A lens switching device

Abstract

This utility model relates to the technical field of microscopes, and more particularly to an objective lens switching device, including a turntable, a fixed base, an adjusting block, and an adjusting ring. The turntable is rotatably mounted on the fixed base, and the turntable has several mounting positions. Several adjusting rings are correspondingly arranged with each mounting position, and the adjusting rings are movably mounted in the mounting positions to support the objective lenses. Several adjusting slots are arranged around the mounting positions on the turntable, and each adjusting slot has an adjusting block. The adjusting block can move along the axial direction of the mounting position. The adjusting ring has an adjusting inclined surface arranged around its circumference, and the adjusting inclined surface is set at an angle to the axial direction of the adjusting ring. The adjusting block can abut against the adjusting inclined surface to push the adjusting ring. By setting the movable adjusting ring in the mounting position of the turntable, and by the abutting between the adjusting block and the adjusting inclined surface on the adjusting ring, the adjusting ring is pushed to move in the mounting position to finely adjust the position of the adjusting ring and the objective lens mounted on the adjusting ring.

Description

Technical Field

[0001] This utility model relates to the technical field of microscopes, and in particular to an objective lens switching device. Background Technology

[0002] In modern microscopy, the efficiency and accuracy of the objective lens changing system are crucial for improving research and testing efficiency. Traditional manual objective lens changing is not only time-consuming and labor-intensive, but can also cause unnecessary physical damage to delicate optical components, affecting image quality. Therefore, electric objective lens rotation devices have emerged, which use a motor to achieve rapid and smooth objective lens switching, significantly improving operational convenience and work efficiency.

[0003] Currently, existing electro-optical objective lens rotation devices include a turntable for mounting objectives, a base, and a stepper motor. The stepper motor is vertically mounted in the base and is connected to the turntable via a transmission, thereby driving the turntable to rotate relative to the base, which in turn drives the objective lens to rotate so that different objectives are rotated to the bottom of the eyepiece, thus enabling objective lens switching.

[0004] However, existing objective lens switching and rotating devices do not have adjustment functions. Due to manufacturing errors and radial runout, different objectives are on different axes after switching. This will cause the detection position of the object to change after switching objectives, thus making it impossible to maintain the consistency of detection and increasing the detection error. Utility Model Content

[0005] The purpose of this invention is to provide an objective lens switching device to solve the technical problem in the prior art where the detection position changes after objective lens switching due to processing errors and radial runout, thus increasing the detection error.

[0006] This utility model provides an objective lens switching device, including a turntable, a fixed base, an adjusting block, and an adjusting ring;

[0007] The turntable is rotatably mounted on the fixed base. The turntable is provided with a plurality of mounting positions. A plurality of adjusting rings are provided in correspondence with each mounting position. The adjusting rings are movably mounted on the mounting positions and are used to support the objective lens.

[0008] A plurality of adjustment slots are arranged around the mounting position on the turntable, and an adjustment block is provided in each adjustment slot. The adjustment block can move along the axial direction of the mounting position. An adjustment inclined surface is arranged around the adjustment ring in its circumference. The adjustment inclined surface is set at an angle to the axial direction of the adjustment ring. The adjustment block can abut against the adjustment inclined surface to push the adjustment ring.

[0009] Furthermore, the adjusting block has an abutting inclined surface on the side near the adjusting ring, the abutting inclined surface is arranged parallel to the adjusting inclined surface, and the abutting inclined surface abuts against the adjusting inclined surface.

[0010] Furthermore, the objective lens switching device also includes an adjusting bolt, a threaded hole at the bottom of the adjusting groove, a through hole along the direction of the adjusting groove on the adjusting block, and the adjusting bolt passing through the through hole and threadedly connected to the threaded hole.

[0011] Furthermore, the objective lens switching device also includes a drive motor, which is fixed to the mounting base. A connecting cylinder is provided at the center of the turntable, and the connecting cylinder is sleeved on the drive motor and connected to the drive motor so that the drive motor can drive the turntable to rotate around the connecting cylinder. A plurality of mounting positions are arranged around the connecting cylinder.

[0012] Furthermore, the drive motor is configured as a direct drive motor, and the connecting sleeve bolt is connected to the drive end of the drive motor.

[0013] Furthermore, the objective lens switching device also includes a shielding disc, which is disposed between the fixed base and the turntable. The shielding disc has a through hole, which is coaxially arranged with the mounting position. The shielding disc is connected to the turntable.

