Light source module and three-axis rotary damping autofocus microscope

Abstract

The utility model relates to medical instrument technical field especially, and more particularly to a light source module and three -axis rotation damping automatic focusing microscope. The utility model discloses light source module, include: base is provided with center hole and a plurality of locating plane, a plurality of locating plane surrounds center hole setting, a plurality of installation shell are provided with accommodation cavity and the mounting hole of through the accommodation cavity. A plurality of light source components, including lamp pearl, the light source component is located in the accommodation cavity, base, including first through -hole, the first through -hole side away from the base is provided with the limiting slot, the bottom surface of base and the abutment of locating plane, sleeve, sleeve is located in the base outside, limiting board is provided with second through -hole, and at least a portion of lamp pearl is from second through -hole and goes out, lens component, including optical lens, the normal of locating plane is inclined to the axis direction of center hole. The utility model can improve the lighting effect of light source module.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a light source module and a three-axis rotation damping autofocus microscope. Background Technology

[0002] Dental surgical microscopes require stable, uniform, and low-glare illumination and imaging in confined, deep cavities with strong specular reflection. The patient's oral cavity contains highly reflective surfaces such as enamel, metal restorations, ceramic crowns, salivary membranes, and the dental mirror itself. Frequent movement of hand instruments and retractors, along with significant spatial obstruction, can easily lead to hard shadows and large areas of bright spots if the illumination and imaging optical axes are misaligned, obscuring tissue details. Furthermore, modern dental microscopes generally integrate recording and imaging functions; automatic exposure (AE) and automatic focus (AF) are sensitive to the uniformity and stability of the entrance pupil illumination field. Glare and uneven illumination directly cause poor focusing, image noise, and color cast. Utility Model Content

[0003] In view of this, the present invention provides a light source module and a three-axis rotation damping autofocus microscope to solve the technical problem that the illumination and imaging optical axes cannot be kept strictly aligned in the prior art.

[0004] In a first aspect, this utility model provides a light source module, comprising: The base has a central hole and several positioning planes arranged around the central hole; Several mounting shells are provided with receiving cavities and mounting holes that penetrate the receiving cavities shown; A plurality of light source components, including lamp beads, are located in the accommodating cavity; The base includes a first through hole, a limiting groove is provided on the side of the first through hole facing away from the base, the bottom surface of the base abuts against the positioning plane, and the bottom wall of the limiting groove abuts against the bottom wall of the light source component. A sleeve, fitted over the base; The limiting plate is provided with a second through hole, through which at least a portion of the lamp beads pass. The limiting plate abuts against the light source component on the side away from the base. A lens component, including an optical lens, is mounted on the side of the limiting plate facing away from the base, and the lens component extends through the mounting hole; The normal to the positioning plane is inclined toward the axis of the central hole.

[0005] Preferably, the mounting shell has a first notch on the side facing the central hole, and at least a portion of the sleeve is exposed outside the first notch.

[0006] Preferably, the outer wall of the mounting shell is fan-shaped, and the plurality of mounting shells are assembled into a ring, with the first notch located on the inner side of the ring.

[0007] Preferably, the base is further provided with a base plate and a protrusion, the protrusion extending from the base plate toward the light source component, the diameter of the protrusion being smaller than the diameter of the base plate, and the sleeve being fitted onto the outside of the protrusion and abutting against the base plate.

[0008] Preferably, the limiting groove is located in the protrusion.

[0009] Preferably, the sidewall of the groove is provided with an arc-shaped second notch and a third notch, the second notch and the third notch being angularly offset in the circumferential direction.

[0010] Preferably, the limiting plate includes a limiting bottom and a boss, the boss extending from the surface of the limiting bottom in a direction away from the base, the diameter of the boss being smaller than that of the limiting bottom, and the lens component further includes a cylindrical support portion connected to the limiting bottom of the optical lens, at least a portion of the support portion being embedded between the inner wall of the sleeve and the outer wall of the boss.

[0011] Preferably, the accommodating cavity of the mounting shell is further provided with a first mounting part, which extends from the top of the mounting shell toward the base. One side of the first mounting part is connected to the inner wall of the mounting shell. The first mounting part is located outside the mounting hole and is provided with a first connecting hole. The sleeve is provided with a second mounting part and is provided with a second connecting hole. The base is provided with a third mounting part and is provided with a third connecting hole. The base is provided with a fourth connecting hole. The first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole are stacked sequentially toward the base. The connector passes through the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole in sequence.

