Optical assembly for low-glare illumination and lamp thereof

Abstract

The invention provides an optical assembly which comprises a light source, a first optical element and a second optical element which are arranged in sequence, and the light source comprises a light-emitting chip and an optical axis; the first optical element is provided with a first cavity for accommodating the light-emitting chip close to the light source, the surface of the first cavity is suitable for light rays of the light source to pass through and comprises a first incident surface and a second incident surface, the first incident surface is arranged on the outer side of the optical axis in the radial direction, the second incident surface is arranged to seal the first incident surface, and the outer side of the first optical element comprises a first light guide part; the first light guide part receives all light from the first light incident surface and the second light incident surface and guides the light to the second optical element; the inner side of the second optical element is connected with the first optical element, the second optical element comprises an inner reflection part wound around the outer side of the first optical element and a second light guide part arranged at the end away from the light source, the second light guide part is connected to the end of the inner reflection part, and the inner reflection part reflects light emitted by the first light guide part and then guides the light to the second light guide part.

Description

Technical Field

[0001] The present application relates to the field of lamps, and in particular to an optical component for low-glare lighting and a lamp thereof. Background Art

[0002] With the advancement of science and technology, people's quality of life is getting higher and higher. At the same time, with the increasing maturity of LED technology and the lighting market, the lighting fixture market has gradually been segmented into professional lighting fields such as smart lighting, circulation lighting, commercial lighting, office lighting, and home lighting.

[0003] For LED lamps currently on the market, the light emitted by the LED chip has a certain intensity. If it is emitted directly outside the lamp, or if the local light intensity is too high due to poor lighting uniformity, people looking directly at the lamp, such as standing under the lamp and looking up at the lamp, will cause glare, thereby affecting the comfort of the human eye.

[0004] Therefore, those skilled in the art are committed to developing an optical component and a lamp thereof for low-glare lighting, so as to improve the eye comfort of users. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this application is the glare problem caused by the direct light emitted by the existing lamps.

[0006] To achieve the above-mentioned objectives, the first aspect of the present application provides an optical component, comprising a light source, a first optical element, and a second optical element arranged in sequence, wherein the light source comprises a light-emitting chip and an optical axis, and the light-emitting chip passes through the optical axis; a first cavity for accommodating the light-emitting chip is provided on the side of the first optical element close to the light source, the surface of the first cavity is suitable for the light from the light source to pass through and comprises a first light incident surface and a second light incident surface, the first light incident surface is radially arranged outside the optical axis, the second light incident surface is arranged to close the end of the first light incident surface away from the light source and intersect with the optical axis, the first optical element comprises a first light guiding portion relative to the outside of the light source, the first light guiding portion is configured to receive all light from the first light incident surface and the second light incident surface and guide them to the second optical element; the inner side of the second optical element is connected to the first optical element, the second optical element comprises an inner reflection portion arranged around the outer side of the first optical element and a second light guiding portion arranged at the end away from the light source, the second light guiding portion is connected to the end of the inner reflection portion, and the inner reflection portion is configured to reflect the light emitted by the first light guiding portion and guide it to the second light guiding portion.

[0007] In one embodiment, the first light-guiding portion includes a first total internal reflection surface, which intersects the optical axis and is arranged at the end of the first optical element away from the light source, and is inclined outward from the optical axis in a direction away from the light source, and is configured to reflect all light from the second light incident surface.

[0008] In one embodiment, a radial dimension of the first total internal reflection surface relative to the optical axis is greater than a radial dimension of the second light incident surface.

[0009] In one embodiment, the second light incident surface is configured as a plano-convex light-transmitting surface protruding toward the light source.

[0010] In one embodiment, the first light-guiding portion includes a first light-emitting surface between the first light-entering surface and the internal reflection portion, and the first light-emitting surface is configured to include one or more convex tooth surfaces distributed along the optical axis, so that the first light-emitting surface is a continuous or segmented convex curved surface, and the first light-emitting surface is configured to guide light to the internal reflection portion and / or the second light-guiding portion.

[0011] In one embodiment, the convex tooth surface includes a light guide unit surface suitable for light to pass through, the light guide unit surface is a continuous curved surface, and the curvature of the light guide unit surface gradually increases in a direction approaching the light source.

