Simple spectrometer

Abstract

The utility model discloses a simple spectrometer comprising a housing, the housing is provided with a slit assembly, the slit assembly comprises a slit with an adjustable width, the slit assembly is also connected with a shading member, and the housing is internally provided with a dispersion element and a receiver. And the receiver is also connected with a processing unit for processing data. According to the simple spectrograph provided by the utility model, incident light enters the inside of the spectrograph through the slit, dispersion is generated through the dispersion element to form a spectral image, the receiver receives the formed spectral image, and the spectral image is processed and analyzed through the processing unit, so that the wavelength and the relative intensity of a spectrum are obtained; the device has the advantages of being small in size, low in cost, easy to operate, convenient to carry and high in measurement precision, and is suitable for all scenes needing continuous, rapid and real-time measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of optics, in particular to a simple spectrometer. Background Art

[0002] Spectrometers have been widely used in spectral measurement in the fields of optics and fiber-optic communications. Currently, conventional spectrometers usually use optical dispersion elements, such as gratings, to diffract the incident light, emit light of different wavelengths at different angles, and then detect light of different wavelengths at different positions of an array photodetector, or continuously change the incident angle of the light to the grating, so that the emitted light of different wavelengths passes through specific slits in turn and is detected by visual inspection or a photodetector. However, traditional spectrometers are not only large in size but also expensive, and small fiber-optic spectrometers are even more expensive.

[0003] In view of this, it is necessary to propose further improvements to the current simple spectrometer structure. Utility Model Content

[0004] Therefore, the utility model aims to solve the deficiencies in the prior art to at least a certain extent, and thus proposes.

[0005] In order to achieve the above purpose, a technical solution adopted by the utility model is:

[0006] The utility model provides a simple spectrometer, comprising a shell, a slit assembly is arranged on the shell, the slit assembly comprises a slit with adjustable width, the slit assembly is also connected to a shading member, and a dispersion element and a receiver are arranged in the shell, the receiver is also connected to a processing unit for processing data.

[0007] Furthermore, the grating density of the dispersion element is 600-2400L / mm.

[0008] Furthermore, the slit assembly includes a first shading plate and a second shading plate that are arranged opposite to each other, and the slit is formed therebetween. The first shading plate can be moved closer to or farther from the second shading plate to adjust the width of the slit.

[0009] Furthermore, the housing is connected to the first shading plate via a first adjusting member, and the first adjusting member is connected to a second adjusting member, and the second adjusting member can adjust the first adjusting member to drive the first shading plate to be closer to or farther from the second shading plate.

[0010] Furthermore, the first shading plate is fixed to the first adjusting member via a fixing member, and the first adjusting member can drive the first shading plate to reciprocate relative to the second shading plate, and the second shading plate is fixedly connected to the housing.

[0011] Furthermore, the first shading plate is provided with a mounting hole for accommodating the first adjusting member, the interior of the mounting hole is provided with a thread at one end close to the second adjusting member, and the other end is smoothly arranged, the first adjusting member is provided with a thread matching the mounting hole at one end close to the second adjusting member, and the other end is also smoothly arranged and connected to the first shading plate through the fixing member.

[0012] Furthermore, the first adjusting member drives the first shading plate to perform reciprocating motion relative to the second shading plate, and the motion range is 0-3 mm.

[0013] Furthermore, the slit assembly further includes a frame, the frame is arranged outside the shell, the shading member is screwed on the frame, and the shading member cover is arranged on the slit.

[0014] Furthermore, the shading member is a shading tube, and the inner diameter of the shading tube is 20-30 mm, and the outer diameter is 30-40 mm.

[0015] Furthermore, the incident angle of the slit is 27-39°.

[0016] The utility model provides a simple spectrometer, including a shell, a slit assembly is arranged on the shell, the slit assembly includes a slit with adjustable width, the slit assembly is also connected to a light shielding member, and a dispersion element and a receiver are arranged in the shell, and the receiver is also connected to a processing unit for processing data. Through the simple spectrometer provided by the utility model, the incident light enters the inside of the spectrometer through the slit, and the dispersion element generates dispersion to form a spectrum image, the receiver receives the formed spectrum image and then processes and analyzes it through the processing unit, so as to obtain the wavelength and relative intensity of the spectrum. It has the characteristics of small size, low cost, simple operation, easy to carry, and high measurement accuracy, and is suitable for all scenes requiring continuous, fast, and real-time measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a schematic cross-sectional view of the internal structure of the simple spectrometer of the utility model;

[0019] Figure 2 It is a front structural schematic diagram of the simple spectrometer of the utility model.