[0012] Preferably, the edges of the plurality of light source components are provided with a plurality of wire-passing notches.

[0013] Secondly, this utility model also provides a three-axis rotational damping autofocus microscope, including a lens assembly and the light source module described in the first aspect, wherein the end of the lens assembly extends through the central hole of the light source module.

[0014] In summary, the beneficial effects of this utility model are as follows: The light source module and three-axis rotationally damped autofocus microscope provided by this utility model feature a central hole and a surrounding positioning plane on the base, allowing the lens to pass through the central hole. The light source sectors are arranged around the hole, forming a near-coaxial ring illumination, reducing shadows and reflections caused by instrument obstruction. The normal of the positioning plane is inclined towards the axis of the central hole, balancing the incident light between near-coaxial and small-angle oblique incidence, suppressing glare and enhancing surface texture contrast. Several mounting cavities and through-holes provide channels for the lens components and confine the light source components to a fixed optical position. A limiting groove is provided on the back of the first through-hole of the base, abutting against the bottom wall of the light source components, and the bottom surface of the base abuts against the positioning plane, forming a hard limit in the axial direction, stably controlling the axial distance between the LED and the lens, and reducing bright rings, dark rings, and color spots. A sleeve is fitted outside the base, and together with the limiting plate and the support relationship of the lens components, it provides concentric cylindrical surface constraints, improving concentricity with the optical axis. A second through-hole is provided in the limiting plate to control the light emission of the LED beads, and it abuts against the light source component on the side away from the base, forming a geometric aperture for light shielding and preventing cross-light. The lens component is covered outside the limiting plate and extends out through the mounting hole, forming a flat and cleanable light-emitting surface to suppress side leakage and stray light. This results in improved illuminance field uniformity, significantly reduced glare, and long-term stable optical axis consistency, thereby improving the reliability and response consistency of automatic exposure and autofocus, and providing clear and detailed imaging for deep cavities of the oral cavity and high-reflectivity scenes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0016] Figure 1 This is a three-dimensional structural diagram of the light source module of this utility model.

[0017] Figure 2 This is an exploded structural diagram of the light source module of this utility model.

[0018] Figure 3 This is a cross-sectional view of the light source module of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the mounting shell in this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the base in this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the sleeve in this utility model.

[0022] Figure 7 This is a three-dimensional structural diagram of the light source component in this utility model.

[0023] Figure 8 This is a three-dimensional structural schematic diagram of the lens component in this utility model.

[0024] The components and their numbers shown in the picture: Base 10, center hole 11, positioning plane 12, fourth connecting hole 13, mounting shell 20, accommodating cavity 21, mounting hole 22, first notch 23, first mounting part 28, first connecting hole 281, light source component 30, lamp bead 31, lamp board 33, wire notch 34, base 40, first through hole 41, limiting groove 42, bottom plate 45, protrusion 46, second notch 471, third notch 472, third mounting part 48, third connecting hole 481, sleeve 50, second mounting part 51, second connecting hole 52, limiting plate 60, second through hole 61, limiting bottom 62, boss 63, lens component 70, optical lens 71, support part 72, light source module, lens assembly 101. Detailed Implementation

[0025] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and embodiments, will provide a further detailed description. It should be understood that the specific embodiments described herein are configured only to explain this utility model and are not configured to limit it. For those skilled in the art, this utility model can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0027] It should be noted that all actions involving the acquisition of signals, information, or data in this utility model are carried out in compliance with the relevant data protection laws and regulations of the locality and with authorization from the owner of the corresponding device.

[0028] Example 1 like Figures 1 to 3 As shown, this embodiment provides a light source module, including: a base 10, a plurality of mounting shells 20, a plurality of light source components 30, a base 40, a sleeve 50, a limiting plate 60, and a lens component 70.

[0029] The base 10 is provided with a central hole 11 and a plurality of positioning planes 12, the plurality of positioning planes 12 being arranged around the central hole 11; The base 10 is used to support and position the light source module.

