Multi-band solar spectrum generation device and method

Abstract

The invention discloses a multiband solar spectrum generation device and method, the device comprises a light source module, a collimation calibration module and a beam combination module, the light source module is used for emitting a plurality of light beams of different bands; the collimation and calibration module is used for respectively carrying out collimation and calibration on the plurality of light beams with different wave bands; and the beam combining module is used for combining the plurality of collimated and calibrated light beams with different wavebands and then outputting the combined light beams. Simulation of solar spectrums of visible light bands, medium-wave infrared radiation bands and long-wave infrared radiation bands is achieved, the structure is simple, energy loss is reduced, and the problem of multi-band solar spectrum simulation is solved.

Description

Technical Field

[0001] The present invention relates to the field of optical technology, and more specifically, to a multi-band solar spectrum generating device and method. Background Art

[0002] Solar simulators are man-made devices that simulate sunlight. They are widely used in photovoltaics, automobiles, aerospace and other fields. They mainly include light sources, optical integrators, collimators and spectrum correctors. The spectrum of the sun is very wide, and it is not realistic to fully simulate the solar spectrum. At present, the demand for the solar spectrum is mainly concentrated in the visible light band, so there are many studies on visible light solar simulators.

[0003] The light sources used in solar simulators mainly include thermal light sources represented by halogen tungsten lamps, high-pressure gas discharge light sources represented by xenon lamps, and LED light sources. The main spectral radiation of halogen tungsten lamps is concentrated in the short-wave infrared band, with a continuous and stable luminous spectrum and high luminous intensity, but it has the disadvantages of low matching with the solar spectrum, narrow brightness adjustment range, low luminous efficiency and short service life. Xenon lamps are a type of gas discharge lamp, which mainly ionizes gas to produce arc light through the high voltage generated instantly. The biggest advantage of xenon lamps is that their color temperature is around 6000K, which is highly matched with the solar spectrum. In addition, xenon lamps have the advantages of strong brightness, high luminous efficiency and suitability for making large-area solar simulators. However, xenon lamps require ultra-high voltage to start, which is dangerous, and there are many peaks in the spectrum of xenon lamps that deviate from the solar spectrum, which will make the filter structure complicated. Since there are mature LED products with different wavelengths, using LED as the light source of solar simulators can achieve a large spectral simulation range, long life and safe and reliable use. However, the spectrum of a single LED is very narrow. In order to simulate a band of solar spectrum, many LED light sources with different wavelengths are needed, which makes the driving power supply and light mixing system more complicated. In order to study the impact of sunlight on the background noise of the detector, it is necessary to simulate as many solar bands as possible. At present, the simulation of the solar spectrum only includes the visible light to near-infrared band (300nm ~ 1100nm). Summary of the invention

[0004] The present invention provides a multi-band solar spectrum generating device and method to solve at least one of the problems existing in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A first aspect of the present invention provides a multi-band solar spectrum generating device, the device comprising a light source module, a collimation calibration module and a beam combining module, wherein:

[0007] The light source module is used to emit light beams of multiple different wavelength bands;

[0008] The collimation calibration module is used to collimate and calibrate the light beams of the multiple different wavebands respectively;

[0009] The beam combining module is used to combine and output a plurality of collimated and calibrated light beams of different wavelength bands.

[0010] Optionally, the light source module includes a medium-wave blackbody light source, a long-wave blackbody light source and a xenon lamp light source, wherein:

[0011] The medium-wave blackbody light source is used to emit a medium-wave infrared radiation beam;

[0012] The long-wave blackbody light source is used to emit a long-wave infrared radiation beam;

[0013] The xenon lamp light source is used to emit a visible light beam.

[0014] Optionally, the collimation calibration module includes a medium-wave collimation calibration lens, a long-wave collimation calibration lens and a visible light collimation calibration lens, wherein:

[0015] The medium-wave collimation calibration lens is used to collimate the medium-wave infrared radiation beam;

[0016] The long-wave collimation calibration lens is used to collimate the long-wave infrared radiation beam;

[0017] The visible light collimating and calibration lens is used to collimate the visible light beam.

