Curved prism telephoto lens and camera module

Abstract

The invention relates to the field of optical devices, and discloses a curved prism telephoto lens, which comprises a lens body with a built-in curved prism and a connector, the outer wall of the lens body is fixedly connected with a protection pad, the outer wall of the lens body is fixedly connected with a plurality of extension rods, the inner wall of each extension rod is provided with a second spring, and the inner wall of each extension rod is provided with a first spring. The outer portion of the extension rod is rotationally connected with a worm, a positioning groove is formed in the inner wall of the extension rod, the inner wall of the worm is in threaded connection with a stress rod, the stress rod is slidably connected to the inner wall of the positioning groove, a shielding assembly is installed at one end of the worm, and a winding assembly is installed on the inner wall of the protection pad. Through the structural design of combining the extension rod, the worm and the shielding assembly, the dust-free cloth is gradually opened to cover the light inlet end of the lens, so that the lens can be automatically protected, additional manual operation is not needed, and the lens is prevented from being damaged by external pollutants.

Description

Technical Field

[0001] The present invention relates to the technical field of optical devices, and in particular to a curved prism telephoto lens and a camera module. Background Art

[0002] With the continuous advancement of camera technology, image quality and stability have become increasingly important requirements. In fields such as professional photography, security surveillance, and medical imaging, lens cleaning and protection have a direct impact on the quality of the footage. Traditional lens protection methods rely primarily on manual operation, such as manually covering the lens surface to prevent the ingress of dust and other contaminants. However, this method not only requires frequent manual operation but is also prone to inadvertent failure to effectively protect the lens, thereby compromising image quality.

[0003] To address this issue, automated lens protection designs have gradually emerged on the market. These designs typically utilize a mechanical actuator to automatically open and close the protective cover during lens use, preventing imaging issues caused by environmental contamination. However, existing automated protection systems often have limitations due to complex structures, inflexible operation, and high costs. Furthermore, most existing protection mechanisms rely solely on external control or triggering, still requiring some manual intervention. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a curved prism telephoto lens and a camera module, which solves the problem of how to achieve automatic shielding and protection of the light input end and avoid human intervention during the existing lens connection process.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a curved prism telephoto lens, comprising a lens body with a built-in curved prism and a connector, the outer wall of the lens body is fixedly connected to a protective pad, the outer wall of the lens body is fixedly connected to a plurality of extension rods, the inner wall of the extension rod is provided with a second spring, the outer side of the extension rod is rotatably connected to a worm, the inner wall of the extension rod is provided with a positioning groove, the inner wall of the worm is threadedly connected to a force-bearing rod, the force-bearing rod is slidably connected to the inner wall of the positioning groove, one end of the worm is installed with a shielding assembly, and the inner wall of the protective pad is installed with a winding assembly.

[0006] Preferably, the shielding assembly includes a screw rod, which is rotatably connected to the inner wall of the protective pad, and the outer wall of the screw rod is fixedly connected to multiple worm gears, the outer wall of the screw rod is threadedly connected to a threaded ring, and the adjacent sides of the multiple threaded rings are fixedly connected to a pull plate, the inner wall of the protective pad is rotatably connected to a winding rod, and the outer wall of the winding rod is covered with a dust-free cloth, one end of the dust-free cloth is connected to the pull plate and is slidably connected to the light input end of the lens body, and an extrusion assembly is provided at one end of the shielding assembly.

[0007] Preferably, the winding assembly includes a spring, which is arranged at both ends of the inner wall of the protective pad, and the outer ring and inner ring of the spring are connected to the dust-free cloth and the winding rod respectively.

[0008] Preferably, the extrusion assembly includes a sliding rod, and a plurality of the sliding rods are slidably connected to the inner wall of the protective pad. The inner wall of the protective pad is provided with a plurality of third springs, one end of the third spring is connected to the sliding rod, and the inner wall of the sliding rod is rotatably connected to a rotating wheel.

[0009] Preferably, the pulling plate is movably connected to one end of the rotating wheel, the dust-free cloth is movably connected to one end of the rotating wheel, and the other end is connected to the light input end of the lens body.

[0010] Preferably, one end of the connector is provided with a groove, and one end of the lens body is fixedly connected with a protrusion.

[0011] Preferably, one end of the connector is fixedly connected to a plurality of contact pads, and the force-bearing rod is slidably connected to one end of the contact pads.

[0012] Preferably, the worm and the worm wheel are meshingly connected, and the worm is rotatably connected to the inner wall of the protective pad.

[0013] Preferably, the protection pad is slidably connected to one end of the connector and is engaged with the groove via a protrusion.

