A microscope lens zoom body adjusting device

Abstract

The utility model discloses a microscope lens variable power body adjusting device relates to variable power body adjusting device field. Including upper fixed lens and lower fixed lens, is equipped with adjusting assembly between upper fixed lens and lower fixed lens, adjusting assembly includes adjusting part and moving lens, and adjusting part is located between upper fixed lens and lower fixed lens, and adjusting part is located between upper fixed lens and lower fixed lens and rotates with the center of the central axis of upper fixed lens and lower fixed lens, moving lens is located on adjusting part, and moving lens reciprocatingly moves between upper fixed lens and lower fixed lens when adjusting part rotates, and upper fixed lens, moving lens and lower fixed lens are coaxial. The present application has realized the multiple adjustment of any in variable power body adjusting process, and the advantage that the practical range is wider.

Description

Technical Field

[0001] This utility model relates to the field of zoom adjustment devices, and in particular to an improvement of a zoom adjustment device for a microscope lens. Background Technology

[0002] Microscope magnification adjustment depends on adjusting the magnification of the eyepiece or objective lens. Generally, microscopes are adjusted in two ways: coarse adjustment and fine adjustment, to achieve different magnifications. Both coarse and fine adjustments involve adjusting the distance between the objective and eyepiece to obtain a clear image. The objective and eyepiece lenses themselves do not have magnification adjustment capabilities. Therefore, for high-magnification imaging, it is necessary to change the lens or use a fixed magnification adjustment method to meet usage needs, such as only being able to switch between x2, x4, x8, and x16. Furthermore, most microscopes still use eyepiece replacement for magnification adjustment. However, as the requirements for precise operation increase, the need for more refined magnification adjustment becomes increasingly demanding, and existing adjustment methods are clearly insufficient to meet these needs. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a microscope lens zoom adjustment device.

[0004] This utility model is achieved by the following technical solution: a microscope lens zoom adjustment device, including an upper fixed lens and a lower fixed lens, wherein an adjustment component is provided between the upper fixed lens and the lower fixed lens;

[0005] The adjustment assembly includes an adjustment part and a movable lens. The adjustment part is disposed between the upper fixed lens and the lower fixed lens, and the adjustment part is disposed between the upper fixed lens and the lower fixed lens and rotates about the central axis of the upper fixed lens and the lower fixed lens.

[0006] The movable lens is disposed on the adjustment part. When the adjustment part rotates, the movable lens reciprocates between the upper fixed lens and the lower fixed lens. The upper fixed lens, the movable lens and the lower fixed lens are coaxial.

[0007] The adjustment unit includes a rotating body rotatably connected between the upper fixed lens and the lower fixed lens. The outer wall of the rotating body is provided with external meshing teeth. A gear set is provided on one side of the upper fixed lens or the lower fixed lens for meshing with the external meshing teeth to drive the rotating body to rotate.

[0008] The movable lens is disposed inside the rotating body. A spiral groove is provided on the inner wall of the rotating body. The edge of the movable lens is inserted into the spiral groove. A limiting shaft is provided between the upper fixed lens and the lower fixed lens. The limiting shaft passes through the movable lens. When the rotating body rotates, the movable lens moves back and forth between the upper fixed lens and the lower fixed lens.

[0009] The movable lens includes a movable plate with a central opening for mounting the movable lens. A limiting hole is opened on one side of the movable plate for the limiting shaft to pass through. A limiting claw extends outward from the edge of the movable plate and is inserted into a spiral groove. When the rotating body rotates, the limiting claw moves in the spiral groove, causing the movable plate to move between the upper fixed lens and the lower fixed lens.

[0010] The gear set includes a mounting frame, in which a transmission gear and a prime mover gear are rotatably connected. The mounting frame is fixed to the upper fixed lens or the lower fixed lens and extends in the direction of the external meshing screw teeth.

[0011] The transmission gear is rotatably connected to the mounting frame, and one end of the transmission gear extends outward and passes through the mounting frame. The prime mover gear is fixed to the end of the transmission gear that extends out of the mounting frame. When the prime mover gear rotates, it drives the transmission gear to rotate coaxially. The transmission gear meshes with the external meshing teeth and drives the rotating body to rotate.

[0012] An adjustment knob runs through the mounting frame, and a drive gear is mounted on the shaft of the adjustment knob. The drive gear meshes with the prime mover gear.

