A multi-stage adjustable zoom lens structure

Abstract

This invention discloses a multi-level adjustable zoom lens structure. Key technical features include a lens bracket with a second lens inside and a first lens at the top. An outer fixing ring is fixedly connected to the outer periphery of the lens bracket. Through the adjustment mechanism, pressing the locking rod compresses the return spring, causing the locking rod to retract into the mounting groove. This allows for precise adjustment of the first lens's rotation angle by switching between different locking holes and the locking rod, thus enabling multi-level zoom adjustment. After adjustment, the return spring resets and locks, providing mechanical limiting instead of traditional friction-based limiting. This effectively avoids lens shift, focal length fluctuations, and unstable light spots caused by equipment vibration, significantly improving zoom accuracy and operational stability. Furthermore, the anti-torsion post prevents the return spring from jamming or misaligning, extending the lifespan of the adjustment structure.

Description

Technical Field

[0001] This invention relates to the field of optical lens technology, and more specifically to a multi-level adjustable zoom lens structure. Background Technology

[0002] Zoom lenses are core optical components widely used in LED fill lights, automotive lighting, industrial lighting, and warning lights. They are mainly used for optical control of the light beam emitted from the light source and can flexibly adapt to diverse lighting scenarios such as close-range floodlighting and long-range focused lighting. They are an indispensable key component in modern functional lighting equipment. These lenses usually adopt a dual-lens combination structure, and are used in conjunction with a dedicated lens bracket, light source bracket, and COB light source. The overall structure is compact and suitable for various small lighting equipment.

[0003] However, existing multi-level adjustable zoom lens structures have the following drawbacks: (1) Most existing zoom lenses adopt a double-lens combination. When using them, the operator rotates the outer lens to change the relative position of the two lenses to complete the zoom. However, after zooming, the limit is fixed only by the friction between the lenses. No special limit structure is set. During the use of the equipment, vibration and shaking are easy to occur. The lens is very easy to slide and shift on its own, resulting in unstable focal length and light spot that fluctuates in size, thus affecting the lighting effect. (2) Some lens assemblies on the market adopt an integrated fixed assembly structure. Lenses are consumable materials. After long-term use, they will turn yellow, have reduced light transmittance, and have surface wear. The integrated structure is difficult to disassemble and assemble, and lens replacement and maintenance are extremely inconvenient, which increases the cost of later use and maintenance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-level adjustable zoom lens structure, which has the advantages of precise multi-level positioning, convenient disassembly and assembly, easy replacement of lens consumables, effective avoidance of focal length shift, improved illumination stability, and reduced maintenance costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-position adjustable zoom lens structure, including a lens bracket, a second lens disposed inside the lens bracket, a first lens disposed on the top of the lens bracket, an outer fixing ring fixedly connected to the outer periphery of the lens bracket, an adjustment component for limiting the rotation of the first lens disposed on the top of the lens bracket, and a disassembly and assembly component for facilitating the disassembly of the lens bracket and the first lens.

[0006] The present invention is further configured such that: the adjusting component includes mounting grooves formed at both ends inside the outer fixing ring, a snap-fit ​​rod is slidably connected inside the mounting groove, anti-torsion posts are fixedly connected to both the snap-fit ​​rod and the inner wall of the mounting groove, a return spring is provided on the opposite side of each of the two snap-fit ​​rods, an adjusting ring is rotatably connected to the outer circumference of the outer fixing ring, and a plurality of snap holes are formed inside the adjusting ring to cooperate with the snap-fit ​​rod, the plurality of snap holes being arranged at equal intervals.

[0007] The present invention is further configured such that: the disassembly and assembly assembly includes a lens fixing ring fixedly connected to the outer periphery of the first lens, the lens fixing ring having a plurality of snap-fit ​​grooves inside, and the top of the lens bracket having an elastic snap-fit ​​member that cooperates with the snap-fit ​​grooves, the elastic snap-fit ​​member engaging with the corresponding snap-fit ​​groove.

[0008] The present invention is further configured such that: a plurality of fixing plates are fixedly connected to the top of the adjusting ring, and each fixing plate is threaded with a locking bolt, and the fixing plate is connected to the lens fixing ring by the locking bolt.

[0009] The present invention is further configured such that: both ends of the bottom of the lens bracket are fixedly connected with buckles, and reinforcing ribs are fixedly connected at equal intervals at the top edge of the lens bracket.

[0010] The present invention is further configured such that: the bottom of the lens holder has a through-hole for use with the second lens, and the outer wall of the second lens abuts against the inner wall of the through-hole.

[0011] The present invention is further configured such that: the return spring abuts against the inner wall of the locking rod and the mounting groove; the return spring is sleeved on the outer periphery of the anti-torsion post; and the locking rod is engaged with the corresponding locking hole.

