Fluorescent endoscope system capable of reducing temperature rise of handle

Abstract

The utility model relates to a fluorescent endoscope system capable of reducing temperature rise of a handle, which comprises a light source emitter used for emitting visible light and exciting light, the handle and a host, the handle comprises a lens assembly and an image sensing module, and the image sensing module comprises at least one visible light sensor and at least one fluorescent sensor; the host is used for receiving a visible light frame and a fluorescence frame, obtaining a fluorescence intensity value of the fluorescence frame, and controlling the fluorescence sensor to enter a standby state when the host selects a visible light mode; when the host selects a fusion mode, when the duration time that the fluorescence intensity value of the fluorescence frame is smaller than a preset value is longer than a preset time period, the fluorescence sensor is controlled to enter a discontinuous wake-up state from a normal state, and when the fluorescence intensity value of the fluorescence frame is larger than the preset value in the preset time period, the fluorescence sensor is controlled to enter the discontinuous wake-up state from the normal state. The fluorescent sensor is controlled to enter a normal state from an intermittent awakening state, so that the power consumption of the handle is reduced, and the temperature rise of the handle is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of fluorescent endoscopes, and in particular to a fluorescent endoscope system capable of reducing the temperature rise of a handle. Background Art

[0002] Fluorescence endoscope is a new type of diagnostic equipment that uses laser intrinsic fluorescence spectroscopy technology to enter the cavity for diagnosis through various endoscopes. Fluorescence endoscopes automatically identify and diagnose based on the intrinsic fluorescence spectral characteristics of human tissues, which can indicate whether the tested tissue is normal tissue, distinguish between benign and malignant lesions of the tested tissue, and improve the diagnosis rate of early cancer and dysplasia. One of the existing common fluorescence endoscopes is a dual-channel image sensor structure, one for white light and one for fluorescence, and then the two are fused; 3D fluorescence optical scopes use a 4-channel image sensor structure, each two channels are equivalent to ordinary fluorescence endoscopes, and finally the two fluorescence signals are fused into 3D signals. 3D images can better help doctors perform surgery. As the requirements for images in surgery become higher and higher, 4K fluorescence images have become the norm, and 4K3D fluorescence images are becoming more and more common, which places higher and higher requirements on the cooling method of the handle.

[0003] In 3D fluorescence optical microscope systems, the contradiction between the compact size of the handle and the high resolution of the image and the high power consumption of the handle is becoming more and more prominent. Especially in the 4K3D optical microscope fluorescence system, the contradiction between the size of the handle and the temperature rise is more prominent. A large size and low temperature rise are inconvenient for doctors to hold, while a small size and high temperature rise make it difficult for doctors to hold. Therefore, in the field of 3D fluorescence optical microscopes, especially 4K3D fluorescence optical microscopes, a small and temperature-appropriate handle is an urgent need for doctors. Utility Model Content

[0004] Based on this, it is necessary to provide a fluorescent endoscope system that reduces the temperature rise of the handle in order to solve the above technical problems.

[0005] The utility model provides a fluorescent endoscope system for reducing the temperature rise of a handle, comprising a handle, a host and a light source transmitter, wherein the handle and the host are communicatively connected, and the light source transmitter is used to emit visible light and excitation light and transmit the light to the illuminated object through the handle; the handle comprises a lens assembly and an image sensing module, wherein the image sensing module comprises at least one visible light sensor and at least one fluorescence sensor; the visible light sensor is used to receive the visible light reflected by the illuminated object and generate a visible light frame; the fluorescence sensor is used to receive the fluorescence excited by the illuminated object and generate a fluorescence frame;

[0006] The host is used to receive the visible light frame and the fluorescent frame, obtain the fluorescence intensity value of the fluorescent frame, and when the host selects the fusion mode, when the duration of the fluorescence intensity value of the fluorescent frame being less than a preset value is greater than a preset period of time, control the fluorescence sensor to enter the intermittent wake-up state from the normal state, and when the fluorescence intensity value of the fluorescent frame is greater than the preset value within the preset period of time, control the fluorescence sensor to enter the normal state from the intermittent wake-up state; the host is also used to output a fused image after fusing the visible light frame and the fluorescent frame.

