Optical detection system

Abstract

The application relates to an optical detection system, comprising: an imaging colorimeter, a plurality of motors and linkage mechanisms thereof, a field programmable gate array, and a host computer, wherein the imaging colorimeter comprises a lens, an image sensor, a plurality of groups of optical filters and a bearing structure thereof, the lens is used for collecting an optical signal of a measured optical component, and the optical path of the optical signal sequentially passes through the plurality of groups of optical filters to the image sensor; the linkage mechanism of each motor is connected with a corresponding bearing structure, and drives the bearing structure to move, so that a target optical filter in each group of optical filters is synchronously moved onto the optical path of the optical signal; the field programmable gate array comprises a sensor driving assembly and a plurality of motor driving assemblies, the sensor driving assembly is connected with the image sensor, the plurality of motor driving assemblies are respectively connected with the plurality of motors; and the host computer is connected with the sensor driving assembly and the plurality of motor driving assemblies. The optical detection system provided by the application can improve the detection efficiency.

Description

Technical Field

[0001] This application relates to the field of optical inspection technology, and in particular to an optical inspection system. Background Technology

[0002] Flat panel display technology, as a core pillar of the modern information industry, has been widely used in various electronic terminal devices such as televisions, computers, and mobile phones. With the rapid development of display technology and product iteration, the requirements for display quality testing are becoming increasingly stringent, prompting continuous innovation in visual evaluation technologies based on optical physical measurements. Meanwhile, light source technology, as a crucial foundation of the optoelectronic industry, plays a key role in industrial manufacturing, medical equipment, and scientific research instruments. From large-size flat panel light sources to miniature laser pointers, their performance evaluation also relies on precise optical physical measurement technologies.

[0003] As the core device of an optical inspection system, the imaging colorimeter works as follows: First, a high-precision optical lens acquires the light signal of the object being measured. This signal then undergoes spectral analysis and intensity tuning via a filtering system composed of color filters and ND (Neutral Density) filters. Next, a CCD (Charge Coupled Device) / CMOS (Complementary Metal Oxide Semiconductor) image sensor performs photoelectric conversion, and finally, an ADC (Analog to Digital Converter) circuit digitizes the signal. The digitized signal is then analyzed by specialized algorithms in the host computer software, outputting multiple key optical parameters, including brightness, chromaticity, uniformity, and color difference.

[0004] However, existing optical inspection systems still have bottlenecks in terms of inspection efficiency, making it difficult to meet the increasingly demanding requirements for inspection time in industrial inspection. Utility Model Content

[0005] Therefore, it is necessary to provide an optical inspection system that can improve inspection efficiency.

[0006] An optical inspection system, comprising:

[0007] An imaging colorimeter includes a lens, an image sensor, multiple sets of filters, and a support structure for each set of filters. The lens is used to collect the optical signal of the optical component under test, and the optical signal passes through the multiple sets of filters in sequence to the image sensor.

[0008] Multiple motors;

[0009] The linkage mechanism of each of the plurality of motors is connected to the corresponding support structure. Each motor is used to drive the support structure to move through the corresponding linkage mechanism, so as to synchronously move the target filter in each group of filters to the optical path of the optical signal.

[0010] A field-programmable gate array includes a sensor driving component and multiple motor driving components. The sensor driving component is connected to the image sensor, and the multiple motor driving components are respectively connected to the multiple motors. The sensor driving component is used to receive an image signal corresponding to the light signal sent by the image sensor.

[0011] A host computer is connected to the sensor driving component and the plurality of motor driving components. The host computer is used to receive the image signal sent by the sensor driving component.

[0012] In one embodiment, the supporting structure is a filter wheel, and each set of filters is arranged around the axis of the filter wheel on its respective filter wheel. Each motor is used to drive the filter wheel to rotate around the axis through a corresponding linkage mechanism.

[0013] In one embodiment, the different groups of filters in the plurality of filters are of different types.

[0014] In one embodiment, the plurality of filters includes at least one set of colored filters and one set of attenuation filters.

