CN219417867U - Diaphragm and optical device with same - Google Patents

Abstract

The utility model discloses a diaphragm and an optical device with the diaphragm. The diaphragm comprises: the mounting plate is provided with a main through hole; the cover plate is fixed on the mounting plate, a secondary through hole is formed in the cover plate, and the secondary through hole is at least partially aligned with the main through hole in a first direction so as to form a light passing area for light to pass through the secondary through hole and the main through hole along the first direction; the adjusting component is arranged in the alignment area of the auxiliary through hole and the main through hole and is used for adjusting the position and the light passing area of the light passing area. According to the diaphragm provided by the utility model, the adjusting component is arranged in the alignment area of the auxiliary through hole and the main through hole, so that the light passing area of the light passing area can be adjusted, and the position of the light passing area can be adjusted.

Description

Diaphragm and optical device with same

Technical Field

The utility model relates to the technical field of optical devices, in particular to a diaphragm and an optical device with the diaphragm.

Background

Diaphragms are optical elements in an optical train that act to limit the light beam, such as fixed or variable apertured barriers, lenses, etc. In the prior art, a light passing area is arranged on a diaphragm, and the aperture of the light passing area and the position of the light passing area on some diaphragms are fixed; the aperture of the light passing area on some diaphragms can be changed, but the position of the light passing area is not changed; the position of the light passing area on some diaphragms can be changed, but the aperture of the light passing area is fixed. Therefore, in the process of using the diaphragm, there is a problem of inconvenient operation.

Disclosure of Invention

The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the utility model provides the diaphragm which not only can adjust the area of the light passing area, but also can adjust the position of the light passing area.

The utility model also provides an optical device with the diaphragm.

According to an embodiment of the present utility model, an aperture includes: the mounting plate is provided with a main through hole; the cover plate is fixed on the mounting plate, a secondary through hole is formed in the cover plate, and the secondary through hole is at least partially aligned with the main through hole in a first direction so as to form a light passing area for light to pass through the secondary through hole and the main through hole along the first direction; the adjusting component is arranged in the alignment area of the auxiliary through hole and the main through hole and is used for adjusting the position and the light passing area of the light passing area.

According to the diaphragm provided by the embodiment of the utility model, the adjusting component is arranged in the alignment area of the auxiliary through hole and the main through hole, so that the light passing area of the light passing area can be adjusted, and the position of the light passing area can be adjusted.

According to some embodiments of the utility model, the cover plate comprises a first cover plate and a second cover plate, the first cover plate is fixed on one side of the mounting plate, the second cover plate is fixed on one side of the mounting plate, which is away from the first cover plate, the auxiliary through hole comprises a first auxiliary through hole formed on the first cover plate and a second auxiliary through hole formed on the second cover plate, the adjusting assembly comprises a first adjusting assembly and a second adjusting assembly, the first adjusting assembly is arranged between the first cover plate and the mounting plate, and the second adjusting assembly is arranged between the second cover plate and the mounting plate.

According to some embodiments of the utility model, a first accommodating cavity is formed between the first cover plate and the mounting plate, and a part of the first adjusting component extends into the first accommodating cavity; a second accommodating cavity is formed between the second cover plate and the mounting plate, and a part of the second adjusting component stretches into the second accommodating cavity; the main through hole is communicated with the first accommodating cavity and the second accommodating cavity.

According to some embodiments of the utility model, the first adjusting component and the second adjusting component each comprise a plurality of adjusting rods, each adjusting rod is provided with an adjusting block, the adjusting rods are used for adjusting the positions of the corresponding adjusting blocks in the alignment area so as to change the positions and the light passing areas of the light passing areas, and one end of each adjusting rod extends out of the cover plate.

