CN211857152U - Camera lens fixing device, camera and mobile platform - Google Patents

Abstract

The utility model provides a camera lens fixing device, it is including being used for carrying out the camera lens of formation of image and being used for the camera lens installation section of thick bamboo of supporting the camera lens to the object, the camera lens is installed in the camera lens installation section of thick bamboo, be provided with first cooperation portion and second cooperation portion on the periphery wall of camera lens, be provided with third cooperation portion and fourth cooperation portion on the internal perisporium of camera lens installation section of thick bamboo, first cooperation portion sets to the radial relative motion who is used for between restriction camera lens and the camera lens installation section of thick bamboo with third cooperation portion, second cooperation portion sets to the axial relative motion who is used for between restriction camera lens and the camera lens installation section of thick bamboo with fourth cooperation portion. The first matching part and the third matching part limit relative radial movement between the lens and the lens mounting barrel, and the second matching part and the fourth matching part limit axial relative movement between the lens and the lens mounting barrel, so that fixed connection between the lens and the lens mounting barrel is realized, the stability of the lens is ensured, and basic guarantee is provided for high-quality image acquisition of a camera.

Description

Camera lens fixing device, camera and mobile platform

Technical Field

The present invention relates to a fixing device for a camera lens, and more particularly, to a lens fixing device particularly suitable for a fixed focus camera.

Background

The fixed-focus camera is particularly suitable for large-scale wind-solar photography, large-scale group photo-synthesis photography and fixed-point photography of animals and plants, and has the characteristics of simple design, high focusing speed, stable imaging quality and the like. Due to the particularity of an imaging principle of the infrared camera, the response rate of a detector needs to be calibrated aiming at determined lens focal lengths before delivery, a group of corresponding response rate parameters needs to be generated for each lens focal length, and the infrared camera is generally a fixed-focus camera adopting a fixed-focus lens from the comprehensive consideration of practical application and design and production.

In order to simplify the design of the infrared fixed-focus camera and reduce the cost, a movable dynamic focusing assembly is not arranged in the infrared fixed-focus lens generally, and the focal length of the lens is adjusted before the camera leaves a factory. In general, the axial focusing distance of the infrared fixed-focus lens is in the range of tens of micrometers, and the purpose of accurate focusing cannot be achieved by means of determined structural positioning, and a method of adjusting the focal length and then fixing the lens on a production line is generally adopted.

In the prior art, in order to ensure accurate focusing of a fixed-focus lens of an infrared camera, a clamp structure capable of being opened is usually arranged at a position of a lens barrel for mounting the lens, after the lens is focused, the clamp structure is locked by a screw, and the outer wall of the lens barrel is clamped by the clamp structure, so that the lens is clamped, and the lens is fixed. The fixing scheme of the lens is complex in operation, slight movement of the lens along the axial direction is easy to occur when the screw is locked, the phenomenon of defocusing is caused, the screw is locked, the radial positioning structure of the lens and the front shell of the camera is subjected to a large squeezing effect, certain hidden danger exists in reliability, and in addition, the fixing mode cannot achieve water prevention between the lens and the lens barrel of the camera.

Therefore, there is a need in the art to provide a camera lens fixing structure that is easy and convenient to assemble, safe and reliable to use, and waterproof between the lens and the camera body.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one aspect of the above technical problem, the embodiment of the utility model provides a fixing device of camera lens, this fixing device of camera lens be the tight shot fixed knot who assembles fast and design is simple constructs, and it can realize functions such as the accurate location of camera lens, dustproof and waterproof, repeated dismantlement, the regulation of focusing and firm installation.

According to an aspect of the utility model, a camera lens fixing device is provided, this camera lens fixing device is including being used for carrying out the camera lens of formation of image to the object and being used for supporting the camera lens installation section of thick bamboo, this camera lens is installed in the camera lens installation section of thick bamboo, furthermore, be provided with first cooperation portion and second cooperation portion on the periphery wall of camera lens, be provided with third cooperation portion and fourth cooperation portion on the internal perisporium of camera lens installation section of thick bamboo, first cooperation portion sets to the radial relative motion who is used for between restriction camera lens and the camera lens installation section of thick bamboo with third cooperation portion, second cooperation portion sets to the axial relative motion that is used for between restriction camera lens and the camera lens installation section of thick bamboo with fourth cooperation portion.