[0015] In one embodiment, the plurality of motors includes a first motor and a second motor, and the plurality of motor drive components includes a first motor drive component connected to the first motor and a second motor drive component connected to the second motor;

[0016] The linkage mechanism of the first motor is connected to the support structure of a set of colored filters;

[0017] The linkage mechanism of the second motor is connected to the support structure of a set of attenuation filters.

[0018] In one embodiment, the field-programmable gate array further includes:

[0019] The command parsing component connects the host computer and the multiple motor drive components. The command parsing component is used to receive the position signal sent by the host computer and send the multiple motor control signals corresponding to the position signal to the corresponding motor drive components.

[0020] In one embodiment, the command parsing component includes at least a protocol parsing circuit and a control signal generation circuit, and the motor drive component includes at least a power amplifier circuit.

[0021] In one embodiment, the command parsing component further includes a direction switching circuit, which includes a register, a first subtractor, a second subtractor, and a comparator. The register is used to store the rotation step length corresponding to one revolution of the filter wheel.

[0022] The input terminal of the first subtractor is connected to the output terminal of the protocol parsing circuit and the register. The first subtractor is used to output the first target rotation step of the motor in the first direction corresponding to the position signal.

[0023] The input terminal of the second subtractor is connected to the output terminal of the protocol parsing circuit and the register. The second subtractor is used to output the second target rotation step of the motor in the second direction corresponding to the position signal.

[0024] The input terminal of the comparator is connected to the output terminals of the first subtractor and the second subtractor, and the comparator is used to output the target difference signal;

[0025] The input terminal of the control signal generation circuit is connected to the output terminal of the comparator. The control signal generation circuit receives the target difference signal and outputs a motor control signal in the first direction; or, the control signal generation circuit receives a non-target difference signal and outputs a motor control signal in the second direction.

[0026] In one embodiment, the field-programmable gate array further includes:

[0027] An image transmitting component is connected to the host computer and the sensor driving component. The command parsing component is used to receive the image transmission signal sent by the host computer and send the sensor control signal corresponding to the image transmission signal to the sensor driving component. The image transmitting component is used to receive the image signal corresponding to the light signal sent by the sensor driving component. The host computer is used to receive the image signal sent by the image transmitting component.

[0028] In one embodiment, the command parsing component and the image sending component are connected to the host computer via a physical channel.

[0029] In the aforementioned optical inspection system, a host computer is connected to a field-programmable gate array (FPGA). The FPGA is connected to the image sensor of an imaging colorimeter via a sensor driver component. The FPGA is connected to multiple motors via multiple independent motor driver components, and each motor drives the corresponding filter support structure through a linkage mechanism. The imaging colorimeter imports the light signal of the optical component under test into the system through its lens, and each set of filters is mounted on an independent support structure. Multiple independent motor driver components output motor control signals in parallel, enabling multiple sets of filters to switch synchronously under motor drive, moving the required target filter onto the optical path of the light signal. This significantly improves the configuration efficiency of the filter combination, enabling the light signal to pass through a specific filter combination to the image sensor, avoiding the time loss of traditional time-division switching, and improving the optical inspection efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an optical detection system according to an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of an optical detection system according to another embodiment of this application.

[0032] Figure 3 This is a schematic diagram of a command parsing component in one embodiment of this application.

[0033] Figure 4 This is a schematic diagram of a command parsing component in another embodiment of this application.

[0034] Figure label:

[0035] 0. Optical inspection system; 01. Imaging colorimeter; 011. Lens; 012. Image sensor; 013. Filter group; 013A. Colored filter group; 013B. Attenuation filter; 02. Motor; 02A. First motor; 02B. Second motor; 03. Field programmable gate array; 031. Sensor driving component; 032. Motor driving component; 032A. First motor driving component; 032B. Second motor driving component; 033. Command parsing component; 0331. Protocol parsing circuit; 0332. Control signal generation circuit; 0333. Direction switching circuit; 034. Image transmission component; 04. Host computer. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0042] In related technologies, multiple motor control signals are usually sent sequentially to multiple motors used to switch filters through an MCU (Microcontroller Unit) chip, which has poor stability and long switching time.