[0012] In one embodiment, the first light-emitting surface includes a plurality of convex tooth surfaces and at least includes a first convex tooth surface and a second convex tooth surface that are adjacently distributed in sequence in the light-emitting direction of the light source, the first convex tooth surface includes a first light guide unit surface, and the second convex tooth surface includes a second light guide unit surface, wherein the first light guide unit surface and the second light guide unit surface are connected via a transition surface, and the curvature of the first light guide unit surface is greater than the curvature of the second light guide unit surface.

[0013] In one possible implementation manner, the first light-emitting surface is formed by discretizing and reconstructing an outer convex surface.

[0014] In one embodiment, the first light guiding portion includes a second light emitting surface, which is arranged to be connected between the first light emitting surface and the first total internal reflection surface.

[0015] In one embodiment, a light adjustment layer is provided on the interface of the first light guide portion along the optical axis, and the light adjustment layer is configured to block or weaken non-reflected light emitted from the light source.

[0016] In one embodiment, the second optical element is configured as an internal reflection lens or a reflective cup.

[0017] In one possible implementation manner, the internal reflection portion includes a plurality of adjacently connected sub-reflection surfaces, and the angle formed between any adjacent sub-reflection surfaces is an obtuse angle.

[0018] In one embodiment, the second light guiding portion includes a third light emitting surface, and the third light emitting surface is configured to include one of a planar refractive surface, a plano-convex refractive surface, a filtering surface, and a scattering surface.

[0019] In one embodiment, the third light emitting surface includes an optical microstructure surface in the projection direction of the first light guide portion along the optical axis.

[0020] In one possible embodiment, the first optical element is fixedly mounted relative to the second optical element.

[0021] In one embodiment, the first optical element and / or the second optical element are / is / are ...

[0022] In one embodiment, the main body of the first optical element and / or the second optical element is integrally formed of a light-guiding material.

[0023] A second aspect of the present application provides a lamp, which includes the optical component as described above.

[0024] The optical assembly and lamp provided in the present application redistribute the light emitted by the light source. Through the cooperation of the first optical element and the second optical element, the light emitted from the light source can be emitted in a uniform distribution, thereby evenly distributing the light of a single light source on the light-emitting surface, evenly dispersing the intensity of the light, and reducing the problem of glare.

[0025] It should be understood that the teachings of this application do not necessarily achieve all of the beneficial effects described above, but that specific technical solutions can achieve specific technical effects, and other embodiments of this application can also achieve beneficial effects not mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present application are shown in an illustrative and non-limiting manner, in which:

[0027] Figure 1 It is a schematic structural diagram of an embodiment of an optical component for low-glare lighting of the present application.

[0028] Figure 2 It is a schematic cross-sectional structure diagram of an embodiment of the optical component of the present application.

[0029] Figure 3 yes Figure 2 Schematic diagram of the optical path of the implementation scheme.

[0030] Figure 4 It is a schematic cross-sectional structural diagram of another embodiment of the optical component of the present application.

[0031] Figure 5 It is a schematic cross-sectional structure diagram of another embodiment of the optical component of the present application.

[0032] Figure 6 It is a schematic cross-sectional structure diagram of another embodiment of the optical component of the present application.

[0033] Figure 7 It is a perspective schematic diagram of an embodiment of the optical component of the present application.

[0034] Figure 8 It is a perspective schematic diagram of another embodiment of the optical component of the present application.

[0035] Figure 9 It is a perspective schematic diagram of another embodiment of the optical component of the present application.

[0036] Figure 10 This is a simulation diagram of the light distribution effect of the optical component of this application.

[0037] Wherein: 100 light source, 1 optical axis, 200 first optical element, 2 first cavity, 21 first light incident surface, 22 second light incident surface, 3 first light guiding portion, 31 first internal total reflection surface, 32 first light exiting surface, 321 convex tooth surface, 3211 first convex tooth surface, 3212 second convex tooth surface, 322 light guiding unit surface, 3221 first light guiding unit surface, 3222 second light guiding unit surface, 323 transition surface, 34 second light exiting surface, 4 light adjustment layer, 300 second optical element, 5 internal reflection portion, 51 second internal total reflection surface, 52 reflection wall, 53 sub-reflection surface, 6 second light guiding portion, 61 third light exiting surface, 611 optical microstructure surface, 612 groove, 7 second cavity, 71 third light incident surface, 8 rib plate. DETAILED DESCRIPTION

[0038] In order to make the purpose, features, and advantages of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0039] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless otherwise inconsistent.

