Lens angle micro-adjustment structure
By using an eccentric adjustment component and flange structure, combined with reference lines and an angle scale, a micro-adjustment of the lens angle is achieved, solving the problems of high cost and complex structure in traditional methods. This method is suitable for adjusting the lens angle of optical equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING SUPERYEARS GENE TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-10
AI Technical Summary
Traditional lens angle adjustment methods cannot achieve small-angle micro-adjustments, and conventional closed-loop motor systems are costly and complex in structure, making them difficult to apply in space-constrained scenarios.
It adopts an eccentric adjustment component and flange structure. The flange can be rotated slightly by inserting the eccentric adjustment component into the pin hole. Precise angle adjustment is achieved by combining the reference line and angle scale. The lens angle is locked by the cooperation of the waist-shaped hole and the stud.
It enables minute adjustments to the lens angle, simplifies the operation process, reduces costs, and is suitable for precise adjustment of lens angles in space-constrained optical devices.
Smart Images
Figure CN224480607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical path system technology, specifically to a lens angle micro-adjustment structure. Background Technology
[0002] In optical systems, light reflection is achieved through lenses. The reflection angle of these lenses is crucial for precise optical reflection. During optical assembly, the installation and fixation of lenses must be adjustable, either in position or angle. Traditional angle adjustment typically involves machining a waist-shaped hole in the circumference, using the hole's size as the adjustment amount. This method is simple and economical, but adjustment usually requires manual movement, making it impossible to achieve small-angle micro-adjustments. A conventional solution is to add a closed-loop drive motor to achieve closed-loop angle rotation control. However, this system requires a larger installation space and a sophisticated control system, significantly increasing costs and resulting in a bulky mechanism. Utility Model Content
[0003] In view of the above-mentioned technical deficiencies, the purpose of this utility model is to provide a lens angle micro-adjustment structure that achieves micro-adjustment of the angle through a simple structure.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a lens angle micro-adjustment structure, comprising:
[0005] The device body has mounting holes.
[0006] A columnar body passes through a mounting hole and rotates to engage with it. One end of the columnar body is fixed with a flange, and the other end is fitted with a lens. The flange and the lens are located on opposite sides of the mounting hole, respectively.
[0007] The flange has an adjustment groove, and the equipment body has a pin hole located in the adjustment groove. The pin hole is used to insert an eccentric adjustment component. When the eccentric adjustment component rotates about the axis of the pin hole, the column rotates about the axis of the mounting hole.
[0008] Preferably, the eccentric adjustment component includes a rod body, one end of which is fixed with a positioning pin. The axis of the positioning pin is parallel to the axis of the rod body, and the positioning pin is eccentrically distributed at the end of the rod body.
[0009] Preferably, the circumferential surface of the rod body transitions into the inner wall of the adjustment groove.
[0010] Preferably, the flange has a reference line on its edge, the reference line pointing to the center of the flange, and an angle scale coaxial with the flange is fixed on the equipment body.
[0011] Preferably, a throttle is fixed on the rod, and the throttle is in the shape of a straight line.
[0012] Preferably, the end of the locating pin is tapered.
[0013] Preferably, the flange has a waist-shaped hole, and the equipment body has a threaded hole corresponding to the waist-shaped hole. A stud is threaded onto the threaded hole, and the threaded head of the stud rests against the flange.
[0014] Preferably, the length direction of the waist-shaped hole is tangent to the rotation direction of the columnar body; an anti-loosening washer is fitted on the stud between the screw head and the flange.
[0015] Preferably, there are two oblong holes, symmetrically distributed on both sides of the flange.
[0016] Preferably, the adjustment groove is formed on the edge of the flange and is open at one end.
[0017] The beneficial effects of this utility model are as follows:
[0018] This invention features an adjustment groove on the flange and a pin hole on the device body within the adjustment groove. When the eccentric adjustment component is inserted into the pin hole, its eccentricity causes it to rotate around the pin hole, applying a thrust to the side wall of the adjustment groove. This causes the flange to rotate around the axis of the mounting hole, achieving a small angular displacement of the column and lens. No motor or complex control system is required, making it particularly suitable for space-constrained applications. The reference lines on the flange align with the angle scale on the device body, allowing operators to directly read the lens rotation angle, avoiding the recalibration problems caused by traditional waist-shaped holes that rely on experience. The clearance fit between the waist-shaped hole and the stud allows for a small range of flange rotation; once the angle is adjusted, the stud can be tightened again. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the waist-shaped hole and adjustment groove in a lens angle micro-adjustment structure provided in an embodiment of the present invention.