[0043] Based on this, in one embodiment, please refer to Figure 1 An optical detection system 0 is provided, comprising: an imaging colorimeter 01, multiple motors 02, and a linkage mechanism for each of the multiple motors 02. Figure 1 (not shown in the image), Field Programmable Gate Array 03 and Host Computer 04, wherein:

[0044] An imaging colorimeter 01 includes a lens 011, an image sensor 012, multiple sets of filters 013, and a support structure for each set of filters 013. Figure 1 (Not shown in the image), Lens 011 is used to acquire data from the optical component under test ( Figure 1 The optical signal (not shown) passes through multiple sets of filters 013 to the image sensor 012.

[0045] The optical components under test include, but are not limited to, flat panel display components such as liquid crystal panels and organic light-emitting diode (OLED) panels, or optical display components such as vertical-cavity surface-emitting laser (VCSEL) arrays and laser diode (LD) arrays. Image sensor 012 can be a CMOS image sensor.

[0046] For example, multiple sets of filters 013 can be disposed between the lens 011 and the image sensor 012, and arranged sequentially along the direction from the lens 011 toward the image sensor 012. After the light signal of the optical component under test is collected by the lens 011, the light path of the light signal can sequentially pass through at least one filter of each set of filters 013 to the image sensor 012. For example, as Figure 1 As shown, the optical path of the optical signal can first pass through at least one filter in filter group 1, and then through at least one filter in filter group n to the image sensor 012. In one possible implementation, each filter group 013 may include multiple filters used at different times.

[0047] The linkage mechanism of each of the multiple motors 02 is connected to the corresponding support structure. Each motor 02 is used to drive the support structure to move through the corresponding linkage mechanism, so as to move the target filter in each group of filters 013. Figure 1 (Not shown in the image) moves synchronously onto the optical path of the optical signal.

[0048] For example, the linkage mechanism can be connected one-to-one with the support structure. Multiple motors 02 can be used to drive the corresponding support structure to move synchronously to the target position through their respective linkage mechanisms, so as to move the target filter in each group of filters 013 synchronously to the optical path of the optical signal.

[0049] In one possible implementation, the supporting structure can be a linear slide. Each set of filters 013 includes multiple filters arranged along the guide rail of its respective linear slide. Each motor 02 can be used to drive the linear slide to reciprocate on the guide rail via a corresponding linkage mechanism.

[0050] The field-programmable gate array 03 includes a sensor driving component 031 and multiple motor driving components 032. The sensor driving component 031 is connected to an image sensor 012, and the multiple motor driving components 032 are respectively connected to multiple motors 02. The sensor driving component 032 is used to receive image signals corresponding to light signals sent by the image sensor 012.

[0051] The image sensor 012 can be connected to the interface circuit in the sensor driver assembly 031 via a flexible flat cable. The motor 02 can be connected to the interface circuit in the motor driver assembly 032 via a wired circuit. Multiple motor driver assemblies 032 can be connected one-to-one with multiple motors 02.

[0052] For example, the multiple motor drive components 032 in the Field Programmable Gate Array (FPGA) 03 can be independent hardware circuits with parallel characteristics.

[0053] The host computer 04 is connected to the sensor drive assembly 031 and multiple motor drive assemblies 032. The host computer 04 is used to receive image signals sent by the sensor drive assembly 031.

[0054] For example, the host computer 04 is electrically connected to multiple motor drive components 032. First, the host computer 04 can send signals to the multiple motor drive components 032, causing them to simultaneously output motor control signals. These signals control multiple motors 02 to drive the supporting structure through their respective linkage mechanisms, synchronously moving the target filters in the multiple sets of filters 013 onto the optical path of the light signal collected by the lens 011. The host computer 04 is also electrically connected to a sensor drive component 031. Then, the sensor drive component 031 can receive the image signal corresponding to the light signal sent by the image sensor 012, and the host computer 04 can receive this image signal sent by the sensor drive component 031.

[0055] In one possible implementation, the motor drive component 032 can be used to receive the enable signal from the host computer 04 and output a motor control signal during the duration of the enable signal to control the motor to drive the corresponding load-bearing structure to move to the target position through the corresponding linkage mechanism.