According to a preferred embodiment of the camera lens fixing device of the present invention, the first fitting portion is a cylindrical smooth surface formed on an outer peripheral wall of the lens, and the third fitting portion is a cylindrical smooth surface formed on an inner peripheral wall of the lens mount.

In another preferred embodiment of the camera lens fixing device according to the present invention, the second fitting portion is an external thread provided on an outer peripheral wall of the lens, and the fourth fitting portion is an internal thread provided on an inner peripheral wall of the lens mount cylinder.

According to the utility model discloses a camera lens fixing device's still another preferred embodiment, external screw thread and internal thread are clearance fit, are provided with elastomeric element between camera lens and camera lens installation section of thick bamboo.

In still another preferred embodiment of the camera lens fixing device according to the present invention, the elastic member includes an interference packing ring disposed between the first fitting portion and the third fitting portion.

According to still another preferred embodiment of the camera lens fixing device of the present invention, the interference packing seal ring is disposed in a first groove formed on a first fitting portion of the lens, or in a second groove formed on a third fitting portion of the lens mounting cylinder.

In another preferred embodiment of the camera lens fixing device according to the present invention, at least one weight-reducing groove is provided on the first fitting portion of the lens.

According to the utility model discloses a camera lens fixing device's still another preferred embodiment, at least one subtract and be provided with supplementary sealing washer in the weight groove.

In still another preferred embodiment of the camera lens fixing device according to the present invention, the elastic member includes a spring disposed between the first fitting portion and the fourth fitting portion.

According to the utility model discloses a camera lens fixing device's still another preferred embodiment, be provided with first recess on the first cooperation portion of camera lens, perhaps be provided with the second recess on the third cooperation portion of camera lens installation section of thick bamboo, set up waterproof sealing ring in first recess or the second recess.

In another preferred embodiment of the camera lens fixing device according to the present invention, at least one weight-reducing groove is provided on the first fitting portion of the lens.

According to still another preferred embodiment of the camera lens fixing device of the present invention, a waterproof seal ring is provided in at least one of the weight reduction grooves.

Another aspect of an embodiment of the present invention provides a camera including any one of the camera lens fixing devices described above.

According to an aspect of the embodiments of the present invention, there is also provided a mobile platform including the camera as described above.

Compared with the prior art, the utility model discloses at least one among the following beneficial effect has:

(1) the lens fixing device of the utility model is suitable for fixing the lens of the fixed-focus camera, in particular to an infrared camera which sets the focal length in the assembling and manufacturing process;

(2) the first matching part of the lens and the third matching part of the lens mounting barrel limit the relative movement between the lens and the lens mounting barrel along the radial direction of the lens, and the second matching part of the lens and the fourth matching part of the lens mounting barrel limit the relative movement between the lens and the lens mounting barrel along the axial direction of the lens, so that the fixed connection between the lens and the lens mounting barrel is realized, the stability of the lens is ensured, and the basic guarantee is provided for the high-quality image acquisition of a camera adopting the lens fixing device;

(3) the external thread of the second matching part and the internal thread of the fourth matching part are in clearance fit, so that the over-positioning condition possibly existing between the lens and the lens mounting barrel due to thread fit and smooth surface fit is eliminated, and the lens mounting barrel are relatively fixed in the axial direction through the elastic part arranged between the lens and the lens mounting barrel, so that the firm connection between the lens and the lens mounting barrel is ensured;

(4) the lens can be easily disassembled through the threaded connection between the lens and the lens mounting barrel, so that the camera can be conveniently refocused or maintained, and the disassembly and the assembly are convenient and quick;

(5) the interference that sets up between the first cooperation portion of camera lens and the third cooperation portion of a camera lens installation section of thick bamboo fills the sealing washer and not only provides the fastening effect for camera lens and a camera lens installation section of thick bamboo, provides the sealed effect between the two moreover to prevent that outside dust or steam from passing through the inside that the camera lens got into camera fuselage.

Drawings

Other objects and advantages of the present invention will become apparent from the following description of the invention, which is made with reference to the accompanying drawings, and can help to provide a thorough understanding of the present invention.