[0014] A camera module comprises a connector and an imaging component arranged opposite to the exit surface of a lens body.

[0015] Working principle: When using this curved prism telephoto lens, you need to first connect the connector and the lens body through the snap-in connection of the grooves and protrusions. During the connection process, as the distance between the lens body and the connector shortens, the force-bearing rod will be prompted to come into contact with the contact pad, thereby pushing the force-bearing rod to slide inside the extension rod and driving the worm to rotate through a threaded connection. After rotation, the screw connected to the worm gear can be driven to rotate through the meshing connection, and after rotation, the rod pull plate is driven through the threaded connection to pull the dust-free cloth arranged on the outer wall of the winding rod upward, thereby achieving the effect of gradually opening the covering of the light-incoming surface of the lens body as the distance between the force-bearing rod shortens, thereby automatically completing the protection of the light-incoming surface lens in a non-connected state.

[0016] In actual use, when the connector is disconnected from the lens body, the negative pressure exerted by the multiple second springs on the force-bearing rod pushes the worm in the opposite direction, pulling the dust-free cloth to completely cover and protect one end of the lens body. During the reset process, the dust-free cloth is squeezed by the third springs connected to the multiple rotating wheels, pressing it against the lens surface for cleaning. To prevent friction during the sliding of the pull plate, the pull plate is made of a relatively hard resin material, while the dust-free cloth is made of polyester fiber. Therefore, the pressure from the multiple dust-free cloths forces the dust-free cloth to adhere to the light-incoming surface of the lens body.

[0017] The present invention provides a curved prism telephoto lens and a camera module. It has the following beneficial effects: 1. This invention utilizes a structural design that combines an extension rod, a worm gear, and a shielding assembly. During the connection between the connector and the lens body, the force-bearing rod drives the worm gear to rotate, which in turn drives the lead screw and pull plate to move, gradually opening the dust-free cloth to cover the lens' light-incoming end. This design automatically protects the lens without requiring additional manual operation, ensuring that the lens is protected from external contaminants.

[0018] 2. After the connector is disconnected from the lens body, the second spring, through negative pressure, pushes the worm in the opposite direction, pulling the dust-free cloth to cover the lens' light-incoming surface. During the reset process, the third spring, connected to multiple rotating wheels, compresses the dust-free cloth, ensuring that the dust-free cloth adheres tightly to the lens' light-incoming surface and completes the wiping function. This design not only ensures lens cleanliness but also prevents scratches or damage caused by manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the explosion of the structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the protection pad of the present invention; Figure 4 Schematic diagram of the screw rod connection structure of the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the extension rod of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the protection pad of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A.

[0020] Among them, 1. Connector; 2. Lens body; 3. Groove; 4. Contact pad; 5. Protective pad; 6. Extension rod; 7. Winding rod; 8. Spring; 9. Bump; 10. Dust-free cloth; 11. Screw; 12. Worm; 13. Worm gear; 14. Threaded ring; 15. Pull plate; 16. Second spring; 17. Force rod; 18. Third spring; 19. Sliding rod; 20. Rotating wheel. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Please see the attached Figure 1 -Attached Figure 7 The embodiment of the present invention provides a curved prism telephoto lens, comprising a lens body 2 with a built-in curved prism and a connector 1. The outer wall of the lens body 2 is fixedly connected to a protective pad 5. The outer wall of the lens body 2 is fixedly connected to a plurality of extension rods 6. The inner wall of the extension rod 6 is provided with a second spring 16. The outer portion of the extension rod 6 is rotatably connected to a worm 12. The inner wall of the extension rod 6 is provided with a positioning groove. The inner wall of the worm 12 is threadedly connected to a force-bearing rod 17. The force-bearing rod 17 is slidably connected to the inner wall of the positioning groove. A shielding component is installed at one end of the worm 12. A winding assembly The components include a clockwork spring 8, which is arranged at both ends of the inner wall of the protective pad 5, and its outer ring and inner ring are respectively connected to the dust-free cloth 10 and the winding rod 7. A groove 3 is provided at one end of the connector 1, and a protrusion 9 is fixedly connected to one end of the lens body 2. A plurality of contact pads 4 are fixedly connected to one end of the connector 1. The force rod 17 is slidably connected to one end of the contact pad 4, and the worm 12 is meshed with the worm wheel 13. The worm 12 is rotatably connected to the inner wall of the protective pad 5, and the protective pad 5 is slidably connected to one end of the connector 1 and is engaged with the groove 3 through the protrusion 9.

