A detachable camera lens

Abstract

The utility model discloses a detachable camera lens, including lens barrel, set up in the lens barrel lens group and the focusing ring of setting in the lens barrel outside, the end of focusing ring is provided with a bayonet, is equipped with the connecting structure for being used to with the camera body connection on the bayonet, the connecting structure includes the clamping groove, limit slot and mortise of setting up on the bayonet, the mortise is located the side of clamping groove and the quantity of mortise corresponds with clamping groove. The utility model discloses through the collaborative design of unique clamping groove, limit slot and mortise, realized the stable reliable, positioning accurate connection between lens and body, ensured the connection accuracy and imaging stability. Meanwhile, the integration of focusing lock solidification design and the integration of the selfie mirror significantly improve the operation efficiency and functional diversity, and the cooperation guiding sealing structure further enhances the adaptability and durability of the lens in the complex environment.

Description

Technical Field

[0001] This utility model relates to the field of photographic equipment, specifically to a detachable camera lens. Background Technology

[0002] With the rapid development of imaging technology, photography and video equipment have been widely used in many fields such as professional creation, security monitoring, consumer electronics, and industrial inspection. As the core component of an optical imaging system, the lens's performance directly determines image quality and application range. To adapt to different shooting scenarios and needs, users often need to change lenses with different focal lengths, apertures, or special functions. Therefore, a reliable and convenient connection mechanism between the lens and the camera body has become crucial for improving the user experience and functional expandability of the equipment.

[0003] Currently, the mainstream detachable lens connection methods on the market include threaded connections and bayonet connections. While threaded connections are simple in structure, they are inefficient to install and remove; repeated twisting can cause thread wear, affecting positioning accuracy, and they struggle to achieve precise circumferential positioning, failing to meet the demands of scenarios like rapid capture. Existing bayonet connections, while improving installation and removal speed to some extent, still have room for structural optimization. For example, the locking and unlocking process of some bayonet structures is complex and user-unfriendly; more importantly, in terms of connection rigidity and stability, traditional bayonet designs may experience slight displacement or loosening under external impact or vibration, leading to optical axis misalignment, affecting image quality, and potentially even damaging the equipment due to an unreliable connection.

[0004] Therefore, there is a need in existing technologies for a lens connection structure that offers faster assembly and disassembly, more secure connections, and more precise positioning. The industry urgently needs an innovative solution that, while ensuring convenient and quick assembly and disassembly, significantly improves the connection strength and stability between the lens and the camera body through optimized mechanical structure design, ensuring durable and reliable optical performance under various harsh operating environments. Utility Model Content

[0005] To address the problems of inconvenient assembly and disassembly, and the tendency for minor movements and loosening of connections in existing detachable camera lens connection methods, this utility model provides a detachable camera lens, aiming to fundamentally improve the reliability of the connection.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A detachable camera lens is proposed, including a lens barrel, a lens group disposed within the lens barrel, and a focusing ring sleeved outside the lens barrel. The end of the focusing ring is provided with a bayonet, and the bayonet is provided with a connection structure for connecting to the camera body. The connection structure includes a slot, a limiting slot, and a tenon disposed on the bayonet. The tenons are disposed beside the slot, and the number of tenons corresponds to the number of slots.

[0008] Furthermore, the slot includes a first slot, a second slot, and a third slot, which are evenly distributed circumferentially along the mount. This even circumferential distribution of the three slots provides stable and balanced three-point support with the corresponding claws on the camera body, effectively preventing the lens from tilting or shifting within the mount, ensuring the perpendicularity of the optical axis to the sensor plane, and improving imaging stability.

[0009] Furthermore, the latch includes a first latch, a second latch, and a third latch, which are sequentially arranged adjacent to the first, second, and third slots. The addition of a latch next to each slot forms a slot-latch mating assembly, which enables more precise radial positioning and effectively prevents circumferential micro-movements between the lens and the camera body, enhancing connection rigidity and stability, and helping to maintain optical alignment accuracy under vibration conditions.

[0010] Furthermore, the circumferential position of the limiting groove is different from that of any of the slots. The limiting groove and the slot are staggered so that they can cooperate with the unique limiting pin on the camera body, which can prevent mistaken installation and ensure that the lens can only be installed in one correct direction, avoiding damage to the mount pins by accidental operation and ensuring accurate alignment of the electronic contacts.

[0011] Furthermore, the radial depths of the first, second, and third slots are greater than the radial depth of the limiting groove. This difference in depth gives the slots, which bear the main locking force, stronger structural strength and locking stroke, while the limiting groove, which only serves as a guide and anti-rotation function, is shallower. This optimizes the structural stress distribution of the bayonet and improves mechanical reliability.