[0014] Compared with the prior art, the present invention provides an objective lens switching device, including a turntable, a fixed base, an adjusting block, and an adjusting ring. The turntable is rotatably mounted on the fixed base, and the turntable is provided with several mounting positions. Several adjusting rings are correspondingly arranged with each mounting position, and the adjusting rings are movably mounted in the mounting positions to support the objective lenses. Several adjusting slots are arranged around the mounting positions on the turntable, and each adjusting slot is provided with an adjusting block. The adjusting block can move along the axial direction of the mounting position. The adjusting ring is provided with an adjusting inclined surface around its circumference, and the adjusting inclined surface is set at an angle to the axial direction of the adjusting ring. The adjusting block can abut against the adjusting inclined surface to push the adjusting ring. By setting a movable adjusting ring in the mounting position of the turntable, and by the abutting of the adjusting block against the adjusting inclined surface on the adjusting ring, the adjusting ring is pushed to move in the mounting position, so as to finely adjust the position of the adjusting ring and the objective lens set on the adjusting ring. This solves the technical problem in the prior art that the detection position changes after objective lens switching due to processing errors and radial runout, which increases the detection error. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the objective lens switching device provided in an embodiment of the present invention;

[0017] Figure 2 An exploded view of the overall structure of the objective lens switching device provided in this embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the turntable in the objective lens switching device provided in this embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the adjustment ring in the objective lens switching device provided in this embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the adjusting block and adjusting bolt in the objective lens switching device provided in the embodiment of this utility model.

[0021] Figure label:

[0022] 100. Turntable; 110. Mounting position; 120. Adjustment slot; 130. Connecting cylinder;

[0023] 200. Fixture;

[0024] 300. Adjustment block; 310. Abutment slope;

[0025] 400. Adjusting ring; 410. Adjusting ramp;

[0026] 500. Adjusting bolts;

[0027] 600. Drive motor;

[0028] 700, Covering the disc. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] like Figures 1-5As shown, this embodiment of the present invention provides an objective lens switching device, including a turntable 100, a fixed base 200, an adjusting block 300, and an adjusting ring 400. The turntable 100 is rotatably disposed on the fixed base 200. The turntable 100 is provided with a plurality of mounting positions 110. A plurality of adjusting rings 400 are provided in a one-to-one correspondence with the mounting positions 110. The adjusting rings 400 are movably disposed in the mounting positions 110 and are used to support the objective lens. A plurality of adjusting slots 120 are disposed around the mounting positions 110 on the turntable 100. Each adjusting slot 120 is provided with an adjusting block 300. The adjusting block 300 can move along the axial direction of the mounting position 110. The adjusting ring 400 is provided with an adjusting inclined surface 410 around its circumference. The adjusting inclined surface 410 is set at an angle to the axial direction of the adjusting ring 400. The adjusting block 300 can abut against the adjusting inclined surface 410 to push the adjusting ring 400.

[0037] That is, the objective lens switching device provided by this utility model, by setting a movable adjustment ring 400 in the mounting position 110 of the turntable 100, and by the abutment of the adjustment block 300 against the adjustment inclined surface 410 on the adjustment ring 400, pushes the adjustment ring 400 to move in the mounting position 110, so as to finely adjust the position of the adjustment ring 400 and the objective lens set on the adjustment ring 400, thereby solving the technical problem in the prior art that the detection position changes after objective lens switching due to processing errors and radial runout, which increases the detection error.

[0038] Specifically, the fixed base 200 is cylindrical, and the turntable 100 is disc-shaped; both are coaxially arranged and rotate coaxially. The turntable 100 has a through-hole, which serves as the mounting position 110. In this embodiment, three mounting positions 110 are provided, arranged in a circular array on the turntable 100. Each mounting position 110 has an annular groove around its circumference, and the adjusting ring 400 is mounted on this groove. The horizontal cross-section of the adjusting groove 120 is U-shaped. In this embodiment, three adjusting grooves 120 are provided, surrounding the mounting positions 110 and communicating with the annular grooves. The adjusting ring 400 has an adjusting inclined surface 410 around its circumference, which is set at a 45-degree angle to the horizontal direction. The bottom of the adjustment slot 120 is provided with a threaded hole, and the adjustment block 300 is provided with a through hole along the direction of the adjustment slot 120. The adjustment bolt 500 passes through the through hole and is threadedly connected to the threaded hole. By turning the adjustment bolt 500, the adjustment block 300 is pressed downward, which in turn causes the adjustment block 300 to push the adjustment ring 400 along the adjustment slope 410, thereby adjusting the position of the adjustment ring 400 relative to the adjustment mounting position 110. Thus, by adjusting the position of the adjustment block 300 on the three adjustment slots 120, the position of the adjustment ring 400 can be adjusted, achieving fine adjustment of the objective lens position.

[0039] Furthermore, the adjusting block 300 is provided with an abutting inclined surface 310 on the side near the adjusting ring 400. The abutting inclined surface 310 is arranged parallel to the adjusting inclined surface 410 and abuts against the adjusting inclined surface 410.

[0040] Specifically, the adjusting block 300 is provided with an abutting inclined surface 310 on the side near the adjusting ring 400. The abutting inclined surface 310 is also set at a 45° angle with the horizontal direction. Thus, the abutting inclined surface 310 can abut against the adjusting inclined surface 410, thereby pushing the adjusting ring 400 more smoothly.