[0007] In one embodiment, the host is further configured to:

[0008] After the fluorescence sensor enters the normal state from the intermittent awake state, if the duration of the fluorescence intensity value of the fluorescence frame being less than the preset value is greater than the preset period, the fluorescence sensor is controlled to enter the intermittent awake state from the normal state.

[0009] In one of the embodiments, the host is also used to: when the host selects the visible light mode, control the fluorescence sensor to enter a standby state and output a visible light image after processing the visible light frame; when the host selects the fluorescence mode, control the visible light sensor to enter a standby state and output a fluorescence image after processing the fluorescence frame.

[0010] In one embodiment, the handle further comprises an image driver, and the image driver is communicatively connected with the image sensing module; the host is used to send a control signal to the image driver, and the image driver receives the control signal and sends it to the image sensing module;

[0011] The image sensing module is used to receive the control signal and control the fluorescence sensor and the visible light sensor to enter different working states.

[0012] In one of the embodiments, the image driver is further used to send a real-time synchronization signal to the image sensing module;

[0013] The image sensing module is used to receive the real-time synchronization signal and transmit the visible light frame and the fluorescent frame to the host in real-time and synchronous manner.

[0014] In one of the embodiments, the image driver is further used to send a delayed synchronization signal to the image sensor module;

[0015] The image sensing module is used to receive the delayed synchronization signal and transmit the visible light frame and the fluorescent frame to the host in a delayed and synchronous manner.

[0016] In one embodiment, the host is further used to send a configuration signal to the image driver, and the image driver receives the configuration signal and sends it to the image sensor module;

[0017] The image sensing module is used to receive the configuration signal and generate visible light frames and fluorescent frames in corresponding formats according to the configuration information contained in the configuration signal; wherein the configuration information includes but is not limited to: frame rate, resolution and exposure parameters.

[0018] In one embodiment, the lens assembly includes a mirror rod, a lens, and a filter set; one end of the mirror rod is connected to the light source generator, and the other end of the mirror rod is connected to the lens;

[0019] The mirror rod is used to transmit the visible light and excitation light emitted by the light source emitter to the illuminated object, so that the fluorescent substance in the illuminated object is excited by the excitation light to generate fluorescence; and transmit the visible light, excitation light and generated fluorescence reflected by the illuminated object to the lens;

[0020] The lens is used to receive the visible light, the excitation light and the generated fluorescence reflected by the illuminated object, and transmit the visible light, the excitation light and the fluorescence to the filter set;

[0021] The first filter in the filter set is used to filter the excitation light and the fluorescence, and transmit the visible light to the visible light sensor;

[0022] The second filter in the filter set is used to filter the excitation light and visible light, and transmit the fluorescence to the fluorescence sensor.

[0023] In one embodiment, the host includes an image processor and a controller; the image processor is communicatively connected to the image sensor module, and the controller is communicatively connected to the image driver;

[0024] The controller is used to send a signal to the image driver to control the operation of the image sensor module;

[0025] The image processor is used to obtain a visible light image after processing the visible light frame, and to obtain a fluorescent image after processing the fluorescent frame.

[0026] In one of the embodiments, the image processor is further configured to perform fluorescence fusion processing on the visible light image and the fluorescence image when the host selects a fusion mode.

