Visible light-laser integrated detection system

Abstract

The invention discloses a visible light-laser integrated detection system. Comprising a detector suitable for a visible light band and a laser band in a preset range; the first lens is arranged at the front end of the detector; the plurality of coaxial attenuation slice wheels are arranged at the front end of the first lens, each attenuation slice wheel is provided with a plurality of circular clamping positions which are uniformly distributed along the circumferential direction of the attenuation slice wheel, each clamping position is used for fixing an attenuation slice, and the attenuation multiples of the attenuation slices are different; in the working process, based on the type and intensity of a light source, a target attenuation piece meeting the requirement is determined, the position of each attenuation piece wheel is adjusted so that the axis of the target attenuation piece can coincide with the axis of the first lens, and the first lens and the detector are used for measuring the visible light brightness or the laser reflection sectional area of a measured object. According to the invention, the efficiency of optical measurement can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical measurement, and in particular to a visible light-laser integrated detection system. Background Art

[0002] Optical measurement is a non-contact measurement technology that uses some basic properties of light, such as reflection, interference, scattering, etc. 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. At present, optical measurement is widely used in various fields such as industry, medicine, environmental science, physics, agriculture and military, and has achieved many major results.

[0003] When measuring objects in the laboratory, related technologies are 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, the detection system needs to be replaced, which affects the test efficiency.

[0004] Therefore, there is an urgent need for a visible light-laser integrated detection system to solve the above problems. Summary of the invention

[0005] The present invention provides a visible light-laser integrated detection system, which can improve the efficiency of optical measurement. The technical solution is as follows:

[0006] The present invention provides a visible light-laser integrated detection system, comprising:

[0007] Detectors, suitable for visible light band and laser band of preset range;

[0008] A first lens, arranged at the front end of the detector;

[0009] A plurality of coaxially arranged attenuation sheet wheels are arranged at the front end of the first lens, each of the attenuation sheet wheels is provided with a plurality of circular clamping positions evenly distributed along its circumference, each of the clamping positions is used to fix an attenuation sheet, and each of the attenuation sheets has a different attenuation multiple;

[0010] During operation, based on the type and intensity of the light source, a target attenuation sheet that meets the requirements is determined, and the position of each attenuation sheet wheel is adjusted so that the axis of the target attenuation sheet coincides with the axis of the first lens, and the first lens and the detector are used to measure the visible light brightness or laser reflection cross-sectional area of ​​the object being measured.

[0011] In a possible design, it also includes a brightness meter and a second lens disposed at the front end of the brightness meter;

[0012] When measuring the ambient brightness, the axis of the attenuation sheet that meets the requirements is adjusted to coincide with the axis of the second lens, so as to measure the ambient brightness using the brightness meter.

[0013] In a possible design, a controller is further included, which is respectively connected to the detector, the first lens, each of the attenuation sheet wheels, the brightness meter and the second lens;

[0014] The controller is used to control the detector, the first lens, each of the attenuation wheels, the brightness meter and the second lens.

[0015] In a possible design, the first lens and the second lens both include a focusing function, and both include two-stage lens groups; wherein the first-stage lens group is a positive lens group, and the second-stage lens group is a negative lens group.

[0016] In a possible design, 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.

[0017] In a possible design, each of the damper wheels is equipped with a motor, a driver, a motion controller and a position measuring device.

[0018] In a possible design, the laser wavelength band in the preset range is 1000nm to 1600nm.

[0019] In one possible design, a box and two light shields are also included;

[0020] The detector, the first lens, the brightness meter, the second lens and each of the attenuation wheels are all arranged in the box body; two through holes are arranged on the wall surface of the box body close to the attenuation wheel, the axis of one of the through holes coincides with the axis of the first lens, and the axis of the other through hole coincides with the axis of the second lens; each of the light shields is respectively arranged on the outside of each of the through holes.

[0021] The embodiment of the present invention provides a visible light-laser integrated detection system. First, a detector suitable for the visible light band and the laser band in a preset range is used. Secondly, by setting up multiple sets of attenuation wheels, suitable attenuation wheels and attenuation plates can be selected for light sources of different types and intensities to attenuate the light so that it meets the detection requirements. Finally, the lens and detector are used to quantitatively measure the visible light and laser characteristics of the object under test. 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 and attenuation plate need to be adjusted to meet the measurement requirements without replacing the system. Therefore, the efficiency of optical measurement can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 is a schematic diagram of a visible light-laser integrated detection system provided by one embodiment of the present invention;

[0024] Figure 2 is a schematic diagram of the spectral response of a detector provided by an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of an optical design of a lens provided by an embodiment of the present invention;

[0026] Figures 4 to 7 The transmittance data of attenuation sheets with different attenuation multiples provided by one embodiment of the present invention.

