Telephoto lens and camera module

Abstract

The invention relates to the field of camera lenses, in particular to a telephoto lens and a camera module, which comprises a shell sleeve, a plurality of lenses are fixedly mounted in the shell sleeve, a packaging ring is fixedly mounted on the shell sleeve, and the packaging ring is arranged close to the position where the shell sleeve is connected with the camera module. A swing ring is arranged in the packaging ring and rotationally connected to the packaging ring and the shell sleeve. According to the invention, the push member pushes the swing ring to turn over to close the telephoto lens, the push member drives the two isolation plates to get close to each other, and when the telephoto lens and the camera module are installed together, the shell sleeve pushes the two isolation plates to be separated from each other through the push member, and the push member pushes the swing ring to turn over to open the telephoto lens at the same time. An endoscope and an image sensor of the telephoto lens are prevented from being exposed in an external wind and sand environment, internal circuits such as the endoscope and the image sensor of the telephoto lens are ensured not to be affected, and the overall quality of shot images is ensured.

Description

Technical Field

[0001] The present invention relates to the field of camera lenses, and in particular to a telephoto lens and a camera module. Background Art

[0002] A telephoto lens, also known as a telephoto lens, is a photographic and video lens with a long focal length. Its working principle is to increase the distance between the lens and the image sensor so that the light can be better focused on the sensor after entering the lens. In a telephoto lens, the light first passes through the lens group and then the convex lens focuses the light to the focal point. The focal length can be adjusted by adjusting the distance between the lens and the sensor. The camera module includes a telephoto lens, an image sensor, an IR filter, and a circuit board.

[0003] In the daily shooting process, it is necessary to install the telephoto lens on the camera housing. Because the light needs to pass through the lens inside the telephoto lens, one side of the telephoto lens will be exposed to the outside air. However, when the device is used in a dusty environment, the generated dust will adhere to the telephoto lens, causing the outer mirror surface of the telephoto lens to be contaminated, resulting in incomplete captured images. Therefore, the patent application with patent publication number CN221842611U provides a lens cleaning structure for a camera, which drives a scraper to clean the surface of the camera lens through a servo motor, and cooperates with a nozzle to humidify and remove stubborn stains on the lens surface. However, it should be noted that in some special shooting processes, the telephoto lens needs to be removed and replaced with a different type of lens for use. In the process of replacing the lens, external dust will enter the camera and adhere to the outer surface of the image sensor, causing part of the photosensitive element to be blocked, resulting in shadows on the image. These shadows will reduce the overall contrast of the image, resulting in reduced image resolution.

[0004] To this end, a telephoto lens and a camera module are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a telephoto lens and a camera module to solve the problem that during the process of replacing the lens, external dust will enter the interior of the camera and adhere to the outer surface of the image sensor, causing shadows to appear on the image. These shadows will reduce the overall contrast of the image, resulting in reduced image resolution.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A telephoto lens comprises an outer shell sleeve, wherein a plurality of lenses are fixedly mounted in the outer shell sleeve, a packing ring is fixedly mounted on the outer shell sleeve, the packing ring is arranged near the position where the outer shell sleeve is connected to a camera module, a swing ring is arranged in the packing ring, the swing ring is rotatably connected to the packing ring and the outer shell sleeve, a pushing member is mounted on the swing ring (6) rotating shaft, a rubber film is arranged in the packing ring, one side of the rubber film is fixedly mounted to the inner wall of the packing ring, and the other side of the rubber film is fixedly mounted to the side wall of the swing ring, and a torsion spring connected to the packing ring is mounted on the swing ring.

[0008] When the telephoto lens and the camera module are connected together, the swing ring will be located in the packaging ring, and the connected rubber film will also be located in the packaging ring. However, when the telephoto lens and the camera module are separated from each other, the torsion spring installed in the packaging ring will release elastic potential energy, pushing the swing ring to flip 180°, so that the swing ring rotates to the other side of the packaging ring. Of course, because the rubber film is fixed to the swing ring, the rubber film will be pulled to rotate after the swing ring is flipped, covering the inner mirror of the telephoto lens to prevent it from being affected by external dust. Of course, when reconnecting the telephoto lens, the external gear is pushed to rotate, and the swing ring is driven to rotate to its original position through the external gear. Of course, the rubber film will be brought back into the packaging ring, and the rotating swing ring will also drive the torsion spring to rotate, so that it can generate elastic potential energy to push the swing ring to flip when the lens is replaced next time, and quickly protect the disconnected inner mirror to prevent it from being exposed to the external wind and sand environment, ensuring that the telephoto lens can be quickly switched in harsh environments.

[0009] A camera module is provided with the telephoto lens described above, including the telephoto lens described above, and also includes a camera housing, an image sensor is arranged in the camera housing, a mounting box is fixedly mounted on the camera housing, two symmetrically arranged isolation plates are rotatably connected in the mounting box, when the two isolation plates are close to each other, the isolation plates divide the mounting box into an inner layer and an outer layer, the image sensor is arranged on the side close to the inner layer, a pushing member is provided in the mounting box, when the telephoto lens and the camera module are installed together, the housing sleeve pushes the two isolation plates to separate from each other through the pushing member, and at the same time, the pushing member pushes the swing ring to flip to open the telephoto lens, when the telephoto lens and the camera module are separated, the pushing member pushes the swing ring to flip to close the telephoto lens, and the pushing member drives the two isolation plates to move closer to each other.

[0010] When the telephoto lens is separated from the camera module, the pushing member will push the two isolation plates to rotate due to the separation of the telephoto lens. The rotating isolation plates move toward the middle to isolate the inner layer and the outer layer. When the telephoto lens and the camera module are installed together, the telephoto lens enters the installation box and pushes the pushing member to operate, so that the pushing member drives the external gear to rotate while driving the isolation plates on both sides to close toward the middle, protecting the image sensor and internal circuit in the camera housing from being affected, thereby ensuring the overall quality of the image after shooting.