[0027] The fluorescent endoscope system provided by the utility model comprises a handle, a host and a light source transmitter, wherein the handle is communicatively connected with the host, and the light source transmitter is used to emit visible light and excitation light and transmit the light to the illuminated object through the handle; the handle comprises a lens assembly and an image sensing module, wherein the image sensing module comprises at least one visible light sensor and at least one fluorescence sensor; the visible light sensor is used to receive the visible light reflected by the illuminated object and generate a visible light frame; the fluorescence sensor is used to receive the fluorescence excited by the illuminated object and generate a fluorescence frame; the host is used to receive the visible light frame and the fluorescence frame, obtain the fluorescence intensity value of the fluorescence frame, when the host selects a fusion mode, when the duration of the fluorescence intensity value of the fluorescence frame being less than a preset value is greater than a preset period, control the fluorescence sensor to enter an intermittent wake-up state from a normal state, and when the fluorescence intensity value of the fluorescence frame is greater than the preset value within the preset period, control the fluorescence sensor to enter a normal state from an intermittent wake-up state; the host is also used to fuse the visible light frame and the fluorescence frame and output a fused image. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 is a block diagram of a fluorescence endoscope system in one embodiment;

[0030] Figure 2 is a block diagram of a fluorescence endoscope system in another embodiment;

[0031] Figure 3 is a block diagram of a fluorescence endoscope system in another embodiment;

[0032] Figure 4 is a structural block diagram of a fluorescence endoscope system in another embodiment.

[0033] Among them, 10, handle; 20, host; 30, light source transmitter; 11, lens assembly; 12, image sensor module; 13, image driver; 21, image processor; 22, controller; 111, mirror rod; 112, lens; 113, filter set. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the contents disclosed in the present application, some changes such as design, manufacturing or production based on the technical contents disclosed in the present application are only conventional technical means, and should not be understood as insufficient contents disclosed in the present application.

[0035] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0036] See also Figure 1 The utility model provides a fluorescent endoscope system for reducing the temperature rise of the handle, including a handle 10, a host 20 and a light source transmitter 30. The handle 10 and the host 20 are connected in communication, which can be through a cable or an optical fiber cable. Preferably, an optical fiber cable with low power consumption is used. The light source transmitter 30 is used to emit visible light and excitation light and transmit them to the illuminated object through the handle; the illuminated object releases fluorescence under certain conditions when stimulated by the excitation light; the handle 10 includes a lens assembly 11 and an image sensing module 12, wherein the image sensing module 12 includes at least one visible light sensor and at least one fluorescence sensor; the visible light sensor is used to receive the visible light reflected by the illuminated object, and the visible light band generates a visible light frame after photoelectric conversion; the fluorescence sensor is used to receive the fluorescence excited by the illuminated object, and the fluorescence band generates a fluorescence frame after photoelectric conversion.

[0037] The host 20 is used to receive the visible light frame and the fluorescent frame, and obtain the fluorescence intensity value of the fluorescent frame. When the host selects the fusion mode, when the fluorescence intensity value of the fluorescent frame is less than the preset value for a duration greater than the preset period, the fluorescent sensor is controlled to enter the intermittent wake-up state from the normal state, and when the fluorescence intensity value of the fluorescent frame is greater than the preset value within the preset period, the fluorescent sensor is controlled to enter the normal state from the intermittent wake-up state; the host is also used to output a fused image after fusing the visible light frame and the fluorescent frame.

[0038] The host 20 in the present application can control the output mode of the selected image, which includes three image output modes, namely visible light mode, fluorescence mode and fusion mode. Among them, the visible light mode is to output a visible light image, the fluorescence mode is to output a fluorescence image, and the fusion mode is to output a fused image after the visible light image and the fluorescence image are fused.

[0039] When the host 20 selects the visible light mode, the host 20 controls the fluorescence sensor to enter the standby state, at which time the fluorescence sensor does not work, and the host receives the visible light frame generated by the visible light sensor, and processes the visible light frame to output a visible light image. Since the fluorescence sensor enters the standby mode, it has the characteristics of extremely low power consumption, which reduces the power consumption of the handle and thus reduces the temperature rise of the handle; when the host 20 selects the fluorescence mode, the host 20 controls the visible light sensor to enter the standby state, at which time the visible light sensor does not work, and the fluorescence sensor enters the normal working state, at which time the host receives the fluorescence frame generated by the fluorescence sensor, and processes the fluorescence frame to output a fluorescence image; when the host 20 selects the fusion mode, the host 20 controls the visible light sensor and the fluorescence sensor to maintain a normal working state, and when the duration of the fluorescence intensity value of the fluorescence frame being less than the preset value is greater than the preset period, the host controls the fluorescence sensor to enter the intermittent wake-up state from the normal state, and when the fluorescence intensity value of the fluorescence frame is greater than the preset value within the preset period, the host controls the fluorescence sensor to enter the normal state from the intermittent wake-up state. The host is also used to fuse the visible light image and the fluorescence image and output a fused image.

