Lens barrel structure and optical lens

Abstract

The utility model provides a kind of lens barrel structure and optical lens, lens barrel structure includes: cylinder, cylinder has at least one cutting edge cylinder wall, the object side of cutting edge cylinder wall has the U-shaped gap of through inner wall surface and outer wall surface of cutting edge cylinder wall;Pressure ring, pressure ring is arranged in the light ray incident end of cylinder, pressure ring has at least one cutting edge, cutting edge is embedded into U-shaped gap, the sidewall of U-shaped gap has at least one first rotation-stopping structure, the outer ring surface of pressure ring has the second rotation-stopping structure with first rotation-stopping structure cooperation.The utility model solves the problem that pressure ring is prone to circumferential deviation or rotation in the assembling process in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of optical imaging equipment technology, and more specifically, to a lens barrel structure and an optical lens. Background Technology

[0002] With the rapid development of electronic devices, the lens barrel structure mounted on these devices has increasingly become a focus of consumer attention, and the industry faces the challenge of achieving high image quality within limited space. However, traditional lens barrel structures mostly adopt a fully circular design, which often makes it difficult to meet the strict requirements of space constraints and thickness control while pursuing high-quality imaging, especially in today's pursuit of thinner and lighter devices.

[0003] However, traditional lens barrel structures often employ a fully circular design, making it difficult to accommodate lens groups with chamfered edges. This results in complex optical axis calibration, low assembly efficiency, and an increase in module thickness due to structural redundancy. Therefore, chamfered edges are incorporated into both the inner wall of the lens barrel and the pressure ring structure. Furthermore, the assembly of the existing lens barrel and pressure ring typically relies on screws or adhesive bonding. The pressure ring is prone to circumferential offset or rotation during assembly. For pressure rings with chamfered edges, circumferential offset or rotation during assembly can lead to optical axis deviation or structural interference, affecting the imaging quality of the lens barrel structure.

[0004] In other words, in existing technologies, the pressure ring is prone to circumferential offset or rotation during assembly. Utility Model Content

[0005] The main purpose of this invention is to provide a lens barrel structure and an optical lens to solve the problem that the pressure ring is prone to circumferential offset or rotation during the assembly process in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, a lens barrel structure is provided, comprising: a barrel body having at least one tangled barrel wall, the object side of the tangled barrel wall having a U-shaped notch penetrating the inner wall surface and the outer wall surface of the tangled barrel wall; and a pressure ring disposed at the light incident end of the barrel body, the pressure ring having at least one tangled surface embedded in the U-shaped notch, the side wall of the U-shaped notch having at least one first anti-rotation structure, and the outer annular surface of the pressure ring having a second anti-rotation structure cooperating with the first anti-rotation structure.

[0007] Furthermore, one of the first anti-rotation structure and the second anti-rotation structure is a slot, and the other is a protruding structure. The protruding structure can extend into the slot. When the second anti-rotation structure is a slot, the sidewall of the U-shaped notch serves as the first anti-rotation structure.

[0008] Furthermore, the tube body has two tangled tube walls located on opposite sides of the optical axis of the lens tube structure. The outer surfaces of the two tangled tube walls are the first surface and the second surface, respectively, and the first surface and the second surface are parallel planes.

[0009] Furthermore, the cylinder also has two connecting cylinder walls, the two ends of which are connected to two tangent cylinder walls respectively. The outer wall surfaces of the two connecting cylinder walls each have inclined sections, the two inclined sections are connected to the two sides opposite to the first surface respectively, and the distance between the two inclined sections gradually increases towards the second surface.

[0010] Furthermore, the lens barrel structure also includes at least two connecting parts, with at least one connecting part provided on each inclined section, and the side surface of the connecting part facing away from the second surface being coplanar with the first surface.

[0011] Furthermore, the light emitting end of the cylinder has an image-side end face and a first transition annular surface connected to the inner side of the image-side end face. The area enclosed by the first transition annular surface in the direction perpendicular to the optical axis gradually decreases towards the light incident end.

