Combined lens and medical lamp
By combining lens structures and lens designs, the problem of existing lenses being unable to form discontinuous light intensity distribution has been solved, achieving high-density light spot convergence and stray light elimination, thus improving the accuracy and reliability of surgical illumination.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHOU LEDLINK OPTICS
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-05
Smart Images
Figure CN224327054U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of optical lens technology, specifically relating to a combined lens and a medical lamp. Background Technology
[0002] The core function of medical lights is to create a highly concentrated and shadow-free lighting environment for deep surgical areas, enabling doctors to clearly observe the incision and the tiny, low-contrast tissue structures at different depths within the body cavity, providing stable visual support for delicate procedures.
[0003] However, existing lenses lack sufficient ability to converge the central light spot, failing to achieve the discontinuous light intensity distribution required for medical lighting—that is, a highly converged central light spot with rapidly attenuating peripheral light. This results in the following technical problems:
[0004] 1. Excessive dispersion of light energy prevents it from being fully concentrated on the target surgical area, making it difficult to achieve high-intensity illumination in the target surgical area, resulting in the effective illumination intensity of the surgical area failing to meet standard requirements;
[0005] Second, the light spot gradient is gentle, which produces significant peripheral stray light. After being reflected by surgical instruments, it will form interfering glare and reduce the visual contrast of the target object in the surgical area.
[0006] Third, the edges of the light spot are blurred. When multiple light sources are superimposed, an illuminance depression will be formed at the junction of adjacent lighting units. As the doctor moves the light spot, a dynamic penumbra will be formed in the depression area, which will affect the continuous and stable observation of deep tissues. Utility Model Content
[0007] The purpose of this invention is to provide a combined lens and medical lamp that solves the technical problem that the existing technology has insufficient ability to focus the central light spot and cannot form a discontinuous light intensity distribution.
[0008] In a first aspect, this utility model discloses a combined lens, comprising:
[0009] The cup body has a cup-shaped structure that is wider at the top and narrower at the bottom. A light-emitting hole is provided at the center of the upper end face of the cup body, and a first light-emitting surface is provided around the light-emitting hole. A light-entry hole is provided at the center of the lower end face of the cup body. The bottom of the light-entry hole protrudes outward from the center to form a first light-entry surface. A reflective surface is formed on the outer peripheral surface of the cup body.
[0010] A lens is embedded in the light-emitting hole. The top surface of the lens has a second light-emitting surface, and the bottom surface protrudes outward to the center to form a second light-incident surface. The first light-incident surface and the second light-incident surface are arranged along the optical axis.
[0011] This application embeds a lens inside the light-emitting hole of the cup body, thereby converging the originally scattered light through the first and second light-incident surfaces, thus focusing the central light spot and forming a discontinuous light intensity distribution. This can simultaneously meet the three major requirements of high-density focusing of the central light spot, strict control of stray light, and dynamic shadow elimination, thereby improving the accuracy and reliability of surgical lighting.
[0012] Based on the above technical solution, the solution of this application can be further improved as follows:
[0013] Preferably, a limiting annular groove is formed on the upper end surface of the cup body around the light outlet hole, and a positioning protrusion is provided on the outer periphery of the lens to match the limiting annular groove. The positioning protrusion is embedded in the limiting annular groove. This solution enhances the connection strength between the lens and the cup body, improves the overall structural stability of the lens, and ensures the stability of the optical performance of the lens during long-term use.
[0014] Preferably, the first light-emitting surface and / or the second light-emitting surface are composed of multiple regular hexagonal microlens units laid out in a honeycomb topology; by adopting this solution, light can be evenly distributed on the light-emitting surface, forming a more uniform light spot, thereby improving the lighting effect.
[0015] Preferably, the surface curvature radius of the microlens unit is 10mm to 12mm; this solution optimizes the divergence effect, improves optical performance, and ensures the feasibility of the manufacturing process and the stability of the structure.
[0016] Preferably, the inner wall of the light-emitting hole has a frustum-shaped structure with the upper base width greater than the lower base width; with this solution, the structure is relatively simple and stable, and it is easy to demold during injection molding, thus reducing manufacturing costs and processing difficulty.