Fig. 1 is a cross-sectional view of a camera lens holding apparatus according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a lens of a camera lens holding device according to an embodiment of the present invention;

fig. 3 is a sectional view of a lens mount of a camera lens fixing device according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion A of FIG. 1;

fig. 5 is a cross-sectional view of a camera lens fixing device according to another embodiment of the present invention.

It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the embodiments of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention. It is to be understood that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs.

The utility model provides a fixing device of camera lens, especially a fixing device for tight shot camera lens, this fixing device 10 includes camera lens 12 and lens installation section of thick bamboo 14, and camera lens 12 is used for imaging to the object to acquire the image data of formation of image object, and lens installation section of thick bamboo 14 is used for installing and supporting camera lens 12, is connected camera fuselage with camera lens 12, as shown in fig. 1-3. In general, when capturing an image with a camera, the camera body needs to be held or supported on a stand, and the stability of the lens with respect to the camera body has a great influence on the imaging quality of the camera.

For this reason, respective fitting portions are provided on the lens 12 and the lens mount barrel 14, which is a part of the camera body, so that the two can be firmly coupled together. Here, a first fitting portion 122 and a second fitting portion 124 may be provided on the outer peripheral wall of the lens 12, and a third fitting portion 142 and a fourth fitting portion 144 may be provided on the inner peripheral wall of the lens mounting barrel 14, respectively, the first fitting portion 122 and the third fitting portion 142 being formed to restrict a radial relative movement between the lens 12 and the lens mounting barrel 14, and the second fitting portion 124 and the fourth fitting portion 144 being formed to restrict an axial relative movement between the lens 12 and the lens mounting barrel 14. The first fitting portion 122 and the second fitting portion 124 may be provided adjacently to the outer peripheral wall of the lens 12 or may be provided with a certain gap. Accordingly, the third and fourth fitting portions 142 and 144 are provided corresponding to the first and second fitting portions 122 and 124, respectively.

Here, advantageously, the fitting between the first fitting portion 122 and the third fitting portion 142 is such that there is no clearance or an acceptably very small clearance between the lens 12 and the lens mounting barrel 14 in the radial direction of the lens 12, thereby restricting the radial relative movement between the lens 12 and the lens mounting barrel 14. Similarly, the fit between the second fitting portion 124 and the fourth fitting portion 144 causes no clearance or an acceptably very small clearance in the axial direction of the lens between the lens 12 and the lens mounting barrel 14, thereby restricting the axial relative movement between the lens 12 and the lens mounting barrel 14. After the relative movement in the radial direction and the relative movement in the axial direction between the lens 12 and the lens mount cylinder 14 are restricted, the lens 12 can be firmly fixed in the lens mount cylinder 14, and thus can be very firmly fixed to the camera body. Therefore, when the camera is used for image acquisition, the lens 12 and the camera body do not move or move relatively due to the movement or shake of the camera body, and the image acquisition quality is ensured.

According to the camera lens fixing device of the present invention, the first fitting portion 122 provided on the outer peripheral wall of the lens 12 is a cylindrical smooth surface, that is, the lens 12 is cylindrical in shape, the first fitting portion 122 is formed on the outer surface of the cylindrical lens 12, and the first fitting portion 122 is formed as a smooth surface. Accordingly, the third fitting portion 142 provided on the inner peripheral wall of the lens mounting cylinder 14 is also a cylindrical smooth surface, that is, the lens mounting cylinder 14 has a cylindrical inner wall, the third fitting portion 142 is provided on the cylindrical inner wall of the lens mounting cylinder 14 corresponding to the first fitting portion 122 of the lens 12, the third fitting portion 142 is also formed as a smooth surface, the third fitting portion 142 forms a close fit of a plain surface and a plain surface with the first fitting portion 122 with little clearance therebetween or with a very small clearance within an acceptable range, so that no radial relative movement or only a very small radial relative movement within an acceptable range can occur between the lens 12 and the lens mounting cylinder 14.

