Light source light guide seat, endoscope light source and medical system

Abstract

The embodiment of the utility model provides a light source light guide seat which is used for being connected with a light guide plug of an endoscope in a matched mode, the light guide plug is provided with a light guide rod, the light source light guide seat comprises a light guide interface assembly, a fixing frame and a heat dissipation assembly, and a first light guide hole is formed in the light guide interface assembly; the heat dissipation assembly is connected to the fixing frame in the axial direction of the first light guide hole and can move relative to the fixing frame in a lateral plane perpendicular to the axial direction, the heat dissipation assembly comprises a second light guide hole extending in the axial direction, and the head end of a light guide rod penetrating through the first light guide hole is inserted into the second light guide hole; and the inner diameter of at least one part of the second light guide hole is matched with the outer diameter of the part, inserted into the at least one part, of the head end part. In the process of inserting the light guide rod, the radial position of the heat dissipation assembly is self-adaptively adjusted under the acting force of the light guide rod, so that close contact between the second light guide hole and the light guide rod becomes possible, the heat dissipation efficiency is improved, and the problem that the temperature of the tail end of the light guide rod is too high is solved.

Description

Technical Field

[0001] This application relates to the field of medical endoscopy, specifically to a light source guide base, an endoscope light source having the light source guide base, and a medical system having the endoscope light source. Background Technology

[0002] Currently, most endoscopic systems use a rear-mounted light source. In practical use, considering the compatibility between the light source and the endoscope, as well as the cleaning and disinfection procedures of the endoscope, the endoscope and the light source are separate units, and the endoscope and the light source are detachably connected. The illumination light emitted by the light source can be transmitted to an optical fiber inside the endoscope, and then conducted to the distal end of the endoscope to provide illumination. The proximal end of the optical fiber in the endoscope is fixed with a protective sleeve to form a rigid light guide, making it easy to insert the light guide into the light guide hole of the light source when connecting the endoscope and the light source.

[0003] Light source devices typically also include a converging mirror assembly, used to convert the diverging beam emitted by the light source into a highly focused beam and guide it to the front end of the light guide rod for coupling into the optical fiber. However, due to manufacturing tolerances and other reasons, the highly focused beam may not couple efficiently with the light guide rod, resulting in some unused beam being converted into heat, causing the front end of the light guide rod to heat up rapidly. To prevent burns to operators after the light guide rod is removed from the light source device, a heat dissipation component is usually installed inside the light source device base to cool the light guide rod.

[0004] To efficiently utilize the illumination light generated by the light source and improve the coupling efficiency of the highly focused beam acting on the light guide rod, a precise fit between the light guide hole and the light guide rod is required to ensure the coaxiality of the optical fiber and the converging lens assembly within the light guide rod. Currently, due to limitations in manufacturing precision, commercially available light source devices typically have tapered holes on their heat dissipation components. When the light guide rod is in place, only the end face of the light guide rod contacts the wall of the tapered hole for heat dissipation. This results in the side surface of the light guide rod not contacting the inner wall of the tapered hole in the heat dissipation component, severely impacting the heat dissipation performance of the light source device. Utility Model Content

[0005] To at least partially address the problems existing in the prior art, embodiments of this application provide a light source light guide base for adapting and connecting with a light guide plug of an endoscope. The light guide plug has a light guide rod. The light source light guide base includes: a light guide interface assembly with a first light guide hole; a fixing frame; and a heat dissipation assembly. The heat dissipation assembly is connected to the fixing frame along the axial direction of the first light guide hole and is movable relative to the fixing frame in a lateral plane perpendicular to the axial direction. The heat dissipation assembly includes a second light guide hole extending along the axial direction for inserting the head end of the light guide rod that passes through the first light guide hole. The inner diameter of at least a portion of the second light guide hole is adapted to the outer diameter of the portion of the head end that is inserted into the at least a portion.

[0006] For example, at least a portion of the length of the second light guide hole is not less than half of the minimum inner diameter of the second light guide hole.

[0007] For example, at least a portion of the second light guide hole is constructed as a straight hole, and the length of the straight hole in the axial direction is not less than half of its inner diameter.

[0008] For example, one of the mounting bracket and the heat dissipation assembly is provided with a limiting hole parallel to the axial direction, and the other of the mounting bracket and the heat dissipation assembly is provided with a limiting member. The limiting member is installed in the limiting hole, and a gap is provided between the side of the limiting member and the hole wall of the limiting hole. The gap allows the heat dissipation assembly to move relative to the mounting bracket in the lateral plane.

[0009] For example, the light guide seat of the light source also includes an axial elastic element, which is disposed between the fixing frame and the heat dissipation assembly, and is used to apply an axial elastic force to the heat dissipation assembly in the axial direction so that the heat dissipation assembly abuts against the fixing frame.

[0010] For example, the heat dissipation assembly includes a first heat sink, the first heat sink including: a guide member, a second light guide hole disposed on the guide member; and a first heat sink plate, the first heat sink plate being fixed to the guide member and thermally conductive with the guide member.

[0011] For example, the guide includes a tube that surrounds and forms a second light guide hole and a flange that protrudes radially from the outer side of the tube. A first heat sink is sleeved on the tube and fits against the outer side of the tube. The first heat sink also fits against the flange.

[0012] For example, the tube has a first end and a second end opposite each other along the axial direction, the first end being closer to the light guide interface assembly than the second end, the distance from the flange to the second end being less than the distance to the first end; the first heat sink is attached to the side of the flange facing the light guide interface assembly.

[0013] For example, a plurality of heat dissipation parts are provided on the surface of the first heat sink, and the projections of the plurality of heat dissipation parts in the lateral plane are arranged in multiple rows, and the projections of the heat dissipation parts in adjacent rows are staggered along a direction parallel to the rows.

[0014] For example, the thermal conductivity of the guide is not lower than that of the first heat sink.

[0015] For example, the heat dissipation assembly includes a first heat sink, a second light guide hole disposed on the first heat sink, and the first heat sink further includes a plurality of heat dissipation fins disposed around the second light guide hole. The projections of the plurality of heat dissipation fins in the lateral plane are parallel to each other. For the plurality of heat dissipation fins, there is a first spacing between the plurality of heat dissipation fins located on both sides of the second light guide hole along a first direction extending from the plurality of heat dissipation fins, and a second spacing between the plurality of heat dissipation fins located on both sides of the second light guide hole along a second direction. The first spacing is greater than the second spacing, and the second direction is perpendicular to the first direction and the axial direction.

[0016] For example, the heat dissipation assembly further includes a second heat dissipation plate, the center of which is provided with a light-transmitting hole coaxial with the second light guide hole, the second heat dissipation plate is fixed along the axial direction to the side of the first heat sink away from the light guide interface assembly, wherein: the second heat dissipation plate is deformable in the axial direction.

[0017] For example, the light guide base of the light source also includes a reset assembly, which is disposed between the fixing frame and the heat dissipation assembly. The reset assembly includes a reset elastic element, which is used to apply a reset elastic force parallel to the lateral plane to the heat dissipation assembly so that the first light guide hole and the second light guide hole are coaxial.

[0018] For example, the reset assembly also includes a retaining plate that is fixed to the retaining frame; one end of the reset elastic member is fixed to the retaining plate, and the other end abuts against the heat dissipation assembly in a direction parallel to the lateral plane.

[0019] For example, the fixing frame has a plurality of first positioning parts arranged in a circumferential direction around the axial direction; the heat dissipation assembly has a plurality of second positioning parts arranged in a circumferential direction, and the plurality of second positioning parts are arranged in a one-to-one correspondence with the plurality of first positioning parts, wherein: there are a plurality of reset elastic elements, each reset elastic element is connected between a set of corresponding first positioning parts and second positioning parts, and each reset elastic element is elastically deformable in a radial direction perpendicular to the axial direction.

