Light source device and endoscope system

Abstract

The utility model is suitable for the technical field of medical equipment, and provides a light source device and an endoscope system. The light source device comprises a light combination module, a first detection optical fiber, a spectrum sensing module and a light outlet window, the light combining module comprises a plurality of light-emitting elements and a light combining assembly, light beams emitted by the light-emitting elements are combined through the light combining assembly to form combined light, the combined light is emitted out of the light outlet window, and the light outlet window is used for being detachably connected with the connecting part of the mirror body; one end of the first detection optical fiber is arranged on the inner side of the light-emitting window, and the other end is connected with the spectrum sensing module to collect stray light at the edge of the light-emitting window; the spectrum sensing module is used for detecting stray light to obtain first spectrum data. The light source device can autonomously detect the emergent light spectrum, operation of other auxiliary tools and professional maintenance personnel is not needed, the detection efficiency is improved, and manpower and material resources are saved.

Description

Technical Field

[0001] This application belongs to the technical field of medical devices, and particularly relates to a light source device and an endoscope system. Background Art

[0002] As a commonly used medical device, the endoscope system is widely used in the examination of various human organs (such as the stomach, large intestine, chest cavity, bronchus, etc.). The endoscope system generally includes a light source and an endoscope body. During use, the endoscope body is inserted into the organ to be detected, and the light source emits illumination light of different modes (such as white light or special light) into the endoscope body, so that the camera on the endoscope body can capture images of relevant parts inside the organ for doctors to observe. Stable illumination light is the key to obtaining high-quality endoscope images.

[0003] Currently, more and more light sources use a variety of different color light-emitting elements to provide illumination light of a specific mode. To obtain a stable illumination effect, it is necessary to ensure that the light quantity ratio of each color in the emitted light of the light source is stable at a preset ratio corresponding to the mode. Therefore, generally, multiple light quantity sensors are used to monitor the light quantity emitted by each light-emitting element and perform feedback adjustment to achieve a constant emission light quantity of a single light-emitting element. However, the light quantity sensor can only monitor the light quantity emitted by a single light-emitting element and cannot effectively monitor the light output state of the light source. If the optical lens inside the light source deteriorates or its position shifts, it will also cause a change in the light emission spectrum of the light source. Therefore, professional operators often need to use special equipment to detect the light emission spectrum of the light source, which is complex in operation and consumes manpower and material resources. Summary of the Utility Model

[0004] This application provides a light source device and an endoscope system, which can solve the problems of complex detection operation and high consumption of manpower and material resources for the light emission spectrum of the light source in the existing endoscope system.

[0005] In a first aspect, an embodiment of this application provides a light source device, including a light combining module, a first detection optical fiber, a spectral sensing module, and a light output window;

[0006] The light combining module includes a plurality of light-emitting elements and a light combining component. The emission beams of the plurality of light-emitting elements are combined by the light combining component to form a combined light, and the combined light is emitted from the light output window. The light output window is used for detachably connecting to the connecting part of the endoscope body;

[0007] The probe of the first detection optical fiber is arranged inside the light output window, and the other end is connected to the spectral sensing module. The first detection optical fiber is used to collect the stray light at the edge of the light output window and transmit the stray light to the spectral sensing module;

[0008] The spectral sensing module is used to detect the stray light to obtain first spectral data.

[0009] The light source device provided by this application can effectively collect the stray light at the edge of the light output window by arranging the first detection optical fiber at the edge of the light output window without affecting the main lighting optical path. At the same time, the first detection optical fiber transmits the collected stray light to the spectral sensing module for spectral detection to obtain the first spectral data (i.e., the light output spectrum of the light output window, which is also the light output spectrum of the light source device), so as to facilitate subsequent feedback adjustment of the light quantity ratio of the emission beams of each light-emitting element according to the spectral detection result. There is no need to separately set light quantity sensors in each light-emitting element, which greatly simplifies the structure of the light source device. At the same time, there is no need to detect the light output spectrum with the help of special equipment, realizing the autonomous collection of the light output spectrum of the light source device without other auxiliary tools and without the operation of professional maintenance personnel, greatly improving the detection efficiency and saving manpower and material resources.

[0010] In a possible implementation manner, the light combining component includes a light combining part and a light output barrel. One end of the light output barrel is connected to the inner side wall of the light output window, and the probe of the first detection optical fiber is connected to the light output barrel.

[0011] In a possible implementation manner, an installation groove is formed on the light output barrel, and the probe of the first detection optical fiber is fixed in the installation groove.

[0012] In a possible implementation manner, the probe of the first detection optical fiber is in a bent shape and faces the light combining part.

[0013] In a possible implementation manner, the light source device further includes a second detection optical fiber and a detection window;

[0014] The probe of the second detection optical fiber is arranged inside the detection window, and the other end is connected to the spectral sensing module;

[0015] The detection window is used for detachably connecting the insertion part of the mirror body;

[0016] The second detection optical fiber is used for collecting the light emitted from the insertion part and transmitting the collected emitted light to the spectral sensing module;

[0017] The spectral sensing module is further used for detecting the superimposed light of the stray light and the emitted light to obtain the second spectral data.