[0040] Furthermore, 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0041] like Figure 1 The optical assembly for low-glare lighting provided by the present application is shown, comprising a light source 100, a first optical element 200, and a second optical element 300, arranged in sequence. The light source 100 includes a light-emitting chip and an optical axis 1. The light-emitting chip is mounted on a chip mounting surface, through which the optical axis 1 passes. With the optical axis 1 as a reference point, the first optical element 200 and the second optical element 300 are arranged radially outward in sequence. With the light source 100 as a reference point, the first optical element 200 and the second optical element 300 are arranged radially outward in sequence.

[0042] A first cavity 2 for accommodating a light-emitting chip is provided on the side of the first optical element 200 close to the light source 100. The surface of the first cavity 2 is suitable for light emitted from the light source 100 to pass through, and includes a first light incident surface 21 and a second light incident surface 22, wherein the first light incident surface 21 is radially arranged outside the optical axis 1, and the second light incident surface 22 is arranged to close the end of the first light incident surface 21 away from the light source 100 and intersect with the optical axis 1. If the first optical element 200 is an axially symmetrical structure, the first light incident surface 21 can be provided at symmetrical positions on both sides or four sides of the optical axis 1. If the first optical element 200 is a centrally symmetrical structure, the first light incident surface 21 can be arranged around the optical axis 1 to surround the outside of the light-emitting chip. The first light incident surface 21 and the second light incident surface 22 are connected to form the first cavity 2, so that the light emitted from the light source 100 is distributed in the first cavity 2. The first optical element 200 includes a first light guide portion 3 on the outside of the light source 100. The first light guide portion 3 is configured to receive all light from the first light incident surface 21 and the second light incident surface 22 and guide the light to the second optical element 300. Correspondingly, for the light source 100 in the form of a light-emitting chip, to prevent light emitted by the light source 100 from leaking beyond the first light incident surface 21, the light emitting surface of the light source 100 is axially arranged at the edge or inside of the first cavity 2. When the end of the first cavity 2 is flush with the light emitting surface or surrounds the light emitting surface, the light emitting chip can emit light at a 180-degree angle.

[0043] The second optical element 300 is suitable for connecting the first optical element 200 to the inside. The second optical element 300 includes an inner reflector 5 arranged around the outside of the first optical element 200 and a second light guide 6 arranged at an end away from the light source 100. The second light guide 6 is connected to the end of the inner reflector 5. The inner reflector 5 is configured to reflect the light emitted by the first light guide 3 and guide it to the second light guide 6. Figures 1 to 5In the illustrated embodiment, the second optical element 300 is a lens, which is an integrated structure made of a light-guiding material. The internal reflection portion 5 corresponds to its lateral end face, and the second light-guiding portion 6 is its radial light-emitting end face. The internal reflection portion 5 can be an internal reflection surface on the side of the lens that meets the optical total reflection conditions, or it can be a reflective coating provided on the outer wall after surface treatment.

[0044] Figure 2 1 is an embodiment of an optical component for low-glare lighting of the present application, showing a schematic diagram of a longitudinal cross-sectional structure passing through the optical axis. Figure 2 In the embodiment, the first optical element 200 and the second optical element 300 are both integrally formed lenses. The first light-guiding portion 3 includes a first total internal reflection surface 31 located at the axial end of the first optical element 200. Specifically, the first total internal reflection surface 31 intersects the optical axis 1 and is disposed on the end face of the first optical element 200 away from the light source 100. The first total internal reflection surface 31 is inclined outward from the optical axis 1 in a direction away from the light source 100, and is suitable for reflecting all light from the second light-incident surface 22. The first total internal reflection surface 31 can be a flat surface or a curved surface that convexly extends outward in a direction away from the light source 100. Figure 2 In this embodiment, the first total internal reflection surface 31 is symmetrically centered around the optical axis 1, forming an axially or centrosymmetrical structure. Among the light emitted by the light source 100, the light along the optical axis 1 has a higher intensity and is more concentrated. If it is not emitted directly through the optical components, it will cause glare to the human eye. By providing the first total internal reflection surface 31, the light emitted along the axial direction is reflected and redirected, allowing these light rays to be redistributed through the second optical element 300. The resulting emitted light is more uniform, thereby reducing the glare problem.

