Light source system

Abstract

A light source system comprises: a xenon lamp; an elliptical reflector; a first plane mirror; a light homogenizer; a second plane mirror; an optical lens; a power supply; an aperture; a photoelectric sensor; the first driving device is connected with the xenon lamp or the elliptical reflecting mirror; the second driving device is connected with the aperture; the control device is connected with the photoelectric sensor, the power supply, the first driving device and the second driving device; wherein the control device is used for controlling the power supply, the first driving device and the second driving device according to the property of the simulation light source sensed by the photoelectric sensor. The light source system is suitable for providing a simulation light source with intensity, stability, uniformity and spectrum similar to those of sunlight.

Description

Technical Field

[0001] The present invention relates to a light source system, in particular to a light source system comprising a control device. Background Art

[0002] Global climate change has become a crisis for human survival, so countries around the world have spared no effort in the development of green energy, and solar power generation plays a core role. The technology of crystalline silicon solar cells has matured, and its photoelectric conversion efficiency has faced bottlenecks in further improvement. Therefore, most scientists and R&D personnel are currently focusing on developing new solar cells with higher photoelectric conversion efficiency, such as perovskite-crystalline silicon stacked solar cells, multi-junction cells, etc.

[0003] As the type of solar cells evolves from "single-junction" cells to "stacked" and "multi-junction" cells, the demand for solar simulators that can provide a perfect AM1.5G spectrum and adjustable spectrum is increasing day by day in response to the requirements of test conditions and is gradually becoming a necessary condition.

[0004] IEC 60904 is a world-recognized international standard for the quality of solar simulators. IEC 60904 specifies three indicators for evaluating the quality of solar simulators, namely "spatial irradiance uniformity", "irradiance light intensity stability" and "spectral consistency". We often refer to these three indicators as "light uniformity", "light stability" and "spectrum".

[0005] Looking at the solar simulators of various brands currently on the market, if a product uses a single xenon lamp as a light source, its best light uniformity, light stability, and spectral performance levels are mostly at the AAA level. If it wants to achieve the A+ level, especially the "spectral consistency" indicator, none of the single xenon lamps with existing technology can currently meet this standard.

[0006] In order to achieve spectral conformity of A+ (or even better than A+) and meet the requirements for measuring stacked and multi-junction solar cells, many manufacturers have turned to developing "multi-lamp" systems. By combining two or more light sources with different wavelength ranges, and making up for their shortcomings or using wavelength splicing, the spectral conformity can reach or exceed the A+ level.

[0007] Whether it is a dual-lamp (xenon lamp + halogen lamp) solar simulator or an LED solar simulator, they are all "multi-lamp" light source systems. Although the spectrum of the multi-lamp system is adjustable, the service life of each lamp source is inconsistent, which inevitably requires frequent calibration of the system.

[0008] Take the dual lamp system (xenon lamp + halogen lamp) as an example:

[0009] For measuring solar cells, the light source must meet the IEC 60904 specification and the light intensity must reach above one sun intensity (1sun), i.e. 1000W / m 2 According to actual statistics, the usable hours of halogen lamps (QTH) are less than 50 hours. Once the hours exceed 50, although the bulbs will still light up, the irradiation intensity of the dual-lamp system will not reach 1000W / m 2 standards, so new lamps need to be replaced frequently.

[0010] Let’s take the LED light source system as an example:

[0011] Although the lifespan of LED light sources is said to be "tens of thousands of hours", this can only be achieved under the premise of an appropriate junction temperature (Tj), for example: Tj < 85°C or Tj < 105°C. Once the use conditions cause Tj to be too high, the lifespan of the LED will decline rapidly or even burn out. This is why the LED light source system must be equipped with a cooling module for the LED light board. We have tested many commercially available LED solar simulators, all of which claim that their irradiance specifications are greater than 1.2sun (i.e. greater than 1200W / m 2 ), but we found that: within 1500 hours, the maximum light intensity could not exceed 1000W / m 2 To comply with the IEC light intensity specification, the LED lamp beads need to be overloaded (over-drive), which undoubtedly worsens the use conditions of the LED light source and increases the risk of Tj being too high.

