Lens protection structure and shooting equipment

Abstract

The utility model relates to a lens protection structure and shooting equipment, and relates to the technical field of camera shooting, the lens protection structure is mounted on a lens of the shooting equipment, the lens protection structure comprises a mounting rack and a plurality of lenses stacked on the mounting rack, and the plurality of lenses comprise at least one non-curved lens and at least one curved lens. Along the optical axis direction of the lens, two adjacent lenses and the mounting rack are enclosed to form a sealed cavity. According to the invention, the plurality of lenses are arranged on the mounting rack, and the two adjacent lenses and the mounting rack define the sealed cavity, so that no matter in any shooting environment, when light enters the sealed cavity from the external environment and then enters the lens from the sealed cavity, a medium in the sealed cavity is not changed all the time; therefore, the refraction parameter of the light entering the lens from the sealed cavity is not changed, so that the ambient light can accurately enter the lens, and the shooting equipment can clearly image in any scene.

Description

Technical Field

[0001] The present invention relates to the field of camera technology, and in particular to a lens protection structure and a shooting device. Background Art

[0002] A camera is an electronic device that uses the principle of optical imaging to record images. People can use cameras to record their lives. Among them, the camera lens plays a vital role in imaging. The lens is the device exposed to the outside of the camera, and usually a protective lens needs to be installed to protect the lens.

[0003] In the related art, a single-layer curved protective mirror is usually used to protect the camera lens. The single-layer curved protective mirror is applicable to a small number of scenarios and leads to poor camera imaging quality in some scenarios. For example, when a user uses a camera to take pictures in an atmospheric environment, both sides of the curved protective mirror facing the lens and away from the lens are air, which can ensure that the ambient light is accurately incident on the lens after passing through the curved protective mirror. However, when the user uses the camera underwater, the side of the curved protective mirror away from the lens changes from air to water. The change in transmission medium causes the refraction angle of ambient light when entering the curved protective mirror to change, resulting in a change in the optical path of the ambient light in the curved protective mirror, which in turn causes the ambient light to be unable to accurately reach the lens after being emitted from the curved protective mirror, causing the camera to have blurred imaging.

[0004] In the related art, some lens protection structures use a single-layer flat lens as a protective lens. Compared with the solution of setting a single-layer curved lens, in order to ensure that the camera's lens viewing angle is not blocked, a larger flat lens needs to be set, which in turn causes the lens protection structure to have a larger size. It is understandable that a larger lens protection structure causes the camera to be less aesthetically pleasing and also affects the holding experience.

[0005] It can be seen from the above that the protective lens in the related art cannot simultaneously meet the requirements of multi-scene use and aesthetics. Utility Model Content

[0006] In order to overcome the problems existing in the related art, the present disclosure provides a lens protection structure and a shooting device.

[0007] According to an embodiment of the present disclosure, a lens protection structure is provided, which is installed on a lens of a shooting device, and the lens protection structure includes:

[0008] A mounting frame mounted on the lens;

[0009] A plurality of lenses are stacked on the mounting frame, wherein the plurality of lenses include at least one non-curved lens and at least one curved lens. Along the optical axis direction of the lens, two adjacent lenses and the mounting frame are enclosed to form a sealed cavity.

[0010] In some embodiments, the plurality of lenses includes a non-curved lens and a curved lens.

[0011] In some embodiments, when the lens protection structure is installed on the lens, along the optical axis direction of the lens, the lens closest to the lens among the multiple lenses is set as the curved lens, and the lens farthest from the lens among the multiple lenses is set as the non-curved lens.

[0012] In some embodiments, the sealed cavity has a gas filling, and the gas filling includes air; or,

[0013] The gas filling includes any one or more of nitrogen, helium or argon.

[0014] In some embodiments, the mounting frame is cylindrical, and mounting steps are provided along the circumferential direction of the mounting frame, and the lens is mounted on the mounting steps.

[0015] In some embodiments, the mounting step is provided with a first sealing groove, the first sealing groove has a sealing adhesive layer, and the lens is bonded and connected to the mounting frame through the sealing adhesive layer.

[0016] In some embodiments, a second sealing groove is provided on the end surface where the mounting frame is connected to the lens, and an annular sealing ring is provided in the second sealing groove.

