Lamp

Abstract

The utility model provides a lamp, and relates to the field of lighting appliances. The mounting plate is provided with a first surface and a second surface which are deviated from each other; the plurality of light-emitting modules are arranged on the first surface around the central axis; the light-emitting module comprises a light-emitting unit and an optical lens, the optical lens is provided with a light inlet side and a light outlet side, and the light-emitting unit and the optical lens are correspondingly arranged and located on the light inlet side. Light of the light emitting unit enters the optical lens through the light incident side and then is emitted to the light receiving surface through the light emergent side. Light emitted from the light emitting side is deflected relative to the central axis and forms a plurality of light spots on the light receiving face, the light spots and the light emitting module are arranged correspondingly, and the light spots comprise water-drop-shaped light spot parts. According to the lamp, the multiple light-emitting modules are arranged and integrated on the same mounting plate in a surrounding mode, and on one hand, the illumination range of the lamp can be enlarged; and meanwhile, water-drop-shaped light spots can be formed to form a novel lighting effect. On the other hand, only one mounting plate is arranged, the number of mounting pieces can be reduced, the overall size of the lamp is reduced, and flattening of the lamp is facilitated.

Description

Technical Field

[0001] The present application relates to the field of lighting fixtures, and in particular to a lamp. Background Art

[0002] The field of modern lamps is constantly progressing and developing, and space lighting has become an indispensable part. In order to meet the lighting needs of users, modern lamps are developing in the direction of large-scale lighting areas. Existing large-scale partitioned lighting lamps often have multiple one-to-one corresponding light panels and light source modules. By arranging multiple light source modules in sequence, large-scale lighting and specific lighting effects are achieved, and the optical elements in the light source modules are tilted to achieve polarization and further increase the lighting area. However, the assembly between the multiple light panels and the multiple light source modules in the above scheme is complicated and the space occupied by the lamp is large. Utility Model Content

[0003] In view of this, an embodiment of the present application provides a lamp to solve the above technical problems.

[0004] An embodiment of the present application provides a lamp, which is used to illuminate a light receiving surface, and the lamp includes a mounting plate and a plurality of light emitting modules. The mounting plate has a first surface and a second surface that are opposite to each other, and a plurality of light emitting modules are arranged on the first surface around a designated central axis. Each light emitting module includes a light emitting unit and an optical lens, the optical lens has a light incident side and a light emitting side, and the light emitting unit and the optical lens are correspondingly arranged and located on the light incident side. After the light of the light emitting unit enters the optical lens through the light incident side, the propagation direction of the light emitted through the light emitting side is deflected relative to the central axis and forms a plurality of light spots on the light receiving surface, and the plurality of light spots and the plurality of light emitting modules are arranged in a one-to-one correspondence, and the light spots include at least one of the following light spots: a water drop-shaped light spot, an elliptical light spot, and a circular light spot.

[0005] In some embodiments, the optical lens includes a light incident portion and a polarizing portion connected to each other. The light incident side is formed at the light incident portion, the light exiting side is formed at the polarizing portion, and the light emitting unit is disposed between the mounting plate and the light incident portion. After the outgoing light of the light emitting unit is incident on the polarizing portion via the light incident portion, it is propagated to the outside by the polarizing portion, and the polarizing portion is used to deflect the outgoing light relative to the central axis.

[0006] In some embodiments, the polarizing unit includes a polarizing structure. The polarizing structure includes a reflecting surface, which is tilted relative to the central axis. After the outgoing light passes through the optical lens, it is reflected by the reflecting surface to a direction away from the central axis.

[0007] In some embodiments, the incident angle of the outgoing light on the reflective surface is greater than the critical angle of the outgoing light from the polarizing portion to the outside air, so that the outgoing light of the light emitting unit is totally reflected on the reflective surface after entering the polarizing portion.

[0008] In some embodiments, the reflective surface is provided with a total reflection film, which is used to make the outgoing light fully reflected on the reflective surface.

[0009] In some embodiments, the polarizing structure further includes a light emitting surface. The light emitting surface is connected to the light reflecting surface and is located on the side of the light reflecting surface away from the central axis. The two ends of the light emitting surface are respectively connected to the light incident portion and the light reflecting surface, and the two ends of the light reflecting surface are respectively connected to the light incident portion and the light emitting surface, so that the polarizing structure protrudes relative to the light incident portion.

[0010] In some embodiments, the number of the polarization structure in the polarization unit is one, and the angle between the light emitting surface and the light reflecting surface is an acute angle.

[0011] In some embodiments, the number of the polarizing structure in the polarizing portion is multiple, and the multiple polarizing structures are sequentially arranged on the main body along a direction away from the central axis.

[0012] In some embodiments, the protruding heights of the plurality of polarizing structures relative to the light incident portion gradually decrease in a direction away from the central axis, and the reflecting surfaces in the plurality of polarizing structures are parallel to each other.

[0013] In some embodiments, a receiving groove is provided on one side of the optical lens facing the light emitting unit. The receiving groove has a bottom wall and a peripheral wall surrounding the periphery of the bottom wall, the bottom wall is a curved surface convex toward the mounting plate, and the emitted light is incident on the optical lens via the bottom wall and the peripheral wall.

[0014] In some embodiments, the optical lens further includes a total reflection surface. The total reflection surface is located on the side of the optical lens facing the light-emitting unit and connected to the peripheral wall. After part of the emitted light from the light-emitting unit enters the optical lens through the peripheral wall, it is reflected by the total reflection surface to the light-emitting side.

[0015] In some embodiments, each light-emitting module includes a plurality of light-emitting units and a plurality of optical lenses. The plurality of optical lenses and the plurality of light-emitting units are arranged in a one-to-one correspondence, and the propagation direction of the light emitted by the plurality of optical lenses in the same light-emitting module is the same.

[0016] In some embodiments, among the multiple light-emitting units of each light-emitting module, at least two light-emitting units have different colors.

[0017] In some embodiments, when the lamp emits light toward a plane perpendicular to the central axis, the plurality of light-emitting modules form a plurality of illumination spots on the plane, and the plurality of illumination spots are arranged in sequence around the central axis. There is no overlap between two adjacent illumination spots, or the overlap area ratio between the two adjacent illumination spots is less than or equal to 10%.