[0012] Furthermore, the first transition annular surface includes two planar segments and two arc-shaped segments. The two ends of the two planar segments are connected to the two arc-shaped segments respectively. The two planar segments correspond to the two tangential cylinder walls respectively. Each planar segment is provided with a first wave structure, and the first wave structures on the two planar segments are symmetrically arranged.

[0013] Furthermore, the minimum distance d1 from the planar segment to the optical axis and the minimum distance d2 from the planar segment corresponding to the tangent cylinder wall with the first surface satisfy the following condition: 3.0 ≤ d1 / d2 ≤ 7.0.

[0014] Furthermore, the pressure ring has a second transition annular surface connecting the object side of the pressure ring and the minimum inner diameter of the pressure ring. The area enclosed by the second transition annular surface in the direction perpendicular to the optical axis gradually decreases towards the image side of the pressure ring. The second transition annular surface has two pressure ring planar segments and two pressure ring arc segments. The two pressure ring planar segments correspond to the two tangent cylinder walls respectively. Each pressure ring planar segment is provided with a second wave structure, and the second wave structures on the two pressure ring planar segments are symmetrically arranged.

[0015] Furthermore, the minimum distance d3 from the pressure ring plane segment to the optical axis and the minimum distance d4 from the pressure ring plane segment corresponding to the tangent cylinder wall with the first surface satisfy the following condition: 5.0≤d3 / d4≤7.0.

[0016] Furthermore, the width L of the cylinder at its center position and the height H of the cylinder at its center position satisfy: 1.3 <L / H<1.5。

[0017] According to another aspect of the present invention, an optical lens is provided, comprising the above-described lens barrel structure and a lens group assembled inside the lens barrel structure.

[0018] The lens barrel structure using the technical solution of this utility model includes a barrel body and a pressure ring. The barrel body has at least one tangled wall, and the object side of the tangled wall has a U-shaped notch that penetrates the inner and outer wall surfaces of the tangled wall. The pressure ring is disposed at the light incident end of the barrel body. The pressure ring has at least one tangled surface that is embedded in the U-shaped notch. The side wall of the U-shaped notch has at least one first anti-rotation structure, and the outer ring surface of the pressure ring has a second anti-rotation structure that cooperates with the first anti-rotation structure.

[0019] The barrel of this application adopts a chamfered design, significantly reducing the height of the barrel at the chamfered edge, thereby reducing the overall height of the module, minimizing material usage in unnecessary parts, and meeting the miniaturization requirements of the lens barrel structure. Simultaneously, a first anti-rotation structure and a second anti-rotation structure are provided on the chamfered barrel wall and the pressure ring to form a rotation limiting mechanism, ensuring the positioning accuracy of the pressure ring. Even during complex assembly processes, this effectively prevents circumferential displacement or rotation of the pressure ring, avoiding optical axis deviation or structural interference caused by misalignment. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 An exploded view of an optical lens according to an alternative embodiment of the present invention is shown;

[0022] Figure 2 A schematic diagram of the object-side end of the lens barrel structure according to Embodiment 1 of this utility model is shown;

[0023] Figure 3 A schematic diagram of the image-side end of the lens barrel structure according to Embodiment 1 of this utility model is shown;

[0024] Figure 4 A schematic diagram of the object-side end of the lens barrel structure according to Embodiment 2 of this utility model is shown;

[0025] Figure 5 A schematic diagram of the image-side end of the lens barrel structure according to Embodiment 2 of this utility model is shown;

[0026] Figure 6 A schematic diagram of the object-side end of the lens barrel structure according to Embodiment 3 of this utility model is shown;

[0027] Figure 7A schematic diagram of the image-side end of the lens barrel structure according to Embodiment 3 of this utility model is shown;

[0028] Figure 8 A schematic diagram of the object-side end of the lens barrel structure of Embodiment 4 of this utility model is shown;

[0029] Figure 9 A schematic diagram of the image-side end of the lens tube structure of Embodiment 4 of this utility model is shown.