[0040] It should be noted that the relevant method implemented by the host 20 in the fluorescent endoscope system of the present invention to obtain the situation where the fluorescence intensity value of the fluorescence frame is greater than the preset value within the preset time period and the duration when the fluorescence intensity value of the fluorescence frame is less than the preset value is greater than the preset time period is prior art.

[0041] The host 20 of the present application controls the fluorescence sensor and the visible light sensor to enter the corresponding standby state when selecting different image output modes, and when the host 20 selects the fusion mode, when the fluorescence intensity value of the fluorescence frame is less than the preset value for a duration greater than the preset period, the fluorescence sensor is controlled to enter the intermittent wake-up state from the normal state, and when the fluorescence intensity value of the fluorescence frame is greater than the preset value within the preset period, the fluorescence sensor is controlled to enter the normal state, so as to prevent the fluorescence sensor from being in the working state all the time when there is no fluorescence demand in the actual operation but the image output mode is not switched, thereby reducing the power consumption of the handle and thus reducing the temperature rise of the handle. In the normal mode, it generally takes 1 to 2 hours for the temperature rise of the handle to go from a small state to an unacceptable level for the doctor (more than 41°C), and in a surgery of several hours, the duration of fluorescence use is generally between 20 and 30 minutes, which ensures that the temperature rise of the handle during the use of the fluorescence function by the doctor is also within an acceptable range. The image sensor switches from the standby mode to the normal output in generally a few milliseconds, which ensures that the function switching of the fluorescence endoscope system of the present application does not substantially affect the normal operation.

[0042] In one of the embodiments, the host is further used to: when the fluorescence sensor enters a normal state, if the duration of the fluorescence intensity value of the fluorescence frame being less than the preset value is greater than the preset period of time, control the fluorescence sensor to enter an intermittent wake-up state.

[0043] In the present embodiment, when the host 20 selects the fluorescence mode or the fusion mode, after controlling the fluorescence sensor to enter the normal state from the intermittent wake-up state, when the duration of the fluorescence intensity value of the fluorescence frame being less than the preset value is greater than the preset period of time, it indicates that the illuminated object has no fluorescent substance. The host 20 controls the fluorescence sensor to enter the intermittent wake-up state from the normal state, thereby further reducing the power consumption of the handle and thus reducing the temperature rise of the handle.

[0044] In one of the embodiments, the host 20 is also used to control the fluorescence sensor to enter a standby state and output a visible light image after processing the visible light frame when the host 20 selects the visible light mode; when the host 20 selects the fluorescence mode, control the visible light sensor to enter a standby state and output a fluorescence image after processing the fluorescence frame.

[0045] In this embodiment, when the host 20 selects the visible light mode, the host controls the fluorescent sensor to enter the standby state, at which time the fluorescent sensor does not work. At this time, the host 20 receives the visible light frame generated by the visible light sensor, processes the visible light frame and outputs a visible light image. Since the fluorescent sensor enters the standby mode, it has the characteristics of extremely low power consumption, which reduces the power consumption of the handle and thus reduces the temperature rise of the handle.

[0046] In one embodiment, see Figure 2 The handle also includes an image driver 13, which is communicatively connected to the image sensor module 12; the host 20 is used to send a control signal to the image driver 13, and the image driver 13 receives the control signal and sends it to the image sensor module 12; the image sensor module 12 is used to receive the control signal to control the fluorescence sensor and the visible light sensor to enter different working states.