[0020] The reference numerals in the figure are as follows: 1. Shell; 2. Slit assembly; 21. Slit; 22. Shading member; 23. First shading plate; 24. Second shading plate; 3. First adjusting member; 4. Second adjusting member; 5. Fixing member; 6. Dispersion element; 7. Receiver; 8. Processing unit. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0023] Please refer to Figure 1 to Figure 2 The utility model provides a simple spectrometer, including a shell 1, a slit assembly 2 is arranged on the shell 1, the slit assembly 2 includes a slit 21 with adjustable width, the slit assembly 2 is also connected to a shading member 22, and a dispersion element 6 and a receiver 7 are arranged in the shell 1, and the receiver 7 is also connected to a processing unit 8 for processing data.

[0024] In this embodiment, the simple spectrometer includes a housing 1, and a slit assembly 2 is arranged in the housing 1, wherein the slit assembly 2 includes a slit 21, and the slit 21 can adjust its own width to generate a line light source, and the line light sources generated by different widths are also different. Specifically, the incident angle of the slit 21 is 27-39°, and the incident light within this angle enters the slit 21. The splitting effect is the best; a shading member 22 is connected to one side of the slit assembly 2, and the shading member 22 is used for shading. A dispersion element 6 and a receiver 7 are also arranged inside the housing 1, and a processing unit 8 is also connected to the side of the receiver 7 away from the dispersion element 6, wherein the receiver 7 is specifically a camera for capturing images in this embodiment, and the processing unit 8 is used to process the image captured by the receiver. Specifically, the processing unit 8 specifically includes a camera circuit board, and the camera circuit board is externally connected to a data line for transmitting the received image to an external software, so as to process the spectral image, wherein the camera circuit board is a common circuit board on the market, and the specific model of the camera circuit board is not limited here, and is set according to actual production needs.

[0025] The simple spectrometer is characterized by small size, low cost, simple operation, portability and high measurement accuracy by arranging a dispersion element 6 in a shell 1 and receiving an image dispersed by the dispersion element 6. The resolution reaches 0.6nm and the accuracy reaches ±0.5nm. The simple spectrometer can be widely used in spectral measurement and analysis and is suitable for all scenarios requiring continuous, rapid and real-time measurement, such as spectral measurement in university physics experiments and university chemistry experiments. It can also be used in the field of spectral analysis of scientific research and testing institutions. It is a tool that can realize convenient spectrum measurement anytime and anywhere and is used in university physics experiments and university chemistry experiments, such as LED spectrum measurement, atomic spectrum measurement, solution spectrum absorbance measurement, etc.

[0026] Specifically, the incident light enters the slit 21 through the shading member 22, and enters the housing 1 from the slit 21. The incident light is dispersed by the dispersion element 6 to form discrete spectral lines. The receiver 7 receives the spectral lines and obtains a spectral image. The receiver 7 transmits the obtained spectral image to the processing unit 8. The processing unit 8 then processes and analyzes the received spectral image to obtain the wavelength and relative intensity of the spectrum. Among them, a through hole is provided on the dispersion element 6, and the light can enter the receiver 7 from the through hole of the dispersion element 6, so that the receiver 7 receives the spectral image.

[0027] Furthermore, the grating density of the dispersion element 6 is 600-2400 L / mm.

[0028] In this embodiment, the grating density of the dispersion element 6 is 600-2400L / mm, and the specific grating density of the dispersion element 6 is not limited here, and is set according to actual production requirements. Specifically, the dispersion element 6 can be an optical disc, and the specific grating density of the optical disc is 1351L / mm. In this embodiment, the optical disc is specifically used, which can play the role of optical disc reuse, excellent economy, reduced physical size, compressed cost, and improved detection convenience; specifically, the dispersion element can also be a grating, and the use of a grating can make the spectrometer smaller and more portable. The specific type of the dispersion element 6 is not limited here, and is set according to actual production requirements.