According to some embodiments of the utility model, the first adjusting assembly and the second adjusting assembly each comprise a first adjusting rod and a second adjusting rod which are parallel to each other, a first adjusting block is arranged on the first adjusting rod, a second adjusting block is arranged on the second adjusting rod, the first adjusting block is in threaded connection with the first adjusting rod so as to drive the first adjusting block to move along the first adjusting rod when the first adjusting rod rotates, and the second adjusting block is in threaded connection with the second adjusting rod so as to drive the second adjusting block to move along the second adjusting rod when the second adjusting rod rotates.

According to some embodiments of the utility model, the adjustment bars of the first adjustment assembly are arranged crosswise to the adjustment bars of the second adjustment assembly.

According to some embodiments of the utility model, the first adjustment bar of each of the first and second adjustment assemblies further passes through the second adjustment block, and the second adjustment bar further passes through the first adjustment block.

According to some embodiments of the utility model, the adjusting rod of the first adjusting assembly is supported between the first cover plate and the mounting plate through a first bearing, and the adjusting rod of the second adjusting assembly is supported between the second cover plate and the mounting plate through a second bearing.

According to some embodiments of the utility model, an end of the adjusting rod extending out of the cover plate is provided with an adjusting knob, and the adjusting knob is provided with an anti-slip area or an external connecting part for connecting an external driving device.

An optical device according to another embodiment of the present utility model includes the diaphragm described above.

The optical device can adjust the position and the light passing area of the diaphragm.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic view of a mounting plate for a diaphragm according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a first cover plate of a diaphragm according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a second cover plate of the diaphragm according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a first adjustment assembly in a diaphragm according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a second adjustment assembly in a diaphragm according to an embodiment of the present utility model;

fig. 6 is a schematic view of a diaphragm according to an embodiment of the utility model.

Reference numerals:

diaphragm 100, mounting plate 10, main through hole 11, first cover plate 20, first sub-through hole 21, first receiving chamber 22, first bearing 23, first bearing chamber 24, second cover plate 30, second sub-through hole 31, bolt hole 32, light passing area 33, second receiving chamber 34, second bearing 35, second bearing chamber 36, first adjusting component 40, first component first adjusting lever 41, first component second adjusting lever 42, first component first adjusting block 43, first component second adjusting block 44, first component first knob 45, first component second knob 46, second adjusting component 50, second component first adjusting lever 51, second component second adjusting lever 52, second component first adjusting block 53, second component second adjusting block 54, second component first knob 55, second component second knob 56.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

An aperture stop 100 according to an embodiment of the utility model is described in detail below in connection with fig. 1-6.

Referring to fig. 1-6, an aperture 100 according to an embodiment of the present utility model may include a mounting plate 10, a cover plate, and an adjustment assembly. Wherein, the mounting plate 10 is provided with a main through hole 11, and light can pass through the main through hole 11. The cover plate is fixed to the mounting plate 10, and optionally, the cover plate and the mounting plate 10 are fixed by one or more of fastening, welding, bonding and clamping. As shown in fig. 1-3, corresponding bolt holes 32 are provided in both the cover plate and the mounting plate 10, and the cover plate is secured to the mounting plate 10 by bolts. The cover plate is provided with a secondary through hole which is at least partially aligned with the primary through hole 11 in a first direction for forming a light passing region 33 for light passing through the secondary through hole and the primary through hole 11 in the first direction. Alternatively, the first direction is a direction perpendicular to the large surface of the cover plate, and the main through hole 11 and the auxiliary through hole may be partially aligned or fully aligned in the first direction, and the area of the main through hole 11 and the auxiliary through hole through which light can pass is the light passing area 33, and the light passes through the light passing area 33. In other words, the projection of the main via 11 in the first direction at least partially coincides with the sub via, and the light passing area of the light passing area 33 is not larger than the area of the overlapping area.

The adjusting component is disposed in the alignment area between the auxiliary through hole and the main through hole 11, and the adjusting component is used for adjusting the position and the light passing area of the light passing area 33. The position and the area of incidence of light rays can be changed by adjusting the position and the light passing area of the light passing area 33, the function of the diaphragm 100 is increased, and the convenience of using the diaphragm 100 is improved.

