Photovoltaic glass optical performance measuring equipment and testing method

Abstract

The invention discloses photovoltaic glass optical performance measurement equipment and a test method, and the measurement equipment comprises a computer and a software control end, and also comprises a host end and an optical measurement end. The optical measuring end comprises an integrating sphere, non-parallel double light sources are arranged outside the integrating sphere, the surface of the integrating sphere is connected with two groups of optical fiber probes, and the optical fiber probes are connected with the host end; a sample to be tested is correspondingly arranged outside one light through hole of the integrating sphere; the test method comprises the steps of system calibration, in-place of a to-be-tested product, measurement of optical performance, and display and storage of optical parameters. According to the invention, the optical properties such as reflection spectrum, transmission spectrum, visible light reflectivity, visible light transmissivity, photovoltaic reflectivity, photovoltaic transmissivity, color parameters, film thickness and the like of a large-area product can be rapidly measured.

Description

Technical Field

[0001] The present invention relates to the technical field of optical measurement, and in particular to a photovoltaic glass optical property measurement device and a testing method. Background Art

[0002] For photovoltaic glass cover plates, depositing anti-reflection film on their surface to effectively improve their transmittance is already a routine operation in photovoltaic glass factories. How to better control the quality parameters of glass coating products such as transmittance, color, and film thickness is a key focus for all glass coating companies.

[0003] At present, in order to measure all optical performance parameters of coated products, photovoltaic glass coating manufacturers need to be equipped with multiple sets of testing equipment, usually one set of equipment for transmittance testing, one set of equipment for reflectivity and color parameter testing, and one set of equipment for film thickness testing. This not only increases the investment cost of the testing equipment, but also increases the testing process and the workload of quality inspectors. The testing efficiency is relatively low, and data conflicts may also occur between different devices. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a photovoltaic glass optical performance measurement device and a test method.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a photovoltaic glass optical property measurement device, including a computer and a software control terminal, a host terminal and an optical measurement terminal;

[0006] The optical measurement end comprises an integrating sphere, a non-parallel dual light source is arranged outside the integrating sphere, two groups of optical fiber probes are connected to the surface of the integrating sphere, and the optical fiber probes are connected to the host end;

[0007] A sample to be tested is correspondingly arranged outside one of the light holes of the integrating sphere;

[0008] The light from the dual light sources alternately enters the integrating sphere through corresponding light holes. The integrating sphere homogenizes the light emitted by the light sources. Two sets of optical fiber probes respectively receive the reflected light of the sample to be tested and the reflected light of the inner wall of the integrating sphere and transmit them back to the corresponding spectrometers to obtain the reflection spectrum and transmission spectrum of the sample to be tested.

[0009] As a further description of the above technical solution, the dual light source includes a light source 1 and a light source 2, wherein the light source 1 is located at the equator of the integrating sphere, and the light source 2 is located at the south pole of the integrating sphere;

[0010] The integrating sphere is provided with a first light hole and a second light hole corresponding to the positions of the first light source and the second light source;

[0011] A baffle plate 1 is provided between the light source 1 and the light through hole 1, and the baffle plate 1 is used to control the light of the light source 1 to enter the integrating sphere;

[0012] A second baffle is provided between the second light source and the second light through hole, and the second baffle is used to control the light of the second light source to enter the integrating sphere.

[0013] As a further description of the above technical solution, the aperture of the first light-through hole is 4-25 mm, and the aperture of the second light-through hole is 4-60 mm.

[0014] As a further description of the above technical solution, the sample to be tested is arranged on the upper surface of the air flotation platform, the air flotation platform is arranged between the second light source and the integrating sphere, and the integrating sphere is suspended above the air flotation platform.

[0015] As a further description of the above technical solution, the interior of the integrating sphere is a uniform diffuse reflection surface, and the diffuse reflection material inside the integrating sphere is any one of PTFE and barium sulfate.

[0016] As a further description of the above technical solution, the diameter of the integrating sphere is 50-270 mm.