[0018] Optionally, the medium-wave collimating calibration lens comprises a lens body and a first film layer with high and low refractive indices arranged alternately and coated on a substrate of the lens body, and is used to calibrate the spectrum of the medium-wave infrared radiation beam;

[0019] The long-wave collimating calibration lens comprises a lens body and a second film layer with high and low refractive indexes alternately arranged and coated on a substrate of the lens body, and is used to calibrate the spectrum of the long-wave infrared radiation beam;

[0020] The visible light collimating and calibrating lens has a dielectric film layer plated on optical glass and is used to calibrate the spectrum of the visible light beam.

[0021] Optionally, the output module includes a first beam combiner and a second beam combiner,

[0022] The first beam combiner is used to transmit the collimated and calibrated medium-wave infrared radiation beam, reflect the collimated and calibrated long-wave infrared radiation beam, combine the medium-wave infrared radiation beam and the long-wave infrared radiation beam, and output the combined beams;

[0023] The second beam combiner is used to transmit the combined medium-wave infrared radiation beam and the long-wave infrared radiation beam, reflect the collimated and calibrated visible light beam, and combine the collimated and calibrated visible light beam, the medium-wave infrared radiation beam and the long-wave infrared radiation beam for output.

[0024] Optionally, the spectrum of the collimated medium-wave infrared radiation beam is

[0025] O1(λ1)=M1(λ1)×T2(λ1)×T7(λ1)×T8(λ1,λ2),

[0026] The spectrum of the collimated long-wave infrared radiation beam is:

[0027] O2(λ2)=M2(λ2)×T4(λ2)×R7(λ2)×T8(λ1,λ2),

[0028] The spectrum of the collimated visible light is

[0029] O3(λ3)=M3(λ3)×T6(λ3)×R8(λ3),

[0030] Among them, O1(λ1) is the spectrum of the collimated and calibrated medium-wave infrared radiation beam, O2(λ2) is the spectrum of the collimated and calibrated long-wave infrared radiation beam, O3(λ3) is the spectrum of the collimated and calibrated visible light, M1(λ1) is the spectrum of the medium-wave infrared radiation beam emitted by the medium-wave blackbody light source, M2(λ2) is the spectrum of the long-wave infrared radiation beam emitted by the long-wave blackbody light source, M3(λ3) is the spectrum of the visible light beam emitted by the xenon light source, T2(λ1) is the transmittance of the medium-wave collimating calibration lens, T4(λ2) is the transmittance of the long-wave collimating calibration lens, T6(λ3) is the transmittance of the visible light collimating calibration lens, T7(λ1) is the transmittance of the first beam combiner, R7(λ2) is the reflectivity of the first beam combiner, T8(λ1,λ2) is the transmittance of the second beam combiner, and R8(λ3) is the reflectivity of the second beam combiner.

[0031] Optionally, the optical axis of the long-wave blackbody light source is arranged perpendicularly to the optical axis of the medium-wave blackbody light source, and the optical axis of the xenon lamp light source is arranged perpendicularly to the optical axis of the medium-wave blackbody light source;

[0032] The first beam combiner is placed with an optical axis tilted at 45° based on the medium-wave blackbody light source, and is coated with a dielectric film layer that transmits the medium-wave infrared radiation beam and a dielectric film layer that reflects the long-wave infrared radiation beam.

[0033] Optionally, the optical axis of the long-wave blackbody light source is arranged perpendicularly to the optical axis of the medium-wave blackbody light source, and the optical axis of the xenon lamp light source is arranged perpendicularly to the optical axis of the medium-wave blackbody light source;

[0034] The second beam combiner is placed with an optical axis tilted at 45° based on the medium-wave blackbody light source, and is coated with a dielectric film layer that transmits the medium-wave infrared radiation beam and the long-wave infrared radiation beam, and a dielectric film layer that reflects the visible light beam.

[0035] A second aspect of the present invention provides a method for generating a multi-band solar spectrum, the method comprising:

[0036] Multiple light beams of different wavelength bands are emitted through light source modules of different wavelengths;

[0037] Collimate and calibrate the light beams in different wavelength bands to match the solar spectrum;

[0038] The collimated and calibrated beams of multiple different wavelength bands are combined and output.

[0039] Optionally, the step of combining and outputting a plurality of collimated and calibrated light beams of different wavelength bands comprises:

[0040] The medium-wave blackbody radiation beam and the long-wave blackbody radiation beam are combined by a first beam combiner, and the medium visible light beam, the medium-wave blackbody radiation beam and the long-wave blackbody radiation beam are combined by a second beam combiner and then output.