[0012] Furthermore, the LED light source system is composed of many LED lamp beads with different wavelengths. In short, the aging speed of RGB LED lamp beads is different. After lighting, they must face dynamic changes with different decay speeds. From many usage experiences, it is found that their long-term spectral stability is not good.

[0013] Finally, through market research, it is found that when the performance of LED light sources / lamp boards declines, it is very difficult to repair a single lamp bead, and the entire group can only be replaced. In addition, the cost of LED light sources / lamp boards accounts for 40% to 50% of the entire LED simulator system, resulting in users having to bear extremely high cost pressure.

[0014] It can be seen that the dual-lamp system solar simulator and the LED light source system solar simulator each have their own insurmountable product weaknesses. Therefore, there is a need to develop a novel light source system to solve the above problems. Summary of the invention

[0015] The technical problem to be solved by the present invention is to provide a light source system to address the deficiencies of the prior art.

[0016] The innovation of the present invention lies in that, by utilizing the coating design on the optical element, the reflection and transmission spectra of the optical element will change significantly with the different angles of the incident light, thereby achieving the purpose of using a single bulb light source, adjusting the spatial position and angle of the optical components, and changing the spectrum output by the solar simulator.

[0017] Although it is known that the reflectivity spectrum changes with the incident angle, there are infinite possibilities for what kind of coating material and optical path design, optical component selection, and the control range of the spatial position and angle of optical components. Non-obvious designs and combinations can achieve the requirements of the output performance of the 3A solar simulator light source (IEC60904-9:2017; light intensity 1000W / m 2 , spatial irradiation non-uniformity <2%, light intensity instability <1%; the spectrum can reach the matching degree of IEC 60904-3).

[0018] like Figure 1 As shown, the phenomenon that the spectrum is changed when the incident angle is different (which can be used for the homogenizer and optical lens in the present invention) is used in the design of a solar simulator to achieve an innovative device with a single light source and adjustable spectrum.

[0019] Figure 1 The transmission spectra of the designed optical film at 0 and 45 degree incident angles are shown in the figure. It can be clearly seen that the spectrum at 45 degree incident angle has a significant "blue shift" phenomenon (the peak value is blue-shifted from 550nm to 500nm).

[0020] like Figure 2 and Figure 3 As shown, by utilizing the design of the reflective coating of the reflector (film thickness, material) and controlling the angle of the incident light, the spectrum of the reflected light can be adjusted. This can be used in the design of a solar simulator to achieve an innovative device with a single light source and adjustable spectrum.

[0021] like Figure 2 As shown, the optical coating thickness of the optical reflector (elliptical reflector, plane reflector) can change the optical reflectivity of different bands (ie, the intensity of reflected light in each band).

[0022] like Figure 3 As shown, changing the angle of the incident light can change the optical reflectance spectrum in different bands (reference: DOI: 10.1109 / JPHOT.2013.2278983).

[0023] The technical solution adopted by the present invention utilizes screened (specific) optical elements (lenses, reflectors), applies specific optical coating treatment (film thickness, material), and uses a specific optical element combination (short arc xenon lamp, elliptical reflector, first reflector, mechanical aperture, homogenizer (device), second reflector, optical lens) and utilizes a driving device (the first to nth driving devices) to control the angle of the xenon lamp light beam incident on each optical element. The spectrum is modulated after changing the reflection (or transmission) at different angles, and then the light beam quality (spectrum, uniformity, light intensity) output by the entire solar simulator is adjusted and controlled to meet the requirements of the solar simulator required by the IEC60904-9 international standard.

[0024] The optical coating material mentioned above can be metal oxides, dielectric materials such as tantalum pentoxide (Ta2O5) and / or aluminum oxide (Aluminum Oxide (Al2O3)), and metal materials, as shown in Table 1 below.