[0012] Furthermore, the bayonet and the focusing ring are integrally formed.

[0013] Furthermore, the outer circumferential surface of the focusing ring is provided with anti-slip texture. The anti-slip texture significantly increases the friction between the user's hand and the focusing ring, enabling precise and non-slip focusing control even in humid, cold environments or during rapid operation, thus improving the human-computer interaction experience.

[0014] Furthermore, a small convex mirror is fixedly mounted on the front surface of the focusing ring facing the subject. This convex mirror serves as a selfie mirror, allowing users to directly observe their own image and compose shots in front of the lens, greatly facilitating selfies without relying on a camera screen or additional accessories, thus expanding the lens's usage scenarios.

[0015] Furthermore, the outer wall of the lens barrel is provided with a guide protrusion, and the inner wall of the focusing ring is provided with a guide groove that mates with the guide protrusion. The cooperation between the guide protrusion and the guide groove ensures that the focusing ring can only rotate circumferentially when rotating, without axial movement or radial runout, thereby ensuring smooth and accurate focusing action. Moreover, the lens assembly can be moved back and forth only through rotation, improving focusing accuracy and feel.

[0016] Furthermore, a sealing ring is provided between the focusing ring and the lens barrel. The sealing ring forms an effective sealing barrier at the dynamic interface between the focusing ring and the lens barrel, preventing dust and moisture from entering the lens from the outside, protecting the delicate optical and electronic components, and improving the lens's protection and durability in harsh environments.

[0017] The advantages of the detachable camera lens provided in this application are as follows:

[0018] The detachable camera lens provided in this application exhibits significant advantages in structure, function, and reliability. The lens is locked to the camera body via latches, slots, and limiting grooves, forming a rigid and high-precision locking system that effectively suppresses micro-movements caused by vibration, ensuring optical stability and image clarity. Its compact and integrated structure, combining the focus ring and the connecting mount into a single or adjacent design, allows users to perform focusing and locking operations in the same area without changing their grip, resulting in smooth human-computer interaction, particularly suitable for rapid shooting. Regarding motion stability, the guide structure and sealing ring between the focus ring and the lens barrel ensure both the linearity and smoothness of the focusing reciprocating motion, while also improving the lens's dust and moisture resistance, enhancing its adaptability and lifespan in complex environments. Furthermore, the convex mirror at the front of the focus ring provides users with a convenient self-portrait function, further expanding its usage scenarios. The overall design achieves a good balance between mechanical performance, operational efficiency, and environmental durability, comprehensively enhancing the product's practical value and competitiveness. Attached Figure Description

[0019] Figure 1 This is a perspective view of the detachable camera lens according to the present invention;

[0020] Figure 2 yes Figure 1 A stereoscopic image viewed from another angle by the camera lens shown;

[0021] Figure 3This is a schematic diagram of the assembly of the camera lens and the camera body according to a specific embodiment of the present invention;

[0022] Reference numerals: 1-Lens group; 2-Focusing ring; 3-Mount; 4-Lens barrel; 5-First slot; 6-Second slot; 7-Third slot; 8-Limiting groove; 9-Convex lens; 10-Groove; 11-First latch; 12-Second latch; 13-Third latch. Detailed Implementation

[0023] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description and illustrate illustrative specific embodiments in which the present invention may be practiced. In this regard, directional terms such as “top,” “bottom,” “left,” “right,” “up,” “down,” etc., are used with reference to the orientation of the described figures. Because components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0024] like Figure 1 and Figure 2 As shown, the camera lens includes a lens barrel 4, a lens group 1, a focus ring 2, and a bayonet 3. The lens barrel 4 is the core support structure of the lens, and the lens group 1 is fixedly mounted inside it by multiple lens mounts. The focus ring 2 is sleeved on the outside of the lens barrel 4 by a bearing structure, so that the focus ring 2 can rotate smoothly relative to the lens barrel 4.

[0025] To achieve precise linear motion, at least one axial guide protrusion is provided on the outer wall of the lens barrel 4, and a guide groove that mates with the guide protrusion is machined on the inner wall of the focusing ring 2. When the focusing ring 2 is rotated, this mating structure can constrain the focusing ring 2 to drive the internal lens group 1 to move smoothly in a linear motion along the axis of the lens barrel 4, thereby achieving precise focusing.