[0041] The beneficial effects of the present invention are as follows:

[0042] The present invention uses a xenon lamp light source to generate a visible light beam, and uses two black body light sources with different temperatures to generate a medium-wave infrared radiation beam and a long-wave infrared radiation beam respectively. The light beams of multiple different bands emitted by different light source modules are collimated and spectrally calibrated through three collimating calibration lenses coated with multi-layer dielectric films to achieve matching with the solar spectrum, and the collimated and calibrated multi-band solar spectrum is output after beam combination through two beam combiners. The present invention realizes the simulation of the solar spectrum of the visible light band, the medium-wave infrared radiation band and the long-wave infrared radiation band, has a simple structure, reduces energy loss, and solves the problem of multi-band solar spectrum simulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0044] Figure 1 A schematic diagram showing the principle of the multi-band solar spectrum generating device of the present invention;

[0045] Figure 2 A schematic diagram showing an application scenario of the multi-band solar spectrum generating device of the present invention. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with preferred embodiments and accompanying drawings. Similar components in the accompanying drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0047] The present invention provides a multi-band solar spectrum simulation device and method, which realizes the simulation of solar spectra in the visible light band (400nm-700nm), medium-wave infrared band (3000nm-5000nm) and long-wave infrared band (8000nm-12000nm), solves the difficult problem of simulating solar spectra in multiple bands, and lays a foundation for studying the evaluation of the impact of sunlight on multi-band detector noise.

[0048] The device includes a light source module, a collimation and calibration module and a beam combining module. The light source module is used to emit a plurality of light beams of different bands according to light sources of different temperatures; the collimation and calibration module is used to respectively collimate and calibrate the light beams of the plurality of different bands to achieve matching with the solar spectrum; the beam combining module includes a first beam combiner and a second beam combiner, which are used to combine the light beams of the plurality of different bands after collimation and calibration and then output them.

[0049] like Figure 1 As shown, the light source module includes a medium-wave blackbody light source 1, a long-wave blackbody light source 3 and a xenon lamp light source 5, the collimation and calibration module includes a medium-wave collimation and calibration lens 2, a long-wave collimation and calibration lens 4 and a visible light collimation and calibration lens 6, and the beam combining module includes a first beam combiner 7 and a second beam combiner 8.

[0050] The present invention takes the optical axis of the outgoing light beam of the medium-wave blackbody light source 1 as a reference, sets the medium-wave collimating calibration lens 2 along the optical axis of the medium-wave blackbody light source 1, the first beam combiner 7 is set at a 45° tilt based on the optical axis of the medium-wave blackbody light source 1, and the second beam combiner 8 is set at a 45° tilt based on the optical axis of the medium-wave blackbody light source 1; the optical axis of the outgoing light beam of the long-wave blackbody light source 3 is set perpendicular to the optical axis of the medium-wave blackbody light source 1, and the long-wave collimating calibration lens 4 is set along the optical axis of the long-wave blackbody light source 3; the optical axis of the outgoing light beam of the xenon light source 5 is set perpendicular to the optical axis of the medium-wave blackbody light source 1, and the visible light collimating calibration lens 6 is set along the optical axis of the xenon light source 5. The arrangement of each light source, each collimating calibration lens and two beam combiners in the present invention is only exemplary, and can also be set in other ways.

