Light source device, endoscope system, and dimming method

Abstract

The invention is suitable for the technical field of medical equipment, and provides a light source device, an endoscope system and a dimming method. 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] The present application belongs to the field of medical equipment technology, and in particular relates to a light source device, an endoscope system and a dimming method. Background Art

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

[0003] At present, more and more light sources use light-emitting elements of multiple different colors to provide specific modes of lighting. In order to obtain a stable lighting effect, it is necessary to ensure that the light quantity ratio of each color in the output light of the light source is stable at the preset ratio of the corresponding mode. Therefore, multiple light quantity sensors are generally used to monitor the light quantity emitted by each light-emitting element, and feedback adjustment is performed to achieve a constant light emission 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 shifts in position, the light output spectrum of the light source will also change. Therefore, professional operators are often required to use special equipment to detect the light output spectrum of the light source, which is complicated to operate and consumes manpower and material resources. Summary of the invention

[0004] The present application provides a light source device, an endoscope system and a dimming method, which can solve the problem that the detection operation of the light output spectrum of the light source in the existing endoscope system is complicated and consumes manpower and material resources.

[0005] In a first aspect, an embodiment of the present application provides a light source device, including a light combining module, a first detection optical fiber, a spectrum sensing module and a light exit window;

[0006] The light combining module comprises a plurality of light emitting elements and a light combining assembly, wherein the light beams emitted by the plurality of light emitting elements are combined by the light combining assembly to form a combined light, and the combined light is emitted from the light exit window, and the light exit window is used for a connection part of a detachable connection mirror body;

[0007] The probe of the first detection optical fiber is arranged on the inner side of the light exit window, and the other end is connected to the spectrum sensing module. The first detection optical fiber is used to collect stray light at the edge of the light exit window and transmit the stray light to the spectrum 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 the present application can effectively collect stray light at the edge of the light exit window without affecting the main lighting light path by setting a first detection optical fiber at the edge of the light exit window, and at the same time, the first detection optical fiber transmits the collected stray light to the spectrum sensing module for spectrum detection to obtain the first spectrum data (i.e., the light exit spectrum of the light exit window, i.e., the light exit spectrum of the light source device), so as to facilitate the subsequent adjustment of the light quantity ratio of the emission light beam of each light emitting element according to the feedback of the spectrum detection result. There is no need to set light quantity sensors in each light emitting element, which greatly simplifies the structure of the light source device, and there is no need to use special equipment to detect the light exit spectrum, which realizes the autonomous collection of the light exit spectrum by the light source device, without other auxiliary tools or professional maintenance personnel, which greatly improves the detection efficiency and saves manpower and material resources.

[0010] In a possible implementation, the light combining assembly includes a light combining component and a light emitting lens barrel, one end of the light emitting lens barrel is connected to the inner wall of the light emitting window, and the probe of the first detection optical fiber is connected to the light emitting lens barrel.

[0011] In a possible implementation, a mounting groove is provided on the light emitting lens barrel, and the probe of the first detection optical fiber is fixed in the mounting groove and faces the light combining component.

[0012] In a possible implementation, the light source device further includes a second detection optical fiber and a detection window;

[0013] The probe of the second detection optical fiber is arranged inside the detection window, and the other end is connected to the spectrum sensing module;

[0014] The detection window is used for detachably connecting the insertion portion of the scope body;

[0015] The second detection optical fiber is used to collect the output light of the insertion part and transmit the collected output light to the spectrum sensing module;

[0016] The spectrum sensing module is also used to detect the superimposed light of the stray light and the emitted light to obtain second spectrum data.

[0017] The light source device provided in the embodiment of the present application, by adding a second detection optical fiber and a detection window, the user only needs to connect the insertion part of the mirror body to the detection window to detect the actual spectrum of the output light of the mirror body. No other auxiliary tools are required, and no professional maintenance personnel are required to operate, which greatly improves the detection efficiency and saves manpower and material resources.

[0018] In a possible implementation, the detection window is a cylindrical structure, and the insertion portion of the mirror body can be inserted into and abutted and fixed in the cylindrical structure.

