with a first lens barrel protrusion 171 , and the fifth lens 5 is clamped between the fourth lens 4 and the first lens barrel protrusion 171 .
[0042] The second clamping ring 12 is provided with second clamping ring heat dissipation teeth 121 , and the fourth clamping ring 14 is provided with fourth clamping ring heat dissipation teeth 141 ; the second clamping ring 12 is provided with a second clamping ring protrusion 122 for clamping the fourth lens 4 .
[0043] A heating material 18 is pasted on the lens barrel 17, a lens cap barb 19 is provided on the lens cap 16, and a slope surface 20 that cooperates with the lens cap barb 19 is provided on the first lens 1; a first sealing ring 21 is provided between the lens barrel 17 and the lens cap 16, and a second sealing ring 22 is provided between the lens barrel 17 and the fifth clamping ring 15.
[0044] In the specific implementation process of the present invention, the image surface and the object surface of the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6, the seventh lens 7, the eighth lens 8, and the ninth lens 9 are lenses coated with BBAR film.
[0045] In the specific implementation process of the utility model, the heating material is a heatable metal sheet with solid glue attached to one side of the metal sheet. When installing, it is only necessary to bend the metal sheet into the cylindrical shape of the lens barrel, tear off the film on the solid glue, and stick the metal sheet on the lens barrel. The other end of the heating material is connected to an external heating source.
[0046] The following is a specific implementation example: in the following text description and table, lens 1 is the first lens, lens 2 is the second lens, lens 3 is the third lens, lens 4 is the fourth lens, lens 5 is the fifth lens, lens 6 is the sixth lens 6, lens 7 is the seventh lens 7, lens 8 is the eighth lens 8, and lens 9 is the ninth lens 9.
[0047] The detailed parameters of the design are listed in Table 1. The first row lists the main parameters of the lens: focal length f = 4.09275mm, aperture F / # = 1.6, total optical track length: TTL = 34.7375mm.
[0048] The headings of Table 1 list: "Surface", "Type", "Radius of Curvature", "Thickness", "Refractive Index" and "Abbe Number". The lens element material is defined by the refractive index and the Abbe number. In Table 1, a blank cell in the "Refractive Index" column indicates that the value in the adjacent "Thickness" cell is the distance to the next lens surface vertex. The "Refractive Index" column provides the refractive index of the lens material at a wavelength of 632.8nm.
[0049] In Table 1, the radius of curvature of the object surface is infinite, that is, a plane, and is infinitely far from the center vertex of the next surface (object surface of lens 1).
[0050] Surface 1 is the object surface of lens 1, which is a spherical surface with a curvature radius of 26.434 mm. It is 0.80 mm away from the central vertex of the next surface (image surface of lens 1), that is, the central thickness of lens 1 is 0.80 mm, the refractive index is 1.729164, and the Abbe coefficient is 54.669031.
[0051] Surface 2 is the image surface of lens 1. This surface is a spherical surface with a curvature radius of 5.551 mm and is 4.397 mm away from the next surface (object surface of lens 2).
[0052] Surface 3 is the object surface of lens 2, which is a spherical surface with a curvature radius of -11.983mm. It is 0.5mm away from the central vertex of the next surface (image surface of lens 2), that is, the central thickness of lens 2 is 0.5mm, the refractive index is 1.620412, and the Abbe coefficient is 60.373876.
[0053] Surface 4 is the image surface of lens 2, which is a spherical surface with a radius of curvature of 11.983 mm and a distance of 0.704 mm from the next surface (object surface of lens 3).
[0054] Surface 5 is the object surface of lens 3, which is a spherical surface with a curvature radius of 32.206 mm. The center vertex of this surface is 2.157 mm away from the center vertex of the next surface (image surface of lens 3), that is, the center thickness of lens 3 is 2.157 mm, the refractive index is 2.000689, and the Abbe coefficient is 25.435062.
[0055] Surface 6 is the image surface of lens 3, which is a spherical surface with a curvature radius of -18.177 mm and a distance of 3.904 mm from the next surface (object surface of lens 4).
[0056] Surface 7 is the object surface of lens 4, which is a spherical surface with a curvature radius of 23.602 mm. The center vertex of this surface is 3.663 mm away from the center vertex of the next surface (image surface of lens 4), that is, the center thickness of lens 4 is 3.663 mm, the refractive index is 1.922866, and the Abbe coefficient is 20.882149.
[0057] Surface 8 is the image plane of lens 4. Since the distance between this surface and the object plane of lens 5 is 0 and the surface curvature radius is the same, surface 8 is both the image plane of lens 4 and the object plane of lens 5. This surface is a spherical surface with a curvature radius of 6.218mm and a distance of 2.423mm from the next surface (image plane of lens 5), that is, the center thickness of lens 5 is 2.423mm, the refractive index is 1.592824, and the Abbe coefficient is 68.624378.