[0051] The medium-wave blackbody light source 1 is used to emit a medium-wave infrared radiation beam; the medium-wave collimating calibration lens 2 collimates the transmitted medium-wave infrared radiation beam, and the medium-wave collimating calibration lens 2 includes a lens body and a first film layer with high and low refractive indices arranged alternately coated on the base of the medium-wave collimating calibration lens 2, which is used to calibrate the spectrum of the medium-wave infrared radiation beam to achieve matching with the solar spectrum. The long-wave blackbody light source 3 is used to emit a long-wave infrared radiation beam; the long-wave collimating calibration lens 4 collimates the transmitted long-wave infrared radiation beam, and the long-wave collimating calibration lens 4 includes a lens body and a second film layer with high and low refractive indices arranged alternately coated on the base of the long-wave collimating calibration lens 4, which is used to calibrate the spectrum of the long-wave infrared radiation beam to achieve matching with the solar spectrum. The first beam combiner 7 is placed at an angle of 45° based on the optical axis of the medium-wave blackbody light source 1, and is coated with a transmission film on the surface close to the medium-wave blackbody light source 1, and a reflection film on the surface away from the medium-wave blackbody light source 1, for transmitting the collimated and calibrated medium-wave infrared radiation beam and reflecting the collimated and calibrated long-wave infrared radiation beam, and outputting a combined beam 12 of the medium-wave infrared radiation beam and the long-wave infrared radiation beam. The xenon light source 5 is used to emit a visible light beam; the visible light collimation and calibration lens 6 collimates the transmitted visible light beam, and a dielectric film layer is coated on the optical glass of the xenon light source 5 for calibrating the spectrum of the visible light beam to achieve matching with the solar spectrum. The second beam combiner 8 is placed at an angle of 45° based on the optical axis of the medium-wave blackbody light source 1. A transmissive film is coated on the surface close to the medium-wave blackbody light source 1, and a reflective film is coated on the surface away from the medium-wave blackbody light source 1. The second beam combiner 8 is used to transmit the combined beam 12 of the medium-wave infrared radiation beam and the long-wave infrared radiation beam and reflect the collimated and calibrated visible light beam, and output a combined beam 13 of the visible light beam, the medium-wave infrared radiation beam and the long-wave infrared radiation beam.

[0052] In a specific embodiment, the medium-wave blackbody light source 1 is a first cavity blackbody, which generates a medium-wave infrared radiation beam, and its spectral radiation is in the range of 3000nm-5000nm; the medium-wave collimation calibration lens 2 is coated with a first dielectric film layer with high and low refractive indexes arranged alternately on a Si substrate to calibrate the spectrum of the medium-wave infrared radiation beam. The Si material can transmit the spectrum of the medium-wave infrared radiation beam and cut off the spectrum of the long-wave infrared radiation beam, which can effectively avoid the interference of the long-wave signal generated by the medium-wave blackbody light source 1 on the output beam spectrum. In addition, the medium-wave collimation calibration lens 2 collimates the light beam generated by the medium-wave blackbody light source 1 to avoid the problem of reduced energy density of the output beam due to a large aperture, and effectively improves the radiation intensity of the medium-wave infrared radiation band.

[0053] The long-wave blackbody light source 3 is a second cavity blackbody, which generates a long-wave infrared radiation beam, and its spectral radiation is in the range of 8000nm-12000nm; the long-wave collimation calibration lens 4 is coated with a second film layer with high and low refractive indexes arranged alternately on the Ge substrate to calibrate the spectrum of the long-wave infrared radiation beam. In addition, the long-wave collimation calibration lens 4 collimates the light beam generated by the long-wave blackbody light source 3, avoiding the problem of reduced energy density of the output light beam due to a large aperture, and effectively improving the radiation intensity of the long-wave infrared radiation band.

[0054] The first beam combiner 7 is a beam combiner that transmits the spectrum of the collimated and calibrated medium-wave infrared radiation beam and reflects the spectrum of the collimated and calibrated long-wave infrared radiation beam. The first beam combiner 7 is placed at an angle of 45° based on the medium-wave blackbody light source 1. The material of the first beam combiner 7 is Si material, which can transmit the spectrum of the collimated and calibrated medium-wave infrared radiation beam and cut off the spectrum of the long-wave infrared radiation beam. The surface of the first beam combiner 7 close to the medium-wave blackbody light source 1 is coated with a dielectric film layer that transmits the medium-wave infrared radiation beam, and the surface of the first beam combiner 7 far from the medium-wave blackbody light source 1 is coated with a dielectric film layer that reflects the long-wave infrared radiation beam, so as to further improve the transmittance of the medium-wave infrared radiation beam and the reflectivity of the long-wave infrared radiation beam, reduce energy loss, and realize the synthesis of the medium-wave infrared radiation beam and the long-wave infrared radiation beam.

[0055] The xenon lamp light source 5 is used to emit a visible light beam, and its spectrum is within the range of 400nm-700nm; the visible light collimating calibration lens 6 has a dielectric film layer coated on its optical glass, which is used to calibrate the spectrum of the visible light beam to achieve matching with the solar spectrum. In addition, the visible light collimating calibration lens 6 collimates the visible light beam generated by the xenon lamp light source 5 to avoid the problem of reduced output light beam energy density caused by a large aperture.