[0026] To further improve the feel and sealing, a sealing ring is installed between the focusing ring 2 and the lens barrel 4, and anti-slip textures are etched on the outer circumferential surface of the focusing ring 2 to increase friction during operation. Meanwhile, a small convex mirror 9 is fixedly mounted on the front face of the focusing ring 2 facing the subject, allowing the user to directly observe their own image and compose the shot from in front of the lens, expanding the lens's usage scenarios.

[0027] The focusing ring 2 has an integrally formed bayonet 3 at its end. This bayonet 3 is used for a detachable mechanical connection and optical docking with the camera body. A connecting structure is provided on the end face of the bayonet 3, comprising three circumferentially evenly distributed slots: a first slot 5, a second slot 6, and a third slot 7. The circumferential position of the limiting groove 8 is different from any of the slots; that is, it is independently located on the arc segment between the slots. The radial depths of the first slot 5, the second slot 6, and the third slot 7 are the same and greater than the radial depth of the limiting groove 8. Furthermore, each of the first slot 5, the second slot 6, and the third slot 7 has a tenon on its side, namely a first tenon 11, a second tenon 12, and a third tenon 13, respectively. The addition of tenons beside each slot forms a slot-tenon mating group, which enables more precise radial positioning and effectively prevents circumferential micro-movements between the lens and the camera body, enhancing connection rigidity and stability, and helping to maintain optical alignment accuracy in vibration environments.

[0028] Example 1: Assembly Process

[0029] Figure 3 The assembly process of the camera lens and camera body is illustrated. When mounting the lens to the camera body, the user aligns the lens mount 3 with the camera body mount, initially aligning the limiting groove 8 on the lens with the limiting pin on the body, and then rotates the entire lens. During rotation, the first latch 11, the second latch 12, and the third latch 13 on the lens, acting as the core positioning and locking structure, respectively engage and lock into the corresponding grooves 10 on the camera body. Simultaneously, the first slot 5, the second slot 6, and the third slot 7 on the lens also form auxiliary engagements with the corresponding structures on the camera body. This mount 3 structure provides precise radial positioning for the lens and camera body and effectively prevents circumferential micro-movements, thereby ensuring the rigidity, stability, and accuracy of the connection. After connection, the user can take pictures normally and can also use the convex mirror 9 at the front end of the focus ring 2 for self-viewing.

[0030] In summary, this utility model constitutes a locking connection that is rigid, precise, and effectively prevents micro-movements, ensuring the reliability and stability of the lens's connection with the camera body under long-term use and various working conditions.

[0031] It is obvious that those skilled in the art can make various modifications and changes to the embodiments of this utility model without departing from the spirit and scope of this utility model. In this way, this utility model is also intended to cover such modifications and changes if they fall within the scope of the claims of this utility model and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered as limiting the scope.

Claims

1. A detachable camera lens, comprising a lens barrel, a lens group disposed within the lens barrel, and a focusing ring sleeved outside the lens barrel, characterized in that, The end of the focusing ring is provided with a bayonet, and the bayonet is provided with a connection structure for connecting to the camera body. The connection structure includes a slot, a limiting slot and a tenon provided on the bayonet. The tenons are provided on the side of the slot and the number of tenons corresponds to the number of slots.

2. The camera lens according to claim 1, characterized in that, The card slot includes a first card slot, a second card slot, and a third card slot, and the first card slot, the second card slot, and the third card slot are evenly distributed along the circumference of the card opening.

3. The camera lens according to claim 2, characterized in that, The latch includes a first latch, a second latch, and a third latch, which are arranged sequentially adjacent to the first latch, the second latch, and the third latch.

4. The camera lens according to claim 2, characterized in that, The circumferential position of the limiting groove is different from that of any of the card slots.

5. The camera lens according to claim 4, characterized in that, The radial depth of the first card slot, the second card slot, and the third card slot is greater than the radial depth of the limiting groove.

6. The camera lens according to claim 1, characterized in that, The bayonet and the focusing ring are integrally formed.

7. The camera lens according to claim 1, characterized in that, The outer circumferential surface of the focusing ring is provided with anti-slip texture.

8. The camera lens according to claim 1, characterized in that, A small convex mirror is fixedly mounted on the front surface of the focusing ring facing the subject.

9. The camera lens according to claim 1, characterized in that, The outer wall of the lens barrel is provided with a guide protrusion, and the inner wall of the focusing ring is provided with a guide groove that cooperates with the guide protrusion.

10. The camera lens according to claim 1, characterized in that, A sealing ring is provided between the focusing ring and the lens barrel.

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