[0018] Compared with the prior art, the embodiment of the present application provides a lamp, which includes a mounting plate and a plurality of light-emitting modules. Among them, the plurality of light-emitting modules are arranged on the same mounting plate. On the one hand, it is not necessary to set a plurality of mounting plates corresponding to the plurality of light-emitting modules one by one, and the mounting plate can be designed in an integrated molding manner, thereby reducing production costs and improving production efficiency. On the other hand, by reducing the number of mounting plates, the installation parts of the lamp are reduced, the installation process can be simplified and the overall volume of the lamp can be reduced, which is convenient for the small volume development of the lamp. In addition, the plurality of light-emitting modules are arranged around the central axis, and a multi-angle lighting area or a decorative area around the central axis can be formed, thereby improving the lighting range and forming a linked lighting effect. Further, the light-emitting module includes a light-emitting unit and an optical lens, and the light generated by the light-emitting unit forms an outgoing light deflected relative to the central axis after being polarized by the optical lens, which can further improve the lighting range or the decorative range of the lamp. In addition, the plurality of light-emitting modules are arranged around the central axis to form a plurality of light spots around the central axis on the light receiving surface, and the plurality of light spots can form a lighting effect similar to a petal, thereby forming a novel lighting effect and improving the visual experience of the user. In addition, polarization can be achieved without setting up tilted optical devices, and the thickness of the lamp will not be increased, which is conducive to the flat design of the lamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the structure of a lamp provided in one embodiment of the present application.

[0021] Figure 2 yes Figure 1 A schematic cross-sectional view of the lamp along line II is shown.

[0022] Figure 3 yes Figure 1 Another structural schematic diagram of the lamp shown.

[0023] Figure 4 yes Figure 1 Another structural schematic diagram of the lamp shown.

[0024] Figure 5 This is an example diagram of the light spot distribution formed by the lamp provided in the embodiment of the present application.

[0025] Figure 6 yes Figure 2The lamp shown is a schematic structural diagram of a polarizing portion including a polarizing structure.

[0026] Figure 7 yes Figure 6 Schematic diagram of the light path of the lamp along the II-II line section.

[0027] Figure 8 yes Figure 2 The structure diagram of the polarizing part of the lamp shown includes multiple polarizing structures.

[0028] Fig. 9 yes Figure 8 Schematic diagram of the light path of the lamp along the III-III line section.

[0029] Fig.10 yes Figure 1 Another structural schematic diagram of the lamp shown. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] It should be noted that when an element / component is referred to as being "fixed to" another element / component, it may be directly on the other element / component or there may be an intermediate element / component. When an element / component is considered to be "connected" to another element / component, it may be directly connected to the other element / component or there may be an intermediate element / component at the same time; at the same time, when an element / component is considered to be "connected" to another element / component, it may be integrally formed or assembled with the other element / component. When an element / component is considered to be "set on" another element / component, it may be directly set on the other element / component or there may be an intermediate element / component at the same time.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] See also Figure 1, an embodiment of the present application provides a lamp 100. In this embodiment, the lamp 100 is used to illuminate a light receiving surface and form an illumination spot or a decorative spot on the light receiving surface. The lamp 100 can be a wall washer, an atmosphere lamp, a ceiling lamp, a linear lamp, etc., and the light receiving surface can be a receiving plane such as a ceiling, a wall, or a ground. As an example, the lamp 100 is a wall washer, which is used to provide lighting for a wall. As another example, the lamp 100 can be an atmosphere lamp, which plays a decorative role. When the lamp is installed on the stage, it can increase the illumination range of the atmosphere lamp, and form a variety of lighting effects to enhance the user's visual experience.

[0034] See 1 and Figure 2 In one embodiment provided in the present application, a lamp 100 includes a mounting plate 10 and a plurality of light-emitting modules 20. The mounting plate 10 has a first surface 101 and a second surface 102 that are opposite to each other, and a plurality of light-emitting modules 20 are arranged on the first surface 101 around a designated central axis O1. Each light-emitting module 20 includes a light-emitting unit 21 and an optical lens 22, and the optical lens 22 has a light-entering side 221 and a light-emitting side 222. The light-emitting unit 21 and the optical lens 22 are correspondingly arranged and located on the light-entering side 221. After the light of the light-emitting unit 21 enters the optical lens 22 through the light-entering side 221, it is emitted to the light receiving surface through the light-emitting side 222, and the propagation direction of the light emitted through the light-emitting side 222 is deflected relative to the central axis O1. Among them, the plurality of light-emitting modules 20 are arranged on the same mounting plate 10. On the one hand, it is not necessary to set a plurality of mounting plates 10 corresponding to the plurality of light-emitting modules 20 one by one, and the mounting plate 10 can be designed as an integrated molding, thereby reducing production costs and improving production efficiency. On the other hand, by reducing the number of mounting plates 10, the number of mounting parts of the lamp 100 can be reduced, which can simplify the installation process and reduce the overall volume of the lamp 100, thereby facilitating the small-volume development of the lamp 100. In addition, a plurality of light-emitting modules 20 are arranged around the central axis O1, which can form a multi-angle lighting area or a decorative area around the central axis O1, thereby improving the lighting range and forming a linked lighting effect. Furthermore, the light-emitting module 20 includes a light-emitting unit 21 and an optical lens 22. The light generated by the light-emitting unit 21 is polarized by the optical lens 22 to form an outgoing light beam deflected relative to the central axis O1, which can further improve the lighting range or decorative range of the lamp 100.

[0035] In addition, the multiple light emitting modules 20 are arranged around the central axis 01, and the emitted light forms multiple one-to-one corresponding light spots on the light receiving surface, so the multiple light spots are also arranged around the central axis 01. In addition, the multiple light emitting modules 20 are arranged around the central axis 01 to form multiple water drop-shaped light spots around the central axis 01 on the light receiving surface, and the multiple water drop-shaped light spots can form a lighting effect similar to a petal shape.

