High-resolution and high-efficiency optical sky patrol system

Abstract

The invention relates to the technical field of astronomy, in particular to a high-resolution and high-efficiency optical sky patrol system. The system comprises an optical lens, a reconfigurable spectrum filtering chip and a reconfigurable modulation module, the reconfigurable spectrum filtering chip comprises a spectrum filter and an image sensor, and the reconfigurable modulation module is used for applying external voltage to the reconfigurable spectrum filtering chip through an electrode; the spectral filter is connected with the reconfigurable modulation module and the optical lens and is used for obtaining a spectral image through the optical lens and external voltage; and the image sensor is connected with the spectral filter and is used for acquiring a spectral image and outputting a digital image corresponding to the spectral image. According to the invention, the sub-angstrom spectral resolution and high optical transmittance are realized in the visible light range, the imaging efficiency is improved, the independence of space-spectrum coding among different pixels is increased, and the large-scale, rapid and high-precision spectrum patrol requirements of the next generation are met.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of astronomy, and in particular to a high-resolution and high-efficiency optical sky survey system, method and storage medium. BACKGROUND

[0002] The spectrum survey technology is to observe a large range of sky area through a telescope and obtain spectrum data of celestial bodies. The spectrum survey technology can decompose light of celestial bodies into different wavelength spectrums by using a spectrum device, so as to analyze physical information such as chemical composition, temperature, density, speed, distance, etc.

[0003] In the related art, a multi-target optical fiber sky survey system is used to obtain spectrum data of celestial bodies. However, the multi-target optical fiber sky survey system has a limited space area covered by each sky survey, and the target layout alignment process is complex and time-consuming, and the obtained spatial pixels are limited, which cannot meet the demand of the next generation of large-scale, fast and high-precision spectrum survey. Alternatively, a slit spectrum scanning system is used to obtain spectrum data of celestial bodies. However, the slit spectrum scanning system has extremely limited space coverage, and cannot meet the demand of high-precision and high-spectrum resolution spectrum acquisition. SUMMARY

[0004] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0005] To this end, a first object of the present disclosure is to provide a high-resolution and high-efficiency optical sky survey system. The system combines a reconfigurable spectrum filter chip with an optical lens to achieve sub-angstrom spectrum resolution and high optical transmittance in the visible light range, and improves the imaging efficiency. The system also uses a reconfigurable modulation module to achieve real-time adjustability of spectrum modulation, thereby increasing the independence of spatial-spectrum coding between different pixels, and achieving the "trinity" of high spatial pixels, high spectrum resolution and ultra-high observation efficiency, thereby improving the sky survey efficiency and meeting the demand of the next generation of large-scale, fast and high-precision spectrum survey.

[0006] A second object of the present disclosure is to provide a sky survey method of a high-resolution and high-efficiency optical sky survey system.

[0007] To achieve the above objects, a first aspect of an embodiment of the present disclosure provides a high-resolution and high-efficiency optical sky survey system. The system includes an optical lens, a reconfigurable spectrum filter chip and a reconfigurable modulation module. The reconfigurable spectrum filter chip includes a spectrum filter and an image sensor. The reconfigurable modulation module is configured to apply an external voltage to the reconfigurable spectrum filter chip through electrodes. The reconfigurable modulation module is configured to apply an external voltage to the reconfigurable spectrum filter chip through electrodes. The spectrum filter is connected with the reconfigurable modulation module and the optical lens, and is configured to obtain a spectrum image through the optical lens and the external voltage. The image sensor is connected with the spectral filter, and is configured to acquire the spectral image and output a digital image corresponding to the spectral image.

[0008] Optionally, in the embodiment of the present disclosure, the spectral filter is in a stepped shape, and the layer height corresponding to different pixels in a specific layer of the spectral filter changes in a preset step.

[0009] Optionally, in the embodiment of the present disclosure, the base core of the spectral filter is made of a reconfigurable material, and the two sides of the base core are respectively plated with a distributed Bragg mirror composed of materials with different refractive indexes.

[0010] Optionally, in the embodiment of the present disclosure, the spectral image obtained through the optical lens and the applied voltage includes: acquiring a light source through the optical lens; under the condition of the applied voltage, the light source obtains a spectral image of a target wavelength through the specific layer.

