Diaphragm assembly and diaphragm adjusting device

Abstract

The utility model provides a diaphragm assembly and a diaphragm adjusting device. The diaphragm assembly comprises a diaphragm and N destressing grooves. Wherein N is a natural number greater than or equal to 1; the lower surface of the diaphragm comprises a light transmission surface, and a light transmission hole is formed in the light transmission surface; the destressing grooves are arranged around the light passing surface. According to the utility model, the diaphragm mounting seat is set to be a stainless steel or ceramic diaphragm mounting seat, so that the diaphragm not only can play a role in extinction, but also can prevent the diaphragm from being extruded and adjusted by a ball head jackscrew to cause the falling of a diaphragm oxide layer, the exposure of aluminum skimmings and the pollution to optical machine equipment. And the destressing grooves are formed in the periphery of the light passing surface, so that the influence of external mounting force on the shape of the light passing hole of the diaphragm can be further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of optical equipment, in particular to a diaphragm assembly and diaphragm adjusting device. BACKGROUND

[0002] The diaphragm is applied to the light path and has the functions of limiting the beam aperture and the field size. The center of some super-small aperture diaphragms has a diameter of only tens of microns to hundreds of microns, and it is difficult to accurately drop the beam focus point on the center of the diaphragm aperture. Moreover, due to the influence of machining and assembly errors, the actual beam focus point position is often not at the center of the diaphragm aperture, so it is necessary to use an adjusting mechanism to adjust the eccentricity of the position of the diaphragm and the beam focus point. However, the installation space of some optical equipment in the prior art is relatively compact, so it is necessary to customize the design of the adjusting mechanism. The current part of the adjusting mechanism can realize the concentric alignment of the diaphragm and the beam focus point, and can adapt to the installation space of the optical equipment. However, in order to absorb stray light, the diaphragm mounting seat is usually made of aluminum alloy material as the base, and the surface is blackened by anodic oxidation. The diaphragm mounting seat is adjusted radially by a stainless steel ball head top screw. When the diaphragm mounting seat is adjusted and extruded, the oxidation layer of the diaphragm mounting seat is easily abraded and falls off, and aluminum is leaked. The pollutants caused by the surface damage of such equipment can pose a great threat to the optical machine, which may cause the ability of the equipment to eliminate stray light to decrease, and the falling off of the oxidation layer or the leakage of aluminum may also pollute the equipment, so the product is also easily polluted. At the same time, during the installation process, the external installation force is easy to change the shape of the light transmission hole of the diaphragm, causing the deformation of the light transmission hole, so that the diaphragm light transmission hole and the focus beam cannot be concentrically centered. Moreover, after the micron-level adjustment of the position of the diaphragm is completed, the diaphragm is easily displaced when it is locked, so that the adjusted state of the diaphragm changes, and it needs to be adjusted again, causing the waste of manpower and time cost.

[0003] Therefore, it is necessary to improve the diaphragm adjusting device to further reduce the probability of pollution of the test equipment and deformation of the light transmission hole of the diaphragm during the installation of the diaphragm and the diaphragm mounting seat.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical scheme of the utility model, and for the convenience of understanding by those skilled in the art. The above technical scheme cannot be considered as known by those skilled in the art only because it is described in the background section of the utility model. CONTENT OF THE UTILITY MODEL

[0005] In view of the above prior art defects, the utility model discloses a diaphragm adjusting device and test system for solving the problem that the diaphragm mounting seat is easily abraded and causes the oxidation layer to fall off and leak aluminum when being adjusted and extruded in the prior art, the oxidation layer falling off or leaking aluminum can pollute the equipment, and the external installation force can easily change the shape of the light transmission hole of the diaphragm, causing the light transmission hole to be deformed, so that the diaphragm light transmission hole and the focal point beam cannot be concentrically centered, and the problem that the diaphragm mounting seat will be displaced when being locked.

[0006] To achieve the above object and other related objects, the utility model provides a diaphragm assembly and diaphragm adjusting device, the diaphragm assembly includes: diaphragm and N stress relief groove, wherein, N is the natural number greater than or equal to 1;

[0007] The lower surface of the diaphragm includes a light transmission surface, and the light transmission surface is provided with a light transmission hole, and each stress relief groove is arranged around the periphery of the light transmission surface.

[0008] Optionally, when N is equal to 1, the stress relief groove is arranged as an annular stress relief groove, and the annular stress relief groove is coaxially arranged with the light transmission hole.

