Full-waveband optical test background simulation system in normal-temperature and normal-pressure environment

Abstract

The invention discloses a full-waveband optical test background simulation system under normal temperature and normal pressure environments. Comprising a detection device, a background reflecting surface, a moving device, a follow-up device and a black background plate, the detection device is arranged on the moving device, the background reflecting surface is arranged on the follow-up device, and the moving device and the follow-up device are respectively positioned on two sides of a detected object and can synchronously rotate around the detected object; the black background plate is suspended right above the object to be measured; when the full-band radiation characteristic test is carried out on the detected object, the included angle between the background reflecting surface and the horizontal plane is adjusted, so that the black background plate is filled in the field of view of the detection device, and a black background is provided for the detected object. According to the invention, the field is saved, and the measurement efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical measurement, and in particular to a full-band optical test background simulation system under normal temperature and pressure environment. Background Art

[0002] Optical measurement is a non-contact measurement technology that uses some basic properties of light, such as reflection, interference, and scattering, to perform relevant precise measurements. The main principle is to use the physical properties of light to detect the object being measured. Different measurement methods use different properties.

[0003] At present, when quantitatively measuring the full-band radiation characteristics of the measured object under normal temperature and pressure, a black background plate is required. However, due to the variable size and detection angle of the measured object, a larger black background plate needs to be used and the position of the black background needs to be adjusted continuously according to the position of the measured object and the change of the detection angle, which not only occupies the laboratory space, but also affects the measurement efficiency.

[0004] Therefore, there is an urgent need for a full-band optical test background simulation system under normal temperature and pressure environment to solve the above problems. Summary of the invention

[0005] The present invention provides a full-band optical test background simulation system under normal temperature and pressure environment, which not only saves space but also improves measurement efficiency. The technical solution is as follows:

[0006] The present invention provides a full-band optical test background simulation system under normal temperature and pressure environment, comprising: a detection device, a background reflection surface, a moving device, a follower device and a black background plate;

[0007] The detection device is arranged on the mobile device, the background reflection surface is arranged on the follower device, the mobile device and the follower device are respectively located on both sides of the object to be measured, and can rotate synchronously around the object to be measured; the black background plate is suspended directly above the object to be measured;

[0008] When the full-band radiation characteristic test is performed on the object to be measured, the electromagnetic waves emitted by the black background plate are reflected to the detection device by adjusting the angle between the background reflection surface and the horizontal plane, so as to provide a black background for the object to be measured.

[0009] In a possible design, a cooling pipe is laid on the top surface of the black background plate, and a low-temperature liquid flows in the cooling pipe. The low-temperature liquid is used to reduce the temperature of the black background plate to a preset temperature.

[0010] In a possible design, the cooling pipe is laid in a spiral shape on the top surface of the black background plate.

[0011] In a possible design, the black background plate is made of a black oxidized aluminum plate.

[0012] In a possible design, the difference between the preset temperature and the temperature of the object to be measured is 10-20°C.

[0013] In a possible design, the angle between the background reflection surface and the horizontal plane is 30-60°.

[0014] The embodiment of the present invention provides a full-band optical test background simulation system under normal temperature and pressure environment. By suspending a black background plate just above the object to be measured, laboratory space can be saved. By designing a background reflection surface and adjusting its angle with the horizontal plane, the electromagnetic waves emitted by the black background plate can be reflected to the detection device, thereby providing a black background for the object to be measured. In addition, by arranging a mobile device and a follower device, when it is necessary to adjust the measurement angle, it is only necessary to rotate the mobile device and the follower device synchronously to quickly reach the desired measurement angle without moving the black background plate. It can be seen that the present application can not only save space, but also improve measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of a full-band optical test background simulation system under normal temperature and pressure environment provided by an embodiment of the present invention;

[0017] Figure 2 It is a schematic diagram of a detection device provided by an embodiment of the present invention.

[0018] Reference numerals:

[0019] 1-Detection device;

[0020] 11-detector; 12-first lens; 13-attenuation sheet wheel; 14-attenuation sheet; 15-controller; 16-brightness meter; 17-second lens; 18-box; 19-light shield;

[0021] 2-background reflective surface; 3-moving device; 4-follow-up device; 5-black background plate; 6-cooling pipe; 7-object to be measured. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] The specific implementation of the above concept is described below.

[0024] Please refer to Figure 1 The embodiment of the present invention provides a full-band optical test background simulation system under normal temperature and pressure environment, including:

[0025] Detection device 1, background reflection surface 2, moving device 3, follow-up device 4 and black background plate 5;

[0026] The detection device 1 is arranged on the moving device 3, the background reflection surface 2 is arranged on the following device 4, the moving device 3 and the following device 4 are respectively located on both sides of the measured object 7, and can rotate synchronously around the measured object 7; the black background plate 5 is suspended directly above the measured object 7;

[0027] When the full-band radiation characteristic test is performed on the object 7 to be tested, the electromagnetic waves emitted by the black background plate 5 are reflected to the detection device 1 by adjusting the angle between the background reflection surface 2 and the horizontal plane, so as to provide a black background for the object 7 to be tested.