[0019] In a possible implementation, the light source device further includes a dimming module, and the dimming module is respectively connected to the spectrum sensing module and the plurality of light emitting elements 1;

[0020] The dimming module is used to drive the light emitting element 1 to emit light according to the spectrum data output by the spectrum sensing module.

[0021] In a possible implementation manner, the light source device further includes a display module, and the dimming module is connected to the display module.

[0022] In a second aspect, an embodiment of the present application provides an endoscope system, comprising an image processing device, a display, a light source device as described in the first aspect, and a scope body.

[0023] In a third aspect, an embodiment of the present application provides a dimming method, which is applied to the light source device described in the first aspect, and the method includes:

[0024] In response to a first trigger instruction, the dimming module acquires the first spectrum data from the spectrum sensing module;

[0025] The dimming module updates a first light quantity ratio between the emission light beams of the plurality of light emitting elements according to the first spectrum data and a preset second light quantity ratio, wherein the second light quantity ratio represents a desired light quantity ratio of the light emission spectrum of the light emission window.

[0026] In a possible implementation, when the light source device further includes a second detection optical fiber and a detection window, after the dimming module acquires the first spectrum data from the spectrum sensing module, the method further includes:

[0027] In response to a second trigger instruction, the dimming module acquires the second spectrum data from the spectrum sensing module;

[0028] The dimming module obtains third spectrum data based on the difference between the first spectrum data and the second spectrum data, and the third spectrum data is the light output spectrum data of the insertion part;

[0029] The dimming module updates the first light quantity ratio according to the third spectrum data and a preset third light quantity ratio, where the third light quantity ratio represents a desired light quantity ratio of the light output spectrum of the insertion portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 A schematic diagram of the structure of an endoscope system is provided for an embodiment of the present application;

[0032] Figure 2 A schematic diagram of a partial structure of a light source device 1 provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the overall structure of a light source device 1 provided in an embodiment of the present application;

[0034] Figure 4 An overall cross-sectional view of a light source device 1 provided in an embodiment of the present application;

[0035] Figure 5 A partially enlarged cross-sectional view of a light source device 1 provided in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of a light emission spectrum provided in an embodiment of the present application;

[0037] Figure 7 Another schematic diagram of the structure of an endoscope system is provided for an embodiment of the present application;

[0038] Figure 8 A schematic diagram of a partial structure of another light source device 1 provided in an embodiment of the present application;

[0039] Fig. 9 The overall structure of another light source device 1 provided in an embodiment of the present application is schematically shown. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail 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 used to limit the present application.

[0041] See also Figures 1 to 5 , is a schematic diagram of the structure of a light source device 1 provided in an embodiment of the present application. The light source device 1 comprises a light combining module 11, a first detection optical fiber 12, a spectrum sensing module 13 and a light exit window 15.

[0042] The light combining module 11 includes a plurality of light emitting elements 111 and a light combining assembly 112 . The emitted light beams of the plurality of light emitting elements 111 are combined by the light combining assembly 112 to form a combined light, and the combined light is emitted from the light exit window 15 .

[0043] The plurality of light emitting elements 111 may be light emitting devices that emit light beams of different colors, such as laser diodes (LD) or light emitting diodes (LED).

[0044] In one example, the plurality of light emitting elements 111 may include a red LED, a green LED, a blue LED, and a violet LED.

[0045] The light exit window 15 is used to detachably connect the connecting portion 21 of the mirror body 2, so that the synthetic light emitted from the light exit window 15 is emitted into the mirror body 2 through the connecting portion 21, passes through the light guide component in the mirror body 2, and is emitted from the insertion portion 22 of the mirror body 2 to illuminate the body cavity into which the insertion portion 22 is inserted.

[0046] 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 spectral 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 spectral sensing module 13; the spectral sensing module 13 is used to detect stray light to obtain first spectral data.

[0047] In one example, the spectrum transmission module 13 may include at least a concave mirror diffraction grating and a high-precision image sensor. When stray light enters the spectrum sensing module 13, the concave mirror diffraction grating reflects light of 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 brightness values ​​of different wavelengths and obtain first spectrum data. Optionally, the spectrum sensing module 13 may also use other types of imaging optical elements and optical elements for incident light beam splitting, which is not limited by the present application.