[0030] The above figures include the following reference numerals:

[0031] 10. Cylinder body; 11. Cylinder wall with tangled edge; 111. U-shaped notch; 12. Light incident end; 13. Connecting cylinder wall; 131. Inclined section; 14. First transition ring surface; 141. Planar section; 142. Arc section; 143. First wave structure; 144. First tooth structure; 15. Light exit end; 16. Image side end face; 20. Lens group; 30. Pressure ring; 31. Second transition ring surface; 311. Planar section of pressure ring; 312. Arc section of pressure ring; 32. Second wave structure; 321. Second tooth structure; 33. Culved edge surface; 40. First anti-rotation structure; 50. Second anti-rotation structure; 60. First surface; 70. Second surface; 80. Connecting part; 81. Concave arc surface. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0034] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0035] To address the problem of circumferential offset or rotation of the pressure ring during assembly in existing technologies, this invention provides a lens barrel structure and an optical lens.

[0036] like Figures 1 to 9As shown, the lens barrel structure includes a barrel body 10 and a pressure ring 30. The barrel body 10 has at least one tangled barrel wall 11. The object side of the tangled barrel wall 11 has a U-shaped notch 111 that penetrates the inner and outer wall surfaces of the tangled barrel wall 11. The pressure ring 30 is disposed at the light incident end 12 of the barrel body 10. The pressure ring 30 has at least one tangled surface 33, which is embedded in the U-shaped notch 111. The side wall of the U-shaped notch 111 has at least one first anti-rotation structure 40. The outer ring surface of the pressure ring 30 has a second anti-rotation structure 50 that cooperates with the first anti-rotation structure 40.

[0037] The barrel 10 of this application adopts a chamfered design, which significantly reduces the height of the barrel at the chamfered position, thereby reducing the overall height of the module, reducing material in unnecessary parts, and meeting the miniaturization requirements of the lens barrel structure. At the same time, a first anti-rotation structure 40 and a second anti-rotation structure 50 are provided on the chamfered barrel wall 11 and the pressure ring 30 to form a rotation limiting mechanism, ensuring the accuracy of the positioning of the pressure ring 30. Even in complex assembly processes, it can effectively prevent the pressure ring 30 from circumferentially shifting or rotating, avoiding optical axis deviation or structural interference caused by misalignment, which is beneficial to ensuring the optical performance of the lens barrel structure.

[0038] like Figure 2 , Figure 4 , Figure 6 and Figure 8 As shown, one of the first anti-rotation structure 40 and the second anti-rotation structure 50 is a slot, and the other is a protruding structure that can extend into the slot. When the second anti-rotation structure 50 is a slot, the sidewall of the U-shaped notch 111 serves as the first anti-rotation structure 40. During assembly, the precise engagement of the first anti-rotation structure 40 and the second anti-rotation structure 50 achieves circumferential locking between the pressure ring 30 and the barrel 10, preventing relative displacement caused by vibration or temperature changes, thereby ensuring the stability of the lens group 20 and the consistency of the optical axis. This design utilizes the complementarity of mechanical structures to maintain the high performance and high reliability of the lens barrel structure even in extreme environments.

[0039] It should be noted that the interlocking of the first anti-rotation structure 40 and the second anti-rotation structure 50 does not mean that they are snapped together. Because the assembly of the pressure ring 30 requires a certain margin, there is a certain gap between the interlocking positions of the first anti-rotation structure 40 and the second anti-rotation structure 50. In other words, after the protruding structure is embedded into the groove, it needs to be cured by applying glue or other operations to complete the assembly of the pressure ring 30 and the cylinder 10.

[0040] like Figure 2As shown, the outer annular surface of the pressure ring 30 has two L-shaped slots, located at both ends of the tangent surface 33. The L-shaped slots serve as the second anti-rotation structure 50. At this time, the second anti-rotation structure 50 is a slot, and the sidewalls on both sides of the U-shaped notch 111 fit into the L-shaped notch. When the pressure ring 30 is assembled into the cylinder 10, the tangent surface 33 is embedded into the U-shaped notch 111, and the sidewalls on both sides of the U-shaped notch 111 are embedded into the L-shaped slots. This fitting structure ensures that the pressure ring 30 will not shift or rotate circumferentially (i.e., around the optical axis) after assembly, avoiding optical axis deviation or structural interference caused by misalignment.

[0041] In some alternative embodiments, the first anti-rotation structure 40 is a slot, and the second anti-rotation structure 50 is a protruding structure. For example, the sidewalls on both sides of the U-shaped notch 111 have protruding structures, and the pressure ring 30 has a slot that mates with the protruding structure.

