Objective lens focal length correction device
By introducing transparent protective cover and fixed components into the objective lens focal length correction device, combining the servo motor and screw mechanism, the problem of the objective lens focal length correction operation is solved, the isolation protection and stable operation of the correction area are realized, and the protection is improved Performance and operability.
Patent Information
- Application Number
- CN202421587286.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The objective lens focal length correction operation is easily disturbed by human factors in the operating environment and cannot be isolated and protected, which affects the normal progress of the correction operation.
An objective lens focal length correction device is designed, including a transparent protective cover and a fixing assembly. The correction area is isolated through the "U" shaped structure of the mounting frame and the transparent protective cover, and the stable positioning and correction are achieved in combination with the servo motor and the screw mechanism to fix the clamp. The limit slider ensures stable clamping of the objective lens and prevents slipping.
The calibration area is effectively isolated, avoids human interference, improves protection performance, and enhances the stability and reliability of operation to ensure the normal progress of calibration operations.
Smart Images
Figure CN222280931U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of objective lens correction, in particular to an objective lens focal length correction device. Background Art
[0002] The objective lens is an important component in optical instruments, which is equivalent to the lens of a projector. The object forms an inverted and enlarged real image through the objective lens. In order to ensure the imaging effect of the objective lens, a focal length correction device needs to be used to correct the focal length of the objective lens during production or subsequent use.
[0003] For example, a 60 focal plane metallographic flat field infinity objective lens focal length correction device disclosed in the utility model with authorization announcement number CN220691179U relates to the field of objective lens correction technology, including a base plate, a strip seat, the strip seat is fixed on the base plate, the base plate is provided with a support frame, a strip groove is provided in the strip seat, a rotating shaft is placed in the strip groove, a shaft sleeve is sleeved on the rotating shaft, a sliding rail is penetrated in the strip groove, a sliding frame is provided on the shaft sleeve, a fixing clamp is provided at the upper end of the sliding frame through the rotating shaft, a fixing frame is fixed at one end of the sliding rail, a scale bar is provided on one side of the strip seat, the two sides of the sliding frame extend outwards and are fixed with a clamping plate, a pointer is fixed on the clamping plate on one side of the scale bar, and a radiator and a receiver are provided on the support frames on both sides. The utility model is easy to operate, convenient for clamping and positioning the lens, and the focus is obtained by emitting rays to the lens, and the distance between the focus and the lens is measured. The lens clamping part is easy to move, which is convenient for correcting the convergence of the focus, and is suitable for promotion. However, during the application of this technical solution, the focus correction operation is directly exposed to the operating environment and is easily affected by human factors, which may affect the normal progress of the objective lens focus correction operation. There is also a technical problem that the focus correction operation position cannot be isolated and protected without affecting the technicians' operation of the device. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the utility model provides an objective lens focal length correction device, which can solve the technical problem that the focal length correction operation is directly exposed to the operating environment and is easily interfered by human factors and affects the normal progress of the objective lens focal length correction operation, and there is a technical problem that the focal length correction operation position cannot be isolated and protected without affecting the operation of the device by the technicians.
[0005] To solve the above technical problems, the utility model provides the following technical solutions: an objective lens focal length correction device, comprising a base, a shell is arranged at the middle position of the top of the base, a fixing frame is arranged on both sides of the top of the base, a radiator is arranged on one side of the top of the fixing frame, and a receiver is arranged on the other side of the top of the fixing frame, a scale plate is arranged at the front end of the shell, a stable slide is arranged at the middle position of the top of the shell, a positioning groove is arranged at the top of the stable slide, a positioning frame is arranged on one side of the top of the shell, a lens is arranged inside the positioning frame, an adjusting and moving mechanism is arranged inside the shell, mounting frames are arranged on both sides of the top of the base, a transparent protective cover is arranged between the mounting frames, mounting strips are arranged at both ends of the inner side of the mounting frame, positioning slots are arranged on both sides of the two ends of the base, and fixing components are arranged at both ends of the inner side of the positioning groove.
[0006] As a preferred technical solution of the utility model, the installation frame and the transparent protective cover are in a "U" shape, and the installation card strip is inserted into the interior of the positioning slot.