[0036] Specifically, the light spot may include at least one of the following light spots: a water drop-shaped light spot, an elliptical light spot, and a circular light spot, which can form a novel lighting effect and improve the user's visual experience. In addition, polarization can be achieved without setting an inclined optical device, and the thickness of the lamp 100 will not be increased, which is conducive to the flat design of the lamp 100.

[0037] Next, each component of the lamp 100 and the specific structure of each component will be introduced one by one.

[0038] See also Figure 1 and Figure 2 In this embodiment, the mounting plate 10 is used as a mounting carrier for mounting components, and the components may be a light-emitting module 20, a heat sink, a controller, etc. The mounting plate 10 is roughly plate-shaped and has a first surface 101 and a second surface 102, and the first surface 101 and the second surface 102 are opposite to each other. As an example, the mounting plate 10 may be a circuit board, and the component may be a light-emitting module 20. The circuit board is used to provide electrical energy to the light-emitting module 20, so as to achieve internal and external conduction between the light-emitting module 20 and the external circuit. Specifically, a plurality of light-emitting modules 20 are arranged on the first surface 101 of the circuit board, and the second surface 102 of the circuit board is used to adhere and fix to the mounting surface. The circuit board may be a flexible circuit board or a printed circuit board, and the mounting surface may be a wall, a ground or other supporting surface. As an example, the circuit board is a hard circuit board, on which a conductive trace is provided, which can be used as a wire to connect all the light-emitting modules 20. In addition, in this embodiment, a plurality of light-emitting modules 20 are arranged on the same mounting plate 10. On the one hand, it is not necessary to arrange a plurality of conventional mounting plates 10 corresponding to the plurality of light-emitting modules 20, and the mounting plate 10 can be designed as an integrated molding, thereby reducing production costs and improving production efficiency. On the other hand, by reducing the number of mounting plates 10, the number of mounting parts of the lamp 100 is reduced, the installation process can be simplified, and the overall volume of the lamp 100 can be reduced, which facilitates the development of the small volume of the lamp 100.

[0039] In this embodiment, the number of light-emitting modules 20 is multiple, and the multiple light-emitting modules 20 are used to form multiple light spots on the light receiving surface. Specifically, multiple light-emitting modules 20 are arranged around the designated central axis O1 on the first surface 101 of the mounting plate 10, and can form a multi-angle lighting area or decorative area around the central axis O1, and each lighting area or decorative area is composed of a light spot formed by the same light-emitting module 20, thereby improving the lighting range and forming a linked lighting effect. As an example, multiple light-emitting modules 20 are arranged on the first surface 101 to form a polygon around the central axis O1. The form of the polygon is not limited, and can be a quadrilateral, a pentagon, a hexagon, etc., which is not limited in this embodiment. It can be understood that different polygons can form lighting partitions or decorative partitions with corresponding numbers of sides. The more sides of the polygon, the more lighting partitions or decorative partitions are divided, the smaller the space occupied by each lighting partition or decorative partition, and the richer the linked light effect formed. For example, the hexagonal arrangement can divide the area around the central axis O1 into six lighting partitions or decorative partitions, and form six linked lighting effects. It should be noted that the number of light-emitting modules 20 on the same side of the polygon can be one or more. The purpose of setting a plurality of light-emitting modules 20 is to increase the light brightness of the lighting partition or the decorative partition. The number of light-emitting modules 20 on the same side can be selected according to actual needs. The present embodiment does not limit the number of light-emitting modules 20 on the same side of the polygon. As an example, the number of light-emitting modules 20 can be three. The three light-emitting modules 20 are arranged in sequence to form a side of the polygon. The propagation paths of the outgoing light formed by each light-emitting module 20 are parallel to each other and propagate in the same direction. In order to further improve the lighting effect or decorative effect, the light formed by the light-emitting modules 20 with different numbers of sides on the polygon has different colors. For example, one of the light-emitting modules 20 forms a red outgoing light and forms a red light spot on the light receiving surface, and the other light-emitting module 20 forms a yellow outgoing light and forms a yellow light spot on the light receiving surface, so that two different colors of light effects can be achieved. Setting multiple colors of outgoing light can form multiple light effect lighting and improve the user's visual experience.

[0040] See also Figure 3 and Figure 4As another example, a plurality of light-emitting modules 20 can be divided into a plurality of groups, each group having two or more light-emitting modules 20, and the plurality of light-emitting modules 20 are arranged in sequence around the central axis 01. For example, if they are arranged in a polygon, each group of light-emitting modules 20 constitutes one side of the polygon. For example, if they are arranged in a radial shape, each group of light-emitting modules 20 constitutes a spoke of the radial shape; for example, if they are arranged in a windmill shape, each group constitutes a blade of the windmill. Each lighting partition or decorative partition formed by each group of light-emitting modules 20 forms a corresponding light spot, which can be a water droplet-shaped light spot. The propagation paths of the emitted light rays formed by the light-emitting modules 20 mentioned above and arranged in the same group are parallel to each other and have the same propagation direction. Similarly, the more groups formed by the plurality of light-emitting modules 20, the more lighting partitions or decorative partitions formed, the smaller the space occupied by each lighting partition or decorative partition, and the richer the linkage light effect formed. The color of the emitted light formed by any one of the multiple light-emitting modules 20 may be the same or different, and this embodiment does not limit this. It can be understood that the more types of colors of the emitted light, the richer the color of the light spot formed, and the better the lighting effect or decorative effect. The surrounding method of the multiple light-emitting modules 20 in this application is not limited to the polygonal surrounding, circular surrounding, and windmill surrounding mentioned above, and may also include other surrounding methods, and this embodiment does not limit this.

[0041] See also Figure 5 It should be noted that there is no overlapping area or the overlapping area is small between the multiple lighting partitions or decorative partitions formed by any of the above-mentioned surrounding methods. Specifically, when the lamp 100 emits light on a plane perpendicular to the central axis O1, multiple light-emitting modules 20 will form lighting partitions arranged in sequence around the central axis O1. Adjacent lighting partitions or decorative partitions do not overlap with each other or the overlapping area is small, thereby reducing the proportion of overlapping and cross-lighting of light spots in lighting partitions or decorative partitions, ensuring the lighting effect of each lighting partition, and improving the user's visual experience. As an example, when two adjacent lighting partitions overlap, the overlapping area ratio is less than or equal to 10%. "Overlapping area ratio" can be understood as the degree of overlap between two adjacent lighting partitions, specifically the ratio of the overlapping area to the sum of the areas of the two adjacent lighting partitions.

