Microscope objective fine focusing device

Abstract

The utility model relates to optical instrument field discloses a microscope objective lens fine tuning focusing device, including focusing tube, the pipe body of focusing tube is provided with protection mechanism, the protection mechanism includes the multiple outer tubes of fixed connection in the pipe body of focusing tube, the one end away from focusing tube of outer tube all slide connections have inner tube, the inside of outer tube all is provided with spring, the one end away from outer tube of inner tube all fixedly connects with the buffer leather cover, the protection mechanism still includes second protection cover and first protection cover, this focusing device through the cooperation of outer tube, inner tube, spring and buffer leather cover can effectively increase a buffer function when accidentally falling, then through the first protection cover and second protection cover that set up, thereby can effectively protect the rim at focusing tube, through the setting protection mechanism, can effectively reduce the injury when accidentally falling, reduce the precision damage of device because of knock.

Description

Technical Field

[0001] This utility model relates to the field of optical instruments, and in particular to a micro-adjustment focusing device for a microscope objective. Background Technology

[0002] A microscope is a scientific instrument that uses optics to magnify the details of tiny objects and is used to observe microscopic structures that are indistinguishable to the naked eye. The objective lens is the core component of the microscope, located at the lower end of the microscope tube near the object being observed. Its function is to magnify the object and form a clear primary image. The objective lens fine-motion focusing device controls the minute raising and lowering of the objective lens through a precise mechanical structure, thereby completing the fine calibration of the sample's focal plane.

[0003] Some existing objective lens fine focusing devices generally focus the objective lens by turning the threads. The threads are not precise enough for focusing and can strip after prolonged use. In addition, some existing objective lens fine focusing devices do not have protective functions. Since the objective lens fine focusing device is a high-precision instrument, it can be irreversibly damaged if it is accidentally dropped.

[0004] Therefore, those skilled in the art have provided a microscope objective lens micro-adjustment focusing device to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a micro-adjustment focusing device for microscope objectives. This focusing device uses gears and toothed grooves to mesh, thereby driving a rotating tube. The rotating tube then drives a limiting rod, which in turn moves the objective up and down through the engagement of a limiting groove and a limiting rod. This focusing mechanism effectively avoids the slippage that occurs in traditional focusing devices, resulting in greater precision during daily use.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A microscope objective lens micro-adjustment focusing device includes a focusing tube, an objective lens is disposed inside the focusing tube, a focusing mechanism is disposed at the lower end of the inner wall of the focusing tube, the focusing mechanism includes a rotating groove formed at the lower end of the inner wall of the focusing tube, a rotating tube is rotatably connected inside the rotating groove, and limiting rods are fixedly connected to both sides of the inner wall of the rotating tube, the rotating tube body is provided with a toothed groove, a gear is rotatably connected to the front end of the rotating groove, and the focusing mechanism also includes a limiting groove, a limiting groove, and a limiting rod;

[0008] The focusing tube is provided with a protective mechanism, which includes multiple outer tubes fixedly connected to the focusing tube body. Each outer tube is slidably connected to an inner tube at the end away from the focusing tube. Each outer tube is provided with a spring inside. Each inner tube is fixedly connected to a buffer ring at the end away from the outer tube. The protective mechanism also includes a second protective sleeve and a first protective sleeve.

[0009] Through the above technical solution, the focusing device drives the rotating tube by meshing the gear and the tooth groove. The rotating tube then drives the limiting rod. The limiting groove and the limiting rod cooperate, and the limiting slot and the limiting rod cooperate, so that the objective lens moves up and down. Through the setting of the focusing mechanism, the slippage of the traditional focusing device can be effectively avoided, so that it can be more accurate in daily use.

[0010] Furthermore, a threaded tube is fixedly connected to the upper surface of the focusing tube;

[0011] The above technical solution facilitates connection to the microscope converter by incorporating a threaded tube.

[0012] Furthermore, a rotating block is fixedly connected to the outer wall of the front end of the gear;

[0013] The above technical solution, by setting a rotating block, makes it easier to rotate the gear.

[0014] Furthermore, the gear meshes with the tooth groove;

[0015] The above technical solution allows the rotating tube to rotate by the meshing of gears and tooth grooves.

[0016] Furthermore, a second protective sleeve groove is provided at the lower end of the focusing tube body, and the first protective sleeve is provided at the lower end of the focusing tube body, and the first protective sleeve and the second protective sleeve groove are engaged in a snap-fit ​​relationship.

[0017] The above technical solution facilitates the fixing of the first protective sleeve by setting a second protective sleeve groove.

[0018] Furthermore, a first protective sleeve groove is provided at the upper end of the focusing tube body, and a second protective sleeve is provided at the upper end of the focusing tube body, with the second protective sleeve engaging with the first protective sleeve groove.

[0019] The above technical solution facilitates the fixing of the second protective sleeve by setting the first protective sleeve groove.

[0020] Furthermore, the limiting grooves are formed at the lower ends of both sides of the objective lens body, and the limiting rods slide inside the limiting grooves;

[0021] With the above technical solution, the objective lens can be rotated by the sliding of the limiting rods inside the limiting groove.