[0017] Preferably, the bottom width of the light-emitting aperture is greater than the maximum radial width of the first light-incident surface; this solution avoids light obstruction and ensures the converging effect of the central light spot.
[0018] Preferably, the inner wall of the light inlet hole is an upwardly tapering annular curved surface; this design facilitates demolding during injection molding, reducing manufacturing costs and processing difficulty.
[0019] Preferably, the annular curved surface includes a straight section and a concave section along the axial direction. The straight section is close to the bottom of the light inlet aperture, and the concave section is close to the opening end of the light inlet aperture. By adopting this solution, the edge light rays can be deflected towards the central axis, which helps to form a more concentrated and uniform light pattern, reduces the generation of stray light, and improves the utilization rate of light and the lighting effect.
[0020] Preferably, the outer edge of the upper end face of the cup body is provided with a supporting ring surface surrounding the first light-emitting surface, and the light-emitting hole, the first light-emitting surface and the supporting ring surface are coaxially arranged; adopting this solution provides a stable supporting surface, ensuring the stability and reliability of the lens during use, and also reducing light scattering or loss caused by structural offset or misalignment.
[0021] Secondly, this utility model discloses a medical lamp, comprising: the combined lens described in any one of the above claims.
[0022] Through the above technical solution, this utility model achieves the following beneficial effects:
[0023] 1. This application embeds a lens in the light outlet hole of the cup body, thereby collecting and converging the originally scattered light through the first light-incident surface and the second light-incident surface, thus converging the central light spot and forming a discontinuous light intensity distribution. This can simultaneously meet the three major requirements of high-density convergence of the central light spot, strict convergence of stray light and dynamic shadow elimination, thereby improving the accuracy and reliability of surgical lighting.
[0024] 2. By making the first light-emitting surface and / or the second light-emitting surface consist of multiple regular hexagonal microlens units laid out in a honeycomb topology, the light can be evenly distributed on the light-emitting surface, forming a more uniform light spot, thereby improving the lighting effect;
[0025] 3. This application utilizes the concave section to deflect edge light rays towards the central axis, thereby helping to form a more concentrated and uniform light pattern, reducing stray light generation, and improving light utilization and illumination effect. Attached Figure Description
[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0027] Figure 1 This is a front cross-sectional view of the combined lens described in a specific embodiment of this application;
[0028] Figure 2 for Figure 1 Front sectional view of the cup body in the combined lens shown;
[0029] Figure 3 for Figure 1 A front view cross-sectional view of the lens in the combined lens shown;
[0030] Figure 4 for Figure 2 A three-dimensional view of the cup shown;
[0031] Figure 5 for Figure 2 A three-dimensional view of the cup shown;
[0032] Figure 6 for Figure 3 A three-dimensional view of the lens shown;
[0033] Figure 7 for Figure 1 A schematic diagram of the illumination of the combined lens shown;
[0034] Explanation of reference numerals in the attached figures:
[0035] 1. Cup body; 11. Light emission aperture; 12. First light emission surface; 13. Light entrance aperture; 131. First light entrance surface; 132. Annular curved surface; 132a. Straight section; 132b. Concave section; 14. Reflective surface; 15. Limiting annular groove; 16. Supporting annular surface;
[0036] 2. Lens; 21. Second light-emitting surface; 22. Second light-receiving surface; 23. Positioning convex ring. Detailed Implementation
[0037] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0038] The terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as “first” or “second” may explicitly or implicitly include one or more of the stated features.
[0039] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0040] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.
[0041] Example 1:
[0042] like Figures 1 to 7As shown in the embodiment of this application, a combined lens is disclosed for converging originally scattered light and focusing the central light spot to form a discontinuous light intensity distribution required for medical lighting; the specific structure includes: a cup body 1 and a lens 2, which can be made of transparent materials such as silicone, acrylic, polycarbonate or glass, without specific limitation.