[0045] Furthermore, in order to ensure that as much light as possible emitted from the second light incident surface 22 can reach the first total internal reflection surface 31, in one embodiment, the radial dimension of the first total internal reflection surface 31 relative to the optical axis 1 is greater than the radial dimension of the second light incident surface 22, that is, the axial projection of the second light incident surface 22 is included in the axial projection of the first total internal reflection surface 31; in another embodiment, the second light incident surface 22 is configured as a plano-convex light-transmitting surface protruding toward the light source 100, so that the light refracted by the second light incident surface 22 can be concentrated on the first total internal reflection surface 31, thereby reducing stray light emitted in other directions.

[0046] The internal total reflection lens of the present application can design the shape of its internal total reflection surface based on the refractive index, total reflection critical angle and surface processing accuracy of the optical lens material, so that the light meets the total reflection conditions and as much light as possible can be internally reflected therein. Its contour shape can be obtained through optical simulation or multiple adjustments and optimizations based on actual usage conditions.

[0047] The first light-guiding portion 3 also includes a first light-emitting surface 32 disposed between the first light-entering surface 21 and the internal reflection portion 5. The first light-emitting surface 32 is configured to include one or more convex tooth surfaces 321 distributed along the optical axis 1, so that the first light-emitting surface 32 is a continuous or segmented convex curved surface. The first light-emitting surface 32 is configured to guide light toward the internal reflection portion 5 and / or the second light-guiding portion 6. The convex tooth surfaces 321 include light-guiding unit surfaces 322 suitable for light to pass through. After being refracted by the light-guiding unit surfaces 322, the light is emitted toward the second optical element 300, with a major portion of the light being emitted toward the second total internal reflection surface 51, and a small portion may also be emitted toward the second light-guiding portion 6. The distribution of the light emitted from the first light-emitting surface 32 depends on the interface shape structure of the first light-emitting surface 32.

[0048] In one embodiment of the present application, the light guide unit surface 322 on the convex tooth surface 321 can be a single continuous curved surface, and the curvature of the light guide unit surface 322 gradually increases in the direction approaching the light source 100. The first light output surface 32 can be composed of a single convex tooth surface 321. However, in order to evenly distribute the light entering from the first light incident surface 21 and emit it toward the internal reflection portion 5, and to meet the curved surface structure, the thickness of the single convex tooth surface 321 gradually increases in the direction approaching the light source 100. This will increase the radial dimension of the optical component. Therefore, the present application further configures the first light output surface 32 to include multiple convex tooth surfaces 321.

[0049] like Figures 2 to 4 In the illustrated embodiment, the first light-emitting surface 32 may include a plurality of convex tooth surfaces 321, and at least include a first convex tooth surface 3211 and a second convex tooth surface 3212 that are adjacently distributed in sequence in the light-emitting direction of the light source 100, the first convex tooth surface 3211 includes a first light-guiding unit surface 3221, and the second convex tooth surface 3212 includes a second light-guiding unit surface 3222, wherein the first light-guiding unit surface 3221 and the second light-guiding unit surface 3222 are connected via a transition surface 323, and the curvature of the first light-guiding unit surface 3221 is greater than the curvature of the second light-guiding unit surface 3222.