[0048] In the embodiment of the present application, by setting the first detection optical fiber 12 at the edge of the light exit window 15, the stray light at the edge of the light exit window 15 can be effectively collected without affecting the main lighting 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 exit spectrum of the light exit window 15, that is, the light exit spectrum of the light source device 1. The light source device 1 provided in the embodiment of the present application can autonomously collect the stray light detection at the edge of the light exit window 15 to obtain the light exit spectrum of the light source device 1, without the use of special equipment, and without the need for professional maintenance personnel to operate, which greatly improves the detection efficiency and saves manpower and material resources. In addition, there is no need to respectively set light quantity sensors in each light-emitting element 111 in the light source device 1, which greatly simplifies the structure of the light source device 1.

[0049] It is understandable that if Figure 1 As shown, the light source device 1 also includes a shell 18, and the light combining module 11, the first detection optical fiber 12, and the spectral sensing module 13 are all encapsulated inside the shell 18. The light exit window 15 is opened on the shell 18. The so-called inner side of the light exit window 15 refers to the side facing the inside of the shell 18. Correspondingly, the mirror body 2 is connected to the outside of the shell 18 through the light exit window 15.

[0050] In an embodiment of the present application, the probe 121 of the first detection optical fiber 12 can be fixed at the edge of the light exit window 15. For example, a fixing groove is opened on the inner wall of the shell 18, and the fixing groove is connected to the side wall of the light exit 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 exit window 15, so as to collect stray light at the edge of the light exit window 15 without affecting the main illumination light path of the light exit window 15.

[0051] Optional, such as Figures 2 to 5 As shown, the light combining assembly 112 includes a light combining component 1121 and a light emitting lens barrel 1122, the light emitting lens barrel 1122 is arranged on the inner side 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. In one example, a mounting groove may also be provided on the light emitting lens barrel 113, and the probe 121 of the first detection optical fiber 12 may be fixed in the mounting groove, so that the probe 121 of the first detection optical fiber 12 is fixed to the edge of the light emitting lens barrel 113, and the stray light at the edge of the light emitting window 15 is collected without affecting the main illumination light path of the light emitting lens barrel 113.

[0052] In one example, if Figure 5 As shown, the probe 121 of the first detection optical fiber 12 can be set to a bent shape, and the probe 121 is bent toward the light combining component 1121 to effectively collect the combined light output by the light combining component 1121.

[0053] It is understandable that the light source device 1 further includes a dimming module 14 , which 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 a light beam.

[0054] In the embodiments of the present application, Figures 1 to 4 As shown, the dimming module 14 is connected to each light-emitting element 111 and the spectrum sensing module 13 respectively, and is used to drive the light-emitting element 111 to emit light according to the spectrum data output by the spectrum sensing module 13.

[0055] In some examples, the dimming module 14 may include a data processing unit 141 and a driving unit 142. The data processing unit 141 may include a processor, a memory, etc. The memory stores the expected light quantity ratio of each light emitting mode at the light emitting window and the light quantity ratio of the emitted light beam of each light emitting element 111. The processor may calculate the actual light quantity ratio at the light emitting window according to the received first spectrum data, and refresh the light quantity ratio of the emitted light beam of each light emitting element 111 in the memory. The driving unit may output a driving current according to the light quantity ratio of the emitted light beam of each light emitting element 111 in the memory, and drive each light emitting element 111 to emit a light beam.

[0056] 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, and then adjust the light quantity ratio of the emitted light beams of each light emitting element 111 according to the difference between the actual light quantity ratio and the expected light quantity ratio of the target light output mode (such as a white light mode or a special light mode), so as to keep the light quantity ratio at the light window 15 stable, so as to accurately and stably output the light output spectrum of the target light output mode.

[0057] based on Figures 1 to 5 The light source device 1 shown in the figure, an embodiment of the present application further provides a dimming method, which may include:

[0058] S101 , in response to a first trigger instruction, the dimming module 14 acquires first spectrum data from the spectrum sensing module 13 .