[0042] It should be noted that the light spot formed by each light-emitting module 20 on the light receiving surface can be roughly in the shape of a water droplet, an ellipse, or a circle, and this embodiment does not impose specific restrictions on this. Since multiple light-emitting modules 20 are arranged around the central axis 01 and form multiple one-to-one corresponding light spots on the light receiving surface, multiple light spots are also arranged around the central axis 01. As an example, multiple light spots are arranged radially and form a petal-shaped lighting effect. Specifically, the light spot can be a water droplet-shaped light spot, which includes a water droplet-shaped light spot portion, each water droplet-shaped light spot portion has a first end close to the central axis 01 and a second end away from the central axis 01, and the size of the water droplet-shaped light spot portion gradually increases in the direction from the first end to the second end. The surrounding arrangement of water droplet-shaped light spots can form a novel lighting effect or decorative light effect and improve the user's visual experience.

[0043] Please refer again Figure 2 In this embodiment, the light-emitting module 20 includes a light-emitting unit 21 and an optical lens 22, and the light-emitting unit 21 and the optical lens 22 are arranged correspondingly. The optical lens 22 has a light-entering side 221 and a light-emitting side 222, and the light-emitting unit 21 and the optical lens 22 are arranged on the light-entering side 221. Specifically, the light-emitting unit 21 is used to generate an outgoing light, and the outgoing light enters the optical lens 22 through the light-entering side 221, and then exits to the light receiving surface through the light-exiting side 222. The propagation direction of the light emitted through the light-exiting side 222 is deflected relative to the central axis O1, and specifically, it can be deflected toward the direction where the central axis O1 is located to form a bright spot on the light receiving surface, or it can be deflected in a direction away from the central axis O1 to increase the illumination range or decoration range. The deflection angle can be an acute angle, for example, there is an upward inclination angle relative to the central axis O1, so that the illumination range or decoration range of the lamp 100 can be further improved. It should be noted that the deflection direction and deflection angle of the light are not limited in this embodiment.

[0044] In this embodiment, the light-emitting unit 21 is detachably connected between the mounting plate 10 and the light-entering portion 23, so as to facilitate the maintenance and replacement of the light-emitting unit 21. The light-emitting unit 21 may be an incoherent light source, specifically a halogen light bulb, UHP (ultra-high pressure mercury bulb), UHE (ultra-high pressure mercury bulb) or other high-pressure gas light source or LED light source, etc. As an example, the light-emitting unit 21 is an LED light source, specifically a monochrome LED lamp bead or a tri-color LED lamp bead. On the one hand, it can improve the efficiency of converting electrical energy into light energy, thereby reducing energy waste. At the same time, the LED light source generates less heat during illumination, which plays a role in energy saving and environmental protection. On the other hand, the LED light source has a long service life, which reduces the frequency of light source replacement and thus reduces the cost of use. At the same time, LED can avoid damage to the user's eyes and improve the safety of use.

[0045] In an embodiment of the present application, the optical lens 22 is used to collect the outgoing light generated by the light emitting unit 21 and emit it to the light receiving surface. The optical lens 22 is connected to the mounting plate 10 and is arranged on a side away from the light emitting unit 21. The optical lens 22 is a polarized lens, which can be a polarized convex lens or a total internal reflection (TIR) ​​polarized lens. As an example, the optical lens 22 is a TIR polarized lens, and the light generated by the light emitting unit 21 is fully emitted in the TIR polarized lens, which can improve the utilization rate of the light. At the same time, the TIR polarized lens has a smaller light collecting area and excellent uniform light, and can achieve light focusing in a smaller space, thereby reducing light energy loss and achieving uniform light output.

[0046] See also Figure 2 In the present embodiment, the optical lens 22 includes a light incident portion 23 and a polarizing portion 24, and the light incident portion 23 is connected to the polarizing portion 24. Specifically, the light incident side 221 forms the light incident portion 23, the light emitting side 222 forms the polarizing portion 24, and the light emitting unit 21 is arranged between the mounting plate 10 and the light incident portion 23. It should be noted here that the names of "light incident portion" and "polarizing portion" are named for the convenience of description. In the specific example, there may be a clear dividing line or no clear dividing line between the structures of the two, for example, the two are assembled together or the two are an integrally formed structure. In some possible embodiments, the light incident portion 23 and the polarizing portion 24 may be an integrally formed structure, that is, the light incident portion 23 and the polarizing portion 24 are different parts of the same component, one part of which is used to collect light and the other part is used to deflect light. Specifically, the optical lens 10 can be integrally processed from a material with good light transmittance such as glass or plastic optical material, and it can be regarded as an irregularly shaped lens. The light input portion 23 is used to collect the outgoing light generated by the light emitting unit 21 and transmit the outgoing light to the polarizing portion 24. The polarizing portion 24 is used to deflect the outgoing light relative to the central axis O1. The light emitted through the polarizing portion 24 may be inclined upward relative to the central axis O1, thereby further improving the lighting range or decorative range of the lamp 100. Furthermore, the distance between the light input portion 23 and the polarizing portion 24 is as small as possible. On the one hand, the structure of the optical lens 22 can be compact, the volume of the optical lens 22 can be reduced, and the lamp 100 can be flattened; at the same time, it can save installation space and be applied to more usage scenarios; on the other hand, it is convenient for the outgoing light generated by the light emitting unit 21 to quickly enter the polarizing portion 24 from the light output portion, shortening the optical path length of the outgoing light, improving the output efficiency and reducing the loss of light energy.