[0020] For example, for each set of corresponding first positioning part and second positioning part: one of the first positioning part and the second positioning part has a positioning groove extending in the radial direction, and the other of the first positioning part and the second positioning part has an abutting surface. The groove opening of the positioning groove and the abutting surface are arranged opposite to each other in the radial direction. The reset elastic member corresponding to the set is accommodated in the positioning groove, one end abutting against the bottom of the positioning groove, and the other end extending from the groove opening of the positioning groove and abutting against the abutting surface.

[0021] For example, the reset elastic element includes a helical spring and an abutment, the helical spring being disposed in a positioning groove; the abutment is clamped between the helical spring and the abutment surface in the radial direction.

[0022] For example, the abutment is spherical.

[0023] For example, the groove opening of the positioning groove is provided with a stop member, the stop member including a limiting opening, wherein: a portion of the abutment member of the corresponding reset elastic member protrudes outside the limiting opening and abuts against the abutting surface.

[0024] For example, the light guide base of the light source also includes a converging mirror assembly, which is fixed on the heat dissipation assembly and the optical axis of the converging mirror assembly is coaxial with the second light guide hole. The heat dissipation assembly is located between the converging mirror assembly and the light guide interface assembly.

[0025] For example, the light guide base also includes a converging mirror assembly, the optical axis of which is coaxially arranged with the first light guide hole, a heat dissipation assembly is located between the converging mirror assembly and the light guide interface assembly, and the converging mirror assembly is fixedly connected to the mounting bracket.

[0026] For example, the converging lens assembly includes: a lens group for converging light onto the light incident surface of the light guide rod; a lens barrel, in which the lens group is fixed, and the lens barrel is fixed to a mounting bracket; and a converging mount, which is threadedly connected to the outer side of the lens barrel so that the lens barrel is adjustable in position relative to the converging mount in the axial direction.

[0027] For example, the converging mirror assembly also includes a locking ring, which is sleeved on the mirror barrel and threaded to the mirror barrel, and the locking ring abuts against the converging mounting base.

[0028] Exemplarily, the converging lens assembly includes: a lens group for converging light onto the light incident surface of the light guide rod; a lens barrel in which the lens group is fixed; a converging mounting base on which the lens barrel is sleeved and which is axially movable relative to the converging mounting base; a fixing bracket fixed to the converging mounting base; and a fixing component movably connected to the converging mounting base between a locked position and a released position, wherein: in the locked position, the fixing component locks the lens barrel to the converging mounting base; and in the released position, the lens barrel is axially movable relative to the converging mounting base.

[0029] According to another aspect of this application, an endoscope light source is provided, including any of the light source light guides described above.

[0030] According to another aspect of this application, a medical system is provided, comprising: an endoscope light source as described above; an endoscope having a light guide plug, the light guide plug having a light guide rod, the light guide plug being detachably connected to a light guide base of the light source, and the light guide rod being sequentially inserted into a first light guide hole and a second light guide hole when the light guide plug is connected to the light guide base of the light source.

[0031] During the insertion of the light guide rod, the heat dissipation component adaptively adjusts its radial position under the force of the light guide rod to avoid insertion and removal jamming. Furthermore, because the second light guide hole can adaptively cooperate with the light guide rod, it makes it possible to achieve tight contact between the second light guide hole and the light guide rod, preventing over-positioning that would occur if both the first and second light guide holes were simultaneously tightly fitted to the light guide rod. This tight fit improves heat conduction between the light guide rod and the second light guide hole, thereby enhancing heat dissipation efficiency and solving the problem of excessively high temperatures at the end of the light guide rod.

[0032] This application introduces a series of simplified concepts, which will be further explained in detail in the Detailed Description section. This application does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0033] The advantages and features of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0034] The following drawings, which are incorporated herein by reference and are used to understand this application, illustrate embodiments of the invention and their descriptions to explain the principles of the invention. In the drawings,

[0035] Figure 1 This is a perspective view of a light guide base for a light source according to an exemplary embodiment of this application;

[0036] Figure 2 for Figure 1 The cross-sectional view of the light guide base of the light source shown in the figure;

[0037] Figure 3 for Figure 2 The cross-sectional view of the heat dissipation assembly and mounting base shown in the figure;

[0038] Figure 4 for Figure 1 The image shows a partial perspective view of the light guide base, with the light guide interface assembly omitted.

[0039] Figure 5 for Figure 4 The exploded view of the heat dissipation assembly, mounting base, and reset assembly is shown in the figure.

[0040] Figure 6 for Figure 4 The cross-sectional view of the heat dissipation assembly, mounting base, and converging mirror assembly is shown in the figure;

[0041] Figure 7 An exploded view of a converging mirror assembly according to an exemplary embodiment of this application;

[0042] Figure 8A perspective view of a portion of a light guide base according to another exemplary embodiment of this application;

[0043] Figure 9A for Figure 8 An exploded view of a portion of the light guide base of the light source shown in the image;

[0044] Figure 9B for Figure 8 The cross-sectional view of the light guide base of the light source along the AA direction is shown in the figure;

[0045] Figure 10 for Figure 8 The image shows a cross-sectional view of the light guide mount along the BB direction.

[0046] The above figures include the following reference numerals:

[0047] 110. Light guide rod; 111. Optical fiber; 112. Protective sleeve; 200. Light source light guide base; 210. Light guide interface assembly; 211. First light guide hole; 220. Heat dissipation assembly; 221. Second light guide hole; 222. First heat sink; 2221. Guide component; 2221a. Tube body; 2221b. Flange; 2222. First heat sink; 2222a. Heat dissipation part; 2224. Heat dissipation fins; 2225. Second positioning part; 223. Second heat sink; 223a. Light transmission hole; 224. Limiting hole; 225. Limiting component; 226. Axial elastic component; 230. Reset assembly; 231. Reset elastic component; 23 11. Helical spring; 2312. Abutment; 232. First retaining plate; 233. Second retaining plate; 240. Converging lens assembly; 241. Lens group; 241a. First lens; 241b. Second lens; 242. Lens barrel; 243. Converging mounting base; 2431. Radial threaded hole; 244. Locking ring; 245. Collimation spring; 245a. First collimation spring; 245b. Second collimation spring; 246. Fixing assembly; 250. Fixing bracket; 251. First positioning part; 2511. Positioning groove; 2512. Stop; 2512a. Limiting opening; 300. Cooling fan; 400. Optical engine housing. Detailed Implementation

[0048] In the following description, numerous details are provided to enable a thorough understanding of this application. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the application, and that the application can be implemented without one or more of these details. Furthermore, to avoid confusion with this application, some technical features well-known in the art have not been described in detail.

[0049] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may be available in addition to these detailed descriptions.

[0050] Embodiments of this application provide an endoscope system. The endoscope system may include an endoscope and a light source device, which are separately configured. The light source device generates illumination light, which is transmitted through an optical fiber built into the endoscope to the distal end of the endoscope to provide illumination and assist in image capture. The endoscope is provided with a light guide plug, and the light source device is provided with a light guide base. The light guide plug is detachably connected to the light guide base, thereby facilitating a detachable connection between the endoscope and the light source device. The cooperation of the light guide plug and the light guide base enables not only a mechanical connection between the endoscope and the light source device but also an optical connection between them. Various suitable structures, both existing and potentially future, can be used for the mechanical connection of the light guide plug and the light guide base, which will not be described in further detail herein. To achieve the optical connection, the light guide plug may include a light guide rod, and the light guide base may include a light guide hole. After the light guide plug and the light guide base are mechanically connected, the light guide rod is inserted into the light guide hole. The light guide hole and the converging lens assembly of the light source device have a high degree of coaxiality. Therefore, by guiding the insertion direction of the light guide rod through the light guide hole, the coaxiality requirements of the light guide rod and the converging lens assembly can be met.