[0043] The cup body 1 has a cup-shaped structure that is wider at the top and narrower at the bottom, preferably a truncated parabolic cone with rotational symmetry. A light-emitting hole 11 is provided at the center of the upper end face of the cup body 1, and a first light-emitting surface 12 is provided around the light-emitting hole 11. A light-entry hole 13 is provided at the center of the lower end face of the cup body 1. The bottom of the light-entry hole 13 protrudes outward from the center to form a first light-entry surface 131. A reflective surface 14 is formed on the outer peripheral surface of the cup body 1.
[0044] The lens 2 is embedded in the light-emitting hole 11, and is preferably installed by ultrasonic welding. The top surface of the lens 2 has a second light-emitting surface 21, and the bottom surface protrudes outward to form a second light-incident surface 22. The first light-incident surface 131 and the second light-incident surface 22 are arranged with the same optical axis so that the light rays converged from the first light-incident surface 131 can smoothly enter the second light-incident surface 22 for further convergence.
[0045] This invention embeds a lens 2 inside the light outlet 11 of the cup body 1, thereby converging the originally scattered light through the first light-incident surface 131 and the second light-incident surface 22, thus focusing the central light spot and forming a discontinuous light intensity distribution. This can simultaneously meet the three major requirements of high-density focusing of the central light spot, strict control of stray light, and dynamic shadow elimination, thereby improving the accuracy and reliability of surgical lighting.
[0046] In some embodiments, such as Figures 2-6 As shown, a limiting ring groove 15 is formed on the upper surface of the cup body 1 around the light outlet hole 11. It is used as a positioning and installation reference for the lens 2, providing a precise installation position, ensuring the accurate relative position of the two, and guaranteeing the stability and consistency of the lens 2 assembly. The outer periphery of the lens 2 is provided with a positioning protrusion 23 that matches the limiting ring groove 15. The positioning protrusion 23 is embedded in the limiting ring groove 15, realizing the positioning and fixing of the lens 2 on the cup body 1.
[0047] The above settings enhance the connection strength between lens 2 and cup 1, improve the overall structural stability of the lens, and ensure the stable optical performance of the lens during long-term use.
[0048] In some embodiments, such as Figure 4 and Figure 6 As shown, the first light-emitting surface 12 and / or the second light-emitting surface 21 are composed of multiple regular hexagonal microlens units laid out in a honeycomb topology.
[0049] It should be noted that when multiple regular hexagonal microlens units are laid out in a honeycomb topology, adjacent units can be seamlessly spliced together without gaps or overlapping areas, thus ensuring the continuity and integrity of the light-emitting surface.
[0050] The above settings allow for a uniform distribution of light on the light-emitting surface, creating a more uniform light spot and thus improving the lighting effect.
[0051] Based on the above embodiments, the surface curvature radius of the microlens unit is 10mm to 12mm, which optimizes the divergence effect, improves optical performance, and also ensures the feasibility of the manufacturing process and the stability of the structure.
[0052] In some embodiments, such as Figure 2 As shown, the inner wall of the light-emitting hole 11 has a frustum-shaped structure with the upper base width greater than the lower base width. Its structure is relatively simple and stable, and it is easy to demold during the injection molding process, which reduces manufacturing costs and processing difficulty.
[0053] Based on the above embodiments, such as Figure 2 As shown, the bottom width of the light exit aperture 11 is greater than the maximum radial width of the first light incident surface 131.
[0054] The above-mentioned dimensional design ensures that the light rays converged from the first light-incident surface 131 can smoothly enter the light-out aperture 11 and continue to be transmitted towards the lens 2, thereby avoiding the light rays from being blocked and ensuring the converging effect of the central light spot.
[0055] In some embodiments, such as Figure 2 As shown, the inner wall of the light inlet hole 13 is an upwardly tapering annular curved surface 132, which is easy to demold during injection molding, reducing manufacturing costs and processing difficulty.
[0056] Based on the above embodiments, such as Figure 2 As shown, the annular curved surface 132 includes a straight section 132a and a concave section 132b along the axial direction. The straight section 132a is close to the bottom of the light inlet hole 13, and the concave section 132b is close to the opening end of the light inlet hole 13.