[0017] As a further description of the above technical solution, the optical fiber probe includes an optical fiber probe 1 and an optical fiber probe 2;

[0018] The angle between the optical fiber probe 1 and the north-south axis of the integrating sphere is θ, and the range of θ is 0-10°;

[0019] The optical fiber probe 2 is located on the equator of the integrating sphere, and the line connecting the position point of the optical fiber probe 2 to the center of the sphere is perpendicular to the line connecting the position point of the optical hole 1 to the center of the sphere.

[0020] As a further description of the above technical solution, a white cover is provided on the surface of the integrating sphere, and the position of the white cover is symmetrical with the position of the optical fiber probe with respect to the north-south axis of the integrating sphere;

[0021] The white cover plate includes an open state and a closed state. In the open state, an outward opening is formed at its position. In the closed state, the white cover plate is tightly coupled with the integrating sphere to become a component of the diffuse reflection wall of the integrating sphere.

[0022] As a further description of the above technical solution, the host end includes a spectrometer, a main control board and a power supply, the spectrometer includes spectrometer 1 and spectrometer 2, the spectrometer 1 is connected to the optical fiber probe 1 through an optical fiber, and the spectrometer 2 is connected to the optical fiber probe 2 through an optical fiber.

[0023] A testing method for photovoltaic glass optical performance measurement equipment based on any one of the above, comprising:

[0024] System calibration;

[0025] The product to be tested is in place, that is, the test points of the product to be tested are transmitted to the measurement position;

[0026] Measures optical properties including:

[0027] To measure the reflectivity, the light emitted by the light source 1 enters the integrating sphere through the light hole 1, and is homogenized by the integrating sphere on the sample to be measured. The optical fiber probe 1 receives the reflected light from the sample, and the optical fiber probe 2 receives the reflected light from the inner wall of the integrating sphere. The light received by the optical fiber probe 1 and the optical fiber probe 2 is transmitted to the spectrometer 1 and the spectrometer 2 respectively through the optical fiber probe 1 and the optical fiber probe 2 and the optical fiber. The spectrometer processes the light information and then transmits the original data to the computer for processing by the control software to obtain the reflection spectrum, visible light reflectivity, photovoltaic reflectivity, color parameters, and film thickness.

[0028] To measure transmittance, the light emitted by light source 2 passes through the sample, enters the integrating sphere through light hole 2, and is homogenized by the integrating sphere. Fiber optic probe 1 is in standby mode, and fiber optic probe 2 receives the reflected light from the inner wall of the integrating sphere, which is transmitted to spectrometer 2 through the optical fiber and fiber optic probe 2. The spectrometer processes the light information and then transmits the original data to the computer for processing by the control software to obtain the transmission spectrum, visible light transmittance, photovoltaic transmittance, and transmission color parameters.

[0029] Display and store optical parameters;

[0030] The computer and control software will instantly display the measured optical parameters and automatically save the measured optical performance parameters.

[0031] The present invention has the following beneficial effects:

[0032] 1. The present invention adopts an optical structure design combining a dual light source of non-parallel light, a single integrating sphere, a dual optical path, a post-spectral technology, and a sensor array. After the sample enters the measurement position, the reflectance spectrum, transmission spectrum, visible light reflectivity, visible light transmittance, photovoltaic reflectivity, photovoltaic transmittance, color parameters, film thickness and other optical properties of the sample can be quickly measured. In the process of measuring all the above optical performance parameters, there is no need to flip or move the sample, and the measurement speed is extremely fast. The measurement of all the above performance parameters can be completed within 1-5 seconds, which greatly improves the detection efficiency of the sample's optical performance.

[0033] 2. The present invention uses a dual light source with non-parallel light combined with a dual baffle design. It only needs a dual-channel stable power supply to provide drive and two sets of stable bulbs as light sources. There is no need to collimate the light emitted by the light source. The structure of the light source is simpler, the material cost is lower, and the light source has high stability. The control of the dual light source is achieved by baffle 1 and baffle 2. The design of the dual baffle does not require frequent opening or closing of the light source while effectively controlling the light path, so that the light source has better stability.

[0034] 3. The present invention adopts the design of a single integrating sphere. When the sample remains stationary during the test, it can ensure that both the reflected light of the sample and the transmitted light of the sample enter the integrating sphere. The performance test requirements of mirror reflection, diffuse reflection, mixed reflection, regular transmission and diffuse transmission can be met, so that the optical measurement equipment can be used to test the optical properties of float glass, embossed glass, plastic, photovoltaic cells and other products, and has a very wide range of application scenarios.