[0058] Surface 9 is the image surface of lens 5, which is a spherical surface with a curvature radius of -33.079 mm and a distance of 0.223 mm from the next surface (aperture surface).
[0059] Surface 10 is the aperture surface, which is a virtual surface with an infinite radius of curvature and a distance of 0.970 mm from the center vertex of the next lens surface (object plane of lens 6).
[0060] Surface 11 is the object surface of lens 6; this surface is a spherical surface with a radius of curvature of 15.482 mm and a distance of 2.636 mm from the center vertex of the next surface (image surface of lens 6); that is, the center thickness of lens 6 is 2.636 mm, the refractive index is 1.834810, and the Abbe coefficient is 42.727483.
[0061] Surface 12 is the image surface of lens 6; this surface is a spherical surface with a radius of curvature of -15.482 mm and a distance of 5.603 mm from the central vertex of the next surface (object surface of lens 7).
[0062] Surface 13 is the object surface of lens 7; this surface is a spherical surface with a curvature radius of 11.323 mm and a distance from the center vertex of the next surface (image surface of lens 7) of 2.645 mm; that is, the center thickness of lens 7 is 2.645 mm, the refractive index is 1.755002, and the Abbe coefficient is 52.329298.
[0063] Surface 14 is the image surface of lens 7; this surface is a spherical surface with a curvature radius of -25.288 mm and a distance of 0.674 mm from the central vertex of the next surface (object surface of lens 8).
[0064] Surface 15 is the object surface of lens 8; this surface is a spherical surface with a curvature radius of -9.797 mm and a distance of 0.400 mm from the center vertex of the next surface (image surface of lens 8); that is, the center thickness of lens 8 is 0.400 mm, the refractive index is 1.945958, and the Abbe coefficient is 17.943914.
[0065] Surface 16 is the image surface of lens 8; this surface is a spherical surface with a radius of curvature of -84.133 mm and a distance of 2.266 mm from the central vertex of the next surface (protective glass object surface).
[0066] Surface 17 is the object surface of the chip protection glass, which is a plane with an infinite radius of curvature and is 0.3000 mm away from the next surface (image surface of the protection glass), that is, the chip protection glass is 0.3000 mm thick, has a refractive index of 1.516797, and an Abbe coefficient of 64.2124.
[0067] Surface 18 is the chip protection glass image plane, which is a plane with an infinite radius of curvature and is 0.581 mm away from the next surface (image plane).
[0068] Surface 19 is the lens imaging surface.
[0069]
[0070] The resolution of this optical design is measured using the HR machine:
[0071] Test frequency 120Lp / mm
[0072] First circle: Center (0°) ≥ 50
[0073] Second circle: (Ф7)≥35.
[0074] The design features of the lens provided by the utility model are as follows:
[0075] 1. High transparency: The all-glass lens has high transparency and can ensure the clarity of the video.
[0076] 2. Strong weather resistance: All-glass lenses are not easily affected by weather, such as haze, rain, snow and other bad weather.
[0077] 3. Anti-ultraviolet: The all-glass lens has good resistance to ultraviolet rays and can protect the inside of the camera from damage by ultraviolet rays.
[0078] 4. Rapid deicing and defogging: With the heating system, the all-glass lens can quickly remove ice and fog on the surface of the camera to ensure the clarity of the shooting.
[0079] 5. The lens of the present invention is partially coated with a BBAR film on its surface to reduce reflected light, which absorbs and disperses the stray light generated inside the lens to a great extent, thereby greatly reducing the stray light energy on the image plane.
[0080] 6. In the optical design process, the utility model comprehensively considers increasing the number of lenses, adjusting the arrangement, optimizing the shape and material, and using a full glass lens to ensure the stability of the lens.
[0081] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. An all-glass lens used in the field of drones and equipped with a heating system for rapid deicing and defogging, characterized by: The all-glass lens used in the field of unmanned aerial vehicles and equipped with a heating system for rapid deicing and defogging comprises: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, an aperture surface, a lens barrel, a lens cap, a seventh lens, an eighth lens, and a ninth lens, which are arranged from the object space to the image plane of the lens in the following order: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, an aperture surface, a sixth lens, a seventh lens, an eighth lens, and a ninth lens; the ninth lens is a chip protection glass, and the outside of the image plane of the chip protection glass is an imaging surface; A first clamping ring is provided between the first lens and the lens barrel, a second clamping ring is provided between the second lens and the third lens, a third clamping ring is provided between the fifth lens and the lens barrel, a fourth clamping ring is provided between the sixth lens and the seventh lens, and a fifth clamping ring is provided in the lens barrel to clamp the eighth lens in the lens barrel; The upper and lower circles of the image surface of the seventh lens are provided with steps near the lens barrel, and the sixth clamping ring is provided in the steps; The lens barrel portion between the fifth lens and the sixth lens is provided with a first lens barrel protrusion, and the fifth lens is clamped between the fourth lens and the first lens barrel protrusion; The second clamping ring is provided with a second clamping ring heat dissipation tooth, and the fourth clamping ring is provided with a fourth clamping ring heat dissipation tooth; the second clamping ring is provided with a second clamping ring protrusion for clamping the fourth lens, A heating metal sheet is attached to the lens barrel, a lens cap barb is provided on the lens cap, and a slope surface matching with the lens cap barb is provided on the first lens; a first sealing ring is provided between the lens barrel and the lens cap, and a second sealing ring is provided between the lens barrel and the fifth clamping ring; The image surfaces and object surfaces of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, and the ninth lens are all lenses coated with BBAR film.
