A slit device facilitating debugging

Abstract

The utility model relates to a kind of slit devices convenient for debugging, comprising: shell, inside cavity is formed;Two groups of driving components, each group of driving components includes coaxial connection driving part and differential head;Two groups of slit components, symmetrically set between two groups of driving components, slit component includes slider and slit piece on slider;Linear guide rail, between two groups of driving components, and located the same side of two groups of slit components;The slider of slit component is slidably connected with linear guide rail, and the extension direction of linear guide rail is parallel to the axis of driving part and differential head;Wherein, slit piece is equipped with connecting section, and is connected with the output end of corresponding differential head by connecting section.The slit device of the utility model is convenient for debugging, and overall structure is compact, and adjustment precision is high, especially applicable to small spectrometer.

Description

Technical Field

[0001] This utility model relates to the field of optical analysis instrument technology, and more specifically, to a slit device that is easy to adjust. Background Technology

[0002] A spectrometer is a precision instrument based on the principle of spectral analysis, used to analyze the chemical composition and microstructure of substances. A spectrometer decomposes the polychromatic light from a substance into a series of monochromatic lights of different wavelengths, thus forming a measurable spectrum. Since different substances have unique characteristic spectra, by analyzing the obtained spectra and comparing them with known standard spectra, the spectrometer can analyze the composition and structure of the substance. The slit device, as a key component of the spectrometer, is usually placed at the entrance of the optical path. By controlling the width of the slit, the amount of incident light entering the spectrometer can be controlled: the wider the slit, the more light enters the spectrometer per unit time, and the stronger the spectral signal formed by the spectrometer; conversely, the less light, the weaker the signal. On the other hand, the width of the slit determines the resolution of the spectrometer: the narrower the slit, the less overlap and confusion between adjacent spectral lines in the spectrum formed by the spectrometer, and the easier it is to distinguish them clearly, resulting in a stronger resolving power; conversely, the high degree of overlap between adjacent spectral lines in the spectrum makes it difficult for the spectrometer to effectively analyze the composition and structure of the substance.

[0003] To achieve precise micrometer-level adjustment of the slit width, existing slit devices often employ complex servo control systems and precision transmission mechanisms. This results in a complex overall structure, large size, and high manufacturing costs, failing to meet the stringent spatial requirements of small spectrometers. Furthermore, compact slit devices lack effective adjustment aids, making it difficult to guarantee adjustment efficiency and accuracy. Therefore, the market urgently needs a miniaturized slit device that is easy to adjust. Utility Model Content

[0004] The purpose of this invention is to provide a slit device that is easy to adjust, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0006] This utility model provides a slit device that is easy to adjust, comprising: The outer shell has an internal cavity. Two sets of drive components, each set of drive components including a coaxially connected drive element and a micrometer head; Two sets of slit assemblies are symmetrically arranged between the two sets of drive assemblies, and each slit assembly includes a slider and a slit plate disposed on the slider; A linear guide is disposed between the two sets of drive components and located on the same side of the two sets of slit components; the slider of the slit component slides with the linear guide, and the extension direction of the linear guide is parallel to the axis of the drive component and the micrometer head; The slit plate is provided with a connecting section, and is connected to the output end of the corresponding micrometer head through the connecting section.

[0007] In some embodiments of this application, the driving component is a servo motor or a stepper motor.

[0008] In some embodiments of this application, the two sets of drive elements are configured to drive the two differential heads to move toward or in opposite directions along parallel axes, respectively.

[0009] Some embodiments of this application also include two sets of calibration components, each set of calibration components being disposed at one end of one set of slit components away from the other set of slit components, the calibration components being used to detect the position of the slit components.

[0010] In some embodiments of this application, the calibration assembly includes at least one set of photoelectric switches and sensing elements, one of the photoelectric switches and one of the sensing elements being fixed to one side of one set of slit assemblies away from another set of slit assemblies, and the other being fixed to the slit plate of one set of slit assemblies.

[0011] Some embodiments of this application also include a micrometer; the housing has an entrance hole and an exit hole respectively on the opposite sides of the slit position formed between the two sets of slit assemblies, and the micrometer is detachably disposed on the outside of the exit hole of the housing to indicate the slit width between the two slit plates.

[0012] In some embodiments of this application, the outer casing is provided with a slot adapted to the shape of the micrometer, and the micrometer is snapped into the slot.

[0013] As can be seen from the above technical solution, the embodiments of this utility model have at least the following advantages and positive effects: 1. Applicable to small spectrometers. The slit device of this invention, through its integrated structural design, meets the requirements of small spectrometers for compact structure and precise slit adjustment.

[0014] On the one hand, the slit device of this utility model arranges two sets of slit components and the linear guide rail together between two sets of drive components, and the linear guide rail is located on the same side of the two sets of slit components, forming a parallel layout of drive components, slit components and linear guide rail, which avoids interference between the components in the device and reduces the overall size of the device on the axis perpendicular to the drive component.

