Light adjusting device and optical instrument
Through the combined use of light adjustment devices, the spot overflow and irradiance problems of the blue light treatment module are solved, efficient use of light and clear edges of spots, and visual comfort is improved.
Patent Information
- Application Number
- CN202421760007.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-24
AI Technical Summary
In the prior art, the spot overflow of the blue light treatment module is large, the irradiance uniformity of the treatment surface is poor, the light energy utilization rate is low, and the spot boundary is not clear, which can easily lead to glare and visual fatigue.
The light adjustment device is adopted, including a light emission module, a first adjustment module and a second adjustment module. By reducing the light out angle of light by primary and secondary, a planar lens and a free curved lens are combined to form a light spot with an edge controllable edge.
Reduce light overflow, improve light utilization, enhance the irradiance uniformity of the treatment surface, form clear edges of spots, reduce glare, and improve visual comfort.
Smart Images
Figure CN223143975U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of light adjustment, and particularly to a light adjustment device and an optical instrument. Background Art
[0002] Currently, more and more blue light treatment modules are integrated into other baby instruments on the market. Since the distance from the blue light emission to the treatment surface increases, the light angle on the treatment surface becomes smaller, resulting in problems such as a large amount of light spot overflowing the treatment surface and poor irradiance uniformity on the treatment surface.
[0003] In related technologies, most blue light optical solutions use multi-planoconvex lens solutions and single free-form lens solutions. Neither of these two solutions can well be compatible with and achieve the light collection function and the light energy distribution function. When using the free-form single lens optical module optical solution, a large angle of blue light cannot be utilized, and a large amount of blue light overflows the treatment surface and even the bed surface, causing light pollution and low energy utilization rate. When using a planoconvex lens, multiple lenses need to be combined into a single module, and often a light mixing rod is required for light mixing. The irradiance uniformity on the treatment surface is still not as good as that of the free-form lens. At the same time, the spot boundary of the traditional blue light optical solution is not clear enough, and even the spot edge is too astigmatic, which is likely to cause glare to the user and lead to visual fatigue at work.
[0004] Therefore, how to reduce the amount of light overflow and make the light spot formed by the light match the size of the receiving surface is an urgent problem to be solved. Summary of the Utility Model
[0005] Embodiments of this application provide a light adjustment device and an optical instrument.
[0006] In a first aspect, the light adjustment device includes a light emission module for emitting light;
[0007] A first adjustment module that reduces the light emission angle of the light emitted by the light emission module once and then emits it;
[0008] A second adjustment module that receives the light once reduced by the first adjustment module and then reduces the light a second time and emits it, so as to form a light spot with controllable edges on the receiving surface;
[0009] The light emission module, the first adjustment module, and the second adjustment module are arranged at intervals, and the light emitting center point of the light emission module is located on the central axis of the first adjustment module and the second adjustment module.
[0010] In some embodiments of this application, the first adjustment module includes a planoconvex lens, and the planoconvex lens includes a first optical surface, a second optical surface, and a first circumferential surface connecting the two;
[0011] The first optical surface and the second optical surface receive the light emitted by the light emission module and reduce the light output angle; the first optical surface is located on the side close to the light emission module, the second optical surface is located on the side facing away from the light emission module, and the first circumferential surface surrounds the central axis to form a circumferential surface;
[0012] The first optical surface is a curved surface with the middle protruding away from the first reference surface, and the second optical surface is also a curved surface with the middle protruding away from the first reference surface; the first reference surface is the light-emitting surface where the light emission module emits light, and the first reference surface is perpendicular to the central axis.
[0013] In some embodiments of the present application, the curvature range of the first optical surface is -100 to -1, and the curvature range of the second optical surface is 1 to 100.
[0014] In some embodiments of the present application, the distance range between the first optical surface and the light-emitting surface of the light emission module is 2 mm to 8 mm.
