Spectrometer based on wireless communication

Abstract

The utility model relates to a spectrograph based on wireless communication, the spectrograph comprises a main body, a diffraction modulation module arranged on the main body, a detector module and a data processing module, the diffraction modulation module carries out space coding on incident light to obtain spectrums of all wavelengths of the incident light, the detector module receives the spectrums diffracted by the diffraction modulation module, and the data processing module carries out data processing on the spectrums. And the detector module is used for converting the energy of the spectrum into a digital signal, and the data processing module is used for receiving the digital signal sent by the detector module, analyzing and processing the digital signal and sending an analysis result to external display equipment for displaying. According to the spectrograph, the problem that the spectrograph needs to be externally connected with a large-size device through a data line for data processing and display is solved, the spectrograph can be in communication connection with a portable display device, carrying is convenient, real-time measurement is carried out, meanwhile, the detector module directly focuses and images dispersed light, a focusing element is omitted, and the cost is reduced. The optical path structure is simplified, and miniaturization of the optical spectrum instrument is achieved.

Description

Technical Field

[0001] The present application relates to the field of spectral analysis, and in particular to a spectrometer based on wireless communication. Background Art

[0002] Spectroscopy and spectral analysis are widely used methods in scientific work, which can identify the spectrum of substances and determine their components. Spectrometers, as indispensable tools in spectral analysis methods, can measure and analyze light information and are widely used in air and water quality testing, agricultural environmental measurement, chemical substance analysis, biomedical testing, and aerospace exploration.

[0003] In the related art, the spectrometer needs to be equipped with a screen display device on the device body. Some screen display devices are too large and inconvenient to carry, resulting in the inability to perform real-time measurements.

[0004] Currently, no effective solution has been proposed for the problem in related technologies that spectrometers need to be connected to large-volume devices via data cables for data processing and display. Utility Model Content

[0005] The embodiment of the present application provides a spectrometer based on wireless communication, so as to at least solve the problem in the related art that the spectrometer needs to be connected to a large-volume device via a data line for data processing and display.

[0006] In a first aspect, an embodiment of the present application provides a spectrometer based on wireless communication, the spectrometer comprising: a main body, a cosine corrector, a wavefront shaper, a diffraction modulation module, a detector module and a data processing module arranged on the main body, wherein:

[0007] The cosine corrector includes a microlens array, which performs multiple light homogenization operations on the incident light beam to form a uniform light spot to illuminate the wavefront shaper;

[0008] The wavefront shaper is used to correct the propagation direction of the incident light to a target direction;

[0009] The diffraction modulation module is used to perform spatial encoding on the incident light to obtain the spectrum of each wavelength of the incident light, and the diffraction modulation module includes a plane reflective diffraction element, and a periodic micro-nano structure is provided on the surface of the plane reflective diffraction element, and the period of the micro-nano structure is in the range of 50nm to 1000nm;

[0010] The detector module is arranged opposite to the diffraction modulation module, fixed on the upper surface of the data processing module, and is used to receive the spectrum diffracted by the diffraction modulation module and convert the energy of the spectrum into a digital signal;

[0011] The data processing module is electrically connected to the detector module and is in communication connection with the external display device, and is used to receive the digital signal sent by the detector module, analyze and process the digital signal, and send the analysis result to the external display device for display. The data processing module includes a data analysis component and a communication component.

[0012] The data analysis component is used to decode and analyze the digital signal based on a neural network processor to obtain the spectral data of the incident light;

[0013] The communication component is connected to the external display device via near field communication, and is used to send the spectral data to the external display device to instruct the external display device to display the spectral data.

[0014] In some embodiments, the spectrometer further comprises an aperture group, and the aperture group is located between the wavefront shaper and the diffraction modulation module on the same optical path.

[0015] The aperture group is used to disperse the incident light to obtain monochromatic light, and reflect the monochromatic light to the diffraction modulation module at different angles.

[0016] In some embodiments, the aperture group includes: a first incident aperture, a light-transmitting hole, and a second incident aperture.

[0017] The incident light passes through the first incident aperture, the light-transmitting hole and the second incident aperture in sequence to be dispersed to obtain different monochromatic lights, and the monochromatic lights are reflected to the diffraction modulation module at different angles.