[0015] On the other hand, the slit device of this invention also incorporates a micrometer head coaxially connected to the driving component, converting the rotational motion of the driving component into a micrometer-level precise linear displacement at the output end of the micrometer head. Since the slit plate is connected to the output end of the corresponding micrometer head via a connecting section, the precise linear displacement of the micrometer head can be transmitted to the slit plate, ensuring that the slit plate and the corresponding micrometer head move synchronously in linear motion. Simultaneously, because the slit plate is mounted on the slider, and the slider slides in conjunction with a linear guide rail whose extension direction is parallel to the axis of the driving component, the two slit plates, while moving synchronously with their corresponding micrometer heads, can also move linearly along an axis parallel to the axis of the driving component under the guidance of the linear guide rail. Furthermore, the symmetrical arrangement of the two sets of slit components provides a mirror-symmetric structural basis for the linear movement of the two slit plates in opposite directions, ensuring that the initial position and displacement trend of the two slit plates remain consistent. Under the synergistic effect of the micrometer head and the linear guide rail, the edges of the two slit plates maintain a very high degree of parallelism during movement, thereby ensuring that the slit width can be adjusted uniformly and precisely.

[0016] Therefore, this invention not only integrates almost all the functional components required for drive and slit adjustment into the inner cavity of the housing through a parallel layout, making full use of the internal space of the slit device and significantly reducing the overall size of the device, but also ensures that the slit width of the slit device can be adjusted uniformly and precisely through the synergistic effect of the micrometer head and the linear guide rail. Thus, the slit device of this invention has the advantages of compact structure and precise slit adjustment, making it particularly suitable for small spectrometers.

[0017] 2. Facilitates Adjustment. The slit device of this invention utilizes a micrometer located on the outside of the light-emitting aperture of the device housing to indicate the slit width formed between the two slit plates, enabling the adjustment process to be quantified. When adjusting the slit device, the operator controls the drive assembly via an external device, thereby driving the slit assembly to move. With the aid of a microscope, the operator can precisely align the edge of the slit plate with the scale line of the micrometer, thus adjusting the specific slit width using the micrometer scale. Furthermore, two sets of calibration components located inside the device can detect the position of the slit assembly, thereby detecting the slit's closed state. This slit's closed state serves as a "zero point" for the adjustment process, ensuring that the slit plates return to the same initial position during each opening and closing process, thus guaranteeing the reliability and stability of the adjustment results. Attached Figure Description

[0018] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein: Figure 1 This is a schematic diagram of the internal structure of a slit device that is easy to debug according to this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of a slit device that is easy to debug according to this utility model.

[0020] Figure 3 This is a structural schematic diagram of a slit device that is easy to adjust according to this utility model from another angle.

[0021] Figure 4 This is a schematic diagram of the structure of a slit device without a micrometer that is easy to adjust according to this utility model.

[0022] The annotations in the attached figures are explained as follows: 1. Outer shell; 11. Card slot; 111. Flared opening; 12. Light inlet hole; 13. Light outlet hole; 2. Drive components; 21. Drive elements; 22. Micrometer head; 23. Adapters; 3. Slit assembly; 31. Slider; 32. Slit plate; 321. Connecting section; 3211. Socket hole; 4. Linear guide rail; 5. Calibration component; 51. Photoelectric switch; 511. Sensing terminal; 52. Sensing unit; 6. Micrometer. Detailed Implementation

[0023] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0024] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0025] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0026] Please see Figure 1 An embodiment of this utility model provides a slit device that is easy to debug, which mainly includes: a housing 1, two sets of drive components 2, two sets of slit components 3, and a linear guide rail 4.

[0027] A cavity is formed inside the outer shell 1.

[0028] The two sets of drive components 2, each set of drive components 2 includes a coaxially connected drive element 21 and a micrometer head 22.

[0029] Two sets of slit assemblies 3 are symmetrically arranged between two sets of drive assemblies 2. Each slit assembly 3 includes a slider 31 and a slit plate 32 disposed on the slider 31.

[0030] The linear guide 4 is disposed between the two sets of driving components 2 and is located on the same side of the two sets of slit components 3; the slider 31 of the slit component 3 is slidably engaged with the linear guide 4, and the extension direction of the linear guide 4 is parallel to the axis of the driving component 21 and the micrometer head 22.

[0031] The slit plate 32 is provided with a connecting section 321, and is connected to the output end of the micrometer head 22 through the connecting section 321.

[0032] The slit device of this invention, through its integrated structural design, meets the requirements of small spectrometers for compact structure and precise slit adjustment.