[0021] Figure 2 This is a schematic diagram of bolts fixing a flange to the device body in a lens angle micro-adjustment structure provided in an embodiment of the present utility model.
[0022] Figure 3 This is a schematic diagram of a lens angle micro-adjustment structure provided in this embodiment of the present invention, in which an eccentric adjustment element drives the flange to rotate.
[0023] Figure 4 The front view of a lens angle micro-adjustment structure provided in this embodiment of the present invention when adjusting the angle.
[0024] Figure 5 for Figure 4 Sectional view at point AA.
[0025] Figure 6 for Figure 4 Sectional view at point BB.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Equipment body, 2. Mounting hole, 3. Column, 4. Flange, 5. Adjustment groove, 6. Pin hole, 7. Rod, 8. Positioning pin, 9. Reference line, 10. Angle scale, 11. Turn handle, 12. Waist hole, 13. Stud, 14. Threaded head, 15. Anti-loosening washer. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Example 1:
[0030] like Figures 1 to 6 As shown, Embodiment 1 of this utility model provides a lens angle micro-adjustment structure, which is particularly suitable for scenarios with high requirements for lens angle accuracy, small adjustment range and limited installation space (such as objective lens calibration of optical testing instruments, optical path fine adjustment of laser collimation equipment, etc.).
[0031] Because the technical solution of this utility model has wide applicability and can be used for lens angle adjustment in various optical path devices, the device body 1 is used to refer to the device for lens mounting. The device body 1 has a mounting hole 2, which is a standard cylindrical through hole, mainly used to provide rotational support for the columnar body 3 and limit its rotation axis. The columnar body 3 is a cylindrical rod adapted to the mounting hole 2, and its outer diameter and the inner diameter of the mounting hole 2 are designed with a clearance fit. This fit ensures that the columnar body 3 can rotate flexibly within the mounting hole 2, while also limiting the radial wobble of the columnar body 3 through a small clearance, ensuring that it can only perform pure rotational motion around the axis of the mounting hole 2, avoiding radial offset errors during adjustment.
[0032] One end of the columnar body 3 is provided with a flange 4 integrally formed with the columnar body 3. The flange 4 is a circular plate structure with a diameter larger than the diameter of the mounting hole 2, forming a "limiting boss" structure, so that the flange 4 fits tightly against one side surface of the equipment body 1. The other end of the columnar body 3 is equipped with a lens through a detachable / fixed connection method such as threaded connection or adhesive (threaded connection facilitates lens replacement and maintenance, while adhesive connection ensures the stability of lens installation). Finally, the flange 4 and the lens are located on both sides of the mounting hole 2, and the angle of the lens can be adjusted by rotating the flange 4.
[0033] like Figure 1 As shown, the flange 4 has an adjustment groove 5 on its edge, which is shaped like a semi-waisted groove. One end of the adjustment groove 5 is open, making it an open groove. A pin hole 6 is provided on the equipment body 1 corresponding to the adjustment groove 5, located inside the adjustment groove 5. The axis of the pin hole 6 is parallel to the axis of the mounting hole 2, together forming a "dual-axis positioning" structure. To drive the flange 4 to rotate slightly, the eccentric adjustment component designed in this invention includes a cylindrical rod 7 and an eccentric positioning pin 8. The positioning pin 8 is fixed to one end of the rod 7, and its axis is parallel to but offset from the axis of the rod 7 by a certain distance (forming an eccentric feature). The end of the positioning pin 8 is machined with a 45° cone angle. This cone angle design serves as a guide, allowing operators to quickly align and insert the positioning pin 8 into the pin hole 6, improving operational convenience.
[0034] The circumferential surface of the rod 7 and the inner wall of the adjustment groove 5 adopt a transition fit. This ensures a tight contact between the rod 7 and the adjustment groove 5, while allowing the rod 7 to rotate within a small range within the adjustment groove 5. When the operator holds the rod 7 and rotates it by holding the straight handle 11 (the straight design is ergonomic and facilitates finger application), the eccentric positioning pin 8 makes a circular motion around the axis of the pin hole 6. At this time, the outer side of the rod 7 will contact the side wall of the adjustment groove 5 and apply a radial thrust. Since the adjustment groove 5 is located at the edge of the flange 4, this thrust will be transmitted to the flange 4 through the groove wall, forcing the flange 4 to rotate around the axis of the mounting hole 2, thereby causing the columnar body 3 and the lens to produce a small angular displacement, achieving a micro-adjustment of the lens angle.