[0009] Optionally, the diaphragm assembly further includes a diaphragm mounting seat and a fixing member, the upper surface of the diaphragm mounting seat is provided with a first recess, the lower surface is provided with a first through hole, and the first through hole penetrates the first recess, the diameter of the first through hole is smaller than the diameter of the first recess, and the diaphragm is fixed in the first recess by the fixing member.

[0010] Optionally, the height of the stress relief groove is set to 1mm-1.5mm.

[0011] Optionally, the diameter of the light transmission hole is set to 10-300.

[0012] Optionally, the fixing member is arranged as a screw or an adhesive.

[0013] Optionally, the diaphragm mounting seat is arranged as a stainless steel diaphragm mounting seat or an alumina ceramic diaphragm mounting seat.

[0014] The utility model also provides a diaphragm adjusting device, the diaphragm adjusting device includes: support, at least 3 fasteners and above-mentioned diaphragm assembly.

[0015] The upper surface of the bracket is provided with a second groove, and the diameter of the second groove is greater than the outer diameter of the lower surface of the diaphragm mounting seat, and the diaphragm assembly is arranged in the second groove; the lower surface of the bracket is provided with a second through hole, and the diameter of the second through hole is smaller than the diameter of the bottom of the diaphragm mounting seat; the centers of the second through hole, the first through hole and the light transmission hole are on the same straight line; at least three through holes are uniformly arranged on the side wall of the second groove, and each fastener passes through each through hole to control the displacement of the diaphragm mounting seat.

[0016] Optionally, the diaphragm adjusting device further comprises a dovetail part, and the dovetail part is fixedly arranged on the lower surface of the bracket, and the second through hole further penetrates the dovetail part.

[0017] Optionally, the fastener is a ball head top pin.

[0018] As described above, the utility model provides a diaphragm assembly and a diaphragm adjusting device, which have the following beneficial effects:

[0019] The diaphragm assembly and the diaphragm adjusting device, wherein the diaphragm adjusting device comprises a bracket, at least three fasteners and a diaphragm assembly, can effectively reduce the probability that the light transmission hole of the diaphragm is deformed and the equipment is polluted when the diaphragm and the diaphragm mounting seat are installed. The bracket and the dovetail part are integrally arranged, so that the external mounting port of the diaphragm adjusting device is a dovetail structure, which is convenient for being inserted into the light machine interface to realize rapid positioning, installation and disassembly. Meanwhile, the diaphragm mounting seat is arranged as a stainless steel mounting seat or a ceramic diaphragm mounting seat, so that the diaphragm can not only play the extinction effect, but also can avoid that the oxidation layer of the diaphragm is peeled off, aluminum scraps are exposed and the light machine equipment is polluted due to the extrusion adjustment of the ball head top pin on the diaphragm mounting seat. In addition, the stress relief grooves are uniformly arranged around the light transmission surface, which can further reduce the influence of the external installation force on the shape of the light transmission hole of the diaphragm and reduce the probability of deformation of the light transmission hole. Meanwhile, the diaphragm adjusting device is compact and simple, and only three ball head top pins are used to realize the radial adjustment and locking of the diaphragm, which can effectively avoid that the diaphragm is displaced, the adjustment state is changed and the labor and time cost is further reduced after the diaphragm adjustment of the micron level is completed. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A front view of the diaphragm assembly of the utility model is shown.

[0021] Figure 2 A front view of the diaphragm of the utility model is shown.

[0022] Figure 3 A structural schematic view of the diaphragm adjusting device of the utility model is shown.

[0023] Figure 4An exploded view of the diaphragm adjusting device of the present application is shown.

[0024] Figure 5 A front view of the diaphragm adjusting device of the present application is shown.

[0025] Element number explanation

[0026] 1 Diaphragm assembly

[0027] 10 Diaphragm

[0028] D1 Diameter of diaphragm

[0029] 11 Stress relief groove

[0030] H1 Height of stress relief groove

[0031] 12 Light passing hole

[0032] D2 Diameter of light passing hole

[0033] 13 Diaphragm mounting seat

[0034] D3 Outer diameter of lower surface of diaphragm mounting seat

[0035] 130 First groove

[0036] D4 Diameter of first groove

[0037] 131 First through hole

[0038] D5 Diameter of first through hole

[0039] 2 Diaphragm adjusting device

[0040] 20 Bracket

[0041] 200 Second groove

[0042] D6 Diameter of second groove

[0043] 200a Through hole

[0044] 201 Second through hole

[0045] D7 Diameter of second through hole

[0046] 21 Fastener

[0047] 22 Dove tail DETAILED DESCRIPTION

[0048] The implementation of the present application will be described by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present specification.