[0018] In some embodiments, the detector module includes a CMOS area array image sensor, the field of view of the CMOS area array image sensor is 40 to 150°, the focal length is 2 to 5 mm, and the effective pixel array is (1-1920)H×(1-1080)V.

[0019] In some embodiments, the spectrometer further comprises a housing, the housing comprises a receiving cavity, and a light inlet and a data connection hole communicating with the receiving cavity are provided on the housing;

[0020] The accommodating cavity is used to install the diffraction modulation module, the detector module, the data processing module, the wavefront shaper and the cosine corrector;

[0021] The light entrance is arranged corresponding to the cosine corrector, so that the incident light enters the cosine corrector through the light entrance.

[0022] In some embodiments, the spectrometer further includes a power supply module.

[0023] The power supply module is electrically connected to the data processing module, and the spectrometer is powered by the data processing module.

[0024] Compared with the related art, the spectrometer based on wireless communication provided in the embodiment of the present application includes a main body, a diffraction modulation module, a detector module and a data processing module arranged on the main body, the diffraction modulation module performs spatial encoding on the incident light to obtain the spectrum of each wavelength of the incident light, the detector module receives the spectrum diffracted by the diffraction modulation module, converts the energy of the spectrum into a digital signal, the data processing module receives the digital signal sent by the detector module, analyzes and processes the digital signal, and sends the analysis result to an external display device for display. The problem that the spectrometer needs to be connected to a large-volume device through a data line for data processing and display is solved. The spectrometer provided in the embodiment of the present application can be connected to a portable display device for communication, which is convenient to carry for real-time measurement. At the same time, the detector module directly focuses and images the dispersed light, eliminating the focusing element, shortening the optical path of the spectrometer, simplifying the optical path structure, and achieving the miniaturization of the spectrometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 is a schematic diagram of an application environment of a spectrometer based on wireless communication according to an embodiment of the present application;

[0027] Figure 2 is a schematic diagram of a spectrometer based on wireless communication according to an embodiment of the present application.

[0028] In the above drawings, the meanings of the reference numerals are as follows:

[0029] 10. Spectrometer; 11. External display device; 20. Main body; 21. Diffraction modulation module; 22. Detector module; 23. Data processing module; 24. Wavefront shaper; 25. Cosine corrector; 26. Aperture group; 261. First incident aperture; 262. Light-transmitting hole; 263. Second incident aperture; 27. Shell; 271. Light inlet; 272. Data connection hole; 28. Power supply module. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0031] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0032] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0033] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0034] Figure 1 Schematic diagram of the application environment of the wireless communication-based spectrometer according to the embodiment of the present application. The wireless communication-based spectrometer provided by the present application can be applied to Figure 1 In the application environment shown. Figure 1 As shown, the spectrometer 10 communicates with the external display device 11 through a network. The spectrometer 10 analyzes and processes the incident light, and sends the analysis and processing results to the external display device 11, and the external display device 11 displays the analysis and processing results. Among them, the external display device 11 includes a smart phone, a computer and other portable display devices.

[0035] This embodiment provides a spectrometer based on wireless communication. Figure 2 is a schematic diagram of a spectrometer based on wireless communication according to an embodiment of the present application, such as Figure 2 As shown, the spectrometer includes: a main body 20, a diffraction modulation module 21, a detector module 22 and a data processing module 23 arranged on the main body.

[0036] The diffraction modulation module 21 is used to perform spatial encoding on the incident light to obtain the spectrum of each wavelength of the incident light.

[0037] In some of the embodiments, the diffraction modulation module 21 includes a planar reflective diffraction element with dimensions of (2-50) mm×(2-50) mm×(2-50) mm in length, width and height. A periodic micro-nano structure is provided on the surface of the planar reflective diffraction element, and the period of the micro-nano structure is in the range of 50 nm to 1000 nm.

[0038] The plane diffraction element can be a one-dimensional or two-dimensional concave reflection grating, a CD, a DVD or a blueray-DVD disc, or other devices with the same principle as the plane grating. The surface of the plane reflection diffraction element (DOE2) is provided with a periodic micro-nano structure, and the period of the micro-nano structure is 50nm-1000nm. The diffraction modulation module 21 is installed on the inner surface of the spectrometer, on the same optical path as the aperture group 26, with a certain inclination angle of 5-80°. The plane reflection diffraction element (DOE2) performs spatial encoding on the optical signal after passing through the aperture.