[0051] An endoscope typically contains a bundle of optical fibers to guide illumination light from the light guide plug to the distal end of the endoscope. The proximal end of the fiber bundle extends into the light guide plug and is fitted with a protective sleeve to form a rigid light guide rod. Figure 1-2 A light guide 200 according to an exemplary embodiment of the present disclosure is shown. For example... Figure 1-2 As shown, the light guide base 200 may include a light guide interface assembly 210, a heat dissipation assembly 220, and a fixing bracket 250. The light guide interface assembly 210 is mainly used for mechanical adaptation and connection with the light guide plug; for example, the light guide plug can be inserted into the light guide interface assembly 210. Figure 2As shown, the light guide interface assembly 210 is provided with a first light guide hole 211 for guiding the light guide rod 110 on the light guide plug to be inserted along the axial direction of the first light guide hole 211. The first light guide hole 211 shown in the figure has a center line, which, for ease of understanding, is referred to as the center axis PP extending along the axial direction of the first light guide hole 211. After insertion, the outer wall of the light guide rod 110 can fit tightly against the inner wall of the first light guide hole 211 to improve the docking accuracy between the light guide plug and the light guide base 200 of the light source. The light guide rod 110 is a rigid structure and generally includes a protective sleeve 112 and an optical fiber 111 wrapped therein. The light guide base 200 of the light source is usually fixed to the front panel of the light source device (not shown). Typically, after installation, the light guide interface assembly 210 protrudes outside the front panel, while the other parts of the light guide base 200 are located inside the light source device.

[0052] The heat dissipation assembly 220 is typically located inside the light source device. The mounting bracket 250 is fixed in position and can be secured to any suitable component of the light guide base 200. It is understood that the mounting bracket 250 does not obstruct the transmission of illumination light. Exemplarily, the mounting bracket 250 may be annular to allow the light beam to pass through the inner ring of the annulus. As described later, the mounting bracket 250 may define the range of motion of the heat dissipation assembly 220 in a plane perpendicular to the central axis PP. The mounting bracket 250 can limit relative displacement of the heat dissipation assembly 220 along the extension direction of the central axis PP. Alternatively, other components within the light guide base 200 may also limit relative displacement between the mounting bracket 250 and the heat dissipation assembly 220 along the extension direction of the central axis PP. For example, the light guide base 200 may have a groove perpendicular to the central axis PP. The edges of the fixing frame 250 and the heat dissipation assembly 220 can extend into the groove and be held by the side wall of the groove, so that the fixing frame 250 and the heat dissipation assembly 220 will not have relative displacement along the extension direction of the central axis PP. The heat dissipation assembly 220 is provided with a second light guide hole 221 extending along the central axis PP, and the second light guide hole 221 is approximately coaxial with the first light guide hole 211. The second light guide hole 221 is used for the insertion of the head end of the light guide rod 110 that passes through the first light guide hole 211. The inner diameter of at least a portion of the second light guide hole 221 is adapted to the outer diameter of the portion of the head end that is inserted into the at least a portion. After passing through the first light guide hole 211, the light guide rod 110 can be further inserted into the second light guide hole 221, and the outer wall of the inserted light guide rod 110 can fit tightly against the inner wall of the second light guide hole 221. During the insertion of the light guide rod, the heat dissipation component adaptively adjusts its radial position under the force of the light guide rod 110 to avoid insertion / removal jamming. Furthermore, since the second light guide hole 221 can adaptively mate with the light guide rod 110, it makes close contact between the second light guide hole 221 and the light guide rod 110 possible, preventing over-positioning due to the simultaneous tight contact of the first and second light guide holes 221 with the light guide rod 110. This tight contact improves heat conduction between the light guide rod 110 and the second light guide hole 221, thereby increasing heat dissipation efficiency and solving the problem of excessively high temperature at the end of the light guide rod 110.

[0053] Figure 3A schematic diagram of the heat dissipation assembly 220 and the light guide rod 110 is shown. As shown, a limiting hole 224 parallel to the central axis PP can be provided on the heat dissipation assembly 220, and a limiting member 225 can be provided on the fixing bracket 250, with the limiting member 225 installed within the limiting hole 224. A gap is provided between the side of the limiting member 225 and the wall of the limiting hole 224. For example, the outer diameter of the limiting member 225 can be smaller than the inner diameter of the limiting hole 224. This gap allows the heat dissipation assembly 220 to move relative to the fixing frame 250 along a lateral plane perpendicular to the central axis PP. This allows the heat dissipation assembly 220 to move within the aforementioned lateral plane during the insertion of the light guide rod 110 into the second light guide hole 221 and abutting against its inner wall. This accommodates situations where the light guide rod 110 may not be strictly straight due to manufacturing tolerances, or where the first light guide hole 211 and the second light guide hole 221 are not precisely coaxial. Therefore, the light guide rod 110 can be smoothly inserted into the second light guide hole 221 and make full contact with its inner wall after insertion, which facilitates the transfer of heat from the light guide rod 110 to the heat dissipation assembly 220, improving heat dissipation. The size of the gap between the side of the limiting member 225 and the wall of the limiting hole 224 can be determined by the insertion deviation of the light guide rod 110. Specifically, this gap can be greater than the coaxiality deviation value after the light guide rod 110 is inserted into the second light guide hole 221. The insertion deviation may include the cumulative tolerance caused by the machining deviations of the light guide rod 110, the first light guide hole 211 and the second light guide hole 221, the installation deviation of the light source light guide base 200, and the operational deviation of the connection between the light guide plug and the light source light guide base 200. Because the heat dissipation component 220 can move relative to the fixing frame 250 in a lateral plane perpendicular to the central axis PP during the insertion and removal operation of the light guide rod 110 and the second light guide hole 221, forming an adaptive floating heat dissipation structure, it can effectively solve the jamming problem during insertion and removal operations.

[0054] For example, the limiting hole 224 can be either a through hole (as shown in the figure) provided on the heat dissipation assembly 220, or a notch (not shown) provided on the edge of the heat dissipation assembly 220. The notch can be semi-circular, such as half a circle, larger than half a circle, or smaller than half a circle. When used as a limiting hole, it may be necessary to provide multiple notches on the edge of the heat dissipation assembly 220 and use them in conjunction with multiple limiting members to prevent the heat dissipation assembly 220 from separating from the fixing bracket 250.

[0055] For example, in other embodiments not shown, the aforementioned limiting member can be provided on the heat dissipation assembly 220, and the aforementioned limiting hole can be provided on the fixing frame 250. The heat dissipation assembly 220 can still move relative to the fixing frame 250 within the limiting hole gap range on the lateral plane perpendicular to the central axis PP when installed in the aforementioned manner.

[0056] For example, the edge of the second light guide hole 221 near the first light guide hole 211 is chamfered. When the light guide rod 110 is inserted into the second light guide hole 221, if there is any deviation, it first resists the chamfer. As it is gradually inserted into the second light guide hole 221, the heat dissipation component 220 moves, and the light guide rod 110 can smoothly enter the second light guide hole 221 under the guidance of the chamfer. After setting the chamfer, it can be ensured that the light guide rod 110 can be smoothly inserted into the second light guide hole 221, thereby increasing the insertion deviation range that the second light guide hole 221 can accept.

[0057] See also Figure 3-5 In some embodiments, the heat dissipation assembly 220 may include a first heat sink 222, which includes a guide member 2221 and a first heat sink 2222. The first heat sink 2222 is fixed to the guide member 2221 and is thermally conductive with the guide member 2221. A second light guide hole 221 is disposed on the guide member 2221. The first heat sink 2222 is in full contact with and fixed to the guide member 2221. The guide member 2221 is thermally conductive and may be made of a material with a high thermal conductivity. The heat on the light guide rod 110 can be conducted to the guide member 2221 through the contact between its outer wall and the inner wall of the second light guide hole 221, and finally to the first heat sink 2222, thereby increasing the heat dissipation area.

[0058] For example, the thermal conductivity of the guide component can be no less than that of the first heat sink. Due to the structure of the first heat sink, it is usually manufactured using a die-casting process. This limits its material, and its thermal conductivity is usually slightly lower. To improve heat dissipation performance, the guide component can be processed from a material with better thermal conductivity, allowing the guide component to quickly transfer heat to the first heat sink, which then dissipates the heat into the air. The hardness of the guide component can be less than that of the light guide rod, thereby preventing scratches on its surface when the light guide rod is inserted.