[0018] The light source device provided by the embodiment of this application, by adding a second detection optical fiber and a detection window, allows the user to connect the insertion part of the mirror body to the detection window to detect the actual spectrum of the light emitted from the mirror body without other auxiliary tools and without the operation of professional maintenance personnel, greatly improving the detection efficiency and saving manpower and material resources.

[0019] In a possible implementation, the detection window is a cylindrical structure, and the insertion part of the mirror body can be inserted into and abutted and fixed within the cylindrical structure.

[0020] In a possible implementation, the light source device further includes a dimming module, and the dimming module is respectively connected to the spectral sensing module and the plurality of light emitting elements;

[0021] The dimming module is configured to drive the light emitting elements to emit light according to the spectral data output by the spectral sensing module.

[0022] In a possible implementation, the light source device further includes a display module, and the dimming module is connected to the display module.

[0023] In a possible implementation, the spectral sensing module includes a concave mirror diffraction grating and a high-precision image sensor.

[0024] In a second aspect, an embodiment of the present application provides an endoscope system, including an image processing device, a display, the light source device described in the first aspect, and a mirror body. Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 Schematic structural diagram of an endoscope system provided by an embodiment of the present application;

[0027] Figure 2 Partial structural schematic diagram of a light source device 1 provided by an embodiment of the present application;

[0028] Figure 3 Overall structural schematic of a light source device 1 provided by an embodiment of the present application;

[0029] Figure 4 Overall cross-sectional view of a light source device 1 provided by an embodiment of the present application;

[0030] Figure 5 Partial enlarged cross-sectional view of a light source device 1 provided by an embodiment of the present application;

[0031] Figure 6 Schematic diagram of an output light spectrum provided by an embodiment of the present application;

[0032] Figure 7Another schematic structural diagram of the endoscope system provided by the embodiment of the present application;

[0033] Figure 8 Another partial structural schematic diagram of the light source device 1 provided by the embodiment of the present application;

[0034] Figure 9 Another overall structural schematic of the light source device 1 provided by the embodiment of the present application. Detailed implementation manners

[0035] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to 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 used to limit the present application.

[0036] See Figures 1 to 5 , which is a schematic structural diagram of the light source device 1 provided by an embodiment of the present application. The light source device 1 includes a light combining module 11, a first detection optical fiber 12, a spectral sensing module 13, and a light output window 15.

[0037] The light combining module 11 includes a plurality of light emitting elements 111 and a light combining component 112. The emission beams of the plurality of light emitting elements 111 are combined by the light combining component 112 to form a combined light, and the combined light is emitted from the light output window 15.

[0038] Among them, the plurality of light emitting elements 111 can be light emitting devices that emit light beams of different colors. For example, a laser diode (LD) or a light emitting diode (LED).

[0039] In one example, the plurality of light emitting elements 111 can include a red LED, a green LED, a blue LED, and a purple LED.

[0040] The light output window 15 is used for detachably connecting to the connecting portion 21 of the lens body 2. Thus, the combined light emitted from the light output window 15 enters the lens body 2 through the connecting portion 21, and after passing through the light guiding component in the lens body 2, it is emitted from the insertion portion 22 of the lens body 2 and irradiates the body cavity into which the insertion portion 22 is inserted.

[0041] The probe 121 of the first detection optical fiber 12 is arranged inside the light output window 15, and the other end is connected to the spectral sensing module 13. The first detection optical fiber 12 is used to collect the stray light at the edge of the light output window 15 and transmit the stray light to the spectral sensing module 13; the spectral sensing module 13 is used to detect the stray light to obtain the first spectral data.

[0042] In one example, the spectral sensing module 13 may at least include a concave mirror diffraction grating and a high-precision image sensor. When stray light enters the spectral sensing module 13, the concave mirror diffraction grating reflects lights with different wavelengths in the stray light to different positions on the high-precision image sensor, so that the high-precision image sensor can accurately collect the brightness values of different wavelengths and obtain the first spectral data. Optionally, the spectral sensing module 13 may also adopt other types of imaging optical elements and optical elements for splitting incident light, and this application does not limit this.

[0043] In the embodiment of this application, by arranging the first detection optical fiber 12 at the edge of the light output window 15, it is possible to effectively collect the stray light at the edge of the light output window 15 without affecting the main illumination light path. At the same time, the first detection optical fiber 12 transmits the collected stray light to the spectral sensing module 13 for spectral detection to obtain the first spectral data. It can be understood that the first spectral data is the light output spectrum of the light output window 15, that is, the light output spectrum of the light source device 1. The light source device 1 provided by the embodiment of this application can independently collect the stray light at the edge of the light output window 15 for detection to obtain the light output spectrum of the light source device 1, without using special equipment or the operation of professional maintenance personnel, greatly improving the detection efficiency and saving manpower and material resources. Moreover, there is no need to separately set light quantity sensors in each light emitting element 111 in the light source device 1, greatly simplifying the structure of the light source device 1.