[0012] In summary, the present invention has the following beneficial effects: This invention, through the adjustment of the component settings, allows pressing the locking rod to compress the return spring, causing the locking rod to retract into the mounting groove. By switching the alignment of different locking holes and the locking rod, the rotation angle of the first lens can be precisely adjusted, thereby enabling multi-level zoom adjustment. After adjustment, the return spring can be reset and locked, achieving mechanical limiting, replacing the traditional pure friction limiting method. This effectively avoids problems such as lens shift, focal length wobble, and unstable light spot caused by equipment vibration, significantly improving zoom accuracy and working stability. At the same time, the anti-torsion column setting can prevent the return spring from jamming and misalignment, extending the service life of the adjustment structure.

[0013] This invention, through the design of the disassembly and assembly components, allows for the tightening of the locking bolts inside the fixing plate, securing the fixing plate to the lens fixing ring. When the lens exhibits aging and wear issues such as yellowing, wear, and reduced light transmittance after long-term use, simply loosening the locking bolts and moving the elastic snap-fit ​​component to release its engagement with the snap-fit ​​groove allows for quick lens removal and replacement without disassembling the entire device. The disassembly and assembly operation is simple and efficient, effectively reducing the difficulty of later equipment maintenance and operating costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a bottom view of this embodiment; Figure 3 This is a breakdown diagram of this embodiment; Figure 4 This is a schematic diagram of the adjustment component in this embodiment; Figure 5 This is a schematic diagram of the disassembly and assembly components in this embodiment.

[0015] Reference numerals in the attached drawings: 1. Lens bracket; 2. First lens; 3. Second lens; 4. Buckle; 5. Reinforcing rib; 6. Outer fixing ring; 7. Assembly / disassembly assembly; 701. Elastic snap-fit ​​component; 702. Lens fixing ring; 703. Snap-fit ​​groove; 8. Adjustment assembly; 801. Snap-fit ​​rod; 802. Mounting groove; 803. Anti-torsion post; 804. Return spring; 805. Snap hole; 806. Adjustment ring; 9. Fixing plate; 10. Locking bolt. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] This embodiment discloses a multi-level adjustable zoom lens structure, such as... Figures 1 to 5 As shown, the lens bracket includes a lens holder 1, a second lens 3 is provided inside the lens holder 1, a first lens 2 is provided on the top of the lens holder 1, an outer fixing ring 6 is fixedly connected to the outer periphery of the lens holder 1, an adjustment component 8 for limiting the rotation of the first lens 2 is provided on the top of the lens holder 1, and a disassembly and assembly component 7 for facilitating the disassembly and assembly of the lens holder 1 and the first lens 2 is provided on the top of the lens holder 1.

[0018] The adjusting assembly 8 includes mounting grooves 802 formed at both ends inside the outer fixing ring 6. A locking rod 801 is slidably connected inside the mounting groove 802. Anti-torsion posts 803 are fixedly connected to the inner walls of both the locking rod 801 and the mounting groove 802. A return spring 804 is provided on each opposite side of the two locking rods 801. An adjusting ring 806 is rotatably connected to the outer circumference of the outer fixing ring 6. The adjusting ring 806 has several locking holes 805 inside, which cooperate with the locking rods 801. These locking holes 805 are equidistantly arranged, allowing the locking rods 801 to be pressed, thus compressing the return springs 804 and causing the locking rods to engage. The connecting rod 801 retracts into the mounting slot 802, allowing for precise adjustment of the rotation angle of the first lens 2 by switching the alignment of different locking holes 805 with the connecting rod 801. This enables multi-level zoom adjustment. After adjustment, the return spring 804 can be reset and locked, achieving mechanical limiting instead of the traditional pure friction limiting method. This effectively avoids problems such as lens shift, focal length wobbling, and unstable light spot caused by equipment vibration, significantly improving zoom accuracy and working stability. At the same time, the anti-torsion column 803 prevents the return spring 804 from jamming or misaligning, extending the service life of the adjustment structure.

[0019] The disassembly and assembly component 7 includes a lens retaining ring 702 fixedly connected to the outer periphery of the first lens 2. The lens retaining ring 702 has several snap-fit ​​grooves 703 inside. The top of the lens bracket 1 is fixedly connected to an elastic snap-fit ​​piece 701 that cooperates with the snap-fit ​​grooves 703. Each elastic snap-fit ​​piece 701 is snapped into its corresponding snap-fit ​​groove 703. The fixing plate 9 and the lens retaining ring 702 can be fastened by tightening the locking bolts 10 inside the fixing plate 9. When the lens develops aging and wear problems such as yellowing, wear, and reduced light transmittance after long-term use, simply loosen the locking bolts 10 and move the elastic snap-fit ​​piece 701 to release its snap-fit ​​engagement with the snap-fit ​​groove 703. The lens can then be quickly disassembled and replaced without disassembling the entire equipment. The disassembly and assembly operation is simple and efficient, effectively reducing the difficulty of later maintenance and the cost of use.

[0020] The top of the adjusting ring 806 is fixedly connected to several fixing plates 9. Each fixing plate 9 is threaded with a locking bolt 10. The fixing plate 9 is connected to the lens fixing ring 702 through the locking bolt 10, which can lock the adjusting ring 806 and the lens fixing ring 702 a second time after the adjustment is completed.