[0059] Furthermore, the first heat sink 2222 may have a first surface and a second surface opposite each other along the central axis PP. The guide member 2221 is fixed to the first surface of the first heat sink 2222. The first surface of the first heat sink 2222 is in full contact with the guide member 2221. A plurality of protruding heat dissipation portions 2222a are provided on the second surface of the first heat sink 2222, increasing the contact area between the first heat sink 2222 and the air, and improving heat dissipation performance. In some embodiments, the second light guide hole has a tapered wall structure, with the tapered surface fitting against the surface of the light guide rod 110. Such a fit may result in a small contact area and poor heat dissipation. Exemplarily, at least a portion of the length of the second light guide hole 221 is not less than half the minimum inner diameter of the second light guide hole 221. This ensures that this portion of the second light guide hole 221 has a sufficiently large inner surface area, providing better heat dissipation when in contact with the light guide rod 110.

[0060] For example, at least a portion of the second light guide hole 221 is constructed as a straight hole, the length of which along the axial direction is not less than half of its inner diameter. The light guide rod 110 is adapted to this portion, thereby forming a contact surface surrounding the light guide rod 110. This surface has a sufficiently large area to allow for faster heat conduction and stronger heat dissipation.

[0061] For example, a cooling fan 300 can be provided on the side of the heat dissipation assembly 220, such as... Figure 2 and 4 As shown, the cooling fan 300 can accelerate the airflow through the heat dissipation component 220, improve heat dissipation performance, and reduce the risk of users being burned by the light guide rod 110.

[0062] Optionally, the heat dissipation portions 2222a on the first heat sink 2222 can be arranged in multiple rows in a lateral plane perpendicular to the central axis PP, with the projections of adjacent rows of heat dissipation portions 2222a staggered along a direction parallel to the rows. The heat dissipation portions 2222a can be perpendicular to the second surface of the first heat sink 2222. Adjacent heat dissipation portions 2222a can be staggered along a direction parallel to the rows. In conjunction with the aforementioned embodiment, the air blown by the cooling fan 300 generally blows towards the first heat sink 2222 from a direction perpendicular to the heat dissipation portions 2222a. The staggered heat dissipation portions 2222a form a curved heat dissipation channel, thereby extending the length of the heat dissipation channel, prolonging the contact time between the cold air and the heat dissipation portions 2222a, and thus improving heat dissipation performance. The airflow generated by the cooling fan 300 is not blocked by the heat dissipation portions 2222a and cannot reach other heat dissipation portions 2222a; all heat dissipation portions 2222a can have sufficient airflow passing through and carrying away heat, ensuring their heat dissipation capacity.

[0063] like Figure 5As shown, exemplarily, in one embodiment, the guide member 2221 may include a tube body 2221a enclosing a second light guide hole 221 and a flange 2221b protruding radially from the outer side of the tube body 2221a. The first heat sink 2222 has a through hole, and when the guide member 2221 is connected to the first heat sink 2222, the tube body 2221a can be inserted into the aforementioned through hole. The first heat sink 2222 can be sleeved on the tube body 2221a and fit against the outer side of the tube body 2221a. The first heat sink 2222 also fits against the flange 2221b. The flange 2221b and the tube body 2221a are both tightly fitted to the first heat sink 2222, increasing the contact area between the guide member 2221 and the first heat sink 2222, which is more conducive to heat conduction from the guide member 2221 to the first heat sink 2222. For example, the tube body 2221a has a first end and a second end opposite each other along the axial direction, with the first end closer to the light guide interface assembly 210 than the second end. The distance from the flange 2221b to the second end is less than the distance to the first end. The first heat sink is attached to the side of the flange facing the light guide interface assembly. This makes the tube body 2221a and the light guide rod 110 have the same length in the axial direction, thereby avoiding the guide member 2221 occupying too much space.

[0064] For example, in one embodiment, the heat dissipation assembly 220 may further include a second heat dissipation plate 223. The second heat dissipation plate 223 has a light-transmitting hole 223a coaxial with the second light guide hole 221 at its center. The second heat dissipation plate 223 is fixed axially to the side of the first heat sink 222 away from the light guide interface assembly 210. Large-angle light beams not focused by the converging lens assembly 240 can directly irradiate the second heat dissipation plate 223 and be converted into heat. The heat on the second heat dissipation plate 223 can be dissipated by any suitable method, such as air cooling or water cooling, thereby further improving heat dissipation performance. Typically, the first heat dissipation plate 2222 is relatively large due to its heat dissipation section 2222a and other structures. It can be placed near the light guide interface assembly 210, where there is more space to accommodate the first heat dissipation plate 2222. Furthermore, this location is closer to the housing of the light source device, making it easier to install a heat dissipation vent, ensuring that hot air can be promptly discharged outside the light source device, thus preventing the light source device from overheating. The second heat sink 223 is closer to the light source and the converging lens assembly 240, where space is limited. Therefore, the second heat sink 223 is smaller in size and has a relatively simple structure. For example, the second heat sink 223 can be in the shape of a disc, which is more suitable for placement in the limited space near the converging lens assembly 240. Understandably, to avoid obstructing the transmission of the light beam, the second heat sink 223 can be provided with a light-transmitting hole 223a along the central axis PP. The heat dissipation assembly 220 has a first heat sink 2222 and a second heat sink 223 respectively on both sides of the guide member 2221 with the second light guide hole 221, which can improve heat dissipation efficiency; and the three structures are fixedly connected as a whole, simplifying the installation process and enhancing the overall stability.

[0065] Furthermore, the second heat sink 223 can be made to fit against the guide member 2221. Thus, heat from the second heat sink 223 can be conducted to the guide member 2221, and further conducted to the first heat sink 2222, which has stronger heat dissipation performance, achieving more efficient heat dissipation. As mentioned earlier, since the space near the converging mirror assembly 240 is small and relatively enclosed, using the first heat sink 2222 to diffuse the heat from the second heat sink 223 solves the problem of insufficient heat dissipation in the enclosed space near the converging mirror assembly 240. This also allows for a more compact structure of the heat dissipation assembly 220 without complicating the structure of the light guide base 200.

[0066] In some embodiments, the second heat sink 223 may be made of beryllium copper and is deformable in the axial direction. After the light guide rod 110 passes through the guide member 2221, its end face can abut against the surface of the second heat sink 223. When the light guide rod 110 is inserted into place, its end can abut against the second heat sink 223. The deformation of the second heat sink 223 can eliminate errors accumulated during processing and assembly, preventing the light guide rod 110 from failing to be inserted into place due to errors. The second heat sink can also conduct heat generated on the end face of the light guide rod 110 to the first heat sink 222.

[0067] Optionally, the light-transmitting hole 223a on the second heat sink 223 can be coaxially arranged with the converging lens assembly 240. Further, the light-transmitting hole 223 is coaxial with the second light guide hole 221, and the diameter of the light-transmitting hole 223a is smaller than the diameter of the second light guide hole 221. When the light guide rod 110 is inserted to the end of the second light guide hole 221, the front end of the light guide rod 110 can abut against the inner periphery of the second heat sink 223, limiting the insertion direction of the light guide rod 110 along the central axis PP, preventing the light guide rod 110 from being inserted too deeply and causing the high-temperature light guide rod 110 to contact and damage other components located behind the second light guide hole 221. Furthermore, in this case, the light guide rod 110 can contact the second heat sink 223, allowing the second heat sink 223 to also dissipate heat for the light guide rod 110. At the same time, reducing the aperture of the light-transmitting hole 223a can increase the light-blocking area of ​​the second heat sink 223, preventing large-angle beams from shining on the protective sleeve 112 of the light guide rod 110 and causing it to heat up.