[0044] It can be understood that as Figure 1 shown, the light source device 1 further includes a housing 18. The light combining module 11, the first detection optical fiber 12, and the spectral sensing module 13 are all encapsulated inside the housing 18. The light output window 15 is opened on the housing 18. The so-called inner side of the light output window 15 refers to the side facing the inside of the housing 18. Correspondingly, the mirror body 2 is externally connected to the outside of the housing 18 through the light output window 15.

[0045] In the embodiment of this application, the probe 121 of the first detection optical fiber 12 can be fixed at the edge of the light output window 15. For example, a fixing groove is opened on the inner wall of the housing 18, and the fixing groove communicates with the side wall of the light output window 15. One end of the first detection optical fiber 12 is arranged in the fixing groove to fix the probe 121 of the first detection optical fiber 12 at the edge of the light output window 15, and collect the stray light at the edge of the light output window 15 without affecting the main illumination light path of the light output window 15.

[0046] Optionally, as Figures 2 to 5As shown, the light combining component 112 includes a light combining part 1121 and a light output barrel 1122. The light output barrel 1122 is arranged inside the light output window 15, and the probe 121 of the first detection optical fiber 12 is connected to the light output barrel 1122. In one example, an installation groove can also be opened on the light output barrel 1122, and the probe 121 of the first detection optical fiber 12 is fixed in the installation groove to fix the probe 121 of the first detection optical fiber 12 at the edge of the light output barrel 1122, so as to collect the stray light at the edge of the light output window 15 without affecting the main illumination optical path of the light output barrel 1122.

[0047] In one example, as Figure 5 shown, the probe 121 of the first detection optical fiber 12 can be set in a bent shape, and the probe 121 is bent towards the light combining part 1121 to effectively collect the combined light output by the light combining part 1121.

[0048] It can be understood that the light source device 1 further includes a dimming module 14. The dimming module 14 is the control center of the light source device 1 and is used to control the operation of the light source device 1, including data analysis and driving each light emitting element 111 to emit light beams, etc.

[0049] In the embodiment of the present application, as Figures 1 to 4 shown, the dimming module 14 is respectively connected to each light emitting element 111 and the spectral sensing module 13, and is used to drive the light emitting element 111 to emit light according to the spectral data output by the spectral sensing module 13.

[0050] In some examples, the dimming module 14 may include a data processing unit 141 and a driving unit 142. Among them, the data processing unit 141 may include a processor, a memory, etc. The memory stores the expected light quantity ratio at the light output window for each light output mode and the light quantity ratio of the light beams emitted by each light emitting element 111. The processor can calculate the actual light quantity ratio at the light output window according to the received first spectral data and refresh the light quantity ratio of the light beams emitted by each light emitting element 111 in the memory. The driving unit can output a driving current according to the light quantity ratio of the light beams emitted by each light emitting element 111 in the memory to drive each light emitting element 111 to emit light beams.

[0051] The first spectral data refers to the light output spectrum at the light output window 15 of the light source device 1. After receiving the first spectral data, the dimming module 14 can calculate the actual light quantity ratio of the light output spectrum at the light output window 15 according to the first spectral data. Furthermore, according to the difference between the actual light quantity ratio and the expected light quantity ratio of the target light output mode (such as the white light mode or the special light mode), the dimming module 14 can adjust the light quantity ratio of the light beams emitted by each light emitting element 111 so that the light quantity ratio at the light output window 15 remains stable, and accurately and stably output the light output spectrum of the target light output mode.

[0052] Based on Figures 1 to 5 the light source device 1 shown, an embodiment of the present application further provides a dimming method, which may include:

[0053] S101, in response to a first trigger instruction, the dimming module 14 obtains first spectral data from the spectral sensing module 13.

[0054] Among them, the first trigger instruction may be a user instruction. For example, the light source device 1 further includes a human-computer interaction module (such as a touch display screen, operation buttons, etc.), and the user can input the first trigger instruction through the human-computer interaction module. After receiving the first trigger instruction, the dimming module 14 reads the first spectral data from the spectral sensing module 13.

[0055] Optionally, the first trigger instruction may also be a timer instruction. For example, a timer may be set in the dimming module 14 to periodically read the first spectral data from the spectral sensing module 13. The present application does not limit this.

[0056] S102, the dimming module 14 updates the first light quantity ratio between the emission beams of the plurality of light-emitting elements 111 according to the first spectral data and a preset second light quantity ratio, and the second light quantity ratio represents the desired light quantity ratio of the light-emitting spectrum of the light output window 15.

[0057] Next, taking the plurality of light-emitting elements 111 including a red LED, a green LED, a blue LED, and a purple LED, and the target light output mode being the white light mode as an example, the working principle of the light source device 1 will be exemplarily described.

[0058] When the light source device 1 leaves the factory, the first light quantity ratio and the second light quantity ratio are preset in the dimming module 14. The first light quantity ratio is the light quantity ratio of the emission beams of the red LED, the green LED, the blue LED, and the purple LED, and is assumed to be expressed as a r :1:a b :a uv . The second light quantity ratio represents the desired light quantity ratio of the light-emitting spectrum of the light output window 15 in the white light mode, and is assumed to be expressed as b r :1:b b :b uv .