[0047] See also Figure 2 and Figure 6The polarizing portion 24 further includes a polarizing structure 241. The outer contour of the polarizing structure 241 can be sawtooth-shaped or arc-shaped. As an example, when the polarizing structure 241 is a sawtooth structure and the light-emitting unit 21 is a multi-color LED lamp bead, multiple beams of emitted light of different colors can be formed. The propagation paths of different emitted light beams emitted through the same tooth surface are parallel, which can avoid the phenomenon of cross-light.

[0048] See also Figure 7 , the polarizing structure 241 also includes a reflecting surface 2411. The reflecting surface 2411 is the area of ​​the polarizing structure 241 used to reflect light. The reflecting surface 2411 is arranged on the side of the polarizing structure 241 facing the central axis O1. After the light generated by the light-emitting unit 21 is projected into the light portion 23, it is reflected via the reflecting surface 2411 to a direction away from the central axis O1. In this embodiment, the reflecting surface 2411 is a plane. The reflecting surface 2411 is arranged obliquely relative to the central axis O1, so that the outgoing light generated by the light-emitting unit 21 can be reflected via the reflecting surface 2411 to a direction away from the central axis O1, thereby increasing the lighting range or decorative range of the lamp 100 and improving the lighting effect or decorative effect. Specifically, the angle between the plane where the reflecting surface 2411 is located and the central axis O1 is an acute angle. The light generated by the light-emitting unit 21 is reflected when passing through the surface of the reflecting surface 2411, and is reflected to a direction away from the central axis O1. At the same time, the emitted light can be reflected to different positions through different areas of the reflective surface 2411, thereby increasing the lighting range or decorative range of the lamp 100. As an example, the angle between the plane where the reflective surface 2411 is located and the central axis O1 has an angle value range of 15° to 60° (including the endpoints). For example, the angle between the plane where the reflective surface 2411 is located and the central axis O1 can be 15°, 30°, 45°, 60°, etc. It should be noted that the angle between the plane where the reflective surface 2411 is located and the central axis O1 can also be other angles, which can be set according to actual application requirements to obtain corresponding lighting effects or decorative effects, which is not limited in this embodiment.

[0049] In some other embodiments, the reflective surface 2411 may include multiple planar portions. The multiple planar portions are all planes, and the multiple surface segments are sequentially connected along the light emitting direction. Two adjacent surface segments among the multiple surface segments are arranged at an angle (the angle between the two is less than 180°), so that the surface segments at different positions can receive the outgoing light of different angles generated by the light-emitting unit 21 and reflect it with different reflection paths, thereby increasing the illumination range or decoration range. At the same time, it can destroy the coherence of the outgoing light to a certain extent and improve the random distribution of the outgoing light.

[0050] In other embodiments, the reflective surface 2411 may also be a curved surface or be formed by connecting a plurality of curved surface segments, and the concave direction of the curved surface is away from the central axis O1, that is, the reflective surface 2411 is a convex surface that forms the outer contour of the polarizing structure 241. The curved surface may be a spherical surface, a quasi-spherical surface, an ellipsoidal surface, a free-form surface or other non-spherical surface, and this embodiment does not limit this. The provision of a curved surface enables the multiple beams of outgoing light generated by the light-emitting unit 21 to be reflected to different positions through different areas of the reflective surface 2411, thereby increasing the lighting range or decorative range of the lamp 100, or facilitating the use of the focusing or diffusing effect of the curved surface / curved surface to achieve a lighting spot of a specific shape. In addition, the curved surface can make the light output more uniform. Furthermore, the distance between the reflective surface 2411 and the light-emitting unit 21 is as small as possible. On the one hand, it can make the structure of the optical lens 22 compact, reduce the volume of the optical lens 22, and thus realize the flattening of the lamp 100; at the same time, it can save installation space and be applied to more usage scenarios; on the other hand, it is convenient for the outgoing light generated by the light-emitting unit 21 to quickly enter the polarizing part 24 from the light-emitting part, thereby shortening the optical path length of the outgoing light, improving the output efficiency and reducing the loss of light energy.

[0051] In some embodiments, the reflective surface 2411 is a total reflection surface 2413, which is used to cause the outgoing light to be totally reflected thereon. Specifically, the refractive index of the optical lens 22 for light is greater than 1, and the incident angle of the outgoing light generated by the light-emitting unit 21 on the reflective surface 2411 in the optical lens 22 is greater than the critical angle of the outgoing light from the polarizing portion 24 to the outside air, so that the outgoing light of the light-emitting unit 21 is totally reflected on the reflective surface 2411, which can improve the utilization rate of light and thus improve the reflection efficiency. The above-mentioned "critical angle" should be understood as the incident angle corresponding to the refraction angle of 90° when the light enters the sparse medium from the dense medium. At the same time, a reflection-enhancing film (not shown in the figure) can be provided on the reflective surface 2411 to increase the total reflection effect. In other embodiments, the reflective surface 2411 can also be provided with a total reflection film (not shown in the figure), which is adhered to the reflective surface 2411 and is used to cause the outgoing light to be totally reflected on the reflective surface 2411. Please refer to Figure 7In this embodiment, the polarizing structure 241 further includes a light emitting surface 2412. The light emitting surface 2412 is the area of ​​the optical lens 22 for emitting light, and the light emitting surface 2412 is connected to the reflecting surface 2411 and is located on the side of the reflecting surface 2411 away from the central axis O1. Specifically, the two ends of the light emitting surface 2412 are respectively connected to the light incident portion 23 and the reflecting surface 2411, and the two ends of the reflecting surface 2411 are respectively connected to the light incident portion 23 and the light emitting surface 2412. There is a connection angle between the light emitting surface 2412 and the reflecting surface 2411, so that the polarizing structure 241 forms a sharp angle structure and protrudes relative to the light incident portion 23. The connection angle between the light emitting surface 2412 and the reflecting surface 2411 can be an acute angle, and the value range of the acute angle is 15° to 75°. For example, the value of the angle between the light emitting surface 2412 and the reflecting surface 2411 can be 15°, 30°, 45°, 75°, and the like. It should be noted that the value range of the angle between the light emitting surface 2412 and the reflecting surface 2411 can also be other angles, which is not limited in the present embodiment. In some embodiments, the light emitting surface 2412 is also provided with a plurality of closely arranged surface microstructures (not shown in the figure), and the microstructure can be a honeycomb structure, a scale-like structure, a beaded structure, and the like. As an example, the microstructure is a beaded structure, which is roughly a regular hexagon. When light rays of different light paths pass through the light emitting surface 2412, they are fully mixed under the action of the microstructure to achieve a uniform light emission effect, and avoid the phenomenon of color difference or stratification of the emitted light spot, thereby achieving a good light emission effect. At the same time, the beaded surface structure can break the total reflection condition and transmit the outgoing light emitted through the reflective surface 2411 to lighting areas or decorative areas of different ranges, thereby increasing the lighting range or decorative range.