By providing the first fitting portion 122 of the lens 12 and the third fitting portion 142 of the lens mount barrel 14 as cylindrical smooth surfaces, the two smooth surfaces can be tightly fitted together, thereby providing a tight fit in the radial direction between the lens 12 and the lens mount barrel 14, and thereby restricting relative movement of the lens 12 and the lens mount barrel 14 in the radial direction. Meanwhile, the cylindrical smooth surfaces that are fitted closely to each other do not restrict the movement of the lens 12 and the lens mount barrel 14 relative to each other in the axial direction, nor relative rotational movement therebetween.

Further, according to the lens fixing device 10 of the present invention, the second fitting portion 124 disposed on the outer peripheral wall of the lens 12 is an external thread, and the second fitting portion 124 may be disposed adjacent to the first fitting portion 122, or may be disposed at a distance from the first fitting portion 122, and preferably, the two are disposed at a certain distance, for example, the two may be spaced apart by several millimeters, or may be spaced apart by a longer or shorter distance according to the structural length of the lens 12. The fourth fitting portion 144 is an internal thread provided on the inner surface of the lens mounting tube 14, and the fourth fitting portion 144 may be provided adjacent to the third fitting portion 142 or may be provided spaced apart from the third fitting portion 142, corresponding to the second fitting portion 124 on the lens 12. With the external thread of the lens 12 and the internal thread of the lens mounting cylinder 14, when the lens 12 is screwed into the lens mounting cylinder 14, the lens 12 and the lens mounting cylinder 14 can be screw-fitted together, and the relative axial movement between the lens 12 and the lens mounting cylinder 14 is restricted by the screw threads fitted to each other. Up to this point, both the radial and axial relative movements between the lens 12 and the lens mounting tube 14 are restricted, that is, the lens fixing device 10 can firmly fasten the lens 12 to the camera body provided integrally with the lens mounting tube 14, thereby ensuring that the lens 12 does not undergo relative movement with respect to the camera body during image capturing with the camera. In addition, the simple and convenient adjustment of the focal length of the fixed-focus camera can be ensured under the condition of convenient assembly by adopting the positioning mode of smooth matching surface matching and threaded matching in the production and assembly processes of the camera, and in addition, the disassembly and the maintenance of the camera lens are facilitated.

In designing the lens 12 and the lens mounting barrel 14 as described above, since the first fitting portion 122 of the lens 12 and the third fitting portion 142 of the lens mounting barrel 14 are in close fit of a smooth surface and a smooth surface, in order to prevent the screw-fitting between the lens 12 and the lens mounting barrel 14 from causing an over-positioning condition to the lens 12 and the lens mounting barrel 14 which have been nested together by the close-fitting, the external thread of the second fitting portion 124 of the lens 12 and the internal thread of the fourth fitting portion 144 of the lens mounting barrel M are arranged to mesh with a certain clearance, but such clearance meshing may cause the lens 12 to move axially relative to the lens mounting barrel 14. As shown in fig. 4, a gap M exists between the external thread of the lens 12 and the internal thread of the lens mounting barrel 14, and if the lens 12 and the lens mounting barrel 14 are not restricted at all, the two move axially relative to each other due to the gap M during use.

For this reason, an elastic member is provided between the lens 12 and the lens mounting cylinder 14, and the elastic member can elastically limit the relative positional relationship between the lens 12 and the lens mounting cylinder 14, and eliminate a fit clearance between the external thread of the lens 12 and the internal thread of the lens mounting cylinder 14, thereby limiting the relative movement of the lens 12 and the lens mounting cylinder 14 in the axial direction, ensuring that the lens 12 does not move relative to the camera body during use of the camera, and ensuring the quality of an image acquired by the camera.

In the embodiment shown in fig. 1, the elastic member may be an interference packing seal 16 disposed between the first fitting portion 122 of the lens 12 and the third fitting portion 142 of the lens mounting barrel 14. The interference fit packing 16 may be provided in a first groove 126 formed on an outer peripheral wall of the lens 12 at the position of the first fitting portion 122, or may be provided in a second groove (not shown) formed on an inner peripheral wall of the lens mount barrel 14 at the position of the third fitting portion 142. The filling rate of the interference filling seal ring 16 in the first groove 126 or the second groove is 90% -100%, so that it can be ensured that the interference filling seal ring 16 can provide an acting force opposite to the relative movement between the lens 12 and the lens mounting barrel 14 in the process of screwing the lens 12 into the lens mounting barrel 14, so that one side of the external thread of the lens 12 is tightly attached to one side of the internal thread of the lens mounting barrel 14, thereby eliminating the gap between one side of the external thread of the second matching part 124 of the lens 12 and one side of the internal thread of the lens mounting barrel 14, and maintaining the tight attachment relationship between the external thread and the internal thread, thereby limiting the axial relative movement between the lens 12 and the lens mounting barrel 14.

