Device for adjusting incidence direction of illumination light of optical microscope

Abstract

The utility model discloses a device for adjusting the incident direction of illumination light of an optical microscope, which comprises an aperture diaphragm with an eccentrically arranged light hole and a base connected to the microscope, and the base is in sliding connection with a rotating support used for installing the aperture diaphragm and driving the aperture diaphragm to rotate; the base is provided with a light hole for transmitting incident light of the aperture diaphragm; the base is provided with a light hole for transmitting incident light of the aperture diaphragm; two rotating supports are connected to the base in a sliding manner; a rotating angle mark is arranged on the surface of the rotating support. The device is simple in structure and can flexibly adjust the incidence direction of illumination light.

Description

Technical Field

[0001] This utility model relates to microscopes, and more particularly to a device for adjusting the incident direction of illumination light in an optical microscope. Background Technology

[0002] In optical microscopes, illuminating a sample from different angles can create various three-dimensional effects. Current technology achieves this by removing an off-center aperture stop from the mounting base, rotating it, and then reinstalling it. However, this method is complex and cumbersome, and its adjustability is too limited, failing to allow for flexible adjustment of the illumination light's direction. While adding an external light source with a rotatable support allows for flexible adjustment, it complicates the microscope's overall structure, increasing costs and making it inconvenient to reuse the external light source and rotatable support on other microscopes. Therefore, a simpler device capable of flexibly adjusting the illumination light's direction is needed. Summary of the Invention

[0003] Purpose of the utility model: The purpose of this utility model is to provide a device for adjusting the incident direction of illumination light in an optical microscope, which is simple in structure and can flexibly adjust the incident direction of illumination light.

[0004] Technical solution: The device for adjusting the incident direction of illumination light in an optical microscope according to the present invention includes an aperture stop with an eccentrically set light-transmitting aperture, a base connected to the microscope, and a rotating support slidably connected to the base for mounting the aperture stop and driving it to rotate; the base is provided with a light-transmitting aperture for transmitting incident light through the aperture stop.

[0005] Because the aperture diaphragm's aperture is eccentrically positioned, and it's mounted on a rotating support that allows it to rotate, the position of the aperture changes, thus altering the direction of light incidence. Furthermore, the rotating support is slidably connected to the base, meaning it can also slide, further adjusting the aperture diaphragm's aperture position. This combination of sliding and rotation allows for flexible adjustment of the illumination light's direction, resulting in various three-dimensional effects on the sample. The entire device is also simple in construction, easy to assemble and disassemble, and applicable to different microscopes, making it widely suitable.

[0006] Preferably, a frosted diffuser is provided on each side of the aperture stop for diffusing light.

[0007] While placing an aperture stop off-center in front of a collimating light source can produce a three-dimensional effect, it results in very uneven lighting. However, by placing frosted diffusers on both sides of the aperture stop, the lighting becomes more uniform by diffusing the light, which can significantly improve the uniformity of illumination while maintaining the original three-dimensional effect.

[0008] Preferably, two rotating supports are slidably connected to the base.

[0009] The system features two rotating supports, each with a different aperture stop, making aperture stop switching more convenient and eliminating the need for disassembly and reassembly each time. Alternatively, an aperture stop can be installed in only one rotating support, while the support without the aperture stop can function as a regular light-transmitting hole, allowing light to directly enter the subsequent optical path. The two rotating supports can be flexibly switched according to actual needs.

[0010] Preferably, the diameter of the light-transmitting hole in the base is greater than or equal to the diameter of the aperture stop.

[0011] The diameter of the light-transmitting hole in the base is greater than or equal to the diameter of the aperture stop to ensure that the incident light from the aperture stop can enter the subsequent optical path without obstruction.

[0012] Preferably, the base and the skateboard are provided with matching limiting devices for limiting the sliding distance of the skateboard.

[0013] Setting a limit device can prevent the skateboard from falling off the base.

[0014] Preferably, the surface of the rotating support is marked with a rotation angle.

[0015] Setting a rotation angle indicator allows for more precise control of the rotation angle.