[0023] Specifically, when using the present curved prism telephoto lens, it is first necessary to connect the connector 1 to the lens body 2. This connection process is completed by the mutual engagement of the groove 3 on the connector 1 and the protrusion 9 on the lens body 2. The connection between the connector 1 and the lens body 2 not only ensures the stability of the lens system, but also makes subsequent operations more convenient and reliable. During the process of completing the connection between the connector 1 and the lens body 2, as the distance between the lens body 2 and the connector 1 gradually shortens, the movement of the connector 1 will trigger a series of mechanical actions. As the distance between the lens body 2 and the connector 1 decreases, the force-bearing rod 17 comes into contact with the contact pad 4. The contact between the contact pad 4 and the force-bearing rod 17 triggers subsequent actions and prompts the force-bearing rod 17 to slide inside the extension rod 6.

[0024] The sliding motion of the force-bearing rod 17 drives the worm 12 to rotate through its threaded connection. The rotation of the worm 12 directly drives the worm gear 13, which, through the threaded connection, drives the screw 11, thereby promoting subsequent operations. The rotation of the worm gear 13 drives the screw 11, which in turn drives the lever plate 15 to move. The movement of the lever plate 15 directly affects the upward movement of the dust-free cloth 10, which is placed on the outer wall of the winding rod 7.

[0025] The shielding assembly includes a screw rod 11, which is rotatably connected to the inner wall of the protective pad 5, and a plurality of worm gears 13 are fixedly connected to the outer wall of the screw rod 11. The outer wall of the screw rod 11 is threadedly connected to a threaded ring 14, and a pull plate 15 is fixedly connected to the adjacent side of the plurality of threaded rings 14. The inner wall of the protective pad 5 is rotatably connected to the winding rod 7, and the outer wall of the winding rod 7 is covered with a dust-free cloth 10. One end of the dust-free cloth 10 is connected to the pull plate 15 and is slidably connected to the light-incoming end of the lens body 2.

[0026] Specifically, the outer wall of the screw 11 is threadedly connected with a plurality of threaded rings 14, which can move along the rotation direction of the screw 11, thereby driving the pull plate 15 connected thereto to make corresponding displacements. The design of the pull plate 15 is closely matched with the threaded ring 14, ensuring that the pull plate 15 can slide smoothly and will not get stuck when the screw 11 rotates. The other end of the pull plate 15 is connected to the winding rod 7 through the dust-free cloth 10. The winding rod 7 is fixed to the inner wall of the protective pad 5, and the rotation of the winding rod 7 directly drives the unfolding and reeling of the dust-free cloth 10.

[0027] The dust-free cloth 10 is placed on the outer wall of the winding rod 7 and is slidably connected to the light-incoming end of the lens body 2 via a pull plate 15. When the screw 11 begins to rotate, the threaded ring 14 and the pull plate 15 are linked by the drive of the worm gear 13. The movement of the pull plate 15 pulls the dust-free cloth 10 up or down, covering or uncovering the light-incoming end of the lens. This design allows the light-incoming end of the lens to be automatically shielded by the dust-free cloth 10 in a protected state, preventing dust and other external factors from entering the lens, ensuring lens cleanliness and optical stability during shooting.

[0028] The extrusion assembly includes a slide rod 19, multiple slide rods 19 are slidably connected to the inner wall of the protective pad 5, and multiple third springs 18 are provided on the inner wall of the protective pad 5. One end of the third spring 18 is connected to the slide rod 19, and the inner wall of the slide rod 19 is rotatably connected to the rotating wheel 20; the pull plate 15 is movably connected to one end of the rotating wheel 20, and the dust-free cloth 10 is movably connected to one end of the rotating wheel 20, and the other end is connected to the light input end of the lens body 2.

[0029] Specifically, multiple slide bars 19 within the extrusion assembly are slidably connected to the inner wall of the protective pad 5. These slide bars 19 are designed to slide freely within the tracks within the inner wall of the protective pad 5 to accommodate various operational requirements. One end of each slide bar 19 is connected to a third spring 18. The elastic design of this third spring 18 ensures that the slide bar 19 can move freely within a certain range and provides a resilient force under external pressure, ensuring balance and stability among the various components. This elastic design effectively resists external interference during operation, maintaining smooth operation of the entire assembly.

[0030] The inner wall of the slide bar 19 is connected by the rotation of the wheel 20. The wheel 20 acts as a driving component, and its interaction with the slide bar 19 effectively converts mechanical motion into displacement of the dust-free cloth 10. One end of the wheel 20 is connected to the pull plate 15 via a movable connection, and the other end is connected to the dust-free cloth 10. The design of the pull plate 15 allows it to move within a certain track as the wheel 20 rotates, thereby controlling the movement of the dust-free cloth 10. When the wheel 20 rotates, the pull plate 15 drives the dust-free cloth 10 to move, thereby covering or uncovering the light-incoming end of the lens body 2.

