A light source device and a medical endoscope system

Abstract

The present application relates to a light source device and a medical endoscope system. The device includes: a light source and a light source transmission module; one end of the light source transmission module is an input end, and the other end is an output end, the input end is correspondingly connected to the light source, and the light emitted by the light source is transmitted to the light source transmission module through the input end, and is output through the output end; the light source transmission module includes a plurality of branch optical fiber bundles, one end of each of the plurality of branch optical fiber bundles is formed at a target end, and the target end includes any one of the input end and the output end; the parts of the plurality of branch optical fiber bundles away from the target end are wound and arranged to be formed at the other end, and the other end includes the other one of the input end and the output end except the target end. In the present device, the light emitted by the light source is transmitted to each branch optical fiber bundle through the input end, and is output through the output end, so as to ensure the uniformity of light during the transmission process, and at the same time, there is no need to use other optical elements to couple or disperse the light source, thereby improving the light source transmission efficiency.

Description

Technical Field

[0001] The present application relates to the field of light source technology, and in particular to a light source device and a medical endoscope system. Background Art

[0002] In a medical endoscope system, a light source is transmitted to the endoscope body through a light source device, thereby providing an illumination function for an object to be observed.

[0003] In traditional technology, light source systems such as xenon lamp systems, LED cold light sources and semiconductor laser systems can be used to transmit the light source to the end face of the light guide of the endoscope body through a matching collimating lens and focusing lens, or through a beam combining optical device.

[0004] However, the current light source system has a complex structure, large volume, and optical devices have absorption and reflection effects on light, which reduces the overall transmission efficiency of the light source. Summary of the invention

[0005] Based on this, it is necessary to provide a light source device and a medical endoscope system that can improve the light source transmission efficiency in order to solve the above technical problems.

[0006] In a first aspect, the present application provides a light source device, the device comprising:

[0007] A light source; and a light source transmission module, wherein one end of the light source transmission module is an input end, and the other end is an output end, the input end is connected to the light source correspondingly, and the light emitted by the light source is transmitted to the light source transmission module through the input end and output through the output end;

[0008] Wherein, the light source transmission module comprises a plurality of branch optical fiber bundles, one end of each of the plurality of branch optical fiber bundles is formed at a target end, and the target end comprises any one of the input end and the output end; the portions of the plurality of branch optical fiber bundles away from the target end are wound and arranged to be formed at the other end, and the other end comprises the other one of the input end and the output end except the target end;

[0009] The light emitted by the light source is transmitted to each branch optical fiber bundle through the input end, and is output through the output end.

[0010] In one embodiment, the target ends of the multiple branch optical fiber bundles are all input ends, the other ends of the multiple branch optical fiber bundles are all output ends, and the multiple branch optical fiber bundles are wound around the parts close to the output ends to form a total output end; the light sources include multiple light sources, each of which corresponds to each input end, and the light emitted by the multiple light sources is transmitted to the corresponding branch optical fiber bundles through the corresponding input ends, and output through the total output end.

[0011] In one embodiment, the target ends of the multiple branch optical fiber bundles are all output ends, the other ends of the multiple branch optical fiber bundles are all input ends, the light source transmission module includes an input end and multiple output ends, and the multiple branch optical fiber bundles are wound around the part close to the input end to form a total input end; the light emitted by the light source is transmitted to the corresponding branch optical fiber bundles through the total input end, and is output through the multiple output ends.

[0012] In one embodiment, each branch fiber optic bundle includes a plurality of optical fibers, one end of each of which is formed at the target end; portions of the plurality of optical fibers facing away from the target end are wound around to form at the other end; and light emitted by the light source is transmitted to the plurality of optical fibers through the input end and output through the output end.

[0013] In one embodiment, a plurality of optical fibers corresponding to each branch optical fiber bundle are arranged at equal intervals at the input end and / or the output end.