[0011] Optionally, in the embodiment of the present disclosure, the applied voltage to the reconfigurable spectral filter chip through the electrode includes: determining a required applied voltage; applying the required applied voltage to the reconfigurable spectral filter chip through a wire by using a programmable power supply.

[0012] Optionally, in the embodiment of the present disclosure, the applied voltage to the reconfigurable spectral filter chip through the electrode includes: determining a required applied voltage curve; applying the required applied voltage corresponding to the applied voltage curve to the reconfigurable spectral filter chip through a wire based on the applied voltage curve by using a programmable power supply.

[0013] Optionally, in the embodiment of the present disclosure, the reconfigurable material is lithium niobate, and the materials with different refractive indexes include SiO2 and Ta2O5.

[0014] Optionally, in the embodiment of the present disclosure, the layer height corresponding to different pixels in a specific layer of the spectral filter changes in a preset step, including: the layer height corresponding to different pixels in a specific layer of the spectral filter increases in a first preset step; or the layer height corresponding to different pixels in a specific layer of the spectral filter decreases in a second preset step.

[0015] To achieve the above purpose, the second aspect embodiment of the present disclosure proposes a sky survey method using the high-resolution and high-efficiency optical sky survey system of the first aspect, including: determine an applied voltage curve based on a sky survey task, wherein the sky survey task is an astronomical observation task; apply an applied voltage to a reconfigurable spectral filtering chip based on the applied voltage curve through a reconfigurable modulation module; obtain a digital image corresponding to the sky survey task through an optical lens and the reconfigurable spectral filtering chip.

[0016] Another object of the present application is to provide an electronic device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method of the second aspect.

[0017] Another object of the present application is to provide a computer storage medium, wherein the computer storage medium stores computer executable instructions; and the computer executable instructions are executed by a processor to enable a computer to perform the method of the second aspect.

[0018] The high-resolution and high-efficiency optical sky survey system, method and storage medium provided by the embodiments of the present disclosure, the system comprises an optical lens, a reconfigurable spectral filtering chip and a reconfigurable modulation module, the reconfigurable spectral filtering chip comprises a spectral filter and an image sensor, wherein the reconfigurable modulation module is used to apply an applied voltage to the reconfigurable spectral filtering chip through an electrode; the spectral filter is connected with the reconfigurable modulation module and the optical lens, and is used to obtain a spectral image through the optical lens and the applied voltage; the image sensor is connected with the spectral filter, and is used to obtain the spectral image and output a digital image corresponding to the spectral image. The present disclosure can realize sub-angstrom spectral resolution and high optical transmittance in the visible light range through the combination of the reconfigurable spectral filtering chip and the optical lens, and improve the imaging efficiency. The real-time adjustability of spectral modulation is realized through the reconfigurable modulation module, thereby increasing the independence of the spatial-spectral coding between different pixels, realizing the "trinity" of sky survey capability of high spatial pixel, high spectral resolution and super-high observation efficiency, improving the sky survey efficiency, and meeting the next-generation large-scale, fast and high-precision spectral sky survey demand.

[0019] Additional aspects and advantages of the present disclosure will be made apparent from the following description, which, taken in conjunction with the accompanying drawings, that will show by way of illustration the principles of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present disclosure will become apparent and more readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 A structural schematic diagram of a high-resolution and high-efficiency optical sky survey system provided by an embodiment of the present disclosure; Figure 2 A side cutting schematic diagram of a spectrum filter provided by an embodiment of the present disclosure; Figure 3 A schematic diagram of a hardware experimental device of a high-resolution and high-efficiency optical sky survey system provided by an embodiment of the present disclosure; Figure 4 A flowchart of a sky survey method of a high-resolution and high-efficiency optical sky survey system provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0021] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0022] In the related art, a multi-target optical fiber sky survey system is a core technology of modern astronomical spectral observation, and its principle is to simultaneously collect light signals of multiple celestial bodies by using a large number of precisely positionable optical fibers. Among them, the multi-target optical fiber sky survey system first accurately aligns the projection position of the target celestial body on the focal plane according to the star map of the observation area through a mechanical or robotic positioning system, and thousands of optical fibers. The port of each optical fiber captures the light of the corresponding celestial body and conducts it to the back-end spectrometer, which disperses the light signal into a spectrum and records it by a detector. In this way, the multi-target optical fiber sky survey system can simultaneously obtain the spectra of thousands of celestial bodies in a single exposure, greatly improving the observation efficiency. However, the above multi-target optical fiber sky survey system adopts a "fiber collection + multi-target spectrometer" mode, which can simultaneously obtain a large number of celestial body spectra, but can only cover a limited spatial area each time, and the target layout needs to consume a lot of time, and the spatial pixels are limited.