[0039] The diffraction modulation module 21 uses a plane reflection diffraction device (DOE2), and the spectrometer performs spatial encoding on the light signal after passing through the aperture group 26, so that the signals finally acting on different pixels of the detector module 22 are signals encoded with different composite wavelengths. In addition, the DOE component has low cost and is easy to produce, which solves the problem of mass production, reduces production costs and shortens production cycles.

[0040] The detector module 22 is arranged opposite to the diffraction modulation module 21 and fixed on the upper surface of the data processing module 23 to receive the spectrum diffracted by the diffraction modulation module 21 and convert the energy of the spectrum into a digital signal.

[0041] In this embodiment, the detector module 22 may be an area array CMOS image sensor or an area (line) array CCD.

[0042] In some embodiments, the detector module 22 includes a CMOS area array image sensor having a field of view of 40 to 150°, a focal length of 2 to 5 mm, and an effective pixel array of (1-1920)H×(1-1080)V.

[0043] The detector module 22 is arranged vertically to the center of the diffraction modulation module 21, and adopts a complementary metal oxide semiconductor (CMOS) area array image sensor to receive the spectrum of each wavelength diffracted by the planar reflection diffraction element (DOE2). The CMOS area array image sensor is composed of a large number of photosensitive elements (pixels), each pixel can sense the light signal in a specific wavelength range and convert it into an electrical signal.

[0044] The CMOS area array image sensor converts the spectral signal into a digital signal, which can realize high-speed acquisition and digitization of the spectrum, and facilitate subsequent processing and analysis. In addition, the image sensor has the characteristics of high integration, and is usually a chip that integrates a large number of pixels and electronic components. Compared with traditional focusing components, it has a smaller size and a lighter structure. The detector module 22 directly focuses and images the dispersed light through the CMOS area array image sensor, eliminating the focusing component, shortening the optical path of the spectrometer, simplifying the optical path structure, and achieving the miniaturization of the spectrometer.

[0045] The detector module 22 provides the spectrometer detection system with image information of the light source or the sample to be tested under the auxiliary light source, and adopts a planar array CMOS image sensor with fast transmission speed and low noise, and can effectively convert the detected spectral information into a digital signal and transmit it to the data processing module 23. Compared with the traditional linear array sensor, the planar array image sensor has lower cost, larger photosensitive area, and greater total photosensitive amount, so the signal-to-noise ratio is higher.

[0046] The data processing module 23 is electrically connected to the detector module 22 and is communicatively connected to the external display device, and is used for receiving the digital signal sent by the detector module 22, analyzing and processing the digital signal, and sending the analysis result to the external display device for display.

[0047] In some of the embodiments, the data processing module 23 includes a data analysis component and a communication component.

[0048] The data analysis component is used to decode and analyze the digital signal based on a neural network processor to obtain spectral data of the incident light.

[0049] The neural network processor (NPU) processes, decodes and classifies spectral data through neural network algorithms. It can learn and identify specific patterns, features or bands in spectral signals to realize automatic processing and analysis of spectra. For example, NPU can apply deep learning models to learn spectral features by training a large amount of spectral data, and use them for tasks such as classification, quantitative analysis, and spectral reconstruction.

[0050] The data analysis component measures the wavelength and intensity of the spectral components corresponding to the digital signal through a neural network processor (NPU), thereby obtaining the characteristic parameters of the substance being studied.

[0051] The communication component is connected to the external display device via near field communication, and is used to send the spectral data to the external display device to instruct the external display device to display the spectral data.

[0052] The communication between the communication component and the external display device is based on 802-class wireless communication protocols, including Bluetooth communication and WiFi communication.

[0053] The detector module 22 processes the optical signal received from the spectrometer system through the CMOS chip and converts it into a data signal and transmits it to the data processing module 23. The data processing module 23 performs preliminary processing on the digital signal through the neural network processor (NPU) and stores it or sends it to the display device through near field communication, and the display device further processes and displays the spectral data, wherein near field communication includes Bluetooth communication, NFC communication and RFID (radio frequency identification).