Further, in order to reduce the weight of the lens 12 as much as possible, at least one lightening groove 128 is formed on the outer peripheral wall of the lens 12 at the position of the first fitting portion 122, where the lightening groove 128 may be the same in structure and shape as the first recess 126 for accommodating the interference packing seal ring 16, or may be different therefrom, the lightening groove 128 is provided around the outer peripheral wall of the lens 12, formed as an annular groove on the outer peripheral wall of the lens 12, the interference packing seal ring 16 may be provided in one of the lightening grooves 128, or an auxiliary seal ring (not shown) may be provided in at least one of the lightening grooves 128, which may play the same role as the interference packing seal ring 16, or may play only a waterproof sealing role. Thus, a force during the threaded engagement between the lens 12 and the lens mounting barrel 14 may be provided by the interference packing seal ring 16 disposed in the first groove 126 or by the auxiliary seal ring in at least one of the above-described interference packing seal ring 16 and the lightening groove 128, so that a clearance on one side of the threaded engagement therebetween is eliminated, thereby eliminating an axial relative displacement between the lens 12 and the lens mounting barrel 14 due to the threaded engagement with clearances on both sides.

According to another preferred embodiment of the lens fixing device 10 of the present invention, as shown in fig. 5, the elastic member disposed between the lens 12 and the lens mounting cylinder 14 may include a spring 18 disposed between the first fitting portion 122 of the lens 12 and the fourth fitting portion 144 of the lens mounting cylinder 14. Here, it is necessary to dispose the first fitting portion 122 of the lens 12 spaced apart from the second fitting portion 124 while the fourth fitting portion 144 of the lens mounting barrel 14 has substantially the same length as the second fitting portion 124 so that there is a space between the first fitting portion 122 and the fourth fitting portion 144 to accommodate the spring 18. An elastic force can be provided between the first fitting portion 122 of the lens 12 and the fourth fitting portion 144 of the lens mounting barrel 14 by the spring 18, the direction of the elastic force being in the direction of separating the lens 12 and the lens mounting barrel 14, whereby in screwing the lens 12 into the lens mounting barrel 14 by screw-fitting, the spring 18 between the first fitting portion 122 and the fourth fitting portion 144 is utilized to provide a counter-acting force for the lens 12 and the lens mounting barrel 14, whereby one side of the external thread of the second fitting portion 124 and one side of the internal thread of the fourth fitting portion 144 are tightly abutted together, thereby restricting the axial relative movement between the lens 12 and the lens mounting barrel 14.

In the case of the spring 18, the interference packing 16 may no longer be provided, and accordingly, only the waterproof packing 20 needs to be provided. At this time, a first groove 126 may be provided on the outer peripheral wall of the lens 12 at the position of the first fitting portion 122, or a second groove (not shown) may be provided on the inner peripheral wall of the lens mount barrel 14 at the position of the third fitting portion 142. A waterproof seal ring 20 may be provided in the first groove 126 or the second groove, and the waterproof seal ring 20 functions as a waterproof seal, which generally does not provide a force to eliminate a meshing gap between one side of the external thread of the lens 12 and one side of the internal thread of the lens mount barrel 14, so that it is only necessary to provide a seal ring having a filling rate of about 30% in the first groove 126 or the second groove.

Here, only one first groove 126 may be provided in the outer peripheral wall of the lens 12 and the waterproof gasket 20 may be provided in the first groove 126, or only one second groove may be provided in the inner peripheral wall of the lens mount 14 and the waterproof gasket 20 may be provided in the second groove. Meanwhile, in order to reduce the weight of the lens 12 itself, at least one lightening groove 128 is provided on the first fitting portion 122, and a waterproof gasket may be provided in at least one of the lightening grooves 128, but of course, the waterproof gasket may not be provided in the lightening groove 128, and the lightening groove 128 may be provided to have the same structure as the first groove 126, or may have a different structure.