[0014] In one embodiment, a plurality of optical fibers corresponding to each branch optical fiber bundle are arranged in a matrix at the input end and / or the output end according to a preset interval.

[0015] In one embodiment, the light surface shape of the light source is matched with the cross-sectional shape of the corresponding branch optical fiber bundle.

[0016] In one of the embodiments, when the light surface size of the light source is equal to the sectional size of the corresponding branch optical fiber bundle, the coupling efficiency between the light source and the branch optical fiber bundle increases as the numerical aperture of the branch optical fiber bundle increases.

[0017] In the second aspect, the present application also provides a medical endoscope system, including an endoscope body and the light source device; the endoscope body is connected to the output end of the light source device, and the light output by the light source is transmitted to the endoscope body through the output end of the light source device, and is output through the front end of the endoscope body and irradiated to the object to be observed.

[0018] In one embodiment, the system also includes a camera device and a display device; the camera device is arranged at the front end of the endoscope body and is connected to the display device. Under the lighting environment provided by the light source device, the camera device obtains the image of the object to be observed and transmits the image to the display device for display.

[0019] The above-mentioned light source device and medical endoscope system are achieved by forming one end of a plurality of branch optical fiber bundles at a target end, the target end including one of an input end and an output end, and winding a portion away from the target end to form the other end, the other end including the other of the input end and the output end except the target end, so that the light emitted by the light source is transmitted to each branch optical fiber bundle through the input end and output through the output end, so as to ensure the uniformity of light during the transmission process, and at the same time, there is no need to use other optical elements to couple or disperse the light source, thereby improving the light source transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are 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 work.

[0021] Figure 1 is a structural block diagram of a light source device in one embodiment;

[0022] Figure 2 is a structural block diagram of a light source device in yet another embodiment;

[0023] Figure 3 This is a schematic diagram of the structure of a light source surface in an embodiment;

[0024] Figure 4 FIG. 1 is a schematic diagram showing the principle of an optical fiber bundle receiving a light source in one embodiment. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Optional embodiments of the present invention are provided in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] In the related art, light source systems such as xenon lamp systems, LED cold light source systems, and semiconductor laser systems are usually used to provide lighting functions. Among them, the above optical systems are usually equipped with optical elements such as collimating lenses and focusing lenses, and the light emitted by the light source is output to the target object through the above complex combination of optical elements; secondly, when it comes to splitting the light source for transmission, it is necessary to add additional beam splitting optical devices, through which the performance of the combined light is controlled to adjust the light energy incident on the target object; furthermore, when it comes to combining multiple light sources for transmission, it is necessary to add additional beam combining optical devices, through which the performance of the combined light is controlled to adjust the light energy incident on the target object.

[0028] Due to the above-mentioned complex combination of optical elements, additional beam splitting optical devices or beam combining optical devices, the corresponding system structure of the light source system in the related art becomes more complicated and the system volume increases. At the same time, due to the absorption and reflection of light by the optical components themselves, the loss of the light source of the light source system during the coupling or separation process increases, thereby reducing the transmission efficiency of the light source in the light source system.

[0029] In order to solve the above problems, the present application provides a light source device, which includes a light source and a light source transmission module; the light source is used to generate light, and the light source transmission module is used to transmit the light generated by the light source to a target object, which can be represented by components such as optical fibers, optical sensors, optical elements, or electronic devices such as imaging devices and communication devices.

[0030] Among them, one end of the light source transmission module is the input end, and the other end is the output end. The input end is correspondingly connected to the light source. The light emitted by the light source is transmitted to the light source transmission module through the input end and output through the output end.

[0031] The light source transmission module includes a plurality of branch optical fiber bundles, one end of each of which is formed at a target end, and the target end includes any one of an input end and an output end; the plurality of branch optical fiber bundles are wound and arranged at a portion away from the target end to form the other end, and the other end includes the other of the input end and the output end except the target end. The light emitted by the light source is transmitted to each branch optical fiber bundle through the input end and output through the output end.

