Endoscope illumination assembly and endoscope system

Abstract

The utility model provides an endoscope illumination assembly and endoscope system. Endoscope illumination assembly includes light source and light combiner, light ray of light source is via light combiner and is incident to the optical fiber channel of endoscope, light source includes red light, amber lamp and green light, light combiner includes at least two light combiners, at least two light combiners are used to combine the red light of red light emission, amber light of amber lamp emission and green light of green light emission as a bundle to be incident to the optical fiber channel. Wherein, in the process from respective corresponding lamp emission to incident to the optical fiber channel, the number of light combiner that amber light passes through is less than the number of light combiner that any one of red light and green light passes through. Effectively ensure the energy intensity and light utilization rate of amber light, reduce the energy consumption of amber light, be more favorable to highlight the deep layer blood vessel form and / or bleeding position in target tissue under amber light illumination mode, improve the illumination effect, imaging accuracy and user's experience of using of endoscope illumination assembly.

Description

Technical Field

[0001] This utility model relates to the field of endoscope technology, specifically to an endoscope illumination component and an endoscope system. Background Technology

[0002] An endoscope is a medical device specifically designed to provide imaging examinations and treatments for cavitary tissues. During the imaging process of an endoscope, a light beam generated by a light source is projected onto the surface of the tissue inside the cavity through the endoscope's fiber optic channel, thereby acquiring an image of the surface of the tissue inside the cavity using the endoscope's imaging device.

[0003] To meet diverse observation needs, the endoscope's light source can emit illumination light with different spectra to form different illumination modes. Specifically, the endoscope's light source can include multiple light-emitting devices, a light-combining component, and a converging component. Each light-emitting device emits illumination light of different wavelengths. These illumination lights can be combined into a beam by the light-combining component and then converged by the converging component before entering the endoscope's fiber optic channel. Thus, when it is necessary to switch illumination modes, simply illuminating the corresponding light-emitting device will generate and emit a beam of light with the corresponding illumination spectrum.

[0004] In order to highlight the morphology of mid-to-deep blood vessels and / or the location of bleeding, the endoscopic light source is equipped with an amber light illumination mode, which specifically involves irradiating the examined cavity with a beam of light centered on the amber wavelength. However, in practical applications, it has been found that existing endoscopic light sources in amber light illumination mode suffer from poor light utilization and high energy consumption. Utility Model Content

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, an endoscope illumination assembly is provided.

[0006] The endoscope illumination assembly includes a light source and a light combining assembly. Light emitted from the light source is incident on the endoscope's fiber optic channel via the light combining assembly. The light source includes a red lamp, an amber lamp, and a green lamp. The light combining assembly includes at least two light combining elements, which combine the red light emitted from the red lamp, the amber light emitted from the amber lamp, and the green light emitted from the green lamp into a single beam for incident on the fiber optic channel. Specifically, during the process from the light emanating from their respective lamps to its incident point on the fiber optic channel, the amber light passes through fewer light combining elements than either the red or green light.

[0007] The endoscopic illumination component of this invention allows red, amber, and green lights to emit light independently. These lights are then combined into a single beam via reflection or transmission through a beam combiner and directed into the fiber optic channel. The amber light passes through fewer beam combiners than either the red or green light, minimizing energy loss and effectively ensuring its energy intensity. Furthermore, since the amber light wavelength lies between green and red, a relatively small portion of it is directed into the fiber optic channel after passing through the beam combiner. This amber light is the core wavelength in the amber illumination mode. Therefore, prioritizing the energy intensity and light utilization of the amber light is more beneficial for highlighting the morphology of deep blood vessels and / or the location of bleeding in the target tissue under amber illumination mode, compared to ensuring the energy intensity of green or red light. This improves the illumination effect, imaging accuracy, and user experience of the endoscopic illumination component.

[0008] For example, the light source also includes a blue lamp, and at least two light combiners are used to combine the red light emitted from the red lamp, the amber light emitted from the amber lamp, the green light emitted from the green lamp, and the blue light emitted from the blue lamp into a single beam for incident into the fiber optic channel. Specifically, during the process from the emission of the respective lamp to its incident point into the fiber optic channel, the green light passes through fewer light combiners than either the red or blue light.

[0009] For example, green light is broadband light.