[0013] The upper fixed lens includes an upper outer frame and an upper mounting base plate. The upper mounting base plate has an opening for mounting the upper lens. The upper mounting base plate is fixed on the upper outer frame. The upper outer frame extends downward to form a fixing edge. An upper annular groove is provided on the outer wall of one end of the rotating body. The fixing edge is inserted into the upper annular groove.

[0014] The lower fixed lens includes a lower mounting base plate with an opening for mounting the lower lens, and the lower mounting base plate is fixed to the upper mounting base plate by a limiting shaft.

[0015] A mounting plate is fixed on the lower mounting base plate. The mounting plate has holes for mounting a secondary lens. The secondary lens, the lower lens, and the upper lens are coaxial.

[0016] Compared to existing technologies, this invention, by rotating the knob in this embodiment, essentially uses gear meshing for transmission, thereby enabling the movement of the moving lens. The moving lens moves smoothly by reciprocating linearly through the spiral groove of the rotating body. The damping force between the rotating body and the gear set during rotation allows the rotation to stop at any moment. When the meshing stops at any point, the moving lens hovers at that location, thus achieving magnification changes. Because the gears can stop at any time during the adjustment process, the moving lens can hover anywhere between the upper and lower lenses, enabling arbitrary magnification adjustments during zoom adjustment, thus broadening its practical application. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the microscope lens zoom body in this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the internal structure of the microscope lens zoom body in this utility model;

[0019] In the diagram: 1. Upper fixed lens; 11. Upper fixed base plate; 12. Upper outer frame; 121. Fixed edge; 13. Upper lens; 2. Lower fixed lens; 21. Lower mounting base plate; 22. Limiting shaft; 23. Lower lens; 24. Sub-mounting plate; 25. Sub-lens; 3. Moving lens; 31. Moving plate; 32. Moving lens; 33. Limiting claw; 4. Adjustment assembly; 41. Adjustment part; 411. Rotating body; 412. External meshing tooth; 413. Spiral groove; 414. Annular groove; 42. Gear set; 421. Mounting frame; 422. Adjustment knob; 423. Transmission gear; 424. Prime gear; 425. Driving gear. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] Reference Figure 1-2A microscope lens zoom adjustment device includes an upper fixed lens 1 and a lower fixed lens 2, with an adjustment assembly 4 positioned between them. In this embodiment, the adjustment assembly 4 includes an adjustment section 41 and a movable lens 3. The adjustment section 41 is located between the upper and lower fixed lenses 1 and rotates around the central axis of the upper and lower fixed lenses 1 and 2. When rotating, if no external force is applied to the adjustment assembly 4, the adjustment section 41 stops rotating and remains in its original position, allowing the movable lens 3 to be suspended at that point, thus achieving multi-magnification adjustment. Furthermore, since the entire adjustment process can be stopped and maintained at any point, the movable lens 32 can be suspended at any point between the upper lens 13 and the lower lens 23, realizing arbitrary magnification adjustment during the zoom adjustment process, thus broadening its practical application.

[0022] In this embodiment, a cavity is formed between the upper fixed lens 1 and the lower fixed lens 2 for mounting the movable lens 3. Specifically, the upper fixed lens 1 includes an upper outer frame 12 and an upper mounting base. The upper mounting base has an opening for mounting the upper lens 13. The upper mounting base is fixed to the upper outer frame 12. The upper outer frame 12 extends downward to form a fixing edge 121. An upper annular groove 414 is provided on the outer wall of one end of the adjusting part 41, and the fixing edge 121 is inserted into the upper annular groove 414. The corresponding lower fixed lens 2 includes a lower mounting base 21. The lower mounting base 21 has an opening for mounting the lower lens 23. The lower mounting base 21 is fixed to the upper mounting base by a limiting shaft 22. In addition to fixing the upper mounting base and the lower mounting base 21, the limiting shaft 22 can also guide and limit the movement of the movable lens 3, preventing the movable lens 3 from rotating. To improve the magnification adjustment effect, a secondary mounting plate 24 is fixed on the lower mounting base 21. The secondary mounting plate 24 has openings for mounting a secondary lens 25. The secondary lens 25, lower lens 23, and upper lens 13 are coaxial. As the moving lens 3 moves between the upper and lower mounting bases 21, different magnification combinations are achieved. Furthermore, since the moving lens 3 can stop at will, any magnification combination can be achieved within a certain range during actual use, thus expanding the application scenarios.

