A lens barrel structure for an infrared continuous zoom lens
By introducing protective sleeves, locking blocks, and heating rings into the lens barrel structure, the problems of easy damage to the lens barrel and the impact of water mist on imaging have been solved, achieving all-round protection and uniform heating of the lens barrel, thus improving the practicality of the equipment and the imaging effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI TIANXIN MICROVISION OPTICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-05-26
AI Technical Summary
The existing lens barrel structure lacks all-round protection and is easily damaged. Furthermore, water vapor can easily form on the lens surface when the temperature changes, affecting the imaging effect. Existing heating methods may cause lens deformation or damage.
A lens barrel structure including a protective sleeve, a locking block, an insertion block, and a heating ring is designed. The protective sleeve is fitted onto the outer surface of the lens barrel, the locking block engages with the connecting groove, the insertion block is connected to the operating groove, the spring provides stability, and uniform heating is achieved through the heating ring and the filling layer to prevent damage and perform defogging and defrosting.
It effectively protects the lens barrel structure, prevents damage, ensures image quality, avoids localized overheating and current breakdown of the lens, and improves the practicality and imaging stability of the equipment.
Smart Images
Figure CN224287223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lens barrel structure technology; more specifically, it relates to a lens barrel structure for an infrared continuous zoom lens. Background Technology
[0002] The telescope tube structure is usually made of a cylindrical shell of rigid and lightweight materials such as carbon fiber or aluminum alloy. Its main function is to accurately fix and protect internal optical components such as objective lenses and eyepieces, isolate external stray light and airflow interference, ensure optical path stability, and integrate focusing mechanism, lens hood and internal light-blocking ring.
[0003] Infrared continuous zoom lenses are the core component of imaging systems. Their core lies in using special infrared optical materials to create multiple lens groups. Through a precision servo mechanism, the internal lenses are continuously translated along the optical axis to achieve stepless and smooth focal length changes. Thus, when the target distance or scene size changes, the system can simultaneously complete the non-thermal compensation for zoom and temperature adaptability over a wide temperature range without changing the lens. Ultimately, while maintaining high imaging quality, it provides uninterrupted continuous field of view adjustment capabilities in applications such as security monitoring, night driving, and industrial inspection.
[0004] Currently, existing lens barrel structures have several drawbacks during use. The protective casing typically only protects the lens portion, leaving the entire lens barrel unprotected. This can lead to damage to the lens barrel, reducing the device's practicality. Furthermore, when used outdoors, significant temperature fluctuations can cause condensation on the lens surface, affecting image quality. Some current devices attempt to address this by directly heating the lens elements, which can result in localized overheating, deformation, or damage, further compromising usability. Therefore, a new lens barrel structure for infrared continuous zoom lenses is urgently needed to solve these problems. Utility Model Content
[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a lens barrel structure for an infrared continuous zoom lens to solve the problems existing in the background art.
[0006] This utility model provides the following technical solution: a lens barrel structure for an infrared continuous zoom lens, comprising:
[0007] Mounting base, the outer surface of one side of the mounting base is provided with a protective structure, and the outer surface of one side of the mounting base is fixedly connected to the lens barrel body, the outer surface of one side of the lens barrel body is installed with a zoom ring, and the outer surface of one side of the zoom ring is provided with a lens structure;
[0008] The protective structure includes a connecting groove, a moving groove, a protective sleeve, a locking block, an operating groove, an inserting block, a storage groove, and a spring, with the connecting groove being located inside the outer surface of one end of the mounting base.
[0009] The lens structure includes a lens sleeve, a filling groove, a heating ring, a filling layer, and a lens groove, with the lens sleeve mounted on the outer surface of one side of the zoom ring.
[0010] Preferably, the movable groove is formed inside the upper end of one side of the mounting base and the outer surface of the movable groove is connected to the interior of the connecting groove. The protective sleeve is fitted onto the outer surface of the lens barrel body, and the locking block is fixedly connected to the outer surface of the upper end of the protective sleeve near the mounting base. The operating groove is formed inside the outer surface of one end of the protective sleeve near the mounting base, and an insertion block is inserted into the operating groove. A storage groove is formed inside the inner wall surface of the operating groove on the inner side, and the spring is inserted into the storage groove. This design can protect the lens barrel body through the protective sleeve.