[0017] In some embodiments, the lens protection structure is detachably connected to the lens.

[0018] In some embodiments, the lens protection structure is connected to the lens by at least one of a threaded connection, a magnetic connection, or a snap connection.

[0019] According to a second aspect of the present disclosure, a photographing device is provided, comprising a lens, and a lens protection structure as described in the first aspect, wherein the lens protection structure is connected to the lens.

[0020] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: a plurality of lenses are arranged on the mounting frame, and two adjacent lenses and the mounting frame are enclosed to form a sealed cavity. No matter what shooting environment is under, when light is incident from the external environment into the sealed cavity and then from the sealed cavity into the lens, since the medium in the sealed cavity does not change at all, the refraction parameters of the light when entering the lens from the sealed cavity remain unchanged, so that the ambient light can be accurately incident on the lens, so that the shooting device can clearly image in any scene.

[0021] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] Figure 1 is a schematic diagram of a photographing device according to an exemplary embodiment.

[0024] Figure 2 is an exploded diagram of a photographing device according to an exemplary embodiment.

[0025] Figure 3 yes Figure 1 Cross-sectional view along the AA direction.

[0026] Figure 4 is a cross-sectional view of a lens protection structure according to an exemplary embodiment.

[0027] Reference numerals:

[0028] 100. Lens protection structure;

[0029] 10. Mounting frame; 11. Mounting step; 111. First step surface; 112. Second step surface; 113. Connecting surface; 12. First sealing groove; 13. Second sealing groove; 14. Annular sealing ring; 15. Third sealing groove;

[0030] 20. Lens; 21. Non-curved lens; 22. Curved lens;

[0031] 30. Sealed cavity; 40. Lens sealed cavity;

[0032] 200. Equipment body;

[0033] 50. Lens; 60. Middle frame. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0035] In the related art, a single-layer curved protective mirror is usually used to provide protection for the camera lens. The lens protection structure made of the curved mirror has the advantage of being small in size, so that the camera still has a high degree of refinement when equipped with the lens protection structure.

[0036] It should be noted that when light is incident obliquely from one medium to another, the propagation direction of the light changes, which is the phenomenon of light refraction. In addition, the refraction angles of light between two media in different combinations are also different. For example, when light is incident obliquely from air to glass, it has a first refraction angle, and when light is incident obliquely from water to glass, it has a second refraction angle. The first refraction angle is not equal to the second refraction angle.

[0037] When the curved protective mirror is manufactured, both sides of it are exposed to air. Therefore, when the user uses the camera to take pictures in the atmosphere, both sides of the curved protective mirror are exposed to the atmosphere, and the ambient light can accurately enter the lens after passing through the curved protective mirror. However, when the user uses the camera underwater, the side of the curved protective mirror facing away from the lens changes from air to water, causing the optical path of the light inside the curved protective mirror to change, which in turn causes the angle of the ambient light to change when it is emitted, and ultimately it cannot accurately enter the lens, resulting in blurred images.

[0038] In the related art, some lens protection structures use a single-layer flat lens as a protective lens. Compared with the solution of setting a single-layer curved lens, in order to ensure that the camera's lens viewing angle is not blocked, a larger flat lens needs to be set, which leads to a larger lens protection structure. The larger lens protection structure makes the camera less beautiful and also affects the holding experience. In one example, the diameter of the lens protection structure with a single-layer curved protective lens is about 21.7 mm, while the diameter of the lens protection structure with a single-layer flat protective lens needs to reach 23 mm.

[0039] In order to solve the problems existing in the related art, the present disclosure provides a lens protection structure and a shooting device. The lens protection structure is installed on the lens of the shooting device. The lens protection structure includes a mounting frame and a plurality of lenses stacked on the mounting frame. The plurality of lenses include at least one non-curved lens and at least one curved lens. Along the optical axis direction of the lens, two adjacent lenses and the mounting frame are enclosed to form a sealed cavity. In the present disclosure, a plurality of lenses are arranged on the mounting frame, and two adjacent lenses and the mounting frame are enclosed to form a sealed cavity. No matter what shooting environment is, when light is incident from the external environment to the sealed cavity and then from the sealed cavity to the lens, the medium in the sealed cavity will not change, so that the refraction parameters of the light when entering the lens from the sealed cavity remain unchanged, so that the ambient light can be accurately incident on the lens, so that the shooting device can clearly image in any scene.