[0011] Preferably, the pushing member includes an internal gear, an external gear, a pushing frame, an internal rack, an external rack, and a first compression spring. The internal gear is installed on the rotating shaft of the isolation plate, and the pushing frame is slidably connected in the installation box. Two symmetrically arranged internal racks are fixedly installed on one side of the pushing frame, and no locking teeth are provided in the one-third section of the internal rack close to the pushing frame. The internal rack and the internal gear cooperate with each other. An external rack is fixedly installed on the other side of the pushing frame, and an external gear is fixedly installed on the rotating shaft of the swing ring. The external rack and the external gear cooperate with each other. A first compression spring is installed in the installation box, and one side of the first compression spring abuts against the pushing frame. The elastic coefficient of the first compression spring is greater than the elastic coefficient of the torsion spring.

[0012] When the telephoto lens is installed on the camera housing, the telephoto lens will first enter the installation box and push the push frame in the installation box to move. Because an external rack is fixedly installed on one side of the push frame, the external rack will contact the external gear, and the telephoto lens is still entering the installation box. Because the elastic strength of the first compression spring is greater than the elastic strength of the torsion spring, the external rack will first push the external gear to rotate. When the swing ring rotates to the other side, the housing of the telephoto lens will continue to push the push frame to move and squeeze the first compression spring, so that the internal rack on the push frame drives the internal gear to rotate, so that the internal gear drives the isolation The plate is flipped to both sides to connect the inner layer with the outer layer. At this time, the camera housing will be connected to the telephoto lens. When the telephoto lens is replaced, the telephoto lens is taken out of the installation box. At this time, the compression spring will push the push frame back to its original position. At this time, the internal rack drives the isolation plate to move closer to the middle through the internal gear, so that the inner layer and the outer layer are separated from each other. The action of installing the telephoto lens pushes the isolation plates on both sides to open or close before the telephoto lens leaves the installation box, ensuring that external dust cannot enter the inner layer and interfere with the electronic components in the camera housing, thereby ensuring the overall quality of the works shot by the camera module.

[0013] Preferably, a placement slot is provided on one side of the installation box, and after the isolation plate is separated and opened to both sides, the isolation plate enters the placement slot, and a plurality of limit rods are fixedly installed in the placement slot, and the limit rods are slidably connected with a guide block, and the limit rods are installed with a second compression spring that abuts the guide block, and a cleaning plate is rotatably connected between the guide blocks on both sides, and a rubber wheel is fixedly installed on the rotating shaft of the cleaning plate, and the rubber wheel abuts against the inner wall of the installation box, and a dust exhaust window is provided on the inner wall of the installation box, and a dust prevention plate that fits therewith abuts on the dust exhaust window, and the dust prevention plate is fixedly installed with the guide block through a round rod, and a push plate is slidably connected in the placement slot, and an inclined through slot is provided on the push plate, and a push column is provided in the through slot, and the push column is rotatably connected to the guide block, and when the outer shell sleeve enters the installation box, the push frame abuts against the push plate.

[0014] During actual use, a small amount of dust particles will adhere to the isolation plate. After long-term use, the dust on the isolation plate will fly when the isolation plate is flipped over, enter the inner layer of the installation box through the gap where the isolation plate has not been flipped over and closed, and adhere to the image sensor. Therefore, the dust particles on the isolation plate need to be cleared after use. After the isolation plate is flipped over, it enters the placement groove, and the placement groove is closed to form a closed space between the placement groove and the isolation plate. During the downward movement of the cleaning plate, the dust particles on the surface of the isolation plate are scraped off. At the same time, because of the cleaning plate and, of course, the scraped dust particles will be discharged through the dust exhaust window. During the downward movement of the guide block, the dustproof plate will also be driven to open, so the dust particles will be discharged. By cleaning the dust particles on the isolation plate in the closed space, it is prevented from flying to the inner layer of the installation box.

[0015] Preferably, a storage cavity is opened in the isolation plate, and a diaphragm is arranged in the storage cavity, and metal wires are fixedly installed at both ends of the diaphragm. Two rotating rods are rotatably connected in the storage cavity, and the metal wires are sleeved on the rotating rods. The central axis of one of the rotating rods is on the same axis as the rotating axis of the isolation plate. A torsion spring is installed on the rotating rod, and one end of the torsion spring is fixedly installed on the rotating rod. A pushing block is threadedly installed on the rotating rod, and the pushing block is slidably connected in the storage cavity. After the rotating rod rotates a specified number of times, the protrusion on the pushing block abuts against the torsion spring, and the rotating rod extends outside the isolation plate and is fixedly installed with the internal gear.

[0016] When the internal rack pushes the internal gear to rotate, it will first push the rotating rod on one side of the storage chamber to rotate, and the rotation will drive the metal wire and the diaphragm mounted thereon to rotate. Of course, because a torsion spring and a pushing block are installed on the rotating rod, the torsion spring and the pushing block do not contact each other. Therefore, after the diaphragm rotates to the specified position to cover the outer surface of the isolation plate, when the rotating rod drives the pushing block thread to rise to the specified position, it will drive the outer isolation plate to rotate, so that the isolation plate rotates to the specified position. Of course, because the isolation plate has rotated to the set position and cannot continue to rotate, the rotating rod will compress the torsion spring at this time, and continue to drive the metal wire and the film to rotate, and open the outer surface of the isolation plate. Because the isolation plate is located in the placement groove at this time, the dust particles can be removed after the diaphragm is opened, so as to avoid the isolation plate fanning dust particles to suspend in the installation box when moving, and prevent them from adhering to the image sensor, thereby ensuring the normal operation of the image sensor inside the camera equipment.