[0047] In the present application, the image sensor module 12 may include two 4K visible light sensors and two 4K fluorescence sensors. In the fluorescence optical system, the synchronization requirements of the four image sensors are relatively high, so the image frames output by the sensors require real-time synchronization. In one embodiment, the image driver 13 is also used to send a real-time synchronization signal to the image sensor module 12, and the image sensor module 12 is used to receive the real-time synchronization signal and transmit the visible light frame and the fluorescence frame to the host 20 in real-time synchronization, thereby ensuring the synchronous transmission of each image sensor and improving the effect of subsequent image fluorescence fusion.

[0048] In one of the embodiments, the output timing of each image can be adjusted according to actual conditions to control the delayed synchronization data of the four image sensors. The image driver 13 is also used to send a real-time synchronization signal to the image sensor module 12; the image sensor module 12 is used to receive the delayed synchronization signal and delay the transmission of the visible light frame and the fluorescent frame to the host.

[0049] The four image sensors in this embodiment are all in slave mode, that is, the output timing of the four image sensors is controlled by the image driver. The image driver 13 outputs four PWM (pulse width modulation) synchronization signals to control the four image sensors respectively. This PWM signal can be used as a field synchronization signal. For example, if the PWM is 60Hz, the image sensor starts to output image data after receiving this signal. It can also be other synchronization signals. In this embodiment, all image sensors are in slave mode, and a certain image sensor can be put in standby mode at any time without affecting the synchronous output of other image sensors. In fluorescence fusion technology, sometimes the delay of the fluorescence path and the white light path is different due to differences in hardware links, algorithms, etc., which reflects the advantages of the slave mode. This embodiment can adjust the output delay of each path according to actual tests to achieve synchronization; or when the fluorescence path and the white light path are required to have a certain time difference for output, the slave mode can also be adjusted according to different needs.

[0050] In one embodiment, the host 20 is also used to send a configuration signal to the image driver 13, and the image driver 13 receives the configuration signal and sends it to the image sensor module 12; the image sensor module 12 is used to receive the configuration signal and generate visible light frames and fluorescent frames of corresponding formats according to the configuration information contained in the configuration signal; wherein the configuration information includes but is not limited to: frame rate, resolution and exposure parameters.

[0051] In one embodiment, see Figure 3 The lens assembly 11 includes a mirror rod 111, a lens 112 and a filter group 113; one end of the mirror rod 111 is connected to the light source generator 30, and the other end of the mirror rod 111 is connected to the lens 112; the filter group 113 is located on the output light path of the lens 112.

[0052] The mirror rod 111 is used to transmit the visible light and excitation light emitted by the light source generator to the illuminated object, so that the fluorescent substance in the illuminated object is excited by the excitation light to generate fluorescence; and the visible light, excitation light and generated fluorescence reflected by the illuminated object are transmitted to the lens; the lens 112 is used to receive the visible light, excitation light and generated fluorescence reflected by the illuminated object, and transmit the visible light, the excitation light and the fluorescence to the filter group 113; the first filter in the filter group 113 is used to filter the excitation light and the fluorescence, and transmit the visible light to the visible light sensor; the second filter in the filter group 113 is used to filter the excitation light and the visible light, and transmit the fluorescence to the fluorescence sensor.

[0053] In one embodiment, see Figure 4 The host 20 includes an image processor 21 and a controller 22; the image processor is communicatively connected to the image sensing module, and the controller is communicatively connected to the image driver; the controller 22 is used to send a signal to the image driver 13 to control the operation of the image sensing module 12; the image processor 21 is used to process the visible light frame to obtain a visible light image, and to process the fluorescent frame to obtain a fluorescent image.