[0027] Reference numerals:

[0028] 1-detector; 2-first lens; 3-attenuation wheel; 4-attenuation sheet; 5-controller; 6-brightness meter; 7-second lens; 8-box; 9-light shield. DETAILED DESCRIPTION

[0029] 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.

[0030] The specific implementation of the above concept is described below.

[0031] Please refer to Figure 1 , an embodiment of the present invention provides a visible light-laser integrated detection system, comprising:

[0032] Detector 1, suitable for visible light band and laser band within a preset range;

[0033] A first lens 2, arranged at the front end of the detector 1;

[0034] A plurality of coaxially arranged attenuation sheet wheels 3 are arranged at the front end of the first lens 2, each of the attenuation sheet wheels 3 is provided with a plurality of circular clamping positions evenly distributed along its circumference, each clamping position is used to fix an attenuation sheet 4, and each attenuation multiple of the attenuation sheet 4 is different;

[0035] During operation, based on the type and intensity of the light source, the target attenuation sheet 4 that meets the requirements is determined, and the position of each attenuation sheet wheel 3 is adjusted so that the axis of the target attenuation sheet 4 coincides with the axis of the first lens 2, and the first lens 2 and the detector 1 are used to measure the visible light brightness or laser reflection cross-sectional area of ​​the object being measured.

[0036] In this embodiment, a detector 1 suitable for the visible light band and the laser band of a preset range is first used. Secondly, by setting up multiple sets of attenuation wheels 3, it is possible to select suitable attenuation wheels 3 and attenuation plates 4 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 3 corresponding to the visible light is selected, and an attenuation plate 4 with a suitable multiple is determined according to the light intensity, and the axis of the attenuation plate 4 is made to coincide with the axis of the first lens 2. Finally, the lens and the detector 1 are used to quantitatively measure the visible light and laser characteristics of the object under test. 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 3 and the attenuation plate 4 need to be adjusted to meet the measurement requirements without replacing the system. Therefore, the efficiency of optical measurement can be improved.

[0037] It should be noted that when it is not necessary to attenuate the light intensity, the attenuation sheet 4 may not be installed on the attenuation sheet wheel 3, and the axis of the position where the attenuation sheet 4 is not installed may be made to coincide with the axis of the first lens 2. In addition, when multiple attenuations are required, one attenuation sheet 4 may be selected from multiple attenuation sheet wheels 3, and the axes of multiple attenuation sheets 4 may be made to coincide with the axis of the first lens 2 at the same time, thereby achieving the effect of multiple attenuations.

[0038] 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. Figure 2The CIS-CM990QE detector 1 of the band range shown is used. Of course, other types of detectors 1 can also be used as long as they meet the measurement requirements.

[0039] In some embodiments, it further includes a brightness meter 6 and a second lens 7 disposed at the front end of the brightness meter 6;

[0040] When measuring the ambient brightness, the axis of the attenuation sheet 4 that meets the requirements is adjusted to coincide with the axis of the second lens 7 , so that the brightness of the environment can be measured using the brightness meter 6 .

[0041] In this example, by setting up the brightness meter 6, the on-site environment can be calibrated and the impact of the environment on the measurement can be measured in real time.

[0042] In some embodiments, a controller 5 is further included, which is connected to the detector 1, the first lens 2, each attenuation sheet wheel 3, the brightness meter 6 and the second lens 7 respectively;

[0043] The controller 5 is used to control the detector 1 , the first lens 2 , each attenuation wheel 3 , the brightness meter 6 and the second lens 7 .

[0044] In this embodiment, the controller 5 can control the switch of the detector 1, the movement in azimuth and pitch, etc.; the controller 5 can also control the first lens 2 and the second lens 7 to adjust the direction and intensity of light entering and exiting, ensuring that the light can be accurately focused on the detector 1, and then converted into an electrical signal through the detector 1, which is amplified and processed to generate a digital image.

[0045] In addition, in some embodiments, each attenuation wheel 3 is equipped with a motor, a driver, a motion controller 5 and a position measurement device. The above devices cooperate with the controller 5 to control each attenuation wheel 3 to rotate to a position that meets the requirements, thereby facilitating testing requirements.

[0046] In some embodiments, the first lens 2 and the second lens 7 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.

[0047] 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.

[0048] 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 use of a negative lens group in the second-stage lens group can 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. The optical design schematics of each lens are shown in Figure 1. Figure 3 shown.

[0049] like Figure 1 As shown, in some embodiments, it also includes a box 8 and two light shields 9;

[0050] The detector 1, the first lens 2, the brightness meter 6, the second lens 7 and each attenuation wheel 3 are all arranged in a box body 8; two through holes are arranged on the wall surface of the box body 8 on the side close to the attenuation wheel 3, the axis of one of the through holes coincides with the axis of the first lens 2, and the axis of the other through hole coincides with the axis of the second lens 7; each light shielding cover 9 is respectively arranged on the outside of each through hole.