[0068] For example, such as Figure 4-5As shown, the light guide base 200 may further include a reset assembly 230. The reset assembly 230 may be disposed on the heat dissipation assembly 220 and the mounting bracket 250. The reset assembly 230 may include a reset elastic member 231. The reset elastic member 231 is used to apply a radial (i.e., parallel to the aforementioned lateral plane) reset elastic force to the heat dissipation assembly 220 to make the first light guide hole 211 and the second light guide hole 221 coaxial. In the illustrated embodiment, the reset elastic member 231 presses against the edge of the first heat dissipation plate 2222. In other embodiments not shown, the reset elastic member 231 may act at any suitable position on the first heat dissipation plate 2222. As previously mentioned, due to the existence of cumulative tolerances, when the light guide rod 110 is inserted into the second light guide hole 221, the heat dissipation assembly 220 may move as a whole in the lateral plane under the action of the light guide rod 110. After the light guide rod 110 is pulled out, the reset elastic member 231 can apply a reset elastic force to the heat dissipation assembly 220, so that the first light guide hole 211 and the second light guide hole 221 return to a coaxial setting to prepare for the next insertion of the light guide rod 110. After the light guide rod 110 is pulled out, the heat dissipation assembly 220 may also cause the first light guide hole 211 and the second light guide hole 221 to be out of axis due to gravity. In this case, the reset elastic member 231 can also overcome gravity to ensure the coaxiality of the first light guide hole 211 and the second light guide hole 221. The second light guide hole 221 on the heat dissipation assembly 220 is always kept in a coaxial position with the first light guide hole 211 so that the light guide rod 110 can smoothly enter the second light guide hole 221 when it is inserted.

[0069] like Figure 5As shown, the reset assembly 230 may include retaining plates that are fixed to the side of the mounting bracket 250. In the embodiment shown, the retaining plates may include a first retaining plate 232 and a second retaining plate 233. Each of the first retaining plate 232 and the second retaining plate 233 is provided with a reset elastic element 231, thereby providing reset elastic force to the heat dissipation assembly 220 in multiple directions to improve the stability of the reset assembly 230. Further, each of the first retaining plate 232 and the second retaining plate 233 may be provided with multiple reset elastic elements 231. These reset elastic elements 231 can provide reset elastic force to the heat dissipation assembly 220 in multiple directions in pairs. Preferably, there are at least two pairs of reset elastic elements 231, where one pair of reset elastic elements 231 abuts against both sides of the heat dissipation assembly 220 along a first straight line in the lateral plane, and another pair of reset elastic elements 231 abuts against both sides of the heat dissipation assembly 220 along a second straight line in the lateral plane. The first straight line is perpendicular to the second straight line, and the intersection of the first and second straight lines is located on the central axis PP. In this way, these reset elastic members 231 can push the heat dissipation component 220 towards the central axis PP evenly from four directions, ensuring that the heat dissipation component 220 can be reset towards the central axis PP, thereby improving the coaxiality of the second light guide hole 221 and the first light guide hole 211 when the light guide seat 200 of the light source is idle.

[0070] For example, such as Figure 5 As shown, the heat dissipation assembly 220 may further include an axial elastic member 226, which presses the heat dissipation assembly 220 against the fixing frame 250 along the central axis PP. At the contact surface between the heat dissipation assembly 220 and the fixing frame 250, under the pressure of the axial elastic member 226, the heat dissipation assembly 220 and the fixing frame 250 are fully abutted. This ensures that the heat dissipation assembly 220 can only slide in a lateral plane perpendicular to the central axis PP relative to the fixing frame 250, avoiding an angle between the second light guide hole 221 and the central axis PP, which would affect the insertion accuracy of the light guide rod 110. Optionally, lubrication measures can be added to the contact surface between the heat dissipation assembly 220 and the fixing frame 250 to make the sliding of the heat dissipation assembly 220 along the contact surface smoother. For example, adding a Teflon coating, adding lubricating oil, or adding ball bearings to the contact surface.

[0071] Optionally, the axial elastic element 226 can be sleeved on the limiting element 225, such as... Figure 3 and 5As shown. The limiting member 225 can be fixed to the fixing frame 250. The axial elastic member 226 is in a compressed state, clamped between the limiting member 225 and the heat dissipation assembly 220 in a direction parallel to the central axis PP, stably applying pressure to the heat dissipation assembly 220 perpendicular to its sliding lateral plane, so that the heat dissipation assembly 220 is tightly fitted to the fixing frame 250, thereby restricting the heat dissipation assembly 220 to move precisely within the aforementioned lateral plane. For example, the limiting member 225 can be a screw, and the axial elastic member 226 can be a compression spring. During assembly, the spring can first be sleeved on the screw, and then the screw can be threaded through the limiting hole 224 on the heat dissipation assembly 220 and connected to the fixing frame 250. Thus, the spring can be clamped between the screw head and the heat dissipation assembly 220 and in a compressed state. Thus, the axial elastic member 226 can be installed using the limiting member 225, thereby simplifying the structure. Moreover, the force between the heat dissipation assembly 220 and the fixing frame 250 can be adjusted by the axial elastic member 226. If the heat sink 220 and the mounting bracket 250 are kept relatively fixed along a direction parallel to the central axis PP by directly relying on the limiting member 225, then the force between the heat sink 220 and the mounting bracket 250 is determined during the installation process. The magnitude of this force depends on the installer; too large a force will cause the heat sink 220 to move unevenly in the lateral plane, while too small a force may result in an axial gap between the heat sink 220 and the mounting bracket 250, leading to an undesirable angle between the second light guide hole 221 and the central axis PP. Especially when the heat sink 220 is connected to the mounting bracket 250 via multiple limiting members 225, the force exerted by different limiting members 225 on the heat sink 220 may vary due to installation reasons, resulting in uneven force acting between the heat sink 220 and the mounting bracket 250. By providing an axial elastic element 226 on each limiting element 225, the force exerted by the limiting element 225 on the heat dissipation assembly 220 can be an elastic force, which can ensure that the heat dissipation assembly 220 can fit evenly with the fixing frame 250 to a certain extent, making the heat dissipation assembly 220 move more smoothly in the lateral plane.

[0072] See also Figure 2 and 6-7. Exemplarily, the light guide base 200 may further include a converging lens assembly 240, which is coaxially arranged with the first light guide hole 211 along the central axis PP. A heat dissipation assembly 220 may be located between the light guide interface assembly 210 and the converging lens assembly 240. A mounting bracket 250 may be fixed to the converging lens assembly 240. Optionally, the mounting bracket 250 may be fixed to the converging lens assembly 240 by means of gluing or fastener connection. After the light guide rod 110 is inserted into the second light guide hole 221, the heat dissipation assembly 220 moves in a lateral plane perpendicular to the central axis PP according to the deviation after the light guide rod 110 is inserted, while the converging lens assembly 240 remains stationary relative to the first light guide hole 211. Since the converging lens assembly 240 and the first light guide hole 211 are coaxially arranged, the light beam passing through the converging lens assembly 240 can be focused onto the end of the light guide rod coaxial with the first light guide hole 211, thereby achieving efficient coupling. Furthermore, fixing the mounting bracket 250 to the converging lens assembly 240 allows the mounting bracket 250 and the converging lens assembly 240 to be modularized, which is more conducive to ensuring their coaxiality.

[0073] In some embodiments, the converging lens assembly 240 may also be coaxially arranged with the second light guide hole 221 and fixedly connected to the heat dissipation assembly 220. Thus, when the light guide rod 110 is inserted into the second light guide hole 221, the second light guide hole 221 moves and adapts to the position of the light guide rod 110. The converging lens assembly 240 can move together with the second light guide hole 221 and always remain coaxial, so that the light beam focused by the converging lens assembly 240 can be focused on the center of the end face of the light guide rod 110.