According to the diaphragm 100 of the embodiment of the present utility model, the adjustment member is disposed in the alignment area of the sub-through hole and the main through hole 11, and not only the light passing area of the light passing area 33 but also the position of the light passing area 33 can be adjusted.

In some embodiments of the present utility model, as shown with reference to fig. 1, 2-3 and 6, the cover plate includes a first cover plate 20 and a second cover plate 30, the first cover plate 20 being fixed to one side of the mounting plate 10, the second cover plate 30 being fixed to the side of the mounting plate 10 facing away from the first cover plate 20. Alternatively, as shown in fig. 6, the first cover plate 20 is located on the upper side of the mounting plate 10, and the second cover plate 30 is located on the lower side of the mounting plate 10. The sub through holes include a first sub through hole 21 formed on the first cap plate 20 and a second sub through hole 31 formed on the second cap plate 30, and alternatively, the first sub through hole 21, the second sub through hole 31, and the main through hole 11 are partially aligned or all aligned in the first direction. The adjustment assembly includes a first adjustment assembly 40 and a second adjustment assembly 50, the first adjustment assembly 40 being disposed between the first cover plate 20 and the mounting plate 10, and the second adjustment assembly 50 being disposed between the second cover plate 30 and the mounting plate 10. Alternatively, the light passing area 33 is an overlapping area of the first auxiliary through hole 21, the main through hole 11 and the second auxiliary through hole 31 in the first direction, the first adjusting component 40 is used for adjusting the position and the area of the light passing area 33 in the alignment area of the first auxiliary through hole 21 and the main through hole 11, and the second adjusting component 50 is used for adjusting the position and the area of the light passing area 33 in the alignment area of the second auxiliary through hole 31 and the main through hole 11. In some embodiments, as shown in fig. 1-2, the first secondary through hole 21, the primary through hole 11, and the second secondary through hole 31 are square holes of the same size.

In some embodiments of the present utility model, referring to fig. 2, a first accommodating cavity 22 is formed between the first cover plate 20 and the mounting plate 10, a portion of the first adjusting assembly 40 extends into the first accommodating cavity 22, and the first adjusting assembly 40 is operable to adjust the position and area of the light passing area 33 in the first accommodating cavity 22. A second accommodating cavity 34 is formed between the second cover plate 30 and the mounting plate 10, a part of the second adjusting component 50 extends into the second accommodating cavity 34, and the second adjusting component 50 is used for adjusting the position and the area of the light passing area 33 in the second accommodating cavity 34. The main through hole 11 communicates the first accommodation chamber 22 and the second accommodation chamber 34. Alternatively, the first accommodation chamber 22 surrounds the first sub-through hole 21, the second accommodation chamber 34 surrounds the second sub-through hole 31, the first accommodation chamber 22 is located above the main through hole 11, and the second accommodation chamber 34 is located below the main through hole 11.

In some embodiments of the present utility model, referring to fig. 4 and 5, the first adjusting assembly 40 and the second adjusting assembly 50 each include a plurality of adjusting rods, each of which is provided with an adjusting block, the adjusting rods are used for adjusting the positions of the corresponding adjusting blocks in the alignment area to change the positions and the light passing areas of the light passing areas 33, and one ends of the adjusting rods extend out of the cover plate, so that an operator can conveniently operate the adjusting rods.

In some embodiments of the present utility model, referring to fig. 4 and 5, the first and second adjusting assemblies 40 and 50 each include a first adjusting lever and a second adjusting lever parallel to each other, the first adjusting lever having a first adjusting block thereon, the second adjusting lever having a second adjusting block thereon, the first adjusting block being screw-coupled with the first adjusting lever to drive the first adjusting block to move along the first adjusting lever when the first adjusting lever rotates, the second adjusting block being screw-coupled with the second adjusting lever to drive the second adjusting block to move along the second adjusting lever when the second adjusting lever rotates. In a specific embodiment, the axial positions of the first adjusting rod and the second adjusting rod are unchanged, only rotation occurs, the first adjusting rod drives the first adjusting block to move when rotating, and the second adjusting rod drives the second adjusting block to move when rotating.