[0042] like Figure 1 As shown, the barrel 10 has two chamfered barrel walls 11 located on opposite sides of the lens group 20. The outer surfaces of the two chamfered barrel walls 11 are a first surface 60 and a second surface 70, respectively, and the first surface 60 and the second surface 70 are parallel planes. The design of the barrel 10 with two chamfered barrel walls 11, located on opposite sides of the lens group 20, and by setting the first surface 60 and the second surface 70 as parallel planes, helps to reduce the dimensions of the barrel 10 in both the horizontal and vertical directions, especially reducing the thickness of the barrel 10 in the direction perpendicular to the optical axis, thus facilitating miniaturization. The parallel design ensures a more compact overall structure of the barrel, reduces the risk of module thickening due to structural redundancy, and helps achieve the miniaturization goal of the lens module.

[0043] like Figure 1 As shown, the cylinder 10 also has two connecting cylinder walls 13, with each end of the connecting cylinder wall 13 connected to two truncated cylinder walls 11. The outer surfaces of both connecting cylinder walls 13 have inclined sections 131, which are connected to opposite sides of the first surface 60. The distance between the two inclined sections 131 gradually increases towards the second surface 70. The design of the inclined sections 131 effectively reduces the frictional resistance during mold separation, allowing the cylinder to separate more smoothly from the mold during demolding, reducing the risk of tearing, scratching, or deformation, and ensuring consistent product molding quality. Furthermore, the rational design of the inclined sections 131 avoids injection molding defects such as shrinkage marks, stress concentration, and bubbles caused by excessive local wall thickness, ensuring the uniformity of the cylinder wall thickness and the stability of the structure.

[0044] like Figure 1As shown, the lens barrel structure also includes at least two connecting portions 80. Each inclined section 131 is provided with at least one connecting portion 80, and the side surface of the connecting portion 80 facing away from the second surface 70 is coplanar with the first surface 60. The provision of the connecting portions 80 ensures a stable connection between the lens barrel 10 and external equipment (such as a motor). At the same time, the design that the side surface of the connecting portion 80 facing away from the second surface 70 is coplanar with the first surface 60 of the lens barrel 10 avoids additional assembly mechanisms, improves the integration between the lens barrel structure and the equipment, and reduces the overall thickness of the equipment.

[0045] exist Figure 1 In the specific embodiment shown, the end face of the connecting part 80 away from the inclined section 131 has multiple concave arc surfaces 81. A part of the focusing motor in the module is connected to the concave arc surface 81 so that the focusing motor drives the lens barrel structure to move smoothly along the optical axis, thereby achieving fast and accurate autofocus.

[0046] like Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 9 As shown, the light emitting end 15 of the cylinder has an image-side end face 16 and a first transition annular surface 14 connected to the inner side of the image-side end face 16. The area enclosed by the first transition annular surface 14 in the direction perpendicular to the optical axis gradually decreases towards the light incident end 12. This design of the first transition annular surface 14 can effectively reduce the scattering and stray light interference of the light emitted through the first transition annular surface 14.

[0047] like Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 9 As shown, the first transition torus 14 includes two planar segments 141 and two arcuate segments 142. The two ends of the two planar segments 141 are connected to the two arcuate segments 142 respectively. The two planar segments 141 correspond to the two tangential cylindrical walls 11. Each planar segment 141 is provided with a first wave structure 143, and the first wave structures 143 on the two planar segments 141 are symmetrically arranged. The introduction of the wave structure breaks the continuity of light propagation, effectively suppressing edge diffraction effects and avoiding the influence of stray light on imaging. The design of the first wave structure 143 effectively suppresses stray light that may be generated at the first transition torus 14. By setting a specific first wave structure 143 on the planar segment 141, light rays deviating from the principal optical axis path can be scattered and blocked, preventing stray light from incident on the imaging surface.

[0048] In some alternative embodiments, the center of the arc of the arc segment 142 is located inside the cylinder 10.

[0049] In addition, the combined design of the planar section 141 and the arc section 142 increases the structural complexity of the cylinder 10, thereby improving its compressive strength and overall stability.