[0033] On the one hand, the slit device of this utility model arranges two sets of slit components 3 and the linear guide rail 4 together between two sets of drive components 2, and the linear guide rail 4 is located on the same side of the two sets of slit components 3, forming a parallel layout of drive components 2, slit components 3 and linear guide rail 4, which avoids interference between the components in the device and reduces the overall size of the device on the axis perpendicular to the drive components 2.

[0034] On the other hand, the slit device of this utility model also provides a micrometer head 22 coaxially connected to the drive member 21, so that the rotational motion of the drive member 21 is converted into a micrometer-level precise linear displacement at the output end of the micrometer head 22. Since the slit plate 32 is connected to the output end of the corresponding micrometer head 22 through the connecting section 321, the precise linear displacement of the micrometer head 22 can be transmitted to the slit plate 32, ensuring that the slit plate 32 and the corresponding micrometer head 22 perform synchronous linear displacement. At the same time, since the slit plate 32 is provided on the slider 31, and the slider 31 is slidably engaged with the linear guide rail 4 whose extension direction is parallel to the axis of the drive component 2, the two slit plates 32 can move synchronously with the corresponding micrometer head 22, and can also move linearly along an axis parallel to the axis of the drive component 2 under the guidance of the linear guide rail 4. Furthermore, since the two sets of slit components 3 are symmetrically arranged, a mirror symmetry structural basis is provided for the linear movement of the two slit plates 32 in opposite directions, ensuring that the initial position and displacement trend of the two slit plates 32 remain consistent. Under the synergistic effect of the differential head 22 and the linear guide rail 4, the edges of the two slit plates 32 always maintain a very high degree of parallelism during the movement, thereby ensuring that the slit width can be adjusted uniformly and precisely.

[0035] Therefore, this invention not only integrates almost all the functional components required for drive and slit adjustment into the inner cavity of the housing 1 through a parallel layout, making full use of the internal space of the slit device and significantly reducing the overall size of the device, but also ensures that the slit width of the slit device of this invention can be adjusted uniformly and precisely through the synergistic effect of the micrometer head 22 and the linear guide rail 4. Thus, the slit device of this invention has the advantages of compact structure and precise slit adjustment, and is particularly suitable for small spectrometers.

[0036] Specifically, the output end of the drive unit 21 is connected to the micrometer head 22 via an adapter 23. It is understood that the adapter 23 includes, but is not limited to, a coupling.

[0037] Specifically, the slider 31 of the slit assembly 3 is provided with a guide protrusion (not shown in the figure), and the linear guide rail 4 is provided with a guide groove (not shown in the figure). The guide protrusion is inserted into the guide groove and slidably connected to the guide groove. It is understood that the positions of the guide protrusion and the guide groove can be interchanged; the cooperation method between the guide protrusion and the guide groove includes, but is not limited to, dovetail groove cooperation and T-slot cooperation.

[0038] Specifically, the number of linear guide rails 4 is one or two; preferably one. By setting a linear guide rail 4 located on the same side of the two sets of slit assemblies 3 and slidingly engaging with the sliders 31 of the two sets of slit assemblies 3, the number of components required for the overall device is reduced, meeting the requirement of a compact overall layout of the device.

[0039] Specifically, the connecting section 321 is provided with a socket 3211 whose diameter is adapted to the outer diameter of the output end of the micrometer head 22. The output end of the micrometer head 22 is inserted into the socket 3211 and fixedly connected to the connecting section 321.

[0040] In a preferred embodiment, the drive component 21 is a servo motor or a stepper motor. The servo motor or stepper motor can convert the electrical control commands of the external device into precise mechanical angular displacement, which in turn is converted into precise linear displacement of the micrometer head 22. At the same time, the micrometer head 22 drives the slit plate 32 to move linearly in sync, thereby achieving precise adjustment of the slit.

[0041] Please see Figure 1 In a preferred embodiment, the two sets of driving components 21 are configured to drive the two microheads 22 to move in opposite directions or in the opposite direction along parallel axes, respectively. Thus, the slit control device of this invention can simultaneously drive the corresponding two sets of slit components 3 under the two sets of driving components 2 to synchronously adjust the slit width, and can also achieve one set of driving components 2 driving a corresponding slit component 3 to adjust the position of a single slit plate 32.

[0042] Please see Figure 1 In a preferred embodiment, it further includes two sets of calibration components 5, each set of calibration components 5 being disposed at one end of one set of slit components 3 away from the other set of slit components 3, the calibration components 5 being used to detect the position of the slit components 3.

[0043] Specifically, the calibration component 5 includes at least one set of photoelectric switches 51 and sensing units 52. One of the photoelectric switches 51 and the sensing units 52 is fixed to one side of one set of slit components 3 away from another set of slit components 3, and the other is fixed to the slit plate 32 of one set of slit components 3.