[0040] According to an exemplary embodiment of the present disclosure, Figures 1 to 3As shown, this embodiment provides a lens protection structure 100, which can be installed at the lens 50 of the shooting device. The lens 50 is a precise and expensive device exposed to the outer surface of the shooting device. The lens 50 is easily damaged when it is impacted. The lens protection structure 100 is installed at the lens 50 to provide protection for the lens 50. Among them, the shooting device is such as a panoramic camera, a sports camera, etc. Taking a panoramic camera as an example, the lens 50 of the panoramic camera usually protrudes from the outer shell to obtain a wider shooting field of view. The protruding lens 50 is more likely to be impacted when the panoramic camera falls, so it is usually necessary to use the lens protection structure 100 to provide protection for the lens 50.

[0041] like Figures 1 to 3 As shown, the lens protection structure 100 includes a mounting frame 10 and a lens 20 (i.e., a protective lens), wherein the mounting frame 10 is used to mount and fix the lens 20 and to form a connection with the lens 50. Figure 1 and Figure 2 The mounting frame 10 is cylindrical and has a hollow area. The lens 20 is arranged in the hollow area of ​​the mounting frame 10. In the assembled state, the hollow area of ​​the mounting frame 10 can be directly opposite to the lens 50 to ensure that ambient light can enter the lens 50 through the hollow area.

[0042] Among them, reference Figure 2 and Figure 3 The lens protection structure 100 includes a plurality of lenses 20, which are stacked on the mounting frame 10. Along the optical axis direction of the lens 50, two adjacent lenses 20 and the mounting frame 10 are enclosed to form a sealed cavity 30. In one example, refer to Figure 2 and Figure 3 , two lenses 20 are arranged in the mounting frame 10, and the two lenses 20 and the mounting frame 10 enclose a sealed cavity 30. In another example (not shown in the drawings), three lenses are arranged in the mounting frame, and the three lenses and the mounting frame enclose two sealed cavities. In another example (not shown in the drawings), four lenses are arranged in the mounting frame, and the four lenses and the mounting frame enclose three sealed cavities. Of course, a larger number of lenses can be installed in the mounting frame 10, which will not be described in detail.

[0043] Regardless of the environment in which the lens 50 protection structure is located, the substance in the sealed cavity 30 remains unchanged. For example, the sealed cavity 30 can be filled with air, which does not limit the technical solution of the present disclosure. The sealed cavity 30 can also be filled with liquid. When the sealed cavity 30 is filled with liquid, the optical parameters of the lens 20 need to be adjusted by using one side of the lens 20 as liquid and the other side as gas.

[0044] In the disclosed embodiment, a plurality of lenses are provided on the mounting frame, and two adjacent lenses and the mounting frame enclose a sealed cavity. No matter in any shooting environment, when light is incident from the sealed cavity to the lens between the sealed cavity and the lens, since the medium in the sealed cavity does not change, the refraction parameter of the light does not change when entering the lens between the sealed cavity and the lens, so that the ambient light can be accurately incident on the lens, so that the shooting equipment can clearly image in any scene.

[0045] In an exemplary embodiment, Figures 1 to 3 As shown, an embodiment of the present disclosure provides a lens protection structure 100, which is installed on a lens 50 of a shooting device. The lens protection structure 100 includes a mounting frame 10 and a plurality of lenses 20. The plurality of lenses 20 are stacked on the mounting frame 10. The plurality of lenses 20 include at least one non-curved lens 21 and at least one curved lens 22. Along the optical axis direction of the lens 50, two adjacent lenses 20 and the mounting frame 10 are enclosed to form a sealed cavity 30.

[0046] In this embodiment, Figure 2 and Figure 3 As shown, the multiple lenses 20 include a non-curved lens 21 and a curved lens 22. It is understandable that at least two lenses 20 are required to enclose and form a sealed cavity 30. Therefore, a non-curved lens 21 and a curved lens 22 can be set in the mounting frame 10, and the non-curved lens 21 and the curved lens 22 are enclosed with the mounting frame 10 to form a sealed cavity 30. Exemplarily, the non-curved lens 21 can be, for example, a flat glass, and the curved lens 22 can be, for example, a spherical lens. In this embodiment, the number of lenses is small, the total thickness of the lenses is small, and the number of lenses enclosed to form the sealed cavity 30 is small, so that the size of the lens protection structure 100 in the optical axis direction of the lens 50 is smaller. When the lens protection structure 100 is installed on the lens 50, the small-sized lens protection structure 100 is not easy to interfere with the external structure, and can also ensure that the shooting device is small in size and has a high degree of refinement in appearance.