[0074] like Figure 7 As shown, exemplarily, the converging lens assembly 240 may include a lens group 241, a lens barrel 242, and a converging mounting base 243. The lens group 241 is used to converge light onto the light incident surface of the light guide rod 110 inserted into the second light guide hole 221. The light incident surface is located at the front end of the light guide rod 110. The lens group 241 can converge the illumination light into a high-energy, small-angle beam, thereby improving the optical coupling efficiency with the optical fiber 111 within the light guide rod 110. The lens barrel 242 is used to fix the lens group 241, keeping the relative positions of the lenses inside the lens group 241 fixed, and ensuring that the optical axis of the lens group 241 is always located on the central axis PP. The converging mounting base 243 is threaded to the outer surface of the lens barrel 242, allowing the lens barrel 242 to be adjusted relative to the converging mounting base 243 along the central axis PP. Optionally, as... Figure 6 As shown, the converging mounting base 243 may be provided with multiple radial threaded holes 2431. A locking screw can be threaded into the radial threaded holes 2431 and abuts against the lens barrel 242. When the position of the lens barrel 242 needs to be adjusted, the locking screw can be loosened. After the position of the lens barrel 242 is adjusted, the locking screw can be tightened to lock the lens barrel 242 in place. (See also...) Figure 4 and Figure 7 For example, the converging mount 243 can be fixed to the optical engine housing 400. The portion of the lens barrel 242 that connects to the converging mount 243 can be cylindrical, with external threads on the outer surface of the connection portion and matching internal threads inside the converging mount 243. The mounting bracket 250 can be fixed to the lens barrel 242 by any suitable method, such as gluing or fastener connection. When the lens barrel 242 is rotated, the lens barrel 242 moves along the central axis PP, carrying the internally fixed lens group 241. The heat dissipation assembly 220 also rotates with the lens barrel 242 and moves along the central axis PP. Since the light guide plug is mechanically connected to the light guide base 200, the axial position of the light guide rod 110 remains unchanged. As the heat dissipation assembly 242 undergoes axial displacement, the position of the light guide rod 110 within the second light guide hole 221 changes. However, the above adjustments are only used to compensate for the assembly tolerances between the components of the light guide base 200, so the movement distance will not be too large. Thus, the head end of the light guide rod 110 can still remain in the second light guide hole 221 and maintain contact with the inner wall of the second light guide hole 221. By rotating the lens barrel 242 in different directions, the lens group 241 can be moved closer to or further away from the light guide rod 110 along the axial direction to find the optimal coupling position between the focused light and the optical fiber 111 in the light guide rod 110, thereby improving coupling efficiency and reducing heat generation.

[0075] In addition, fixing the mounting bracket 250 to the lens barrel 242 can also bring the following benefits: 1. The overall structure is compact and saves space; 2. It can make up for the overall tolerance of the light guide seat 200.

[0076] Optionally, such as Figure 6-7 As shown, the lens group 241 within the lens barrel 242 may include a first lens 241a and a second lens 241b. Optionally, the converging lens assembly 240 may further include a collimating spring 245 for fixing the lens group 241 within the lens barrel 242. A stepped surface may be provided on the inner wall of the lens barrel 242, and this stepped surface may face away from the heat dissipation assembly 220. The stepped surface divides the space within the lens barrel 242 into a large-diameter segment and a small-diameter segment. Figure 6 As shown, the first lens 241a is disposed within the small-diameter section, and the second lens 241 is disposed within the large-diameter section. The collimating spring 245 may include a first collimating spring 245a and a second collimating spring 245b. The first collimating spring 245a is fixed to the stepped surface and presses against the first lens 241a, thereby fixing the first lens 241a within the small-diameter section. The second collimating spring 245b is fixed to the end face of the lens barrel 242 and presses against the second lens 241b, thereby fixing the second lens 241b within the large-diameter section.

[0077] See also Figure 4 and Figure 7Furthermore, in addition to the lens group 241, lens barrel 242, and converging mount 243, the converging lens assembly 240 may also include a locking ring 244. The locking ring 244 is sleeved on and threadedly connected to the lens barrel 242, and abuts against the converging mount 243. For example, the locking ring 244 can be threadedly connected to the lens barrel 242 from the side near the heat dissipation assembly 220. When the axial position of the lens group 241 needs to be adjusted, the locking ring 244 is unscrewed to space it from the converging mount 243. When the lens barrel 242 is adjusted to the optimal coupling position between the converging light and the optical fiber 111 within the light guide rod 110, the locking ring 244 is tightened until it abuts against the converging mount 243. Thus, the function of adjusting the position of the lens group 241 along the central axis PP is satisfied, and the locking ring 244 ensures that the position of the lens group 241 remains stable during use.

[0078] In the above embodiment, the first heat sink 2222 is rotatable, allowing adjustment of the lens's focal point during rotation. After rotation, the airflow from the cooling fan 300 is not obstructed by the heat dissipation unit 2222a. In other words, the first heat sink 2222 achieves good heat dissipation regardless of the airflow direction. The first heat sink 2222 can be generally constructed in circular, hexagonal, or octagonal shapes, and will not interfere with other components during rotation.

[0079] for Figure 8 In the illustrated embodiment, exemplarily, the heat dissipation assembly 220 includes a first heat sink 222, a second light guide hole 221 disposed on the first heat sink 222, and the first heat sink 222 further includes a plurality of heat dissipation fins 2224 disposed around the second light guide hole 221, the projections of the plurality of heat dissipation fins 2224 in the lateral plane being parallel to each other. In this embodiment, the first heat sink 222 is constructed in a square shape so that it cannot rotate, thus airflow can pass through the first heat sink 222 from only one direction, achieving a good heat dissipation effect. Disposing of the second light guide hole on the first heat sink 222 reduces the number of parts, and significantly reduces the difficulty and cost of manufacturing.

[0080] For the multiple heat dissipation fins 2224, a first spacing is formed between the multiple heat dissipation fins 2224 located on both sides of the second light guide hole along a first direction extending from the multiple heat dissipation fins 2224, and a second spacing is formed between the multiple heat dissipation fins 2224 located on both sides of the second light guide hole along a second direction. The first spacing is greater than the second spacing, and the second direction is perpendicular to the first direction and the axial direction. Software simulation has determined that the airflow path formed by this shape can quickly remove heat, and the first heat sink 222 formed thereby has good heat dissipation performance.

[0081] In this embodiment, the first radiator 222 is attached to the fixing frame in the same way as in the above embodiment. Specifically, the first radiator is pressed against the fixing frame in the axial direction by the limiting member 225 and the axial elastic member 226, so that it can move in the lateral plane and its position in the axial direction remains almost unchanged.

[0082] As described above, in order to prevent the first heat sink 222 from drooping under gravity after the light guide rod 110 is pulled out, which would cause the first light guide hole and the second light guide hole 221 to be misaligned too much, a reset component 230 is also provided to maintain the position of the first heat sink 222.

[0083] Exemplarily, the mounting bracket 250 has a plurality of first positioning portions 251 arranged in a circumferential direction surrounding the axial direction. The heat dissipation assembly 220 has a plurality of second positioning portions 2225 arranged in a circumferential direction, with each of the second positioning portions 2225 corresponding to a plurality of first positioning portions. Multiple reset elastic members 231 are present, each reset elastic member 231 connected between a corresponding set of first and second positioning portions 2225, and each reset elastic member 231 is elastically deformable in a radial direction perpendicular to the axial direction. (Refer to reference...) Figure 8 and Figure 9ATaking this embodiment as an example, the second positioning part 2225 can be constructed as a boss extending axially from the body of the first heat sink 222 towards the fixing frame, with each boss located outside the first positioning part 251 along a radial direction perpendicular to the axial direction. The reset elastic member 231 may include the helical spring 2311 shown in the figure, which can provide elastic force between the first positioning part 251 and the second positioning part 2225. When the heat dissipation assembly 220 moves in the lateral plane under the force of the light guide rod 110, part of the reset elastic member 231 can be compressed, so that the corresponding first positioning part and second positioning part 2225 move closer to each other, while the other first positioning parts 251 and second positioning parts 2225 move further away from each other, and the compression of the helical spring is reduced. This allows the second light guide hole 221 to move in the lateral plane. After the light guide rod 110 is pulled out, the lower reset elastic member 231 can maintain the second light guide hole 221 in a position close to the first light guide hole 211 through its elastic force. This allows the second light guide rod 110 to be inserted into the first light guide hole 211 next time, acting on the chamfered area of ​​the second light guide hole 221, thereby applying a force that allows the second light guide hole 221 and the first heat sink 222 to move in the lateral plane. In an embodiment not shown, the elastic reset member 231 can also be made of an elastic material such as a rubber pad, with the elastic material sandwiched in the gap between the first positioning part 251 and the second positioning part 2225. In another embodiment, the reset elastic member 231 can also include a spring connected between the fixing frame 250 and the first heat sink 222. In short, any elastic force can be generated between the first positioning part 251 and the second positioning part 2225.