[0032] Exemplarily, one end of the plurality of branch optical fiber bundles is formed correspondingly at the plurality of input ends, and the plurality of branch optical fiber bundles are wound at the portion away from the input end to form an output end. In another exemplary embodiment, one end of the plurality of branch optical fiber bundles is formed correspondingly at the plurality of output ends, and the plurality of branch optical fiber bundles are wound at the portion away from the output end to form an input end.

[0033] Among them, multiple branch optical fiber bundles are arranged in a winding manner near the output end or near the input end, so that the light emitted by the light source can be evenly coupled or evenly separated through the winding arrangement structure after entering the corresponding branch optical fiber bundle.

[0034] Among them, the winding setting refers to the winding of the optical fiber bundle through preset parameters such as winding radius, winding mode, and tightness. The winding radius refers to the bending radius used when winding the optical fiber bundle; the winding radius can be expressed as the minimum bending radius allowed for the optical fiber bundle when winding. Tightness refers to the density of the optical fiber bundle relative to the winding axis when winding; high tightness means that the optical fiber bundle is tightly wound, and low tightness means that the optical fiber bundle is loosely wound. The winding mode refers to the path or pattern that describes the winding process of the optical fiber bundle; the winding mode can be expressed as a spiral winding mode, that is, multiple branch optical fiber bundles are arranged in a spiral shape along a preset winding axis.

[0035] Optionally, when winding and setting multiple branch optical fiber bundles, the expected starting point, expected ending point and expected path corresponding to each optical fiber bundle are clearly defined, and a corresponding identifier is set for each corresponding position information to ensure that the actual starting point, actual ending point and actual path corresponding to each optical fiber bundle are within the expected range.

[0036] Optionally, during the winding process, the position and state of the optical fiber bundle are monitored in real time, and the position of the abnormal optical fiber bundle is adjusted in time to ensure that the optical fiber bundle is wound according to the expected setting. Furthermore, after the winding process is completed, the optical fiber bundle can be tested and verified to ensure that the actual winding result of the optical fiber bundle is consistent with the expected winding result.

[0037] Optionally, one of the parameters such as winding radius, winding method, tightness, etc. can be selected as an independent variable, and the selected independent variable can be taken according to different gradient intervals. The light source output efficiency corresponding to the independent variable in different gradient intervals is tested respectively, and the optimal value range for the independent variable is obtained according to the test results.

[0038] Exemplarily, the number of branch optical fiber bundles is not limited to a specific number, and a corresponding number of branch optical fiber bundles can be selected according to actual light transmission requirements to achieve the above-mentioned light source coupling or separation function.

[0039] Exemplarily, the light source may be an LED light source, and multiple light sources may be provided. When multiple light sources are provided, when the light source device is in working state, all light sources may be selected to illuminate at the same time, or corresponding light sources may be selected for illumination according to actual lighting needs.

[0040] For example, the light source and the light source transmission module may be directly connected or connected via an optical element.

[0041] In this embodiment, one end of a plurality of branch optical fiber bundles is formed into a plurality of target ends respectively, and a plurality of branch optical fiber bundles are wound and arranged at a portion away from the target end to form the other end, the target end and the other end are respectively any one of the input end and the output end, and the light emitted by the light source is transmitted to the corresponding branch optical fiber bundle through the corresponding input end, and is uniformly output through the output end without adding other optical elements, thereby realizing coupled transmission or separated transmission of the light source, and ensuring that the light at the output end has strong uniformity, thereby improving the transmission efficiency of the light source.

[0042] In an exemplary embodiment, Figure 1 As shown, a light source device is provided, which includes a plurality of light sources 101 and a light source transmission module 102 .

[0043] One end of the light source transmission module 102 includes multiple input ends 103, and the other end is a total output end 104; the multiple input ends 103 are connected to the multiple light sources 101 one by one, and the light emitted by each light source 101 is transmitted to the light source transmission module 102 through the corresponding input end 103, and output through the total output end 104.