[0010] For example, the light source also includes a blue-violet lamp, and at least two light combiners are used to combine the red light emitted from the red lamp, the amber light emitted from the amber lamp, the green light emitted from the green lamp, the blue light emitted from the blue lamp, and the blue-violet light emitted from the blue-violet lamp into a single beam for incident on the fiber optic channel. The number of light combiners that the blue-violet light passes through during its journey from its respective lamp to its incident on the fiber optic channel does not exceed the number of light combiners that the amber light passes through.

[0011] For example, at least two light combining elements include a first light combining element and a second light combining element. After the red light and green light are combined by the second light combining element, they are combined with the amber light by the first light combining element.

[0012] The first optical combiner has the following optical characteristics:

[0013] It reflects light within the target wavelength range and transmits light outside the target wavelength range;

[0014] Alternatively, it can transmit light within the target wavelength range and reflect light outside the target wavelength range;

[0015] The two endpoints of the target wavelength range are determined based on the first boundary point and the second boundary point. The first boundary point is the boundary between the spectral distribution of amber light and the spectral distribution of green light, and the second boundary point is the boundary between the spectral distribution of amber light and the spectral distribution of red light.

[0016] For example, the target band range is located within the band range defined by the first boundary point and the second boundary point.

[0017] For example, a first light-combining element has a first light-combining film formed on its side near the optical fiber channel, and an amber lamp is disposed corresponding to the first light-combining film. The first light-combining film has the optical properties of reflecting light within the target wavelength range and transmitting light outside the target wavelength range.

[0018] For example, at least two optical combiners are spaced apart along the optical axis of the optical fiber channel.

[0019] For example, the red light is positioned on the optical axis of the fiber optic channel.

[0020] According to another aspect of the present invention, an endoscope system is also provided, including the endoscope illumination assembly as described above.

[0021] The endoscope system of this invention includes the endoscope illumination component as described above. Since the endoscope illumination component has the beneficial effects described above, the endoscope system including the endoscope illumination component as described above will necessarily have the beneficial effects described above as well.

[0022] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0023] The above and other objects, features, and advantages of this utility model will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this utility model and form part of the specification. They are used together with the embodiments of this utility model to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0024] Figure 1 A schematic diagram of the structure of an endoscope illumination assembly according to an exemplary embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram of the structure of an endoscope illumination assembly according to another exemplary embodiment of the present invention is shown;

[0026] Figure 3 A schematic diagram of the structure of an endoscope illumination assembly according to yet another exemplary embodiment of the present invention is shown;

[0027] Figure 4 A schematic diagram of the structure of an endoscope illumination assembly according to another exemplary embodiment of the present invention is shown;

[0028] Figure 5 A schematic diagram of the spectra of blue light, green light, amber light and red light according to an exemplary embodiment of the present invention is shown;

[0029] Figure 6 A schematic block diagram of an endoscope system according to an exemplary embodiment of the present invention is shown.

[0030] The components indicated by the reference numerals in the figures are as follows:

[0031] 1. Light source; 11. Red light; 12. Amber light; 13. Green light; 14. Blue light; 15. Blue-violet light; 2. Light combining component; 21. First light combining element; 211. First light combining film; 22. Second light combining element; 23. Third light combining element; 24. Fourth light combining element; 3. Endoscope; 31. Fiber optic channel; 32. Light receiving port; 4. Collimating lens; 5. Converging lens; 6. Main unit; 7. Display screen. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model more apparent, exemplary embodiments according to this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments of this utility model. It should be understood that this utility model is not limited to the exemplary embodiments described herein. Based on the embodiments of this utility model described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this utility model.

[0033] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0034] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0035] One embodiment of this utility model provides an endoscope illumination component that, when in amber light illumination mode, effectively ensures the light utilization rate of amber light and reduces its energy consumption. The following will describe in detail an endoscope illumination component according to an embodiment of this utility model with reference to the accompanying drawings.

[0036] like Figures 1 to 3 As shown, the endoscope illumination assembly includes a light source 1 and a light combining assembly 2. The light emitted from the light source 1 is incident on the optical fiber channel 31 of the endoscope 3 via the light combining assembly 2. The light source 1 includes a red lamp 11, an amber lamp 12, and a green lamp 13. The light combining assembly 2 includes at least two light combining elements, which combine the red light emitted from the red lamp 11, the amber light emitted from the amber lamp 12, and the green light emitted from the green lamp 13 into a single beam for incident on the optical fiber channel 31. Specifically, during the process from the light emanating from their respective lamps to its incident point on the optical fiber channel 31, the amber light passes through fewer light combining elements than either the red light or the green light.