[0084] For example, for each pair of corresponding first positioning portions 251 and second positioning portions 2225: one of the first positioning portions 251 and second positioning portions 2225 has a positioning groove 2511 extending in the radial direction, and the other of the first positioning portions 251 and second positioning portions 2225 has an abutting surface. The opening of the positioning groove 2511 and the abutting surface are arranged opposite each other in the radial direction. The corresponding reset elastic member 231 is accommodated in the positioning groove 2511, with one end abutting against the bottom of the positioning groove 2511, and the other end extending from the opening of the positioning groove 2511 and abutting against the abutting surface. In the embodiment shown in the figure, the positioning groove 2511 is provided on the fixing frame 250, and the second positioning portion 2225 on the first heat sink 222 forms the abutting surface. This makes processing more convenient. In an embodiment not shown, the abutting surface can also be provided on the fixing frame 250, and the positioning groove 2511 can be provided on the second positioning portion 2225 of the first heat sink 222. The reset elastic element 231 is housed in the positioning groove 2511, which prevents it from falling out during assembly, thus simplifying the assembly process and reducing costs. During use, the reset elastic element 231 is also less prone to misalignment.

[0085] like Figure 9B As shown, exemplarily, the reset elastic element 231 includes a coil spring 2311 and a stop member 2312, with the coil spring 2311 disposed in the positioning groove 2511. In the radial direction, the stop member 2312 is clamped between the coil spring 2311 and the abutment surface. The coil spring 2311 is relatively simple to manufacture and has low cost. When the coil spring 2311 is compressed, its diameter may expand. To avoid jamming during compression, the diameter of the coil spring 2311 is usually slightly smaller than the positioning groove 2511. This may prevent the coil spring 2311 from extending along the positioning groove 2511, affecting performance. Optionally, the stop member 2312 can be a sleeve closed at one end, which can be fitted onto the coil spring 2311. The stop member 2312 can have a larger size than the coil spring 2311 and match the positioning groove 2511. The coil spring 2311 is abutted by the stop member 2312, and the resulting elastic force always follows the direction of the positioning groove 2511, making it more reliable. The abutment 2312 can be constructed in various shapes, such as block or spherical, as long as it can fit into the positioning groove 2511. The size of the abutment 2312 is larger than that of the coil spring 2311, providing a basis for the stop element described below to prevent the abutment 2312 and the coil spring 2311 from falling out of the positioning groove 2511. On the other hand, the end face of the coil spring 2311 is usually quite sharp, which may scratch the abutment surface, causing severe wear on the abutment surface during long-term use. The abutment 2312 can have a smoother surface or a contact surface with relatively low hardness, thereby reducing wear on the abutment surface.

[0086] For example, the abutment 2312 is spherical. For instance, the abutment 2312 can be made of steel ball, which is a standard part and can reduce the cost of the light guide seat. Furthermore, the spherical abutment 2312 can be installed into the positioning groove 2511 at any angle, and its smooth surface is less likely to cause scratches to the contact surface.

[0087] For example, the groove opening of the positioning groove 2511 is provided with a stop 2512, which includes a limiting opening 2512a, wherein a portion of the abutment 2312 of the corresponding reset elastic member protrudes beyond the limiting opening 2512a and abuts against the contact surface. During the assembly of the light guide base, the reset elastic member and the stop 2512 can be installed into the positioning groove 2511 in sequence first, and then the heat dissipation assembly can be installed. During the installation of the heat dissipation assembly, the stop 2512 can prevent the reset elastic member from falling out of the positioning groove, and the portion of the reset elastic member protruding from the limiting opening 2512a can still apply an elastic force to the contact surface, which can greatly simplify the installation process and reduce assembly costs. Optionally, the spring can be in a compressed state, so that the reset elastic member 231 can apply a greater elastic force to the contact surface. In this case, the stop 2512 can apply a certain pressure to the reset elastic member when the heat dissipation assembly 220 is not installed in place, preventing the abutment 2312 from popping out under the action of the elastic force. Therefore, the stop 2512 can not only limit the stop 2312, but also ensure that the coil spring 2311 will not fall out of the positioning groove 2511.

[0088] refer to Figure 10 Exemplarily, the converging lens assembly 240 includes a lens group 241 for converging light onto the light incident surface of the light guide rod 110, and the lens group 241 is fixed inside the lens barrel 242. A converging mounting base 243 can be sleeved on the lens barrel 242, and the lens barrel 242 is movable relative to the converging mounting base 243 in an axial direction. A fixing bracket 250 is fixed to the converging mounting base 243. A fixing assembly 246 is movably connected to the converging mounting base 243 between a locked position and a released position, wherein, in the locked position, the fixing assembly 246 locks the lens barrel to the converging mounting base 243; and in the released position, the lens barrel is movable relative to the converging mounting base 243 in an axial direction. As described above, in the embodiment employing a rotatable first heat sink 2222, the lens barrel 242 is focused by axial movement via threaded rotation, and the first heat sink 2222 is rotatable together with the lens barrel 242. When a square first heat sink 222 is used, the first heat sink 222 cannot rotate, and the lens barrel 242 can be constructed to slide along the axial direction. In the embodiment shown in the figure, the fixing component 246 can be a grommet screw, and the converging mounting base 243 can be provided with threaded holes for installing the grommet screw. After loosening the grommet screw, the lens barrel can move back and forth; when the lens barrel is adjusted to the appropriate position, the grommet screw can be tightened. This design is relatively simple and has a low manufacturing cost.

[0089] According to another aspect of this application, an endoscope light source is provided, which has a light guide seat 200 that includes some or all of the technical features of the foregoing embodiments. Therefore, this endoscope light source includes all the technical effects described above, which will not be repeated here.

[0090] According to another aspect of this application, a medical system is provided, comprising an endoscope and any of the aforementioned endoscopic light sources. The endoscope has a light guide plug, which has a light guide rod 110. The light guide plug is detachably connected to a light guide base 200 of the light source, and the light guide rod 110 is sequentially inserted into a first light guide hole 211 and a second light guide hole 221 when the light guide plug is connected to the light guide base 200.

[0091] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0092] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0093] 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.

[0094] 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.

[0095] This application 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 this application to the scope of the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A light source light guide holder (200) for mating connection with a light guide plug of an endoscope, the light guide plug having a light guide rod (110), characterized in that, The light guide base (200) includes: A light guide interface assembly (210) is provided with a first light guide hole (211); Fixture (250); and A heat dissipation assembly (220) is connected to the mounting bracket along the axial direction of the first light guide hole and is movable relative to the mounting bracket in a lateral plane perpendicular to the axial direction. The heat dissipation assembly (220) includes a second light guide hole (221) extending along the axial direction. The second light guide hole (221) is for inserting the head end of a light guide rod (110) passing through the first light guide hole (211). The inner diameter of at least a portion of the second light guide hole (221) is adapted to the outer diameter of the portion of the head end that is inserted into the at least a portion.

2. The light guide (200) of claim 1, wherein, The length of at least a portion of the second light guide hole (221) is not less than half of the minimum inner diameter of the second light guide hole (221).

3. The light guide (200) of claim 2, wherein, At least a portion of the second light guide hole (221) is constructed as a straight hole, and the length of the straight hole along the axial direction is not less than half of its inner diameter.