[0017] Preferably, a rubber bucket is fixedly installed at the opening of the installation box, a plurality of fixed half rings are arranged in the installation box, two of the fixed half rings are arranged up and down, a long rod is hinged in the installation box, one end of the long rod is rotatably connected to the fixed half ring, and a silicone pad is fixedly installed on the other end of the long rod.

[0018] The rubber bucket wraps the outer shell of the telephoto lens after it enters the installation box to prevent dust particles from entering the installation box. Of course, as the telephoto lens continues to move, it will push the long rod to flip, pushing the fixed half rings closer to each other to further fix the telephoto lens entering the installation box, and the rubber bucket is also used to seal the connection between the telephoto lens and the installation box.

[0019] Preferably, the side wall of the isolation plate on one side close to the isolation plate on the other side is provided with an inner inclined surface, and the side wall of the isolation plate on the other side close to the isolation plate on one side is provided with an outer inclined surface, and when the two isolation plates are close to each other, the inner inclined surface is in contact with the outer inclined surface, and the relative positions of the teeth on the corresponding internal racks on both sides are different. When the internal racks on both sides move at the same time and engage with the internal gears, the internal rack on one side first pushes the isolation plate with the outer inclined surface to rotate.

[0020] The setting of the inner inclined surface and the outer inclined surface makes the connection between the two isolation plates more tightly sealed, further preventing external dust particles and humid air from entering the interior of the camera device. Of course, because it is a staggered setting, one of the isolation plates needs to be flipped first, and then the isolation plate on the other side is flipped. By adjusting the relative position of the teeth on the internal rack, the internal rack on one side first pushes the internal gear to rotate. By switching different flipping times, the sealing degree of the inner layer of the installation box is further guaranteed, ensuring the normal operation of the image sensor inside the camera device and ensuring the image resolution of the work captured by the camera.

[0021] Preferably, the rubber wheel is provided with evenly arranged scales, so that when the rubber wheel rotates upward, the scales can tightly fit the surface of the rubber wheel to reduce the friction between the rubber wheel and the surface of the installation box; when the rubber wheel rotates downward, because the scales are arranged downward, the rubber wheel will push the scales thereon against the surface of the installation box to form a certain friction force, thereby ensuring that the cleaning plate can tightly fit the isolation plate for cleaning.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. When the telephoto lens is separated from the camera module, the pusher pushes the swing ring to flip and close the telephoto lens, and the pusher drives the two isolation plates to move closer to each other. When the telephoto lens and the camera module are installed together, the outer shell sleeve will push the two isolation plates to separate from each other through the pusher, and at the same time, the pusher pushes the swing ring to flip and open the telephoto lens, so as to avoid the inner mirror and image sensor of the telephoto lens from being exposed to the external wind and sand environment during replacement, ensure that the internal circuits such as the inner mirror and image sensor of the telephoto lens are not affected, and ensure the overall quality of the image after shooting.

[0024] 2. After the diaphragm rotates to the designated position to cover the outer surface of the isolation plate, the isolation plate is flipped over and placed in the placement groove, so that a closed space is formed between the placement groove and the isolation plate. Dust particles on the isolation plate are removed in the closed space to prevent them from flying to the inner layer of the installation box. The isolation plate is coated to prevent dust particles from diffusing into the inner layer for a second time and adhering to the image sensor, thereby ensuring the normal operation of the image sensor inside the camera device.

[0025] 3. The side wall of the isolation plate on one side is set as an inner inclined surface, and the side wall of the isolation plate on the other side is set as an outer inclined surface. By adjusting the relative position of the teeth on the internal rack, the internal rack on one side first pushes the internal gear to rotate, so that the inner inclined surface and the outer inclined surface are staggered and close to each other. By switching different flipping times, the sealing degree of the inner layer of the installation box is further guaranteed, the normal operation of the image sensor inside the camera equipment is guaranteed, and the overall quality of the image of the work captured by the camera is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the outer shell sleeve in the present invention;

[0028] Figure 3 It is a schematic diagram of the unfolded structure of the swing ring in the present invention;

[0029] Figure 4 It is a schematic diagram of the internal structure of the installation box in the present invention;

[0030] Figure 5 is a top view of the interior of the installation box of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the through groove in the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the isolation plate in the present invention;

[0033] Figure 8 for Figure 7 The structural diagram at A in the middle;

[0034] Fig. 9 It is a structural schematic diagram of the storage chamber in the present invention.

[0035] In the figure: 1. camera housing; 2. housing sleeve; 3. mounting box; 301. outer layer; 302. inner layer; 4. packing ring; 5. scales; 6. swing ring; 7. external gear; 9. isolation plate; 10. internal rack; 11. external rack; 12. first compression spring; 13. internal gear; 14. placement groove; 15. limit rod; 16. guide block; 17. clearing plate; 18. push frame; 19. rubber bucket; 20. long rod; 21. fixed half ring; 22. push plate; 23. rubber wheel; 24. second compression spring; 25. dustproof plate; 26. dust exhaust window; 27. through groove; 28. push column; 29. ​​storage chamber; 30. rotating rod; 31. diaphragm; 32. metal wire; 33. inner inclined surface; 34. outer inclined surface; 35. push block; 36. torsion spring; 37. rubber film. DETAILED DESCRIPTION

[0036] See also Figures 1 to 9 The present invention provides a telephoto lens and a camera module, and the technical solution is as follows:

[0037] A telephoto lens comprises an outer shell sleeve 2, wherein a plurality of lenses are fixedly mounted in the outer shell sleeve 2, a packing ring 4 is fixedly mounted on the outer shell sleeve 2, the packing ring 4 is arranged near the position where the outer shell sleeve 2 is connected to a camera module, a swing ring 6 is arranged in the packing ring 4, the swing ring 6 is rotatably connected to the packing ring 4 and the outer shell sleeve 2, a pushing member is mounted on the rotating shaft of the swing ring (6), a rubber film 37 is arranged in the packing ring 4, one side of the rubber film 37 is fixedly mounted to the inner wall of the packing ring 4, and the other side of the rubber film 37 is fixedly mounted to the side wall of the swing ring 6, and a torsion spring connected to the packing ring 4 is mounted on the swing ring 6.