[0044] Among them, the light source transmission module 102 includes multiple branch optical fiber bundles, one end of the multiple branch optical fiber bundles is respectively formed as multiple input ends 103, and the multiple branch optical fiber bundles are wound and arranged at the parts away from the input ends 103 to form a total output end 104; the light emitted by the multiple light sources 101 is respectively transmitted to the corresponding branch optical fiber bundles through the corresponding input ends 103, and output through the total output end 104.

[0045] Exemplarily, multiple branch optical fiber bundles are arranged in a winding manner near the output end, and the light emitted by each light source pair is transmitted to the corresponding branch optical fiber bundle through the corresponding input end, and after passing through the winding arrangement structure of each branch optical fiber bundle, it is output through a total output end. It can be obtained that the light emitted by each light source, after passing through the winding arrangement structure, presents a uniformly coupled state at the total output end, that is, as the path of the optical fiber bundle changes, the movement path of the light also changes. Finally, the light emitted by different light sources tends to an overall uniformly mixed transmission state at the total output end as the mixed bundle arrangement state of multiple branch optical fiber bundles.

[0046] In this embodiment, by forming one end of a plurality of branch optical fiber bundles into a plurality of input ends respectively, and winding the plurality of branch optical fiber bundles at the parts away from the input ends to form a total output end, the light emitted by a plurality of light sources is transmitted to the corresponding branch optical fiber bundles through the corresponding input ends respectively, and is uniformly output through the total output end without adding other optical elements for coupling, thereby realizing the coupled transmission of a plurality of light sources and ensuring that the light at the output end has strong uniformity, thereby improving the coupling and transmission efficiency of the light source.

[0047] Furthermore, in the above-mentioned embodiment, light is coupled and transmitted by selecting multiple fiber optic bundles that are twisted and arranged, without adding other optical elements, thereby avoiding the influence of the light absorption or light reflection characteristics of the optical elements themselves on the light transmission process; at the same time, one-end output can be achieved by using multiple branch fiber optic bundles, which is beneficial to reducing the volume of the light source device, simplifying the system design, and reducing the assembly process precision requirements, thereby improving the system operation freedom and cost-effectiveness.

[0048] In an exemplary embodiment, Figure 2 As shown, a light source device is provided, which includes a light source 201 and a light source transmission module 202 .

[0049] One end of the light source transmission module 202 is a total input end 203 , and the other end includes multiple output ends 204 ; the total input end 203 is correspondingly connected to the light source 201 , and the light emitted by the light source 201 is transmitted to the light source transmission module 202 through the total input end 203 and output through multiple output ends 204 .

[0050] Among them, the light source transmission module 202 includes multiple branch optical fiber bundles, one end of each of the multiple branch optical fiber bundles is formed as multiple output ends 204, and the multiple branch optical fiber bundles are wound around the parts away from the output ends 204 to form a total input end 203; the light emitted by the light source 201 is transmitted to the corresponding branch optical fiber bundles through the total input end 203, and is output through multiple output ends 204.

[0051] Exemplarily, multiple branch optical fiber bundles are arranged to be wound in the part near the input end, so that the light emitted by the light source is transmitted to each branch optical fiber bundle through a total input end, and is output through each output end after passing through the winding arrangement structure of each branch optical fiber bundle. It can be obtained that the light emitted by the light source, after passing through the winding arrangement structure, is in a uniformly separated state at the output end, that is, as the path of the optical fiber bundle changes, the moving path of the light also changes, and finally the light emitted by the light source tends to be uniformly mixed in each output end according to the mixed beam arrangement state of multiple branch optical fiber bundles.

[0052] Optionally, when the light uniformity of the light source is weak, the optical fiber bundle is split in a mixed manner to reduce the influence of the weak light uniformity of the light source, thereby relatively enhancing the light uniformity in the output end corresponding to each split beam.