[0011] Preferably, the moving groove is an L-shaped groove, the locking block is an L-shaped block, the position of the L-shaped block corresponds to the position of the L-shaped groove, and the internal dimensions of the L-shaped groove are adapted to the external dimensions of the L-shaped block. The internal dimensions of the connecting groove are adapted to the external dimensions of the locking block. This design allows the locking block to move inside the moving groove, and the locking block can move more stably.
[0012] Preferably, the position of the insertion block corresponds to the position of the connecting groove, and the external dimensions of the insertion block are adapted to the internal dimensions of the connecting groove. This design allows the insertion block to be inserted into the interior of the connecting groove, and the insertion block is more stable inside the connecting groove.
[0013] Preferably, the external dimensions of the insertion block are adapted to the internal dimensions of the operating slot, and the outer surfaces of the upper and lower ends of the inner side of the insertion block are provided with limiting blocks. The inner surfaces of the upper and lower ends of the inner side of the operating slot are provided with limiting grooves, and the limiting grooves do not penetrate the inner surface of the outer side of the operating slot. The internal dimensions of the limiting grooves are adapted to the external dimensions of the limiting blocks. The two ends of the spring abut against the inner surface of the receiving slot and the outer surface of the insertion block, respectively. This design allows the insertion block to move inside the operating slot without detaching from the inside of the operating slot.
[0014] Preferably, the filling groove is located inside the lens sleeve, and a heating ring is installed inside the filling groove. The filling groove is filled with a filling layer. The lens slot is located inside the lens sleeve at the middle position. This design allows the lens installed inside the lens slot to be heated by activating the heating ring.
[0015] Preferably, the heating ring is provided in multiple sets, and the multiple sets of heating rings are evenly distributed inside the filling groove. The filling layer is made of alumina filled with silicone. This design, through the even distribution of multiple sets of heating rings, enables the heating rings to heat more evenly and avoids local overheating.
[0016] The technical effects and advantages of this utility model are as follows: This utility model involves placing a protective sleeve on the outer surface of the lens barrel body, aligning the position of the locking block with the position of the connecting groove, inserting the locking block into the connecting groove, and rotating the protective sleeve to rotate the locking block into the moving groove. When the locking block is rotated to the deepest point inside the moving groove, the position of the insertion block aligns with the position of the connecting groove. The spring's elasticity supports the insertion block, allowing it to move outward from the operating groove and be inserted into the connecting groove. Thus, the locking block can no longer rotate inside the moving groove due to the support of the insertion block, thereby positioning the protective sleeve relative to the mounting base. This allows the protective sleeve to simultaneously protect the lens barrel body, zoom ring, and lens structure, preventing damage to the equipment and improving its practicality to a certain extent.
[0017] By activating the heating ring, heat is generated. Simultaneously, the high thermal conductivity and low electrical conductivity of the filling layer material allow for even heat transfer to the interior of the lens slot, heating the lens installed inside. This achieves defogging and defrosting effects while ensuring lens safety, preventing damage from electric current during heating. This enhances the practicality of the equipment. Furthermore, its overall structure is simple and rationally designed, highly practical, and easy to promote and apply. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0019] Figure 2 This is a three-dimensional explosion diagram of the protective structure of this utility model.
[0020] Figure 3 This utility model Figure 2 Enlarged diagram of point A.
[0021] Figure 4 This is a three-dimensional exploded view of the lens structure of this utility model.
[0022] The attached figures are labeled as follows: 1. Mounting base; 2. Protective structure; 21. Connecting groove; 22. Moving groove; 23. Protective sleeve; 24. Locking block; 25. Operating groove; 26. Insertion block; 27. Storage groove; 28. Spring; 3. Lens barrel body; 4. Zoom ring; 5. Lens structure; 51. Lens sleeve; 52. Filling groove; 53. Heating ring; 54. Filling layer; 55. Lens groove. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The lens tube structure involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] Example 1, as Figures 1 to 3 As shown, this embodiment proposes a lens barrel structure for an infrared continuous zoom lens, including:
[0025] Mounting base 1, a protective structure 2 is provided on one side of the outer surface of mounting base 1, and a lens barrel body 3 is fixedly connected to one side of the outer surface of mounting base 1. A zoom ring 4 is installed on one side of the outer surface of lens barrel body 3, and a lens structure 5 is provided on one side of the outer surface of zoom ring 4.