[0037] The aforementioned red, amber, and green lights can each have their corresponding wavelengths. The light emitted by one or at least two of the multiple lights can be combined by the light combining component 2 to form light for illuminating the target tissue, thereby allowing the endoscope 3 to be in different illumination modes. The aforementioned red light 11, amber light 12, and green light 13 can specifically be any one or more of LED lights, LD lights, xenon lights, etc.

[0038] In existing endoscope illumination assemblies, multiple light sources 1 are typically arranged sequentially from the closest to the fiber optic channel 31 to the furthest from the fiber optic channel 31, according to the wavelength of the emitted light, in order to reduce the design and manufacturing complexity of the light combining components in the light combining assembly 2. However, the amber light emitted by the amber lamp 12 is located in the wavelength range between red and green light. Therefore, the amber light needs to pass through multiple light combining components during its path to the fiber optic channel 31. When the light passes through these components, it loses some energy due to reflection, refraction, or absorption. The more light combining components the light passes through, the greater the energy loss. Therefore, arranging the light sources 1 in the above manner can easily lead to a low utilization rate of the light emitted by the amber lamp 12, forcing the amber lamp 12 to increase its energy consumption to achieve a more ideal illumination effect.

[0039] When two beams of light shine onto a beam combiner, the two beams can be reflected or transmitted through the beam combiner and combined into one beam. Specifically, for example... Figures 1 to 4As shown, the shape of the light combiner can be plate-shaped, and the plate-shaped light combiner can be tilted at 45° along the optical axis to facilitate the reflection or transmission of red, amber, and green light. This application does not limit the specific positions of the red lamp 11, amber lamp 12, green lamp 13, and each light combiner, as long as the number of light combiners passing through the amber light is less than the number of light combiners passing through the red and green light. In this way, the amber light can pass through fewer light combiners compared to either red or green light, thereby effectively reducing the energy loss of the amber light.

[0040] For example, the number of light-combining components can be two, such as Figure 1 As shown, the first light combiner and the amber lamp 12 can be set on the optical axis, while the second light combiner, the green lamp 13 and the red lamp 11 can be set on the side of the optical axis. The green lamp 13 and the red lamp 11 are respectively set on both sides of the second light combiner. The green light and the red light can be reflected by the first light combiner after being combined by the second light combiner, and then combined with the amber light transmitted through the first light combiner.

[0041] Or, such as Figure 2 As shown, there can be three light combining elements. The first light combining element and the amber lamp 12 can be set on the optical axis. The second and third light combining elements can be arranged alternately on the side of the optical axis. The green lamp 13 and the red lamp 11 can be set on the sides of the second and third light combining elements respectively. In this way, the green light reflected by the second light combining element and transmitted through the third light combining element, and the red light reflected by the third light combining element and transmitted through the second light combining element, can be reflected by the first light combining element after beam combining, and then combined with the amber light transmitted through the first light combining element.

[0042] Or, as Figure 3 or Figure 4 In addition to the red light 11, the amber light 12 and the green light 13, the endoscope illumination assembly may also include other lights. Accordingly, the light combining assembly 2 may include multiple light combining elements.

[0043] Among them, such as Figure 4 As shown, each light combining component in the light combining assembly 2 can be arranged at intervals along the optical axis of the optical fiber channel 31. This optimizes the arrangement and layout of the light source 1 and the light combining assembly 2 in the endoscope illumination assembly, reduces the size of the endoscope illumination assembly in the direction perpendicular to the optical axis, and facilitates the miniaturization of the endoscope illumination assembly.

[0044] Specifically, the red light emitted from the red lamp 11 can be transmitted through the third light combiner 23 and the second light combiner 22, and the green light emitted from the green lamp 13 can be reflected by the second light combiner 22, thus combining into a single beam. This beam can then be transmitted through the first light combiner 21, and together with the amber light emitted from the amber lamp 12 and reflected by the first light combiner 21, form another beam, which is then directed into the fiber optic channel 31 (the first light combiner 21, the second light combiner 22, and the third light combiner 23 will be described in detail below, please refer to the following text). In this embodiment, placing the red lamp 11 on the optical axis of the fiber optic channel 31 keeps it away from other lamps, preventing the wavelength of the red light from shifting due to the heat generated by other lamps, thereby avoiding poor or distorted illumination of the endoscope illumination assembly.