[0031] One end of the dust-free cloth 10 is fixedly connected to the rotating wheel 20, and the other end is connected to the light-incoming end of the lens body 2. This structure ensures that the dust-free cloth 10 can effectively cover the light-incoming end of the lens when the lens is not in use, preventing external contaminants such as dust and stains from entering the lens. Once the lens is needed, the dust-free cloth 10 can be gradually retracted as the pull plate 15 slides by simply driving the rotating wheel 20, exposing the light-incoming end of the lens and ensuring the normal operation of the optical system.

[0032] A camera module comprises a curved prism telephoto lens and an imaging component arranged opposite to a connector 1 and an exit surface of a lens body 2.

[0033] Specifically, the core component of this module is a curved prism telephoto lens. This lens optimizes the refraction path of light through a built-in curved prism, reducing some of the optical distortion seen in traditional lens designs and improving optical efficiency during telephoto imaging. Telephoto lenses are ideal for long-distance photography, providing a higher degree of detail. The curved prism design allows for better control of distortion over a wide range of focal lengths, particularly during telephoto shooting, ensuring clearer images with no noticeable chromatic aberration.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A curved prism telephoto lens, comprising a lens body (2) with a built-in curved prism and a connector (1), characterized in that: The outer wall of the lens body (2) is fixedly connected to a protective pad (5), the outer wall of the lens body (2) is fixedly connected to a plurality of extension rods (6), the inner wall of the extension rod (6) is provided with a second spring (16), the outer portion of the extension rod (6) is rotatably connected to a worm (12), the inner wall of the extension rod (6) is provided with a positioning groove, the inner wall of the worm (12) is threadedly connected to a force-bearing rod (17), the force-bearing rod (17) is slidably connected to the inner wall of the positioning groove, one end of the worm (12) is installed with a shielding assembly, and the inner wall of the protective pad (5) is installed with a winding assembly.

2. The curved prism telephoto lens according to claim 1, wherein: The shielding assembly comprises a screw rod (11), the screw rod (11) is rotatably connected to the inner wall of the protective pad (5), the outer wall of the screw rod (11) is fixedly connected to a plurality of worm gears (13), the outer wall of the screw rod (11) is threadedly connected to a threaded ring (14), and a pull plate (15) is fixedly connected to the adjacent side of the plurality of threaded rings (14), the inner wall of the protective pad (5) is rotatably connected to a winding rod (7), the outer wall of the winding rod (7) is provided with a dust-free cloth (10), one end of the dust-free cloth (10) is connected to the pulling plate (15), and is slidably connected to the light-incoming end of the lens body (2), and an extrusion assembly is provided at one end of the shielding assembly.

3. The curved prism telephoto lens according to claim 1, wherein: The winding assembly comprises a spring (8), which is arranged at both ends of the inner wall of the protective pad (5), and the outer ring and inner ring of the spring are respectively connected to the dust-free cloth (10) and the winding rod (7).

4. The curved prism telephoto lens according to claim 2, wherein: The extrusion assembly includes a slide rod (19), and a plurality of the slide rods (19) are slidably connected to the inner wall of the protection pad (5). The inner wall of the protection pad (5) is provided with a plurality of third springs (18), one end of the third spring (18) is connected to the slide rod (19), and the inner wall of the slide rod (19) is rotatably connected to a rotating wheel (20).

5. The curved prism telephoto lens according to claim 4, wherein: The pull plate (15) is movably connected to one end of the rotating wheel (20), the dust-free cloth (10) is movably connected to one end of the rotating wheel (20), and the other end is connected to the light-incoming end of the lens body (2).

6. The curved prism telephoto lens according to claim 1, wherein: One end of the connector (1) is provided with a groove (3), and one end of the lens body (2) is fixedly connected with a bump (9).

7. The curved prism telephoto lens according to claim 1, wherein: One end of the connector (1) is fixedly connected to a plurality of contact pads (4), and the force-bearing rod (17) is slidably connected to one end of the contact pad (4).

8. The curved prism telephoto lens according to claim 1, wherein: The worm (12) and the worm wheel (13) are meshingly connected, and the worm (12) is rotatably connected to the inner wall of the protection pad (5).

9. The curved prism telephoto lens according to claim 6, wherein: The protective pad (5) is slidably connected to one end of the connector (1) and is engaged with the groove (3) via the protrusion (9).

10. A camera module, characterized in that: The camera module comprises a curved prism telephoto lens as claimed in any one of claims 1 to 9, and an imaging component arranged opposite to the connector (1) and the exit surface of the lens body (2).

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