The lens fixing device 10 according to the present invention restricts the radial relative movement between the lens 12 and the lens mounting barrel 14 by the smooth surface fit between the first fitting portion 122 of the lens 12 and the third fitting portion 142 of the lens mounting barrel 14, and restricts the radial relative movement between the lens 12 and the lens mounting barrel 14 by the screw fit between the second fitting portion 124 of the lens 12 and the fourth fitting portion 144 of the lens mounting barrel 14 and the elastic fit between the first fitting portion 122 and the fourth fitting portion 144, thereby providing a relatively firm fixing relationship between the lens 12 and the lens mounting barrel 14, so that the lens 12 is tightly fixed on the camera body, and providing a basic guarantee for high quality imaging of the camera. Further, a good seal is provided for the camera by a waterproof gasket disposed in the first groove 126 in the first fitting portion 122, preventing dust or moisture, etc. from entering the interior of the camera body through the lens 12. In addition, it is also possible to achieve easy mounting of the lens 12 by screw-fitting between the lens 12 and the lens mounting barrel 14, provide great convenience in assembly production of the camera, and also facilitate disassembly of the lens 12 by a simple screwing operation for maintenance or focus adjustment.

The utility model discloses a camera lens fixing device 10 is applicable to the fixed of the camera lens of tight shot camera, and the infrared camera that the focus was set for is carried out to the specially adapted in the equipment manufacturing process. During the manufacturing and assembling process of the fixed focus infrared camera, the interference filling seal ring 16 may be placed in the first groove 126 of the lens 12, and then the second mating portion 124 of the lens 12 is inserted into the lens mounting cylinder 14 from the opening of the lens mounting cylinder 14, i.e., the third mating portion 142, until the second mating portion 124 of the lens 12 and the fourth mating portion 144 of the lens mounting cylinder 14 start to be engaged, i.e., until the external thread of the lens 12 and the internal thread of the lens mounting cylinder 14 start to be engaged. After that, the lens 12 is screwed with respect to the lens mounting cylinder 14, and as the lens 12 moves into the lens mounting cylinder 14, the interference packing 16 is gradually deformed toward the side away from the moving direction of the lens 12, thereby providing a force to block the movement of the lens 12 toward the inside of the lens mounting cylinder 14, thereby tightly fitting the side of the external thread of the lens 12 and the side of the internal thread of the lens mounting cylinder 14, so that the lens 12 and the lens mounting cylinder 14 are firmly combined together after the lens 12 is adjusted to a proper focal length, and neither can move in the radial direction of the lens 12 nor can move in the axial direction of the lens 12, ensuring the stability thereof during use. In addition, when the lens 12 needs to be refocused or repaired after a certain time of use, the lens 12 can be detached from the lens mounting tube 14 by reversely screwing the lens 12, which is very convenient to use. Here, the interference packing seal 16 provides not only a fastening function for the lens 12 and the lens mounting tube 14, but also a sealing function therebetween so as to prevent external dust or moisture from entering the inside of the camera body through the lens 12.

Similarly, in the case where the spring 18 and the waterproof seal ring 20 are provided, before the lens 12 is assembled into the lens mounting tube 14, the spring 18 is first interposed between the first fitting portion 122 and the second fitting portion 124 of the lens 12, and the waterproof seal ring 20 is provided in the first groove 126 of the first fitting portion 122. Then, the second mating portion 124 of the lens 12 is inserted into the lens mounting barrel 14 from the opening of the lens mounting barrel 14 until the second mating portion 124 of the lens 12 comes into engagement with the fourth mating portion 144 of the lens mounting barrel 14, that is, until the male screw of the lens 12 comes into engagement with the female screw of the lens mounting barrel 14. Thereafter, the lens 12 is started to be screwed with respect to the lens mounting cylinder 14, and as the lens 12 moves into the lens mounting cylinder 14, the spring 18 is gradually compressed by the first fitting portion 122 of the lens 12 and the fourth fitting portion 144 of the lens mounting cylinder 14, thereby providing a force resisting the movement of the lens 12 toward the inside of the lens mounting cylinder 14 to tightly fit the side of the external thread of the lens 12 and the side of the internal thread of the lens mounting cylinder 14, so that the lens 12 and the lens mounting cylinder 14 are firmly coupled together after the lens 12 is adjusted to a proper focal length, and neither can move in the radial direction of the lens 12 nor can move in the axial direction of the lens 12, ensuring the stability thereof during use. Similarly, when the lens 12 needs to be refocused or repaired after a certain period of use, the lens 12 can be detached from the lens mounting barrel 14 by reversely screwing the lens 12, which is very convenient for use. Here, the waterproof gasket 20 provides a sealing function between the lens 12 and the lens mount 14 to prevent external dust or moisture from entering the inside of the camera body through the lens 12.