[0025] Table 1

[0026] Common metal coating materials gold silver aluminum <![CDATA[MgF2]]> Rhodium (Rh) Nickel (EN)

[0027] The above-mentioned number of layers can be a single layer or a combination of multiple layers of different materials.

[0028] The above-mentioned coating method can be evaporation deposition, ion beam sputtering (IBS), plasma sputtering, atomic layer deposition, sub-wavelength structure surface or a mixed coating of the above methods.

[0029] In order to solve the above technical problems, one of the technical solutions adopted by the present invention is a light source system, which includes:

[0030] A xenon lamp;

[0031] an elliptical reflector disposed at a position adjacent to the xenon lamp to reflect the light source emitted by the xenon lamp;

[0032] a light homogenizer disposed on the path of the light source reflected by the elliptical reflector;

[0033] an optical lens disposed on the path of the light source homogenized by the light homogenizer to refract the light source to output a simulated light source;

[0034] a power supply electrically connected to the xenon lamp;

[0035] a first driving device connected to the xenon lamp or the elliptical reflector to drive the xenon lamp or the elliptical reflector to change the relative position between the xenon lamp and the elliptical reflector; and

[0036] a control device connected to the power supply and the first driving device;

[0037] The control device controls the power supply and the first driving device according to the properties of the simulated light source.

[0038] The above light source system may further include:

[0039] a first plane reflector disposed on the path of the light source reflected by the elliptical reflector to reflect the light source reflected by the elliptical reflector to the light homogenizer, the light homogenizer being disposed on the path of the light source reflected by the first plane reflector;

[0040] a second plane reflector disposed on the path of the light source homogenized by the light homogenizer to reflect the light source homogenized by the light homogenizer to the optical lens, the optical lens being disposed on the path of the light source reflected by the second plane reflector;

[0041] an aperture, disposed between the first plane reflector and the light homogenizer;

[0042] a photoelectric sensor disposed on a path of the light source refracted by the optical lens; and

[0043] a second driving device connected to the aperture to control the size of the aperture;

[0044] The control device controls the power supply, the first driving device and the second driving device according to the property of the simulated light source sensed by the photoelectric sensor.

[0045] In the above light source system, a surface of at least one of the elliptical reflector, the first plane reflector, the light homogenizer and the second plane reflector may have a coating.

[0046] In the above light source system, the coating layer can be selected from the group consisting of aluminum reflection film, silver reflection film, gold reflection film, multi-layer dielectric film and special coating film.

[0047] In the above light source system, the thickness of the coating layer may be between 1 nm and 150 μm.

[0048] The above light source system may further include:

[0049] A third driving device is connected to the first plane reflector to control the angle between the first plane reflector and the incident light source.

[0050] The above light source system may further include:

[0051] A fourth driving device is connected to the light homogenizer to control the angle between the light homogenizer and the incident light source.

[0052] The above light source system may further include:

[0053] A fifth driving device is connected to the second plane reflector to control the angle between the first plane reflector and the incident light source.

[0054] In the above light source system, the curvature of the elliptical reflector may be between 1.4 and 2.25. The curvature of the elliptical reflector is defined as the distance from the opening of the elliptical reflector to the focus divided by the opening diameter of the elliptical reflector.

[0055] In the above light source system, the first driving device can drive the xenon lamp or the elliptical reflector to move up and down by 10 mm along a z direction.

[0056] The above-mentioned light source system, wherein, through the control of the control device, the output power of the power supply can be between 20% and 100% of its maximum output power, and through the control of the control device, the size of the aperture opening can be between 0% and 100% of its maximum value.

[0057] Therefore, the light source system of the present invention can continuously and stably provide a simulated light source with an intensity and spectrum close to that of sunlight.