[0054] In one embodiment, the image processor 21 is further configured to perform fluorescence fusion processing on the visible light image and the fluorescence image to obtain a 3D fluorescence fusion image when the host selects a fusion mode.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0056] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A fluorescent endoscope system for reducing handle temperature rise, characterized in that: The device comprises a handle, a host and a light source transmitter, wherein the handle and the host are in communication connection, and the light source transmitter is used to emit visible light and excitation light and transmit the light to the illuminated object through the handle; the handle comprises a lens assembly and an image sensing module, wherein the image sensing module comprises at least one visible light sensor and at least one fluorescence sensor; the visible light sensor is used to receive the visible light reflected by the illuminated object and generate a visible light frame; the fluorescence sensor is used to receive the fluorescence excited by the illuminated object and generate a fluorescence frame; The host is used to receive the visible light frame and the fluorescent frame, obtain the fluorescence intensity value of the fluorescent frame, and when the host selects the fusion mode, when the duration of the fluorescence intensity value of the fluorescent frame being less than a preset value is greater than a preset period of time, control the fluorescence sensor to enter the intermittent wake-up state from the normal state, and when the fluorescence intensity value of the fluorescent frame is greater than the preset value within the preset period of time, control the fluorescence sensor to enter the normal state from the intermittent wake-up state; the host is also used to output a fused image after fusing the visible light frame and the fluorescent frame.

2. The system according to claim 1, characterized in that The host is also used to: After the fluorescence sensor enters the normal state from the intermittent awake state, if the duration of the fluorescence intensity value of the fluorescence frame being less than the preset value is greater than the preset period, the fluorescence sensor is controlled to enter the intermittent awake state from the normal state.

3. The system according to claim 1, characterized in that The host is also used to: when the host selects the visible light mode, control the fluorescence sensor to enter a standby state and output a visible light image after processing the visible light frame; when the host selects the fluorescence mode, control the visible light sensor to enter a standby state and output a fluorescence image after processing the fluorescence frame.

4. The system according to claim 1, characterized in that The handle further comprises an image driver, which is communicatively connected with the image sensor module; the host is used to send a control signal to the image driver, and the image driver receives the control signal and sends it to the image sensor module; The image sensing module is used to receive the control signal and control the fluorescence sensor and the visible light sensor to enter different working states.

5. The system according to claim 4, characterized in that The image driver is also used to send a real-time synchronization signal to the image sensor module; The image sensing module is used to receive the real-time synchronization signal and transmit the visible light frame and the fluorescent frame to the host in real-time and synchronous manner.

6. The system according to claim 4, characterized in that The image driver is also used to send a delayed synchronization signal to the image sensor module; The image sensing module is used to receive the delayed synchronization signal and transmit the visible light frame and the fluorescent frame to the host in a delayed and synchronous manner.

7. The system according to claim 4, characterized in that The host is further used to send a configuration signal to the image driver, and the image driver receives the configuration signal and sends it to the image sensor module; The image sensing module is used to receive the configuration signal and generate visible light frames and fluorescent frames in corresponding formats according to the configuration information contained in the configuration signal; wherein the configuration information includes but is not limited to: frame rate, resolution and exposure parameters.

8. The system according to claim 1, characterized in that The lens assembly comprises a mirror rod, a lens, and a filter group; one end of the mirror rod is connected to the light source emitter, and the other end of the mirror rod is connected to the lens; The mirror rod is used to transmit the visible light and the excitation light emitted by the light source emitter to the illuminated object, so that the fluorescent substance in the illuminated object is excited by the excitation light to generate fluorescence; and transmitting the visible light reflected by the illuminated object, the excitation light and the generated fluorescence to the lens; The lens is used to receive the visible light, the excitation light and the generated fluorescence reflected by the illuminated object, and transmit the visible light, the excitation light and the fluorescence to the filter set; The first filter in the filter set is used to filter the excitation light and the fluorescence, and transmit the visible light to the visible light sensor; The second filter in the filter set is used to filter the excitation light and visible light, and transmit the fluorescence to the fluorescence sensor.

9. The system according to claim 4, characterized in that The host comprises an image processor and a controller; the image processor is connected in communication with the image sensor module, and the controller is connected in communication with the image driver; The controller is used to send a signal to the image driver to control the operation of the image sensor module; The image processor is used to obtain a visible light image after processing the visible light frame, and to obtain a fluorescent image after processing the fluorescent frame.

10. The system according to claim 9, characterized in that The image processor is also used to perform fluorescence fusion processing on the visible light image and the fluorescence image when the host selects a fusion mode.

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