[0050] It can be understood that the first light emitting surface 32 can be divided into different numbers of convex tooth surfaces 321 according to light distribution requirements, for example, Figure 2 and Figure 3In the embodiment, the first light emitting surface 32 includes three convex tooth surfaces 321, which are sequentially distributed along the light emitting direction of the light source 100. Each convex tooth surface 321 has a light guide unit surface 322, and adjacent light guide unit surfaces 322 are connected by a transition surface 323. These light guide unit surfaces 322 can work together to guide the light to the internal reflection part 5 or the second light guide part 6, or can also guide the light to the internal reflection part 5 and the second light guide part 6 according to a set distribution ratio, which depends on the contour shape of each light guide unit surface 322 and the refractive index of the material used for the first light guide part 3. For example Figure 4 In the illustrated embodiment, the first light-emitting surface 32 includes two convex tooth surfaces 321. Furthermore, when the first optical element 200 is a long strip extending in the longitudinal direction, the convex tooth surfaces 321 extend in the longitudinal direction to form convex ridges distributed on both sides of the optical axis 1. When the first optical element 200 is a rotational structure, the convex tooth surfaces 321 rotate about the optical axis 1 to form a circular boss.

[0051] The first light-guiding portion 3 further includes a second light-emitting surface 34, which is connected between the first light-emitting surface 32 and the first total internal reflection surface 31. One end of the second light-emitting surface 34 is connected to the end of the first light-emitting surface 32 away from the light source 100, and the other end of the second light-emitting surface 34 is connected to the end of the first total internal reflection surface 31 away from the light source 100. The second light-emitting surface 34 is configured to refract the light reflected by the first total internal reflection surface 31 and guide it laterally, so that the outgoing light is emitted to the internal reflection portion 5 of the second optical element 300.

[0052] Figure 3 Schematic diagram of the optical path in one embodiment of the optical component of the present application. Figure 3 The middle reflective portion 5 adopts a scheme of a second total internal reflection surface 51 in the lens. As shown in each optical path, the curvature of each convex tooth surface 321 decreases successively along the light emitting direction of the light source 100. In this way, the convex tooth surface 321 closest to the light source 100 has the largest curvature, and the lateral light with a larger angle with the optical axis 1 is incident on this surface, and the light is guided by it to the part of the reflective portion close to the light source 100; the convex tooth surface 321 farthest from the light source 100 has the smallest curvature, which is suitable for light with a smaller angle with the optical axis 1 to be refracted to the part of the reflective portion farthest from the light source 100; the middle convex tooth surface 321 has a curvature between the two adjacent ones, and can guide the light to the middle part of the reflective portion.

[0053] Furthermore, in one embodiment of the present application, the first light-emitting surface 32 is formed by a discrete reconstruction of the convex surface, that is, the light-guiding unit surface 322 of each convex tooth surface 321 on the first light-emitting surface 32 is an effective refractive surface, and is reconstructed by the arc surface contours of each part of the same convex surface. After retaining the curvature direction and removing redundant materials, a segmented focusing surface is formed. In terms of its light distribution function, it is equivalent to a continuous focusing surface located outside the optical axis. It achieves lightweight and miniaturization while ensuring optical performance, and can make the first optical element 200 have a smaller volume and only require a smaller installation space, which is beneficial to reducing the overall volume of the optical component of the present application and reducing costs.

[0054] In this application, the second optical element 300 can be configured as an internal reflection lens or a reflective cup. Figures 1 to 5 In the embodiment shown, the second optical element 300 is an internal reflection lens made of a light-guiding material, and the internal reflection portion 5 is correspondingly a second total internal reflection surface 51 on its periphery. Figure 6 In another embodiment shown, the second optical element 300 is a reflective cup, and the internal reflective portion 5 corresponds to the reflective wall 52 inside the reflective cup. Furthermore, the internal reflective portion 5 includes a plurality of adjacently connected sub-reflective surfaces 53, with the angle formed between any adjacent sub-reflective surfaces 53 being an obtuse angle. Adjacent sub-reflective surfaces 53 are sequentially spliced into a scale-like surface, which can achieve precise control of the direction of light after total reflection, reduce light scattering, better converge light, and achieve more uniform illumination distribution.