[0056] In the above embodiments, the host computer is connected to the field-programmable gate array (FPGA); the FPGA is connected to the image sensor of the imaging colorimeter through a sensor driving component; the FPGA is connected to multiple motors through multiple independent motor driving components, and each motor drives the corresponding filter support structure to move through a linkage mechanism; the imaging colorimeter guides the light signal of the optical component under test into the system through the lens, and each set of filters is mounted on an independent support structure. Multiple independent motor driving components output motor control signals in parallel, so that multiple sets of filters can be switched synchronously under motor drive, moving the required target filter to the optical path of the light signal, which greatly improves the configuration efficiency of the filter combination, realizes that the light signal passes through a specific filter combination to the image sensor, avoids the time loss of traditional time-division switching, and improves the optical detection efficiency.

[0057] In some embodiments, the above-mentioned support structure can be a filter wheel, with each group of filters arranged around the axis of the filter wheel on its respective filter wheel, and each motor used to drive the filter wheel to rotate around the axis through a corresponding linkage mechanism.

[0058] The linkage mechanism may include gears and belts. The filter wheel may be disc-shaped. When the motor drives the filter wheel to rotate around the axis through gears and belts, the various filters set on the filter wheel can be switched in turn to the optical path of the optical signal.

[0059] In some embodiments, the types of filters in different groups of the plurality of filters described above may be different.

[0060] Among these multiple filter groups, the filters within the same group are of the same type but differ in their optical parameters. Different types of filters include, but are not limited to, neutral density filters, polarizing filters, and interference filters. Different optical parameters include, but are not limited to, center wavelength, cutoff depth, and cutoff wavelength.

[0061] In some embodiments, the plurality of filters described above includes at least one set of colored filters and one set of attenuation filters.

[0062] Colored filters are used for colorimetric measurements. Attenuation filters are used to increase dynamic range. Different intensities of the optical signal from the optical component under test require different target attenuation filters. Different attenuation filters have different attenuation coefficients.

[0063] Combination Figure 2 As shown, Figure 2 A schematic diagram of an optical detection system according to another embodiment of this application is shown. In some embodiments, the plurality of motors 02 include a first motor 02A and a second motor 02B, and the plurality of motor drive components 032 include a first motor drive component 032A connected to the first motor 02A and a second motor drive component 032B connected to the second motor 02B.

[0064] The linkage mechanism of the first motor 02A ( Figure 2 (Not shown), a support structure connecting a set of colored filters 013A ( Figure 2 (not shown);

[0065] The linkage mechanism of the second motor 02B ( Figure 2 (Not shown) The supporting structure that connects a set of attenuation filter 013B.

[0066] In this way, by controlling the first motor and the second motor in parallel through independent first motor drive components and second motor drive components, it is possible to simultaneously switch different combinations of colored filters and different attenuation filters onto the optical path of the optical signal.

[0067] In some embodiments, please refer to Figure 2 The above-mentioned field-programmable gate array may also include:

[0068] Command parsing component 033 is connected to host computer 04 and multiple motor drive components 032. Command parsing component 033 is used to receive position signals sent by host computer 04 and send the multiple motor control signals corresponding to the position signals to the corresponding motor drive components respectively.

[0069] The command parsing component 033 can be connected to multiple motor drive components 032 via wired cables. The position signals are combined signals, including position signals corresponding to each group of filters. For example, the command parsing component 033 can receive the first position signal corresponding to the colored filter group 013A and the second position signal corresponding to the attenuation filter group 013B sent by the host computer 04, and simultaneously send the motor control signals corresponding to the first and second position signals to the first motor drive component 032A and the second motor drive component 032B.

[0070] Optionally, the command parsing component 033 mentioned above includes at least a protocol parsing circuit 0331 and a control signal generation circuit 0332 (e.g., ...). Figure 3 As shown), the motor drive assembly 032 includes at least a power amplifier circuit.

[0071] The command parsing component 033 can be connected to the host computer 04 via a high-speed communication interface to receive position signals. The protocol parsing circuit 0331 can be connected to the high-speed communication interface and can be implemented based on a serial-to-parallel converter and a state machine. The control signal generation circuit 0332 can be connected to the protocol parsing circuit 0331 and can be implemented based on a lookup table and a counter. The motor drive component 032 can be connected to the control signal generation circuit 0332 via a power amplifier circuit to receive motor control signals and send the required high-power motor control signals to the motor through an interface circuit. The power amplifier circuit can be implemented based on an H-bridge drive circuit, and the communication protocol of the interface circuit can be RS485 (Recommended Standard 485). Specifically, the protocol parsing circuit 0331 can be a USB protocol parsing circuit, a TCP / IP protocol parsing circuit, etc. The motor control signal output by the control signal generation circuit 0332 can be a PWM (Pulse Width Modulation) signal.