[0026] The protective structure 2 includes a connecting groove 21, a moving groove 22, a protective sleeve 23, a locking block 24, an operating groove 25, an insertion block 26, a storage groove 27, and a spring 28. The connecting groove 21 is formed inside the outer surface of one end of the mounting base 1. The moving groove 22 is formed inside the upper end to the outer surface of one end of the mounting base 1, and the interior of the moving groove 22 is connected to the interior of the connecting groove 21. The protective sleeve 23 is fitted onto the outer surface of the lens barrel body 3, and the locking block 24 is fixedly connected to the outer surface of the upper end of the protective sleeve 23 near the mounting base 1. The moving groove 22 is an L-shaped groove. The locking block 24 is designed as an L-shaped block, with the position of the L-shaped block corresponding to the position of the L-shaped groove. The internal dimensions of the L-shaped groove are adapted to the external dimensions of the L-shaped block. The internal dimensions of the connecting groove 21 are adapted to the external dimensions of the locking block 24. This design allows the locking block 24 to be inserted into the connecting groove 21, and the locking block 24 is more stable inside the connecting groove 21. At the same time, by rotating the protective sleeve 23, the locking block 24 can be rotated from inside the connecting groove 21 and enter the moving groove 22, and the locking block 24 is more stable when moving inside the moving groove 22.
[0027] The operating groove 25 is opened inside the outer surface of the protective sleeve 23 on the side near the mounting base 1, and an insertion block 26 is inserted inside the operating groove 25. The position of the insertion block 26 corresponds to the position of the connecting groove 21, and the external dimensions of the insertion block 26 are adapted to the internal dimensions of the connecting groove 21. This design allows the insertion block 26 to be inserted into the connecting groove 21, and the insertion block 26 is more stable inside the connecting groove 21.
[0028] Furthermore, a storage groove 27 is provided inside the inner wall surface of the inner side of the operating groove 25. A spring 28 is inserted into the storage groove 27. The external dimensions of the insertion block 26 are adapted to the internal dimensions of the operating groove 25. Limiting blocks are provided on the outer surfaces of the upper and lower ends of the inner side of the insertion block 26. Limiting grooves are provided inside the inner walls of the upper and lower ends of the inner side of the operating groove 25. The limiting grooves do not penetrate the inner wall surface of the outer side of the operating groove 25. The internal dimensions of the limiting grooves are adapted to the external dimensions of the limiting blocks. The two ends of the spring 28 abut against the inner wall surface of the storage groove 27 and the outer surface of the insertion block 26, respectively. This design can support the insertion block 26 through the elasticity of the spring 28 itself, so that the insertion block 26 can move automatically outward inside the operating groove 25. At the same time, it drives the limiting blocks to move inside the limiting grooves. This makes the insertion block 26 more stable when moving inside the operating groove 25, and the insertion block 26 will not detach from the inside of the operating groove 25.
[0029] Example 2, as Figure 4 As shown, based on the same concept as the above embodiments, this embodiment also proposes:
[0030] The lens structure 5 includes a lens sleeve 51, a filling groove 52, a heating ring 53, a filling layer 54, and a lens groove 55. The lens sleeve 51 is installed on the outer surface of one side of the zoom ring 4. The filling groove 52 is opened inside the lens sleeve 51, and the heating ring 53 is installed inside the filling groove 52. The filling layer 54 is filled inside the filling groove 52. The lens groove 55 is opened inside the middle position of the lens sleeve 51. There are multiple sets of heating rings 53, and the multiple sets of heating rings 53 are evenly distributed inside the filling groove 52. The filling layer 54 is made of alumina filled with silicone.
[0031] In this embodiment, the design of multiple heating rings 53 evenly distributed inside the filling groove 52 enables the heating rings 53 to heat more evenly when starting up, which can reduce the situation of local overheating when heating the lens. At the same time, the high thermal conductivity and low electrical conductivity of the filling layer 54 material itself can quickly transfer the heat of the heating rings 53 to the inside of the lens groove 55, while avoiding the risk of the lens being damaged by current breakdown.
[0032] The heating ring 53 in this application is not a common heating coil device, and it is a product that can be purchased directly on the market. Its principle, connection method and control method are all existing technologies known to those skilled in the art, so they will not be described in detail here.
[0033] The insertion block 26 and all movable parts in this application require regular cleaning and maintenance, including but not limited to dust removal and lubrication.