[0022] Furthermore, the limiting groove is formed at the upper ends of both sides of the objective lens body, and the limiting rod is fixedly connected to both sides of the middle part of the focusing tube inner wall, and the limiting rod slides inside the limiting groove;

[0023] With the above technical solution, the objective lens can be limited and moved by the sliding of the limiting rods inside the limiting groove.

[0024] This utility model has the following beneficial effects:

[0025] 1. The present invention proposes a microscope objective lens micro-adjustment focusing device. Compared with existing objective lens micro-adjustment focusing devices, this focusing device uses gears and tooth grooves to mesh, thereby driving a rotating tube. The rotating tube then drives a limiting rod. The limiting groove and the limiting rod cooperate, and the limiting slot and the limiting rod cooperate, thereby moving the objective lens up and down. Through the setting of the focusing mechanism, the slippage of the traditional focusing device can be effectively avoided, thus making it more accurate in daily use.

[0026] 2. The microscope objective lens micro-adjustment focusing device proposed in this utility model, compared with some existing objective lens micro-adjustment focusing devices, can effectively add a buffer function in case of accidental drop through the cooperation of outer tube, inner tube, spring and buffer ring. Then, through the setting of first protective sleeve and second protective sleeve, the edge of the focusing tube can be effectively protected. Through the setting of protective mechanism, the damage caused by accidental drop can be effectively reduced, and the precision damage of the device caused by impact can be reduced. Attached Figure Description

[0027] Figure 1 This is an isometric view of a microscope objective lens micro-adjustment focusing device proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of a microscope objective lens micro-adjustment focusing device proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the focusing tube in a microscope objective lens micro-motion focusing device proposed in this utility model;

[0030] Figure 4 This is a schematic diagram of the objective lens in a microscope objective lens micro-adjustment focusing device proposed in this utility model;

[0031] Figure 5 This is a schematic diagram of the focusing mechanism in a microscope objective lens micro-motion focusing device proposed in this utility model;

[0032] Figure 6 This is a schematic diagram of the protective mechanism in a microscope objective lens micro-adjustment focusing device proposed in this utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the first protective sleeve in a microscope objective lens micro-adjustment focusing device proposed in this utility model.

[0034] Legend:

[0035] 1. Protective mechanism; 101. Spring; 102. Inner tube; 103. Outer tube; 104. Buffer ring; 105. First protective sleeve; 106. Second protective sleeve; 107. First protective sleeve groove; 108. Second protective sleeve groove;

[0036] 2. Focusing tube;

[0037] 3. Focusing mechanism; 301. Limiting rod; 302. Rotating tube; 303. Rotating block; 304. Gear; 305. Limiting groove; 306. Limiting groove; 307. Limiting rod; 308. Rotating groove; 309. Gear groove;

[0038] 4. Objective lens; 5. Threaded tube. Detailed Implementation

[0039] 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.

[0040] Reference Figure 1 , Figure 2 and Figure 6 One embodiment provided by this utility model:

[0041] A microscope objective lens micro-adjustment focusing device includes a focusing tube 2, an objective lens 4 disposed inside the focusing tube 2, and a focusing mechanism 3 disposed at the lower end of the inner wall of the focusing tube 2. The focusing mechanism 3 includes a rotating groove 308 formed at the lower end of the inner wall of the focusing tube 2, a rotating tube 302 rotatably connected inside the rotating groove 308, and limiting rods 301 fixedly connected to both sides of the inner wall of the rotating tube 302. The rotating tube 302 has a toothed groove 309 formed in its body, and a gear 304 rotatably connected to the front end of the rotating groove 308. The focusing mechanism 3 also includes a limiting groove 305, a limiting groove 306, and a limiting rod 307.

[0042] The focusing tube 2 is provided with a protection mechanism 1. The protection mechanism 1 includes multiple outer tubes 103 fixedly connected to the body of the focusing tube 2. An inner tube 102 is slidably connected to the end of each outer tube 103 away from the focusing tube 2. A spring 101 is provided inside each outer tube 103. A buffer ring 104 is fixedly connected to the end of each inner tube 102 away from the outer tube 103. The protection mechanism 1 also includes a second protective sleeve 106 and a first protective sleeve 105.

[0043] The focusing device drives the rotating tube 302 by meshing the gear 304 with the tooth groove 309. The rotating tube 302 then drives the limiting rod 301. The limiting groove 306 cooperates with the limiting rod 301, and the limiting groove 305 cooperates with the limiting rod 307, thereby moving the objective lens 4 up and down. The focusing mechanism 3 can effectively avoid the slippage of traditional focusing devices, thus making it more accurate in daily use.

[0044] Reference Figure 3 A threaded tube 5 is fixedly connected to the upper surface of the focusing tube 2. By setting the threaded tube 5, it is easy to connect to the microscope converter.

[0045] Reference Figure 2 and Figure 5 A rotating block 303 is fixedly connected to the outer wall of the front end of the gear 304. By setting the rotating block 303, it is easier to rotate the gear 304. The gear 304 meshes with the tooth groove 309. Through the meshing of the gear 304 and the tooth groove 309, the rotating tube 302 can be rotated.