The utility model also provides a camera, this camera include as above camera lens fixing device 10, this camera has the accurate, waterproof dustproof, camera lens convenient to detach and camera lens installation advantage such as firm of focusing to consequently have the ability of acquireing high quality image.

In addition, the utility model also provides a mobile platform, this mobile platform include as above the camera, can make mobile platform obtain higher-quality image data through adopting the camera that has above-mentioned structure to be favorable to subsequent image processing and target to reach. Here, the mobile platform may include, but is not limited to, an object movable on land, on water, or in the air, for example, the mobile platform may be an unmanned aerial vehicle, an unmanned ship, an unmanned vehicle, a robot, or the like. Optionally, the mobile platform in this embodiment may be an unmanned aerial vehicle.

For the embodiments of the present invention, it should be further explained that, under the condition of no conflict, the features in the embodiments and embodiments of the present invention can be combined with each other to obtain a new embodiment.

The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (14)

1. A camera lens fixing device, comprising:

a lens for imaging an object; and

the lens mounting barrel is used for supporting the lens;

the outer peripheral wall of the lens is provided with a first matching portion and a second matching portion, the inner peripheral wall of the lens installation barrel is provided with a third matching portion and a fourth matching portion, the first matching portion and the third matching portion are arranged to limit the lens and the radial relative movement between the lens installation barrel, and the second matching portion and the fourth matching portion are arranged to limit the lens and the axial relative movement between the lens installation barrel.

2. The camera lens holding device according to claim 1, wherein:

the first fitting portion is a cylindrical smooth surface formed on an outer peripheral wall of the lens, and the third fitting portion is a cylindrical smooth surface formed on an inner peripheral wall of the lens mount cylinder.

3. The camera lens fixing device according to claim 1 or 2, wherein:

the second cooperation portion is for setting up external screw thread on the periphery wall of camera lens, the fourth cooperation portion is for setting up internal thread on the internal perisporium of a camera lens installation section of thick bamboo.

4. A camera lens holding apparatus according to claim 3, wherein:

the external thread and the internal thread are in clearance fit, and an elastic component is arranged between the lens and the lens mounting barrel.

5. The camera lens holding apparatus according to claim 4, wherein:

the elastic component comprises an interference filling sealing ring arranged between the first matching part and the third matching part.

6. The camera lens holding apparatus according to claim 5, wherein:

the interference filling seal ring is arranged in a first groove formed on the first matching part of the lens or in a second groove formed on the third matching part of the lens mounting cylinder.

7. The camera lens holding apparatus according to claim 6, wherein:

at least one lightening groove is formed in the first matching part of the lens.

8. The camera lens holding apparatus according to claim 7, wherein:

and an auxiliary sealing ring is arranged in at least one of the weight reducing grooves.

9. The camera lens holding apparatus according to claim 4, wherein:

the elastic member includes a spring disposed between the first fitting portion and the fourth fitting portion.

10. The camera lens holding apparatus according to claim 9, wherein:

the lens the first cooperation portion is provided with first recess, perhaps the lens installation section of thick bamboo the third cooperation portion is provided with the second recess, first recess or set up waterproof sealing circle in the second recess.

11. The camera lens holding apparatus according to claim 10, wherein:

at least one lightening groove is formed in the first matching part of the lens.

12. The camera lens holding apparatus according to claim 11, wherein:

and at least one of the lightening grooves is internally provided with a waterproof sealing ring.

13. A camera, characterized in that the camera comprises a camera lens holding device according to any one of claims 1-12.

14. A mobile platform, characterized in that it comprises a camera according to claim 13.

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