[0059] After the light source device 1 starts the white light mode, the dimming module 14 follows the preset first light quantity ratio a r :1:a b :a uvOutput drive current so that the red LED, green LED, blue LED, and purple LED emit light beams according to the first light quantity ratio. The first detection optical fiber 12 detects stray light at the edge of the light output window 15 and transmits the stray light to the spectral sensing module 13. The spectral sensing module 13 generates first spectral data of the stray light (i.e., the light output spectrum at the light output window 15), assumed to be represented as f 1 (λ).

[0060] In response to the first trigger instruction, after the dimming module 14 obtains f 1 (λ) from the spectral sensing module 13, it calculates the actual light quantity ratio b' of f 1 (λ): 1:b' r :b' b . uv .

[0061] It should be noted that the height of the spectrum of each color light in the light output spectrum is determined by the ratio of the light quantity of the light beams emitted by each light emitting element 111. By cutting the light output spectrum into four bands of red, green, blue, and purple according to the wave trough, and respectively calculating the spectral integral values within the four bands, and normalizing according to the light quantity of the green light, the light quantity ratio of each color light in the light output spectrum can be obtained.

[0062] Exemplarily, as Figure 6 shown, it is a schematic diagram of the light output spectrum at the light output window 15 in the white light mode. Assume that the wavelength band of the red beam emitted by the red LED can be set to 600 - 650 nm, and the central wavelength can be 630 nm; the wavelength band of the green beam emitted by the green LED can be set to 470 - 600 nm, and the central wavelength can be 540 nm; the wavelength band of the blue beam emitted by the blue LED can be set to 430 - 470 nm, and the central wavelength can be 440 nm; the wavelength band of the purple beam emitted by the purple LED can be set to 390 - 430 nm, and the central wavelength can be 403 nm.

[0063] Then the calculation method of the actual light quantity ratio of f 1 (λ) can be as follows:

[0064]

[0065]

[0066]

[0067] It should be noted that since the intensity of green light has a greater impact on the image brightness, green light is used as the reference. Of course, other colors of light can also be selected as the reference to calculate the light quantity ratios of multiple colors in the spectrum.

[0068] The dimming module 14 compares b' r :1:b' b : b' uv and b r :1:b b : b uv to determine whether the light quantity of the emission beam of each light-emitting element 11 needs to be adjusted. For example, the second light quantity ratio is 0.95:1.00:0.54:0.32, and the actual light quantity ratio of the measured f 1 (λ) is 0.95:1:0.50:0.29, indicating that the light output of the blue channel and the purple channel is low. The ratios that need to be increased are 0.54 / 0.50 - 1 = 8.0% and 0.32 / 0.29 - 1 = 10.3% respectively. The dimming module 14 increases a b in the first light quantity ratio by 8.0%, and increases a uv by 10.3%, and outputs the corresponding drive current according to the updated first light quantity ratio, so that the red LED, green LED, blue LED, and purple LED emit light beams according to the updated first light quantity ratio, thereby ensuring that the light emission spectrum at the light output window 15 is the spectrum of the correct white light mode.

[0069] Optionally, when using the white light mode next time, the dimming device 4 can drive a plurality of light-emitting elements 111 according to the saved updated first light quantity ratio.

[0070] It should be noted that the light source device 1 provided by the embodiment of the present application collects stray light at the edge of the light output window 15 by arranging the first detection optical fiber 1 inside the light output window 15, so as to monitor the actual light quantity ratio of the light emission spectrum of the light output window 15 in real time, and feedback and adjust the first light quantity ratio of each light-emitting element 111 according to the monitoring result, thereby ensuring that the light quantity ratio of the light emission spectrum of the light output window 15 is stably maintained at the second light quantity ratio corresponding to the target light output mode, so that the light source device 1 can stably and accurately output the combined light of the target light output mode.

[0071] In some scenarios, the deterioration of the mirror body 2 will also cause the imaging effect of the endoscope system to deviate. For example, the light guide component in the mirror body 2 usually consists of thousands of optical fibers. After being irradiated by short waves for a long time, the transmittance of the optical fibers deteriorates, and the transmittance deterioration speeds of different wavelength bands are also inconsistent, so that the deterioration degree of the short wave band is relatively higher. Then, in the case of a preset first light quantity ratio, the light quantity of the short wavelength is missing, resulting in the overall image being reddish. Moreover, different mirror bodies 2 have different usage durations and usage frequencies in the hospital, resulting in different deterioration degrees of different mirror bodies 2, causing the endoscope images collected by different mirror bodies 2 to be inconsistent, affecting the doctor's diagnosis and treatment.

[0072] In order to reduce the impact of the deterioration of the lens body on the imaging effect of the endoscope system, an optional solution is to analyze the endoscope image to adjust the first light quantity ratio in real time. However, the image sensor in the lens body 2 collects the endoscope image based on three channels of R / G / B, that is, the wavelength bands of blue light and purple light both fall within the blue channel and cannot be separated. Therefore, the light quantity ratio of blue light and purple light cannot be accurately adjusted. Moreover, the stability of blue light and purple light affects the imaging effect of shallow tissues on the endoscope image.