[0029] Furthermore, the slit assembly 2 further comprises a first shading plate 23 and a second shading plate 24 which are arranged opposite to each other, and a slit 21 is formed therebetween. The first shading plate 23 can be moved closer to or farther from the second shading plate 24 to adjust the width of the slit 21 .

[0030] In this embodiment, the slit assembly 2 also includes a first light shading plate 23 and a second light shading plate 24. The first light shading plate 23 and the second light shading plate 24 are arranged opposite to each other, and the distance between the two forms a slit 21, and the width of the slit 21 is adjusted by adjusting the distance between the first light shading plate 23 and the second light shading plate 24. Specifically, the distance between the two is adjusted by moving the first light shading plate 23 closer to or farther away from the second light shading plate 24, thereby adjusting the width of the slit 21.

[0031] Furthermore, the housing 1 is connected to the first shading plate 23 via a first adjusting member 3 , and a second adjusting member 4 is connected to the first adjusting member 3 . The second adjusting member 4 can adjust the first adjusting member 3 to drive the first shading plate 23 to be closer to or farther from the second shading plate 24 .

[0032] In this embodiment, the housing 1 is connected to the first light shielding plate 23 through the first adjusting member 3, and the end of the first adjusting member 3 away from the first light shielding plate 23 is connected to the second adjusting member 4, that is, one end of the first adjusting member 3 is connected to the first light shielding plate 23, and the other end is connected to the housing 1 and the second adjusting member 4. Specifically, the second adjusting member 4 can adjust the first adjusting member 3 to drive the first light shielding plate 23 to approach or move away from the second light shielding plate 24, wherein the first adjusting member 3 in this embodiment is specifically an adjusting screw, and the second adjusting member 4 in this embodiment is specifically an adjusting nut, that is, the adjusting screw sequentially penetrates the housing 1 and the first light shielding plate 23 to connect the housing 1 and the first light shielding plate 23, and the end of the adjusting screw close to the housing 1 is also connected to the adjusting nut, which is exposed outside the housing 1, and the adjusting screw can be driven to drive the first light shielding plate 23 to reciprocate by twisting the adjusting nut.

[0033] Furthermore, the first shading plate 23 is fixed to the first adjusting member 3 via a fixing member 5 , and the first adjusting member 3 can drive the first shading plate 23 to reciprocate relative to the second shading plate 24 , and the second shading plate 24 is fixedly connected to the housing 1 .

[0034] In this embodiment, the first light shielding plate 23 is connected to the first adjusting member 3 through a fixing member 5, so that the first adjusting member 3 can drive the first light shielding plate 23 to reciprocate relative to the second light shielding plate 24, wherein the fixing member 5 in this embodiment is specifically a fixing screw, that is, the first light shielding plate 23 is fixed to the adjusting screw through the fixing screw, so that the adjusting screw can drive the first light shielding plate 23 to move when it moves, and the second light shielding plate 24 is fixedly connected to the shell 1, so that the movement of the first light shielding plate 23 can adjust the distance between the first light shielding plate 23 and the second light shielding plate 24, thereby adjusting the width of the slit 21.

[0035] Furthermore, a mounting hole for accommodating the first adjusting member 3 is provided on the first shading plate 23, and a thread is provided at one end of the mounting hole close to the second adjusting member 4, and the other end is smooth. A thread matching the mounting hole is provided at one end of the first adjusting member 3 close to the second adjusting member 4, and the other end is also smooth and connected to the first shading plate 23 through the fixing member 5.

[0036] In the present embodiment, a mounting hole is provided on a side of the first shading plate 23 close to the shell 1, and the first adjusting member 3 penetrates the shell 1 and is inserted into the mounting hole, wherein the mounting hole is divided into two parts, the inner side wall of the part close to the shell 1 is provided with a thread, and the inner side wall of the part away from the shell 1 is a smooth inner wall, and the first adjusting member 3 is also divided into two parts, the part close to the shell 1 is also provided with a thread, and the part away from the shell 1 is also smoothly set, that is, the mounting hole is matched with the first adjusting member 3, and is divided into two parts, one part is a threaded connection setting, and the other part is a smooth setting, the first adjusting member 3 is screwed with the mounting hole through the thread, the smooth end of the first adjusting member 3 is set at the smooth inner wall of the mounting hole, and the first shading plate 23 is connected through the fixing member 5, and the distance that the first adjusting member 3 drives the first shading plate 23 to move can be limited by a part of the threaded setting and a part of the smooth setting, and the range of motion of the first adjusting member 3 driving the first shading plate 23 to reciprocate relative to the second shading plate 24 is 0-3mm, and it is continuously adjustable.