[0054] The data processing module 23 is installed inside the housing 27 and is electrically connected to the detector module 22. The spectral material analysis calculation is localized through the neural network processing unit (NPU), thereby saving network computing resources.

[0055] The above-mentioned spectrometer spatially encodes the incident light through the diffraction modulation module 21 to obtain the spectrum of each wavelength of the incident light. The detector module 22 receives the spectrum diffracted by the diffraction modulation module 21, converts the energy of the spectrum into a digital signal, and the data processing module 23 receives the digital signal sent by the detector module 22, analyzes and processes the digital signal, and sends the analysis result to an external display device for display. The problem that the spectrometer needs to be connected to a large-volume device through a data line for data processing and display is solved. The spectrometer provided in the embodiment of the present application can be communicated with a portable display device, which is convenient to carry for real-time measurement. At the same time, the detector module directly focuses and images the dispersed light, eliminating the focusing element, shortening the optical path of the spectrometer, simplifying the optical path structure, and miniaturizing the spectrometer.

[0056] In some embodiments, the spectrometer further includes a wavefront shaper 24 disposed on the main body 20.

[0057] The wavefront shaper 24 is used to correct the propagation direction of the incident light to the target direction.

[0058] On the same optical path, the wavefront shaper 24 is located after the cosine corrector 25. The wavefront shaper 24 can be a light homogenizer, a diffuser, or other devices with the same principle. Wavefront shaping is to change the wavefront information of the incident light, that is, the direction and phase of the light, so that the light after passing through the scattering medium can be refocused or imaged. The wavefront shaper 24 can achieve light collimation and shaping in a variety of ways, for example, using a lens array or a phase modulator.

[0059] The phase modulator introduces specific phase modulation on the light wavefront as needed, thereby changing the shape of the light wavefront. It can achieve precise control of the light wavefront through components such as liquid crystal, gratings, and lasers, and can achieve light shaping and regulation by changing the phase distribution of the light wavefront.

[0060] The lens array consists of multiple tiny lenses, each of which can process a small part of the incident light. These microlenses can split the incident light wavefront into multiple parts, adjust the phase and amplitude of each part through the refraction effect of the lens, and finally refocus it on the focal plane, thereby achieving wavefront shaping and collimation.

[0061] In some embodiments, the spectrometer further includes a cosine corrector 25 disposed on the main body 20.

[0062] The cosine corrector 25 includes a microlens array, which performs multiple light homogenization operations on the incident light beam to form a uniform light spot to illuminate the wavefront shaper.

[0063] The cosine corrector 25 is installed inside the spectrometer housing. Its material can be fused quartz, sapphire or plastic, with a length and width of 1-50 mm. The surface of the cosine corrector 25 is covered with irregular microlenses of different structures. When the light beam is incident, each microlens transmits the part of the light irradiated on its surface as a light spot with uniform energy distribution. The incident light beam is subjected to multiple homogenization operations, and all the light spots are superimposed through phase modulation and light interference to form a uniform light spot that irradiates the wavefront shaper.

[0064] The cosine corrector 25 introduces an adjustable phase element in the optical path, and implements phase modulation through the phase element to change the phase distribution of the incident light wavefront, wherein the phase element can be a liquid crystal or other modulator. Phase modulation causes different parts of the incident light beam to have different phases, and when they meet, light interference effects occur. In this embodiment, the cosine corrector 25 performs multiple phase modulations on the incident light beam, and each modulation introduces a certain phase difference, which causes the light spots at different positions and times to interfere with each other. Through multiple phase modulations, the inhomogeneity of the incident light beam is offset at different positions and times. On a specific observation plane, a uniform light spot can be formed by synthesizing multiple phase-modulated light spots. The wavefront shaper 24 collimates the incident light, eliminating the collimation element, avoiding light path stacking, further simplifying the light path structure, and achieving miniaturization of the spectroscopic instrument.

[0065] The cosine corrector 25 and the wavefront shaper 24 provide a uniform incident light source for the spectrometer detection system, avoiding the phenomenon that the center light intensity of the planar reflective diffraction element (DOE2) is high and the edge light intensity is weakened, thereby improving the diffraction efficiency of DOE2.