[0053] Optionally, Figure 2 The light source transmission module 202 is introduced by taking three branch optical fiber bundles as an example, and the same light source separation function can be further realized by using other numbers of branch optical fiber bundles.

[0054] In this embodiment, one end of a plurality of branch optical fiber bundles is formed into a plurality of output ends respectively, and the plurality of branch optical fiber bundles are wound around the parts away from the output ends to form a total input end. The light emitted by the light source is uniformly transmitted to the corresponding branch optical fiber bundles through the total input end, and is output through a plurality of output ends. Thus, the light source can be separated and transmitted, and at the same time, the light at the output end is ensured to have strong uniformity, thereby improving the separation and transmission efficiency of the light source.

[0055] Furthermore, in the above-mentioned embodiment, light is separated and transmitted by selecting multiple fiber optic bundles that are twisted and arranged, without adding other optical elements, thereby avoiding the influence of the light absorption or light reflection characteristics of the optical elements themselves on the light transmission process; at the same time, multi-end output can be achieved by using one light source and multiple branch fiber optic bundles, which is beneficial to reduce the number of light sources, reduce the volume of the light source device, simplify the system design, reduce the assembly process precision requirements, and thus improve the system operation freedom and cost performance.

[0056] In an exemplary embodiment, Figure 1 Taking the light source device shown as an example, each branch fiber bundle includes a plurality of optical fibers, one end of each of the plurality of optical fibers is formed at a plurality of input ends 103, and portions of the plurality of optical fibers away from the input ends 103 are wound to form an output end 104. Light emitted by the plurality of light sources is transmitted to the plurality of optical fibers through the corresponding input ends 103, and is output through the output end 104.

[0057] Alternatively, all optical fibers may be mixed and arranged in a spiral shape along a predetermined winding axis.

[0058] Among them, when all optical fibers are wound and set, the expected starting point, expected ending point and expected path corresponding to each optical fiber are clearly defined, and each corresponding position information is set with a corresponding identifier to ensure that the actual starting point, actual ending point and actual path corresponding to each optical fiber are within the expected range.

[0059] As the number of optical fibers increases, the corresponding optical fiber density at the output end will also increase, allowing all optical fibers to be mixed and arranged more evenly at the output end, thereby making the light transmitted by each branch optical fiber bundle more evenly distributed at the output end.

[0060] Optionally, the number of optical fibers corresponding to each branch optical fiber bundle can be determined according to parameters such as the winding radius, winding method, and tightness of the optical fiber. It can be understood that the number of optical fibers corresponding to each branch optical fiber bundle can be used as an independent variable, and values ​​are taken according to different gradient intervals, and the light source output efficiency corresponding to the number of optical fibers in different gradient intervals is tested respectively, and the optimal value range for the number of optical fibers is obtained according to the test results.

[0061] In this embodiment, by arranging a plurality of optical fibers in the branch optical fiber bundle and winding the plurality of optical fibers, the light uniformity of the light source during the coupling process can be further improved by increasing the number of optical fibers.

[0062] In an exemplary embodiment, Figure 2 Taking the light source device shown as an example, each branch fiber bundle includes a plurality of optical fibers, one end of each of the plurality of optical fibers is formed at a plurality of output ends 204, and portions of the plurality of optical fibers away from the output ends 204 are wound and arranged to form an input end 203. Light emitted by the light source is transmitted to the plurality of optical fibers through the input end 203 and output through the plurality of output ends 204.

[0063] In this embodiment, by arranging a plurality of optical fibers in the branch optical fiber bundle and winding the plurality of optical fibers, the light uniformity of the light source during the separation process can be further improved by increasing the number of optical fibers.

[0064] In an exemplary embodiment, a plurality of optical fibers corresponding to each branch optical fiber bundle are arranged at equal intervals at the input end or the output end.