[0035] Example 2:
[0036] Building upon Embodiment 1, to visualize the angle adjustment, this embodiment features a reference line 9 engraved on the edge of the flange 4. The length of the reference line 9 extends from the edge of the flange 4 towards its center (ensuring the direction of the line aligns with the radius of the flange 4). A circular arc-shaped angle scale 10, coaxial with the flange 4, with a scale accuracy of 0.5°, is fixed to the surface of the device body 1. When the operator adjusts the lens angle, they can observe the real-time changes in the corresponding positions of the reference line 9 and the angle scale 10, thereby reading the current rotation angle of the lens. This design overcomes the shortcomings of traditional adjustment methods that rely solely on experience and feel to estimate the angle, improving adjustment efficiency and accuracy.
[0037] Example 3:
[0038] like Figure 1 , Figure 2 and Figure 6 As shown, based on Embodiments 1 and 2, to balance adjustment flexibility and locking stability, two oblong holes 12 are symmetrically arranged on the flange 4 (the symmetrical distribution ensures that the flange 4 is subjected to balanced force during adjustment, avoiding unilateral tilting). The long axis of the oblong hole 12 is aligned with the tangent direction of the rotation of the columnar body 3 (this design ensures that the movement direction of the stud 13 within the oblong hole 12 is consistent with the rotation direction of the flange 4, avoiding additional frictional resistance between the stud 13 and the side wall of the oblong hole 12 during rotation). A threaded hole is provided on the equipment body 1 corresponding to the position of the oblong hole 12. The diameter of the threaded hole is smaller than the width of the oblong hole 12 to prevent interference between the inner wall of the oblong hole 12 and the stud 13 when the flange 4 rotates. The stud 13 passes through the oblong hole 12 and is threaded into the threaded hole. An anti-loosening washer 15 is provided below the threaded head 14 of the stud 13.
[0039] During use, the operator first loosens the stud 13 before adjustment (at this time, the pressure between the screw head 14 and the flange 4 decreases, and the flange 4 can rotate freely within the range allowed by the waist-shaped hole 12); during adjustment, the positioning pin 8 is inserted into the pin hole 6, and the rod body 7 is rotated by the handle 11, causing the rod body 7 to rotate eccentrically, pushing the flange 4 to rotate to the target angle; after adjustment, the stud 13 is retightened (the screw head 14 presses against the flange 4, and the anti-loosening gasket 15 generates pre-tightening force through elastic deformation to prevent the stud 13 from loosening on its own due to external factors such as vibration), and finally the lens angle is locked in the required position.
[0040] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A lens angle micro-adjustment structure, characterized in that, include: The device body has mounting holes. A columnar body passes through a mounting hole and rotates to engage with it. One end of the columnar body is fixed with a flange, and the other end is fitted with a lens. The flange and the lens are located on opposite sides of the mounting hole, respectively. The flange has an adjustment groove, and the equipment body has a pin hole located in the adjustment groove. The pin hole is used to insert an eccentric adjustment component. When the eccentric adjustment component rotates about the axis of the pin hole, the column rotates about the axis of the mounting hole.
2. The lens angle micro-adjustment structure as described in claim 1, characterized in that, The eccentric adjustment component includes a rod body, one end of which is fixed with a positioning pin. The axis of the positioning pin is parallel to the axis of the rod body, and the positioning pin is eccentrically distributed at the end of the rod body.
3. The lens angle micro-adjustment structure as described in claim 2, characterized in that, The circumferential surface of the rod body transitions into the inner wall of the adjustment groove.
4. The lens angle micro-adjustment structure as described in claim 2, characterized in that, The flange has a reference line on its edge, which points to the center of the flange. An angle scale coaxial with the flange is fixed on the equipment body.
5. The lens angle micro-adjustment structure as described in claim 2, characterized in that, A throttle is fixed to the rod, and the throttle is in the shape of a straight line.
6. The lens angle micro-adjustment structure as described in claim 2, characterized in that, The end of the locating pin is tapered.
7. The lens angle micro-adjustment structure as described in claim 1, characterized in that, The flange has a waist-shaped hole, and the equipment body has a threaded hole corresponding to the waist-shaped hole. A stud is threaded onto the threaded hole, and the threaded head of the stud rests against the flange.
8. The lens angle micro-adjustment structure as described in claim 7, characterized in that, The length direction of the waist-shaped hole is tangent to the rotation direction of the columnar body; an anti-loosening washer is fitted on the stud between the screw head and the flange.
9. The lens angle micro-adjustment structure as described in claim 7, characterized in that, There are two waist-shaped holes, symmetrically distributed on both sides of the flange.
10. The lens angle micro-adjustment structure as described in claim 1, characterized in that, The adjustment groove is located on the edge of the flange and is open at one end.