[0007] As a preferred technical solution of the utility model, the adjusting and moving mechanism includes a screw rod, which is arranged at a middle position between the two sides of the shell, a servo motor is arranged at the bottom of one side of the fixed frame, a wire sleeve is arranged on the outside of the screw rod, a reserved groove is arranged at a middle position of the top end of the shell, and a connecting block is arranged at the top end of the wire sleeve.
[0008] As a preferred technical solution of the utility model, one side of the screw rod passes through one side inside the shell and the bottom end of one side of the fixed frame and is fixedly connected to the output end of the servo motor, and the top end of the connecting block passes through the reserved groove and is fixedly connected to the top of the inner side of the stable slide.
[0009] As a preferred technical solution of the present invention, the fixing component includes a fixing splint, which is arranged at both ends of the inner side of the positioning groove, a fastening screw is arranged on the outer side of the fixing splint, a through hole is arranged at the middle position of the top of both ends of the inner side of the positioning groove, one end of the fastening screw passes through the inside of the through hole, locking nuts are arranged on the outside of the fastening screws at both ends of the positioning groove, a limiting slider is arranged at the bottom end of the fixing splint, and a limiting groove is arranged at the bottom end of the inner side of the positioning groove.
[0010] As a preferred technical solution of the utility model, the fixed clamping plate is arc-shaped, the limiting sliding block is embedded in the limiting groove, and the limiting sliding block can slide in the limiting groove.
[0011] Compared with the prior art, the utility model can achieve the following beneficial effects:
[0012] 1. By arranging a protective component on the top of the base, after fixing the objective lens, the mounting frame and the transparent protective cover are connected to the outside of the device, and the mounting card strip is inserted into the inside of the positioning slot, so that the mounting frame and the transparent protective cover can be stably installed outside the correction position. The objective lens focal length correction area is isolated by the transparent protective cover to avoid human interference affecting the normal correction work, and does not affect the normal operation of the technical staff to observe the correction device, thereby effectively improving the protection performance of the device;
[0013] 2. By arranging fixing components at both ends of the inner side of the positioning groove, when in use, the objective lens that needs to be corrected in focal length is positioned and placed between the inner side of the positioning groove and the fixed clamping plate, and then the locking nut is tightened to tighten the fixed clamping plates toward each other, so as to fasten and clamp the objective lens, and when the fixed clamping plates are tightened and moved toward each other, the limit slider moves in the limit groove accordingly to stabilize it, thereby avoiding the objective lens from sliding down during the correction of the focal length of the objective lens and affecting the correction effect, and the operability is stronger. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0015] Figure 2 It is a schematic diagram of the top view structure of the utility model;
[0016] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the utility model in a front view;
[0017] Figure 4 For the utility model Figure 1 Enlarged structural diagram at A in the middle.
[0018] Among them: 1. Base; 2. Shell; 3. Scale plate; 4. Stable slide; 5. Positioning slot; 6. Reserved slot; 7. Radiometer; 8. Mounting strip; 9. Transparent protective cover; 10. Positioning frame; 11. Receiver; 12. Fixing frame; 13. Servo motor; 14. Mounting frame; 15. Fixing splint; 16. Locking nut; 17. Screw; 18. Positioning slot; 19. Thread sleeve; 20. Connecting block; 21. Lens; 22. Through hole; 23. Fastening screw; 24. Limiting slot; 25. Limiting slider. DETAILED DESCRIPTION
[0019] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.
