Aperture adjusting device

Abstract

An aperture adjusting device disclosed by the present invention comprises a base, a blade assembly, a rotating member and a cover plate, the base, the blade assembly, the rotating member and the cover plate are stacked in sequence, the base, the rotating assembly and the cover plate are provided with through light through holes, the cover plate is pressed on the base, the rotating member is connected with the cover plate, and the rotating member is connected with the cover plate. The gap between the rotating piece and the base is larger than the thickness of the blade assembly. The rotating part traditionally pressed on the blade assembly is hoisted on the cover plate, pressure of the rotating part on the blade assembly is eliminated, friction force of the blade assembly is reduced, sliding resistance is small, movement of the blade assembly is facilitated, and the service life of the blade assembly is prolonged. The fastening structure is simple, the coaxiality between the cover plate and the rotating piece can be ensured through the stand column structure, and the consistency of the light through holes is good.

Description

Technical Field

[0001] This invention relates to the field of microscope equipment technology, and more specifically to an aperture adjustment device. Background Technology

[0002] Aperture adjustment devices, also known as aperture stops, are common components in optical systems. Currently, conventional aperture adjustment devices include both manual and automatic adjustments. The size of the light-gathering aperture is changed by moving a blade assembly. With technological advancements and changing application scenarios, the structure of aperture adjustment devices has evolved into various styles and structures. However, for most aperture adjustment devices, especially in the field of microscopy, the blade assembly is mostly assembled by pressing a rotating component into the base and then securing it with a cover plate. The drawback of this structure is that the weight of the rotating component presses down on the blade assembly, causing additional pressure and accelerated wear. Furthermore, this additional pressure also hinders the movement of the blade assembly, increasing sliding resistance and negatively impacting the expansion or contraction of the blade assembly. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this invention discloses an aperture adjustment device that reduces blade assembly friction and improves the smoothness of blade assembly movement.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: An aperture adjustment device includes a base, a blade assembly, a rotating component, and a cover plate. The base, blade assembly, rotating component, and cover plate are stacked sequentially, and the base, rotating component, and cover plate are provided with through-holes for light transmission. The cover plate is pressed on the base, and the rotating component is connected to the cover plate. The gap between the rotating component and the base is greater than the thickness of the blade assembly.

[0005] Preferably, the rotating component is fastened to the cover plate.

[0006] As a specific measure, the rotating component is provided with columns evenly distributed around the light-transmitting hole, and the columns are provided with latches, and the edge of the light-transmitting hole of the cover plate is fastened to the latches.

[0007] The aperture adjustment device provided by the present invention has the following beneficial effects: 1. The present invention suspends the rotating component that is traditionally pressed on the blade assembly onto the cover plate, eliminating the pressure of the rotating component on the blade assembly, reducing the friction of the blade assembly, reducing sliding resistance, facilitating the movement of the blade assembly and improving its service life.

[0008] 2. The fastening structure is simple and the column structure can ensure the coaxiality between the cover plate and the rotating parts, and the consistency of the light-transmitting holes is good. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0010] Figure 1 This is a schematic diagram of the aperture adjustment device of the present invention; Figure 2 This is an exploded view of the aperture adjustment device of the present invention; Detailed Implementation

[0011] Reference will now be made in detail to embodiments of this disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of this disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of this disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made within the teachings of this disclosure without departing from the scope or spirit of this disclosure. For example, a feature shown or described as part of one embodiment may be used in conjunction with another embodiment to produce yet another embodiment. It is intended that this disclosure cover such modifications and variations that fall within the scope of the appended claims and their equivalents. Other objects, features, and aspects of this disclosure are disclosed or apparent from the following detailed description. It is to be understood by those skilled in the art that this discussion is merely a description of exemplary embodiments and is not intended to limit the broader aspects of this disclosure.