[0049] Please refer toFigures 1 to 5 It should be understood that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the implementation of the utility model, and therefore do not have technical significance. Any change in the decoration, proportion relationship or size adjustment does not affect the effect and purpose of the utility model, and should still fall within the scope of the disclosed technology. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model, and the change or adjustment of the relative relationship is also considered as the scope of the utility model.

[0050] As shown in Figure 1 , the present embodiment provides a diaphragm assembly 1, comprising: a diaphragm 10 and a stress relief groove 11.

[0051] As shown in Figure 2 , the lower surface of the diaphragm 10 includes a light passing surface, and the light passing surface is provided with a light passing hole 12; each stress relief groove 11 is arranged around the periphery of the light passing surface.

[0052] Specifically, in the present embodiment, the diameter D2 of the light passing hole 12 is set to 10-300 μm, such as 29 μm, 48 μm, 60 μm, 100 μm, 130 μm, 250 μm, and in actual use, the diameter of the light passing hole can be set arbitrarily according to the needs, which is not described here. The diameter of the light passing surface is greater than the diameter D2 of the light passing hole 12 and less than the diameter D1 of the diaphragm 10. The diaphragm 10 is set as an aluminum alloy diaphragm, which can be oxidized and blackened to eliminate stray light, reduce aberration and distortion, and improve the imaging quality of the optical system, and is also easy to process. In actual use, the material of the diaphragm that can be oxidized and blackened and is easy to process can be set arbitrarily according to the needs, which is not limited to the present embodiment.

[0053] More specifically, in the present embodiment, and the height H1 of the stress relief groove 11 is set to 1mm-1.5mm, such as 1.1mm, 1.2mm, 1.31mm, 1.42mm, in actual use, the height of the stress relief groove can be set according to the needs, here is not one by one. As an example, when N is equal to 1, the stress relief groove 11 is set to a ring-shaped stress relief groove, and the ring-shaped stress relief groove is coaxially arranged with the through hole 12 to reduce the influence of external mounting force on the shape of the through hole 12, and further reduce the probability of deformation of the through hole 12. As an example two, when N is greater than 1, each stress relief groove 11 is uniformly arranged around the through light surface, so as to reduce the influence of external mounting force on the shape of the through hole 12, and avoid the deformation of the through hole 12. In actual use, the number of stress relief grooves can be set arbitrarily according to the needs, here is not one by one.

[0054] As shown in Figure 1 The diaphragm assembly 1 further comprises a diaphragm mounting seat 13 and a fixing member; the upper surface of the diaphragm mounting seat 13 is provided with a first recess 130, and the lower surface is provided with a first through hole 131, and the first through hole 131 penetrates the first recess 130, and the diameter D5 of the first through hole 131 is smaller than the diameter D4 of the first recess 130; the diaphragm 10 is fixed in the first recess 130 by the fixing member.

[0055] Specifically, in this embodiment, the aperture mount 13 is configured as a conical aperture mount, i.e., the side surface of the aperture mount 13 is a tapered surface, for mounting the aperture 10. In actual use, the shape of the aperture mount can be arbitrarily set as needed and is not described in detail here. The aperture mount 13 can be configured as a stainless steel aperture mount or an alumina ceramic aperture mount. During the installation of the aperture, even if squeezed, debris will not fall, thus preventing contamination of the optical machine. In actual use, the material of the aperture mount can be arbitrarily set as needed and is not described in detail here. A first groove 130 is provided on the upper surface of the aperture mount 13 to facilitate mounting the aperture 10. The shape of the first groove 130 is configured as a circular first groove, i.e., the shape of the first groove 130 corresponds to the shape of the aperture 10. In actual use, the shape of the first groove can be configured to correspond to the shape of the aperture and is not limited to this embodiment. The lower surface of the aperture mount 13 is provided with a first through-hole 131, which extends through the first groove 130. The diameter D5 of the first through-hole 131 is smaller than the diameter D4 of the first groove 130. The first groove 130 and the first through-hole 131 are arranged coaxially to prevent the aperture 10 from passing through the lower surface of the aperture mount 13 and falling outside. In actual use, the diameters of the first through-hole and the first groove can be adjusted accordingly, and are not described in detail here. The fixing member is configured as a screw or adhesive to securely connect the aperture 10 to the aperture mount 13 to prevent deformation of the aperture 10 during installation. In actual use, any method of securing the aperture to the aperture mount that can prevent deformation during installation is suitable for the present invention and is not described in detail here.