[0023] In this embodiment, the movable lens 3 is mounted on the adjusting part 41. When the adjusting part 41 rotates, the movable lens 3 reciprocates between the upper fixed lens 1 and the lower fixed lens 2. The upper fixed lens 1, the movable lens 3, and the lower fixed lens 2 are coaxial. Specifically, the adjusting part 41 includes a rotating body 411 rotatably connected between the upper fixed lens 1 and the lower fixed lens 2. The outer wall of the rotating body 411 is provided with external meshing teeth 412. A gear set 42 is provided on one side of the upper fixed lens 1 or the lower fixed lens 2 for meshing and transmission with the external meshing teeth 412, thereby driving the rotating body 411 to rotate. An upper annular groove 414 is formed on the outer wall of the rotating body 411 near one of its ends, and a fixing edge 121 is engaged in the upper annular groove 414. At this time, the fixing edge 121 acts as a track in the upper annular groove 414 and does not affect the rotation of the rotating body 411. Furthermore, multiple grooves can be provided between the rotating body 411 and the fixed edge 121 to form a dog-tooth interlocking pattern, increasing the friction during rotation and providing sufficient damping when stopped, so that the rotation can stop at any position without any backspinning. This allows the moving lens 3 to stop at any position between the upper fixed lens 1 and the lower fixed lens 2 during adjustment, realizing the adjustment of different magnifications between the upper fixed lens 1 and the lower moving lens 3, thus broadening its practical application.

[0024] In this embodiment, the movable lens 3 is disposed inside the rotating body 411. The inner wall of the rotating body 411 is provided with a spiral groove 413. The edge of the movable lens 3 is inserted into the spiral groove 413. The limiting shaft 22 between the upper fixed lens 1 and the lower fixed lens 2 passes through the movable lens 3. When the rotating body 411 rotates, the movable lens 3 reciprocates between the upper fixed lens 1 and the lower fixed lens 2. Specifically, the movable lens 3 includes a movable plate 31. The center opening of the movable plate 31 is used to install the movable lens 32. A limiting hole is opened on one side of the movable plate 31 for the limiting shaft 22 to pass through. The edge of the movable plate 31 extends outward to form a limiting claw 33, which is inserted into the spiral groove 413. When the rotating body 411 rotates, the limiting claw 33 moves within the spiral groove 413, causing the movable plate 31 to move between the upper fixed lens 1 and the lower fixed lens 2.

[0025] The gear set 42 of the corresponding rotating body 411 includes a mounting frame 421. A transmission gear and a prime mover gear 424 are rotatably connected within the mounting frame 421. The mounting frame 421 is fixed to the upper fixed lens 1 or the lower fixed lens 2 and extends towards the external meshing teeth 412. The position of the mounting frame 421 depends on the position of the external meshing teeth 412 on the rotating body 411. If the external meshing teeth 412 are close to the upper fixed lens 1, the mounting frame 421 is fixed to the outer edge of the upper fixed lens 1; otherwise, it is fixed to the outer edge of the lower fixed lens 2. Specifically, in this embodiment, the transmission gear is rotatably connected to the mounting frame 421, and one end of the transmission gear extends outward and passes through the mounting frame 421. The prime mover gear 424 is mounted and fixed at the end of the transmission gear that extends out of the mounting frame 421. When the prime mover gear 424 rotates, it drives the transmission gear to rotate coaxially. The transmission gear meshes with the external meshing teeth 412, causing the rotating body 411 to rotate. An adjustment knob runs through the mounting frame 421. A drive gear 425 is mounted on the shaft of the adjustment knob, and the drive gear 425 meshes with the prime mover gear 424. During adjustment, rotating the adjustment knob drives the gear set 42 to rotate the rotating body 411, causing the movable lens 3 to rise or fall. This adjusts the distance between the upper fixed lens 1, the movable lens 3, and the lower fixed lens 2, thereby achieving different magnification adjustments, expanding its application range, and enabling arbitrary magnification adjustment within a certain range for the entire microscope. Furthermore, it reduces the occurrence of jamming, makes operation more stable, and broadens the scope of application.