[0051] The specific arrangement of the attenuation plate wheel 3 and the attenuation plate 4 is described below by way of example.

[0052] In this embodiment, three groups of attenuation sheet wheels 3 are designed, including one group of visible light attenuation sheet wheels 3 and two groups of laser attenuation sheet wheels 3. In order to improve the test efficiency and test accuracy, the control of the attenuation sheet wheels 3 adopts an electric remote control method. During the measurement process, the attenuation sheet 4 is switched according to the brightness of the measured image. For example, when the brightness of the measured image is high, the attenuation sheet 4 with a larger attenuation multiple is used, and vice versa, the attenuation sheet 4 with a smaller attenuation multiple is used.

[0053] Attenuation sheets 4 of various required attenuation multiples are installed on the visible light attenuation sheet wheel 3. Different attenuation sheets 4 need to be switched according to experimental control to expand the dynamic range of the system. In order to adapt to objects under test with different brightness ranges, multiple sets of attenuation sheets 4 of different specifications are required, such as 0.5X, 0.2X, 0.1X, 0.05X, 0.01X and other specifications.

[0054] Each attenuator 4 wheel has 5 positions, numbered from 1 to 5. Among them, there is no attenuator 4 at position 1, and the attenuation is 0dB. The transmittance of attenuator 4 at positions 2-5 can be seen in Figure 4-Figure 7 .

[0055] In addition, for laser, 1064nm and 1550nm bands are selected respectively. Each band corresponds to an attenuation sheet wheel 3. For each attenuation sheet wheel 3, the average transmittance of each position on the attenuation sheet wheel 3 is determined by the average value method. The specific data are shown in Tables 1 and 2.

[0056] Table 1 Parameters of the attenuation plates on the first attenuation plate wheel

[0057]

[0058] Table 2 Parameters of the attenuation plates on the second attenuation plate wheel

[0059]

[0060]

[0061] By using the above parameters to test the object, whether it is visible light or laser, good test results can be obtained.

[0062] 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.

[0063] 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 visible light-laser integrated detection system, characterized in that: include: The detector (1) is suitable for a visible light band and a laser band within a preset range; A first lens (2) is arranged at the front end of the detector (1); A plurality of coaxially arranged attenuation sheet wheels (3) are arranged at the front end of the first lens (2), each of the attenuation sheet wheels (3) being provided with a plurality of circular clamping positions evenly distributed along its circumference, each of the clamping positions being used to fix an attenuation sheet (4), and each of the attenuation sheets (4) having a different attenuation multiple; During operation, based on the type and intensity of the light source, a target attenuation sheet (4) that meets the requirements is determined, and the position of each attenuation sheet wheel (3) is adjusted so that the axis of the target attenuation sheet (4) coincides with the axis of the first lens (2), and the first lens (2) and the detector (1) are used to measure the visible light brightness or laser reflection cross-sectional area of ​​the object being measured.

2. The system according to claim 1, characterized in that It also includes a brightness meter (6) and a second lens (7) arranged at the front end of the brightness meter (6); When measuring the ambient brightness, the axis of the attenuation sheet (4) that meets the requirements is adjusted to coincide with the axis of the second lens (7), so that the brightness of the environment can be measured using the brightness meter (6).

3. The system according to claim 2, characterized in that It also includes a controller (5) connected to the detector (1), the first lens (2), each of the attenuation sheet wheels (3), the brightness meter (6) and the second lens (7) respectively; The controller (5) is used to control the detector (1), the first lens (2), each of the attenuation sheet wheels (3), the brightness meter (6) and the second lens (7).

4. The system according to claim 2, characterized in that The first lens (2) and the second lens (7) both have a focusing function and both include two-stage lens groups; wherein the first-stage lens group is a positive lens group and the second-stage lens group is a negative lens group.

5. The system according to claim 4, characterized in that 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.

6. The system according to claim 1, characterized in that Each of the attenuation disc wheels (3) is equipped with a motor, a driver, a motion controller (5) and a position measuring device.

7. The system according to claim 1, characterized in that The laser wavelength band in the preset range is 1000nm to 1600nm.

8. The system according to claim 2, characterized in that It also includes a box body (8) and two light shields (9); The detector (1), the first lens (2), the brightness meter (6), the second lens (7) and each of the attenuation wheels (3) are all arranged in the box body (8); two through holes are arranged on the wall surface of the box body (8) close to the attenuation wheel (3), the axis of one of the through holes coincides with the axis of the first lens (2), and the axis of the other through hole coincides with the axis of the second lens (7); each of the light shielding covers (9) is respectively arranged on the outside of each of the through holes.

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