[0066] In some of the embodiments, the spectrometer further includes an aperture group 26 . The aperture group 26 is located between the wavefront shaper 24 and the diffraction modulation module 21 on the same optical path.

[0067] The aperture group 26 is used to disperse the incident light to obtain monochromatic light, and reflect the monochromatic light to the diffraction modulation module at different angles.

[0068] In some embodiments, the aperture group 26 includes: a first incident aperture 261 , a light-transmitting hole 262 and a second incident aperture 263 .

[0069] The incident light passes through the first incident aperture 261, the light-transmitting hole 262 and the second incident aperture 263 in sequence to be dispersed to obtain different monochromatic lights, and the monochromatic lights are reflected to the diffraction modulation module at different angles.

[0070] In this embodiment, the rectangular aperture group 26 of the spectrometer is used to coordinate the resolution and light throughput of the spectrometer, and provide sufficient incident light intensity for the spectrometer. The aperture width is 50-1000 μm, fixed inside the spectrometer, on the same optical path as the wavefront shaper 24, and located after the wavefront shaper 24. The incident aperture is divided into a first incident aperture and a second incident aperture, and the distance between the two is 100-3000 μm.

[0071] The working principle of the micro-spectrometer in single aperture is as follows: the incident light enters from the light inlet 271, passes through the wavefront shaper 24 to make the light uniform, and then passes through the incident aperture. The aperture disperses the complex light incident from the aperture into monochromatic light through the dispersion effect, and reflects it to the detector module 22 at different angles. The detector module 22 converts the received optical signal into an electrical signal and transmits it to the data processing module 23, which analyzes and stores it or outputs it to the display device through the data transmission interface.

[0072] The working principle of the micro-spectrometer with double apertures is as follows: the incident light enters from the light inlet 271, passes through the wavefront shaper 24 to make the light uniform, and then diffracts through the first incident aperture 261, the light-transmitting hole 262, and the second incident aperture 263. The aperture disperses the complex light incident from the aperture into monochromatic light through the dispersion effect, and reflects it to the detector module 22 at different angles. The detector module 22 converts the received optical signal into an electrical signal and transmits it to the data processing module 23, which analyzes and stores it or outputs it to the display device through the data transmission interface.

[0073] The aperture group 26 further performs phase control on the complex light after wavefront shaping, so as to facilitate the modulation of the planar reflective diffraction element (DOE2) at a predetermined phase.

[0074] In some of the embodiments, the spectrometer further includes a housing 27 , the housing 27 includes a receiving cavity, and a light inlet 271 and a data connection hole 272 communicating with the receiving cavity are provided on the housing.

[0075] The accommodating cavity is used to install the diffraction modulation module 21 , the detector module 22 , the data processing module 23 , the wavefront shaper 24 and the cosine corrector 25 .

[0076] The light entrance is arranged corresponding to the cosine corrector 25 so that the incident light enters the cosine corrector through the light entrance.

[0077] The shell 27 adopts a closed structure to provide a light-proof environment to eliminate the influence of external ambient light sources on the test sample. It also provides corresponding installation positions for the diffraction modulation module 21, the detector module 22, the data processing module 23, the wavefront shaper 24 and the cosine corrector 25, the aperture group 26, the power supply module 28 and other components.

[0078] Optionally, the housing 27 includes a plurality of side walls (such as 4, 6 or 8) and two end walls, and the housing 27 can also be set as an annular closed curved surface. The housing is made of metal or high molecular polymer. The high thermal conductivity housing provides passive heat dissipation for the processor and CMOS, isolates the battery from heat, and thus achieves the effect of reducing the thermal noise level.

[0079] The housing 27 is provided with a penetrating light inlet 271 and a data connection hole 272. In this embodiment, the spectrometer can be wirelessly connected to a mobile communication device through a communication component, and can also be connected to an external display device through the data connection hole.

[0080] In some of the embodiments, the spectrometer further comprises a power supply module.

[0081] The power supply module 28 is electrically connected to the data processing module 23 , and supplies power to the spectrometer through the data processing module 23 .

[0082] Optionally, the power supply module 28 can be powered by a carbon battery, an alkaline battery or a lithium battery, and has a length and width of 10-50 mm and a height of 5-30 mm. It is installed below the data processing module 23 and is controlled by the data processing module 23 to power the entire spectrometer device.