[0056] The second beam combiner 8 is a beam combiner that transmits the collimated and calibrated medium-wave infrared radiation beam and the long-wave infrared radiation beam and reflects the collimated and calibrated visible light beam. The second beam combiner 8 is placed at an angle of 45° based on the medium-wave blackbody light source 1. The material of the second beam combiner 8 is Ge material. The surface of the second beam combiner 8 close to the medium-wave blackbody light source 1 is coated with a dielectric film layer that transmits the medium-wave infrared radiation beam and the long-wave infrared radiation beam, and the surface away from the medium-wave blackbody light source 1 is coated with a dielectric film layer that reflects the visible light beam. The second beam combiner 8 is used to transmit the medium-wave infrared radiation beam and the long-wave infrared radiation beam, and reflect the collimated and calibrated visible light beam, so as to further improve the transmittance of the medium-wave infrared radiation beam and the long-wave infrared radiation beam and the reflectivity of the visible light beam, reduce energy loss, and realize the synthesis of the visible light beam, the medium-wave infrared radiation beam and the long-wave infrared radiation beam.

[0057] The combined beam 13 of the medium-wave infrared radiation beam, the long-wave infrared radiation beam and the visible light beam output by the second beam combiner 8 is a collimated beam, and its spectrum has a high similarity to the sunlight spectrum. In the spectrum output by the combined beam, the spectrum of the collimated medium-wave infrared radiation beam is

[0058] O1(λ1)= M1(λ1)×T2(λ1)×T7(λ1)×T8(λ1, λ2) (1)

[0059] Among them, O1(λ1) is the spectrum of the medium-wave infrared radiation beam after collimation and calibration, M1(λ1) is the spectrum of the medium-wave infrared radiation beam emitted by the medium-wave blackbody light source, T2(λ1) is the transmittance of the medium-wave collimation calibration lens, T7(λ1) is the transmittance of the first beam combiner, and T8(λ1,λ2) is the transmittance of the second beam combiner.

[0060] In the spectrum of the combined output, the spectrum of the collimated long-wave infrared radiation beam is

[0061] O2(λ2)=M2(λ2)×T4(λ2)×R7(λ2)×T8(λ1, λ2) (2)

[0062] Among them, O2(λ2) is the spectrum of the long-wave infrared radiation beam after collimation and calibration, M2(λ2) is the spectrum of the long-wave infrared radiation beam emitted by the long-wave blackbody light source, T4(λ2) is the transmittance of the long-wave collimation calibration lens, and R7(λ2) is the reflectivity of the first beam combiner.

[0063] In the spectrum of the combined output, the spectrum of the collimated visible light beam is

[0064] O3(λ3)=M3(λ3)×T6(λ3)×R8(λ3) (3)

[0065] Among them, O3(λ3) is the spectrum of the visible light beam after collimation and calibration, M3(λ3) is the spectrum of the visible light beam emitted by the xenon lamp light source, T6(λ3) is the transmittance of the visible light collimation and calibration lens, and R8(λ3) is the reflectivity of the second beam combiner.

[0066] In this embodiment, the medium-wave infrared radiation beam, the long-wave infrared radiation beam and the visible light beam are respectively collimated and calibrated by corresponding collimating calibration lenses, and then combined by a beam combiner through transmission or reflection. The spectrum of the output light beam after combining is more accurate and close to the solar spectrum, further improving its matching degree with the solar spectrum.

[0067] In a specific embodiment, according to Figure 2The solar simulator includes a power supply system, a control system and a three-band solar spectrum generating device. The three-band solar spectrum after being output and combined by the solar simulator is transmitted to the reflector through a window in a cooling environment and then enters the detector through the reflector. The two-dimensional follow-up device adjusts the angle between the light beam and the detector by controlling the angle of the reflector to achieve sunlight incident on the detector at different angles. The influence of the light beam on the detector noise is simulated in the detector, thereby studying the influence of the solar spectrum on the detector noise.

[0068] The present invention uses collimating calibration lenses of different bands to collimate the divergent light source into a parallel light beam to make the device more compact, and also plates a dielectric film layer on the substrate of the collimating calibration lens to achieve calibration of the light beam spectrum, reduce energy loss, avoid the problem of reduced output light beam energy density caused by large aperture, and solve the problem of multi-band solar spectrum simulation.