[0028] In this embodiment, by suspending the black background plate 5 just above the object to be measured 7, the laboratory space can be saved. By designing the background reflection surface 2 and adjusting the angle between it and the horizontal plane, the electromagnetic waves emitted by the black background plate 5 can be reflected to the detection device 1, thereby providing a black background for the object to be measured 7. In addition, by arranging the mobile device 3 and the follower device 4, when it is necessary to adjust the measurement angle, it is only necessary to rotate the mobile device 3 and the follower device 4 synchronously to quickly reach the required measurement angle without moving the black background plate 5. It can be seen that the present application can not only save space, but also improve measurement efficiency.

[0029] It should be noted that the detection device 1 preferably forms an angle of 180° with the background reflection surface 2 and is respectively arranged opposite to the object to be detected 7, so as to facilitate following the angle change of the detection device 1.

[0030] It should also be noted that the full band includes the visible light band, the laser band and the infrared band. When visible light and laser are used for optical testing, there is no need to cool the black background plate 5. However, when the infrared band is used for optical testing, the black background plate 5 needs to be cooled so that there is a temperature difference between it and the object to be measured 7. Therefore, in some embodiments, when the infrared band is used for optical testing, it is also necessary to lay a cooling pipe 6 on the top surface of the black background plate 5, and a low-temperature liquid flows in the cooling pipe 6. The low-temperature liquid is used to reduce the temperature of the black background plate 5 to a preset temperature, which is lower than the temperature of the object to be measured, and the difference between the preset temperature and the temperature of the object to be measured 7 is not less than 5°C.

[0031] In this step, by controlling the flow rate of the refrigerant in the pipeline, the temperature of the black background plate 5 can be controlled so that there is a significant temperature difference between the temperature of the black background plate 5 and the temperature of the measured object 7. In this way, the environmental influence of the measurement can be eliminated, and the detection device 1 can obtain data with uniform background and low noise, thereby improving the test accuracy.

[0032] In some embodiments, the black background plate 5 is made of an oxidized black aluminum plate, and the cooling pipe 6 is laid on the top surface of the black background plate 5 in a spiral shape.

[0033] By laying spiral pipes above the aluminum plate, the temperature of the aluminum plate can be quickly reduced and the heat exchange effect can be improved.

[0034] In some embodiments, the angle between the background reflection surface 2 and the horizontal plane is 30-60°, preferably 45°. Of course, the user can also choose other angles, as long as the electromagnetic waves emitted by the black background plate 5 are reflected to the detection device 1.

[0035] In addition, the inventors discovered during their work that when measuring the object 7 in the laboratory, it is usually divided into visible light testing and laser testing. Since the testing principles of the two light sources are different, when different light sources are used for testing, different detection devices 1 need to be replaced, which affects the test efficiency.

[0036] Based on this, the inventor proposes that Figure 2 The detection device 1 shown comprises:

[0037] The detector 11 is suitable for the visible light band and the laser band within a preset range;

[0038] A first lens 12 is arranged at the front end of the detector 11;

[0039] A plurality of coaxially arranged attenuation sheet wheels 13 are arranged at the front end of the first lens 12, each of the attenuation sheet wheels 13 is provided with a plurality of circular positions evenly distributed along its circumference, each of the positions is used to fix an attenuation sheet 14, and each attenuation sheet 14 has a different attenuation multiple;

[0040] During operation, based on the type and intensity of the light source, the target attenuation sheet 14 that meets the requirements is determined, and the position of each attenuation sheet wheel 13 is adjusted so that the axis of the target attenuation sheet 14 coincides with the axis of the first lens 12, and the first lens 12 and the detector 11 are used to measure the visible light brightness or laser reflection cross-sectional area of ​​the object 7 under test.

[0041] In this embodiment, first, a detector 11 suitable for the visible light band and the laser band of a preset range is used. Secondly, by setting up multiple sets of attenuation wheels 13, it is possible to select suitable attenuation wheels 13 and attenuation sheets 14 with suitable attenuation multiples for light sources of different types and intensities to attenuate the light so that it meets the detection requirements. For example, when visible light is used, an attenuation wheel 13 corresponding to the visible light is selected, and an attenuation sheet 14 with a suitable multiple is determined according to the light intensity, and the axis of the attenuation sheet 14 is made to coincide with the axis of the first lens 12. Finally, the lens and the detector 11 are used to quantitatively measure the visible light and laser characteristics of the object 7 to be measured. The present application integrates the laser detection system and the visible light detection system into one. When the light source is changed, only the attenuation wheel 13 and the attenuation sheet 14 need to be adjusted to meet the measurement requirements without replacing the system. Therefore, the efficiency of optical measurement can be improved.

[0042] It should be noted that when it is not necessary to attenuate the light intensity, the attenuation sheet 14 may not be installed on the attenuation sheet wheel 13, and the axis of the position where the attenuation sheet 14 is not installed may be coincident with the axis of the first lens 12. In addition, when multiple attenuations are required, one attenuation sheet 14 may be selected from multiple attenuation sheet wheels 13, and the axes of multiple attenuation sheets 14 may be coincident with the axis of the first lens 12 at the same time, so as to achieve the effect of multiple attenuations.