[0016] Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are as follows: by installing the aperture stop on a rotating support that can drive it to rotate, and the rotating support is slidably connected to the base, the incident direction of the illumination light can be flexibly adjusted; the overall structure of the device is simple, easy to disassemble and assemble for use on multiple microscopes, and has wide applicability. Attached Figure Description

[0017] Figure 1 This is a front view of the device;

[0018] Figure 2 This is a top view of the device;

[0019] Figure 3 This is a rear view of the device;

[0020] Figure 4 This is a three-dimensional structural diagram of the device;

[0021] Figure 5 This is a schematic diagram of the aperture stop and the frosted diffuser structure. Detailed Implementation

[0022] As shown in the figure, the device for adjusting the incident direction of the illumination light of an optical microscope according to the present invention includes an aperture stop 1 with an eccentrically set light transmission hole, a base 2 connected to the microscope, and a rotating support 3 slidably connected to the base 2 for mounting the aperture stop 1 and driving it to rotate; the base 2 is provided with a light transmission hole for transmitting the incident light of the aperture stop 1.

[0023] The aperture stop 1 can be provided with a frosted diffuser 4 on each side for diffusing light, or it can be provided without a frosted diffuser 4 or only on one side. Providing two frosted diffusers can make the light more uniform. When the frosted diffusers 4 are provided on both sides, they are installed together with the aperture stop 1 on the rotating support 3.

[0024] The base 2 has threaded holes at its four corners, allowing it to be screwed onto the microscope for easy assembly and disassembly. The base 2 has a sliding groove in which a sliding plate 5 is slidably connected. A rotating support 3 is rotatably connected to the sliding plate 5. Matching limiting devices are provided on the base 2 and the sliding plate 5 to restrict the sliding distance of the sliding plate 5 and prevent it from falling off. These limiting devices can be matching protrusions at both ends of the sliding groove and one end of the sliding plate 5, or other conventional limiting devices found in the prior art. The sliding direction of the sliding plate 5 is perpendicular to the main optical axis of the microscope. The base 2 has a light-transmitting hole for transmitting incident light from the aperture stop 1, the diameter of which is larger than the diameter of the aperture stop 1. The sliding plate 5 also has a through hole matching the rotating support 3 for transmitting incident light from the aperture stop 1.

[0025] The rotating support 3 is a ring with a rotation angle mark on its surface. When only the aperture stop 1 is set, it is placed in the mounting frame of the rotating support 3 by means of a retaining ring and fixed by means of a retaining ring. When frosted diffuser sheets are set on both sides of the aperture stop 1, the aperture stop 1 is sandwiched between two frosted diffuser sheets 4, placed in the mounting frame of the rotating support 3 and fixed by means of a retaining ring.

[0026] Two rotating supports 3 can be arranged side by side, one with an aperture stop 1 and the other without, or the two with aperture stops 1 of different specifications.

Claims

1. A device for adjusting the incident orientation of illumination light in an optical microscope, comprising an aperture stop (1) eccentrically positioned at the light-transmitting aperture, characterized in that: Includes a base (2) connected to the microscope, on which a rotating support (3) is slidably connected for mounting the aperture stop (1) and driving it to rotate; the base (2) is provided with a light-transmitting hole for transmitting incident light through the aperture stop (1).

2. The device for adjusting the incident direction of illumination light in an optical microscope according to claim 1, characterized in that: Each side of the aperture stop (1) is provided with a frosted diffuser (4) for diffusing light.

3. The device for adjusting the incident direction of illumination light in an optical microscope according to claim 1, characterized in that: Two rotating supports (3) are slidably connected to the base (2).

4. The device for adjusting the incident direction of illumination light in an optical microscope according to claim 1, characterized in that: The diameter of the light-transmitting hole of the base (2) is greater than or equal to the diameter of the aperture stop (1).

5. The device for adjusting the incident direction of illumination light in an optical microscope according to claim 1, characterized in that: A sliding plate (5) is slidably connected to the base (2), and a rotating support (3) is set on the sliding plate (5).

6. The device for adjusting the incident direction of illumination light in an optical microscope according to claim 4, characterized in that: The base (2) and the slide plate (5) are provided with matching limiting devices for limiting the sliding distance of the slide plate (5).

7. The device for adjusting the incident direction of illumination light in an optical microscope according to claim 1, characterized in that: The rotating support (3) has a rotation angle mark on its surface.

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