[0038] Telephoto lenses increase the distance between the lens and the image sensor so that light can be better focused on the sensor after entering the lens, thereby obtaining a magnified image. In a telephoto lens, light first passes through the lens group and is focused to the focal point by a convex lens. The longer the focal length, the narrower the viewing angle and the farther the object that can be photographed. This is because light will refract after passing through the lens. When the light passes through the convex axis and converges at the focal point, the image will be clearer. Therefore, the cleanliness of both ends of the lens will greatly affect the quality of the finished image. Therefore, cleaning both ends of the lens is an extremely important part. During the production process of the lens, because the outdoor scenes need to be long, The lens is exposed to the outside air for a long time, so the lens manufacturers will coat the outer mirror to make it resistant to the friction and corrosion of the external wind and sand. However, the coating cost is high and the coating will also affect the transmittance of the lens. The inner mirror of the lens is connected to the inside of the camera, so in order to ensure the transmittance of the lens, the manufacturer will not spend extra money to coat the inner mirror. As a result, the inner mirror is more prone to wear or scratches, so professional cameramen will replace the lens in an environment with less dust, and will use professional cleaning tools to clean the lens. However, in some special occasions, in order to ensure timely capture and continuity of shooting, the lens needs to be quickly cleaned. When the telephoto lens and the camera module are replaced, the interior of the endoscope and the camera will be exposed to the external environment containing wind and sand, so the lens needs to be cleaned in time to avoid damage. Therefore, the above structure is used to protect the lens endoscope during replacement. Specifically, when the telephoto lens and the camera module are connected together, the swing ring 6 will be located in the packaging ring 4, and the connected rubber film 37 will also be located in the packaging ring 4. However, when the telephoto lens and the camera module are separated from each other, the torsion spring 36 installed in the packaging ring 4 will release elastic potential energy, pushing the swing ring 6 to flip 180°, so that the swing ring 6 rotates to the other side of the packaging ring 4. Of course, because the rubber film 37 is fixed to the swing ring 6 Therefore, after the swing ring 6 is flipped, it will pull the rubber film 37 to rotate, covering the inner mirror of the telephoto lens to prevent it from being affected by external dust. Of course, when the telephoto lens is reconnected, the external gear 7 is pushed to rotate, and the swing ring 6 is driven by the external gear 7 to rotate to its original position. Of course, the rubber film 37 will also be brought back into the packaging ring 4. At the same time, the rotating swing ring 6 will also drive the torsion spring 36 to rotate, so that it can generate elastic potential energy to push the swing ring 6 to flip when the lens is replaced next time. The disconnected inner mirror is quickly protected to avoid being exposed to the external wind and sand environment, ensuring that the telephoto lens can be quickly switched in harsh environments.

[0039] A camera module includes the above-mentioned telephoto lens and also includes a telephoto lens. An image sensor is provided in a camera housing 1. A mounting box 3 is fixedly installed on the camera housing 1. Two symmetrically arranged isolation plates 9 are rotatably connected in the mounting box 3. When the two isolation plates 9 are close to each other, the isolation plates 9 divide the mounting box 3 into an inner layer 302 and an outer layer 301. The image sensor is arranged on a side close to the inner layer 302. A pushing member is provided in the mounting box 3. When the telephoto lens and the camera module are installed together, the outer shell sleeve 2 pushes the two isolation plates 9 to separate from each other through the pushing member. At the same time, the pushing member pushes the swing ring 6 to flip and open the telephoto lens. When the telephoto lens and the camera module are separated, the pushing member pushes the swing ring 6 to flip and close the telephoto lens. The pushing member drives the two isolation plates 9 to move closer to each other.

[0040] The camera module includes some electronic components such as telephoto lens, telephoto lens, image sensor and internal circuit. The light of the photographed scene passes through the telephoto lens, and after the infrared is filtered out by the filter, the visible light is projected onto the image sensor chip to convert it into a digital signal. Of course, because the image sensor is an electronic component, it has more stringent requirements on the environment. Once dust adheres to the surface of the sensor, it will block part of the photosensitive element, resulting in shadows on the image. These shadows will reduce the overall contrast of the image, making the image look not clear enough, and will also lead to a reduction in detail resolution: the shadows formed by dust will cover up the image details, resulting in a decrease in image resolution. This effect is particularly obvious when shooting scenes that require high definition. Once dust adheres to the sensor, the dust particles on the sensor can only be blown out by blowing, so special attention should be paid when replacing the lens, and the above structure When in use, when the telephoto lens is replaced, when the telephoto lens is disconnected from the camera housing 1 and remains in the installation box 3, the isolation plates 9 on both sides move closer to each other, dividing the installation box 3 into two layers, inner and outer layers, and isolating some camera elements such as the image sensor in the inner layer 302 for protection, thereby avoiding direct contact between the interior of the camera housing 1 and the external air. During specific use, when the telephoto lens is separated from the camera module, the pushing member will push the two isolation plates 9 to rotate due to the separation of the telephoto lens, and the rotating isolation plates 9 move closer to the middle to isolate the inner layer 302 and the outer layer 301. When the telephoto lens and the camera module are installed together, the telephoto lens enters the installation box 3 and pushes the pushing member to operate, so that the pushing member drives the external gear 7 to rotate while driving the isolation plates 9 on both sides to close to the middle, thereby protecting the image sensor and internal circuit in the camera housing 1 from being affected, thereby ensuring the overall quality of the image after shooting.