[0045] The endoscopic illumination component of this invention allows red light 11, amber light 12, and green light 13 to emit light outwards, which is then combined into a single beam via reflection or transmission through a beam combiner and incident on the fiber optic channel 31. The amber light passes through fewer beam combiners than either red or green light, reducing energy loss and effectively ensuring its energy intensity. Furthermore, since the amber light wavelength lies between green and red, a relatively small portion of it is incident on the fiber optic channel 3 after passing through the beam combiner 2, and is the core wavelength in the amber light illumination mode. Therefore, ensuring the energy intensity and light utilization rate of the amber light is more beneficial for highlighting the morphology of deep blood vessels and / or the location of bleeding in the target tissue under amber light illumination mode, compared to ensuring the energy intensity of green or red light. This improves the illumination effect, imaging accuracy, and user experience of the endoscopic illumination component.

[0046] In some embodiments, such as Figure 3 As shown in Figure 4, the light source 1 also includes a blue lamp 14, and at least two light combiners are used to combine the red light emitted from the red lamp 11, the amber light emitted from the amber lamp 12, the green light emitted from the green lamp 13, and the blue light emitted from the blue lamp 14 into a single beam for incident on the fiber optic channel 31. Specifically, during the process from the light emanating from their respective lamps to its incident on the fiber optic channel 31, the green light passes through fewer light combiners than either the red or blue light.

[0047] For example, such as Figure 4As shown, the light combining component 2 may include a first light combining element 21, a second light combining element 22, and a third light combining element 23. The first light combining element 21, the second light combining element 22, and the third light combining element 23 may be spaced apart on the optical axis of the fiber optic channel 31. An amber lamp 12 may be positioned beside the optical axis corresponding to the first light combining element 21, a green lamp 13 may be positioned beside the optical axis corresponding to the second light combining element 22, a blue lamp 14 may be positioned beside the optical axis corresponding to the third light combining element 23, and a red lamp 11 may be positioned on the optical axis. The red light transmitted through the third light combining element 23 and the blue light reflected by the third light combining element 23 are combined, then transmitted through the second light combining element 22, and combined with the green light reflected by the second light combining element 22, and further combined with the amber light reflected by the first light combining element 21. Thus, the number of light combining elements through which red and blue light pass is greater than the number of light combining elements through which green light passes, which in turn is greater than the number of light combining elements through which amber light passes.

[0048] Understandably, when light source 1 includes red light 11, amber light 12, green light 13, and blue light 14, the endoscopic illumination assembly can provide a white light illumination mode. Specifically, in white light illumination mode, amber light 12, green light 13, blue light 14, and red light 11 can be lit simultaneously according to a preset ratio (or green light 13, blue light 14, and red light 11 can be lit simultaneously), so that amber light, green light, blue light, and red light (or green light, blue light, and red light) can be combined to form white light. Based on this white light, the color rendering characteristics of the target tissue under natural lighting can be restored, and the true color of the target tissue can be restored. Therefore, white light illumination mode is a commonly used illumination mode in endoscopic examinations. Since the eye is more sensitive to green light, and the green light component in white light has a greater impact on its color rendering index, this embodiment makes the number of light combining elements that green light passes through less than the number of light combining elements that red light or blue light passes through. This can make the energy loss of green light relatively small, thereby enabling the endoscope illumination component to obtain better illumination effect in white light illumination mode.

[0049] In the above embodiments, the endoscope illumination component can switch between amber light illumination mode and white light illumination mode. In white light illumination mode, amber, green, blue, and red light (or green, blue, and red light) can be combined to form white light, thus effectively improving the practicality and flexibility of the endoscope illumination component. Furthermore, the number of light combining elements that green light passes through is less than the number of light combining elements that either red or blue light passes through, thereby ensuring the eye's perception of the formed white light and effectively balancing the illumination effect of the endoscope illumination component in white light illumination mode.