2. The all-glass lens for rapid deicing and defogging with a heating system for use in the field of unmanned aerial vehicles according to claim 1, characterized in that: The object surface of the first lens is a spherical surface with a curvature radius of 26.434 mm, and the center thickness of the first lens is 0.80 mm; the image surface of the first lens is a spherical surface with a curvature radius of 5.551 mm, and the distance between the image surface of the first lens and the central vertex of the object surface of the second lens is 4.397 mm.
3. The all-glass lens for rapid deicing and defogging with a heating system for use in the field of unmanned aerial vehicles according to claim 1, characterized in that: The object surface of the second lens is a spherical surface with a curvature radius of -11.983 mm, and the center thickness of the second lens is 0.5 mm; the image surface of the second lens is a spherical surface with a curvature radius of 11.983 mm, and the distance between the image surface of the second lens and the center vertex of the object surface of the third lens is 0.704 mm.
4. The all-glass lens for rapid deicing and defogging with a heating system for use in the field of unmanned aerial vehicles according to claim 1, characterized in that: The object surface of the third lens is a spherical surface with a curvature radius of 32.206 mm, and the center thickness of the third lens is 2.157 mm; the image surface of the third lens is a spherical surface with a curvature radius of -18.177 mm, and the distance between the image surface of the third lens and the center vertex of the object surface of the fourth lens is 3.904 mm.
5. The all-glass lens for rapid deicing and defogging with a heating system for use in the field of unmanned aerial vehicles according to claim 1, characterized in that: The object surface of the fourth lens is a spherical surface with a curvature radius of 23.602 mm, and the center thickness of the fourth lens is 3.663 mm; the image surface of the fourth lens is a spherical surface with a curvature radius of 6.218 mm, and the distance between the image surface of the fourth lens and the central vertex of the object surface of the fifth lens is 0 mm.
6. The all-glass lens for rapid deicing and defogging with a heating system for use in the field of unmanned aerial vehicles according to claim 1, characterized in that: The object surface of the fifth lens is a spherical surface with a curvature radius of 6.218 mm, and the center thickness of the fifth lens is 2.423 mm; the image surface of the fifth lens is a spherical surface with a curvature radius of -33.079 mm, the distance between the image surface of the fifth lens and the aperture surface is 0.223 mm, and the distance between the aperture surface and the center vertex of the object surface of the sixth lens is 0.970 mm.
7. The all-glass lens for rapid deicing and defogging with a heating system for use in the field of unmanned aerial vehicles according to claim 1, characterized in that: The object surface of the sixth lens is a spherical surface with a curvature radius of 15.482 mm, and the center thickness of the sixth lens is 2.636 mm; the image surface of the sixth lens is a spherical surface with a curvature radius of -15.482 mm, and the distance between the image surface of the sixth lens and the central vertex of the object surface of the seventh lens is 5.603 mm.
8. The all-glass lens for rapid deicing and defogging with a heating system for use in the field of unmanned aerial vehicles according to claim 1, characterized in that: The object surface of the seventh lens is a spherical surface with a curvature radius of 11.323 mm, and the center thickness of the seventh lens is 2.645 mm; the image surface of the seventh lens is a spherical surface with a curvature radius of -25.288 mm, and the distance between the image surface of the seventh lens and the central vertex of the object surface of the eighth lens is 0.674 mm.
9. The all-glass lens for rapid deicing and defogging with a heating system for use in the field of unmanned aerial vehicles according to claim 1, characterized in that: The object surface of the eighth lens is a spherical surface with a curvature radius of -9.797 mm, and the center thickness of the eighth lens is 0.400 mm; the image surface of the eighth lens is a spherical surface with a curvature radius of -84.133 mm, and the distance between the image surface of the eighth lens and the central vertex of the object surface of the seventh and ninth lenses is 2.266 mm.
10. The all-glass lens for rapid deicing and defogging with a heating system used in the field of unmanned aerial vehicles according to claim 1, characterized in that: The object surface and the phase surface of the ninth lens are both spherical surfaces, and the center thickness of the ninth lens is 0.3000 mm.