[0023] Moreover, slit-spectral scanning systems (e.g., JWST, Gaia) combine the dual capabilities of wide-area survey and deep-fine observation. The slit-spectral scanning system takes advantage of the space telescope's lack of atmospheric interference and combines two working modes: on the one hand, through the regular scanning motion of the satellite, the celestial bodies pass through the fixed spectral dispersion element (e.g., Gaia's prism) of the focal plane in turn, realizing continuous spectral survey of the entire sky, low resolution, and high repetition rate; on the other hand, in the staring mode, using programmable micro shutters, integral field units or multi-fiber systems (e.g., JWST), long-term observation of specific regions is used to obtain high-resolution, high-signal-to-noise ratio spectral data. This technology combines large field scanning and fixed-point deep observation through orbit design, focal plane integration and intelligent target selection, taking into account the breadth and depth, and comprehensively obtaining the position, motion, chemical composition and physical state of celestial bodies, supporting multi-scale research from the structure of the Milky Way to the evolution of the universe. However, the spatial coverage of this system is extremely limited (especially IFS); and the fast survey speed of Gaia cannot meet the needs of high-precision, high-spectral resolution spectral acquisition, and cannot meet the requirements of both space and spectral.

[0024] Further, the low spatial coverage and parallel efficiency are the main bottlenecks of current multi-object fiber survey systems. Although such systems can simultaneously obtain the spectra of multiple celestial bodies through thousands of fibers, significantly improving the observation efficiency, their capabilities still have obvious limitations. First, each fiber can only be aimed at a specific target, and the positioning of the fiber depends on complex mechanical devices, which need to be reconfigured when switching between different observation fields, thus the above process takes a long time, usually several minutes or even longer, making it difficult to quickly collect the spectra of thousands of stars in a short time, limiting the ability to respond to transient sources or large sample dynamic celestial bodies in a timely manner. Second, the physical size and number of fiber focal planes limit the field of view, and a single observation can only cover a limited area, making it difficult to achieve large-area continuous scanning. And, fibers are essentially discrete sampling points and cannot provide complete and seamless spatial coverage of celestial bodies or galaxies, so they cannot obtain continuous spatially resolved spectral images, making it particularly difficult to study the fine physical processes of extended celestial bodies (such as galaxy arms and nebular structures). Therefore, traditional fiber survey systems still have significant shortcomings in spatial continuity and observation agility.

[0025] Moreover, there is a significant trade-off between resolution and scanning speed, which limits the comprehensive ability of modern spectral surveys. Although traditional slit spectrographs and integral field spectrographs (IFS) can provide high spectral resolution to accurately resolve the details of celestial spectra, they are usually designed for small fields of view and specific targets with long exposure times, which limits the spatial coverage and makes it difficult to achieve fast scanning of large areas of the sky. On the other hand, space-based surveys like Gaia use a slitless scanning mode, which can complete low-resolution spectral observations of billions of stars in a few years by spinning the satellite and continuously reading out the focal plane. This has achieved unprecedented survey speed and coverage of celestial bodies. However, in exchange for high efficiency and large field of view, the spectral resolution of Gaia is low, which cannot resolve fine spectral structures and is difficult to use for accurate physical parameter inversion or detailed analysis of complex celestial systems. Therefore, current technology cannot balance high resolution and fast wide-area scanning, which limits the comprehensive understanding of dynamic universe and complex celestial systems. This contradiction needs to be broken through by new spectral technology.