[0047] Among them, Figure 2 and Figure 3 As shown, when the lens protection structure 100 is installed on the lens 50, the lens 20 closest to the lens 50 among the multiple lenses 50 is set as a curved lens 22, and the lens 20 farthest from the lens 50 among the multiple lenses 20 is set as a non-curved lens 21. When the use environment of the shooting device changes, the medium on one side of the non-curved lens 21 changes. Since the light deflects very little before and after passing through the non-curved lens 21 when the medium on one side of the non-curved lens 21 changes, therefore, setting the lens 20 farthest from the lens 50 as the non-curved lens 21 can reduce or avoid the quality difference between underwater imaging and above-water imaging of the shooting device.

[0048] In one example, reference Figure 3 , Figure 3 The exemplary embodiment shows that a non-curved lens 21 and a curved lens 22 are provided along the optical axis direction of the lens 50 ( Figure 3 The curved lens 22 is disposed between the non-curved lens 21 and the lens 50 .

[0049] In another example (not shown in the drawings), the plurality of lenses includes at least three lenses, wherein the lens closest to the lens is a curved lens 22 (refer to Figure 3 ), the one farthest from the lens is the non-curved lens 21 (reference Figure 3 ), other lenses are arranged between the aforementioned curved lens 22 and the aforementioned non-curved lens 21, and the type and stacking order of other lenses are not limited. The other lenses can be two non-curved lenses, two curved lenses, or one curved lens and one non-curved lens.

[0050] In some embodiments, Figure 3 As shown, the sealed cavity 30 has a gas filling, such as air, or nitrogen, helium, or argon, etc. This does not limit the technical solution of the present disclosure. Since the ambient light needs to pass through the gas filling in the sealed cavity 30, it is sufficient to ensure that the optical parameters of the gas filling are close to those of air and are non-toxic and harmless.

[0051] In an exemplary embodiment, Figures 1 to 3 As shown, this embodiment provides a lens protection structure 100, which is installed on the lens 50 of the shooting device. The lens protection structure 100 includes a mounting frame 10 and a plurality of lenses 20. The plurality of lenses 20 are stacked on the mounting frame 10. The plurality of lenses 20 include at least one non-curved lens 21 and at least one curved lens 22. Along the optical axis direction of the lens 50, two adjacent lenses 20 and the mounting frame 10 are enclosed to form a sealed cavity 30.

[0052] In this embodiment, Figure 2 and Figure 3 As shown, the mounting frame 10 is cylindrical, and along the axial direction of the mounting frame 10, a plurality of mounting steps 11 are provided on the inner circle of the mounting frame 10, and the number of the mounting steps 11 is greater than or equal to the number of the lenses 20. The lenses 20 are arranged on the mounting steps 11 and form a sealed connection with the mounting steps 11, so that the two lenses 20 and the mounting frame 10 can enclose and form a sealed cavity 30.

[0053] Among them, reference Figure 2The mounting step 11 includes a first step surface 111, a second step surface 112 and a connecting surface 113. The first step surface 111 and the second step surface 112 are connected by the connecting surface 113. The first step surface 111 is used to connect the lens 20 in the thickness direction (i.e., the optical axis direction). Figure 3 The second step surface 112 of the mounting step 11 can be connected to the first step surface 111 of other mounting structures, so that the multiple step structures have different sizes, so that multiple lenses 20 with different diameters can be arranged in the mounting frame 10, for example, the diameter of the lens 20 farther from the lens 50 is larger, so as to avoid the viewing angle of the lens 50 being blocked.