[0030] The normal of the positioning plane 12 is inclined toward the axis of the central hole 11. The direction of the normal of the positioning plane 12 is set according to the illumination requirements of the surgical microscope.

[0031] The normal of the positioning plane 12 is inclined toward the axis of the central hole 11, which is used to pre-set the incident geometry of near coaxiality with a small angle of oblique projection in the structure.

[0032] Several of the mounting shells 20 are provided with accommodating cavities 21 and mounting holes 22 that penetrate the accommodating cavities 21.

[0033] The mounting shell 20 is a fan-shaped shell assembled in a ring direction, with an internal accommodating cavity 21 that connects to the outer lens channel through the mounting hole 22; Several of the light source components 30 include lamp beads 31, and the light source components 30 are located in the accommodating cavity 21.

[0034] The light source component 30 is a light-emitting unit placed in the accommodating cavity 21, including a lamp board 33 and lamp beads 31.

[0035] The base 40 includes a first through hole 41, and a limiting groove 42 is provided on the side of the first through hole 41 facing away from the base 10. The bottom surface of the base 40 abuts against the positioning plane 12, and the bottom wall of the limiting groove 42 abuts against the bottom wall of the light source component 30. The bottom surface of the base 40 abuts against the positioning plane 12, and the bottom wall of the limiting groove 42 abuts against the bottom wall of the light source component 30 to limit the axial position.

[0036] The sleeve 50 is fitted outside the base 40, providing cylindrical surface guidance and light shielding.

[0037] The limiting plate 60 is provided with a second through hole 61, through which at least a portion of the lamp beads 31 protrude. The limiting plate 60 abuts against the light source component 30 on the side away from the base 40. The limiting plate 60 is provided with a second through hole 61 to allow the lamp beads 31 to pass through in a controlled manner and abut against the light source component 30 on the side away from the base 40 to form a front stop.

[0038] The lens component 70 includes an optical lens 71. The lens component 70 is mounted on the side of the limiting plate 60 facing away from the base 40, and the lens component 70 extends through the mounting hole 22. The lens component 70, mounted on the outside of the limiting plate 60 and extending outward through the mounting hole 22, forms an outgoing light window.

[0039] In this embodiment, the lens passes through the central hole 11, and several mounting shells 20 and light source components 30 are arranged around it. By using the inclined normal of the positioning plane 12, the light emitted from each sector is directed to the vicinity of the central axis, which geometrically achieves a compromise between near-coaxial illumination and small-angle oblique illumination, thereby reducing the shadow of obstruction and enhancing the contrast of surface texture. The first through hole 41 and the limiting groove 42 of the base 40 establish an axial hard limit from the lamp plate 33 to the lens. The bottom surface of the base 40 and the positioning plane 12 form a reliable surface support. The sleeve 50 and the limiting plate 60 together constrain the light path concentrically and limit the light. Thus, the axial distance and concentricity between the light source and the lens remain stable during assembly and stress changes, reducing the center drift of the light spot, bright rings and dark rings and color spots, and providing a stable entrance pupil illuminance field for subsequent automatic exposure and automatic focusing. In specific implementation, the number of positioning planes 12 can be configured as three to twelve according to the number of sectors, and the normal tilt angle can be selected within a small angle range according to the surgical field depth and glare control target; the mounting shell 20 can be a metal or engineering plastic sector-shaped part, and the shape of the accommodating cavity 21 and the size of the mounting hole 22 are matched according to the selected lens and lamp bead 31 encapsulation; this embodiment, without increasing the volume and assembly complexity, makes the relationship between the illumination optical path and the imaging optical axis stable for a long time, significantly improves the uniformity of surgical field illumination, significantly reduces glare and reflection spots, ensures the consistency of light spots and color uniformity, improves assembly repeatability and maintenance convenience, and the clear thermal path helps to reduce junction temperature and light decay, thereby continuously outputting clear and detailed imaging in the deep cavity of the oral cavity and high reflection environment and improving the stability and response consistency of automatic exposure and automatic focus.

[0040] like Figure 4 As shown, the mounting shell 20 has a first notch 23 on the side facing the central hole 11, and at least a portion of the sleeve 50 is exposed outside the first notch 23.