[0035] 4. The present invention adopts a dual optical path design, that is, the system includes a measurement optical path, namely optical fiber 1, and a reference optical path, namely optical fiber 2. The reference optical path will correct the inherent error in the integrating sphere measurement process to ensure that the test results have extremely high accuracy.

[0036] 5. The integrating sphere of the present invention is suspended above the measurement sample, and the measurement window faces the sample below. With the assistance of the air flotation platform, the optical performance test of large-area products such as glass and solar cells can be carried out. There is no need to cut the product during the product testing process. Therefore, the entire optical performance test process will not damage the product and can achieve rapid performance measurement.

[0037] 6. The intelligent control software system designed by the present invention can realize automatic testing, parameter analysis, data storage and review of products, and can be widely used in production line product process inspection and quality control analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of a photovoltaic glass optical property measurement device proposed by the present invention;

[0039] Figure 2 A schematic diagram of the optical measurement end proposed by the present invention;

[0040] Figure 3 Schematic diagram of the testing method proposed in the present invention.

[0041] Legend:

[0042] 1. Computer and software control terminal; 2. Host terminal; 3. Fiber optic probe 1; 4. Fiber optic probe 2; 5. Integrating sphere; 6. Light source 1; 7. Light source 2; 8. Light hole 1; 9. Light hole 2; 10. Baffle 1; 11. Baffle 2; 12. White cover; 13. Sample to be tested; 14. Air flotation platform. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Reference Figure 1-2 An embodiment of the present invention is a photovoltaic glass optical property measurement device, which adopts a non-parallel dual light source in conjunction with an integrating sphere 5 and two sets of optical fiber probes. After the sample enters the measurement position, the reflection spectrum, transmission spectrum, visible light reflectivity, visible light transmittance, photovoltaic reflectivity, photovoltaic transmittance, color parameters (including but not limited to: Y, x, y, L*, a*, b*), film thickness and other optical properties of the sample can be quickly measured. At the same time, during the measurement of the above optical performance parameters, there is no need to flip or move the sample, and the measurement of the above performance parameters can be completed within a short time (1-5s), which greatly improves the detection efficiency of the optical performance of the sample 13 to be tested.

[0045] Please refer to the specific Figure 1 The entire optical performance measurement device includes an optical measurement end, a host end 2 and a computer and software control end 1, and the computer and software control end 1 is a computer and control software. The host end 2 includes a spectrometer, a main control board and a power supply. In this embodiment, two spectrometers are provided, and each spectrometer is connected to an optical fiber. In other feasible implementations, only one spectrometer may be used. In this embodiment, two optical fibers are connected by an optical component, and signals are input into the spectrometer respectively. The optical element also has a function of controlling the signal input of the two optical fibers respectively, that is, when one optical fiber inputs a signal, the other optical fiber stops the signal input, and when the other optical fiber inputs a signal, one optical fiber stops the signal input, that is, the two optical fibers are controlled to alternately input optical signals.

[0046] Please continue to refer to Figure 2The optical measurement end includes an integrating sphere 5, a non-parallel dual light source is arranged outside the integrating sphere 5, two groups of optical fiber probes are connected to the surface of the integrating sphere 5, and the optical fiber probes are connected to the host end 2 through corresponding optical fibers. A sample 13 to be measured is arranged outside one of the light holes of the integrating sphere 5. The light source 16 is located at the equatorial position of the integrating sphere 5, and the emitted spectrum enters the integrating sphere 5 through the light hole 8 of the integrating sphere 5. There is a baffle 10 between the light source 16 and the integrating sphere 5. The baffle 10 has two states, namely, an open state and a closed state. In the open state, the light emitted by the light source 16 can enter the integrating sphere 5; in the closed state, the light emitted by the light source 16 cannot enter the integrating sphere 5. The baffle 10 is connected to a motor, and the main control board controls the motor to work, thereby controlling the open state or closed state of the baffle 10.