[0072] Optionally, the command parsing component further includes a direction switching circuit 0333, which includes a register, a first subtractor, a second subtractor, and a comparator (e.g., Figure 4 As shown in the figure, the register is used to store the rotation step size corresponding to one revolution of the filter wheel;

[0073] The input of the first subtractor is connected to the output of the protocol parsing circuit 0331 and the register. The first subtractor is used to output the first target rotation step of the motor in the first direction corresponding to the position signal.

[0074] The input of the second subtractor is connected to the output of the protocol parsing circuit 0331 and the register. The second subtractor is used to output the second target rotation step of the motor in the second direction corresponding to the position signal.

[0075] The input of the comparator is connected to the output of the first subtractor and the second subtractor. The comparator is used to output the target difference signal.

[0076] The input terminal of the control signal generation circuit 0332 is connected to the output terminal of the comparator. The control signal generation circuit 0332 receives the target difference signal and outputs the motor control signal in the first direction. Alternatively, the control signal generation circuit 0332 receives the non-target difference signal and outputs the motor control signal in the second direction.

[0077] The first target rotation step size can be the forward target rotation step size of the motor, and the second target rotation step size can be the reverse target rotation step size of the motor. The first target rotation step size can be the sum of the difference between the motor steps corresponding to the target position and the motor steps corresponding to the current position, and the total number of steps required for one rotation of the filter wheel. The second target rotation step size can be the sum of the difference between the motor steps corresponding to the current position and the motor steps corresponding to the target position, and the total number of steps required for one rotation of the filter wheel. The target difference signal indicates that the difference between the first and second target rotation step sizes is less than or equal to zero; the non-target difference signal indicates that the difference between the first and second target rotation step sizes is greater than zero. This allows for a further reduction in the time required to move the target filter onto the optical path of the optical signal.

[0078] In some embodiments, please refer to Figure 2 The above-mentioned field-programmable gate array may also include:

[0079] Image transmission component 034 is connected to host computer 04 and sensor driver component 031. Command parsing component 033 is used to receive image transmission signals sent by host computer 04 and send sensor control signals corresponding to the image transmission signals to sensor driver component 031. Image transmission component 034 is used to receive image signals corresponding to light signals sent by sensor driver component 031. Host computer 04 is used to receive image signals sent by image transmission component 034.

[0080] The command parsing component 033 can be connected to the sensor driving component 031 via a wired cable. First, the host computer 04 can send an image transmission signal to the command parsing component 033. The sensor driving component 031 can receive the corresponding sensor control signal from this image transmission signal, controlling the image sensor 012 to perform exposure and image acquisition. The sensor driving component 031 can also receive the image signal corresponding to the light signal sent by the image sensor 012. The image sending component 034 can be connected to the sensor driving component 031 via a wired cable. Then, the sensor driving component 031 can receive the image signal sent by the image sensor 012, and the host computer 04 can also receive the image signal sent by the sensor driving component.

[0081] Optionally, the command parsing component 033 and the image sending component 034 are connected to the host computer 04 via a physical channel.

[0082] The physical channels include, but are not limited to, USB, network, and coaxial. The host computer 04 can output the optical characteristic parameters of the optical component under test (including: chromaticity, brightness, uniformity, etc.). This improves the stability of the detection.

[0083] In summary, in the aforementioned optical inspection system, the host computer is connected to a field-programmable gate array (FPGA); the FPGA is connected to the image sensor of the imaging colorimeter via a sensor driver component; the FPGA is connected to multiple motors via multiple independent motor driver components, and each motor drives the corresponding filter support structure to move through a linkage mechanism; the imaging colorimeter imports the light signal of the optical component under test into the system through its lens, and each set of filters is mounted on an independent support structure. Multiple independent motor driver components output motor control signals in parallel, enabling multiple sets of filters to switch synchronously under motor drive, moving the required target filter onto the optical path of the light signal, significantly improving the configuration efficiency of the filter combination, realizing that the light signal passes through a specific filter combination to the image sensor, avoiding the time loss of traditional time-division switching, and improving the optical inspection efficiency.