[0065] Exemplarily, in a plurality of branch fiber bundles corresponding to a plurality of output ends at a total input end, a plurality of optical fibers corresponding to each branch fiber bundle are arranged at equal intervals at the total input end, that is, a plurality of optical fibers corresponding to each branch fiber bundle are arranged at equal intervals on the cross section of the total input end.

[0066] Exemplarily, in multiple branch fiber bundles corresponding to multiple input ends to a total output end, the several optical fibers corresponding to each branch fiber bundle are arranged at equal intervals at the total output end, that is, the several optical fibers corresponding to each branch fiber bundle are arranged at equal intervals on the cross section of the total output end.

[0067] Optionally, a plurality of optical fibers corresponding to each branch optical fiber bundle are arranged at equal intervals on each cross section corresponding to the path from the input end to the output end.

[0068] Optionally, the several optical fibers corresponding to each branch optical fiber bundle are arranged in a circular array at the input end or output end with the center of the input end or output end as the center of the circle; furthermore, the several optical fibers corresponding to each branch optical fiber bundle are arranged in a matrix at the input end or output end according to a preset spacing.

[0069] Optionally, all optical fibers corresponding to the plurality of branch optical fiber bundles may be randomly wound and arranged so that each optical fiber is randomly arranged at the output end.

[0070] In this embodiment, a plurality of optical fibers corresponding to each branch optical fiber bundle are arranged at equal intervals at the output end to ensure that the light emitted from the output end has strong uniformity during the coupling or separation process of the light source.

[0071] In an exemplary embodiment, the light surface shape of the light source is adapted to the cross-sectional shape of the corresponding branch optical fiber bundle.

[0072] Among them, the light surface of the light source refers to the surface from which the light source emits light. The section of the branch fiber bundle refers to the cross-section of the fiber bundle; the section of the branch fiber bundle can be expressed as the cross-section corresponding to the end for inputting the light source. Adaptation can be understood as the size, shape or structure between objects being able to match, fit or fit each other to achieve a specific purpose or function; the adaptation of the light surface shape of the light source to the corresponding section shape of the branch fiber bundle can be expressed as, based on the adapted light surface shape and section shape, the light emitted by the light source can be efficiently transmitted to the branch fiber bundle.

[0073] Exemplarily, through the adaptation relationship between the light surface shape of the light source and the cross-sectional shape of the corresponding branch optical fiber bundle, the light surface of the light source or the cross-sectional shape of the branch optical fiber bundle is adjusted so that the light emitted by the light source can completely cover the input end of the branch optical fiber bundle, avoiding the presence of gaps that affect the uniformity of the light.

[0074] Exemplarily, by adapting the relationship between the light surface shape of the light source and the cross-sectional shape of the corresponding branch optical fiber bundle, the light surface of the light source or the cross-sectional shape of the branch optical fiber bundle is adjusted so that the light emitted from the light surface of the light source can completely fall into the cross-sectional shape of the branch optical fiber bundle, thereby avoiding light leakage and causing light source waste or light source crosstalk.

[0075] Alternatively, if Figure 3 As shown, when the cross section of the optical fiber bundle is circular, the light surface shape of the light source can be circular, and the size of the circular light surface can be adapted to the cross section of the optical fiber bundle. For example, the size of the circular light surface is greater than or equal to the input end section of the optical fiber bundle, so that the light emitted by the circular light surface can cover the optical fiber bundle with a circular cross section. It can be understood that in other embodiments, the light surface shape of the light source can also be elliptical, which is used to adapt to the optical fiber bundle with an elliptical cross section, and no further limitation is made here.

[0076] In this embodiment, by matching the light surface shape of the light source with the cross-sectional shape of the corresponding branch optical fiber bundle, it is ensured that the light source enters the branch optical fiber bundle completely and evenly to improve the light uniformity. At the same time, it can also reduce the waste of light source caused by the light surface size of the light source being much larger than the cross-sectional size of the optical fiber bundle.