[0056] The present invention also provides an aperture adjustment device 2 for adjusting and fixing the aperture mounting seat 13. Figure 3 and Figure 4 As shown, the aperture adjustment device 2 includes: a bracket 20, at least three fasteners 21 and an aperture assembly 1.

[0057] like Figure 5 As shown, a second groove 200 is provided on the upper surface of the bracket 20, and the diameter D6 of the second groove 200 is larger than the outer diameter D3 of the lower surface of the aperture mounting seat 13, and the aperture assembly 1 is arranged in the second groove 200; a second through hole 201 is provided on the lower surface of the bracket 20, and the diameter D7 of the second through hole 201 is smaller than the diameter D3 of the bottom of the aperture mounting seat 13, and the centers of the second through hole 201, the first through hole 131 and the light hole 12 are on the same straight line.

[0058] Specifically, in the embodiment, the diameter D6 of the second groove 200 is greater than the outer diameter D3 of the bottom of the diaphragm mount 13, so as to facilitate the arrangement of the diaphragm mount 13 in the second groove 200, and make the diaphragm mount 13 have sufficient free adjustment space in the second groove 200. The lower surface of the bracket 20 is provided with the second through hole 201, and the diameter D7 of the second through hole 201 is less than the diameter D3 of the bottom of the diaphragm mount 13, which not only ensures that the light beam can pass through smoothly, but also avoids the situation that the diameter D7 of the second through hole 201 is greater than the diameter D3 of the lower surface of the diaphragm mount 13, so that the diaphragm mount 13 falls out from the second through hole, and further reduces the probability of installation failure.

[0059] More specifically, in the embodiment, the diaphragm adjusting device 2 further comprises a dovetail piece 22, which is arranged on the lower surface of the bracket 20, and the second through hole 211 also penetrates the dovetail piece 22. That is, the dovetail piece 22 is arranged integrally with the bracket 20, and the dovetail piece 22 is symmetrically arranged based on the longitudinal center line of the diaphragm adjusting device 22. The dovetail piece 22 is arranged as an external mounting interface of the entire diaphragm adjusting device 2, so as to further quickly mount the diaphragm adjusting device 2 to the optical engine interface through the dovetail piece 22, and use a screw to press against the two side slopes of the dovetail piece 22 to fix the entire diaphragm adjusting device 2. That is, the arrangement of the dovetail piece 22 can realize the quick mounting and dismounting of the diaphragm adjusting device 2. In actual use, any structure that can realize the quick mounting and dismounting of the diaphragm adjusting device is suitable for the utility model, and the embodiment is not limited.

[0060] As shown in Figure 3 The side wall of the second groove 200 is uniformly provided with at least three through holes 200a, and each fastener 21 passes through each through hole 200a to control the displacement of the diaphragm mount 13.

[0061] Specifically, in the embodiment, three through holes 200a are evenly arranged on the side wall of the second groove 200, and three fasteners 21 pass through the through holes 200a to control the displacement of the diaphragm mounting seat 13, the top end of each fastener 21 is in contact with the diaphragm mounting seat 13, that is, the top end of each fastener 21 is in contact with the conical surface of the diaphragm mounting seat 13, and the diaphragm mounting seat 13 is fixed. In actual use, the number of through holes and fasteners can be set as required, and details are not described here. The fastener 13 is provided as a ball head top pin, the pitch of the ball head top pin is 0.25 mm, and the top pin feeding amount of the ball head top pin is about 3 microns per 5 degrees of rotation. That is, the ball head end of the three ball head top pins is in contact with the conical surface of the diaphragm mounting seat 13, and the radial displacement of the diaphragm mounting seat 13 is controlled by rotating the three ball head top pins in or out to apply radial limiting and axial pressure to the diaphragm mounting seat 13. Adjusting the radial displacement of the diaphragm mounting seat 13 is equivalent to adjusting the radial displacement of the diaphragm 10, thereby controlling the radial displacement of the center of the light passing hole of the diaphragm, so that when the light passing amount of the light beam passing through the light passing hole is the largest, the concentric centering of the light passing hole 12 of the diaphragm 10 and the focal point light beam is completed. At this time, continue to adjust the compression degree of the ball head top pin to the diaphragm mounting seat 13, and the three ball head top pins iteratively extrude the conical surface to complete the fixation and locking of the diaphragm mounting seat 13, that is, the diaphragm mounting seat 13 is compressed at the bottom of the second groove 200 of the support. In actual use, any structure that can fix the diaphragm mounting seat and adjust the radial displacement thereof is suitable for the utility model, and the embodiment is not limited.