[0041] The first notch 23 is an opening window on the side of the mounting housing 20 facing the central hole 11, used to open a channel from one side of the optical axis to the interior of the mounting housing 20 within the circumferential sector. The sleeve 50 is a cylindrical component covering the outside of the base 40, serving the functions of light shielding, guiding, and concentric constraint. This structure partially opens the inner arc side of the mounting housing 20, directly exposing at least a section of the outer circle of the sleeve 50 to the outside of the notch, thereby bringing the concentric reference surface of the sleeve 50 to the side of the central hole 11, forming a directly accessible benchmark for easy inspection and assembly. This allows for direct observation and tool access to the concentricity and parallelism between the sleeve 50, the central hole 11, and the positioning plane 12 from the optical axis direction during assembly and maintenance, reducing measurement errors caused by lateral obstruction, and allowing axial pre-tightening, screw-locking, or micro-alignment on the optical side. This improves the accuracy of the axis distance and concentricity control between the lamp bead 31 and the lens, further reducing illuminance unevenness and glare caused by eccentricity and axis distance drift.

[0042] The outer wall of the mounting shell 20 is fan-shaped, and the plurality of mounting shells 20 are assembled into a ring. The first notch 23 is located on the inner side of the ring. The fan-shaped outer wall means that the outer contour of each mounting shell 20 is composed of an outer arc and two approximately radial side edges, which facilitates the arrangement of the shells at equally divided angles with the central hole 11 as the geometric reference. The assembly of the plurality of mounting shells 20 into a ring means that multiple fan-shaped shells are connected end to end along the circumference to form a concentric ring structure, so that the light emitted from each sector naturally points to the central axis. The first notch 23 is located on the inner side of the ring, indicating that the opening faces the central hole 11 and the lens side. When each sector meets the concentricity and angle conditions with the central hole 11, a near-coaxial ring illumination path can be obtained after the whole ring is formed. The inner notch also provides a detection and assembly window for the optical near-axis side, which facilitates direct observation and fine adjustment of the concentricity and axial distance between the sleeve 50 and the optical axis. Thus, the structure achieves a balance between near-coaxiality and small-angle oblique illumination, reduces shadows and glare, and stabilizes the illumination field. The number of mounting housings 20 can be six, corresponding to six light source components. In specific implementations, other numbers of mounting housings 20 and light source components can also be used, and there are no restrictions here.

[0043] like Figure 5 and Figure 6As shown, the base 40 is further provided with a base plate 45 and a protrusion 46. The protrusion 46 extends from the base plate 45 toward the light source component 30, and the diameter of the protrusion 46 is smaller than the diameter of the base plate 45. The sleeve 50 is fitted onto the outside of the protrusion 46 and abuts against the base plate 45. The base plate 45 is a disc-shaped bearing portion provided on the base 40, used to form surface support and force transmission with the base 10 or the positioning plane 12. The protrusion 46 is a sleeve-shaped axial structure extending from the base plate 45 toward the light source component 30, and its diameter is smaller than the diameter of the base plate 45, so as to form a stepped shoulder between the base plate 45 and the protrusion 46. In this embodiment, the radial and axial positioning are simultaneously solidified through the nested geometry of the base plate 45, the protrusion 46, and the sleeve 50: the base plate 45 provides a large surface area... The surface reference of the area bears the clamping force from the housing and the fastener. The protrusion 46 provides axial guidance and cylindrical surface reference. The sleeve 50 is fitted on its outer side and abuts against the end face of the base plate 45, so that the concentricity and axial distance of the optical path related components are established around this coaxial column system to establish a stable reference. Combined with the axial hard limit of the first through hole 41 and the limiting groove 42 of the base 40, the axial distance drift and eccentricity from the lamp plate 33 to the lens can be significantly reduced, thereby suppressing the bright spot, dark ring and uneven illumination, and improving the stability of automatic exposure and automatic focus.