[0052] See also Figure 2 and Figure 6It should be noted that the polarizing portion 24 can be provided with different numbers of polarizing structures 241 to form polarizing lenses with different protruding heights. As an example, when the polarizing portion 24 includes a polarizing structure 241, the outgoing light generated by the light-emitting unit 21 is reflected to the same light-emitting surface 2412 via the same reflecting surface 2411, and is emitted to the outside from the same light-emitting surface 2412. Since the polarizing structure 241 only includes one reflecting surface 2411 and one light-emitting surface 2412, when one light-emitting surface 2412 and one reflecting surface 2411 are projected in a direction perpendicular to the central axis O1, the projection area needs to cover the light-entering portion 23, and a light-entering surface 2412 with a larger light-entering surface 2412 area and a reflecting surface 2411 with a larger reflecting surface 2411 area are required. That is, the polarizing structure 241 needs to have a larger protruding height relative to the light-entering portion 23 to facilitate the reflection and emission of the outgoing light. It can be understood that, when the connection angle between the reflective surface 2411 and the light emitting surface 2412 is larger, the protruding height of the polarizing structure 241 relative to the light incident portion 23 is lower, and the space occupied by the lamp 100 is smaller. The angle value of the connection angle between the reflective surface 2411 and the light emitting surface 2412 can be selected according to actual lighting needs or decorative needs or volume requirements of the lamp 100.

[0053] See also Figure 8 and Fig. 9 As another example, the polarizing portion 24 includes a plurality of polarizing structures 241, and the plurality of polarizing structures 241 are sequentially arranged on the light incident portion 23 along a direction away from the central axis O1. The plurality of polarizing structures 241 are connected to each other, the plurality of reflecting surfaces 2411 in the plurality of polarizing structures 241 are parallel to each other, and the plurality of light emitting surfaces 2412 in the plurality of polarizing structures 241 are parallel to each other, so that the light paths of the plurality of light beams generated by the light emitting unit 21 that are emitted from different reflecting surfaces 2411 to different light emitting surfaces 2412 are parallel to each other. At the same time, the light is emitted to the outside through the light emitting surface 2412 to form a plurality of parallel light beams for illumination or a plurality of decorative light beams. Adjacent parallel light beams will not overlap or be blocked, which can reduce the phenomenon of light spot cross-talk and color cross-talk, improve the lighting effect or decorative effect, and improve the user experience.

[0054] In other embodiments, the arrangement directions of the multiple polarizing structures 241 may be different, so that the multiple reflective surfaces 2411 in the multiple polarizing structures 241 are adjacent to each other, or the light emitting surfaces 2412 in the multiple polarizing structures 241 are adjacent to each other. The light paths of the multiple beams of emitted light generated by the light-emitting unit 21 that are emitted from different reflective surfaces 2411 to different light emitting surfaces 2412 are intertwined or diffused away from each other, forming a variety of lighting effects or decorative light effects. It should be noted that the arrangement direction of the polarizing structure 241 is not specifically limited in this embodiment, and different lighting effects or decorative light effects can be achieved by changing the arrangement direction of the polarizing structure 241 at different positions.

[0055] Furthermore, the protruding heights of the multiple polarizing structures 241 may be different or different. As an example, the protruding heights of the multiple polarizing structures 241 may be gradually reduced in the direction away from the central axis O1, that is, when the polarizing structure 241 with a smaller protruding height in the adjacent polarizing structures 241 is projected onto the polarizing structure 241 with a larger protruding height, it can fall into the projection range of the polarizing structure 241 with a larger protruding height, so that part of the outgoing light in the light-emitting unit 21 can be emitted to the illumination area or the decoration area after a single polarization of the polarizing structure 241, and part of the outgoing light close to the light input portion 23 is also emitted to the illumination area or the decoration area after multiple polarization corrections of different polarizing structures 241, thereby improving the utilization rate of light and the illumination brightness or decoration brightness of the illumination area. It can be understood that the more the number of polarizing structures 241, the lower the protruding height of the polarizing structure 241 can be, so as to achieve the flattening and small size of the optical lens 22. The connection angles between the light emitting surface 2412 and the reflective surface 2411 in each polarizing structure 241 can be the same or different. A microstructure can be set on each light emitting surface 2412 or not. When a microstructure is set, the form of the microstructure can be the same or different to form a variety of light emitting effects.

[0056] Please refer again Figure 2 In the present embodiment, the optical lens 22 further has a receiving groove 25, and the receiving groove 25 is located on the side of the optical lens 22 facing the light-emitting unit 21. Specifically, the light-emitting unit 21 is partially accommodated in the receiving groove 25, so that the outgoing light generated by the light-emitting unit 21 can be concentrated on the receiving groove 25, thereby improving the light utilization rate. Specifically, the receiving groove 25 includes a bottom wall 251 and a peripheral wall 252. The bottom wall 251 is located at the bottom of the receiving groove 25, and is a curved surface protruding toward the light-emitting unit 21, so as to collect most of the outgoing light emitted by the light-emitting unit 21. The peripheral wall 252 is arranged around the periphery of the bottom wall 251, and the peripheral wall 252 is used to collect part of the outgoing light from the light-emitting unit 21, specifically, the outgoing light having a large angle with the central axis O1.