[0041] The pushing member includes an internal gear 13, an external gear 7, a pushing frame 18, an internal rack 10, an external rack 11, and a first compression spring 12. The internal gear 13 is installed on the rotating shaft of the isolation plate 9, and the pushing frame 18 is slidably connected in the installation box 3. Two symmetrically arranged internal racks 10 are fixedly installed on one side of the pushing frame 18. The one-third section of the internal rack 10 close to the pushing frame 18 is not provided with a locking tooth. The internal rack 10 cooperates with the internal gear 13. The external rack 10 is fixedly installed on the other side of the pushing frame 18. The external gear 7 is fixedly installed on the rotating shaft of the swing ring 6. The external rack 11 cooperates with the external gear 7. The first compression spring 12 is installed in the installation box 3. One side of the first compression spring 12 abuts against the pushing frame 18. The elastic coefficient of the first compression spring 12 is greater than the elastic coefficient of the torsion spring 36.

[0042] When the telephoto lens is installed on the camera housing 1, the telephoto lens will first enter the installation box 3 and push the push frame 18 in the installation box 3 to move. Because the external rack 11 is fixedly installed on one side of the push frame 18, the external rack 11 will contact the external gear 7, and the telephoto lens is still entering the installation box 3. Because the elastic strength of the first compression spring 12 is greater than the elastic strength of the torsion spring 36, the external rack 11 will first push the external gear 7 to rotate. When the swing ring 6 rotates to the other side, the housing of the telephoto lens will continue to push the push frame 18 to move and squeeze the first compression spring 12, so that the internal rack 10 on the push frame 18 drives the internal gear 13 to rotate, so that the internal gear 13 drives The isolation plate 9 is flipped to both sides so that the inner layer 302 is connected to the outer layer 301. At this time, the camera housing 1 will be connected to the telephoto lens. When the telephoto lens is replaced, the telephoto lens is taken out of the installation box 3. At this time, the compression spring will push the push frame 18 back to its original position. At this time, the internal rack 10 drives the isolation plate 9 to move closer to the middle through the internal gear 13, so that the inner layer 302 and the outer layer 301 are isolated from each other. The action of installing the telephoto lens pushes the isolation plates 9 on both sides to open or close before the telephoto lens leaves the installation box 3, ensuring that external dust cannot enter the inner layer 302 to interfere with the electronic components in the camera housing 1, thereby ensuring the overall quality of the works shot by the camera module during shooting.

[0043] A placement groove 14 is provided on one side of the installation box 3. After the isolation plate 9 is separated and opened to both sides, the isolation plate 9 enters the placement groove 14. A plurality of limit rods 15 are fixedly installed in the placement groove 14. The limit rods 15 are all slidably connected with guide blocks 16. The limit rods 15 are installed with second compression springs 24 that abut against the guide blocks 16. A cleaning plate 17 is rotatably connected between the guide blocks 16 on both sides. A rubber wheel 23 is fixedly installed on the rotating shaft of the cleaning plate 17. The rubber wheel 23 is in contact with the installation box 3. The wall is abutted, and a dust exhaust window 26 is provided on the inner wall of the installation box 3. A dustproof plate 25 that fits therewith is abutted on the dust exhaust window 26. The dustproof plate 25 is fixedly installed with a round rod and a guide block 16. A push plate 22 is slidably connected in the placement groove 14. An inclined through groove 27 is provided on the push plate 22. A push column 28 is provided in the through groove 27. The push column 28 is rotatably connected to the guide block 16. When the outer shell sleeve 2 enters the installation box 3, the push frame 18 abuts against the push plate 22.

[0044] Of course, during actual use, a small amount of dust particles will adhere to the isolation plate 9. After long-term use, the dust on the isolation plate 9 will fly when it is flipped over, and enter the inner layer 302 of the installation box 3 through the gap where the isolation plate 9 has not been flipped over and closed, and adhere to the image sensor. Therefore, the dust particles on the isolation plate 9 need to be cleaned after use. After the isolation plate 9 is flipped over, it enters the placement groove 14, and the placement groove 14 is closed, so that a closed space is formed between the placement groove 14 and the isolation plate 9. By cleaning the dust particles on the isolation plate 9 in the closed space, it is prevented from flying to the inner layer 302 of the installation box 3. After the telephoto lens enters the installation box 3, the pushing frame 18 is pushed to move to one side, and the moving pushing frame 18 drives the pushing plate 22 to move. Because the pushing column 28 slides in the through groove 27 opened on the pushing plate 22, the pushing column 28 is moved when the pushing plate 22 moves. The position of the body will change, and the through groove 27 will tilt to one side, so the pushing column 28 will move downward, and the moving pushing column 28 will drive the cleaning plate 17 rotating thereon to move. Of course, when the cleaning plate 17 moves up, because a rubber wheel 23 is provided and the cleaning plate 17 is rotatably installed thereon, the rubber wheel 23 will drive the cleaning plate 17 to flip downward and away from the approaching isolation plate 9, and when the cleaning plate 17 moves downward, the rubber wheel 23 will drive the cleaning plate 17 to flip upward, so that the cleaning plate 17 is close to the surface of the isolation plate 9, and the dust particles on the surface of the isolation plate 9 will be scraped off during the downward movement of the cleaning plate 17. Of course, the scraped dust particles will be discharged through the dust exhaust window 26, and the dustproof plate 25 will be opened during the downward movement of the guide block 16, so that the dust particles will be discharged. By removing the dust particles on the isolation plate 9, the normal operation of the image sensor inside the camera device is guaranteed.