[0037] Furthermore, the slit assembly 2 further includes a frame, which is disposed outside the housing 1 , and the shading member 22 is screwed onto the frame, and the shading member 22 is covered on the slit 21 .

[0038] In the present embodiment, the slit assembly 2 further includes a frame, which is disposed on one side of the slit assembly 2 outside the housing 1 and is used to screw the shading member 22, so that the shading member 22 can be covered on the slit 21. The shading member 22 is connected to the frame by threads to form a tight combination, thereby playing a role in preventing stray light and ensuring that no stray light enters the slit 21. Specifically, the shading member 22 is a shading circular tube, the inner diameter of the shading tube is 20-30 mm, the inner diameter is specifically 25 mm in the present embodiment, and the outer diameter is 30-40 mm, specifically 35 mm in the present embodiment. The inner diameter and outer diameter of the shading tube are not specifically limited here, and are set according to actual production needs.

[0039] The utility model provides a simple spectrometer, including a shell, a slit assembly is arranged on the shell, the slit assembly includes a slit with adjustable width, the slit assembly is also connected to a light shielding member, and a dispersion element and a receiver are arranged in the shell, and the receiver is also connected to a processing unit for processing data. Through the simple spectrometer provided by the utility model, the incident light enters the inside of the spectrometer through the slit, and the dispersion element generates dispersion to form a spectrum image, the receiver receives the formed spectrum image and then processes and analyzes it through the processing unit, so as to obtain the wavelength and relative intensity of the spectrum. It has the characteristics of small size, low cost, simple operation, easy to carry, and high measurement accuracy, and is suitable for all scenes requiring continuous, fast, and real-time measurement.

[0040] It should be noted that the various embodiments in the present invention are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0041] It should also be noted that, in the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined in the present invention may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in the present invention, but will conform to the widest range consistent with the principles and novel features disclosed in the present invention.

Claims

1. A simple spectrometer, characterized in that: It includes a shell, on which a slit assembly is arranged, the slit assembly includes a slit with adjustable width, the slit assembly is also connected to a shading member, and a dispersion element and a receiver are arranged in the shell, the receiver is also connected to a processing unit for processing data, the slit assembly includes a first shading plate and a second shading plate arranged opposite to each other, the slit is formed therebetween, and the first shading plate can be close to or away from the second shading plate to adjust the width of the slit.

2. The simple spectrometer according to claim 1, characterized in that: The grating density of the dispersion element is 600-2400 L / mm.

3. The simple spectrometer according to claim 1, characterized in that: The housing is connected to the first shading plate via a first adjusting member, and the first adjusting member is connected to a second adjusting member, and the second adjusting member can adjust the first adjusting member to drive the first shading plate to be closer to or farther from the second shading plate.

4. The simple spectrometer according to claim 3, characterized in that: The first shading plate is fixed to the first adjusting member via a fixing member. The first adjusting member can drive the first shading plate to reciprocate relative to the second shading plate. The second shading plate is fixedly connected to the housing.

5. The simple spectrometer according to claim 4, characterized in that: The first shading plate is provided with a mounting hole for accommodating the first adjusting member, the interior of the mounting hole is provided with a thread at one end close to the second adjusting member, and the other end is smooth; the first adjusting member is provided with a thread matching the mounting hole at one end close to the second adjusting member, and the other end is also smooth and connected to the first shading plate through the fixing member.

6. The simple spectrometer according to claim 5, characterized in that: The first adjusting member drives the first shading plate to perform reciprocating motion relative to the second shading plate within a range of 0-3 mm.

7. The simple spectrometer according to claim 1, characterized in that: The slit assembly further comprises a frame, which is arranged outside the shell, and the shading member is screwed on the frame, and the shading member is covered on the slit.

8. The simple spectrometer according to claim 1, characterized in that: The shading member is a shading tube, the inner diameter of the shading tube is 20-30 mm, and the outer diameter is 30-40 mm.

9. The simple spectrometer according to claim 1, characterized in that: The incident angle of the slit is 27-39°.

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