[0083] The built-in power supply module 28 of the spectrometer solves the problem of needing an external power supply and enables independent use, thus meeting the need for measurement anytime and anywhere.

[0084] The spectrometer provided in the present application uses a wavefront shaper 24 to collimate the incident light, eliminating the collimation element and avoiding the stacking of the optical path; the detector module 22 is used to directly focus and image the dispersed light, eliminating the focusing element, shortening the optical path of the spectrometer, simplifying the optical path structure, and miniaturizing the spectrometer. At the same time, the area array CMOS image sensor has fast transmission speed, lower cost, larger photosensitive area, and greater total photosensitive amount, so the signal-to-noise ratio is higher. The cosine corrector 25 and the wavefront shaper 24 provide a uniform incident light source for the spectrometer detection system, avoiding the phenomenon of high central light intensity and weakened edge light intensity of the plane reflection diffraction device, and improving the diffraction efficiency of DOE2. The aperture group 26 and the DOE2 element in the diffraction modulation module 21 are used to diffract and modulate the incident light, which has a simple structure, high diffraction efficiency, and is easy to produce and assemble. A wireless communication component is set on the data processing module 23, which can directly connect to an external display device.

[0085] Those skilled in the art should understand that the technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A spectrometer based on wireless communication, characterized in that: The spectrometer comprises: a main body, a cosine corrector, a wavefront shaper, a diffraction modulation module, a detector module and a data processing module arranged on the main body, wherein: The cosine corrector includes a microlens array, which performs multiple light homogenization operations on the incident light beam to form a uniform light spot to illuminate the wavefront shaper; The wavefront shaper is used to correct the propagation direction of the incident light to a target direction; The diffraction modulation module is used to perform spatial encoding on the incident light to obtain the spectrum of each wavelength of the incident light, and the diffraction modulation module includes a plane reflective diffraction element, and a periodic micro-nano structure is provided on the surface of the plane reflective diffraction element, and the period of the micro-nano structure is in the range of 50nm to 1000nm; The detector module is arranged opposite to the diffraction modulation module, fixed on the upper surface of the data processing module, and is used to receive the spectrum diffracted by the diffraction modulation module and convert the energy of the spectrum into a digital signal; The data processing module is electrically connected to the detector module and is in communication connection with the external display device, and is used to receive the digital signal sent by the detector module, analyze and process the digital signal, and send the analysis result to the external display device for display. The data processing module includes a data analysis component and a communication component. The data analysis component is used to decode and analyze the digital signal based on a neural network processor to obtain the spectral data of the incident light; The communication component is connected to the external display device via near field communication, and is used to send the spectral data to the external display device to instruct the external display device to display the spectral data.

2. The spectrometer according to claim 1, characterized in that The spectrometer further comprises an aperture group, which is located between the wavefront shaper and the diffraction modulation module on the same optical path. The aperture group is used to disperse the incident light to obtain monochromatic light, and reflect the monochromatic light to the diffraction modulation module at different angles.

3. The spectrometer according to claim 2, characterized in that The aperture group includes: a first incident aperture, a light-transmitting hole, and a second incident aperture. The incident light passes through the first incident aperture, the light-transmitting hole and the second incident aperture in sequence to be dispersed to obtain different monochromatic lights, and the monochromatic lights are reflected to the diffraction modulation module at different angles.

4. The spectrometer according to claim 1, characterized in that The detector module comprises a CMOS area array image sensor, the field angle of the CMOS area array image sensor is 40 to 150 degrees, the focal length is 2 to 5 mm, and the effective pixel array is (1-1920)H×(1-1080)V.

5. The spectrometer according to claim 1, characterized in that: The spectrometer further comprises a housing, the housing comprises a receiving cavity, and a light inlet and a data connection hole communicating with the receiving cavity are arranged on the housing; The accommodating cavity is used to install the diffraction modulation module, the detector module, the data processing module, the wavefront shaper and the cosine corrector; The light entrance is arranged corresponding to the cosine corrector, so that the incident light enters the cosine corrector through the light entrance.

6. The spectrometer according to claim 1, characterized in that The spectrometer also includes a power supply module, The power supply module is electrically connected to the data processing module, and the spectrometer is powered by the data processing module.

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