[0020] Example
[0021] Please refer to Figure 1-4 As shown, the utility model provides an objective lens focal length correction device, including a base 1, a shell 2 is arranged at the middle position of the top of the base 1, fixed frames 12 are arranged on both sides of the top of the base 1, a radiometer 7 is arranged on one side of the top of the fixed frame 12, a receiver 11 is arranged on the other side of the top of the fixed frame 12, a scale plate 3 is arranged at the front end of the shell 2, a stable slide 4 is arranged at the middle position of the top of the shell 2, a positioning groove 5 is arranged on the top of the stable slide 4, a positioning frame 10 is arranged on one side of the top of the shell 2, a lens 21 is arranged inside the positioning frame 10, the objective lens positioned inside the positioning groove 5 is aligned with the light emission point of the radiometer 7, the focus of the objective lens is refracted onto the plane of the receiver 11, and whether the focus is clear is observed, a screw rod 17 is arranged at the middle position between the two sides inside the shell 2, and a fixed A servo motor 13 is arranged at the bottom of one side of the frame 12, one side of the screw rod 17 penetrates one side of the interior of the housing 2 and the bottom end of one side of the fixed frame 12 and is fixedly connected to the output end of the servo motor 13, a silk sleeve 19 is arranged on the outside of the screw rod 17, if the focal position is not correct, the servo motor 13 is started to drive the screw rod 17 to rotate and drive the silk sleeve 19 to move horizontally outside thereof, a reserved groove 6 is arranged at the middle position of the top end inside the housing 2, a connecting block 20 is arranged on the top end of the silk sleeve 19, the top end of the connecting block 20 penetrates the reserved groove 6 and is fixedly connected to the top inside the stable slide 4, when the silk sleeve 19 moves, the stable slide 4 is driven to move through the connecting block 20, thereby driving the positioning groove 5 and the objective lens to move, after obtaining clear focus imaging, the specific focal length of the objective lens is obtained according to the position of the front end of the stable slide 4 pointing to the scale plate 3 for calibration;
[0022] As a further implementation of this embodiment, Figure 1-4As shown, a U-shaped mounting frame 14 is provided on both sides of the top of the base 1, a U-shaped transparent protective cover 9 is provided between the mounting frames 14, mounting clips 8 are provided at both ends of the inner side of the mounting frame 14, and positioning slots 18 are provided on both sides of both ends of the base 1. The mounting clips 8 are inserted into the interior of the positioning slots 18, so that the mounting frame 14 and the transparent protective cover 9 can be stably installed outside the correction position, and the objective lens focal length correction area is isolated by the transparent protective cover 9 to avoid human interference affecting the normal correction work, and does not affect the normal operation of the correction device observed by the technicians, thereby effectively improving the protection performance of the device;
[0023] After fixing the objective lens, the mounting frame 14 and the transparent protective cover 9 are connected to the outside of the device, and the mounting card strip 8 is inserted into the inside of the positioning slot 18, so that the mounting frame 14 and the transparent protective cover 9 can be stably installed outside the correction position, and the objective lens focus correction area is isolated and protected by the transparent protective cover 9;
[0024] As a further implementation of this embodiment, Figure 1-4 As shown, the two ends of the inner side of the positioning groove 5 are provided with fixing components, and the fixing components include arc-shaped fixing clamps 15, which are arranged at the two ends of the inner side of the positioning groove 5, and the outer side of the fixing clamps 15 is provided with fastening screws 23, and the middle position of the top of the two ends of the inner side of the positioning groove 5 is provided with through holes 22, and one end of the fastening screw 23 passes through the inside of the through hole 22, and the fastening screws 23 at the two ends of the positioning groove 5 are provided with locking nuts 16. After the objective lens that needs to be corrected for focal length is positioned and placed between the inner side of the positioning groove 5 and the fixing clamps 15, Tighten the locking nut 16 to tighten the fixed clamping plate 15 toward each other, so as to fasten and clamp the objective lens. A limit slider 25 is provided at the bottom end of the fixed clamping plate 15, and a limit slot 24 is provided at the bottom end of the inner side of the positioning slot 5. The limit slider 25 is embedded in the inner part of the limit slot 24, and the limit slider 25 can slide in the limit slot 24. When the fixed clamping plate 15 is tightened and moved toward each other, the limit slider 25 moves in the limit slot 24 to stabilize it, thereby preventing the objective lens from sliding down during the process of correcting the focal length of the objective lens and affecting the correction effect, and the operability is stronger.