[0057] As an example, the bottom wall 251 is located at one side of the light emitting unit 21, and is provided with a protrusion 2511 facing the light emitting unit 21, the protrusion 2511 can be a spherical protrusion 2511 or a non-spherical protrusion 2511, and both sides of the protrusion 2511 are curved surfaces facing the mounting plate 10. The protrusion 2511 can collect most of the outgoing light of the light emitting unit 21, and the curved surface can collect the outgoing light that has an angle with the central axis O1, thereby ensuring that the outgoing light emitted from the light emitting unit 21 at various angles and transmitted outwardly through the light incident portion 23 can be more uniform and reach a preset light output angle. It can be understood that the protrusion 2511 structure is equivalent to a focusing lens, which can converge the light and can converge the outgoing light of the light-emitting unit 21 within a specific range of the reflective surface 2411, that is, the incident angle of the light falls within a specific angle range, so that the light reflected by the reflective surface 2411 can also be gathered within a specific lighting range, thereby increasing the lighting brightness of the light source and improving the lighting effect or decorative effect.

[0058] Specifically, the center point of the bottom wall 251 of the receiving groove 25 faces the light-emitting unit 21, and a protrusion 2511 facing the light-emitting unit 21 is provided at the center point, and both sides of the protrusion 2511 are curved surfaces facing the mounting plate 10, so that the cross-sectional shape of the bottom wall 251 of the receiving groove 25 is approximately a C-shaped structure. As an example, the spacing between the receiving groove 25 and the light-emitting unit 21 is as small as possible. On the one hand, the structure of the optical lens 22 can be made compact, the volume of the optical lens 22 can be reduced, and the lamp 100 can be flattened; at the same time, the installation space can be saved and applied to more usage scenarios; on the other hand, it is convenient for the outgoing light generated by the light-emitting unit 21 to quickly enter the polarizing part 24 from the light-emitting part, shortening the optical path length of the outgoing light, improving the outgoing efficiency and reducing the light energy loss.

[0059] In the present embodiment, the optical lens 22 further includes a total reflection surface 2413. The total reflection surface 2413 is located on the side of the optical lens 22 facing the light-emitting unit 21 and is connected to the peripheral wall 252. The total reflection surface 2413 may specifically be a conical surface provided on the outer peripheral wall of the light-entering portion 23, and the small end of the outer diameter of the conical surface is close to the light-emitting unit 21. The total reflection surface 2413 is used to direct part of the emitted light of the light-emitting unit 21 to be incident on the optical lens 22 via the peripheral wall 252. Specifically, part of the emitted light generated by the light-emitting module 20 enters the optical lens 22 via the peripheral wall 252, and the arrangement of the peripheral wall 252 and the light-emitting surface 2412 is basically not on the same optical path. Therefore, the light incident through the peripheral wall 252 cannot be transmitted to the light-emitting surface 2412 to provide illumination light or decorative light for the illumination area or the decorative area without interfering with its incident optical path, resulting in a waste of light.

[0060] In order to improve the utilization rate of light energy, a total reflection surface 2413 is provided on the outer side of the peripheral wall 252. After a part of the outgoing light generated by the light-emitting unit 21 is incident on the total reflection surface 2413 through the peripheral wall 252, the propagation path is changed so that it can be emitted to the light-emitting surface 2412. Specifically, most of the outgoing light generated by the light-emitting unit 21 enters the reflective surface 2411 of the optical lens 22 through the bottom wall 251, and then reflects to the light-emitting surface 2412 through the reflective surface 2411. A small part of the outgoing light enters the optical lens 22 through the peripheral wall 252, and changes the light path at the total reflection surface 2413 so that it can be directly emitted to the light-emitting surface 2412 or emitted to the reflective surface 2411 and then reflected to the light-emitting surface 2412 again. On the one hand, the lighting range / decorative range and lighting brightness / decorative brightness of the lamp 100 can be increased, and the lighting effect or decorative effect can be improved; on the other hand, the outgoing light having an angle with the central axis O1 can be emitted to the lighting area or the decorative area, which can improve the utilization rate of light. Furthermore, the light emitted from the total reflection surface 2413 can change the light path again and emit to different areas through the microstructures in different areas of the light-emitting surface 2412 or the microstructures set at different angles, further increasing the lighting range or decorative range of the lamp 100 and improving the lighting and decorative effects of the lamp 100.

[0061] See also Fig.10 In this embodiment, in order to improve the lighting brightness of the lamp 100, each light-emitting module 20 may also include a plurality of light-emitting units 21 and a plurality of optical lenses 22, and each light-emitting unit 21 and each optical lens 22 are arranged in a one-to-one correspondence. As an example, a plurality of light-emitting units 21 and optical lenses 22 connected in a matching manner are arranged in a single row and constitute a light-emitting module 20, providing lighting effects for the same lighting partition or decorative partition. Specifically, three light-emitting units 21 are connected in a matching manner and three optical lenses 22 are arranged in a single row to form a light-emitting module 20. As another example, a plurality of light-emitting units 21 and optical lenses 22 connected in a matching manner are arranged in multiple rows and constitute a light-emitting module 20, providing lighting effects for the same lighting partition or decorative partition. This embodiment does not limit the number of light-emitting units 21 and optical lenses 22 connected in a matching manner. It can be understood that the more light-emitting units 21 and optical lenses 22 connected in a matching manner, the greater the lighting brightness of the lighting partition formed. Different light-emitting modules 20 can be configured with different numbers of light-emitting units 21 and matching optical lenses 22, so that the illumination brightness of each lighting partition is different and different lighting effects or decorative light effects are formed to improve the user's visual experience. It should be noted that the propagation direction of the light emitted by multiple optical lenses 22 in the same light-emitting module 20 is the same to ensure the integrity of each lighting partition or decorative partition.

[0062] Further, at least two of the multiple light-emitting units 21 of each light-emitting module 20 have different colors. As an example, the color of one of the light-emitting units 21 in the same light-emitting module 20 is blue, and the color of the other light-emitting unit 21 is red. The blue light-emitting unit 21 can generate blue outgoing light, and the red light-emitting unit 21 can generate red outgoing light, and realize the linkage light effect of two different colors in the lighting partition or the decorative partition, thereby improving the user's visual experience. It is understandable that the user can set light-emitting units 21 of multiple colors according to lighting needs or decorative needs, thereby forming a linkage light effect of multiple colors.