[0015] In some embodiments of the present application, the second adjustment module includes a free-form lens, which includes a third optical surface, a fourth optical surface, and a second circumferential surface connecting the two. The third optical surface and the fourth optical surface are used to perform secondary reduction on the light that has been reduced once by the first adjustment module and form a spot with controllable edges on the receiving surface;
[0016] The third optical surface is close to the first adjustment module, the fourth optical surface is facing away from the first adjustment module, and the second circumferential surface surrounds the central axis to form a circumferential surface;
[0017] The third optical surface has a rotary conical curved surface structure. The third optical surface has a vertex on the central axis, and the generatrix of the third optical surface is a curve. Along the direction from the vertex to the second reference surface, the curvature of the middle of the generatrix of the third optical surface is greater than that of both sides, so that the third optical surface forms a depression towards the direction close to the second reference surface;
[0018] The fourth optical surface is a curved surface with the middle protruding away from the second reference surface;
[0019] Wherein, the second reference surface is a plane perpendicular to the central axis and intersecting the second circumferential surface. Along the direction of the central axis, the second reference surface is located between the third optical surface and the fourth optical surface.
[0020] In some embodiments of the present application, the projections of the third optical surface, the fourth optical surface, and the second circumferential surface on the second reference surface are all elliptical. The projection size of the fourth optical surface on the second reference surface is larger than the projection size of the third optical surface on the second reference surface, and the projection size of the third optical surface on the second reference surface is larger than the projection size of the second optical surface on the second reference surface.
[0021] In some embodiments of the present application, the cross-sections of the second circumferential surface and the fourth optical surface along a plane parallel to the second reference surface are both elliptical cross-sections. The fourth optical surface includes two transition surfaces located at the endpoints of the minor axis of the elliptical cross-section and extending towards the second reference surface.
[0022] In some embodiments of the present application, the distance between the third optical surface and the second optical surface ranges from 3 mm to 10 mm.
[0023] In some embodiments of the present application, the light-emitting module includes a lamp bead whose provided light source is a Lambert source, and the light emitted by the lamp bead is blue light with therapeutic properties.
[0024] In some embodiments of the present application, the edge-controllable light spot formed by the second adjustment module is used to be projected onto the receiving surface, and a therapeutic light surface is formed on the receiving surface for a predetermined target. The range of the light-emitting angle between the edge of the therapeutic light surface and the central axis is 20° to 70°; the shape of the receiving surface includes a rectangle, an ellipse, a square, and a circle.
[0025] In a second aspect, the present application provides an optical instrument, including the light ray adjustment device according to any one of the above first aspects.
[0026] In the light ray adjustment device and the optical instrument of the embodiments of the present application, first, the light-emitting angle of the light ray is reduced once by the first adjustment module, and then the light ray is emitted after being reduced a second time by the second adjustment module. The first adjustment module and the second adjustment module cooperate with each other to achieve the function of light ray collection and the function of balanced light energy distribution. An edge-controllable light spot can be formed on the receiving surface. At the same time, the irradiance uniformity of the treatment surface is relatively good, the light spot formed by the light ray matches the size of the receiving surface, the light ray overflow amount can be controlled, and the light ray utilization efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.
[0028] Figure 1 is the overall structural schematic diagram of the light ray adjustment device provided by the embodiment of the present application;
[0029] Figure 2 is the schematic diagram of the light ray distribution when the light ray adjustment device in the embodiment of the present application is in use;
[0030] Figure 3 is the schematic diagram of the light ray emitted from the second adjustment module in the embodiment of the present application;
[0031] Figure 4 It is a schematic diagram of the elliptical light spot formed by the light adjustment device in the embodiment of the present application.
[0032] 1. Light emission module; 11. Lamp bead; 2. First adjustment module; 21. Plano-convex lens; 211. First optical surface; 212. Second optical surface; 213. First circumferential surface; 3. Second adjustment module; 31. Free-form surface lens; 311. Third optical surface; 312. Fourth optical surface; 3121. Transition surface; 313. Second circumferential surface; α. Central axis; β. First reference plane; γ. Second reference plane. Specific embodiments
[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.
[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.
[0035] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0036] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.
[0037] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure of this application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit this application. In addition, this application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.