[0077] The coupling efficiency of the light source device of any one of the above embodiments or a combination of multiple embodiments is further explained as follows:

[0078] like Figure 4 As shown, according to the cosine law of luminous intensity, the LED light source emits light on one side, and the total luminous flux corresponding to the light it emits is for:

[0079]

[0080] in, Expressed as brightness, Expressed as the luminous area.

[0081] Due to the numerical aperture parameter of the fiber bundle itself, the LED light source is limited at half apex angle. The light emitted in the corresponding cone can be coupled into the optical fiber bundle for transmission, and the half apex angle The luminous flux radiated in the corresponding cone for:

[0082]

[0083] Furthermore, the coupling efficiency of the optical fiber bundle to the LED light source can be obtained: for:

[0084]

[0085] According to the invariant of the image space, that is, the Lagrange invariant:

[0086]

[0087] in, Expressed as the light surface size of the LED light source, Expressed as the cross-sectional size of the optical fiber bundle, Expressed as the LED object-space refractive index, Expressed as the refractive index of the fiber bundle in image space, Expressed as the fiber bundle numerical aperture.

[0088] We can get:

[0089]

[0090] Finally, the coupling efficiency of the fiber bundle to the LED light source for:

[0091] Formula (1)

[0092] From formula (1), we can get the coupling efficiency The square of the numerical aperture of the fiber bundle Proportional to the light surface size of the LED light source Inversely proportional to the cross-sectional size of the fiber bundle Directly proportional.

[0093] Therefore, in any of the above embodiments, when the light surface size of the light source is equal to the cross-sectional size of the optical fiber bundle, the coupling efficiency between the light source and the optical fiber bundle is only related to the numerical aperture of the optical fiber bundle, and increases with the increase of the numerical aperture of the optical fiber bundle.

[0094] For example, in formula (1), the light surface size of the LED light source is Cross-sectional dimensions of the fiber bundle Under the same conditions, when the numerical aperture NA of the fiber bundle is 0.8, the light source transmission efficiency is It is 64%.

[0095] Therefore, in any of the above embodiments, when the light surface size of the light source is smaller than the cross-sectional size of the optical fiber bundle, the coupling efficiency between the light source and the optical fiber bundle tends to a stable value based on the characteristics of the LED light source itself. The stable value is represented by the mutual adaptation between the output capacity of the light source and the receiving capacity of the optical fiber bundle, so that the optical coupling between the light source and the optical fiber bundle reaches a relatively stable state, thereby avoiding drastic fluctuations caused by slight changes in parameters.

[0096] In this embodiment, the expected light source coupling efficiency is efficiently obtained by adjusting the numerical relationship between the light source light surface size and the optical fiber bundle size.

[0097] In an exemplary embodiment, a medical endoscope system is provided, which includes a light source device, an endoscope body, a camera device, and a display device.

[0098] The endoscope body is connected to the output end of the light source device, and the light output by the light source is transmitted to the endoscope body through the output end of the light source device, and is output through the front end of the endoscope body and irradiates the object to be observed.

[0099] The camera device is arranged at the front end of the endoscope body and is connected to the display device for communication. Under the lighting environment provided by the light source device, the camera device obtains the image of the object to be observed and transmits the image to the display device for display.

[0100] Among them, the endoscope body includes a light guide component, and the light emitted by the light source device is transmitted to the light guide component of the endoscope body through the output end, and is transmitted to the front end of the endoscope body through the light guide component to illuminate the object to be observed in the field of view corresponding to the front end of the endoscope body.

[0101] Optionally, after the camera device obtains the image of the object to be observed, the image can be processed by computer software or hardware circuits with image processing functions to improve the contrast, brightness and color balance in the image, and remove noise and artifacts.