[0055] The second light guide 6 in the second optical element 300 includes a third light emitting surface 61, which is configured to distribute the light reflected by the internal reflection part 5 according to the specific needs of the light source. The second light guide 6 can be selected from one of the optical elements such as a flat lens, a convex lens, a filter, etc. Figures 1 to 5 When the second light guide portion 6 is in a detachable installation form, it can also be in the form of a lampshade, such as Figure 6 Correspondingly, the third light-emitting surface 61 can be configured to have different structural forms, which can be one of a plane refractive surface, a plano-convex refractive surface, a filtering surface, and a scattering surface, which can achieve effects such as scattered emission, convergent emission, filtering, and uniform lighting of the emitted light.

[0056] Light emitted from light source 100 undergoes refraction, reflection, and absorption after reaching second light incident surface 22 or first total internal reflection surface 31. If the interface is not a smooth, continuous curved surface, such as at the boundary where the contour of first total internal reflection surface 31 changes, light leakage is likely to occur. Or, if the intersection with optical axis 1 forms a concave vertex, light leakage is likely to occur, causing stray light to be emitted. Light from light source 100 along optical axis 1 has greater intensity than other light emitted at an angle to optical axis 1. If stray light is mixed into the final emitted light beam, it will not only cause uneven light intensity but also easily cause glare.

[0057] Therefore, optionally, on the interface of the first light guide portion 3 along the direction of the optical axis 1, including the surface of the second light incident surface 22 in the first light guide portion 3 that can be reached along the light exit direction of the light, or the surface of the first total internal reflection surface 31 that causes the light to be internally reflected, a light adjustment layer 4 is provided on one or more of the above interfaces. The light adjustment layer 4 is configured to block or weaken the non-reflected light emitted from the light source 100. Figure 5 In one embodiment shown in FIG. 1 , a light adjustment layer 4 is covered on the outer surface of the second light incident surface 22 to reduce the incident light; Figure 6 In another embodiment shown, a light-regulating layer 4 is coated on the outer surface of the first total internal reflection surface 31 to block the outgoing light, allowing the first total internal reflection surface 31 to reflect as much light as possible and direct it toward the internal reflection portion 5. The provision of the light-regulating layer 4 reduces the outgoing stray light, improves the uniformity of the outgoing light, and avoids glare.

[0058] The light-regulating layer 4 can be implemented by adding or modifying specific optical materials or structures on the optical interface. For example, in one implementation, the light-regulating layer 4 can be a metal reflective film layer, a filter film layer, or a diffuse reflective film layer. Other materials or structures with light reflection, absorption, or attenuation functions can also be used.

[0059] like Figure 5Shown is an embodiment of an optical assembly for low-glare lighting according to the present application. In this optical assembly, the second optical element 300 is an internally reflecting lens integrally formed from a light-guiding material and includes a second total internal reflection surface 51. The second optical element 300 is recessed from the end proximal to the light source 100 to form a second cavity 7 suitable for accommodating the first optical element 200. This second cavity 7 includes a third light-entry surface 71 radially arranged outside the optical axis 1. The third light-entry surface 71 is arranged corresponding to the first light-exiting surface 32 and the second light-exiting surface 34, and is suitable for receiving light emitted from the first light-guiding portion 3, causing this light to be incident on the second total internal reflection surface 51 of the second optical element 300. The first optical element 200 is fixedly mounted relative to the second optical element 300. A radially extending rib 8 is provided at the end of the first optical element 200 and is connected to one end of the second optical element 300 via the rib 8. For example, the rib 8 can overlap the end face of the low light source 100 of the second optical element 300, thereby preventing the first optical element 200 from moving relative to the second optical element 300, thereby maintaining a stable optical path. Figure 4 Another installation embodiment is shown, in which the second cavity 7 in the second optical element 300 includes a bottom surface, which is suitable for the end of the first optical element 200 to rest against the upper side, and the bottom surface is closed and connected to the bottom end of the third light incident surface 71 and extends radially to avoid interference with the light emitted from the first light guide portion 3.