[0073] Another optional solution is to record the usage duration and the number of insertions and removals of the lens body 2 to obtain an empirical curve of the transmittance decay of the lens body 2. Adjust the light output of each light-emitting element 111 in the light source device 1 according to the empirical curve. However, this solution depends on the manufacturer's accurate control of the actual decay condition of the lens body 2, and the usage conditions of the lens body 2 in different hospitals are also different. Therefore, it is difficult to accurately adjust the light output of each light-emitting element 111 based on the empirical curve of the transmittance decay of the lens body 2.

[0074] There are also some solutions that use special equipment to detect the emission spectrum of the insertion portion 22 of the lens body 2 and adjust the light output of each light-emitting element 111 according to the detection result. This method is complex in operation and consumes manpower and material resources.

[0075] Therefore, in another embodiment of the present application, referring to Figures 7 to 9 , the light source device 1 may include a second detection optical fiber 16 and a detection window 17. The probe 161 of the second detection optical fiber 16 is disposed inside the detection window 17, and the other end is connected to the spectral sensing module 13.

[0076] The detection window 17 is opened on the housing 18. The detection window 17 is used to detachably connect the insertion portion 22 of the lens body 2. When it is necessary to detect the emission spectrum of the insertion portion 22 of the lens body 2, as Figure 7 shown, the insertion portion 22 of the lens body 2 can be directly connected to the detection window 17 so that the second detection optical fiber 16 collects the emitted light of the insertion portion 22. In one example, the detection window 17 may be a cylindrical structure, and the insertion portion 22 of the lens body 2 can be inserted and abutted and fixed inside the cylindrical structure. A fixing structure 19 may be provided inside the detection window 17 to fix the probe 161 of the second detection optical fiber 16 at the detection window 17.

[0077] The second detection optical fiber 16 transmits the collected emitted light to the spectral sensing module 13. At this time, the spectral sensing module 13 receives the stray light transmitted by the first detection optical fiber 12 and the emitted light transmitted by the second detection optical fiber 16, and obtains second spectral data by detecting the superimposed light of the stray light and the emitted light.

[0078] It can be understood that the second spectral data is the superimposed spectrum of the outgoing light spectrum of the light-emitting window 15 and the outgoing light spectrum of the mirror body 2. Then, by subtracting the first spectral data from the second spectral data, the superimposed spectrum of the outgoing light spectrum of the mirror body 2 (which can be referred to as the third spectral data in the embodiments of the present application) can be obtained.

[0079] It is worth noting that for the light source device 1 provided in the embodiments of the present application, by adding the second detection optical fiber 16 and the detection window 17, the user only needs to connect the insertion portion 22 of the mirror body 2 to the detection window 17 to detect the actual spectrum of the outgoing light of the mirror body 2, without the need for other auxiliary tools or professional maintenance personnel to operate, which greatly improves the detection efficiency and saves manpower and material resources.

[0080] Based on Figures 7 to 9 the light source device 1 shown, another dimming method is provided in an embodiment of the present application, which may include:

[0081] S201, in response to the first trigger instruction, the dimming module 14 obtains the first spectral data from the spectral sensing module 13.

[0082] S202, when the dimming module 14 obtains the second spectral data from the spectral sensing module 13, the dimming module 14 subtracts the first spectral data from the second spectral data to obtain the third spectral data, and the third spectral data is the outgoing light spectrum of the insertion portion 22.

[0083] In one example, the dimming module 14 may obtain the second spectral data from the spectral sensing module 13 when detecting the second trigger instruction.

[0084] Among them, both the first trigger instruction and the second trigger instruction may be user instructions. For example, the light source device 1 further includes a human-computer interaction module (such as a touch display screen, operation buttons, etc.), and the user can input the trigger instruction through the human-computer interaction module.

[0085] In one scenario, when the user needs the light source device 1 to adaptively adjust the light quantity ratio of the light-emitting elements 111, the user can first input the first trigger instruction, so that the spectral sensing module 13 receives the stray light detected by the first detection optical fiber 12 and detects and obtains the first spectral data. The dimming module 14 first obtains the first spectral data from the spectral sensing module 13.

[0086] After that, the user plugs the insertion portion 22 of the mirror body 2 into the detection window 17, so that the second detection optical fiber 16 detects the outgoing light of the insertion portion 22 of the mirror body 2 at the detection window 17 and transmits the outgoing light to the spectral sensing module 13. At this time, the light received by the spectral sensing module 13 is the superimposed light of the outgoing light of the insertion portion 22 and the stray light of the light-emitting window, so as to detect and obtain the second spectral data.

[0087] The user inputs a second trigger instruction to trigger the dimming module 14 to obtain second spectral data from the spectral sensing module 13.

[0088] After the dimming module 14 obtains the first spectral data and the second spectral data based on the first trigger instruction and the second trigger instruction, the third spectral data can be calculated.