[0050] Preferably, the crests and troughs of the first wave structure 143 are arc-shaped, which can better scatter the incident light and thus effectively suppress stray light in a specific direction.

[0051] In some alternative embodiments, a first wave structure 143 may also be provided on the arc segment 142.

[0052] It should be noted that the first wave structure 143 is not a simple sine or cosine wave shape, but a tooth shape optimized through optical simulation. The first wave structure 143 maintains a certain angle with the image-side end face of the tube. On the one hand, in the injection molding process, an appropriate draft angle can ensure smooth separation of the tube from the mold and avoid structural damage; on the other hand, this angle can effectively block non-imaging rays that deviate from the principal optical axis outside the tube, preventing them from being reflected multiple times within the lens group 20 and forming stray light. In addition, the tips of the first tooth structure 144 break the continuity of light waves and can scatter any stray light that may be generated more effectively than the edges of a plane.

[0053] like Figure 3 , Figure 5 , Figure 7 and Figure 9 As shown, the minimum distance d1 from the planar segment 141 to the optical axis and the minimum distance d2 from the planar segment 141 corresponding to the tangent cylinder wall 11 with the first surface 60 to the first surface 60 satisfy the following condition: 3.0 ≤ d1 / d2 ≤ 7.0. If d1 / d2 is greater than 7.0, it will lead to uneven light field distribution, exacerbate the diffraction of stray light at the edges, produce a vignetting effect, resulting in decreased image quality and reduced contrast. If d1 / d2 is less than 3.0, although stray light can be suppressed better, it will limit the effective light flux and affect the image brightness. By controlling the ratio of d1 / d2, stray light can be effectively suppressed while ensuring sufficient light intake, thereby improving the image sharpness and contrast. This ratio also affects the vignetting characteristics of light, that is, the degree of light attenuation at the edges. By controlling the ratio of d1 / d2, the distribution of light at the edge of the light outlet can be optimized, reducing the vignetting effect and ensuring that the lens barrel structure can maintain good light uniformity during shooting, thereby improving the overall image quality.

[0054] like Figure 2 , Figure 4 , Figure 6 and Figure 8As shown, the pressure ring 30 has a second transition annular surface 31 connecting the object side surface of the pressure ring 30 and the minimum inner diameter of the pressure ring 30. The area of ​​the cross-section of the second transition annular surface 31 perpendicular to the optical axis gradually decreases towards the image side surface of the pressure ring 30. The second transition annular surface 31 has two pressure ring planar segments 311 and two pressure ring arcuate segments 312. The two pressure ring planar segments 311 correspond to the two tangential cylinder walls 11, respectively. Each pressure ring planar segment 311 is provided with a second wave structure 32, and the second wave structures 32 on the two pressure ring planar segments 311 are symmetrically arranged. The area enclosed by the second transition annular surface 31 in the direction perpendicular to the optical axis gradually decreases towards the image side surface of the pressure ring 30, which means that the second transition annular surface 31 gradually narrows in the optical axis direction. This design can effectively capture and scatter light rays that deviate from the optical axis, preventing them from entering the lens group 20, thereby improving the contrast and sharpness of the image. The second wave structure 32 further reduces stray light generation and improves image quality by disrupting the diffraction paths of edge rays.

[0055] In some alternative embodiments, the center of the arc of the pressure ring arc section 312 is located inside the cylinder.

[0056] In some alternative embodiments, a second wave structure 32 may also be provided on the arc surface segment 312 of the pressure ring.

[0057] Furthermore, the design of the flat section 311 and the curved section 312 of the pressure ring allows the inlet of the lens barrel structure to have a chamfered shape, which helps to reduce the external dimensions of the lens barrel structure. It also helps to maintain the compatibility between the structure of the pressure ring 30 and the barrel body 10.

[0058] It should be noted that the second wave structure 32 is not a simple sine or cosine wave shape, but a tooth shape optimized through optical simulation. The second wave structure 32 maintains a certain angle with the image-side end face of the cylinder. On the one hand, in the injection molding process, an appropriate draft angle can ensure that the pressure ring 30 separates smoothly from the mold and avoid structural damage; on the other hand, this angle can effectively block non-imaging light rays that deviate from the principal optical axis outside the cylinder, preventing them from being reflected multiple times within the lens group 20 and forming stray light. In addition, the tooth tips of the second tooth structure 321 break the continuity of the light wave and can scatter any stray light that may be generated more effectively than the edge of a plane.