[0054] In one example, reference Figure 2 and Figure 3 The first step surface 111 of the installation step 11 is provided with a first sealing groove 12. The first sealing groove 12 is formed by a concave portion of the surface of the first step surface 111. The first sealing groove 12 can be a 360° full circle or a plurality of arcs arranged at intervals. Figure 2 and Figure 3 The first sealing groove 12 is filled with a sealant (not shown in the drawings), and the sealant forms a sealant layer. The sealant layer has adhesiveness. When the lens 20 is placed on the first step surface 111 of the mounting step 11, the lens 20 can be bonded to the mounting frame 10 through the sealant layer, and can form a seal. The material of the sealant layer is, for example, PP (Polypropylene, polypropylene) glue, PA (Polyamide, polyamide) hot melt glue, etc.

[0055] In another example, refer to Figure 4 The connection surface 113 of the mounting step 11 is provided with a third sealing groove 15, and the third sealing groove 15 is formed by the connection surface 113 (reference Figure 2 ) is recessed radially outward. For example, the third sealing groove 15 may be filled with sealant (not shown in the drawings), and the lens 20 may be fixed to the mounting frame 10 by bonding to form a seal. For another example, a sealing ring (not shown in the drawings) may be provided in the third sealing groove 15. When the lens 20 is not provided in the mounting step 11, the inner ring size of the sealing ring is smaller than the outer ring size of the lens 20. Therefore, when the lens 20 is placed on the mounting step 11, the side wall of the lens 20 may squeeze the sealing ring so that the sealing ring undergoes elastic deformation, so that the lens 20 is fixed to the mounting step 11 by an elastic restoring force. The sealing ring is provided to fix the lens 20 by an elastic restoring force, so that the replacement operation is facilitated when the lens 20 is damaged.

[0056] In yet another example, reference Figure 4The first step surface 111 of the installation step 11 is provided with a first sealing groove 12, the connecting surface 113 is provided with a third sealing groove 15, a sealing rubber layer is provided in the first sealing groove 12, and a sealing ring is provided in the connecting surface 113. The sealing rubber layer and the sealing ring are provided at the same time to improve the sealing performance, so that the shooting equipment has the waterproof performance required when used deeper underwater.

[0057] Among them, Figure 3 As shown, the end surface where the mounting frame 10 is connected to the lens 50 is provided with a second sealing groove 13, and an annular sealing ring 14 is provided in the second sealing groove 13. When the mounting frame 10 and the lens 50 are in an assembled state, the mounting frame 10, the lens 50 and the curved lens 22 closest to the lens 50 enclose a lens sealing cavity 40, and the annular sealing ring 14 is used to separate the lens sealing cavity 40 from the external environment to prevent water from entering the lens sealing cavity 40 when used underwater, thereby preventing the ambient light from changing the optical path due to the change of the transmission medium before entering the lens 50, so as to ensure clear imaging.

[0058] In an exemplary embodiment, Figures 1 to 3 As shown, an embodiment of the present disclosure provides a lens protection structure 100, which is installed on a lens 50 of a shooting device. The lens protection structure 100 includes a mounting frame 10 and a plurality of lenses 20. The plurality of lenses 20 are stacked on the mounting frame 10. The plurality of lenses 20 include at least one non-curved lens 21 and at least one curved lens 22. Along the optical axis direction of the lens 50, two adjacent lenses 20 and the mounting frame 10 are enclosed to form a sealed cavity 30.

[0059] In this embodiment, the lens protection structure 100 is detachably connected to the lens 50. For example, when the lens protection structure 100 is worn and affects the imaging, the lens protection structure 100 can be removed from the shooting device for replacement. For another example, when it is necessary to shoot underwater scenes, the single curved mirror or single plane mirror protection structure can be removed, and then the lens protection structure 100 provided by the present disclosure can be installed at the lens 50 to ensure underwater imaging quality and waterproof performance. Accordingly, when switching from an underwater scene to an above-water scene for shooting, the lens protection structure 100 provided by the embodiment of the present disclosure can be removed, and then replaced with a single curved mirror protection structure, so that the shooting device has an extremely compact appearance.