[0089] Optionally, the first trigger instruction can be a periodic instruction, and the second trigger instruction is a user instruction. For example, a timer can be set in the dimming module 14 to periodically read the first spectral data from the spectral sensing module 13. When the user needs the light source device 1 to adaptively adjust the light quantity ratio of the plurality of light emitting elements 111, the user plugs the insertion portion 22 of the lens body 2 into the detection window 17, so that the second detection optical fiber 16 detects the outgoing light of the insertion portion 22 of the lens body 2 at the detection window 17 and transmits the outgoing light to the spectral sensing module 13. At this time, the spectral sensing module 13 detects the superimposed light of the outgoing light of the insertion portion 22 and the stray light of the light output window to obtain the second spectral data. Then the user inputs a second trigger instruction to trigger the dimming module 14 to obtain the second spectral data from the spectral sensing module 13.

[0090] As another alternative embodiment of the present application, the second trigger instruction can also be automatically generated by the light source device 1. For example, the light that the second detection optical fiber 16 can detect may be the light that enters after the ambient light passes through the detection window 17, or the light that enters after the lens body 2 is inserted. Considering the actual application, the light intensity output by the lens body (the light intensity can be quantified in terms of luminous flux or light brightness, etc.) is relatively strong, and generally much higher than the light intensity of the ambient light passing through the detection window 17. The reasons are as follows: 1. The light intensity output by the lens body itself is generally stronger than the ambient light. 2. The detection window 17 can block most or even all of the ambient light, so the light that can enter the second detection optical fiber 16 through the detection window 17 is extremely limited, that is, the light intensity is extremely weak. Therefore, based on this actual situation, the light source device 1 can automatically generate a second trigger instruction on the basis that the spectral sensing module 13 detects the stray light and at the same time the spectral sensing module 13 detects a sudden change in light intensity.

[0091] Among them, in some embodiments, the sudden change of light intensity can be interpreted as: the absolute value of the increase of light intensity detected by the spectral sensor module 13 per unit time is greater than the preset intensity threshold, thereby realizing the quantification of the sudden change. In other embodiments, considering that the light intensity of the light source device 1 itself has multiple gears, that is, the output light intensity itself has strong and weak points, and the light emitted by the mirror body 2 is essentially the light output by the light source device 1 after being attenuated by the mirror body 2, that is, the light intensity emitted by the mirror body 2 is positively correlated with the light intensity emitted by the light source device 1 (in practical applications, it can be simplified to a positive proportional relationship). Therefore, when quantifying the sudden change, it can be compared from the perspective of enhancing the ratio. Based on this principle, in the embodiment of the present application, the sudden change of light intensity can be interpreted as: the proportional value of the increase of light intensity detected by the spectral sensor module 13 per unit time is greater than the preset proportional threshold, thereby realizing the quantification of the sudden change. For example, in some embodiments, considering that the attenuation rate may reach 50% when the mirror body is severely deteriorated, the ratio threshold may be set to 50%, that is, when the light intensity detected by the spectrum sensor module 13 increases by 50% or more per unit time, it can be determined that a sudden change in light intensity has occurred, and the light source device 1 automatically generates a second trigger instruction. Of course, the ratio threshold may also be set to other values ​​according to actual conditions, for example, any value between 30% and 90%.

[0092] After detecting the second trigger instruction, the dimming module 14 obtains the second spectrum data from the spectrum sensing module 13, and calculates the third spectrum data according to the latest first spectrum data and the second spectrum data obtained before detecting the second trigger instruction.

[0093] In another scenario, the first trigger instruction may be a periodic instruction, and a timer may be set in the dimming module 14 to periodically read spectral data from the spectral sensing module 13 and identify whether the currently read spectral data is the second spectral data.

[0094] It can be understood that, since the second spectrum data is the spectrum of the superimposed light of the outgoing light of the insertion part 22 and the stray light of the light exit window, when the insertion part 22 of the user mirror body 2 is plugged into the detection window 17, the value of the spectrum data obtained by the dimming module 14 from the spectrum sensing module 13 will increase significantly. Therefore, the dimming module 14 can determine whether the currently acquired spectrum data is the second spectrum data by judging the size relationship between the currently acquired spectrum data and the spectrum data acquired in the previous cycle.

[0095] In this scenario, the dimming module 14 periodically obtains spectral data from the spectral sensing module 13. When it is recognized that the currently obtained spectral data is the second spectral data, the dimming module 14 calculates the third spectral data based on the first spectral data obtained in the previous cycle and the second spectral data obtained in the current cycle.

[0096] S203. The dimming module 14 updates the first light quantity ratio according to the third spectral data and the preset third light quantity ratio. The third light quantity ratio represents the desired light quantity ratio of the light emission spectrum of the insertion part 22.

[0097] Exemplarily, based on the above example, still taking the plurality of light emitting elements 111 including red LEDs, green LEDs, blue LEDs, and purple LEDs, and the target light emission mode being the white light mode as an example, the working principle of the light source device 1 for monitoring and adjusting the light emission state of the mirror body 2 is exemplarily described.

[0098] When the light source device 1 leaves the factory, the third light quantity ratio is also preset in the dimming module 14. The third light quantity ratio represents the desired light quantity ratio of the light emission spectrum of the insertion part 22 of the mirror body 2 in the white light mode. Assume c r :1:c b :c uv .