[0044] like Figure 5 As shown, the limiting groove 42 is located in the protrusion 46. The aforementioned limiting groove 42 is an axial receiving space provided on the protrusion 46 and opening towards the base 10. Its bottom surface and sidewalls can serve as axial and radial positioning references for the lamp plate 33. The lamp plate 33 is a heat-conducting substrate that carries the lamp bead 31 and its driving circuit. It is usually an aluminum-based or copper-based metal core printed circuit board, or it can be a ceramic substrate. In this embodiment, the lamp plate 33 is partially embedded inside the protrusion 46: the bottom surface of the limiting groove 42 limits the axial height of the lamp plate 33, and the sidewalls of the limiting groove 42 restrict its radial and angular degrees of freedom, so that the lamp plate 33, the protrusion 46, the base plate 45, and the sleeve 50 form a coaxial integrated reference. Combining the stepped shoulder of the base plate 45 and the protrusion 46 with the cylindrical fit of the sleeve 50, the axial distance between the lamp plate 33 and the lens is stably and rigidly limited, and the concentricity and repeatability after assembly are significantly improved. The center drift of the light spot and the bright and dark rings are suppressed. At the same time, the groove wall forms a natural shield for the lateral overflow light, reducing stray light and glare.

[0045] like Figure 5As shown, in this embodiment, the sidewall of the groove is provided with an arc-shaped second notch 471 and a third notch 472, which are angularly offset in the circumferential direction. The second notch 471 and the third notch 472 are arc-shaped windows or clearance grooves opened on the sidewall of the groove, used to provide a passage for the assembly tool to enter; the angular offset in the circumferential direction means that the two notches are not on the same diameter line relative to the circumferential reference of the groove, but are distributed at a certain angle. This embodiment, by setting two arc-shaped notches on the sidewall of the groove and circumferentially offsetting them, disperses the influence of the opening of the sidewall to different angles, avoiding weakening the circumferential stiffness and light-blocking ability of the sidewall in the same position; at the same time, the two notches can also form an orientation reference and anti-rotation constraint with the mating notch or positioning post on the edge of the lamp plate 33, so that the lamp plate 33 obtains a clear angular positioning in the groove, thereby stabilizing the orientation of the light-emitting surface of the lamp plate 33 and its concentric relationship with the lens.

[0046] The limiting plate 60 includes a limiting bottom 62 and a boss 63. The boss 63 extends from the surface of the limiting bottom 62 in a direction away from the base 40, and the diameter of the boss 63 is smaller than that of the limiting bottom 62. Figure 8 As shown, the lens component 70 also includes a cylindrical support portion 72, which is connected to the limiting bottom 62 of the optical lens 71. At least a portion of the support portion 72 is embedded between the inner wall of the sleeve 50 and the outer wall of the boss 63.

[0047] Since the limiting plate 60 is composed of a limiting bottom 62 and a boss 63, with the boss 63 extending from the surface of the limiting bottom 62 of the limiting plate 60 away from the base 40 and the diameter of the boss 63 being smaller than the diameter of the limiting bottom 62, an annular step and a coaxial outer cylindrical reference are formed between them; the lens component 70, in addition to the optical lens 71, is provided with a cylindrical support part 72, which is fixedly connected to the lens limiting bottom 62 and coaxially inserted into the annular gap between the inner wall of the sleeve 50 and the outer wall of the boss 63 of the limiting plate 60, thereby achieving radial guidance and concentric constraint for the lens. Thus, the limiting plate 60 is responsible for establishing the geometric reference for the lens in the axial and radial directions, while the lens support part 72 completes self-centering and anti-tipping by using the inner circle of the sleeve 50 and the outer circle of the boss 63 as a double cylindrical track.

[0048] The limiting plate 60 forms a coaxial combination of a step and a cylinder, with the limiting bottom 62 and the boss 63. This allows the lens support 72 to be embedded and simultaneously fit against two concentric cylindrical surfaces, forming stable radial two-line support and circumferential constraint, significantly improving the concentricity of the lens relative to the base 40 and the optical axis. The step between the limiting bottom 62 and the boss 63 forms an axial stop with the end face or shoulder of the lens support 72. This, combined with the aforementioned hard limiting of the lamp plate 33 by the limiting groove 42 of the base 40, constitutes a short tolerance chain from the lamp plate 33 to the limiting plate 60 and then to the lens, stably controlling the axial distance from the LED to the lens and reducing spot center drift and bright / dark rings. At the same time, the support 72 is located in a narrow annular cavity between the inner wall of the sleeve 50 and the outer wall of the boss 63, forming a light-shielding channel to suppress side leakage and stray light from entering the imaging system, reducing glare and improving black levels and contrast.