[0041] Furthermore, the objective lens switching device also includes a drive motor 600, which is fixed to the mounting base 200. A connecting cylinder 130 is provided at the center of the turntable 100. The connecting cylinder 130 is sleeved on the drive motor 600 and connected to the drive motor 600 so that the drive motor 600 can drive the turntable 100 to rotate around the connecting cylinder 130. Several mounting positions 110 are arranged around the connecting cylinder 130.

[0042] Specifically, the drive motor 600 is bolted to the center of the fixed base 200, and its rotation center coincides with the axis of the fixed base 200. The connecting cylinder 130 is cylindrical and hollow, so that it can be fitted onto the drive motor 600. The connecting cylinder 130 is located at the center of the turntable 100, and three mounting positions 110 are arranged around the connecting cylinder 130. The connecting cylinder 130 can be keyed to the drive motor 600, or it can be connected to the drive motor 600 with other connecting parts, so that the drive motor 600 can drive the turntable 100 to rotate around the connecting cylinder 130.

[0043] Furthermore, the drive motor 600 is configured as a direct drive motor, and the connecting cylinder 130 is bolted to the drive end of the drive motor 600.

[0044] Specifically, the drive motor 600 is configured as a direct drive motor, and the connecting cylinder 130 is bolted to the drive end of the drive motor 600, so that the drive end of the drive motor 600 can directly drive the connecting cylinder 130 to rotate, eliminating the transmission structure, reducing assembly difficulty and increasing transmission speed. At the same time, the direct drive motor has a high-precision encoder inside, which can greatly improve the transmission accuracy.

[0045] Furthermore, the objective lens switching device also includes a shielding disc 700, which is disposed between the fixed base 200 and the turntable 100. The shielding disc 700 is provided with a through hole, which is coaxially arranged with the mounting position 110. The shielding disc 700 is connected to the turntable 100.

[0046] Specifically, the light-shielding disc 700 is disc-shaped and has a circular through hole. The through hole is coaxial with the mounting position 110, and the light-shielding disc 700 is connected to the bottom of the turntable 100 by bolts or slots. The light-shielding disc 700 is positioned between the fixed base 200 and the turntable 100 to block external light from entering the fixed base 200 and causing interference.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An objective lens switching device characterized by comprising: It includes a turntable (100), a fixed base (200), an adjusting block (300), and an adjusting ring (400); The turntable (100) is rotatably mounted on the fixed base (200). The turntable (100) is provided with a plurality of mounting positions (110). A plurality of adjusting rings (400) are provided in correspondence with the mounting positions (110). The adjusting rings (400) are movably mounted on the mounting positions (110). The adjusting rings (400) are used to carry the objective lens. A plurality of adjustment slots (120) are arranged around the mounting position (110) on the turntable (100). Each adjustment slot (120) is provided with an adjustment block (300). The adjustment block (300) can move along the axial direction of the mounting position (110). An adjustment inclined surface (410) is arranged around the circumference of the adjustment ring (400). The adjustment inclined surface (410) is set at an angle to the axial direction of the adjustment ring (400). The adjustment block (300) can abut against the adjustment inclined surface (410) to push the adjustment ring (400).

2. The objective lens switching device according to claim 1, wherein The adjusting block (300) has an abutting inclined surface (310) on the side close to the adjusting ring (400). The abutting inclined surface (310) is arranged parallel to the adjusting inclined surface (410) and abuts against the adjusting inclined surface (410).

3. The objective lens switching device according to claim 2, wherein The objective lens switching device also includes an adjusting bolt (500), the bottom of the adjusting groove (120) is provided with a threaded hole, the adjusting block (300) is provided with a through hole along the direction of the adjusting groove (120), and the adjusting bolt (500) passes through the through hole and is threadedly connected to the threaded hole.

4. The objective switching device according to any one of claims 1 to 3, characterized in that The objective lens switching device also includes a drive motor (600), which is fixed to the mounting base (200). A connecting cylinder (130) is provided at the center of the turntable (100). The connecting cylinder (130) is sleeved on the drive motor (600) and connected to the drive motor (600) so that the drive motor (600) can drive the turntable (100) to rotate around the connecting cylinder (130). A plurality of mounting positions (110) are arranged around the connecting cylinder (130).

5. The objective lens switching device according to claim 4, wherein The drive motor (600) is configured as a direct drive motor, and the connecting cylinder (130) is bolted to the drive end of the drive motor (600).

6. The objective switching device according to any one of claims 1 to 3, characterized in that The objective lens switching device also includes a shielding disc (700), which is disposed between the fixed base (200) and the turntable (100). The shielding disc (700) has a through hole, which is coaxially disposed with the mounting position (110). The shielding disc (700) is connected to the turntable (100).

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