[0038] Specifically, please refer to Figures 1 to 4 , this application provides a light adjusting device and an optical instrument. The light adjusting device includes a light emitting module 1 for emitting light; a first adjusting module 2 for reducing the light emitting angle of the light emitted by the light emitting module 1 once and then emitting it; a second adjusting module 3 for receiving the light reduced once by the first adjusting module 2 and reducing the light again and then emitting it, so as to form a spot with controllable edges on the receiving surface; wherein, the light emitting module 1, the first adjusting module 2 and the second adjusting module 3 are arranged at intervals, and the light emitting center point of the light emitting module 1 is located on the central axis α of the first adjusting module 2 and the second adjusting module 3.
[0039] In the light adjusting device in the embodiment of this application, first, the first adjusting module 2 reduces the light emitting angle of the light once, and then after the second adjusting module 3 reduces it again, the light is emitted. The first adjusting module 2 and the second adjusting module 3 cooperate with each other to achieve the functions of light collection and uniform light energy distribution. A spot with controllable edges can be formed on the receiving surface. At the same time, the irradiance uniformity of the treatment surface is relatively good, the spot formed by the light matches the size of the receiving surface, the light overflow can be controlled, and the light utilization efficiency can be improved.
[0040] It should be noted that when the light adjustment device in the present application is applied to the blue light therapy program, the light emitting module 1 includes a lamp bead 11 whose light source is a Lambertian light source, and the light emitted by the lamp bead 11 is blue light with therapeutic properties; at this time, the first adjustment module 2 reduces the blue light once to realize the function of collecting blue light; the second adjustment module 3 can continue to adjust the light energy distribution of the blue light after the first reduction, and emit the light relatively evenly to the receiving surface, thereby forming a light spot with controllable edges, and forming a therapeutic light surface for the predetermined target on the receiving surface.
[0041] In some embodiments, the first adjustment module 2 includes a plano-convex lens 21, and the plano-convex lens 21 includes a first optical surface 211, a second optical surface 212, and a first peripheral surface 213 connected therebetween; Figure 2 As shown, the first optical surface 211 and the second optical surface 212 receive the light emitted by the light emitting module 1 and reduce the light emission angle; the first optical surface 211 is located on the side close to the light emitting module 1, the second optical surface 212 is located on the side away from the light emitting module 1, and the first circumferential surface 213 forms a circular surface around the central axis α.
[0042] In order to achieve the function of collecting blue light and reduce the emission angle of the light from the lamp bead 11, the first optical surface 211 is a curved surface with the middle part convex toward the direction away from the first reference plane β, and the second optical surface 212 is also a curved surface with the middle part convex toward the direction away from the first reference plane β; wherein the first reference plane β is the light-emitting surface where the light emitting module 1 emits light, and the first reference plane β is perpendicular to the central axis α.
[0043] Obviously, the curvature of the second optical surface 212 should be greater than that of the first optical surface 211 . In some embodiments, the curvature of the first optical surface 211 ranges from -100 to -1, and the curvature of the second optical surface 212 ranges from 1 to 100.
[0044] In addition, in order to improve the light collecting performance of the first adjustment module 2 for reducing the blue light, in some embodiments, the plano-convex lens 21 can be made of a material with a relatively large refractive index, thereby increasing the light collecting effect.
[0045] In some embodiments, the second adjustment module 3 includes a free-form surface lens 31, and the free-form surface lens 31 includes a third optical surface 311, a fourth optical surface 312, and a second peripheral surface 313 connected therebetween. Figure 2 and Figure 3 As shown, the third optical surface 311 and the fourth optical surface 312 are used to perform secondary reduction on the light that has been reduced once by the first adjustment module 2, and continue to adjust the light energy distribution of the blue light that has been reduced once, and form a light spot with controllable edges on the receiving surface.