[0059] like Figure 2 , Figure 4 , Figure 6 and Figure 8As shown, between the minimum distance d3 from the pressing ring planar section 311 to the optical axis and the minimum distance d4 from the pressing ring planar section 311 corresponding to the trimmed cylindrical wall 11 having the first surface 60 to the first surface 60, the following condition is satisfied: 5.0≤d3 / d4≤7.0. If d3 / d4 is greater than 7.0, excessive edge stray light will enter the lens group 20 and reduce imaging contrast. If d3 / d4 is less than 5.0, the effective light input is limited, which affects the aperture size and imaging brightness. By controlling the ratio of d3 / d4, stray light can be effectively suppressed while sufficient light input is ensured, thereby improving the clarity and contrast of imaging.

[0060] As Figure 3 , Figure 5 , Figure 7 and Figure 9 As shown, between the width L of the cylindrical body 10 at the central position and the height H of the cylindrical body 10 at the central position, the following condition is satisfied: 1.3<L / H<1.5. Constraining L / H within a reasonable range can provide more stable and efficient optical axis positioning, reduce the offset and scattering of light during transmission, thereby significantly improving imaging clarity and contrast. In addition, a reasonable aspect ratio helps reduce the generation of edge stray light. By precisely controlling the geometric shape of the cylindrical body, non-imaging light can be effectively blocked, the glare effect is reduced, and image quality is improved.

[0061] The present application also provides four specific embodiments, please refer to Figures 2 to 9 , since the structures in the first to fourth embodiments are similar to those described above, they will not be repeated herein. The main difference lies in the different parameters of the cylindrical body and the pressing ring in each embodiment. For the parameters of the first to fourth embodiments, please refer to Table 1.

[0062] Table 1

[0063] Example 1 2.30 0.68 2.40 0.39 9.10 6.30 3.38 6.15 1.44 Example 2 3.17 0.46 3.18 0.47 11.1 7.62 6.89 6.76 1.46 Example 3 2.58 0.79 3.11 0.61 10.20 7.44 3.27 5.09 1.37 Example 4 2.40 0.45 2.69 0.39 8.90 6.40 5.32 6.90 1.39

[0064] In the first embodiment, as Figure 2 and Figure 3 shown, the minimum distance d1 from the planar section 141 to the optical axis is 2.3 mm, the minimum distance d2 from the planar section 141 corresponding to the trimmed cylindrical wall 11 having the first surface 60 to the first surface 60 is 0.68 mm, the minimum distance d3 from the pressing ring planar section 311 to the optical axis is 2.4 mm, the minimum distance d4 from the pressing ring planar section 311 corresponding to the trimmed cylindrical wall 11 having the first surface 60 to the first surface 60 is 0.39 mm, the width L of the cylindrical body 10 at the central position is 9.1 mm, and the height H of the cylindrical body 10 at the central position is 6.3 mm.

[0065] In the second embodiment, as Figure 4 and Figure 5As shown, the minimum distance d1 from the planar segment 141 to the optical axis is 3.17 mm; the minimum distance d2 from the planar segment 141 corresponding to the tangled cylindrical wall 11 with the first surface 60 to the first surface 60 is 0.46 mm; the minimum distance d3 from the pressure ring planar segment 311 to the optical axis is 3.18 mm; the minimum distance d4 from the pressure ring planar segment 311 corresponding to the tangled cylindrical wall 11 with the first surface 60 to the first surface 60 is 0.47 mm; the width L of the cylinder 10 at its center position is 11.1 mm; and the height H of the cylinder 10 at its center position is 7.62 mm. In this embodiment, a second wave structure 32 is provided on the arc surface segment 312 of the pressure ring.