[0059] The first trigger instruction may be a user instruction. For example, the light source device 1 further includes a human-computer interaction module (for example, a touch screen, an operation button, etc.). The user may input the first trigger instruction through the human-computer interaction module. After receiving the first trigger instruction, the dimming module 14 reads the first spectrum data from the spectrum sensing module 13.

[0060] 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 spectrum data from the spectrum sensing module 13. This application does not impose any limitation on this.

[0061] S102 , the dimming module 14 updates a first light quantity ratio between the emission light beams of the plurality of light emitting elements 111 according to the first spectrum data and a preset second light quantity ratio, where the second light quantity ratio represents a desired light quantity ratio of the light emission spectrum of the light emission window 15 .

[0062] The following is an example in which the plurality of light emitting elements 111 include a red LED, a green LED, a blue LED and a purple LED, and the target light emission mode is a white light mode, to exemplarily illustrate the working principle of the light source device 1 .

[0063] When the light source device 1 leaves the factory, the dimming module 14 is pre-set with a first light quantity ratio and a second light quantity ratio. The first light quantity ratio is the light quantity ratio of the emitted light beams of the red LED, the green LED, the blue LED, and the purple LED, and is assumed to be represented by a r :1:a b :a uv The second light intensity ratio represents the expected light intensity ratio of the light emission spectrum of the light emission window 15 in the white light mode, and is assumed to be expressed as b r :1:b b :b uv .

[0064] After the light source device 1 starts the white light mode, the dimming module 14 adjusts the light intensity according to the preset first light intensity ratio a. r :1:a b :a uv The driving current is outputted, so that the red LED, the green LED, the blue LED and the purple LED emit light beams according to the first light quantity ratio. The first detection optical fiber 12 detects the stray light at the edge of the light exit window 15, and transmits the stray light to the spectrum sensing module 13, and the spectrum sensing module 13 generates the first spectrum data of the stray light (i.e., the light exit spectrum at the light exit window 15), which is assumed to be expressed as f1(λ).

[0065] In response to the first trigger instruction, the dimming module 14 obtains f1(λ) from the spectrum sensing module 13 and calculates the actual light quantity ratio b' of f1(λ). r :1:b' b :b' uv .

[0066] It should be noted that the degree of the spectrum of each color light in the light emission spectrum is determined by the ratio of the light amount of the light beam emitted by each light emitting element 111. By dividing the light emission spectrum into four bands of red, green, blue, and purple according to the trough, and calculating the spectrum integral values ​​in the four bands respectively, and normalizing them according to the light amount of green light, the light amount ratio of each color light in the light emission spectrum can be obtained.

[0067] For example, Figure 6 , which is a schematic diagram of the light spectrum at the light exit window 15 in the white light mode. Assume that the wavelength band of the red light beam emitted by the red LED can be set to 600-650nm, and the central wavelength can be 630nm; the wavelength band of the green light beam emitted by the green LED can be set to 470-600nm, and the central wavelength can be 540nm; the wavelength band of the blue light beam emitted by the blue LED can be set to 430-470nm, and the central wavelength can be 440nm; the wavelength band of the purple light beam emitted by the purple LED can be set to 390-430nm, and the central wavelength can be 403nm.

[0068] Then the actual light quantity ratio of f1(λ) can be calculated as follows:

[0069]

[0070] 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 ratio of multiple colors in the spectrum.

[0071] The dimming module 14 will b' r :1:b' b :b' uv and b r :1:b b :b uv Compare and determine whether the light quantity of the light beam emitted by 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 f1(λ) measured is 0.95:1:0.50:0.29, indicating that the light output of the blue channel and the purple channel is low, and the proportions that need to be adjusted are 0.54 / 0.50-1=8.0% and 0.32 / 0.29-1=10.3%, respectively. The dimming module 14 adjusts the a in the first light quantity ratio b Increased by 8.0%, a uv It is increased by 10.3%, and the corresponding driving current is output according to the updated first light intensity ratio, so that the red LED, green LED, blue LED and purple LED emit light beams according to the updated first light intensity ratio, thereby ensuring that the light output spectrum at the light output window 15 is the correct spectrum of the white light mode.