Alternatively, referring to fig. 4 and 5, the first adjusting assembly 40 includes a first assembly first adjusting rod 41, a first assembly second adjusting rod 42, a first assembly first adjusting block 43, and a first assembly second adjusting block 44, where the first assembly first adjusting rod 41 and the first assembly second adjusting rod 42 are parallel to each other, the first assembly first adjusting block 43 is screwed with the first assembly first adjusting rod 41, the first assembly first adjusting rod 41 is rotated to drive the first assembly first adjusting block 43 to move along the first assembly first adjusting rod 41, the first assembly second adjusting block 44 is screwed with the first assembly second adjusting rod 42, the first assembly second adjusting block 44 is rotated to drive the first assembly second adjusting block 44 to move along the first assembly second adjusting rod 42, and the moving directions of the first assembly first adjusting block 43 and the first assembly second adjusting block 44 may be the same or opposite.

Likewise, the second adjusting assembly 50 includes a second assembly first adjusting rod 51, a second assembly second adjusting rod 52, a second assembly first adjusting block 53, and a second assembly second adjusting block 54, where rotating the second assembly first adjusting rod 51 drives the second assembly first adjusting block 53 to move along the second assembly first adjusting rod 51, rotating the second assembly second adjusting rod 52 drives the second assembly second adjusting block 54 to move along the second assembly second adjusting rod 52, and the movement directions of the second assembly first adjusting block 53 and the second assembly second adjusting block 54 may be the same or opposite.

By adjusting the positions of the first and second adjustment blocks, the position and the light passing area of the light passing area 33 can be adjusted.

There are various situations in which the positions of the first and second adjustment blocks are adjusted, for example, the following 4 situations: in the first case, the first component first adjusting block 43, the first component second adjusting block 44, the second component first adjusting block 53, and the second component second adjusting block 54 enclose the light passing region 33; second case: the first component first regulating block 43 and the first component second regulating block 44 participate in enclosing the light passing area 33, and the second component first regulating block 53 and the second component second regulating block 54 are regulated outside the overlapping area and do not participate in enclosing the light passing area 33; third case: the second component first adjusting block 53 and the second component second adjusting block 54 participate in enclosing the light passing area 33, and the first component first adjusting block 43 and the first component second adjusting block 44 are adjusted to be outside the overlapping area and do not participate in enclosing the light passing area 33; fourth case: the first component first adjusting block 43, the first component second adjusting block 44, the second component first adjusting block 53 and the second component second adjusting block 54 are all located outside the overlapping area and do not participate in enclosing the light passing area 33, and at this time, the light passing area 33 is an overlapping area of the first auxiliary through hole 21, the main through hole 11 and the second auxiliary through hole 31. For other cases, this may be achieved by adjusting the positions of the first assembly first adjustment block 43, the first assembly second adjustment block 44, the second assembly first adjustment block 53, and the second assembly second adjustment block 54, which are not further illustrated herein.

In some embodiments of the present utility model, as shown with reference to fig. 4 and 5, the adjustment bars of the first adjustment assembly 40 are arranged crosswise to the adjustment bars of the second adjustment assembly 50. In this way, the adjustment processes of the first adjusting component 40 and the second adjusting component 50 do not interfere, the space layout is reasonable, and the position and the light passing area of the light passing area 33 can be adjusted from multiple directions. Alternatively, referring to fig. 4 and 5, the adjusting lever of the first adjusting assembly 40 is arranged vertically to the adjusting lever of the second adjusting assembly 50, and the adjusting block of the first adjusting assembly 40 is arranged vertically to the adjusting block of the second adjusting assembly 50, so that the position and the light passing area of the light passing area 33 can be adjusted from four directions by the first assembly first adjusting block 43, the first assembly second adjusting block 44, the second assembly first adjusting block 53, and the second assembly second adjusting block 54.