[0050] Furthermore, the green light in the above embodiments can be broadband light (i.e., light with a half-width at half-maximum of 30 nm or greater). By emitting broadband green light, on the one hand, more light can be provided, making the obtained image brighter and clearer; on the other hand, it is easier to obtain white light with an average color rendering index Ra greater than or equal to 90 and to provide richer tissue information in other illumination modes, which helps to improve the illumination effect of the endoscope illumination component in various illumination modes.

[0051] In some embodiments, such as Figure 3 As shown in Figure 4, the light source 1 also includes a blue-violet lamp 15, and at least two light combiners are used to combine the red light emitted from the red lamp 11, the amber light emitted from the amber lamp 12, the green light emitted from the green lamp 13, the blue light emitted from the blue lamp 14, and the blue-violet light emitted from the blue-violet lamp 15 into a single beam for incident on the fiber optic channel 31. The number of light combiners that the blue-violet light passes through during its journey from its respective lamp to its incident on the fiber optic channel 31 does not exceed the number of light combiners that the amber light passes through.

[0052] like Figure 3 As shown in Figure 4, the light combining component 2 may also include a fourth light combining component 24 located downstream of the optical path of the first light combining component 21. The blue-violet lamp 15 may be positioned on the side of the optical axis corresponding to the fourth light combining component 24. After the red light, blue light, green light and amber light are sequentially combined, they can be transmitted through the fourth light combining component 24 and combined with the blue-violet light reflected by the fourth light combining component 24, thus forming a single beam that is incident into the optical fiber channel 31.

[0053] The blue-violet lamp 15 emits blue-violet light with a wavelength shorter than blue light. This blue-violet light can be combined with other colors of light to achieve various illumination modes. For example, in one special illumination mode, the blue-violet lamp 15 and the green lamp 13 can be lit simultaneously. When the blue-violet and green light illuminates the target tissue, it highlights the superficial and intermediate mucosal vessels, allowing the endoscope to accurately screen the target tissue at medium and close range. In another special illumination mode, the blue-violet lamp 15, red lamp 11, green lamp 13, and blue lamp 14 can be lit simultaneously. When the blue-violet, red, green, and blue light illuminates the target tissue, it produces an image with a tone similar to white light and highlights the superficial mucosal vessels, allowing the endoscope to quickly and extensively screen the target tissue at medium and long range.

[0054] In the above embodiments, the inclusion of a blue-violet lamp 15 in the endoscope illumination assembly allows for quick and convenient switching between amber light illumination mode, white light illumination mode, and various illumination modes including blue-violet light, effectively improving the practicality and flexibility of the endoscope illumination assembly. Since blue-violet light has a shorter wavelength and typically lower brightness, it is prone to loss during transmission, and this loss is relatively high. Therefore, in the above embodiments, the number of light combining elements that blue-violet light passes through does not exceed the number of light combining elements that amber light passes through. This minimizes the transmission loss of blue-violet light, ensuring its illumination intensity and thus guaranteeing the illumination effect of the endoscope illumination assembly in various illumination modes including blue-violet light.

[0055] Therefore, the above embodiments, by taking into account the lighting requirements of each lighting mode and the light output characteristics of each lamp, and by rationally arranging the placement of each lamp, can minimize the power consumption of each lamp while taking into account the lighting effect of each lighting mode.

[0056] In some embodiments, such as Figures 1 to 4 As shown, the endoscope illumination assembly may also include multiple collimating lenses 4, which can be respectively disposed between each lamp and its corresponding beam combiner. For example, as Figure 3 As shown in Figure 4, a corresponding collimating lens 4 is provided between the blue-violet lamp 15 and the fourth light combining element 24, between the amber lamp 12 and the first light combining element 21, between the green lamp 13 and the second light combining element 22, between the blue lamp 14 and the third light combining element 23, and between the red lamp 11 and the third light combining element 23.

[0057] The aforementioned blue-violet lamp 15, amber lamp 12, green lamp 13, blue lamp 14 and red lamp 11 can emit divergent light outwards, while the collimating lens 4 can convert the divergent light into parallel light.

[0058] In the above embodiment, the collimating lens 4 can bring as much light emitted by the blue-violet lamp 15, amber lamp 12, green lamp 13, blue lamp 14 and red lamp 11 into the optical path as possible, effectively ensuring the light intensity of the light source 1, and thus ensuring the illumination effect of the endoscope illumination assembly.