[0045] A storage chamber 29 is provided in the isolation plate 9, and a diaphragm 31 is provided in the storage chamber 29. Metal wires 32 are fixedly installed at both ends of the diaphragm 31. Two rotating rods 30 are rotatably connected in the storage chamber 29. The metal wires 32 are sleeved on the rotating rods 30. The central axis of one of the rotating rods 30 is on the same axis as the rotating axis of the isolation plate 9. A torsion spring 36 is installed on the rotating rod 30, and one end of the torsion spring 36 is fixedly installed on the rotating rod 30. A pushing block 35 is threadedly installed on the rotating rod 30. The pushing block 35 is slidably connected in the storage chamber 29. After the rotating rod 30 rotates a specified number of times, the protrusion on the pushing block 35 abuts against the torsion spring 36, and the rotating rod 30 extends to the outside of the isolation plate 9 and is fixedly installed with the internal gear 13.

[0046] During specific use, after the isolation plates 9 are brought close to each other to block the entry of dust, they will be covered with dust particles. When they are flipped into the placement groove 14, the dust particles on the isolation plates 9 will continue to spread into the air during their swinging process. Therefore, it is necessary to isolate the isolation plates 9 during rotation. Specifically, when the internal rack 10 pushes the internal gear 13 to rotate, it will first push the rotating rod 30 on one side of the storage chamber 29 to rotate, and the rotation drives the metal wire 32 and the diaphragm 31 sleeved thereon to rotate. Of course, because the rotating rod 30 is equipped with a torsion spring 36 and a pushing block 35, the torsion spring 36 and the pushing block 35 do not contact each other, so at this time the diaphragm 31 rotates to the specified position to cover the isolation plate. 9 outer surface, when the rotating rod 30 drives the pushing block 35 to rise to the specified position, it will drive the outer isolation plate 9 to rotate, so that the isolation plate 9 rotates to the specified position. Of course, because the isolation plate 9 has been rotated to the set position and cannot continue to rotate, the rotating rod 30 will compress the torsion spring 36 at this time, and continue to drive the metal wire 32 and the film to rotate, so as to open the outer surface of the isolation plate 9. Because the isolation plate 9 is located in the placement groove 14 at this time, the dust particles can be removed after the diaphragm 31 is opened, so as to avoid the isolation plate 9 fanning the dust particles to suspend in the installation box 3 during movement, and prevent them from adhering to the image sensor, thereby ensuring the normal operation of the image sensor inside the camera device.

[0047] A rubber bucket 19 is fixedly installed at the opening of the installation box 3, and a plurality of fixed half rings 21 are arranged inside the installation box 3, and two fixed half rings 21 are arranged up and down. A long rod 20 is hinged inside the installation box 3, and one end of the long rod 20 is rotatably connected to the fixed half ring 21, and a silicone pad is fixedly installed on the other end of the long rod 20.

[0048] When the telephoto lens is placed in the mounting box 3, it is necessary to make the telephoto lens pass through the rubber bucket 19 and then go deeper into the mounting box 3. The rubber bucket 19 is made of elastic material, so it wraps the outer shell of the telephoto lens after the telephoto lens enters the mounting box 3 to prevent dust particles carried by the outer shell from entering the mounting box 3. Of course, as the telephoto lens continues to move, it will push the long rod 20 to flip, and push the fixing half rings 21 to move closer to each other to further fix the telephoto lens entering the mounting box 3. The rubber bucket 19 is also used to seal the connection between the telephoto lens and the mounting box 3.

[0049] An inner inclined surface 33 is provided on the side wall of the isolation plate 9 on one side close to the isolation plate 9 on the other side, and an outer inclined surface 34 is provided on the side wall of the isolation plate 9 on the other side close to the isolation plate 9 on the one side. When the two isolation plates 9 are close to each other, the inner inclined surface 33 fits with the outer inclined surface 34, and the relative positions of the teeth on the corresponding internal racks 10 on both sides are different. When the internal racks 10 on both sides move at the same time to engage with the internal gears 13, the internal rack 10 on one side first pushes the isolation plate 9 with the outer inclined surface 34 to rotate.

[0050] The arrangement of the inner inclined surface 33 and the outer inclined surface 34 makes the connection between the two isolation plates 9 more tightly sealed, further preventing external dust particles and humid air from entering the interior of the camera device. Of course, due to the staggered arrangement, one of the isolation plates 9 needs to be flipped first, and then the isolation plate 9 on the other side is flipped. By adjusting the relative position of the teeth on the internal rack 10, the internal rack 10 on one side first pushes the internal gear 13 to rotate. By switching different flipping times, the sealing degree of the inner layer 302 of the mounting box 3 is further guaranteed, thereby ensuring the normal operation of the image sensor inside the camera device and ensuring the image resolution of the work captured by the camera.

[0051] The rubber wheel 23 is provided with evenly arranged scales 5. When the rubber wheel 23 rotates upward, the scales 5 are tightly attached to the surface of the rubber wheel 23. When the rubber wheel 23 rotates downward, the scales 5 are in contact with the inner wall of the installation box 3. During the rotation of the rubber wheel 23, the scales 5 provided thereon enable the rubber wheel 23 to tightly attach to the surface of the rubber wheel 23 when the rubber wheel 23 rotates upward, thereby reducing the friction between the scales 5 and the surface of the installation box 3. When the rubber wheel 23 rotates downward, because the scales 5 are arranged downward, the rubber wheel 23 will push the scales 5 thereon to press against the surface of the installation box 3 to form a certain friction force, thereby ensuring that the cleaning plate 17 can tightly fit the isolation plate 9 for cleaning.