[0058] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 Schematic diagram of the changes in the penetration spectrum caused by different incident angles;

[0060] Figure 2 A schematic diagram showing the effect of different optical coating thicknesses on optical reflectivity in different wavelength bands;

[0061] Figure 3 Schematic diagram of the effect of different incident light angles on optical reflectance spectra in different wavelength bands;

[0062] Figure 4 is a schematic diagram of a light source system according to Embodiment 1 of the present invention;

[0063] Figure 5 Schematic diagram of a light source system according to Embodiment 2 of the present invention.

[0064] Reference numerals

[0065] 100 Light source system

[0066] 101 Xenon lamp

[0067] 102 Elliptical reflector

[0068] 104 Homogenizer

[0069] 106 Optical lens

[0070] 107 Power Supply

[0071] 110 First drive device

[0072] 112 Control Devices

[0073] 120 Simulated light sources

[0074] 200 Light source system

[0075] 201 Xenon lamp

[0076] 202 Elliptical Reflector

[0077] 203 First plane reflector

[0078] 204 Homogenizer

[0079] 205 Second plane reflector

[0080] 206 Optical lens

[0081] 207 Power Supply

[0082] 208 Aperture

[0083] 209 Photoelectric sensor

[0084] 210 First drive device

[0085] 211 Second drive device

[0086] 212 Control Device

[0087] 220 Simulated light source DETAILED DESCRIPTION

[0088] The following is an explanation of the implementation of the light source system disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. The following implementation will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0089] Example 1

[0090] like Figure 4As shown, the light source system 100 of this embodiment includes: a xenon lamp 101 ; an elliptical reflector 102 ; a light homogenizer 104 ; an optical lens 106 ; a power supply 107 ; a first driving device 110 ; and a control device 112 .

[0091] The xenon lamp 101 is used to emit a light source.

[0092] The elliptical reflector 102 is disposed at a position adjacent to the xenon lamp 101 to reflect the light emitted by the xenon lamp 101 .

[0093] The light homogenizer 104 is disposed on the path of the light source reflected by the elliptical reflector 102 to homogenize the light source. In this embodiment, the angle between the light homogenizer 104 and the incident light is 90°, but the present invention is not limited thereto, and the angle is preferably between 85° and 95°.

[0094] The optical lens 106 is disposed on the path of the light source homogenized by the light homogenizer 104 to refract the light source to output a simulated light source 120 .

[0095] The power supply 107 is electrically connected to the xenon lamp 101 to supply power required by the xenon lamp 101 .

[0096] The first driving device 110 is connected to the xenon lamp 101 to drive the xenon lamp 101, thereby changing the relative position between the xenon lamp 101 and the elliptical reflector 102. In this embodiment, the first driving device 110 drives the xenon lamp 101 to move up and down by 10 mm along a z direction, but the present invention is not limited thereto, as long as the relative position between the xenon lamp 101 and the elliptical reflector 102 can be changed. In another embodiment, the first driving device 110 is connected to the elliptical reflector 102 to drive the elliptical reflector 102 to move up and down along a z direction, thereby changing the relative position between the xenon lamp 101 and the elliptical reflector 102.

[0097] Among them, the moving distance of the xenon lamp 101 or the elliptical reflector 102 can be between ±10mm (-10mm to +10mm). By changing the distance between the xenon lamp 101 and the elliptical reflector 102, the angle at which the light source enters the homogenizer 104 is changed, thereby changing the spectrum of the light source after homogenization. However, the present invention is not limited to this. The spatial position between the elliptical reflector 102 and the homogenizer 104 or the xenon lamp 101 and the homogenizer 104 can also be adjusted (that is, the relative position of the two in the x, y or z direction is adjusted) (this also adjusts the angle at which the light source enters the homogenizer 104).

[0098] The control device 112 is connected to the power supply 107 and the first driving device 110 .

[0099] The control device 112 controls the power supply 107 and the first driving device 110 according to the properties of the simulated light source 120 .