[0072] Optionally, when the white light mode is used next time, the dimming device 4 may drive the plurality of light emitting elements 111 according to the saved updated first light quantity ratio.

[0073] It is worth noting that the light source device 1 provided in the embodiment of the present application collects stray light at the edge of the light exit window 15 by arranging a first detection optical fiber 1 on the inner side of the light exit window 15, so as to monitor the actual light intensity ratio of the light output spectrum of the light exit window 15 in real time, and adjust the first light intensity ratio of each light emitting element 111 according to the feedback of the monitoring result, so as to ensure that the light intensity ratio of the light output spectrum of the light exit window 15 is stably maintained at the second light intensity ratio corresponding to the target light output mode, so that the light source device 1 can stably and accurately output the synthetic light of the target light output mode.

[0074] In some scenarios, the degradation of the scope 2 will also cause deviations in the imaging effect of the endoscope system. For example, the light guide assembly in the scope 2 is usually composed of thousands of optical fibers. The transmittance of the optical fiber will degrade after being exposed to short-wave radiation for a long time, and the transmittance degradation rate of different bands is also inconsistent, making the degradation degree of the short-wave band relatively higher. Then, under the preset first light quantity ratio, the short-wavelength light quantity is missing, causing the overall image to be reddish. In addition, different scopes 2 are used for different lengths of time and frequencies in the hospital, resulting in different degrees of degradation of different scopes 2, resulting in inconsistent endoscopic images collected by different scopes 2, affecting the doctor's diagnosis and treatment.

[0075] In order to reduce the impact of the degradation of the scope on the imaging effect of the endoscope system, an optional solution is to analyze the endoscopic image to adjust the first light intensity ratio in real time. However, the image sensor in the scope 2 collects the endoscopic image based on three channels of R / G / B, that is, the wavelengths of blue light and purple light both fall within the blue channel and cannot be separated, so the light intensity ratio of blue light and purple light cannot be accurately adjusted. The stability of blue light and purple light affects the imaging effect of shallow tissues on the endoscopic image.

[0076] Another optional solution is to record the usage time and plug-in times of the scope 2 to obtain an experience curve of the transmittance decay of the scope 2. The light output of each light-emitting element 111 in the light source device 1 is adjusted according to the experience curve. However, this solution relies on the manufacturer's accurate control of the actual decay condition of the scope 2, and different hospitals have different usage conditions of the scope 2. Therefore, it is difficult to accurately adjust the light output of each light-emitting element 111 based on the experience curve of the transmittance decay of the scope 2.

[0077] Some other solutions are to use special equipment to detect the light output spectrum of the insertion part 22 of the mirror body 2, so as to adjust the light output of each light emitting element 111 according to the detection result. This method is complicated to operate and consumes manpower and material resources.

[0078] To this end, in another embodiment of the present application, see Figures 7 to 9 The light source device 1 may include a second detection optical fiber 16 and a detection window 17 . A probe 161 of the second detection optical fiber 16 is disposed inside the detection window 17 , and the other end is connected to the spectrum sensing module 13 .

[0079] The detection window 17 is provided on the housing 18. The detection window 17 is used for detachably connecting the insertion portion 22 of the mirror body 2. When it is necessary to detect the light spectrum of the insertion portion 22 of the mirror body 2, as shown in FIG. Figure 7 As shown, the insertion portion 22 of the mirror body 2 can be directly connected to the detection window 17, so that the second detection optical fiber 16 collects the output light of the insertion portion 22. In one example, the detection window 17 can be a cylindrical structure, and the insertion portion 22 of the mirror body 2 can be inserted and abutted and fixed in the cylindrical structure. A fixing structure 19 can be set inside the detection window 17, and the probe 161 of the second detection optical fiber 16 can be fixed at the detection window 17.