[0060] like Figure 6 Another embodiment of the optical assembly for low-glare lighting of the present application is shown. In this optical assembly, the second optical element 300 is a reflective cup having a reflective wall 52 on its inner side. The first optical element 200 and the second optical element 300 are each connected to an external fixing provided by the lamp, such as a lamp housing or a lamp bracket, through a connector, or the first optical element 200 and the second optical element 300 are fixedly connected, so that the first optical element 200 remains in a fixed position relative to the second optical element 300. After the light emitted from the light source 100 passes through the first optical element 200 and is transmitted to the reflective wall 52 of the second optical element 300, the light reflected by the reflective wall 52 is emitted outward. The aforementioned second light guide portion 6 is installed at the light outlet of the reflective cup through a connecting mechanism (not shown in the figure). After the light is distributed by the reflective wall 52, it passes through the second light guide portion 6 to provide more uniform output light.

[0061] Figure 7 A schematic perspective view of the optical assembly for low-glare lighting according to the present application is shown. The diagram shows the internal reflective portion 5 located on the outer peripheral wall of the second optical element 300 of the optical assembly, which is composed of adjacent sub-reflective surfaces 53 sequentially spliced together to form an internal reflective surface with a scale-like pattern. The diagram also shows the third light-emitting surface 61, which is configured as an outwardly convex curved surface suitable for converging the emitted light as needed.

[0062] Figure 8 As a further embodiment of the optical component for low-glare lighting of the present application, the third light-emitting surface 61 of the second light-guiding portion 6 may further include an optical microstructure surface 611 along the projection direction of the optical axis 1. The optical microstructure surface 611 is capable of processing stray light reaching the middle of the third light-emitting surface 61, such as scattering or blocking the stray light to reduce the glare effect caused by the stray light.

[0063] Figure 9 Another embodiment is shown, in which a groove 612 is formed in the middle of the third light-emitting surface 61, and a scale surface structure is provided on the inner wall of the groove 612 to facilitate the control of stray light in the second light-guiding portion 6 to reduce scattering, so that the outgoing light can finally be evenly emitted from the third light-emitting surface 61.

[0064] Figure 10 Shown is a light distribution simulation diagram of the optical component for low-glare lighting of the present application. After the light distribution of the optical component, the light emitted from the light source can be evenly distributed, thereby evenly distributing the light of a single light source on the light-emitting surface, evenly dispersing the intensity of the light, and reducing the problem of glare.

[0065] The present application also provides a lamp, which includes an optical assembly in any of the above-mentioned embodiments. In the above-mentioned optical assembly, the main body of one or both of the first optical element 200 and the second optical element 300 is integrally formed of a light-guiding material, which can reduce the loss of light transmission, reduce stray light interference, and optimize the uniformity of light distribution. The first optical element 200, the second optical element 300, or both of them can be axially symmetrical along the optical axis 1. When the lamp corresponds to a strip light, the optical surfaces of the optical assembly are arranged on both sides of the optical axis 1 and extend along the length of the strip light. Or, when the lamp is a square lamp, the optical surfaces of the optical assembly are arranged on the four sides of the optical axis 1. The optical assembly can also be centrally symmetrical along the optical axis 1. In this way, correspondingly, the first optical element 200 and the second optical element 300 are a rotary structure centered on the optical axis 1, and the lamp corresponds to a round lamp. The lamp of the present application obtains more uniform output light after total internal reflection through the light distribution of the light source by the optical assembly, reducing glare and improving human eye comfort.

[0066] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An optical component, characterized in that: The invention comprises a light source (100), a first optical element (200) and a second optical element (300) which are arranged in sequence, wherein: The light source (100) comprises a light-emitting chip and an optical axis (1), wherein the light-emitting chip passes through the optical axis (1); A first cavity (2) for accommodating a light-emitting chip is provided on a side of the first optical element (200) close to the light source (100); a surface of the first cavity (2) is suitable for light from the light source (100) to pass through and includes a first light incident surface (21) and a second light incident surface (22); the first light incident surface (21) is radially arranged outside the optical axis (1); the second light incident surface (22) is configured to close an end of the first light incident surface (21) away from the light source (100) and intersect with the optical axis (1); the first optical element (200) includes a first light guide portion (3) on the outside relative to the light source (100); the first light guide portion (3) is configured to receive all light from the first light incident surface (21) and the second light incident surface (22) and guide the light to the second optical element (300); The inner side of the second optical element (300) is connected to the first optical element (200). The second optical element (300) includes an inner reflection portion (5) arranged around the outer side of the first optical element (200) and a second light guide portion (6) arranged at an end away from the light source (100). The second light guide portion (6) is connected to the end of the inner reflection portion (5). The inner reflection portion (5) is configured to reflect light emitted by the first light guide portion (3) and then guide it to the second light guide portion (6).