[0066] In Example 3, as Figure 6 and Figure 7 As shown, the minimum distance d1 from the planar segment 141 to the optical axis is 2.58 mm, the minimum distance d2 from the planar segment 141 corresponding to the tangent cylinder wall 11 with the first surface 60 to the first surface 60 is 0.79 mm, the minimum distance d3 from the pressure ring planar segment 311 to the optical axis is 3.11 mm, the minimum distance d4 from the pressure ring planar segment 311 corresponding to the tangent cylinder wall 11 with the first surface 60 to the first surface 60 is 0.61 mm, the width L of the cylinder 10 at the center position is mm, and the height H of the cylinder 10 at the center position is mm.

[0067] In Example 4, as Figure 8 and Figure 9 As shown, the minimum distance d1 from the planar segment 141 to the optical axis is 2.4 mm; the minimum distance d2 from the planar segment 141 corresponding to the tangent cylinder wall 11 with the first surface 60 to the first surface 60 is 0.45 mm; the minimum distance d3 from the pressure ring planar segment 311 to the optical axis is 2.69 mm; the minimum distance d4 from the pressure ring planar segment 311 corresponding to the tangent cylinder wall 11 with the first surface 60 to the first surface 60 is 0.39 mm; the width L of the cylinder 10 at the center position is 8.9 mm; and the height H of the cylinder 10 at the center position is 6.4 mm.

[0068] According to another aspect of this utility model, an optical lens is provided, comprising the aforementioned lens barrel structure and lens group 20. The lens group 20 is located within the barrel 10 of the lens barrel structure, and the lens group 20 has at least one chamfered portion, which abuts against the inner wall surface of the chamfered barrel wall 11. The optical lens with the aforementioned lens barrel structure has the advantages of small size, structural stability, and stable imaging.

[0069] In some alternative embodiments, the number of chamfered barrel walls 11, chamfered portions, and chamfered surfaces 33 are the same and correspond to each other. By establishing a one-to-one correspondence between the chamfered barrel walls 11 of the barrel 10, the chamfered surfaces 33 of the pressure ring 30, and the chamfered portions of the lens group 20, and based on precise control of the optical elements, by reducing unnecessary materials and space, the lens can achieve a longer focal length within a limited volume, while ensuring accurate alignment of the optical axis and avoiding image blurring caused by structural instability. At the same time, it significantly reduces the overall size of the lens, improving portability, especially in devices such as smartphones, enabling high-magnification optical zoom without increasing device thickness. The design of the chamfered barrel walls 11 breaks through the limitations of traditional circular barrels, allowing the barrel 10 to significantly reduce material in unnecessary parts while maintaining sufficient strength, which is beneficial for reducing the external dimensions of the barrel 10 and meeting the miniaturization requirements of the lens barrel structure. This improvement is particularly suitable for the lens group 20 with the chamfered edge, enabling the lens group 20 to be precisely positioned and firmly supported within the barrel 10. This helps to maximize the use of the internal space of the barrel 10 and achieves a perfect combination of optimized optical performance and structural compactness. Simultaneously, the first anti-rotation structure 40 and the second anti-rotation structure 50, which cooperate with each other on the chamfered barrel wall 11 and the pressure ring 30, ensure the positioning accuracy of the pressure ring 30. Even during complex assembly processes, this effectively prevents the pressure ring 30 from circumferentially shifting or rotating, avoiding optical axis deviation or structural interference caused by misalignment, and thus ensuring the optical performance of the lens barrel structure.

[0070] It should be noted that the number of lenses in the lens group 20 is not limited, and the chamfered portion of the lens group 20 refers to the structure formed by cutting the lens group 20 as a component. That is, multiple chamfers on the same side of multiple optical elements within the lens group 20 together constitute the aforementioned chamfered portion. The number of chamfers in each chamfered portion is the same as the number of optical elements within the lens group 20, and the optical elements include lenses and spacers.

[0071] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0072] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0073] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0074] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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, characterized in that, include: The cylindrical body (10) has at least one tangent cylindrical wall (11), and the object side of the tangent cylindrical wall (11) has a U-shaped notch (111) that penetrates the inner wall surface and the outer wall surface of the tangent cylindrical wall (11). A pressure ring (30) is disposed at the light incident end (12) of the cylinder (10). The pressure ring (30) has at least one tangent surface (33), which is embedded in the U-shaped notch (111). The sidewall of the U-shaped notch (111) has at least one first anti-rotation structure (40), and the outer ring surface of the pressure ring (30) has a second anti-rotation structure (50) that cooperates with the first anti-rotation structure (40).