[0034] Working principle: When using the equipment, first push the insertion block 26 to disengage it from the inside of the connecting groove 21. Then rotate the protective sleeve 23 to move the locking block 24 towards the connecting groove 21. After the locking block 24 is moved from the inside of the moving groove 22 to the inside of the connecting groove 21, the protective sleeve 23 can be pulled outward to disengage it from the outer surface of the lens barrel body 3. At this point, the equipment can be used. When the temperature changes significantly due to outdoor weather or other reasons and the lens fogs up, the heating ring 53 can be activated to generate heat. The heat is then transferred through the filling layer 54 to heat the lens installed inside the lens groove 55, thus defogging and defrosting the lens and ensuring the imaging effect of the equipment. The above is the complete working principle of this utility model.
[0035] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0036] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0037] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A lens barrel structure for an infrared continuous zoom lens, characterized in that, include: Mounting base (1), a protective structure (2) is provided on the outer surface of one side of the mounting base (1), and a lens barrel body (3) is fixedly connected to the outer surface of one side of the mounting base (1). A zoom ring (4) is installed on the outer surface of one side of the lens barrel body (3), and a lens structure (5) is provided on the outer surface of one side of the zoom ring (4). The protective structure (2) includes a connecting groove (21), a moving groove (22), a protective sleeve (23), a locking block (24), an operating groove (25), an inserting block (26), a storage groove (27), and a spring (28), and the connecting groove (21) is opened inside the outer surface of one end of the mounting base (1); The lens structure (5) includes a lens sleeve (51), a filling groove (52), a heating ring (53), a filling layer (54), and a lens groove (55), and the lens sleeve (51) is installed on the outer surface of one side of the zoom ring (4).
2. The lens barrel structure of an infrared continuous zoom lens according to claim 1, characterized in that: The movable groove (22) is opened inside the upper end of one side of the mounting base (1) and the interior of the movable groove (22) is connected to the interior of the connecting groove (21). The protective sleeve (23) is sleeved on the outer surface of the lens barrel body (3) and the locking block (24) is fixedly connected to the outer surface of the upper end of the protective sleeve (23) near the mounting base (1). The operating groove (25) is opened inside the outer surface of one end of the protective sleeve (23) near the mounting base (1) and the operating groove (25) is inserted with an insertion block (26). The operating groove (25) is opened with a storage groove (27) on the inner wall surface of the inner side. The spring (28) is inserted into the storage groove (27).
3. The lens barrel structure of an infrared continuous zoom lens according to claim 1, characterized in that: The moving groove (22) is set as an L-shaped groove, the locking block (24) is set as an L-shaped block, the position of the L-shaped block corresponds to the position of the L-shaped groove, and the internal size of the L-shaped groove is adapted to the external size of the L-shaped block. The internal size of the connecting groove (21) is adapted to the external size of the locking block (24).
4. The lens barrel structure of an infrared continuous zoom lens according to claim 1, characterized in that: The position of the insertion block (26) corresponds to the position of the connecting groove (21), and the external dimensions of the insertion block (26) are adapted to the internal dimensions of the connecting groove (21).
5. The lens barrel structure of an infrared continuous zoom lens according to claim 1, characterized in that: The external dimensions of the insertion block (26) are adapted to the internal dimensions of the operating groove (25), and the upper and lower outer surfaces of the insertion block (26) on the inner side are provided with limiting blocks. The inner surfaces of the upper and lower inner walls of the operating groove (25) on the inner side are provided with limiting grooves. The limiting grooves do not penetrate the inner wall surface of the operating groove (25) on the outer side. The internal dimensions of the limiting grooves are adapted to the external dimensions of the limiting blocks. The two ends of the spring (28) abut against the inner wall surface of the storage groove (27) and the outer surface of the insertion block (26), respectively.
6. The lens barrel structure of an infrared continuous zoom lens according to claim 1, characterized in that: The filling groove (52) is opened inside the lens sleeve (51), and a heating ring (53) is installed inside the filling groove (52), and the filling groove (52) is filled with a filling layer (54). The lens groove (55) is opened inside the lens sleeve (51) at the middle position.
7. The lens barrel structure of an infrared continuous zoom lens according to claim 1, characterized in that: The heating ring (53) is provided in multiple sets, and the multiple sets of heating rings (53) are evenly distributed inside the filling groove (52). The filling layer (54) is made of alumina-filled silicone material.