4. The light guide (200) of claim 1, wherein, One of the fixing bracket (250) and the heat dissipation assembly (220) is provided with a limiting hole (224) parallel to the axial direction, and the other of the fixing bracket (250) and the heat dissipation assembly (220) is provided with a limiting member (225). The limiting member (225) is installed in the limiting hole (224), and a gap is provided between the side of the limiting member (225) and the hole wall of the limiting hole (224). The gap allows the heat dissipation assembly (220) to move relative to the fixing bracket (250) in the lateral plane.

5. The light guide (200) of claim 4, wherein, The light guide base (200) further includes an axial elastic element (226), which is disposed between the fixing frame and the heat dissipation assembly and is used to apply an axial elastic force to the heat dissipation assembly (220) in the axial direction so that the heat dissipation assembly (220) abuts against the fixing frame (250).

6. The light guide (200) of claim 1, wherein, The heat dissipation assembly (220) includes a first heat sink, the first heat sink comprising: Guide member (2221), the second light guide hole (221) is disposed on the guide member (2221); and The first heat sink (2222) is fixed to the guide (2221) and is thermally conductive with the guide (2221).

7. The light guide (200) of claim 6, wherein, The guide member (2221) includes a tube (2221a) that surrounds and forms the second light guide hole (221) and a flange (2221b) that protrudes radially from the outer side of the tube (2221a). The first heat sink (2222) is sleeved on the tube (2221a) and fits against the outer side of the tube (2221a). The first heat sink (2222) also fits against the flange (2221b).

8. The light guide base (200) according to claim 7, characterized in that, The tube body (2221a) has a first end and a second end opposite to each other along the axial direction, the first end being closer to the light guide interface assembly (210) than the second end, and the flange (2221b) being less than the distance to the second end. The first heat sink is attached to the side of the flange facing the light guide interface assembly.

9. The light guide (200) of claim 6, wherein, The surface of the first heat sink (2222) is provided with a plurality of heat dissipation parts (2222a), the projections of the plurality of heat dissipation parts (2222a) in the lateral plane are arranged in multiple rows, and the projections of heat dissipation parts (2222a) in adjacent rows are staggered along a direction parallel to the rows; and / or The thermal conductivity of the guide component is not lower than that of the first heat sink.

10. The light guide (200) of claim 1, wherein, The heat dissipation assembly includes a first heat sink, and a second light guide hole (221) is disposed on the first heat sink. The first heat sink further includes a plurality of heat dissipation fins disposed around the second light guide hole (221). The projections of the plurality of heat dissipation fins in the lateral plane are parallel to each other. For the plurality of heat dissipation fins, wherein: Along a first direction extending from the plurality of heat dissipation fins, a first spacing is provided between the plurality of heat dissipation fins located on both sides of the second light guide hole. Along the second direction, there is a second spacing between multiple heat dissipation fins located on both sides of the second light guide hole, the first spacing is greater than the second spacing, and the second direction is perpendicular to the first direction and the axial direction.

11. The light guide (200) according to any one of claims 6-10, characterized in that The heat dissipation assembly (220) further includes a second heat dissipation plate (223), the center of which is provided with a light-transmitting hole (223a) coaxial with the second light guide hole (221). The second heat dissipation plate (223) is fixed along the axial direction to the side of the first heat sink away from the light guide interface assembly (210), wherein: The second heat sink is deformable in the axial direction.

12. The light guide (200) of claim 1, wherein, The light guide base (200) further includes a reset assembly (230), which is disposed between the fixing frame (250) and the heat dissipation assembly (220). The reset assembly (230) includes a reset elastic element (231), which is used to apply a reset elastic force parallel to the lateral plane to the heat dissipation assembly (220) so that the first light guide hole (211) and the second light guide hole (221) are coaxial.

13. The light guide (200) of claim 12, wherein, The reset assembly (230) also includes a retaining piece that is fixed relative to the retainer (250); One end of the reset elastic element is fixed to the retaining plate, and the other end abuts against the heat dissipation assembly (220) in a direction parallel to the lateral plane.

14. The light guide base (200) according to claim 12, characterized in that, The fixing frame (250) has a plurality of first positioning parts arranged in a circumferential direction around the axial direction; The heat dissipation assembly (220) has a plurality of second positioning portions arranged along the circumferential direction, and the plurality of second positioning portions are arranged in a one-to-one correspondence with the plurality of first positioning portions, wherein: There are multiple reset elastic elements (231), each reset elastic element (231) is connected between a set of corresponding first positioning parts and second positioning parts, and each reset elastic element (231) can elastically deform along a radial direction perpendicular to the axial direction.

15. The light guide (200) of claim 14, wherein, For each pair of corresponding first and second positioning parts: one of the first and second positioning parts has a positioning groove extending along the radial direction, and the other of the first and second positioning parts has an abutting surface, with the groove opening of the positioning groove and the abutting surface being arranged opposite to each other along the radial direction; The corresponding reset elastic element is accommodated in the positioning groove, with one end abutting against the bottom of the positioning groove and the other end extending from the opening of the positioning groove and abutting against the abutting surface.

16. The light guide (200) of claim 15, wherein, The reset elastic element includes a helical spring and a stop element. The helical spring is disposed in the positioning groove; Along the radial direction, the abutment is held between the helical spring and the abutment surface.

17. The light guide (200) of claim 16, wherein, The abutment is spherical.

18. The light guide (200) of claim 16, wherein, The positioning groove is provided with a stop, the stop including a limiting opening, wherein: A portion of the abutment of the corresponding reset elastic element protrudes beyond the limiting opening and abuts against the abutting surface.

19. The light guide (200) according to any of claims 1-10, 12-18, characterized in that, The light guide base (200) further includes a converging mirror assembly (240), which is fixed on the heat dissipation assembly and the optical axis of the converging mirror assembly (240) is coaxial with the second light guide hole (221). The heat dissipation assembly (220) is located between the converging mirror assembly (240) and the light guide interface assembly (210).

20. The light source light guide (200) according to any of claims 1-10, 12-18, characterized by, The light guide base (200) further includes a converging mirror assembly (240), the optical axis of which is coaxial with the first light guide hole (211), the heat dissipation assembly (220) is located between the converging mirror assembly (240) and the light guide interface assembly (210), and the converging mirror assembly (240) is fixedly connected to the fixing frame (250).

21. The light guide (200) of claim 20, wherein, The converging mirror assembly (240) includes: Lens group (241), the lens group (241) is used to converge light onto the light incident surface of the light guide rod (110); A lens barrel (242), the lens group (241) is fixed inside the lens barrel (242), and the lens barrel (242) is fixed to the mounting bracket (250); and A converging mount (243) is threadedly connected to the outer side of the lens barrel (242) so that the lens barrel (242) is adjustable relative to the converging mount (243) along the axial direction.

22. The light guide (200) of claim 21, wherein, The converging lens assembly (240) further includes a locking ring (244), which is sleeved on the lens barrel (242) and threadedly connected to the lens barrel (242), and the locking ring (244) abuts against the converging mounting base (243).

23. The light guide (200) of claim 20, wherein, The converging mirror assembly (240) includes: Lens group (241), the lens group (241) is used to converge light onto the light incident surface of the light guide rod (110); The lens barrel (242) is fixed inside the lens barrel (242); A converging mounting base (243) is sleeved on the lens barrel (242), and the lens barrel (242) is movable relative to the converging mounting base (243) along the axial direction; a fixing bracket is fixed to the converging mounting base (243); and A fixing component, which is movably connected to the convergent mounting base (243) between a locked position and a released position, wherein: When the fixing component is in the locked position, the lens barrel is locked to the converging mount (243); and when the fixing component is in the released position, the lens barrel is movable relative to the converging mount (243) along the axial direction.

24. An endoscope light source, characterized by, Includes the light guide base (200) as described in any one of claims 1-23.

25. A medical system, characterized by include: The endoscope light source as described in claim 24; An endoscope having a light guide plug having a light guide rod (110) detachably connected to a light source light guide base (200), wherein the light guide rod (110) is inserted sequentially into the first light guide hole (211) and the second light guide hole (221) when the light guide plug is connected to the light source light guide base (200).

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