[0026] Furthermore, the equipment is large in size and complex in structure, with limited cost and flexibility. Existing large-scale spectral survey equipment, especially telescopes equipped with multi-target fiber systems, generally have large size and complex structure, which seriously restricts their cost-effectiveness and deployment flexibility. Among them, such systems usually consist of a main telescope, a precise focal plane positioning device (such as thousands of movable fibers or micro-robots), a complex optical transmission system, and a large backend spectrometer, with high integration, large footprint, and extremely high manufacturing and maintenance costs. For example, facilities such as LAMOST or SDSS require a dedicated dome and a stable foundation, with strict requirements for environmental conditions such as atmospheric stability, vibration control, and temperature regulation, which can only be operated in a few high-quality sites for a long time. The high investment and fixed architecture make it difficult for the equipment to be moved or deployed quickly in different geographic locations, making it difficult to adapt to temporary observation tasks, regional scientific projects, or education and popularization needs. At the same time, the complexity of the system also increases the risk of failure and maintenance difficulty, prolonging the upgrade cycle. In addition, the high construction and operation cost limits the participation of small and medium-sized scientific research institutions or developing countries in large-scale spectral surveys, which is not conducive to the sharing of scientific resources. Therefore, how to realize the miniaturization, modularization, and low-cost of spectral equipment while ensuring performance has become an important direction for promoting the popularization and innovation of astronomical observation technology.

[0027] In summary, the existing multi-target optical sky surveys (SDSS, LAMOST, DESI) have strong parallel capabilities, but the spatial coverage and observation efficiency are still limited; and the slit / integral field scanning systems (JWST, Gaia, etc.) have high resolution or large survey capabilities, but are subject to field of view, resolution or scanning method, and are difficult to meet high spatial pixels, high spectral resolution and ultra-high observation efficiency at the same time.

[0028] The high-resolution and high-efficiency optical sky survey system and the sky survey method of the present disclosure will be described in detail below in conjunction with specific embodiments.

[0029] Figure 1 A structural schematic diagram of a high-resolution and high-efficiency optical sky survey system provided by an embodiment of the present disclosure is shown in FIG. 1. Figure 1 As shown in the figure, the high-resolution and high-efficiency optical sky survey system includes an optical lens, a reconfigurable spectral filtering chip and a reconfigurable modulation module. The reconfigurable spectral filtering chip includes a spectral filter and an image sensor, wherein, the reconfigurable modulation module is configured to apply an external voltage to the reconfigurable spectral filtering chip through electrodes; the spectral filter is connected with the reconfigurable modulation module and the optical lens, and is configured to obtain a spectral image through the optical lens and the external voltage; the image sensor is connected with the spectral filter, and is configured to acquire the spectral image and output a digital image corresponding to the spectral image.

[0030] In an embodiment of the present disclosure, the spectral filter is stepped, and the layer height corresponding to different pixels in a specific layer of the spectral filter changes by a preset step. In an embodiment of the present disclosure, the base of the spectral filter is made of a reconfigurable material, and the two sides of the base core are plated with a distributed Bragg mirror composed of materials with different refractive indices. It should be noted that, in an embodiment of the present disclosure, the specific layer can be a designated layer or any layer.

[0031] In an embodiment of the present disclosure, the reconfigurable material can be lithium niobate, and the materials with different refractive indices can include SiO2 and Ta2O5.

[0032] Figure 2 A side cut schematic diagram of a spectral filter provided by an embodiment of the present disclosure is shown in FIG. 2. Figure 2 As shown in the figure, blue represents SiO2 material and brown represents Ta2O5 material. The spectral filter with different layer heights can be realized by using photoetching and developing technology, and different pixels correspond to different layer heights, as shown in FIG. 3. Figure 2 As shown in the figure, the spectral filter includes 32 step heights, that is, corresponds to 32 different pixels, so that a pixel-level spectral filtering chip can be realized.

[0033] In one embodiment of the present disclosure, the method of changing the layer height corresponding to different pixels in a specific layer of the spectral filter in a preset step can include: increasing the layer height corresponding to different pixels in a specific layer of the spectral filter in a first preset step; or decreasing the layer height corresponding to different pixels in a specific layer of the spectral filter in a second preset step; or randomly arranging the layer height corresponding to different pixels in a specific layer of the spectral filter in different steps. In one embodiment of the present disclosure, the first preset step and the second preset step can be set as needed, and the first preset step and the second preset step can be the same or different.