[0100] Specifically, the intensity of the simulated light source 120 can be sensed, and the control device 112 can adjust the output power of the power supply 107 according to the intensity of the simulated light source 120. When the intensity of the simulated light source 120 declines with the service life of the xenon lamp 101, the intensity of the simulated light source 120 can be maintained constant by instantly increasing the output power of the power supply 107. In this embodiment, the output power of the power supply is between 20% and 100% of its maximum output power through the control of the control device, but the present invention is not limited thereto.

[0101] In addition, the spectrum of the simulated light source 120 can be sensed, and the control device 112 can adjust the position of the xenon lamp 101 through the first driving device 110 according to the spectrum of the simulated light source 120. When the spectrum of the simulated light source 120 shifts from the spectrum of sunlight as the service life of the xenon lamp 101 increases, the spectrum of the simulated light source 120 can be maintained constant by adjusting the position of the xenon lamp 101 in real time.

[0102] In summary, the light source system 100 of this embodiment can make appropriate adjustments to the properties of the simulated light source 120 in real time, and continuously and stably provide the simulated light source 120 whose spectral consistency with sunlight reaches the level of A+. The light source system 100 of this embodiment has a certain degree of stability. After the light source system 100 is adjusted to the optimal state, its optimal state can be reasonably maintained for a period of time without being out of control immediately.

[0103] Example 2

[0104] like Figure 5 As shown, the light source system 200 of this embodiment includes: a xenon lamp 201; an elliptical reflector 202; a first plane reflector 203; a homogenizer 204; a second plane reflector 205; an optical lens 206; a power supply 207; an aperture 208; a photoelectric sensor 209; a first driving device 210; a second driving device 211; and a control device 212.

[0105] The xenon lamp 201 is used to emit a light source.

[0106] The elliptical reflector 202 is disposed at a position adjacent to the xenon lamp 201 to reflect the light emitted by the xenon lamp 201 .

[0107] Compared with Example 1, the light source system 200 of this embodiment further includes: a first plane reflector 203. The first plane reflector 203 is disposed on the path of the light source reflected by the elliptical reflector 202 to reflect the light source reflected by the elliptical reflector 202. In this embodiment, the angle between the first plane reflector 203 and the incident light is 45°, but the present invention is not limited thereto, and the angle is preferably between 40° and 50°.

[0108] The light homogenizer 204 is disposed on the path of the light source reflected by the first plane reflector 203 to homogenize the light source. In this embodiment, the angle between the light homogenizer 204 and the incident light is 90°, but the present invention is not limited thereto, and the angle can preferably be between 85° and 95°.

[0109] Compared with Example 1, the light source system 200 of this embodiment further includes: a second plane reflector 205. The second plane reflector 205 is disposed on the path of the light source homogenized by the light homogenizer 204 to reflect the light source homogenized by the light homogenizer 204. In this embodiment, the angle between the second plane reflector 205 and the incident light is 45°, but the present invention is not limited thereto, and the angle may preferably be between 40° and 50°.

[0110] The optical lens 206 is disposed on the path of the light source reflected by the second plane reflector 205 to refract the light source to output a simulated light source 220 .

[0111] The power supply 207 is electrically connected to the xenon lamp 201 to supply power required by the xenon lamp 201 .

[0112] Compared with the first embodiment, the light source system 200 of the present embodiment further comprises: an aperture 208. The aperture 208 is disposed between the first plane reflector 203 and the light homogenizer 204 to control the size of the light source passing through.

[0113] Compared with the first embodiment, the light source system 200 of the present embodiment further comprises: a photoelectric sensor 209 . The photoelectric sensor 209 is disposed on the path of the light source refracted by the optical lens 206 to sense the intensity and spectrum of the simulated light source 220 .

[0114] The first driving device 210 is connected to the xenon lamp 201 to drive the xenon lamp 201, thereby changing the relative position between the xenon lamp 201 and the elliptical reflector 202. In this embodiment, the first driving device 210 drives the xenon lamp 201 to move up and down by 10 mm along a z direction, but the present invention is not limited thereto. In another embodiment, the first driving device 210 is connected to the elliptical reflector 202 to drive the elliptical reflector 202 to move up and down along a z direction, thereby changing the relative position between the xenon lamp 201 and the elliptical reflector 202.