[0063] In summary, the embodiment of the present application provides a lamp 100, which is used to illuminate a light receiving surface, and includes a mounting plate 10 and a plurality of light-emitting modules 20. Among them, the plurality of light-emitting modules 20 are arranged on the same mounting plate 10. On the one hand, it is not necessary to set a plurality of mounting plates 10 corresponding to the plurality of light-emitting modules 20 one by one, and the mounting plate 10 can be designed as an integrated molding, thereby reducing production costs and improving production efficiency. On the other hand, by reducing the number of mounting plates 10, the number of installation parts of the lamp 100 is reduced, the installation process can be simplified, and the overall volume of the lamp 100 can be reduced, which facilitates the small-volume development of the lamp 100. In addition, the plurality of light-emitting modules 20 are arranged around the central axis O1, which can form a multi-angle lighting area or a decorative area around the central axis O1, thereby increasing the lighting range and forming a linked lighting effect. Furthermore, the light-emitting module 20 includes a light-emitting unit 21 and an optical lens 22. The light generated by the light-emitting unit 21 is polarized by the optical lens 22 to form an outgoing light beam deflected relative to the central axis O1, which can further improve the lighting range or decorative range of the lamp 100. In addition, the outgoing light beam can form a water droplet-shaped light spot on the light receiving surface, forming a novel lighting effect and improving the user's visual experience. At the same time, it is not necessary to set an inclined optical device to achieve polarization, and the thickness of the lamp 100 will not be increased, which is conducive to the flat design of the lamp 100.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A lamp, characterized in that: The lamp is used to illuminate a light receiving surface, and the lamp comprises: a mounting plate having first and second opposing surfaces; and A plurality of light-emitting modules, wherein the plurality of light-emitting modules are arranged around a designated central axis and disposed on the first surface; Each of the light-emitting modules includes a light-emitting unit and an optical lens, the optical lens having a light incident side and a light emitting side, the light-emitting unit and the optical lens are correspondingly arranged and located on the light incident side, after the light of the light-emitting unit enters the optical lens via the light incident side, the propagation direction of the light emitted via the light emitting side is deflected relative to the central axis and forms a plurality of light spots on the light receiving surface, the plurality of light spots and the plurality of light-emitting modules are arranged in one-to-one correspondence, and each of the light spots includes at least one of the following light spots: a water drop-shaped light spot, an elliptical light spot, and a circular light spot.

2. The lamp according to claim 1, characterized in that The optical lens includes a light incident portion and a polarizing portion connected to each other, the light incident side is formed at the light incident portion, the light emitting side is formed at the polarizing portion, and the light emitting unit is disposed between the mounting plate and the light incident portion; After the outgoing light of the light emitting unit is incident on the polarizing portion via the light incident portion, it is propagated to the outside by the polarizing portion. The polarizing portion is used to deflect the outgoing light relative to the central axis.

3. The lamp according to claim 2, characterized in that The polarizing part includes a polarizing structure, and the polarizing structure includes a reflecting surface. The reflecting surface is arranged obliquely relative to the central axis. After the outgoing light passes through the optical lens, it is reflected by the reflecting surface to a direction away from the central axis.

4. The lamp according to claim 3, characterized in that: The incident angle of the outgoing light on the reflecting surface is greater than the critical angle of the outgoing light from the polarizing portion to the outside air, so that the outgoing light is totally reflected on the reflecting surface; or / and The reflective surface is provided with a total reflection film, and the total reflection film is used to make the outgoing light to be totally reflected on the reflective surface.

5. The lamp according to claim 3, characterized in that: The polarizing structure also includes a light emitting surface, which is connected to the light reflecting surface and is located on the side of the light reflecting surface away from the central axis; the two ends of the light emitting surface are respectively connected to the light incident portion and the light reflecting surface, and the two ends of the light reflecting surface are respectively connected to the light incident portion and the light emitting surface, so that the polarizing structure protrudes relative to the light incident portion.

6. The lamp according to claim 5, characterized in that The number of the polarization structure in the polarization part is one, and the angle between the light emitting surface and the light reflecting surface is an acute angle.

7. The lamp according to claim 5, characterized in that: The number of the polarizing structures in the polarizing portion is multiple, and the multiple polarizing structures are sequentially arranged on the light incident portion along a direction away from the central axis.

8. The lamp according to claim 7, characterized in that The protruding heights of the plurality of polarizing structures relative to the light incident portion gradually decrease in a direction away from the central axis, and the reflecting surfaces in the plurality of polarizing structures are parallel to each other.

9. The lamp according to claim 1, characterized in that: A receiving groove is provided on the side of the optical lens facing the light-emitting unit, and the receiving groove has a bottom wall and a peripheral wall surrounding the periphery of the bottom wall. The bottom wall is a curved surface protruding toward the mounting plate, and the outgoing light is incident on the optical lens via the bottom wall and the peripheral wall.

10. The lamp according to claim 9, characterized in that The optical lens also includes a total reflection surface, which is located on the side of the optical lens facing the light-emitting unit and connected to the peripheral wall. After part of the emitted light from the light-emitting unit enters the interior of the optical lens through the peripheral wall, it is reflected by the total reflection surface to the light-emitting side.

11. The lamp according to any one of claims 1 to 10, characterized in that: Each of the light-emitting modules comprises a plurality of the light-emitting units and a plurality of the optical lenses. The plurality of the optical lenses and the plurality of the light-emitting units are arranged in one-to-one correspondence, and the propagation directions of the light emitted by the plurality of the optical lenses in the same light-emitting module are the same.

12. The lamp according to claim 11, characterized in that Among the multiple light-emitting units of each light-emitting module, at least two of the light-emitting units have different colors.

13. The lamp according to any one of claims 1 to 10, characterized in that When the lamp emits light on a plane perpendicular to the central axis, the multiple light-emitting modules form a plurality of lighting zones on the plane, and the multiple lighting zones are arranged in sequence around the central axis. There is no overlapping area between two adjacent lighting zones, or the overlapping area ratio between two adjacent lighting zones is less than or equal to 10%.

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