2. The optical component according to claim 1, wherein The first light-guiding portion (3) comprises a first total internal reflection surface (31), which intersects the optical axis (1) and is arranged at the end of the first optical element (200) away from the light source (100), and is inclined outward from the optical axis (1) in a direction away from the light source (100), and is suitable for reflecting all light from the second light incident surface (22).

3. The optical component according to claim 2, wherein The radial dimension of the first total internal reflection surface (31) relative to the optical axis (1) is greater than the radial dimension of the second light incident surface (22).

4. The optical component according to claim 2, wherein The second light incident surface (22) is configured as a plano-convex light-transmitting surface protruding toward the light source (100).

5. The optical component according to claim 1, wherein The first light-guiding portion (3) includes a first light-emitting surface (32) between the first light-entering surface (21) and the internal reflection portion (5). The first light-emitting surface (32) is configured to include one or more convex tooth surfaces (321) distributed along the direction of the optical axis (1), so that the first light-emitting surface (32) is a continuous or segmented convex curved surface. The first light-emitting surface (32) is configured to guide light to the internal reflection portion (5) and / or the second light-guiding portion (6).

6. The optical component according to claim 5, wherein The convex tooth surface (321) includes a light guide unit surface (322) suitable for light to pass through, the light guide unit surface (322) is a continuous curved surface, and the curvature of the light guide unit surface (322) gradually increases in a direction approaching the light source (100).

7. The optical component according to claim 5, wherein The first light-emitting surface (32) includes a plurality of convex tooth surfaces (321) and at least includes a first convex tooth surface (3211) and a second convex tooth surface (3212) that are sequentially adjacently distributed in the light-emitting direction of the light source (100); the first convex tooth surface (3211) includes a first light-guiding unit surface (3221); the second convex tooth surface (3212) includes a second light-guiding unit surface (3222); wherein the first light-guiding unit surface (3221) and the second light-guiding unit surface (3222) are connected via a transition surface (323); and the curvature of the first light-guiding unit surface (3221) is greater than the curvature of the second light-guiding unit surface (3222).

8. The optical component according to claim 7, wherein The first light-emitting surface (32) is formed by discretizing and reconstructing an outer convex surface.

9. The optical component according to claim 5, wherein: The first light guide portion (3) comprises a second light emitting surface (34) which is arranged to be connected between the first light emitting surface (32) and the first total internal reflection surface (31).

10. The optical assembly according to claim 1, wherein A light adjustment layer (4) is provided on the interface of the first light guide portion (3) along the direction of the optical axis (1), and the light adjustment layer (4) is configured to block or weaken non-reflected light emitted from the light source (100).

11. The optical assembly according to claim 1, wherein The second optical element (300) is configured as an internal reflection lens or a reflective cup.

12. The optical assembly according to claim 1, wherein The internal reflection portion (5) comprises a plurality of adjacently connected sub-reflection surfaces (53), and the included angle formed between any adjacent sub-reflection surfaces (53) is an obtuse angle.

13. The optical assembly according to claim 1, wherein The second light-guiding portion (6) includes a third light-emitting surface (61), and the third light-emitting surface (61) is configured to include one of a plane refractive surface, a plano-convex refractive surface, a filtering surface, and a scattering surface.

14. The optical assembly according to claim 13, wherein The third light-emitting surface (61) includes an optical microstructure surface (611) in the projection direction of the first light-guiding portion (3) along the optical axis (1).

15. The optical assembly according to claim 1, wherein The first optical element (200) is fixedly mounted relative to the second optical element (300).

16. The optical assembly according to claim 1, wherein The first optical element (200) and / or the second optical element (300) are axially symmetric or centrosymmetric along the optical axis (1).

17. The optical assembly according to claim 1, wherein The main body of the first optical element (200) and / or the second optical element (300) is integrally formed of a light-guiding material.

18. A lamp, characterized in that: Comprising the optical component according to any one of claims 1-17.

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