[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An optical detection system, characterized in that, include: An imaging colorimeter includes a lens, an image sensor, multiple sets of filters, and a support structure for each set of filters. The lens is used to collect the optical signal of the optical component under test, and the optical signal passes through the multiple sets of filters in sequence to the image sensor. Multiple motors; The linkage mechanism of each of the plurality of motors is connected to the corresponding support structure. Each motor is used to drive the support structure to move through the corresponding linkage mechanism, so as to synchronously move the target filter in each group of filters to the optical path of the optical signal. A field-programmable gate array includes a sensor driving component and multiple motor driving components. The sensor driving component is connected to the image sensor, and the multiple motor driving components are respectively connected to the multiple motors. The sensor driving component is used to receive an image signal corresponding to the light signal sent by the image sensor. A host computer is connected to the sensor driving component and the plurality of motor driving components. The host computer is used to receive the image signal sent by the sensor driving component.

2. The optical detection system according to claim 1, characterized in that, The supporting structure is a filter wheel, and each set of filters is arranged around the axis of the filter wheel on its respective filter wheel. Each motor is used to drive the filter wheel to rotate around the axis through a corresponding linkage mechanism.

3. The optical detection system according to claim 1 or 2, characterized in that, The different groups of filters contain different types of filters.

4. The optical detection system according to claim 3, characterized in that, The plurality of filters includes at least one set of colored filters and one set of attenuating filters.

5. The optical detection system according to claim 4, characterized in that, The plurality of motors includes a first motor and a second motor, and the plurality of motor drive components includes a first motor drive component connected to the first motor and a second motor drive component connected to the second motor; The linkage mechanism of the first motor is connected to the support structure of a set of colored filters; The linkage mechanism of the second motor is connected to the support structure of a set of attenuation filters.

6. The optical detection system according to claim 2, characterized in that, The field-programmable gate array also includes: The command parsing component connects the host computer and the multiple motor drive components. The command parsing component is used to receive the position signal sent by the host computer and send the multiple motor control signals corresponding to the position signal to the corresponding motor drive components.

7. The optical detection system according to claim 6, characterized in that, The command parsing component includes at least a protocol parsing circuit and a control signal generation circuit, and the motor drive component includes at least a power amplifier circuit.

8. The optical detection system according to claim 7, characterized in that, The command parsing component also includes a direction switching circuit, which includes a register, a first subtractor, a second subtractor, and a comparator. The register is used to store the rotation step length corresponding to one revolution of the filter wheel. The input terminal of the first subtractor is connected to the output terminal of the protocol parsing circuit and the register. The first subtractor is used to output the first target rotation step of the motor in the first direction corresponding to the position signal. The input terminal of the second subtractor is connected to the output terminal of the protocol parsing circuit and the register. The second subtractor is used to output the second target rotation step of the motor in the second direction corresponding to the position signal. The input terminal of the comparator is connected to the output terminals of the first subtractor and the second subtractor, and the comparator is used to output the target difference signal; The input terminal of the control signal generation circuit is connected to the output terminal of the comparator. The control signal generation circuit receives the target difference signal and outputs a motor control signal in the first direction; or, the control signal generation circuit receives a non-target difference signal and outputs a motor control signal in the second direction.

9. The optical detection system according to any one of claims 6 to 8, characterized in that, The field-programmable gate array also includes: An image transmitting component is connected to the host computer and the sensor driving component. The command parsing component is used to receive the image transmission signal sent by the host computer and send the sensor control signal corresponding to the image transmission signal to the sensor driving component. The image transmitting component is used to receive the image signal corresponding to the light signal sent by the sensor driving component. The host computer is used to receive the image signal sent by the image transmitting component.

10. The optical detection system according to claim 9, characterized in that, The command parsing component and the image sending component are connected to the host computer via a physical channel.

Images