[0080] The second detection optical fiber 16 transmits the collected outgoing light to the spectrum sensing module 13. At this time, the spectrum sensing module 13 receives the stray light transmitted from the first detection optical fiber 12 and the outgoing light transmitted from the second detection optical fiber 16, and obtains the second spectrum data by detecting the superimposed light of the stray light and the outgoing light.

[0081] It can be understood that the second spectral data is the superimposed spectrum of the light output spectrum of the light output window 15 and the light output spectrum of the mirror body 2. Therefore, by subtracting the first spectral data from the second spectral data, the superimposed spectrum of the light output spectrum of the mirror body 2 can be obtained (which can be called the third spectral data in this embodiment of the application).

[0082] It is worth noting that the light source device 1 provided in the embodiment of the present application, by adding a second detection optical fiber 16 and a detection window 17, the user only needs to connect the insertion part 22 of the mirror body 2 to the detection window 17 to realize the detection of the actual spectrum of the output light of the mirror body 2, without the need for other auxiliary tools and professional maintenance personnel to operate, which greatly improves the detection efficiency and saves manpower and material resources.

[0083] based on Figures 7 to 9 The light source device 1 shown in the figure, an embodiment of the present application also provides another dimming method, which may include:

[0084] S201 , in response to a first trigger instruction, the dimming module 14 acquires first spectrum data from the spectrum sensing module 13 .

[0085] S202 , when the dimming module 14 obtains the second spectrum data from the spectrum sensing module 13 , the dimming module 14 subtracts the first spectrum data from the second spectrum data to obtain third spectrum data, where the third spectrum data is the light output spectrum of the insertion portion 22 .

[0086] In an example, the dimming module 14 may acquire the second spectrum data from the spectrum sensing module 13 when detecting the second trigger instruction.

[0087] The first trigger instruction and the second trigger instruction can both be user instructions. For example, the light source device 1 further includes a human-computer interaction module (eg, a touch screen, operation buttons, etc.), and the user can input the trigger instruction through the human-computer interaction module.

[0088] In one scenario, when the user requires the light source device 1 to adaptively adjust the light quantity ratio of each light emitting element 111, the user can first input a first trigger instruction so that the spectrum sensing module 13 receives the stray light detected by the first detection optical fiber 12 and detects and obtains the first spectrum data. The dimming module 14 first obtains the first spectrum data from the spectrum sensing module 13.

[0089] Afterwards, 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 in the detection window 17, and transmits the outgoing light to the spectrum sensing module 13. At this time, the light received by the spectrum sensing module 13 is the superposition light of the outgoing light of the insertion portion 22 and the stray light of the light exit window, thereby detecting and obtaining the second spectrum data.

[0090] The user then inputs a second trigger instruction to trigger the dimming module 14 to obtain second spectrum data from the spectrum sensing module 13 .

[0091] After the dimming module 14 obtains the first spectrum data and the second spectrum data based on the first trigger instruction and the second trigger instruction, the third spectrum data can be calculated.

[0092] Optionally, the first trigger instruction may be a periodic instruction, and the second trigger instruction is a user instruction. For example, a timer may be set in the dimming module 14 to periodically read the first spectrum data from the spectrum sensing module 13. When the user requires the light source device 1 to adaptively adjust the light quantity ratio of each light-emitting element 111, 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 in the detection window 17, and transmits the outgoing light to the spectrum sensing module 13. At this time, the spectrum sensing module 13 detects the superimposed light of the outgoing light of the insertion portion 22 and the stray light of the light exit window to obtain the second spectrum data. Afterwards, the user inputs the second trigger instruction to trigger the dimming module 14 to obtain the second spectrum data from the spectrum sensing module 13.

[0093] As another optional 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 can be detected by the second detection optical fiber 16 may be the light that is emitted after the ambient light passes through the detection window 17, or the light that is emitted after the mirror body 2 is inserted. Considering that the light intensity output by the mirror body in actual applications (the light intensity can be quantified in the form of luminous flux or brightness) is relatively strong, and is generally much higher than the light intensity of the ambient light that is emitted after passing through the detection window 17, the reasons are: 1. The light intensity output by the mirror 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 be emitted into 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 of the spectral sensing module 13 detecting stray light, and when the spectral sensing module 13 detects a sudden change in light intensity.