[0099] After the light source device 1 starts the white light mode, the dimming device 14 outputs a drive current according to the currently saved first light quantity ratio a r :1:a b :a uv so that the red LEDs, green LEDs, blue LEDs, and purple LEDs emit light beams according to the first light quantity ratio. The first detection optical fiber 12 detects stray light at the edge of the light output window 15 and transmits the stray light to the spectral sensing module 13 to generate the first spectral data f 1 (λ).

[0100] The insertion part 22 of the mirror body 2 is inserted into the detection window 17. The second detection optical fiber 16 detects the outgoing light of the insertion part 22 of the mirror body 2 at the detection window 17 and transmits the outgoing light to the spectral sensing module 13. The spectral sensing module 13 generates the second spectral data f 2 (λ) of the outgoing light. The second spectral data f 2 (λ) is the superimposed spectrum of the light emission spectrum of the mirror body 2 and the light emission spectrum of the light source device 1. Therefore, the dimming device 4 can calculate the difference between f 2 (λ) and f 2 (λ) to obtain the light emission spectrum f 3 (λ) of the mirror body 2, that is, f 3 (λ) = f 2 (λ) - f 1 (λ).

[0101] The dimming device 4 calculates the actual light quantity ratio c' of the light emission spectrum f 3 (λ) of the mirror body 2 according to the following formula r : 1: c' b : c' uv .

[0102]

[0103]

[0104]

[0105] The dimming module 4 makes c r ’: 1: c b ’: c uv ’ be compared with the third light quantity ratio c r : 1: c b : c uv to determine whether the light quantity of the emitted light of each light emitting element 11 needs to be adjusted. For example, the preset third light quantity ratio is 0.92: 1.00: 0.45: 0.22, and the actual light quantity ratio of f 3 (λ) is 0.92: 1: 0.41: 0.20, indicating that the light output quantities of the blue light and the purple light are relatively low, and the ratios that need to be increased are 0.45 / 0.41 - 1 = 9.8% and 0.22 / 0.20 - 1 = 10.0% respectively. The dimming device 14 increases a b in the first light quantity ratio by 9.8%, and a uv by 10.0%, and outputs a drive current according to the updated first light quantity ratio, so that the red LED, the green LED, the blue LED and the purple LED emit light beams according to the updated first light quantity ratio, thereby ensuring that the spectrum of the emitted light of the mirror body 2 is the accurate spectrum in the white light mode.

[0106] It should be noted that for the light source device 1 provided in the embodiment of the present application, by adding the second detection optical fiber 16 and the detection window 17, the user only needs to connect the insertion part 22 of the mirror body 2 to the detection window 17 to monitor the light emission spectrum of the emitted light of the mirror body 2, and feedback and adjust the first light quantity ratio of each light emitting element 111 according to the monitoring result. Thus, it is ensured that the light quantity ratio of the emitted light of the mirror body 2 is stably maintained at the third light quantity ratio corresponding to the target light emission mode, so that the mirror body 2 can stably and accurately output the emitted light of the target light emission mode. Moreover, no other auxiliary tools are required, nor is the operation of professional maintenance personnel required, which greatly improves the monitoring efficiency and saves manpower and material resources.

[0107] In addition, when the dimming module 14 compares c r ’: 1: c b ’: c uv ’ with the third light quantity ratio cr : 1: c b : c uv During the process, the light attenuation degree of the mirror body 2 for each color optical path can be reflected according to the comparison result. For example, the light attenuation law of the mirror body 2 for each color optical path is that short wavelengths attenuate quickly and long wavelengths attenuate slowly, that is, (c r ’ / c r -1) ≤ (c g ’ / c g -1) < (c b ’ / c b -1) < (cuv’ / c uv -1). In actual use, the attenuation degrees of the red and green optical paths are relatively low, but due to the inherent characteristics of the optical fiber, the attenuation of the blue and purple optical paths is relatively serious, which will significantly affect the imaging effect of the surface mucosa and microstructures in the endoscope image, and it cannot be solved by the method of overall increasing the illumination brightness.

[0108] However, the light source device 1 provided by the present application can accurately monitor the attenuation conditions of each color optical path by analyzing the light quantity ratio of the emitted light and perform feedback adjustment, so that the light quantities of the blue light and purple light are kept stable to ensure the imaging effect of the shallow tissues on the endoscope image.

[0109] It can be understood that the light source device 1 provided by the present application can simultaneously monitor the light output state of the light source and the light output state of the mirror body, and eliminate the adverse effects inside the light source and the mirror body at the same time, ensuring the accuracy of the endoscope image.

[0110] In one example, the dimming module 14 may further include a communication unit for wireless communication with an external device. For example, the dimming module 14 may also determine the first light output state information of the light source device 1 according to the first spectral data. For example, for which color optical path in the emitted light of the light output window 15 the light output quantity abnormally decreases or increases. The dimming module 14 may send the analyzed first light output state information to the external device, and the external device is a client device or a server.

[0111] Optionally, the dimming module 14 may also determine the second light output state information of the mirror body 2 according to the second spectral data. For example, for which color optical path in the emitted light of the mirror body 2 the light output quantity abnormally decreases or increases. The dimming module 14 may send the analyzed second light output state information to the external device.