[0069] The present invention also provides a multi-band solar spectrum generation method, which includes respectively emitting a medium-wave infrared radiation beam, a long-wave infrared radiation beam and a visible light beam through a medium-wave blackbody light source 1, a long-wave blackbody light source 3 and a xenon lamp light source 5, collimating and calibrating the beams of different wavelengths to achieve matching of the solar spectrum, combining the collimated and calibrated medium-wave infrared radiation beam and the long-wave infrared radiation beam through a first beam combiner 7, and combining the beam output by the first beam combiner 7 and the collimated and calibrated visible light beam through a second beam combiner 8 and outputting them.

[0070] In a specific embodiment, the peak value of the radiation spectrum of the medium-wave blackbody light source 1 is between 3000nm-5000nm, the peak value of the radiation spectrum of the long-wave blackbody light source 3 is between 8000nm-12000nm, and the spectrum of the visible light beam emitted by the xenon lamp light source 5 has a good similarity to the solar spectrum. Therefore, the visible light beam emitted by the xenon lamp light source 5 is used to simulate the solar spectrum of 400nm-700nm.

[0071] A medium-wave blackbody light source 1 emits a medium-wave infrared radiation beam, which passes through a medium-wave collimating and calibrating lens 2 to obtain a collimated and calibrated medium-wave infrared radiation beam 9, which passes through a first beam combiner 7; a long-wave blackbody light source 3 emits a long-wave infrared radiation beam, which passes through a long-wave collimating and calibrating lens 4 to obtain a collimated and calibrated long-wave infrared radiation beam 10, which is reflected by the first beam combiner 7 and combined with the collimated and calibrated medium-wave infrared radiation beam 9 to form a medium-wave infrared radiation beam. The combined beam 12 of the external radiation beam and the long-wave infrared radiation beam, and the combined beam 12 of the medium-wave infrared radiation beam and the long-wave infrared radiation beam pass through the second beam combiner 8; the xenon lamp light source 5 emits a visible light beam, which passes through the visible light collimating and calibration lens 6 to obtain a collimated visible light beam 11, and the collimated visible light beam 11 is reflected by the second beam combiner 8, and then combined with the combined beam 12 of the medium-wave infrared radiation beam and the long-wave infrared radiation beam to form a combined beam 13 of the visible light beam, the medium-wave infrared radiation beam and the long-wave infrared radiation beam, and then output.

[0072] The present invention realizes the simulation of the solar spectrum of the visible light beam band, the medium-wave infrared radiation beam band and the long-wave infrared radiation beam band, and solves the difficult problem of multi-band solar spectrum simulation.

[0073] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0074] It should also be noted that, in the description of 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 "comprise", "include" 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, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0075] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A multi-band solar spectrum generating device, characterized in that: The device includes a light source module, a collimation calibration module and a beam combining module, wherein: The light source module is used to emit light beams of multiple different wavelength bands; The collimation calibration module is used to collimate and calibrate the light beams of the multiple different wavebands respectively; The beam combining module is used to combine and output a plurality of collimated and calibrated light beams of different wavelength bands.

2. The device according to claim 1, characterized in that The light source module includes a medium-wave blackbody light source, a long-wave blackbody light source and a xenon lamp light source, wherein: The medium-wave blackbody light source is used to emit a medium-wave infrared radiation beam; The long-wave blackbody light source is used to emit a long-wave infrared radiation beam; The xenon lamp light source is used to emit a visible light beam.

3. The device according to claim 2, characterized in that The collimation calibration module includes a medium-wave collimation calibration lens, a long-wave collimation calibration lens and a visible light collimation calibration lens, wherein: The medium-wave collimation calibration lens is used to collimate the medium-wave infrared radiation beam; The long-wave collimation calibration lens is used to collimate the long-wave infrared radiation beam; The visible light collimating and calibration lens is used to collimate the visible light beam.