[0046] Specifically, the third optical surface 311 is close to the first adjustment module 2, the fourth optical surface 312 faces away from the first adjustment module 2, and the second circumferential surface 313 surrounds the central axis α to form a circumferential surface; the third optical surface 311 has a rotary conical curved surface structure, the third optical surface 311 has a vertex located on the central axis α, the generatrix of the third optical surface 311 is a curve, and along the direction from the vertex to the second reference plane γ, the curvature of the middle part of the generatrix of the third optical surface 311 is greater than that of both sides, so that the third optical surface 311 forms a depression in the direction close to the second reference plane γ; the fourth optical surface 312 is a curved surface convex in the direction away from the second reference plane γ in the middle, and the degree of curvature of the fourth optical surface 312 is also greater than that of the third optical surface 311, so that after the light rays reduced once pass through the third optical surface 311 and the fourth optical surface 312, they can be emitted more gently and the edge of the light spot can be controlled.
[0047] Wherein, the second reference plane γ is a plane perpendicular to the central axis α and intersecting with the second circumferential surface 313, and along the direction of the central axis α, the second reference plane γ is located between the third optical surface 311 and the fourth optical surface 312.
[0048] The light ray adjusting device in the present application is applied to baby instruments. For example, when used for treating neonatal jaundice, in order to improve the adaptability of the light spot formed by the second adjustment module 3 to the treatment site required by the baby, the shape of the receiving surface may include but is not limited to unspecified shapes such as rectangles, ellipses, squares, circles, etc. The range of the light-emitting angle between the edge of the treatment light surface and the central axis α is 20° to 70°. At the same time, as Figure 4 shown, the shape of the light spot formed by the second adjustment module is an ellipse to adapt to the above different receiving surface shapes.
[0049] Therefore, in order to make the shape of the light spot formed by the second adjustment module be the Figure 4 ellipse shown, in some embodiments, the cross-sections of the third optical surface 311, the fourth optical surface 312 and the second circumferential surface 313 along the plane parallel to the second reference plane γ are all elliptical cross-sections, that is, the projections of the third optical surface 311, the fourth optical surface 312 and the second circumferential surface 313 on the second reference plane γ are all elliptical. At the same time, since the farther the distance from the lamp bead 11 is, the larger the light spot formed by the light rays in space is, therefore, the projection size of the fourth optical surface 312 on the second reference plane γ is greater than the projection size of the third optical surface 311 on the second reference plane γ, and the projection size of the third optical surface 311 on the second reference plane γ is greater than the projection size of the second optical surface 212 on the second reference plane γ.
[0050] In some embodiments, the fourth optical surface 312 further includes two transition curved surfaces 3121, and the two transition curved surfaces 3121 are located at the short-axis endpoints of the elliptical cross-section and extend towards the second reference plane γ.
[0051] It should also be noted that the light rays emitted from the plano-convex lens 21 need to pass through the free-form surface lens 31 to direct the light rays in each direction to the corresponding positions on the receiving surface. In this process, since the distances from different receiving positions to the lamp bead 11 are different, the energy at each position needs to be obtained through the energy calculation formula I = E * d2 (where I is the point light intensity, E is the point illuminance, and d is the irradiation distance). In order to improve the uniformity of the above light energy distribution and enhance the spot effect formed by the free-form surface lens 31, in some embodiments, the distance range between the first optical surface 211 and the light-emitting surface of the light-emitting module 1 is 2 mm to 8 mm, and the distance range between the third optical surface 311 and the second optical surface 212 is 3 mm to 10 mm. By controlling the above distances, the uniformity of the light energy distribution and the spot irradiance is improved, and the blue light spillage amount is reduced or even avoided, thereby improving the utilization rate of the blue light energy.
[0052] This application also provides an optical instrument, including the light ray adjusting device in any of the above embodiments.
[0053] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0054] The above has introduced in detail a light ray adjusting device and an optical instrument provided by the embodiments of this application. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the technical solution and its core idea of this application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A light adjustment device, characterized in that, Including: A light emission module (1) for emitting light; A first adjustment module (2) that reduces the light emission angle of the light emitted by the light emission module (1) once and then emits it; A second adjustment module (3) that receives the light reduced once by the first adjustment module (2), and reduces the light again and then emits it, so as to form a spot with controllable edges on the receiving surface; The light emission module (1), the first adjustment module (2), and the second adjustment module (3) are arranged at intervals, and the light-emitting center point of the light emission module (1) is located on the central axis (α) of the first adjustment module (2) and the second adjustment module (3).