[0115] The moving distance of the xenon lamp 201 or the elliptical reflector 202 can be between ±10 mm (-10 mm to +10 mm), and the distance between the xenon lamp 201 and the first plane reflector 203 is changed, thereby changing the angle at which the light source is incident on the first plane reflector 203, thereby changing the spectrum of the light source after reflection. However, the present invention is not limited to this, and the spatial position between the elliptical reflector 202 and the first plane reflector 203 or the xenon lamp 201 and the first plane reflector 203 can also be adjusted (that is, the relative position of the two in the x, y or z direction is adjusted) (this also adjusts the angle at which the light source is incident on the first plane reflector 203).

[0116] Compared with the first embodiment, the light source system 200 of the present embodiment further comprises: a second driving device 211 . The second driving device 211 is connected to the aperture 208 to control the size of the aperture 208 .

[0117] The control device 212 is connected to the photoelectric sensor 209 , the power supply 207 , the first driving device 210 , and the second driving device 211 .

[0118] The control device 212 controls the power supply 207 , the first driving device 210 , and the second driving device 211 according to the property of the simulated light source 220 sensed by the photoelectric sensor 209 .

[0119] Specifically, the photoelectric sensor 209 can sense the intensity of the simulated light source 220, and the control device 212 can adjust the output power of the power supply 207 according to the intensity of the simulated light source 220 and adjust the size of the aperture 208 through the second driving device 211. When the intensity of the simulated light source 220 declines with the service life of the xenon lamp 201, the intensity of the simulated light source 220 can be maintained constant by increasing the output power of the power supply 207 or enlarging the aperture 208. In this embodiment, the output power of the power supply is between 20% and 100% of its maximum output power through the control of the control device, and the size of the aperture opening is between 0% and 100% of its maximum value through the control of the control device, but the present invention is not limited thereto.

[0120] In addition, the photoelectric sensor 209 can sense the spectrum of the simulated light source 220, and the control device 212 can adjust the position of the xenon lamp 201 through the first driving device 211 according to the spectrum of the simulated light source 220. When the spectrum of the simulated light source 220 shifts from the spectrum of sunlight as the service life of the xenon lamp 201 increases, the spectrum of the simulated light source 220 can be maintained constant by adjusting the position of the xenon lamp 201 in real time.

[0121] In summary, the light source system 200 of the present embodiment can monitor the properties of the simulated light source 220 in real time and make appropriate adjustments, so that the simulated light source 220 with a spectral consistency of A+ with sunlight can be continuously and stably provided through the light source system 200. The light source system 200 of the present embodiment has a certain degree of stability. After the light source system 200 is adjusted to the optimal state, even if the photoelectric sensor 209 is removed, the optimal state can still be reasonably maintained and will not be out of control immediately.

[0122] In a preferred embodiment, at least one of the elliptical reflector, the first plane reflector, the light homogenizer and the second plane reflector may have a coating on its surface, and the coating may be selected from the group consisting of an aluminum reflective film, a silver reflective film, a gold reflective film, a multilayer dielectric film and a special coating, and the thickness of the coating may be between 1 nm and 150 μm, but the present invention is not limited thereto. The spectrum of the simulated light source may be further adjusted by setting the coating.

[0123] In a preferred embodiment, it may further include: a third driving device connected to the first plane reflector to control the angle between the first plane reflector and the incident light source, but the present invention is not limited thereto. By controlling the angle between the first plane reflector and the incident light source, the spectrum of the simulated light source can be further adjusted.

[0124] In a preferred embodiment, it may further include: a fourth driving device connected to the light homogenizer to control the angle between the light homogenizer and the incident light source, but the present invention is not limited thereto. By controlling the angle between the light homogenizer and the incident light source, the spectrum of the simulated light source can be further adjusted.