2. The lens barrel structure according to claim 1, characterized in that, One of the first anti-rotation structure (40) and the second anti-rotation structure (50) is a slot, and the other is a protruding structure. The protruding structure can extend into the slot. When the second anti-rotation structure (50) is the slot, the sidewall of the U-shaped notch (111) serves as the first anti-rotation structure (40).

3. The lens barrel structure according to claim 2, characterized in that, The cylinder (10) has two tangled cylinder walls (11), which are located on opposite sides of the optical axis of the lens tube structure. The outer surfaces of the two tangled cylinder walls (11) are a first surface (60) and a second surface (70), respectively. The first surface (60) and the second surface (70) are mutually parallel planes.

4. The lens barrel structure according to claim 3, characterized in that, The cylinder (10) also has two connecting cylinder walls (13), the two ends of the two connecting cylinder walls (13) are respectively connected to the two tangent cylinder walls (11), the outer wall surfaces of the two connecting cylinder walls (13) each have a beveled section (131), the two beveled sections (131) are respectively connected to the two sides opposite to the first surface (60), and the distance between the two beveled sections (131) gradually increases towards the second surface (70).

5. The lens barrel structure according to claim 4, characterized in that, The lens barrel structure also includes at least two connecting parts (80), and each of the inclined sections (131) is provided with at least one connecting part (80). The side surface of the connecting part (80) facing away from the second surface (70) is coplanar with the first surface (60).

6. The lens barrel structure according to claim 3, characterized in that, The light emitting end (15) of the cylinder (10) has an image-side end face (16) and a first transition annular surface (14) connected to the inner side of the image-side end face (16). The area enclosed by the first transition annular surface (14) in a direction perpendicular to the optical axis gradually decreases towards the light incident end (12).

7. The lens barrel structure according to claim 6, characterized in that, The first transition annular surface (14) includes two planar segments (141) and two arc segments (142). The two ends of the two planar segments (141) are respectively connected to the two arc segments (142). The two planar segments (141) correspond to the two tangential cylindrical walls (11). Each planar segment (141) is provided with a first wave structure (143), and the first wave structures (143) on the two planar segments (141) are symmetrically arranged.

8. The lens barrel structure according to claim 7, characterized in that, The minimum distance d1 from the planar segment (141) to the optical axis and the minimum distance d2 from the planar segment (141) to the first surface (60) corresponding to the tangent cylinder wall (11) with the first surface (60) satisfy the following condition: 3.0 ≤ d1 / d2 ≤ 7.

0.

9. The lens barrel structure according to claim 3, characterized in that, The pressure ring (30) has a second transition annular surface (31) connecting the object side surface of the pressure ring (30) and the minimum inner diameter of the pressure ring (30). The area enclosed by the second transition annular surface (31) in the direction perpendicular to the optical axis gradually decreases towards the image side surface of the pressure ring (30). The second transition annular surface (31) has two pressure ring planar segments (311) and two pressure ring arc surface segments (312). The two pressure ring planar segments (311) correspond to the two tangential cylinder walls (11) respectively. Each pressure ring planar segment (311) is provided with a second wave structure (32), and the second wave structures (32) on the two pressure ring planar segments (311) are symmetrically arranged.

10. The lens barrel structure according to claim 9, characterized in that, The minimum distance d3 from the pressure ring plane segment (311) to the optical axis and the minimum distance d4 from the pressure ring plane segment (311) to the first surface (60) corresponding to the tangent cylinder wall (11) with the first surface (60) satisfy the following condition: 5.0≤d3 / d4≤7.

0.

11. The lens barrel structure according to any one of claims 1 to 10, characterized in that, The width L of the cylinder (10) at its center position and the height H of the cylinder (10) at its center position satisfy the following relationship: 1.3 <L / H<1.5。 12. An optical lens, characterized in that, It includes the lens barrel structure according to any one of claims 1 to 11 and the lens group assembled inside the lens barrel structure.

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