[0049] In this embodiment, the accommodating cavity 21 of the mounting shell 20 is further provided with a first mounting part 28. The first mounting part 28 extends from the top of the mounting shell 20 toward the base 40. One side of the first mounting part 28 is connected to the inner wall of the mounting shell 20. The first mounting part 28 is located outside the mounting hole 22. A first connecting hole 281 is provided on the first mounting part 28. A second mounting part 51 is provided on the sleeve 50. A second connecting hole 52 is provided on the second mounting part 51. A third mounting part 48 is provided on the base 40. A third connecting hole 481 is provided on the third mounting part 48. A fourth connecting hole 13 is provided on the base 10. The first connecting hole 281, the second connecting hole 52, the third connecting hole 481 and the fourth connecting hole 13 are stacked sequentially toward the base 10. The connector passes through the first connecting hole 281, the second connecting hole 52, the third connecting hole 481 and the fourth connecting hole 13 in sequence.

[0050] The first mounting part 28 is a thickened load-bearing structure located within the accommodating cavity 21 of the mounting shell 20, extending from the top of the mounting shell 20 towards the base 40. One side of it is fixedly connected to the inner wall of the mounting shell 20 and located outside the mounting hole 22, providing rigid support for fastening on the near-optical axis side. The second mounting part 51 is a mating lug or annular boss 63 located on the sleeve 50, supporting the second connecting hole 52. The third mounting part 48 is located on the base 40, used to receive the clamping force from the upper component and transmit the force and positioning to the lower base 10. The fourth connecting hole 13 is formed on the base 10 as the final support reference for the entire device. The connecting member is a fastening component that passes through the above connecting holes along the optical axis, and can be a screw, stud with nut, or a positioning screw with a stepped shoulder. This embodiment. By sequentially stacking the first to fourth connecting holes 13 coaxially toward the base 10 and inserting the connectors from top to bottom, the first mounting part 28 of the mounting shell 20, the second mounting part 51 of the sleeve 50, the third mounting part 48 of the base 40, and the fourth connecting hole 13 of the base 10 are clamped together on the same axis at once, forming a single-link clamping and positioning along the optical axis. In this way, the relative positions of the key components of the optical path are defined by the same axial clamping chain and concentric hole system, which can effectively suppress the cumulative form and position errors caused by lateral multi-point locking, stabilize the concentricity and axial distance between the sleeve 50, the limiting plate 60, the lens component 70, and the lamp plate 33, and avoid axial drift and eccentricity caused by uneven force or thermal cycling, thereby improving the uniformity of illumination and reducing glare and bright and dark rings.

[0051] like Figure 7 As shown, the edges of the plurality of light source components 30 are provided with a plurality of wire-passing notches 34. In this embodiment, the wire-passing notches 34 refer to the openings arranged on the edges of the light source components 30 to guide the wire harness through, including power lines and signal lines on the lamp board 33. The light source components 30 are located in the receiving cavity 21 of the mounting housing 20 and face the central hole 11 to form a ring-shaped light distribution. If the wire harness crosses directly over the light-emitting area, it will block the light and introduce stray reflections. Therefore, a plurality of wire-passing notches 34 are provided on the lamp board 33 or its supporting edge, which, together with the groove of the base 40 and other circumferential notches, form an independent wiring path that does not interfere with the optical path and meets the minimum bending radius, so that power supply and signal output can be completed without changing the effective opening of the light-emitting surface.

[0052] Example 2 This embodiment provides a three-axis rotational damping autofocus microscope, including a lens assembly 101 and a light source module as described in Embodiment 1, wherein the end of the lens assembly 101 extends through the central hole 11 of the light source module.