[0021] The lens bracket 1 has buckles 4 fixedly connected to both ends of its bottom, and reinforcing ribs 5 fixedly connected at equal intervals at the top edge of the lens bracket 1, which can effectively enhance the overall structural strength of the top of the lens bracket 1 and reduce deformation damage.

[0022] The bottom of the lens bracket 1 is provided with a through-hole for use with the second lens 3. The outer wall of the second lens 3 is pressed against the inner wall of the through-hole to ensure that the second lens 3 is firmly assembled and to prevent displacement and shaking during use.

[0023] The return spring 804 abuts against the inner wall of the locking rod 801 and the mounting groove 802. The return spring 804 is sleeved on the outer periphery of the anti-torsion post 803. The locking rod 801 is engaged with the corresponding locking hole 805, which can ensure that the locking rod 801 elastically expands and contracts stably and does not twist or shift.

[0024] Working principle and usage process of this invention: First step: During zoom adjustment, the operator can rotate the adjustment ring 806, which will drive the first lens 2 to rotate synchronously, thereby changing the relative orientation of the first lens 2 and the second lens 3, thus changing the size of the illumination spot. While rotating the adjustment ring 806, the operator can press the locking rod 801, which will compress the return spring 804, causing the locking rod 801 to retract into the mounting groove 802. By switching the alignment of different locking holes 805 with the locking rod 801, the rotation angle of the first lens 2 can be precisely adjusted, thus completing multi-level zoom adjustment. After adjustment, the return spring 804 can be reset and locked, realizing mechanical limit, replacing the traditional pure friction limit method, effectively avoiding the problems of lens shift, focal length wobbling, and unstable spot caused by equipment vibration. The second step: After zoom adjustment is completed, the operator can tighten the locking bolts 10 inside the fixing plate 9 to secure the fixing plate 9 to the lens fixing ring 702. When the lens develops yellowing, wear, or reduced light transmittance due to long-term use, simply loosen the locking bolts 10, move the elastic snap-fit ​​701 to release its engagement with the snap-fit ​​groove 703, and the lens can be quickly disassembled and replaced without disassembling the entire device. The disassembly and assembly operation is simple and efficient.

[0025] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-position adjustable zoom lens structure, comprising a lens holder (1), characterized in that: The lens bracket (1) has a second lens (3) inside, a first lens (2) on the top of the lens bracket (1), an outer fixing ring (6) fixedly connected to the outer periphery of the lens bracket (1), an adjustment component (8) for limiting the rotation of the first lens (2) on the top of the lens bracket (1), and a disassembly and assembly component (7) for facilitating the disassembly and assembly of the lens bracket (1) and the first lens (2) on the top of the lens bracket (1).

2. The multi-position adjustable zoom lens structure according to claim 1, characterized in that: The adjustment assembly (8) includes mounting grooves (802) at both ends inside the outer fixing ring (6). A snap-fit ​​rod (801) is slidably connected inside the mounting groove (802). Anti-torsion posts (803) are fixedly connected to the inner walls of the snap-fit ​​rod (801) and the mounting groove (802). A return spring (804) is provided on the opposite side of the two snap-fit ​​rods (801). An adjustment ring (806) is rotatably connected to the outer circumference of the outer fixing ring (6). A plurality of snap holes (805) are provided inside the adjustment ring (806) to cooperate with the snap-fit ​​rod (801). The plurality of snap holes (805) are arranged at equal intervals.

3. The multi-position adjustable zoom lens structure according to claim 1, characterized in that: The disassembly and assembly assembly (7) includes a lens fixing ring (702) fixedly connected to the outer periphery of the first lens (2). The lens fixing ring (702) has several snap-fit ​​grooves (703) inside. The top of the lens bracket (1) is fixedly connected to an elastic snap-fit ​​member (701) that cooperates with the snap-fit ​​grooves (703). The elastic snap-fit ​​member (701) is snapped into the corresponding snap-fit ​​groove (703).

4. The multi-position adjustable zoom lens structure according to claim 2, characterized in that: The top of the adjusting ring (806) is fixedly connected to several fixing plates (9), and each fixing plate (9) is threaded with a locking bolt (10). The fixing plate (9) is connected to the lens fixing ring (702) by the locking bolt (10).

5. The multi-position adjustable zoom lens structure according to claim 1, characterized in that: Both ends of the bottom of the lens bracket (1) are fixedly connected with buckles (4), and reinforcing ribs (5) are fixedly connected at equal intervals at the top edge of the lens bracket (1).

6. The multi-position adjustable zoom lens structure according to claim 1, characterized in that: The bottom of the lens bracket (1) is provided with a through-hole for use with the second lens (3), and the outer wall of the second lens (3) abuts against the inner wall of the through-hole.

7. The multi-position adjustable zoom lens structure according to claim 2, characterized in that: The return spring (804) abuts against the inner wall between the snap-fit ​​rod (801) and the mounting groove (802), the return spring (804) is sleeved on the outer periphery of the anti-torsion post (803), and the snap-fit ​​rod (801) is snapped into the corresponding snap-fit ​​hole (805).

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