[0047] The light source 27 is located at the south pole of the integrating sphere 5, below the air flotation platform 14 and the sample. The light emitted by the light source 27 passes through the opening of the air flotation platform 14, transmits through the sample, and then enters the integrating sphere 5 through the light hole 29 of the integrating sphere 5. There is a baffle 211 between the light source 27 and the integrating sphere 5. The baffle 211 has two states, namely, an open state and a closed state. In the open state, the light emitted by the light source 27 can enter the integrating sphere 5; in the closed state, the light emitted by the light source 27 cannot enter the integrating sphere 5. The baffle 211 is connected to a motor, and the main control board controls the motor to work, thereby controlling the open state or closed state of the baffle 211.

[0048] In other feasible embodiments, a baffle may not be provided between the light source and the through hole, and the power switch may be controlled by the software control terminal 1 to achieve the alternating entry of light emitted by the light source 1 6 and the light source 2 7 .

[0049] Furthermore, the light source 1 6 and the light source 2 7 can be any one of a tungsten-halogen lamp light source, a xenon lamp light source, a deuterium lamp and a tungsten-halogen lamp composite light source.

[0050] Furthermore, the air floating platform 14 is located between the integrating sphere 5 and the light source 2 7. There is an opening at the position of the light source 2 7 for the light of the light source 2 7 to pass through. The air floating platform 14 is used to transport and place the sample to be tested. The integrating sphere 5 is suspended above the air floating platform 14, so that the different positions of the large-area sample to be tested can reach the measurement position through the air floating platform 14, so that the optical performance measurement of the large-area photovoltaic glass product can be carried out.

[0051] The specific structure of the integrating sphere 5 is described. It can be understood that the integrating sphere 5 is a spherical structure, and the interior of the integrating sphere 5 is a uniform diffuse reflection surface. The light entering the interior forms a uniform light field after multiple diffuse reflections. The diffuse reflection material inside the integrating sphere 5 can be PTFE or barium sulfate, preferably PTFE. The diameter of the integrating sphere 5 ranges from 50 to 270 mm, preferably from 150 to 200 mm.

[0052] The light holes on the integrating sphere 5 are described, including the light hole 1 8 and the light hole 2 9. Specifically:

[0053] The light-through hole 8 is located at the equator of the integrating sphere 5 , and has an aperture size of 4 mm to 25 mm, preferably 7 to 15 mm, and is mainly used for the light of the light source 6 to enter the integrating sphere 5 .

[0054] Preferably, the light hole 8 can be directly set as an SMA905 interface and connected to an optical fiber, and connected to an external light source through the optical fiber. In this mode, the light source 6 can be replaced by an external optical fiber light source.

[0055] The light hole 2 9 is located at the south pole of the integrating sphere 5, and the aperture size is 4mm-60mm, preferably 10-30mm. The light hole 2 9 is a sample measurement hole, and the sample to be measured will be placed at the light hole 2 9 for the measurement of reflectivity and transmittance. The sample normal is parallel to the north-south axis of the integrating sphere 5.

[0056] The optical fiber probe 3 is located near the North Pole of the integrating sphere 5. The line from the probe position to the sample measurement center makes an angle θ with the north-south axis of the integrating sphere 5, i.e., the sample normal. The range of θ is 0-10°, preferably 8°. There is a whiteboard cover at a symmetrical position with the probe.

[0057] The internal diffuse reflection material of the whiteboard cover is consistent with the internal diffuse reflection material of the integrating sphere 5. The whiteboard cover has two states, namely, an open state and a closed state. In the open state, the whiteboard cover is opened, and an external opening is formed at its position, and the light from the inside of the integrating sphere 5 irradiating the position of the whiteboard cover will be guided out of the integrating sphere 5 through the opening; in the closed state, the whiteboard cover is tightly coupled with the integrating sphere 5, and becomes a component of the diffuse reflection wall surface inside the integrating sphere 5.

[0058] When measuring with specular reflection mode, the whiteboard cover is in the closed state; when measuring without specular reflection mode, the whiteboard cover is in the open state. The whiteboard cover is connected to a motor, and the main control board controls the motor to operate, thereby controlling the open or closed state of the whiteboard cover.