In some embodiments of the present utility model, referring to fig. 4 and 5, the first adjusting rod of each of the first adjusting assembly 40 and the second adjusting assembly 50 is further provided with a second adjusting block in a penetrating manner, and the second adjusting rod is further provided with a first adjusting block in a penetrating manner, so that the first adjusting block and the second adjusting block are conveniently guided, and deflection of the first adjusting block and the second adjusting block in the moving process is prevented, so that the adjustment is more accurate. Optionally, one end of the first adjusting block is provided with a threaded hole, the other end of the first adjusting block is provided with a light hole, one end of the first adjusting block is in threaded connection with the first adjusting rod, and the other end of the first adjusting block is sleeved on the second adjusting rod; one end of the second adjusting block is provided with a threaded hole, the other end of the second adjusting block is provided with a unthreaded hole, one end of the second adjusting block is in threaded connection with the second adjusting rod, and the other end of the second adjusting block is sleeved on the first adjusting rod.

In some embodiments of the present utility model, referring to fig. 1-5, the adjustment rod of the first adjustment assembly 40 is supported between the first cover plate 20 and the mounting plate 10 through the first bearing 23, and the adjustment rod of the second adjustment assembly 50 is supported between the second cover plate 30 and the mounting plate 10 through the second bearing 35. Optionally, two first bearing cavities 24 are provided on the opposite surfaces of the first cover plate 20 and the mounting plate 10, the first bearing cavities 24 are communicated with the first accommodating cavity 22, two second bearing cavities 36 are provided on the opposite surface of the second cover plate 30 and the mounting plate 10, and the second bearing cavities 36 are communicated with the second accommodating cavity 34. The first bearing 23 is arranged in the first bearing cavity 24, and an adjusting rod of the first adjusting assembly 40 penetrates through the first bearing 23 and is rotationally connected with the mounting plate 10; the second bearing 35 is disposed in the second bearing cavity 36, and the adjusting rod of the second adjusting assembly 50 is disposed through the second bearing 35 and is rotatably connected to the mounting plate 10. The first bearing 23 and the second bearing 35 have the functions of supporting the adjusting lever, reducing the friction coefficient and improving the rotation precision of the adjusting lever.

In some embodiments of the present utility model, as shown with reference to fig. 4 to 6, an adjusting knob is provided at one end of the adjusting lever extending out of the cover plate, and an anti-slip area or an external connection part for connecting to an external driving device is provided on the adjusting knob. Optionally, an anti-slip area is arranged on the adjusting knob, so that a user can conveniently rotate the adjusting knob manually. The adjusting knob can be provided with an external connecting part for connecting an external driving device, for example, threads can be arranged, the adjusting knob is in butt joint with an external transmission mechanism, and the rotation of the adjusting valve is controlled through intelligent software, so that the automatic regulation and control of the size and the position of the light passing area 33 are realized. As shown in fig. 4 to 5, each adjusting rod is provided with an adjusting knob, which is a first assembly first knob 45, a first assembly second knob 46, a second assembly first knob 55 and a second assembly second knob 56, respectively, wherein the first assembly first knob 45 is arranged at one end of the first assembly first adjusting rod 41 extending out of the cover plate, the first assembly second knob 46 is arranged at one end of the first assembly second adjusting rod 42 extending out of the cover plate, the second assembly first knob 55 is arranged at one end of the second assembly first adjusting rod 51 extending out of the cover plate, and the second assembly second knob 56 is arranged at one end of the second assembly second adjusting rod 52 extending out of the cover plate.

An optical device according to another embodiment of the present utility model includes the diaphragm 100 described above. Alternatively, the optical device may be a microscope or a camera or the like.