[0125] In a preferred embodiment, it may further include: a fifth driving device connected to the second plane reflector to control the angle between the second plane reflector and the incident light source, but the present invention is not limited thereto. By controlling the angle between the second plane reflector and the incident light source, the spectrum of the simulated light source can be further adjusted.

[0126] In a preferred embodiment, the curvature of the elliptical reflector can be between 1.4 and 2.25, but the present invention is not limited thereto. By adjusting the curvature of the elliptical reflector, the spectrum of the simulated light source can be further adjusted. The curvature of the elliptical reflector is defined as the distance from the opening of the elliptical reflector to the focus divided by the opening diameter of the elliptical reflector.

[0127] In summary, the light source system of the present invention can continuously and stably provide a simulated light source with an intensity and spectrum close to that of sunlight, and the spectral consistency between the simulated light source and sunlight can reach an A+ level.

[0128] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the claims of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the scope of the claims of the present invention.

Claims

1. A light source system, characterized in that: It includes: - Xenon lamp; an elliptical reflector disposed at a position adjacent to the xenon lamp to reflect the light source emitted by the xenon lamp; a light homogenizer disposed on the path of the light source reflected by the elliptical reflector; an optical lens disposed on the path of the light source homogenized by the light homogenizer to refract the light source to output a simulated light source; a power supply electrically connected to the xenon lamp; a first driving device connected to the xenon lamp or the elliptical reflector to drive the xenon lamp or the elliptical reflector to change the relative position between the xenon lamp and the elliptical reflector; as well as A control device is connected to the power supply and the first driving device, wherein the control device controls the power supply and the first driving device according to the properties of the simulated light source.

2. The light source system according to claim 1, characterized in that: Further including: a first plane reflector disposed on the path of the light source reflected by the elliptical reflector to reflect the light source reflected by the elliptical reflector to the light homogenizer, the light homogenizer being disposed on the path of the light source reflected by the first plane reflector; a second plane reflector disposed on the path of the light source homogenized by the light homogenizer to reflect the light source homogenized by the light homogenizer to the optical lens, the optical lens being disposed on the path of the light source reflected by the second plane reflector; an aperture, disposed between the first plane reflector and the light homogenizer; a photoelectric sensor disposed on the path of the light source refracted by the optical lens; as well as a second driving device connected to the aperture to control the size of the aperture; The control device controls the power supply, the first driving device and the second driving device according to the property of the simulated light source sensed by the photoelectric sensor.

3. The light source system according to claim 2, characterized in that: in, A coating is disposed on the surface of at least one of the elliptical reflector, the first plane reflector, the light homogenizer and the second plane reflector.

4. The light source system according to claim 3, characterized in that: in, The coating layer is selected from the group consisting of an aluminum reflection film, a silver reflection film, a gold reflection film, a multi-layer dielectric film and a special coating film.

5. The light source system according to claim 3, characterized in that: in, The thickness of the coating is between 1 nm and 150 μm.

6. The light source system according to claim 2, characterized in that: Further including: A third driving device is connected to the first plane reflector to control the angle between the first plane reflector and the incident light source.

7. The light source system according to claim 2, characterized in that: Further including: A fourth driving device is connected to the light homogenizer to control the angle between the light homogenizer and the incident light source.

8. The light source system according to claim 2, characterized in that: Further including: A fifth driving device is connected to the second plane reflector to control the angle between the first plane reflector and the incident light source.

9. The light source system according to claim 1 or 2, characterized in that: in, The curvature of the elliptical reflector is between 1.4 and 2.

25.

10. The light source system according to claim 1 or 2, characterized in that: in, The first driving device drives the xenon lamp or the elliptical reflector to move up and down by 10 mm along a z direction.

11. The light source system according to claim 2, characterized in that: Wherein, through the control of the control device, the output power of the power supply is between 20% and 100% of its maximum output power, and through the control of the control device, the size of the aperture opening is between 0% and 100% of its maximum value.

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