[0059] Preferably, the optical fiber probe 3 is a direct optical fiber, connected to the integrating sphere 5 through an SMA905 connector, and the other end is directly connected to the spectrometer. Alternatively, the optical fiber probe 3 can also be a collimator of a suitable model, the rear end of the collimator is connected to the optical fiber through an SMA905 connector, and the other end of the optical fiber is directly connected to the spectrometer. The optical fiber probe 3 is mainly used to receive the reflected light of the sample.

[0060] Preferably, the optical fiber probe 24 is located on the equator of the integrating sphere 5, and its position is perpendicular to the position of the light hole 18. The optical fiber probe 24 is a direct optical fiber, connected to the integrating sphere 5 through an SMA905 connector, and the other end is directly connected to the spectrometer. As an option, the optical fiber probe 24 can also be a collimator of a suitable model, the rear end of the collimator is connected to the optical fiber through an SMA905 connector, and the other end of the optical fiber is directly connected to the spectrometer. The optical fiber probe 24 is mainly used to receive light from the inner wall of the integrating sphere 5.

[0061] Please continue to refer to Figure 3 , the present application also provides a testing method for photovoltaic glass optical performance measurement equipment:

[0062] System Calibration:

[0063] After the system starts warming up and stabilizes, calibrate the optical system.

[0064] Samples in place:

[0065] The points to be measured of the product to be measured are transmitted to the measuring position through the air floating platform 14 .

[0066] Measuring optical properties:

[0067] To measure the reflectivity, baffle 10 is in the open state, baffle 2 11 is in the closed state (at this time, the light from light source 2 7 cannot enter the integrating sphere 5), the light emitted by light source 1 6 enters the integrating sphere 5 through light hole 1 8, is homogenized by the integrating sphere 5 and acts on the sample, optical fiber probe 1 3 receives the reflected light from the sample, and optical fiber probe 2 4 receives the reflected light from the inner wall of the integrating sphere 5, and the light received by optical fiber probe 1 3 and optical fiber probe 2 4 is transmitted to spectrometer 1 and spectrometer 2 through optical fiber 1 and optical fiber 2 respectively, and the spectrometer processes the light information and then transmits the original data to the computer for processing by the control software. Thus, the reflection spectrum, visible light reflectivity, photovoltaic reflectivity, color parameters (including but not limited to: Y, x, y, L*, a*, b*), and film thickness are obtained.

[0068] To measure transmittance, baffle 10 is in the closed state (at this time, the light from light source 1 6 cannot enter the integrating sphere 5), the light from light source 2 7 transmits the sample, enters the integrating sphere 5 through light hole 2 9, and is homogenized by the integrating sphere 5. Fiber optic probe 1 3 is in the standby state, and fiber optic probe 2 4 receives the reflected light from the inner wall of the integrating sphere 5, and transmits it to spectrometer 2 through optical fiber 2. The spectrometer processes the light information and then transmits the original data to the computer for processing by the control software. Thus, the transmission spectrum, visible light transmittance, photovoltaic transmittance, and transmission color parameters (including but not limited to: Y, x, y, L*, a*, b*) are obtained.

[0069] Display and storage of optical parameters:

[0070] The inspectors can quickly determine the optical performance of the tested product through the computer and control software to check whether the product is qualified. At the same time, the control software will automatically save the measured optical performance parameters for subsequent data review.

[0071] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic glass optical performance measurement device, including a computer and a software control terminal, It is characterized in that It also includes a host end and an optical measurement end; The optical measurement end comprises an integrating sphere, a non-parallel dual light source is arranged outside the integrating sphere, two groups of optical fiber probes are connected to the surface of the integrating sphere, and the optical fiber probes are connected to the host end; A sample to be tested is correspondingly arranged outside one of the light holes of the integrating sphere; The light from the dual light sources alternately enters the integrating sphere through corresponding light holes. The integrating sphere homogenizes the light emitted by the light sources. Two sets of optical fiber probes respectively receive the reflected light of the sample to be tested and the reflected light of the inner wall of the integrating sphere and transmit them back to the corresponding spectrometers to obtain the reflection spectrum and transmission spectrum of the sample to be tested.