[0046] Reference Figure 1 , Figure 2 and Figure 7 The lower end of the focusing tube 2 is provided with a second protective sleeve groove 108, and a first protective sleeve 105 is provided at the lower end of the focusing tube 2. The first protective sleeve 105 is engaged with the second protective sleeve groove 108. The second protective sleeve groove 108 facilitates the fixation of the first protective sleeve 105. The upper end of the focusing tube 2 is provided with a first protective sleeve groove 107, and a second protective sleeve 106 is provided at the upper end of the focusing tube 2. The second protective sleeve 106 is engaged with the first protective sleeve groove 107. The first protective sleeve groove 107 facilitates the fixation of the second protective sleeve 106.

[0047] Reference Figure 2 and Figure 4The limiting groove 306 is provided at the lower ends of both sides of the objective lens 4. The limiting rods 301 slide inside the limiting groove 306. By sliding the limiting rods 301 inside the limiting groove 306, the objective lens 4 can be rotated. The limiting groove 305 is provided at the upper ends of both sides of the objective lens 4. The limiting rods 307 are fixedly connected to both sides of the middle part of the inner wall of the focusing tube 2. The limiting rods 307 slide inside the limiting groove 305. By sliding the limiting rods 307 inside the limiting groove 305, the objective lens 4 can be limited in movement.

[0048] Working principle: Before using the objective lens micro-adjustment focusing device, the threaded tube 5 needs to be connected to the microscope's converter. When the focus needs to be adjusted, the rotating block 303 is rotated, which drives the gear 304. The gear 304 then drives the meshing tooth groove 309, causing the rotating tube 302 to rotate. The rotating tube 302 then drives the limiting rod 301. Through the cooperation of the limiting rod 301 and the limiting groove 306, and the cooperation of the limiting rod 307 and the limiting groove 305, the objective lens 4 is moved up and down, thereby focusing the objective lens 4. In the event of an accidental drop, the inner tube 102, outer tube 103, spring 101, and buffer ring 104 work together to reduce the impact force when falling horizontally. The first protective sleeve 105 and the second protective sleeve 106 can protect the device from damage caused by impacts when it is dropped at an angle.

[0049] The following points should be noted in this article:

[0050] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0051] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A microscope objective lens micro-adjustment focusing device, comprising a focusing tube (2), characterized in that: The focusing tube (2) is provided with an objective lens (4) inside. The lower end of the inner wall of the focusing tube (2) is provided with a focusing mechanism (3). The focusing mechanism (3) includes a rotating groove (308) opened at the lower end of the inner wall of the focusing tube (2). A rotating tube (302) is rotatably connected inside the rotating groove (308). Limiting rods (301) are fixedly connected to both sides of the inner wall of the rotating tube (302). The body of the rotating tube (302) is provided with a toothed groove (309). A gear (304) is rotatably connected to the front end of the rotating groove (308). The focusing mechanism (3) also includes a limiting groove (305), a limiting groove (306), and a limiting rod (307). The focusing tube (2) is provided with a protective mechanism (1). The protective mechanism (1) includes multiple outer tubes (103) fixedly connected to the focusing tube (2). An inner tube (102) is slidably connected to the end of each outer tube (103) away from the focusing tube (2). A spring (101) is provided inside each outer tube (103). A buffer ring (104) is fixedly connected to the end of each inner tube (102) away from the outer tube (103). The protective mechanism (1) also includes a second protective sleeve (106) and a first protective sleeve (105).

2. The microscope objective lens micro-adjustment focusing device according to claim 1, characterized in that: A threaded tube (5) is fixedly connected to the upper surface of the focusing tube (2).

3. The microscope objective lens micro-adjustment focusing device according to claim 1, characterized in that: A rotating block (303) is fixedly connected to the outer wall of the front end of the gear (304).

4. The microscope objective lens micro-adjustment focusing device according to claim 1, characterized in that: The gear (304) meshes with the tooth groove (309).

5. The microscope objective lens micro-adjustment focusing device according to claim 1, characterized in that: The lower end of the focusing tube (2) is provided with a second protective sleeve groove (108), and the first protective sleeve (105) is provided at the lower end of the focusing tube (2). The first protective sleeve (105) and the second protective sleeve groove (108) are engaged.

6. The microscope objective lens micro-adjustment focusing device according to claim 1, characterized in that: The upper end of the focusing tube (2) is provided with a first protective sleeve groove (107), and the second protective sleeve (106) is provided at the upper end of the focusing tube (2). The second protective sleeve (106) is engaged with the first protective sleeve groove (107).

7. The microscope objective lens micro-adjustment focusing device according to claim 1, characterized in that: The limiting groove (306) is located at the lower ends of both sides of the objective lens (4), and the limiting rods (301) slide inside the limiting groove (306).

8. The microscope objective lens micro-adjustment focusing device according to claim 1, characterized in that: The limiting groove (305) is opened at the upper end of both sides of the objective lens (4), and the limiting rod (307) is fixedly connected to both sides of the middle part of the inner wall of the focusing tube (2). The limiting rod (307) slides inside the limiting groove (305).

Images