[0034] Further, in one embodiment of the present disclosure, the base core of the reconfigurable material of the spectral filter can form a typical comb-shaped spectral filter curve using traditional interference optics, and can have high spectral resolution and high optical transmittance at the same time.

[0035] Further, in one embodiment of the present disclosure, the image sensor can be set as needed, such as a CMOS or CCD image sensor with a spatial pixel resolution of 2048x2048.

[0036] Further, in one embodiment of the present disclosure, the optical lens can be set as needed, such as an imaging lens of Edmund.

[0037] In one embodiment of the present disclosure, the high-resolution and high-efficiency optical sky survey system can be applied to existing imaging lenses and image sensors CCD or CMOS.

[0038] For example, in one embodiment of the present disclosure, the optical lens and the reconfigurable spectral filter chip can be composed of a standard optical lens connected with a CMOS image sensor or a CCD image sensor, and a spectral filter on the image sensor. The spectral filter uses lithium niobate with a thickness of 0.5 mm as a base and a reconfigurable material, and a distributed Bragg mirror composed of SiO2 and Ta2O5 is plated on both sides, with thicknesses of (30nm, 30nm, 100nm on the upper surface of the base; 30nm, 30nm, 90nm on the lower surface of the base;). The spectral filter can be integrated into a CMOS with a spatial pixel resolution of 2048x2048.

[0039] Further, in one embodiment of the present disclosure, the method of applying an external voltage to the reconfigurable spectral filter chip through the electrodes can include: determining the required external voltage, and applying the external voltage to the reconfigurable spectral filter chip through wires using a programmable power supply. In this way, different voltages can be applied to the spectral filter system of different pixels through the electrodes, realizing pixel-level electrical control.

[0040] In one embodiment of the present disclosure, different wavelengths correspond to different applied voltages, and based on this, the target wavelength that needs to be transmitted can be determined based on the sky survey task, and the required applied voltage can be determined based on the target wavelength.

[0041] In another embodiment of the present disclosure, the method of applying an applied voltage to the reconfigurable spectral filtering chip through the electrode pair can include determining a required applied voltage curve, and applying an applied voltage corresponding to the applied voltage curve to the reconfigurable spectral filtering chip through the wire pair based on the applied voltage curve by using a programmable power supply.

[0042] In one embodiment of the present disclosure, if the sky survey task is for wavelengths in different voltage ranges, the required applied voltage curve can be determined based on the sky survey task to improve the observation efficiency of the sky survey task.

[0043] Further, in one embodiment of the present disclosure, the pixel-level optical filter is connected to a power supply, and the change in the spectral modulation state is realized by controlling the voltage. Even if adjacent pixels share an electrode, due to the high difference between the pixels and the interference cavity effect, different pixels can still obtain independent spectral modulation characteristics, thereby breaking through the crosstalk problem caused by traditional shared electrodes, realizing real-time adjustability of the spectral modulation characteristics, and significantly increasing the independence of the spatial-spectral coding between different pixels.

[0044] Further, in one embodiment of the present disclosure, the method of obtaining a spectral image by using an optical lens and an applied voltage can include obtaining a light source by using the optical lens, and the light source obtains a spectral image of a target wavelength through a specific layer under the condition of an applied voltage of the reconfigurable material.

[0045] In addition, in an embodiment of the present disclosure, the high-resolution and high-efficiency optical sky survey system of the present disclosure can have an average optical transmittance of up to 73.2% in a wide spectral range of 400-1000 nm, maintain the native spatial resolution of the integrated CMOS sensor, and obtain a complete spectral image of a star with sub-angstrom spectral resolution under single-frame exposure.

[0046] Figure 3 A schematic diagram of a high-resolution and high-efficiency optical sky survey system hardware experimental device is provided for an embodiment of the present disclosure. As shown in Figure 3 a-c, respectively, a commercial astronomical telescope (focal length 910 mm, aperture 90 mm), a long-focus lens (focal length 100 mm, aperture 36 mm), and a short-focus lens (focal length 10 mm, aperture 17 mm) are used; d is a schematic diagram of the high-resolution and high-efficiency optical sky survey system; and e is an experimental device for online spectral snapshot imaging of Vega using a commercial astronomical telescope.