[0060] In one example, the lens protection structure 100 is connected to the device body 200 of the photographing device by screw threads. Figure 2 and Figure 3The inner wall of the mounting frame 10 of the lens protection structure 100 is provided with a first thread, and the outer wall of the middle frame 60 of the device body 200 is provided with a second thread. The first thread and the second thread cooperate with each other. When the lens protection structure 100 is installed, as the mounting frame 10 and the lens 50 rotate relative to each other, the curved lens 22 and the lens 50 are on the optical axis ( Figure 3 The distance in the z direction (as shown in FIG. 1 ) gradually decreases, and after the mounting frame 10 is rotated to the right position (cannot rotate any further), the ambient light can be refracted through the curved lens 22 and enter the lens 50. In this embodiment, the threaded connection method can not only achieve detachability, but also form a labyrinth structure between the mutually meshing threads, which can prevent water vapor from the external environment from entering between the curved lens 22 and the lens 50, thereby improving the sealing performance of the lens protection structure 100 and further improving the imaging effect.

[0061] In another example (not shown in the drawings), the lens protection structure is connected to the device body by magnetic attraction. Exemplarily, magnets are provided at both the mounting frame and the lens, the magnets on the mounting frame and the lens are arranged along the optical axis, and the opposite magnets on the mounting frame and the lens are facing each other, such as the N pole of the magnet on the mounting frame and the S pole of the magnet on the lens. Exemplarily, a magnet can be provided only on the mounting frame, and an iron sheet or iron block can be provided on the lens, and a magnetic attraction force is generated between the magnet and the iron sheet, and the direction of the magnetic attraction force is parallel to the direction of the optical axis.

[0062] In another example (not shown in the drawings), the lens protection structure is connected to the device body by a buckle. The buckle is set on the mounting frame of the lens protection structure, and the buckle can include a spring and a clamping block. The lens is provided with a clamping slot. When the mounting frame is installed in place, the spring can drive the clamping block to extend into the clamping slot to form a clamping connection.

[0063] According to an exemplary embodiment of the present disclosure, Figures 1 to 3 As shown, an embodiment of the present disclosure provides a shooting device, such as a panoramic camera, a sports camera, etc. The shooting device includes a device body 200 and a lens protection structure 100 provided by any of the foregoing embodiments of the present disclosure. The device body 200 includes a middle frame 60 and a lens 50. The lens protection structure 100 is connected to the middle frame 60 and is covered at the lens 50 to protect the lens 50.

[0064] A shooting device provided with the lens protection structure 100 provided by any of the aforementioned embodiments of the present disclosure has all the effects of the lens protection structure 100, and the shooting device has extremely high imaging quality in both above-water and underwater scenes.

[0065] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the embodiments disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0066] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A lens protection structure, characterized in that: A lens installed on a shooting device, wherein the lens protection structure comprises: A mounting frame, mounted on the lens; A plurality of lenses are stacked on the mounting frame, wherein the plurality of lenses include at least one non-curved lens and at least one curved lens. Along the optical axis direction of the lens, two adjacent lenses and the mounting frame are enclosed to form a sealed cavity.

2. The lens protection structure according to claim 1, characterized in that: The plurality of lenses include a non-curved lens and a curved lens.

3. The lens protection structure according to claim 1 or 2, characterized in that: When the lens protection structure is installed on the lens, along the optical axis direction of the lens, the lens closest to the lens among the multiple lenses is set as the curved lens, and the lens farthest from the lens among the multiple lenses is set as the non-curved lens.

4. The lens protection structure according to claim 1, characterized in that: The sealed cavity has a gas filling, and the gas filling includes air; or, The gas filling includes any one or more of nitrogen, helium or argon.

5. The lens protection structure according to claim 1, characterized in that: The mounting frame is cylindrical, and a mounting step is arranged along the circumferential direction of the mounting frame, and the lens is mounted on the mounting step.

6. The lens protection structure according to claim 5, characterized in that: The mounting step is provided with a first sealing groove, the first sealing groove has a sealing adhesive layer, and the lens is bonded and connected to the mounting frame through the sealing adhesive layer.

7. The lens protection structure according to claim 5, characterized in that: A second sealing groove is arranged on the end surface of the mounting frame connected to the lens, and an annular sealing ring is arranged in the second sealing groove.

8. The lens protection structure according to claim 1, characterized in that: The lens protection structure is detachably connected to the lens.

9. The lens protection structure according to claim 8, characterized in that: The lens protection structure is connected to the lens by at least one of a threaded connection, a magnetic connection or a snap connection.

10. A photographing device, characterized in that: It comprises a lens and a lens protection structure as described in any one of claims 1 to 9.

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