[0052] When in use, the telephoto lens is placed in the installation box 3, and the telephoto lens needs to pass through the rubber bucket 19 and then go deeper into the installation box 3. The rubber bucket 19 is made of elastic material, so it wraps the outer shell of the telephoto lens after the telephoto lens enters the installation box 3 to prevent dust particles from entering the installation box 3 with the outer shell.

[0053] At this time, the telephoto lens will first push the pushing frame 18 in the installation box 3 to move. Because the external rack 11 is fixedly installed on one side of the pushing frame 18, the external rack 11 will contact the external gear 7, and the telephoto lens is still constantly entering the installation box 3. Because the elastic strength of the first compression spring 12 is greater than the elastic strength of the torsion spring 36, the external rack 11 will first push the external gear 7 to rotate 180°. The external gear 7 drives the swing ring 6 to rotate, and pulls the rubber film 37 wrapped around the inner mirror of the telephoto lens back into the packaging ring 4, so that the inner mirror of the telephoto lens can be unfolded.

[0054] When the swing ring 6 rotates to the other side, the outer shell of the telephoto lens will continue to push the push frame 18 to move and squeeze the first compression spring 12, so that the internal rack 10 on the push frame 18 drives the internal gear 13 to rotate, and the internal gear 13 drives the isolation plate 9 to flip to both sides, so that the inner layer 302 is connected with the outer layer 301. It should be noted that because it is staggered, one of the isolation plates 9 needs to be flipped first, and then the isolation plate 9 on the other side is flipped. By adjusting the relative position of the teeth on the internal rack 10, the internal rack 10 on one side first pushes the internal gear 13 to rotate, and the internal gear 13 drives the isolation plate 9 to flip to both sides, so that the inner layer 302 is connected with the outer layer 301.

[0055] When the internal rack 10 pushes the internal gear 13 to rotate, it will first push the rotating rod 30 on one side of the storage chamber 29 to rotate, and the rotation will drive the metal wire 32 and the diaphragm 31 mounted thereon to rotate. Of course, because a torsion spring 36 is installed on the rotating rod 30, after the diaphragm 31 rotates to the specified position to cover the outer surface of the isolation plate 9, it will drive the outer isolation plate 9 to rotate, so that the isolation plate 9 rotates to the specified position. Of course, because the isolation plate 9 has rotated to the set position and cannot continue to rotate, the rotating rod 30 will compress the torsion spring 36 at this time, and continue to drive the metal wire 32 and the film to rotate, and open the outer surface of the isolation plate 9. Because the isolation plate 9 is located in the placement groove 14 at this time, dust particles can be removed after the diaphragm 31 is opened.

[0056] At this time, the telephoto lens will continue to move toward the inside of the installation box 3, pushing the push frame 18 to move to one side, and the moving push frame 18 drives the push plate 22 to move. Because the push column 28 slides in the through groove 27 provided on the push plate 22, the specific position of the push column 28 will change when the push plate 22 moves, and the through groove 27 is inclined to one side, so the push column 28 will move downward, and the moving push column 28 drives the cleaning plate 17 rotating thereon to move. Of course, when the cleaning plate 17 moves upward, because the rubber wheel 23 is provided and the cleaning plate 17 is rotatably installed thereon, Therefore, the rubber wheel 23 will drive the cleaning plate 17 to flip downward and away from the approaching isolation plate 9. When the cleaning plate 17 moves downward, the rubber wheel 23 will drive the cleaning plate 17 to flip upward, so that the cleaning plate 17 is close to the surface of the isolation plate 9. In the process of the cleaning plate 17 moving downward, the dust particles on the surface of the isolation plate 9 will be scraped off. At the same time, because the cleaning plate 17 and, of course, the scraped dust particles will be discharged through the dust exhaust window 26. In the process of the guide block 16 moving downward, the dustproof plate 25 will also be driven to open, so the dust particles will be discharged, and the dust particles on the isolation plate 9 will be cleared.

[0057] When the telephoto lens needs to be replaced, the telephoto lens is continuously withdrawn from the installation box 3. At this time, the compression spring will push the push frame 18 back to its original position. The moving telephoto lens drives the external gear 7 to continuously move away from the external rack 11. The torsion spring 36 installed in the packaging ring 4 will release elastic potential energy, pushing the swing ring 6 to flip 180°, so that the swing ring 6 rotates to the other side of the packaging ring 4. Of course, because the rubber film 37 is fixedly installed with the swing ring 6, the swing ring 6 will pull the rubber film 37 to rotate after flipping, covering the inner mirror of the telephoto lens. Of course, at this time, the internal rack 10 drives the isolation plate 9 to move closer to the middle through the internal gear 13, so that the inner layer 302 and the outer layer 301 are separated from each other.

[0058] The second compression spring 24 on one side will also push the pushing plate 22 back to its original position, and drive the clearing plate 17 connected to the pushing column 28 and the guide block 16 back to its original position through the through groove 27. Of course, when the rubber wheel 23 rotates upward, the rubber wheel 23 will drive the clearing plate 17 to flip downward and away from the approaching isolation plate 9.

[0059] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A telephoto lens, comprising an outer shell sleeve (2), wherein a plurality of lenses are fixedly mounted in the outer shell sleeve (2), characterized in that: A packing ring (4) is fixedly mounted on the outer shell sleeve (2). The packing ring (4) is arranged at a position close to the connection between the outer shell sleeve (2) and the camera module. A swing ring (6) is arranged inside the packing ring (4). The swing ring (6) is rotatably connected to the packing ring (4) and the outer shell sleeve (2). A pushing member is installed on the rotating shaft of the swing ring (6). A rubber film (37) is arranged inside the packing ring (4). One side of the rubber film (37) is fixedly mounted on the inner wall of the packing ring (4), and the other side of the rubber film (37) is fixedly mounted on the side wall of the swing ring (6). The pushing member pushes the swing ring (6) to flip. A torsion spring connected to the packing ring (4) is installed on the swing ring (6).