[0094] 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%.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] In this scenario, the dimming module 14 periodically obtains spectral data from the spectral sensor module 13. When it is identified 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 period and the second spectral data obtained in the current period.

[0099] S203 , the dimming module 14 updates the first light intensity ratio according to the third spectrum data and a preset third light intensity ratio, where the third light intensity ratio represents a desired light intensity ratio of the light output spectrum of the insertion portion 22 .

[0100] Exemplarily, based on the above example, still taking the case where multiple light-emitting elements 111 include a red LED, a green LED, a blue LED and a purple LED, and the target light emission mode is a white light mode, the working principle of the light source device 1 monitoring and adjusting the light emission state of the mirror body 2 is exemplarily explained.

[0101] When the light source device 1 leaves the factory, the dimming module 14 is also preset with a third light intensity ratio. The third light intensity ratio represents the expected light intensity ratio of the light spectrum of the insertion portion 22 of the mirror body 2 in the white light mode. Assuming c r :1:c b :c uv .

[0102] After the light source device 1 starts the white light mode, the dimming device 14 adjusts the light intensity ratio a according to the first light intensity ratio a currently stored. r :1:a b :a uv Output driving 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 exit window 15, and transmits the stray light to the spectrum sensing module 13 to generate the first spectrum data f1(λ).

[0103] The insertion part 22 of the mirror body 2 is plugged into the detection window 17, and the second detection optical fiber 16 detects the outgoing light of the insertion part 22 of the mirror body 2 in the detection window 17, and transmits the outgoing light to the spectrum sensing module 13, and the spectrum sensing module 13 generates the second spectrum data f2(λ) of the outgoing light. The second spectrum data f2(λ) is the superposition spectrum of the outgoing light spectrum of the mirror body 2 and the outgoing light spectrum of the light source device 1. Therefore, the dimming device 4 can obtain the outgoing light spectrum f3(λ) of the mirror body 2 by calculating the difference between f2(λ) and f2(λ), that is, f3(λ)=f2(λ)-f1(λ).

[0104] The dimming device 4 calculates the actual light quantity ratio c' of the light spectrum f3(λ) of the mirror body 2 according to the following formula: r :1:c' b :c' uv .

[0105]

[0106] Dimming module 4 will c r ':1:c b ':c uv ' and the third light quantity ratio c r :1:c b :c uv Compare. Determine whether the light quantity 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 f3(λ) is 0.92:1:0.41:0.20, indicating that the light quantity of blue light and purple light is low, and the proportions that need to be adjusted up are 0.45 / 0.41 -1=9.8% and 0.22 / 0.20-1=10.0%, respectively. The dimming device 14 adjusts the a in the first light quantity ratio b Increased by 9.8%, uv Increase by 10.0%, and output driving current according to the updated first light intensity ratio, so that the red LED, green LED, blue LED and purple LED emit light beams according to the updated first light intensity ratio, thereby ensuring that the spectrum of the output light of the mirror body 2 is the accurate spectrum in the white light mode.

[0107] It is worth noting that 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 portion 22 of the mirror body 2 to the detection window 17 to realize the monitoring of the light spectrum of the output light of the mirror body 2, and adjust the first light quantity ratio of each light-emitting element 111 according to the feedback of the monitoring result. Thereby, it is ensured that the light quantity ratio of the output light of the mirror body 2 is stably maintained at the third light quantity ratio corresponding to the target light output mode, so that the mirror body 2 can stably and accurately output the output light of the target light output mode. And no other auxiliary tools are required, and no professional maintenance personnel are required to operate, which greatly improves the monitoring efficiency and saves manpower and material resources.

[0108] In addition, the dimming module 14 is relatively r ':1:c b ':c uv ' and the third light quantity ratio c r :1:c b :c uv In the process, the light attenuation degree of the mirror body 2 for each color light path can be reflected according to the comparison result. For example, the light attenuation law of the mirror body 2 for each color light path is: 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)<(c uv ' / c uv -1). In actual use, the attenuation of the red and green optical paths is relatively low, but due to the inherent characteristics of 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 endoscopic image, and it cannot be solved by increasing the overall lighting brightness.