[0102] Optionally, the generated images can be stored in a database for the convenience of archiving and recording by medical personnel. Furthermore, the generated images and corresponding optical parameters can be stored in the database in association, so as to analyze the optical parameter settings according to the actual imaging quality, thereby obtaining the optimal optical parameters; wherein the optical parameters can include the optical parameters of the light source and the light source transmission module respectively, the optical parameters of the light source can include parameters such as light intensity, light source color, and light source stability, and the optical parameters of the light source transmission module can include parameters such as the number of optical fiber bundles, the number of optical fibers, the optical fiber density corresponding to the input end, the optical fiber density corresponding to the output end, and the degree of optical fiber winding.

[0103] In this embodiment, the light source device is applied to a medical endoscope system. Based on the advantages of the light source device in terms of light uniformity and light transmission efficiency, the imaging quality corresponding to the obtained image is improved under the lighting environment provided by the light source device.

[0104] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A light source device, characterized in that: The device comprises: light source; A light source transmission module, one end of which is an input end and the other end is an output end, the input end is connected to the light source correspondingly, the light emitted by the light source is transmitted to the light source transmission module through the input end, and is output through the output end; Wherein, the light source transmission module includes a plurality of branch optical fiber bundles, one end of each of the plurality of branch optical fiber bundles is formed at a target end, and the target end includes any one of the input end and the output end; the plurality of branch optical fiber bundles are partially wound away from the target end to be formed at the other end, and the other end includes the other of the input end and the output end except the target end; wherein the plurality of branch optical fiber bundles are wound according to preset parameters, and the preset parameters include winding radius, winding mode, and tightness; The light emitted by the light source is transmitted to each branch optical fiber bundle through the input end, and is output through the output end.

2. The device according to claim 1, characterized in that The target ends of the multiple branch optical fiber bundles are all input ends, and the other ends of the multiple branch optical fiber bundles are all output ends. The multiple branch optical fiber bundles are wound around the parts close to the output ends to form a total output end; the light sources include multiple light sources, each of which corresponds to each input end, and the light emitted by the multiple light sources is transmitted to the corresponding branch optical fiber bundles through the corresponding input ends, and output through the total output end.

3. The device according to claim 1, characterized in that The target ends of the multiple branch optical fiber bundles are all output ends, the other ends of the multiple branch optical fiber bundles are all input ends, and the multiple branch optical fiber bundles are wound around the parts close to the input ends to form a total input end; the light emitted by the light source is transmitted to the corresponding branch optical fiber bundles through the total input end, and is output through the multiple output ends.

4. The device according to any one of claims 1 to 3, characterized in that Each branch optical fiber bundle includes a plurality of optical fibers, one end of each of the plurality of optical fibers is formed at the target end; parts of the plurality of optical fibers away from the target end are wound and arranged to form at the other end; The light emitted by the light source is transmitted to the plurality of optical fibers through the input end, and is output through the output end.

5. The device according to claim 4, characterized in that A plurality of optical fibers corresponding to each branch optical fiber bundle are arranged at equal intervals at the input end and / or the output end.

6. The device according to claim 5, characterized in that A plurality of optical fibers corresponding to each branch optical fiber bundle are arranged in a matrix at the input end and / or the output end according to a preset interval.

7. The device according to any one of claims 1 to 3, characterized in that: The light surface shape of the light source is adapted to the sectional shape of the corresponding branch optical fiber bundle.

8. The device according to claim 7, characterized in that When the light surface size of the light source is equal to the sectional size of the corresponding branch optical fiber bundle, the coupling efficiency between the light source and the branch optical fiber bundle increases as the numerical aperture of the branch optical fiber bundle increases.

9. A medical endoscope system, characterized in that: Comprising an endoscope body and a light source device according to any one of claims 1 to 8; The endoscope body is connected to the output end of the light source device, and the light output by the light source is transmitted to the endoscope body through the output end of the light source device, and is output through the front end of the endoscope body and irradiated to the object to be observed.

10. The system according to claim 9, characterized in that The system also includes a camera device and a display device; The camera device is disposed at the front end of the endoscope body and connected to the display device. Under the lighting environment provided by the light source device, the camera device obtains an image of the object to be observed and transmits the image to the display device for display.

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