[0047] The high-resolution high-efficiency optical sky survey system provided by the embodiments of the present disclosure comprises an optical lens, a reconfigurable spectral filtering chip and a reconfigurable modulation module. The reconfigurable spectral filtering chip comprises a spectral filter and an image sensor. The reconfigurable modulation module is configured to apply an external voltage to the reconfigurable spectral filtering chip through electrodes. The spectral filter is connected with the reconfigurable modulation module and the optical lens, and is configured to obtain a spectral image through the optical lens and the external voltage. The image sensor is connected with the spectral filter, and is configured to acquire the spectral image and output a digital image corresponding to the spectral image. The present disclosure can realize sub-angstrom spectral resolution and high optical transmittance in the visible light range through the combination of the reconfigurable spectral filtering chip and the optical lens, and improve the imaging efficiency. The real-time adjustability of spectral modulation is realized through the reconfigurable modulation module, thereby increasing the independence of spatial-spectral coding between different pixels, realizing the "trinity" of sky survey capability of high spatial pixel, high spectral resolution and ultra-high observation efficiency, improving the sky survey efficiency, and meeting the next-generation large-scale, rapid and high-precision spectral sky survey demand.

[0048] To achieve the above embodiments, Figure 4 The present disclosure also provides a flowchart of a sky survey method using the high-resolution high-efficiency optical sky survey system. As shown in the figure, Figure 4 The method can comprise the following steps: Step 401, determining an external voltage curve based on a sky survey task, wherein the sky survey task is an astronomical observation task; Step 402, applying an external voltage to the reconfigurable spectral filtering chip through the reconfigurable modulation module based on the external voltage curve; Step 403, acquiring a digital image corresponding to the sky survey task through the optical lens and the reconfigurable spectral filtering chip.

[0049] The collection, storage, use, processing, transmission, provision and disclosure of user personal information in the present disclosure comply with relevant laws and regulations and do not violate public order and good customs.

[0050] It should be noted that the personal information from the user should be collected for legal and reasonable purposes, and should not be shared or sold outside these legal uses. In addition, such collection / sharing should be carried out after the user's informed consent is obtained, including but not limited to informing the user to read the user agreement / user notice before the user uses the function, and signing an agreement / authorization including authorization of relevant user information. In addition, any necessary steps should be taken to protect and ensure access to such personal information data, and to ensure that other people with access to personal information data comply with their privacy policy and processes.

[0051] The present disclosure contemplates that the systems and methods described herein can be deployed in various environments in which privacy of personal information is of concern. For example, the systems and methods described herein can be used in environments in which users are concerned about privacy of their personal information. Accordingly, the present disclosure contemplates providing user-selectable privacy, opt-in, or opt-out options, to enable varying levels of privacy for how their personal information is stored and shared by a particular application, user, or other entity. For example, users can elect to enable or disable sharing of their personal information with others and can also elect to enable or disable programs, such as advertising, from receiving their personal information. In addition, users can control how information is shared, for example, by designating specific recipients or deeming certain information private, and prefer it to not be shared. By implementing the privacy policy and management techniques described herein, application developers can collect and store personal information and later provide opportunities for users to manage their information.

[0052] The acquisition, transmission, storage, use, processing, etc. of data in the technical solutions of the present disclosure comply with relevant provisions of national laws and regulations.

[0053] It should be noted that in the embodiments of the present disclosure, some industry existing solutions, components, models, etc. may be mentioned, which should be considered as exemplary, and the purpose is only to illustrate the feasibility in the implementation of the technical solutions of the present disclosure, but it does not mean that the applicant has or will necessarily use the solutions.

[0054] In the foregoing embodiment description, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0055] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0056] Any process or method descriptions or any other descriptions in flow charts herein or otherwise described herein, can be understood as representing code modules, segments, or portions of code which include one or more executable instructions for implementing specific logic functions (or steps) in the process, and that the various embodiments of the present disclosure include additional implementations in which the order of the steps can be different, including use of hardware or software counter-parts of these code modules, segments or portions of code, all of which are intended to be within the scope of the present disclosure.