The optics can adjust the position and the light-passing area of the light-passing area 33. When the optical device is used, the light source irradiates from one side of the diaphragm 100 and exits from the other side of the diaphragm 100 through the light passing region 33. By adjusting the position and the light passing area of the light passing area 33, different light demands can be satisfied.

Alternatively, the optical device may be a microscope, a camera, or the like.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. A diaphragm, comprising:

the mounting plate (10), the said mounting plate (10) has main through hole (11);

the cover plate is fixed on the mounting plate (10), and is provided with a secondary through hole which is at least partially aligned with the main through hole (11) in a first direction and is used for forming a light passing area (33) for light to pass through the secondary through hole and the main through hole (11) along the first direction;

the adjusting component is arranged in the alignment area of the auxiliary through hole and the main through hole (11) and is used for adjusting the position and the light passing area of the light passing area (33).

2. The diaphragm according to claim 1, characterized in that the cover plate comprises a first cover plate (20) and a second cover plate (30), the first cover plate (20) is fixed on one side of the mounting plate (10), the second cover plate (30) is fixed on one side of the mounting plate (10) facing away from the first cover plate (20), the secondary through holes comprise a first secondary through hole (21) formed in the first cover plate (20) and a second secondary through hole (31) formed in the second cover plate (30), the adjusting assembly comprises a first adjusting assembly (40) and a second adjusting assembly (50), the first adjusting assembly (40) is arranged between the first cover plate (20) and the mounting plate (10), and the second adjusting assembly (50) is arranged between the second cover plate (30) and the mounting plate (10).

3. The diaphragm according to claim 2, characterized in that a first accommodation chamber (22) is formed between the first cover plate (20) and the mounting plate (10), a portion of the first adjustment assembly (40) protruding into the first accommodation chamber (22);

a second accommodating cavity (34) is formed between the second cover plate (30) and the mounting plate (10), and a part of the second adjusting component (50) extends into the second accommodating cavity (34);

the main through hole (11) is communicated with the first accommodating cavity (22) and the second accommodating cavity (34).

4. A diaphragm (100) according to claim 2 or 3, wherein the first adjustment assembly (40) and the second adjustment assembly (50) each comprise a plurality of adjustment bars, each of which is provided with an adjustment block for adjusting the position of the corresponding adjustment block in the alignment area to change the position and the light passing area of the light passing area (33), one end of the adjustment bar protruding outside the cover plate.

5. The diaphragm of claim 4, wherein the first adjustment assembly (40) and the second adjustment assembly (50) each comprise a first adjustment rod and a second adjustment rod that are parallel to each other, the first adjustment rod is provided with a first adjustment block, the second adjustment rod is provided with a second adjustment block, the first adjustment block is in threaded connection with the first adjustment rod so as to drive the first adjustment block to move along the first adjustment rod when the first adjustment rod rotates, and the second adjustment block is in threaded connection with the second adjustment rod so as to drive the second adjustment block to move along the second adjustment rod when the second adjustment rod rotates.

6. The diaphragm according to claim 5, characterized in that the adjustment rod of the first adjustment assembly (40) is arranged crosswise to the adjustment rod of the second adjustment assembly (50).

7. The diaphragm of claim 5, wherein the first adjustment rod of each of the first (40) and second (50) adjustment assemblies further passes through the second adjustment block, the second adjustment rod further passing through the first adjustment block.

8. The diaphragm of claim 4, characterized in that the adjustment rod of the first adjustment assembly (40) is supported between the first cover plate (20) and the mounting plate (10) by a first bearing (23), and the adjustment rod of the second adjustment assembly (50) is supported between the second cover plate (30) and the mounting plate (10) by a second bearing (35).

9. The diaphragm of claim 4, wherein an end of the adjusting rod extending out of the cover plate is provided with an adjusting knob, and the adjusting knob is provided with an anti-slip area or an external connection part for connecting an external driving device.

10. An optical device comprising the diaphragm of any one of claims 1-9.