2. The light adjusting device according to claim 1, wherein, The first adjustment module (2) includes a plano-convex lens (21), and the plano-convex lens (21) includes a first optical surface (211), a second optical surface (212), and a first circumferential surface (213) connecting the two; The first optical surface (211) and the second optical surface (212) receive the light emitted by the light emission module (1) and reduce the light emission angle of the light; the first optical surface (211) is located on the side close to the light emission module (1), the second optical surface (212) is located on the side away from the light emission module (1), and the first circumferential surface (213) forms a circumferential surface around the central axis (α); The first optical surface (211) is a curved surface convex in the direction away from the first reference plane (β) in the middle, and the second optical surface (212) is also a curved surface convex in the direction away from the first reference plane (β) in the middle; the first reference plane (β) is the light-emitting surface where the light emission module (1) emits light, and the first reference plane (β) is perpendicular to the central axis (α).
3. The light adjusting device according to claim 2, wherein The curvature range of the first optical surface (211) is -100 to -1, and the curvature range of the second optical surface (212) is 1 to 100.
4. The light adjusting device according to any one of claims 2-3, characterized in that The distance range between the first optical surface (211) and the light-emitting surface of the light emission module (1) is 2 mm to 8 mm.
5. The light adjusting device according to claim 4, characterized in that, The second adjustment module (3) includes a free-form lens (31), and the free-form lens (31) includes a third optical surface (311), a fourth optical surface (312), and a second circumferential surface (313) connecting the two. The third optical surface (311) and the fourth optical surface (312) are used to reduce the light reduced once by the first adjustment module (2) again and form the spot with controllable edges on the receiving surface; The third optical surface (311) is close to the first adjustment module (2), the fourth optical surface (312) is away from the first adjustment module (2), and the second circumferential surface (313) forms a circumferential surface around the central axis (α); The third optical surface (311) is in the structure of a rotating conical curved surface. The third optical surface (311) has a vertex located on the central axis (α). The generatrix of the third optical surface (311) is a curve. Along the direction from the vertex to the second reference plane (γ), the curvature of the middle part of the generatrix of the third optical surface (311) is greater than that of the two sides, so that the third optical surface (311) forms a depression in the direction close to the second reference plane (γ). The fourth optical surface (312) is a curved surface that bulges in the direction away from the second reference plane (γ) in the middle. Wherein, the second reference plane (γ) is a plane perpendicular to the central axis (α) and intersecting with the second peripheral surface (313). Along the direction of the central axis (α), the second reference plane (γ) is located between the third optical surface (311) and the fourth optical surface (312).
6. The light adjusting device according to claim 5, characterized in that, The projections of the third optical surface (311), the fourth optical surface (312) and the second peripheral surface (313) on the second reference plane (γ) are all elliptical. The projection size of the fourth optical surface (312) on the second reference plane (γ) is larger than the projection size of the third optical surface (311) on the second reference plane (γ), and the projection size of the third optical surface (311) on the second reference plane (γ) is larger than the projection size of the second optical surface (212) on the second reference plane (γ).
7. The light adjusting device according to claim 6, wherein The second peripheral surface (313) and the fourth optical surface (312) are both elliptical cross-sections along the section parallel to the second reference plane (γ). The fourth optical surface (312) includes two transition surfaces (3121), and the two transition surfaces (3121) are located at the short-axis endpoints of the elliptical cross-section and extend towards the second reference plane (γ).
8. The light adjusting device according to any one of claims 5-7, characterized in that, The distance range between the third optical surface (311) and the second optical surface (212) is 3 mm to 10 mm.
9. The light adjustment device according to claim 1, wherein, The light-emitting module (1) includes a lamp bead (11) whose provided light source is a Lambert source, and the light emitted by the lamp bead (11) is blue light with therapeutic performance.
10. An optical instrument, comprising the light ray adjusting device according to any one of claims 1 to 9.