[0043] It should also be noted that in order to ensure the integrated design of the visible light-laser detection system, it is necessary to select a laser band that can respond to the visible light band and the preset range, such as the 1000nm to 1600nm laser band. Of course, users can also use other types of detectors 11 as long as they meet the measurement requirements.

[0044] In some embodiments, a brightness meter 16 and a second lens 17 disposed at the front end of the brightness meter 16 are also included;

[0045] When measuring the ambient brightness, the axis of the attenuation plate 14 that meets the requirements is adjusted to coincide with the axis of the second lens 17 , so that the brightness of the environment can be measured using the brightness meter 16 .

[0046] In this example, the luminance meter 16 can be provided to calibrate the on-site environment and measure the impact of the environment on the measurement in real time.

[0047] In some embodiments, a controller 15 is further included, which is connected to the detector 11, the first lens 12, each attenuation sheet wheel 13, the brightness meter 16 and the second lens 17 respectively;

[0048] The controller 15 is used to control the detector 11 , the first lens 12 , each attenuation wheel 13 , the brightness meter 16 and the second lens 17 .

[0049] In this embodiment, the controller 15 can control the switch of the detector 11, the movement in azimuth and pitch, etc.; the controller 15 can also control the first lens 12 and the second lens 17 to adjust the direction and intensity of light entering and exiting, ensuring that the light can be accurately focused on the detector 11, and then converted into an electrical signal through the detector 11, which is amplified and processed to generate a digital image.

[0050] In addition, in some embodiments, each attenuation wheel 13 is equipped with a motor, a driver, a motion controller 15 and a position measurement device. The above devices cooperate with the controller 15 to control each attenuation wheel 13 to rotate to a position that meets the requirements, thereby facilitating testing requirements.

[0051] In this example, the luminance meter 16 can be provided to calibrate the on-site environment and measure the impact of the environment on the measurement in real time.

[0052] In some embodiments, the first lens 12 and the second lens 17 both include a focusing function, and both include a two-stage lens group; wherein the first-stage lens group is a positive lens group, and the second-stage lens group is a negative lens group.

[0053] In some embodiments, the optical effective aperture of the first-stage lens is Φ125mm, and the focal length is designed to be 95mm; the optical effective aperture of the second-stage lens group is Φ50.8mm, and the focal length is designed to be -50.8mm; the combination of the first-stage lens and the second-stage lens group has a 30° field of view.

[0054] In this embodiment, each lens is achromatic, mainly responsible for receiving weak echo signals, including focusing function, and the overall design is a Galilean telescope system. In addition, the second-stage lens group uses a negative lens group to effectively compress the volume of the optical system, and the Galilean telescope system forms a positive image, which is more convenient for human eyes to observe through the display.

[0055] like Figure 2 As shown, in some embodiments, it also includes a box 18 and two light shields 19;

[0056] The detector 11, the first lens 12, the brightness meter 16, the second lens 17 and each attenuation wheel 13 are all arranged in a box 18; two through holes are arranged on the wall surface of the box 18 on the side close to the attenuation wheel 13, and the axis of one of the through holes coincides with the axis of the first lens 12, and the axis of the other through hole coincides with the axis of the second lens 17; each light shield 19 is respectively arranged on the outside of each through hole.

[0057] It should be noted that, in this article, relational terms such as first, second, third and fourth 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 "include", "comprise" 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, the elements defined by the statement "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0058] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A full-band optical test background simulation system under normal temperature and pressure environment, characterized in that: include: A detection device (1), a background reflection surface (2), a moving device (3), a follow-up device (4) and a black background plate (5); The detection device (1) is arranged on the moving device (3), the background reflection surface (2) is arranged on the follower device (4), the moving device (3) and the follower device (4) are respectively located on both sides of the object to be measured (7), and can rotate synchronously around the object to be measured (7); the black background plate (5) is suspended directly above the object to be measured (7); When the full-band radiation characteristic test is performed on the object to be measured (7), the electromagnetic waves emitted by the black background plate (5) are reflected to the detection device (1) by adjusting the angle between the background reflection surface (2) and the horizontal plane, so as to provide a black background for the object to be measured (7).

2. The system according to claim 1, characterized in that When the optical test is performed in the infrared band, a cooling pipe (6) is also included; The cooling pipe (6) is laid on the top surface of the black background plate (5), and a low-temperature liquid flows in the cooling pipe (6). The low-temperature liquid is used to reduce the temperature of the black background plate (5) to a preset temperature, and the preset temperature is lower than the temperature of the object to be measured (7).

3. The system according to claim 2, characterized in that The cooling pipe (6) is laid in a spiral shape on the top surface of the black background plate (5).

4. The system according to claim 2, characterized in that The black background plate (5) is made of an oxidized black aluminum plate.

5. The system according to claim 2, characterized in that The difference between the preset temperature and the temperature of the measured object (7) is not less than 5°C.

6. The system according to claim 1, characterized in that The angle between the background reflection surface (2) and the horizontal plane is 30-60°.

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