[0059] In some embodiments, the collimating lens 4 includes multiple lenses (not shown in the figure), which are sequentially connected or spaced apart.

[0060] For example, multiple lenses can be provided between the amber lamp 12 and the first light combining member 21. Each of the multiple lenses can convert the diverging light into parallel light, thereby further converging as much light emitted by the amber lamp 12 into the light path as possible.

[0061] The aforementioned lenses can be spliced ​​together or spaced apart to meet different usage requirements and conditions of the endoscope illumination assembly.

[0062] In the above embodiments, multiple lenses can further convert divergent light into parallel light, thereby facilitating the adjustment of the propagation direction of each light and bringing as much light emitted by the light source 1 into the optical path as possible, thereby further ensuring the illumination intensity of the light source 1 and the illumination effect of the endoscope illumination assembly.

[0063] In some embodiments, such as Figures 1 to 4 As shown, the endoscope illumination assembly may also include a light combiner (e.g., located in the fiber optic channel 31 and closest to the fiber optic channel 31) disposed therein. Figure 4 The converging lens 5 between the fourth light combiner 24) is used to converge the light beam emitted from the light combiner (any or more of blue-violet light, amber light, green light, blue light and red light) into the fiber optic channel 31.

[0064] The aforementioned converging lens 5 can focus parallel light rays onto a local area. Blue-violet light, amber light, green light, blue light and / or red light can be combined by the light combining component and then irradiated onto the converging lens 5, and then converged into the optical fiber channel 31 by the converging lens 5.

[0065] In the above embodiment, the converging lens 5 can converge the beam of light emitted from the light combining component (any or more of blue-violet light, amber light, green light, blue light and red light) into the optical fiber channel 31, avoiding light dispersion and intensity reduction before entering the optical fiber channel 31, and further ensuring the intensity of the light entering the optical fiber channel 31 and the illumination effect of the endoscope illumination component.

[0066] In some embodiments, such as Figures 1 to 4 As shown, the fiber optic channel 31 may have a receiving port 32, the diameter of which may be smaller than the diameter of the converging lens 5.

[0067] The aforementioned light receiving port 32 can be formed at one end of the optical fiber channel 31 near the converging lens 5.

[0068] In the above embodiments, the converging lens 5 can more effectively focus light into the receiving port 32 of the optical fiber channel 31, reducing the leakage of light out of the optical fiber channel 31 and effectively improving the efficiency of optical coupling. Furthermore, the receiving port 32 of the optical fiber channel 31 has a small aperture, which is adapted to the converging effect of the converging lens 5; that is, the size of the receiving port 32 is comparable to the size of the light spot formed by the converging effect. This reduces light scattering and loss during the coupling process, thereby improving the light transmission effect and efficiency.

[0069] In some embodiments, such as Figures 1 to 4As shown, at least two light combining elements include a first light combining element 21 and a second light combining element 22. After the red light and green light are combined by the second light combining element 22, they are combined with the amber light by the first light combining element 21.

[0070] The first optical combining element 21 has the following optical characteristics:

[0071] It reflects light within the target wavelength range and transmits light outside the target wavelength range;

[0072] Alternatively, it can transmit light within the target wavelength range and reflect light outside the target wavelength range.

[0073] The two endpoints of the target wavelength range are determined based on the first boundary point and the second boundary point. The first boundary point is the boundary between the spectral distribution of amber light and the spectral distribution of green light, and the second boundary point is the boundary between the spectral distribution of amber light and the spectral distribution of red light.

[0074] like Figure 5 As shown in the diagram, the blue solid line represents the spectrum of blue light, the green solid line represents the spectrum of green light, the yellow solid line represents the spectrum of amber light, and the red solid line represents the spectrum of red light. The intersection point between the green and amber light spectra can be identified as the first boundary point, and the intersection point between the red and amber light spectra can be identified as the second boundary point. The target wavelength range can be determined by using the first and second boundary points.

[0075] The first light combiner 21 can be designed with a film system according to the aforementioned target wavelength range, allowing it to reflect or transmit light of different wavelengths depending on the target wavelength range. Specifically, when amber light, red light, and green light illuminate the first light combiner 21, it can reflect a portion of the amber light within the target wavelength range and transmit the red light, green light, and amber light outside the target wavelength range. Alternatively, it can transmit a portion of the amber light within the target wavelength range and reflect the red light, green light, and amber light outside the target wavelength range.