[0053] The end of the lens assembly 101 extends through the central hole 11 of the light source module and is coaxially arranged with the axis of the central hole 11. The light source module is positioned by the assembly reference between its base 40 and the base 10 of the whole machine: the bottom surface of the base 40 is in contact with the surface of the positioning plane 12, and the limiting groove 42 abuts against the bottom wall of the light source component 30 to form an axial hard limit; the sleeve 50 is sleeved on the outside of the protrusion 46 and abuts against the end face of the base plate 45, and the boss 63 of the limiting plate 60 and the inner wall of the sleeve 50 together provide concentric cylindrical constraints for the support part 72 of the lens component 70. Several mounting shells 20 are assembled into a ring along the circumference, and the first notch 23 is located on the inner arc for near-axial assembly inspection and fastening operations; the lens component 70 is covered on the outside of the limiting plate 60 and extends through the mounting holes 22 of each mounting shell 20 to form an annular light outlet. During assembly, the first to fourth connecting holes 13 are used to clamp the first mounting part 28, the second mounting part 51, and the third mounting part 48 to the base 10 from top to bottom onto the same axis, completing the coaxial clamping and force closed loop between the light source module and the body. After the lens assembly 101 is inserted into the central hole 11, its outer circle and the central hole 11 form an additional concentric calibration reference, ultimately ensuring that the illumination optical path and the imaging optical axis remain geometrically consistent over a long period. To adapt to deep oral cavity scenarios, the normal of the positioning plane 12 is tilted inward at a small angle relative to the central axis. Multiple sector light sources, guided by this tilt angle, form a near-coaxial and slightly oblique illumination geometry, which weakens the hard shadows caused by instrument obstruction and enhances the surface texture contrast between the teeth and soft tissues.

[0054] The above description is merely a specific embodiment of this utility model. Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model.

Claims

1. A light source module, characterized in that, include: The base has a central hole and several positioning planes arranged around the central hole; Several mounting shells are provided with receiving cavities and mounting holes that penetrate the receiving cavities shown; A plurality of light source components, including lamp beads, are located in the accommodating cavity; The base includes a first through hole, a limiting groove is provided on the side of the first through hole facing away from the base, the bottom surface of the base abuts against the positioning plane, and the bottom wall of the limiting groove abuts against the bottom wall of the light source component. A sleeve, fitted over the base; The limiting plate is provided with a second through hole, through which at least a portion of the lamp beads pass. The limiting plate abuts against the light source component on the side away from the base. A lens component, including an optical lens, is mounted on the side of the limiting plate facing away from the base, and the lens component extends through the mounting hole; The normal to the positioning plane is inclined toward the axis of the central hole.

2. The light source module according to claim 1, characterized in that, The mounting housing has a first notch on the side facing the central hole, and at least a portion of the sleeve is exposed outside the first notch.

3. The light source module according to claim 2, characterized in that, The outer wall of the mounting shell is fan-shaped, and the plurality of mounting shells are assembled into a ring, with the first notch located on the inner side of the ring.

4. The light source module according to claim 3, characterized in that, The sidewall of the limiting groove is provided with an arc-shaped second notch and a third notch, which are offset at angular positions in the circumferential direction.

5. The light source module according to claim 3, characterized in that, The base is also provided with a base plate and a protrusion. The protrusion extends from the base plate toward the light source component. The diameter of the protrusion is smaller than the diameter of the base plate. The sleeve is fitted on the outside of the protrusion and abuts against the base plate.

6. The light source module according to claim 5, characterized in that, The limiting groove is located in the protrusion.

7. The light source module according to claim 1, characterized in that, The limiting plate includes a limiting bottom and a boss. The boss extends from the surface of the limiting bottom in a direction away from the base. The diameter of the boss is smaller than the diameter of the limiting bottom. The lens component also includes a cylindrical support portion. The support portion is connected to the limiting bottom of the optical lens. At least a portion of the support portion is embedded between the inner wall of the sleeve and the outer wall of the boss.

8. The light source module according to claim 1, characterized in that, The accommodating cavity of the mounting shell is further provided with a first mounting part, which extends from the top of the mounting shell toward the base. One side of the first mounting part is connected to the inner wall of the mounting shell. The first mounting part is located outside the mounting hole and is provided with a first connecting hole. The sleeve is provided with a second mounting part and is provided with a second connecting hole. The base is provided with a third mounting part and is provided with a third connecting hole. The foundation is provided with a fourth connecting hole. The first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole are stacked sequentially toward the foundation. The connector passes through the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole in sequence.

9. The light source module according to any one of claims 1 to 8, characterized in that, The edges of the plurality of light source components are provided with a plurality of wire-passing notches.

10. A three-axis rotationally damped autofocus microscope, characterized in that, It includes a lens assembly and a light source module according to any one of claims 1 to 9, wherein the end of the lens assembly extends through the central hole of the light source module.

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