2. A photovoltaic glass optical performance measurement device according to claim 1, It is characterized in that The dual light source includes a light source 1 and a light source 2, wherein the light source 1 is located at the equator of the integrating sphere, and the light source 2 is located at the south pole of the integrating sphere; The integrating sphere is provided with a first light hole and a second light hole corresponding to the positions of the first light source and the second light source; A baffle plate 1 is provided between the light source 1 and the light through hole 1, and the baffle plate 1 is used to control the light of the light source 1 to enter the integrating sphere; A second baffle is disposed between the second light source and the second light through hole, and the second baffle is used to control the light of the second light source to enter the integrating sphere.

3. A photovoltaic glass optical performance measurement device according to claim 2, It is characterized in that The aperture of the first light-through hole is 4-25 mm, and the aperture of the second light-through hole is 4-60 mm.

4. A photovoltaic glass optical property measurement device according to claim 2, It is characterized in that The sample to be tested is arranged on the upper surface of the air floating platform, the air floating platform is arranged between the second light source and the integrating sphere, and the integrating sphere is suspended above the air floating platform.

5. A photovoltaic glass optical property measurement device according to claim 1, It is characterized in that The interior of the integrating sphere is a uniform diffuse reflection surface, and the diffuse reflection material inside the integrating sphere is any one of PTFE and barium sulfate.

6. A photovoltaic glass optical property measurement device according to claim 1, It is characterized in that The diameter of the integrating sphere is 50-270 mm.

7. A photovoltaic glass optical property measurement device according to claim 1, It is characterized in that The optical fiber probe comprises an optical fiber probe 1 and an optical fiber probe 2; The angle between the optical fiber probe 1 and the north-south axis of the integrating sphere is θ, and the range of θ is 0-10°; The optical fiber probe 2 is located on the equator of the integrating sphere, and the line connecting the position point of the optical fiber probe 2 to the center of the sphere is perpendicular to the line connecting the position point of the optical hole 1 to the center of the sphere.

8. The photovoltaic glass optical property measuring device according to claim 1, It is characterized in that A white cover plate is provided on the surface of the integrating sphere, and the position of the white cover plate is symmetrical with the position of the optical fiber probe with respect to the north-south axis of the integrating sphere; The white cover plate includes an open state and a closed state. In the open state, an outward opening is formed at its position. In the closed state, the white cover plate is tightly coupled with the integrating sphere to become a component of the diffuse reflection wall of the integrating sphere.

9. The photovoltaic glass optical property measuring device according to claim 1, It is characterized in that The host end includes a spectrometer, a main control board and a power supply. The spectrometer includes spectrometer 1 and spectrometer 2. The spectrometer 1 is connected to the optical fiber probe 1 through an optical fiber, and the spectrometer 2 is connected to the optical fiber probe 2 through an optical fiber.

10. A testing method for the photovoltaic glass optical property measuring device according to any one of claims 1 to 9, It is characterized in that include: System calibration; The product to be tested is in place, that is, the test points of the product to be tested are transmitted to the measurement position; Measures optical properties including: To measure the reflectivity, the light emitted by the light source 1 enters the integrating sphere through the light hole 1, and is homogenized by the integrating sphere on the sample to be measured. The optical fiber probe 1 receives the reflected light from the sample, and the optical fiber probe 2 receives the reflected light from the inner wall of the integrating sphere. The light received by the optical fiber probe 1 and the optical fiber probe 2 is transmitted to the spectrometer 1 and the spectrometer 2 respectively through the optical fiber probe 1 and the optical fiber probe 2 and the optical fiber. The spectrometer processes the light information and then transmits the original data to the computer for processing by the control software to obtain the reflection spectrum, visible light reflectivity, photovoltaic reflectivity, color parameters, and film thickness. To measure transmittance, the light emitted by light source 2 passes through the sample, enters the integrating sphere through light hole 2, is homogenized by the integrating sphere, and optical fiber probe 2 receives the reflected light from the inner wall of the integrating sphere. The light is transmitted to spectrometer 2 through optical fiber probe 2 and optical fiber. The spectrometer processes the light information and then transmits the original data to the computer for processing by the control software to obtain the transmission spectrum, visible light transmittance, photovoltaic transmittance, and transmission color parameters. Display and store optical parameters; The computer and control software will instantly display the measured optical parameters and automatically save the measured optical performance parameters.

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