[0076] like Figure 5As shown, the spectrum of amber light overlaps significantly with the spectra of green and red light. The first light combiner 21 is configured such that the portion of the amber light within the target wavelength range can be incident on the fiber optic channel 3 via the first light combiner 21, and that the portions of the green and red light outside the target wavelength range can also be incident on the fiber optic channel 3 via the first light combiner 21. The two endpoints of this target wavelength range are determined based on a first boundary point and a second boundary point, i.e., they are obtained by floating and adjusting towards the shortwave or longwave side with the first and second boundary points as a reference. Therefore, it is possible to... This design ensures that most of the light in the amber, green, and red light wavelength range near their respective peak wavelengths (especially the light in the amber light range near its peak wavelength) is incident on the fiber optic channel 3. For each illumination mode, the light in the wavelength range near its peak wavelength is typically the core component affecting its illumination effect. Therefore, this embodiment allows light in the wavelength range near its peak wavelength in each light beam to be incident on the fiber optic channel, which helps balance the illumination effects of different illumination modes (e.g., white light illumination mode and amber light illumination mode), ensuring good illumination for each mode. Furthermore, the light in the wavelength range near its peak wavelength in each light beam typically has a higher proportion of optical power in its spectral distribution; allowing this portion of light to be incident on the fiber optic channel 3 also improves the light utilization rate of each light-emitting element.

[0077] In some embodiments, the target band range is located within the band range defined by the first boundary point and the second boundary point.

[0078] The two endpoints of the target wavelength range can correspond to the first boundary point and the second boundary point respectively, or they can be located between the first boundary point and the second boundary point. For example, the first boundary point can be Anm (nanometer), and the second boundary point can be Bnm (nanometer). If the target wavelength range is [anm, bnm], then anm ≥ Anm, bnm ≤ Bnm.

[0079] In the above embodiments, since green light has a significant impact on the color rendering and luminous flux of the beam after beam combining, it is not advisable to excessively truncate it. Therefore, the short-wavelength end point a of the target wavelength range can be selected from the first boundary point A, gradually approaching the peak wavelength of amber light, using the illumination effect of each relevant illumination mode as a constraint. Red light is typically narrowband light, and its spectral distribution overlaps considerably with that of amber light. To avoid significant loss of red light, the long-wavelength end point b of the target wavelength range can be selected from the second boundary point B, gradually approaching the peak wavelength of amber light, using the illumination effect of each relevant illumination mode as a constraint. This makes it easier to balance the imaging wavelength requirements among amber, green, and red light, ensuring good illumination effects for all illumination modes including these lights.

[0080] In some embodiments, such as Figure 4As shown, the first light combiner 21 has a first light combining film 211 formed on its side near the optical fiber channel 31, and the amber lamp 12 is disposed corresponding to the first light combining film 211. The first light combining film 211 has the optical properties of reflecting light within the target wavelength range and transmitting light outside the target wavelength range.

[0081] In the above embodiment, the first light combining film 211 can be formed on the side of the first light combining member 21 close to the optical fiber channel 31. In this way, amber light in the target wavelength range can be directly reflected by the first light combining film 211 on the first light combining member 21 without refraction inside the first light combining film, which further reduces the light loss of amber light that can be incident on the optical fiber channel 31 and further improves the illumination effect of the endoscope illumination assembly.

[0082] According to another aspect of this utility model, an endoscope system is also provided, including the endoscope illumination assembly as described above. The endoscope illumination assembly can be disposed within the endoscope or outside the endoscope, for example, in an endoscope light source device or an integrated endoscope unit connected to the endoscope. The following description uses the example of the endoscope illumination assembly being disposed within an endoscope light source device.

[0083] like Figure 6 As shown, the endoscope system may further include an endoscope 3, a main unit 6, and a display screen 7, with the endoscope 3, display screen 7, and light source 1 respectively communicating with the main unit 6. Specifically, the components in the endoscope system can be connected via wired or wireless means, and this application does not impose any specific limitations on this.