4. The device according to claim 3, characterized in that The medium-wave collimating calibration lens comprises a lens body and a first film layer with high and low refractive indexes alternately arranged and coated on a substrate of the lens body, and is used to calibrate the spectrum of the medium-wave infrared radiation beam; The long-wave collimating calibration lens comprises a lens body and a second film layer with high and low refractive indexes alternately arranged and coated on a substrate of the lens body, and is used to calibrate the spectrum of the long-wave infrared radiation beam; The visible light collimating and calibrating lens has a dielectric film layer plated on optical glass and is used to calibrate the spectrum of the visible light beam.

5. The device according to claim 1, characterized in that The output module includes a first beam combiner and a second beam combiner, The first beam combiner is used to transmit the collimated and calibrated medium-wave infrared radiation beam, reflect the collimated and calibrated long-wave infrared radiation beam, combine the medium-wave infrared radiation beam and the long-wave infrared radiation beam, and output the combined beams; The second beam combiner is used to transmit the combined medium-wave infrared radiation beam and the long-wave infrared radiation beam, reflect the collimated and calibrated visible light beam, and combine the collimated and calibrated visible light beam, the medium-wave infrared radiation beam and the long-wave infrared radiation beam for output.

6. The device according to claim 5, characterized in that The spectrum of the collimated medium-wave infrared radiation beam is: O1(λ1)=M1(λ1)×T2(λ1)×T7(λ1)×T8(λ1,λ2), The spectrum of the collimated long-wave infrared radiation beam is: O2(λ2)=M2(λ2)×T4(λ2)×R7(λ2)×T8(λ1,λ2), The spectrum of the collimated visible light is O3(λ3)=M3(λ3)×T6(λ3)×R8(λ3), Among them, O1(λ1) is the spectrum of the collimated and calibrated medium-wave infrared radiation beam, O2(λ2) is the spectrum of the collimated and calibrated long-wave infrared radiation beam, O3(λ3) is the spectrum of the collimated and calibrated visible light, M1(λ1) is the spectrum of the medium-wave infrared radiation beam emitted by the medium-wave blackbody light source, M2(λ2) is the spectrum of the long-wave infrared radiation beam emitted by the long-wave blackbody light source, M3(λ3) is the spectrum of the visible light beam emitted by the xenon light source, T2(λ1) is the transmittance of the medium-wave collimating calibration lens, T4(λ2) is the transmittance of the long-wave collimating calibration lens, T6(λ3) is the transmittance of the visible light collimating calibration lens, T7(λ1) is the transmittance of the first beam combiner, R7(λ2) is the reflectivity of the first beam combiner, T8(λ1,λ2) is the transmittance of the second beam combiner, and R8(λ3) is the reflectivity of the second beam combiner.

7. The device according to claim 5, characterized in that The optical axis of the long-wave blackbody light source is arranged perpendicularly to the optical axis of the medium-wave blackbody light source, and the optical axis of the xenon lamp light source is arranged perpendicularly to the optical axis of the medium-wave blackbody light source; The first beam combiner is placed with an optical axis tilted at 45° based on the medium-wave blackbody light source, and is coated with a dielectric film layer that transmits the medium-wave infrared radiation beam and a dielectric film layer that reflects the long-wave infrared radiation beam.

8. The device according to claim 5, characterized in that The optical axis of the long-wave blackbody light source is arranged perpendicularly to the optical axis of the medium-wave blackbody light source, and the optical axis of the xenon lamp light source is arranged perpendicularly to the optical axis of the medium-wave blackbody light source; The second beam combiner is placed with an optical axis tilted at 45° based on the medium-wave blackbody light source, and is coated with a dielectric film layer that transmits the medium-wave infrared radiation beam and the long-wave infrared radiation beam, and a dielectric film layer that reflects the visible light beam.

9. A method for generating a solar spectrum according to the multi-band solar spectrum generating device according to any one of claims 1 to 8, characterized in that: The method includes Multiple light beams of different wavelength bands are emitted through light source modules of different wavelengths; Collimate and calibrate the light beams in different wavelength bands to match the solar spectrum; The collimated and calibrated beams of multiple different wavelength bands are combined and output.

10. The method according to claim 9, characterized in that The step of combining and outputting a plurality of collimated and calibrated light beams of different wavelength bands comprises: The medium-wave blackbody radiation beam and the long-wave blackbody radiation beam are combined by a first beam combiner, and the medium visible light beam, the medium-wave blackbody radiation beam and the long-wave blackbody radiation beam are combined by a second beam combiner and then output.

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