[0112] In the embodiment of the present application, the external device may be a client device or a server. For example, the dimming module 14 automatically uploads the first light output state information and the second light output state information to the server, so that the manufacturer can conveniently obtain the usage conditions of a large number of clients, and improve the designs of the light source device 1 and the mirror body 2 by statistically analyzing the large number of light output state information.

[0113] In one example, the light source device 1 may further include a display module, and the dimming module 14 is connected to the display module. For example, the display module may be fixed outside the housing 18. The dimming module 14 may send the first light output state information, the second light output state information, and the change of the first light quantity ratio to the display module for display, so that the user can understand the usage conditions of the light source device 1 and the lens body 2 connected to the light source device 1.

[0114] It should be noted that the light source device 1 provided in the present application can be externally connected to different types of lens bodies 2 to achieve detection of different human organs. For example, the lens body 2 can be a flexible endoscope or a rigid endoscope. Exemplarily, the lens body 2 can be a gastroscope, colonoscope, laryngoscope, fiberoptic bronchoscope, laparoscope, thoracoscope, ureteroscope, cystoscope, arthroscope, hysteroscope, etc., and the present application does not limit this.

[0115] The embodiment of the present application also provides an endoscope system, including an image processing device, a display, and the light source device 1 and the lens body 2 described in any of the above embodiments. It should be noted that, in some embodiments, the light source device 1 and the image processing device can be an integrated machine that combines the two, that is, the two are the same device. At this time, the endoscope system can be described as including: a display, and the light source device 1 and the lens body 2 described in any of the above embodiments. Among them, the display can be used to display the real-time video captured by the endoscope system.

[0116] It should be noted that, in the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise specifically defined.

[0117] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0118] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0119] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0120] The reference to "one embodiment" or "some embodiments" etc. described in the specification of this application means that a specific feature, structure or characteristic described in connection with that embodiment is included in one or more embodiments of this application. Thus, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all of the embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A light source device (1), characterized in that: It comprises a light combining module (11), a first detection optical fiber (12), a spectrum sensing module (13) and a light exit window (15); The light combining module (11) comprises a plurality of light emitting elements (111) and a light combining assembly (112); the light beams emitted by the plurality of light emitting elements (111) are combined by the light combining assembly (112) to form a combined light; the combined light is emitted from the light exit window (15); the light exit window (15) is used for detachably connecting to a connecting portion (21) of a mirror body (2); The probe (121) of the first detection optical fiber (12) is arranged on the inner side of the light exit window (15), and the other end is connected to the spectrum sensing module (13); the first detection optical fiber (12) is used to collect stray light at the edge of the light exit window (15) and transmit the stray light to the spectrum sensing module (13); The spectrum sensing module (13) is used to detect the stray light to obtain first spectrum data.

2. The light source device (1) according to claim 1, characterized in that: The light combining assembly (112) comprises a light combining component (1121) and a light emitting lens barrel (1122); one end of the light emitting lens barrel (1122) is connected to the inner wall of the light emitting window (15); and the probe (121) of the first detection optical fiber (12) is connected to the light emitting lens barrel (1122).

3. The light source device (1) according to claim 2, characterized in that: The light emitting lens barrel (1122) is provided with a mounting groove, and the probe (121) of the first detection optical fiber (12) is fixed in the mounting groove.

4. The light source device (1) according to claim 2, characterized in that: The probe (121) of the first detection optical fiber (12) is in a bent shape and faces the light combining component (1121).

5. The light source device (1) according to claim 1, characterized in that: The light source device (1) further comprises a second detection optical fiber (16) and a detection window (17); The probe (161) of the second detection optical fiber (16) is arranged inside the detection window (17), and the other end is connected to the spectrum sensing module (13); The detection window (17) is used to detachably connect to the insertion portion (22) of the mirror body (2); The second detection optical fiber (16) is used to collect the output light of the insertion part (22), and transmit the collected output light to the spectrum sensing module (13); The spectrum sensing module (13) is also used to detect the superimposed light of the stray light and the emitted light to obtain second spectrum data.

6. The light source device (1) according to claim 5, characterized in that: The detection window (17) is a cylindrical structure, and the insertion portion (22) of the mirror body (2) can be inserted into and abutted and fixed in the cylindrical structure.

7. The light source device (1) according to any one of claims 1 to 6, characterized in that: The light source device further comprises a dimming module (14), wherein the dimming module (14) is respectively connected to the spectrum sensing module (13) and the plurality of light-emitting elements (111); The dimming module (14) is used to drive the light-emitting element (111) to emit light according to the spectrum data output by the spectrum sensing module (13).

8. The light source device (1) according to claim 7, characterized in that: The light source device also includes a display module (18), and the dimming module (14) is connected to the display module (18).

9. The light source device (1) according to any one of claims 1 to 6, characterized in that: The spectrum sensing module (13) comprises a concave mirror diffraction grating and a high-precision image sensor.

10. An endoscope system, characterized in that: It comprises an image processing device, a display, a light source device (1) as claimed in any one of claims 1 to 9, and a mirror body (2).

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