[0084] The light emitted by the aforementioned endoscope illumination assembly enters the fiber optic channel 3 of the endoscope 6 and can then illuminate the target tissue from the front end of the endoscope 6. The light returning from the target tissue can be captured by the camera of the endoscope 6 and converted into an image signal, which is then transmitted to the host 4. The host 4 can process the received image signal and transmit it to the display screen 5 for image display.

[0085] The endoscope system of this invention includes the endoscope illumination component as described above. Since the endoscope illumination component has the beneficial effects described above, the endoscope system including the endoscope illumination component as described above will necessarily have the beneficial effects described above as well.

[0086] Although exemplary embodiments have been described herein with reference to the accompanying drawings, it should be understood that these exemplary embodiments are merely illustrative and are not intended to limit the scope of the invention. Various changes and modifications can be made therein by those skilled in the art without departing from the scope and spirit of the invention. All such changes and modifications are intended to be included within the scope of the invention as claimed in the appended claims.

[0087] For ease of description, the term "connection" may be used herein to describe the relationship between one or more elements or features shown in the figure and other elements or features. It should be understood that "connection" may include direct connections or indirect connections via other elements or features, and this document is intended to encompass all such cases.

[0088] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0089] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0090] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An endoscope illumination assembly, comprising a light source and a light combining assembly, wherein light emitted from the light source is incident on the optical fiber channel of the endoscope via the light combining assembly, characterized in that, The light source includes a red light, an amber light, and a green light. The light combining component includes at least two light combining elements, which are used to combine the red light emitted by the red light, the amber light emitted by the amber light, and the green light emitted by the green light into a single beam for incident into the optical fiber channel. In the process of light emanating from its respective lamp and being incident on the optical fiber channel, the number of light combining elements that the amber light passes through is less than the number of light combining elements that either the red light or the green light passes through.

2. The endoscope illumination assembly according to claim 1, characterized in that, The light source also includes a blue lamp, and the at least two light combiners are used to combine the red light emitted by the red lamp, the amber light emitted by the amber lamp, the green light emitted by the green lamp, and the blue light emitted by the blue lamp into a single beam for incident into the optical fiber channel. In the process of light emanating from its respective lamp and entering the optical fiber channel, the number of light combining elements that the green light passes through is less than the number of light combining elements that either the red light or the blue light passes through.

3. The endoscope illumination assembly according to claim 2, characterized in that, The green light is broadband light.

4. The endoscope illumination assembly according to claim 2, characterized in that, The light source also includes a blue-violet lamp, and the at least two light combiners are used to combine the red light emitted by the red lamp, the amber light emitted by the amber lamp, the green light emitted by the green lamp, the blue light emitted by the blue lamp, and the blue-violet light emitted by the blue-violet lamp into a single beam for incident on the optical fiber channel. In the process of light emanating from its respective lamp and entering the optical fiber channel, the number of light combining elements through which the blue-violet light passes does not exceed the number of light combining elements through which the amber light passes.

5. The endoscope illumination assembly according to claim 1, characterized in that, The at least two light combining elements include a first light combining element and a second light combining element. The red light and the green light are combined by the second light combining element and then combined with the amber light by the first light combining element. The first light combiner has the following optical characteristics: It reflects light within the target wavelength range and transmits light outside the target wavelength range; or, It transmits light within the target wavelength range and reflects light outside the target wavelength range; The two endpoints of the target wavelength range are determined based on a first boundary point and a second boundary point. The first boundary point is the boundary between the spectral distribution of amber light and the spectral distribution of green light, and the second boundary point is the boundary between the spectral distribution of amber light and the spectral distribution of red light.

6. The endoscope illumination assembly according to claim 5, characterized in that, The target band range is located within the band range defined by the first boundary point and the second boundary point.

7. The endoscope illumination assembly according to claim 5, characterized in that, The first light combining element has a first light combining film formed on the side near the optical fiber channel, and the amber lamp is disposed corresponding to the first light combining film; The first light-combining film has the optical properties of reflecting light within the target wavelength range and transmitting light outside the target wavelength range.

8. The endoscope illumination assembly according to any one of claims 1 to 4, 7, characterized in that, The at least two light combining elements are spaced apart along the optical axis of the optical fiber channel.

9. The endoscope illumination assembly according to claim 8, characterized in that, The red light is positioned on the optical axis of the optical fiber channel.

10. An endoscope system, characterized in that, Includes the endoscope illumination assembly as described in any one of claims 1 to 9.

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