[0062] In summary, the utility model provides a kind of diaphragm assembly and diaphragm adjusting device, diaphragm assembly includes: diaphragm and N stress relief groove;Wherein, N is natural number greater than or equal to 1;The lower surface of diaphragm includes light passing surface, and light passing hole is arranged on light passing surface;Each stress relief groove is arranged around the periphery of light passing surface.The diaphragm adjusting device of the utility model can effectively reduce the probability of deformation of the light passing hole of the diaphragm and pollution of equipment when installing the diaphragm and the diaphragm mounting seat.The support and dovetail piece are integrally arranged, so that the external mounting port of the diaphragm adjusting device is dovetail structure, which is convenient to insert into the optical machine interface to realize quick positioning and disassembly.The diaphragm mounting seat is made of stainless steel or ceramic hard wear-resistant material, so that the diaphragm can not only play the extinction effect, but also avoid the oxidation layer of the diaphragm from falling off due to the extrusion adjustment of the ball head top pin, exposing aluminum chips and causing pollution to the optical machine equipment.The stress relief groove is arranged around the periphery of the light passing surface, which can further reduce the influence of external installation force on the shape of the light passing hole of the diaphragm.Therefore, the utility model effectively overcomes the shortcomings of the prior art and has high industrial utilization value.

[0063] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A diaphragm assembly, characterized by, The diaphragm assembly comprises a diaphragm and N stress relief grooves, wherein N is a natural number greater than or equal to 1. The lower surface of the diaphragm comprises a light transmission surface, and the light transmission surface is provided with a light transmission hole; each stress relief groove is arranged around the periphery of the light transmission surface.

2. The aperture assembly of claim 1, wherein: When N is equal to 1, the stress relief groove is arranged as an annular stress relief groove, and the annular stress relief groove is coaxially arranged with the light transmission hole.

3. The aperture assembly of claim 1, wherein: The diaphragm assembly further comprises a diaphragm mounting seat and a fixing member; the upper surface of the diaphragm mounting seat is provided with a first recess, the lower surface is provided with a first through hole, and the first through hole penetrates the first recess, the diameter of the first through hole is smaller than the diameter of the first recess; the diaphragm is fixed in the first recess by the fixing member.

4. The aperture assembly of claim 1 or 2, wherein: The height of the stress relief groove is set to 1mm-1.5mm.

5. The aperture assembly of claim 1 or 2, wherein: The diameter of the light transmission hole is set to 10μm-300μm.

6. The aperture assembly of claim 3, wherein: The fixing member is arranged as a screw or an adhesive.

7. The aperture assembly of claim 3, wherein: The diaphragm mounting seat is arranged as a stainless steel diaphragm mounting seat or an alumina ceramic diaphragm mounting seat.

8. An aperture adjustment device, characterized by The diaphragm adjusting device comprises a bracket, at least three fastening members and the diaphragm assembly according to any one of claims 3, 6-7. The upper surface of the bracket is provided with a second recess, and the diameter of the second recess is greater than the outer diameter of the bottom of the diaphragm mounting seat, the diaphragm assembly is arranged in the second recess; the lower surface of the bracket is provided with a second through hole, and the diameter of the second through hole is smaller than the diameter of the lower surface of the diaphragm mounting seat; the centers of the second through hole, the first through hole and the light transmission hole are on the same straight line; at least three through holes are uniformly arranged on the side wall of the second recess, and each fastening member passes through each through hole to control the displacement of the diaphragm mounting seat.

9. The aperture adjustment device of claim 8, wherein: The diaphragm adjusting device further comprises a dovetail member, the dovetail member is fixedly arranged on the lower surface of the bracket, and the second through hole further penetrates the dovetail member.

10. The aperture adjustment device of claim 8, wherein: The fastening member is arranged as a ball head top pin.

Images