[0026] Compared to existing technologies, this invention, by rotating the knob in this embodiment, essentially transmits power through gear meshing, thereby enabling the movement of the movable lens 32. The movable lens 32 moves in a straight line back and forth via the spiral groove 413 of the rotating body 411, achieving smooth movement. The damping force between the rotating body 411 and the gear set 42 during rotation allows the rotation to stop at any time. When the meshing stops at any point, the movable lens 32 hovers at that location, thus achieving magnification changes. Because the gears can stop at any time during the entire adjustment process, the movable lens 32 can hover anywhere between the upper lens 13 and the lower lens 23, thereby achieving arbitrary magnification adjustment during zoom adjustment, broadening its practical application.

[0027] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A microscope lens zoom adjustment device, comprising an upper fixed lens and a lower fixed lens, characterized in that: An adjustment assembly is provided between the upper fixed lens and the lower fixed lens; The adjustment assembly includes an adjustment part and a movable lens. The adjustment part is disposed between the upper fixed lens and the lower fixed lens, and the adjustment part is disposed between the upper fixed lens and the lower fixed lens and rotates about the central axis of the upper fixed lens and the lower fixed lens. The movable lens is disposed on the adjustment part. When the adjustment part rotates, the movable lens reciprocates between the upper fixed lens and the lower fixed lens. The upper fixed lens, the movable lens and the lower fixed lens are coaxial.

2. The microscope lens zoom adjustment device according to claim 1, characterized in that: The adjustment unit includes a rotating body rotatably connected between the upper fixed lens and the lower fixed lens. The outer wall of the rotating body is provided with external meshing teeth. A gear set is provided on one side of the upper fixed lens or the lower fixed lens for meshing with the external meshing teeth to drive the rotating body to rotate. The movable lens is disposed inside the rotating body. A spiral groove is provided on the inner wall of the rotating body. The edge of the movable lens is inserted into the spiral groove. A limiting shaft is provided between the upper fixed lens and the lower fixed lens. The limiting shaft passes through the movable lens. When the rotating body rotates, the movable lens moves back and forth between the upper fixed lens and the lower fixed lens.

3. The microscope lens zoom adjustment device according to claim 2, characterized in that: The movable lens includes a movable plate with a central opening for mounting the movable lens. A limiting hole is opened on one side of the movable plate for the limiting shaft to pass through. A limiting claw extends outward from the edge of the movable plate and is inserted into a spiral groove. When the rotating body rotates, the limiting claw moves in the spiral groove, causing the movable plate to move between the upper fixed lens and the lower fixed lens.

4. The microscope lens zoom adjustment device according to claim 3, characterized in that: The gear set includes a mounting frame, in which a transmission gear and a prime mover gear are rotatably connected. The mounting frame is fixed to the upper fixed lens or the lower fixed lens and extends in the direction of the external meshing teeth. The transmission gear is rotatably connected to the mounting frame, and one end of the transmission gear extends outward and passes through the mounting frame. The prime mover gear is fixed to the end of the transmission gear that extends out of the mounting frame. When the prime mover gear rotates, it drives the transmission gear to rotate coaxially. The transmission gear meshes with the external meshing teeth and drives the rotating body to rotate. An adjustment knob runs through the mounting frame, and a drive gear is mounted on the shaft of the adjustment knob. The drive gear meshes with the prime mover gear.

5. A microscope lens zoom factor adjustment device according to claim 2, characterized in that: The upper fixed lens includes an upper outer frame and an upper mounting base plate. The upper mounting base plate has an opening for mounting the upper lens. The upper mounting base plate is fixed on the upper outer frame. The upper outer frame extends downward to form a fixing edge. An upper annular groove is provided on the outer wall of one end of the rotating body. The fixing edge is inserted into the upper annular groove.

6. A microscope lens zoom factor adjustment device according to claim 5, characterized in that: The lower fixed lens includes a lower mounting base plate with an opening for mounting the lower lens, and the lower mounting base plate is fixed to the upper mounting base plate by a limiting shaft.

7. A microscope lens zoom factor adjustment device according to claim 6, characterized in that: A mounting plate is fixed on the lower mounting base plate. The mounting plate has holes for mounting a secondary lens. The secondary lens, the lower lens, and the upper lens are coaxial.

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