[0012] like Figures 1-2 As shown, in the embodiment of the aperture adjustment device of the present invention, the aperture adjustment adopts an automatic adjustment method. Therefore, a motor 7 and an electronic control system 8 are configured. The rotating part 3 is provided with a gear part 3.1. The motor 7 drives the rotating part 3 to rotate by cooperating with the driving gear. The position of the rotating part 3 is monitored by a sensor. The rotating part 3 drives the blade assembly 2 to realize the change of the light transmission aperture. This is the prior art and will not be described in detail here.

[0013] An embodiment of the aperture adjustment device of the present invention includes a base 1, a blade assembly 2, a rotating component 3, and a cover plate 4. Each blade in the blade assembly 2 is provided with a guide post 2.1. The base 1 has a receiving space for accommodating the blade assembly 2 and the rotating component 3. The base 1 has a base plate 1.1, on which a guide groove 1.2 for the blade assembly 2 is provided. The rotating component 3 has a mounting hole 3.2 for mounting the guide post 2.1. The two ends of the guide post 2.1 respectively cooperate with the guide groove 1.2 and the mounting hole 3.1. In this way, the blade assembly 2 is installed between the base 1 and the rotating component 2 via the guide post 2.1. Then, the cover plate 4 is pressed onto the base 1 and connected to it, so that the base 1, blade assembly 2, rotating component 3, and cover plate 4 are stacked in sequence. In this embodiment, the cover plate 4 is connected to the base 1 by bolts, which is convenient to operate and low in cost. The rotation of the rotating component 3 drives the blade assembly 2 to move, thereby changing the diameter of the through hole.

[0014] In this embodiment, similar to the prior art, the base 1, the rotating component 3, and the cover plate 4 are provided with through-holes for light transmission, and the variable light transmission aperture realized by the blade assembly 2 is also coaxial with the light transmission aperture.

[0015] In this embodiment of the invention, the rotating component 3 is connected to the cover plate 4, and the rotating component 3 is suspended, which greatly reduces the contact between the rotating component 3 and the blade assembly 2. The friction is naturally reduced or decreased, the sliding resistance of the blade assembly during the movement is reduced, the wear is reduced, and the service life is improved. Moreover, it is required that the gap between the rotating component 3 and the base 1 is greater than the thickness of the blade assembly 2, so that the blade assembly 2 has a larger space, thereby achieving the purpose of reducing wear.

[0016] In another embodiment of the present invention, the rotating component 3 is fastened to the cover plate 4. Fastening is a common technique, and in this embodiment, it can reduce implementation and production costs, making it a preferred solution. Other methods, such as bolts or welding, can also achieve the purpose of hoisting the rotating component 3 and the cover plate 4.

[0017] In a beneficial embodiment of the present invention, the rotating component 3 is provided with columns 5 evenly distributed along the circumference of the light-transmitting hole, and the columns 5 are provided with latches 6. The edge of the light-transmitting hole of the cover plate 4 is fastened to the latches 6. The columns 5 provide space for the latches 6 to fasten to the cover plate 4, and the columns 5 themselves form a limiting function to ensure the coaxiality of the light-transmitting hole after the cover plate 4 and the rotating component 3 are assembled.

Claims

1. An aperture adjustment device, comprising a base (1), a blade assembly (2), a rotating component (3), and a cover plate (4), wherein the base (1), blade assembly (2), rotating component (3), and cover plate (4) are stacked sequentially, and the base (1), rotating component (3), and cover plate (4) are provided with through-holes for light transmission, and the cover plate (4) presses against the base (1), characterized in that: The rotating component (3) is connected to the cover plate (4), and the gap between the rotating component (3) and the base (1) is greater than the thickness of the blade assembly (2).

2. The aperture adjustment device according to claim 1, characterized in that: The rotating part (3) is fastened to the cover plate (4).

3. The aperture adjustment device according to claim 2, characterized in that: The rotating component (3) is provided with columns (5) evenly distributed around the light-transmitting hole, and the columns (5) are provided with latches (6). The edge of the light-transmitting hole of the cover plate (4) is fastened to the latches (6).

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