[0109] The light source device 1 provided in the present application can accurately monitor the attenuation of each color light path and perform feedback adjustment by analyzing the light intensity ratio of the emitted light, so that the light intensity of blue light and purple light remains stable to ensure the imaging effect of shallow tissue on the endoscopic image.

[0110] It can be understood that the light source device 1 provided in the present application can simultaneously monitor the light emission status of the light source and the light emission status of the scope, while eliminating adverse effects inside the light source and the scope, thereby ensuring the accuracy of the endoscopic image.

[0111] In one example, the dimming module 14 may further include a communication unit to perform 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 spectrum data, for example, which color light path of the light output from the light output window 15 has an abnormal decrease or abnormal increase in the light output amount. The dimming module 14 may send the first light output state information obtained by analysis to an external device, which is a client device or a server.

[0112] Optionally, the dimming module 14 can also determine the second light output state information of the mirror body 2 according to the second spectrum data, for example, which color light path has an abnormally decreased or abnormally increased light output in the output light of the mirror body 2. The dimming module 14 can send the analyzed second light output state information to an external device.

[0113] 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 easily obtain the usage of a large number of clients, and improve the design of the light source device 1 and the mirror body 2 by statistically analyzing the large amount of light output state information.

[0114] 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 to the outside of 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 use of the light source device 1 and the mirror body 2 connected to the light source device 1.

[0115] It is worth noting that the light source device 1 provided in the present application can be connected to different types of mirror bodies 2 to achieve detection of different human organs. For example, the mirror body 2 can be a hose-type endoscope or a hard-tube endoscope. Exemplarily, the mirror body 2 can be a gastroscope, a colonoscope, a laryngoscope, a fiber bronchoscope, a laparoscope, a thoracoscope, a ureteroscope, a cystoscope, an arthroscope, a hysteroscope, etc., and the present application does not limit this.

[0116] 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 mirror 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 combined into an all-in-one machine, that is, the two are the same device. In this case, the endoscope system can be described as including: a display, and the light source device 1 and the mirror 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.

[0117] It should be noted that, in the description of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0118] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0119] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean 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, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0120] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0121] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, 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 the present application.

Claims

1. A light source device (1), It is 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, It is 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, It is characterized in that The light emitting lens barrel (113) is provided with a mounting groove, and the probe (121) of the first detection optical fiber (12) is fixed in the mounting groove and faces the light combining component (1121).

4. The light source device (1) according to claim 1, It is 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.

5. The light source device (1) according to claim 4, It is 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.

6. The light source device (1) according to any one of claims 1 to 5, It is 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).

7. The light source device (1) according to claim 6, It is 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).

8. An endoscope system, It is 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 7, and a mirror body (2).

9. A dimming method, It is characterized in that Applied to the light source device (1) as claimed in claim 6 or 7, the method comprises: In response to a first trigger instruction, the dimming module (14) acquires the first spectrum data from the spectrum sensing module (13); The dimming module (14) updates a first light quantity ratio between the emission light beams of the plurality of light emitting elements (111) according to the first spectrum data and a preset second light quantity ratio, wherein the second light quantity ratio represents a desired light quantity ratio of the light emission spectrum of the light emission window (15).

10. The method according to claim 9, It is characterized in that When the light source device (1) further comprises a second detection optical fiber (16) and a detection window (17), after the dimming module (14) acquires the first spectrum data from the spectrum sensing module (13), the method further comprises: When the dimming module (14) obtains the second spectrum data from the spectrum sensing module (13), the dimming module (14) obtains third spectrum data based on the difference between the first spectrum data and the second spectrum data, and the third spectrum data is the light output spectrum data of the insertion part (22); The dimming module (14) updates the first light quantity ratio according to the third spectrum data and a preset third light quantity ratio, wherein the third light quantity ratio represents a desired light quantity ratio of the light output spectrum of the insertion portion (22).

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