2. A camera module, the camera module being equipped with the telephoto lens according to claim 1, comprising a camera housing (1), wherein an image sensor is arranged in the camera housing (1), characterized in that The camera housing (1) is fixedly mounted with a mounting box (3), and two symmetrically arranged isolation plates (9) are rotatably connected in the mounting box (3). When the two isolation plates (9) are brought close to each other, the isolation plates (9) divide the mounting box (3) into an inner layer (302) and an outer layer (301). The image sensor is arranged on a side close to the inner layer (302). The pushing member is arranged in the mounting box (3). When the telephoto lens and the camera module are mounted together, the housing sleeve (2) pushes the two isolation plates (9) to separate from each other through the pushing member. At the same time, the pushing member pushes the swing ring (6) to flip and open the telephoto lens. When the telephoto lens and the camera module are separated, the pushing member pushes the swing ring (6) to flip and close the telephoto lens. The pushing member drives the two isolation plates (9) to move close to each other.

3. A camera module according to claim 2, characterized in that The pushing member comprises an internal gear (13), an external gear (7), a pushing frame (18), an internal rack (10), an external rack (11), and a first compression spring (12). The internal gear (13) is installed on the rotating shaft of the isolation plate (9). The pushing frame (18) is slidably connected in the installation box (3). Two symmetrically arranged internal racks (10) are fixedly installed on one side of the pushing frame (18). A third section of the internal rack (10) close to the pushing frame (18) is not provided with a locking tooth. The inner rack (10) cooperates with the inner gear (13), an outer rack (11) is fixedly mounted on the other side of the pushing frame (18), an outer gear (7) is fixedly mounted on the rotating shaft of the swing ring (6), the outer rack (11) cooperates with the outer gear (7), a first compression spring (12) is installed in the installation box (3), one side of the first compression spring (12) is in contact with the pushing frame (18), and the elastic coefficient of the first compression spring (12) is greater than the elastic coefficient of the torsion spring (36).

4. A camera module according to claim 3, characterized in that A placement groove (14) is provided on one side of the installation box (3). After the isolation plate (9) is separated and opened to both sides, the isolation plate (9) enters the placement groove (14). A plurality of limit rods (15) are fixedly installed in the placement groove (14). The limit rods (15) are all slidably connected with guide blocks (16). The limit rods (15) are installed with second compression springs (24) abutting against the guide blocks (16). A clearing plate (17) is rotatably connected between the guide blocks (16) on both sides. A rubber wheel (23) is fixedly installed on the rotating shaft of the clearing plate (17). The rubber wheel (23) is in contact with the installation box (3). The installation box (3) is abutted against the wall, a dust exhaust window (26) is provided on the inner wall of the installation box (3), a dustproof plate (25) matching with the dust exhaust window (26) is abutted against the dust exhaust window (26), the dustproof plate (25) is fixedly installed with a round rod and a guide block (16), a push plate (22) is slidably connected in the placement groove (14), an inclined through groove (27) is provided on the push plate (22), a push column (28) is provided in the through groove (27), and the push column (28) is rotatably connected to the guide block (16), when the outer shell sleeve (2) enters the installation box (3), the push frame (18) abuts against the push plate (22).

5. A camera module according to claim 4, characterized in that The isolation plate (9) is provided with a storage chamber (29), a diaphragm (31) is provided in the storage chamber (29), both ends of the diaphragm (31) are fixedly installed with metal wires (32), two rotating rods (30) are rotatably connected in the storage chamber (29), the metal wires (32) are sleeved on the rotating rods (30), the central axis of one of the rotating rods (30) is on the same axis as the rotating axis of the isolation plate (9), a torsion spring (36) is installed on the rotating rod (30), one end of the torsion spring (36) is fixedly installed on the rotating rod (30), a pushing block (35) is installed on the rotating rod (30) through a thread, and the pushing block (35) is slidably connected in the storage chamber (29), after the rotating rod (30) rotates a specified number of times, the protrusion on the pushing block (35) abuts against the torsion spring (36), and the rotating rod (30) extends to the outside of the isolation plate (9) and is fixedly installed with the internal gear (13).

6. A camera module according to claim 5, characterized in that A rubber bucket (19) is fixedly installed at the opening of the installation box (3), a plurality of fixed half rings (21) are arranged inside the installation box (3), two of the fixed half rings (21) are arranged up and down, a long rod (20) is hinged inside the installation box (3), one end of the long rod (20) is rotatably connected to the fixed half ring (21), and a silicone pad is fixedly installed on the other end of the long rod (20).

7. A camera module according to claim 2, characterized in that The isolation plate (9) on one side is provided with an inner inclined surface (33) on the side wall close to the isolation plate (9) on the other side, and the isolation plate (9) on the other side is provided with an outer inclined surface (34) on the side wall close to the isolation plate (9) on one side. When the two isolation plates (9) are brought close to each other, the inner inclined surface (33) fits with the outer inclined surface (34). The relative positions of the teeth on the corresponding internal racks (10) on both sides are different. When the internal racks (10) on both sides move at the same time to mesh with the internal gear (13), the internal rack (10) on one side first pushes the isolation plate (9) with the outer inclined surface (34) to rotate.

8. A camera module according to claim 4, characterized in that The rubber wheel (23) is provided with evenly arranged scales (5). When the rubber wheel (23) rotates upward, the scales (5) are tightly attached to the surface of the rubber wheel (23). When the rubber wheel (23) rotates downward, the scales (5) abut against the inner wall of the installation box (3).

Images