[0025] When in use, the objective lens that needs to be corrected for focal length is positioned and placed between the inner side of the positioning groove 5 and the fixed clamping plate 15, and then the locking nut 16 is tightened to tighten the fixed clamping plates 15 toward each other, thereby fastening and clamping the objective lens, and while the fixed clamping plates 15 are tightened and moved toward each other, the limiting slider 25 moves in the limiting groove 24 to stabilize it;
[0026] Specific working principle:
[0027] When using the objective lens focal length correction device, firstly position the objective lens that needs focal length correction and place it between the inner side of the positioning groove 5 and the fixed clamping plate 15, then tighten the locking nut 16 to tighten the fixed clamping plate 15 towards each other, so as to clamp the objective lens tightly, and while the fixed clamping plate 15 is tightened and moved towards each other, the limiting slider 25 moves in the limiting groove 24 to stabilize it, and then the mounting frame 14 and the transparent protective cover 9 are connected to the outside of the device, and the mounting card strip 8 is inserted into the inside of the positioning slot 18, so that the mounting frame 14 and the transparent protective cover 9 can be stably installed outside the correction position, and then the fixing clamping plate 15 is tightened and moved towards each other. The transparent protective cover 9 isolates and protects the focal length correction area of the objective lens, and the objective lens positioned and installed on the inner side of the positioning groove 5 is aligned with the light emission point of the radiator 7. The focus of the objective lens is refracted onto the plane of the receiver 11, and the focus is observed to be clear. If the focus position is not correct, the servo motor 13 is started to drive the screw rod 17 to rotate and drive the wire sleeve 19 to move horizontally outside it. When the wire sleeve 19 moves, it drives the stable slide 4 to move through the connecting block 20, thereby driving the positioning groove 5 and the objective lens to move. After obtaining a clear focus image, the specific focal length of the objective lens is obtained according to the position of the front end of the stable slide 4 pointing to the scale plate 3 for calibration.
[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An objective lens focal length correction device, comprising a base (1), characterized in that: A shell (2) is arranged at the middle position of the top of the base (1), a fixing frame (12) is arranged on both sides of the top of the base (1), a radiometer (7) is arranged on one side of the top of the fixing frame (12), and a receiver (11) is arranged on the other side of the top of the fixing frame (12), a scale plate (3) is arranged at the front end of the shell (2), a stabilizing slide (4) is arranged at the middle position of the top of the shell (2), a positioning groove (5) is arranged at the top of the stabilizing slide (4), and a positioning groove (6) is arranged at the top of the shell (2). A positioning frame (10) is provided on one side of the base, a lens (21) is provided inside the positioning frame (10), an adjusting and moving mechanism is provided inside the shell (2), mounting frames (14) are provided on both sides of the top of the base (1), a transparent protective cover (9) is provided between the mounting frames (14), mounting clips (8) are provided at both ends of the inner side of the mounting frames (14), positioning slots (18) are provided on both sides of the two ends of the base (1), and fixing components are provided at both ends of the inner side of the positioning slot (5).
2. The objective lens focal length correction device according to claim 1, characterized in that: The installation frame (14) and the transparent protective cover (9) are in a "U" shape, and the installation card strip (8) is inserted into the interior of the positioning slot (18).
3. The objective lens focal length correction device according to claim 1, characterized in that: The adjusting movement mechanism comprises a screw rod (17), the screw rod (17) being arranged at a middle position between two sides inside the housing (2), a servo motor (13) being arranged at the bottom of one side of the fixing frame (12), a thread sleeve (19) being arranged outside the screw rod (17), a reserved groove (6) being arranged at a middle position of the top end inside the housing (2), and a connecting block (20) being arranged at the top end of the thread sleeve (19).
4. The objective lens focal length correction device according to claim 3, characterized in that: One side of the screw rod (17) passes through one side of the interior of the housing (2) and the bottom end of one side of the fixing frame (12) and is fixedly connected to the output end of the servo motor (13), and the top end of the connecting block (20) passes through the reserved groove (6) and is fixedly connected to the top of the inner side of the stabilizing slide seat (4).
5. The objective lens focal length correction device according to claim 1, characterized in that: The fixing assembly comprises a fixing clamp (15), wherein the fixing clamp (15) is arranged at two ends of the inner side of the positioning groove (5), a fastening screw (23) is arranged on the outer side of the fixing clamp (15), a through hole (22) is arranged at the middle position of the top of the two ends of the inner side of the positioning groove (5), one end of the fastening screw (23) passes through the inside of the through hole (22), and locking nuts (16) are arranged outside the fastening screws (23) at both ends of the positioning groove (5), a limiting slider (25) is arranged at the bottom end of the fixing clamp (15), and a limiting groove (24) is arranged at the bottom end of the inner side of the positioning groove (5).
6. The objective lens focal length correction device according to claim 5, characterized in that: The fixed clamping plate (15) is arc-shaped, and the limiting sliding block (25) is embedded in the inside of the limiting groove (24), and the limiting sliding block (25) can slide in the limiting groove (24).