[0057] The logic and / or steps represented in the flowcharts and / or described herein, for example, can be considered as a sequence of instructions to implement logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device, such as a computer-based system, processor- based system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable medium can be a computer- readable storage medium or a computer-readable signal medium. The computer-readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium include the following: an electrical connection having one or more wires (electronic), a portable computer diskette (magnetic), a RAM (random access memory), a ROM (read-only memory), an EPROM (erasable programmable ROM), an EEPROM (electrically erasable programmable ROM), and a portable compact disc read-only memory (CD-ROM). In addition, the computer-readable medium can even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for example, via optical scanning of the paper or other medium, then compiled, interpreted, or otherwise processed in a suitable manner, if necessary, and stored in a computer memory.

[0058] It should be understood that aspects of the present disclosure can be implemented in hardware, software, firmware or combinations thereof. In the above embodiments, the various steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As such, if implemented in hardware, and in another embodiment, any of the following technologies, known in the art, or their combinations can be used to implement the above-described embodiments: discrete logic circuitry having logic gates for logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and the like.

[0059] Those skilled in the art can understand that all or part of the steps carried out by the above-mentioned embodiment methods can be completed by programs instructing related hardware, and the programs can be stored in a computer-readable storage medium. When the programs are executed, one or a combination of the steps of the method embodiments is included.

[0060] In addition, each of the functional units in the various embodiments of the present disclosure can be integrated in one processing module, or each unit can exist physically separately, or two or more units can be integrated in one module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0061] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present disclosure have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A high-resolution high-efficiency optical sky survey system, characterized by, The system comprises an optical lens, a reconfigurable spectral filtering chip and a reconfigurable modulation module, the reconfigurable spectral filtering chip comprises a spectral filter and an image sensor, wherein, The reconfigurable modulation module is configured to apply an external voltage to the reconfigurable spectral filtering chip through electrodes; The spectral filter is connected with the reconfigurable modulation module and the optical lens, and is configured to obtain a spectral image through the optical lens and the external voltage; The image sensor is connected with the spectral filter, and is configured to acquire the spectral image and output a digital image corresponding to the spectral image.

2. The system of claim 1, wherein, The spectral filter is in a stepped shape, and a height of a layer corresponding to different pixels in a specific layer of the spectral filter changes by a preset step.

3. The system of claim 2, wherein, A base nucleus of the spectral filter is made of a reconfigurable material, and both sides of the base nucleus are plated with distributed Bragg mirrors composed of materials with different refractive indexes.

4. The system of claim 3, wherein, The obtaining of the spectral image through the optical lens and the external voltage comprises: acquiring a light source through the optical lens; under the external voltage, the light source obtains a spectral image of a target wavelength through the specific layer.

5. The system of claim 1, wherein, The applying of the external voltage to the reconfigurable spectral filtering chip through the electrodes comprises: determining a required external voltage; applying the external voltage to the reconfigurable spectral filtering chip through wires by using a programmable power supply.

6. The system of claim 1, wherein, The applying of the external voltage to the reconfigurable spectral filtering chip through the electrodes comprises: determining a required external voltage curve; applying the external voltage corresponding to the external voltage curve to the reconfigurable spectral filtering chip through wires based on the external voltage curve by using a programmable power supply.

7. The system of claim 3, wherein, The reconfigurable material is lithium niobate, and the materials with different refractive indexes include SiO2 and Ta2O5.

8. The system of claim 2, wherein, The height of the layer corresponding to different pixels in the specific layer of the spectral filter changes by the preset step, which comprises: the height of the layer corresponding to different pixels in the specific layer of the spectral filter increases by a first preset step; or the height of the layer corresponding to different pixels in the specific layer of the spectral filter decreases by a second preset step.

9. A method for sky surveying using the high-resolution and high-efficiency optical sky survey system according to claim 1, characterized in that, The method comprises: determining an external voltage curve based on a sky survey task, wherein the sky survey task is an astronomical observation task; applying an external voltage to a reconfigurable spectral filtering chip through a reconfigurable modulation module based on the external voltage curve; acquiring a digital image corresponding to the sky survey task through an optical lens and the reconfigurable spectral filtering chip.

10. A computer storage medium, wherein, The computer storage medium stores computer executable instructions; the computer executable instructions are executed by a processor to implement the method in claim 9.

Images