[0057] With the above configuration, the concave section 132b can deflect the edge light rays towards the central axis, thereby helping to form a more concentrated and uniform light pattern, reducing stray light generation, and improving light utilization and illumination effect.
[0058] In some embodiments, such as Figure 4 As shown, the outer edge of the upper end face of the cup body 1 is provided with a support ring surface 16 surrounding the first light-emitting surface 12, and the light-emitting hole 11, the first light-emitting surface 12 and the support ring surface 16 are coaxially arranged.
[0059] The above setup provides a stable support surface for the cup body 1, ensuring the stability and reliability of the lens during use, and also reducing light scattering or loss caused by structural offset or misalignment.
[0060] Further explanation regarding this application:
[0061] When using, such as Figure 7 As shown, a light source is arranged in the light entrance aperture 13, and light is emitted from the light source;
[0062] A portion of the light rays directed towards the top side enter the light-emitting aperture 11 after being converged by the first light-incident surface 131, and then are further converged by the second light-emitting surface 21 before being released to the outside, finally illuminating the target area.
[0063] A portion of the light rays emanating from the center and surrounding areas are scattered to the reflective surface 14 after passing through the internal medium of the cup body 1. After being reflected by the reflective surface 14, the light rays are released to the outside from the first light-emitting surface 12 and finally illuminate the target area.
[0064] A portion of the light rays directed towards the bottom perimeter are refracted by the concave section 132b and then deflected towards the central axis. After passing through the internal medium of the cup body 1, they are scattered to the reflective surface 14. After being reflected by the reflective surface 14, they are released to the outside from the first light-emitting surface 12 and finally illuminate the target area.
[0065] Example 2:
[0066] This application discloses a medical lamp, including the combined lens of Embodiment 1.
[0067] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A composite lens, characterized in that, include: The cup body has a cup-shaped structure that is wider at the top and narrower at the bottom. A light-emitting hole is provided at the center of the upper end face of the cup body, and a first light-emitting surface is provided around the light-emitting hole. A light-entry hole is provided at the center of the lower end face of the cup body. The bottom of the light-entry hole protrudes outward from the center to form a first light-entry surface. A reflective surface is formed on the outer peripheral surface of the cup body. A lens is embedded in the light-emitting hole. The top surface of the lens has a second light-emitting surface, and the bottom surface protrudes outward to the center to form a second light-incident surface. The first light-incident surface and the second light-incident surface are arranged along the optical axis.
2. The combined lens according to claim 1, characterized in that, The upper end face of the cup body has a limiting ring groove on the outer periphery of the light outlet hole, and the outer periphery of the lens is provided with a positioning protrusion that matches the limiting ring groove. The positioning protrusion is embedded in the limiting ring groove.
3. The combined lens according to claim 1, characterized in that, The first light-emitting surface and / or the second light-emitting surface are composed of multiple regular hexagonal microlens units laid out in a honeycomb topology.
4. The combined lens according to claim 3, characterized in that, The surface curvature radius of the microlens unit is 10mm to 12mm.
5. The combined lens according to claim 1, characterized in that, The inner wall of the light-emitting aperture has a frustum-shaped structure with the upper base width greater than the lower base width.
6. The combined lens according to claim 5, characterized in that, The bottom width of the light-emitting aperture is greater than the maximum radial width of the first light-incident surface.
7. The combined lens according to claim 1, characterized in that, The inner wall of the light inlet aperture is an annular curved surface that tapers upwards.
8. The combined lens according to claim 7, characterized in that, The annular curved surface includes a straight section and a concave section along the axial direction. The straight section is close to the bottom of the light inlet aperture, and the concave section is close to the opening end of the light inlet aperture.
9. The combined lens according to claim 1, characterized in that, The outer edge of the upper end face of the cup body is provided with a supporting ring surface that surrounds the first light-emitting surface, and the light-emitting hole, the first light-emitting surface and the supporting ring surface are coaxially arranged.
10. A medical lamp, characterized in that, Includes the combined lens as described in any one of claims 1-9.