[0044] The calibration component 5, located inside the device, can detect the position of the slit component 3, thereby detecting the closure state of the slit. The closure state of the slit is then used as the "zero point" for the adjustment process of the device, ensuring that the slit plate 32 can return to the same initial position in each opening and closing process, thus guaranteeing the reliability and stability of the debugging results.

[0045] In this embodiment, the photoelectric switch 51 is fixed to one side of the group of slit assemblies 3 away from the other group of slit assemblies 3, and the sensing part 52 is fixed to the slit plate 32 of the group of slit assemblies 3.

[0046] The sensing end 511 of the photoelectric switch 51 can output different electrical signals depending on whether it is blocked by an object. By setting up a calibration assembly 5 including the photoelectric switch 51 and the sensing part 52, the operator can determine whether the slit is open or closed by observing changes in the electrical signal. Specifically, when the slit is open, the sensing part 52 moves with the slit plate 32 and inserts into the sensing end 511 of the photoelectric switch 51, forming a blockage, causing the photoelectric switch 51 to output an electrical signal indicating that the slit is open; when the slit is closed to the "zero point", the sensing part 52 moves with the slit plate 32 and moves out of the sensing end 511 of the photoelectric switch 51, releasing the blockage, and the electrical signal output by the photoelectric switch 51 changes accordingly. Based on this, the operator can determine that the slit is closed. Since the principle of the photoelectric switch 51 and the sensing part 52 is prior art, it will not be further elaborated here.

[0047] Please see Figures 1 to 4 In a preferred embodiment, a micrometer 6 is also included; the housing 1 has an entrance hole 12 and an exit hole 13 on opposite sides of the slit position formed between the two sets of slit assemblies 3, and the micrometer 6 is detachably disposed on the outside of the exit hole 13 of the housing 1 to indicate the width between the two slit plates 32.

[0048] Please see Figure 3 and Figure 4 In a preferred embodiment, the outer casing 1 is provided with a slot 11 that is adapted to the shape of the micrometer 6, and the micrometer 6 is snapped into the slot 11.

[0049] Furthermore, at least one corner of the slot 11 is provided with a flared opening 111 to facilitate the operator to smoothly pick up and put in the micrometer 6.

[0050] By providing a micrometer 6 on the outside of the light outlet 13 of the device housing 1 to indicate the slit width formed between the two slit plates 32, the adjustment process can be quantified. When adjusting the slit device, the operator controls the drive assembly 2 through an external device, thereby driving the slit assembly 3 to move; with the aid of a microscope, the operator can precisely align the edge of the slit plate 32 with the scale line of the micrometer 6, thereby adjusting the specific slit width through the scale line of the micrometer 6.

[0051] In a preferred embodiment, a control circuit board (not shown) is also included, which is disposed within the cavity of the housing 1; the control circuit board is electrically connected to the two drive components 2 and the two calibration components 5, and is also electrically connected to an external device.

[0052] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A slit device that is easy to adjust, characterized in that, include: The outer shell has an internal cavity. Two sets of drive components, each set of drive components including a coaxially connected drive element and a micrometer head; Two sets of slit assemblies are symmetrically arranged between the two sets of drive assemblies, and each slit assembly includes a slider and a slit plate disposed on the slider; A linear guide rail is disposed between the two sets of drive components and located on the same side of the two sets of slit components; the slider of the slit component slides with the linear guide rail, and the extension direction of the linear guide rail is parallel to the axis of the drive component and the micrometer head. The slit plate is provided with a connecting section, and is connected to the output end of the corresponding micrometer head through the connecting section.

2. The slit device for easy adjustment according to claim 1, characterized in that, The driving component is a servo motor or a stepper motor.

3. The slit device for easy adjustment according to claim 1, characterized in that, The two sets of drive elements are configured to drive the two differential heads to move toward or in opposite directions along parallel axes, respectively.

4. The slit device for easy adjustment according to claim 1, characterized in that, It also includes two sets of calibration components, each set of calibration components being disposed at one end of one set of slit components away from the other set of slit components, the calibration components being used to detect the position of each set of slit components.

5. The slit device for easy adjustment according to claim 4, characterized in that, The calibration assembly includes at least one set of photoelectric switches and sensors, one of the photoelectric switches and one of the sensors being fixed to one side of one set of slit assemblies away from the other set of slit assemblies, and the other being fixed to the slit plate of one set of slit assemblies.

6. The slit device for easy adjustment according to claim 1, characterized in that, It also includes a micrometer; the housing has light inlet and light outlet openings on opposite sides of the slit positions formed between the two sets of slit assemblies, and the micrometer is detachably disposed on the outside of the light outlet opening of the housing to indicate the slit width between the two slit plates.

7. The slit device for easy adjustment according to claim 6, characterized in that, The outer casing is provided with a slot that matches the shape of the micrometer, and the micrometer is snapped into the slot.

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