Fill light assembly and electronic device

Abstract

A fill light assembly, comprising a light guide member (100) and a light-emitting light source (200), wherein the light guide member (100) has an annular light-exiting surface (110), a first reflective surface (120) and a second reflective surface (130), the annular light-exiting surface (110) and the first reflective surface (120) being located on the same side of the light guide member (100), the annular light-exiting surface (110) being arranged around the first reflective surface (120), and the second reflective surface (130) being located on the side of the light guide member (100) facing the annular light-exiting surface (110); the light guide member (100) has a first axis (W1), and the second reflective surface (130) and the annular light-exiting surface (110) are both rotationally symmetrical about the first axis (W1); the light-emitting light source (200) is located on the side of the light guide member (100) close to the second reflective surface (130) and is arranged opposite the first reflective surface (120); the central optical axis of the light-emitting light source (200) is a second axis (W2), and the distance between the second axis (W2) and the first axis (W1) is greater than zero; and light emitted by the light-emitting light source (200) is reflected by the first reflective surface (120) and the second reflective surface (130) and is then emitted from the annular light-exiting surface (110). Further provided is an electronic device.

Description

Light supplement lamp assembly and electronic device

[0001] Cross Reference to Related Applications

[0002] The present application claims priority from the Chinese patent application No. 202410821267.0 filed on June 24, 2024, and entitled "Light supplement lamp assembly and electronic device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application belongs to the technical field of optical devices, and specifically relates to a light supplement lamp assembly and an electronic device. BACKGROUND

[0004] With the continuous improvement of the image function of electronic devices such as mobile phones, the demand for taking pictures with electronic devices is also increasing, and the shooting scenes are endless. For scenes such as dark environment and night shooting, it is difficult to take clear photos, and the video or live scenes are also difficult to have a good experience.

[0005] In order to make the electronic device have better user experience, in the related technology, the electronic device is provided with a light supplement lamp, and the light supplement lamp can perform light supplement operation in scenes such as dark environment and night shooting, thereby improving the imaging effect of the electronic device.

[0006] In the related technology, the ring-shaped light supplement lamp has gradually replaced the traditional flash light supplement lamp due to its unique advantages such as soft, natural light, moderate brightness, and sustainable lighting. However, the symmetrical ring-shaped light supplement lamp has uniform light emission, but the light emitting source arranged at the center of the ring occupies the position of the battery compartment, affecting the arrangement of the battery; if the light emitting source is arranged at the eccentric position of the ring-shaped light supplement lamp, the battery compartment can be avoided, but it will cause the problems of uneven light emission and dark upper and bright lower in the light supplement area. SUMMARY

[0007] In a first aspect, the embodiments of the present application disclose a light supplementing lamp assembly, comprising: a light guide, the light guide having a ring-shaped light emitting surface, a first reflecting surface and a second reflecting surface, the ring-shaped light emitting surface and the first reflecting surface being located on the same side of the light guide, and the ring-shaped light emitting surface being arranged around the first reflecting surface; the second reflecting surface being located on the side of the light guide opposite to the ring-shaped light emitting surface; the light guide having a first axis, the second reflecting surface and the ring-shaped light emitting surface being rotationally symmetrical about the first axis, the first reflecting surface comprising a first concave surface and a second concave surface arranged side by side, the first concave surface having a greater light reflection amount than the second concave surface; the second concave surface being located on the side of the first concave surface away from the first axis; a light emitting source, the light emitting source being located on the side of the light guide close to the second reflecting surface and being arranged opposite to the first reflecting surface; a central optical axis of the light emitting source being a second axis, a distance between the second axis and the first axis being greater than zero; light emitted by the light emitting source being reflected by the first reflecting surface and the second reflecting surface and then emitted from the ring-shaped light emitting surface.

[0008] In a second aspect, the embodiments of the present application disclose an electronic device, comprising a housing, a circuit board and the light supplementing lamp assembly, the light guide being arranged on the housing, and the light emitting source being arranged on the circuit board.

[0009] In the embodiments of the present application, the first reflecting surface is arranged opposite to the light emitting source, and the first reflecting surface is arranged eccentrically relative to the light guide, so that the first reflecting surface can be directly opposite to the light emitting source, and the reflected light of the first reflecting surface is more uniform. Meanwhile, since the first concave surface has a greater light reflection amount than the second concave surface, the light emitting efficiency of the side of the ring-shaped light emitting surface away from the light emitting source is improved. Therefore, the light supplementing lamp assembly disclosed by the present application can effectively improve the light emitting uniformity of the light supplementing lamp assembly. BRIEF DESCRIPTION OF DRAWINGS

[0010] FIG. 1 is a structural schematic diagram of a light supplementing lamp assembly in the related art;

[0011] FIG. 2 and FIG. 3 are exploded views of a light supplementing lamp assembly disclosed by the embodiments of the present application;

[0012] FIG. 4 is a sectional view of a light supplementing lamp assembly disclosed by the embodiments of the present application;

[0013] FIG. 5 is a sectional view of another light supplementing lamp assembly disclosed by the embodiments of the present application;

[0014] FIG. 6 to FIG. 16 are structural schematic diagrams of a light guide of a light supplementing lamp disclosed by the embodiments of the present application.

[0015] Explanation of reference numerals: 100 – light guide, 101 – first region, 102 – second region, 103 – third region, 104 – fourth region, 105 – fifth region, 106 – sixth region, 110 – annular light exit surface, 111 – first tooth-shaped portion, 120 – first reflecting surface, 121 – first concave surface, 122 – second concave surface, 123 – planar region, 130 – second reflecting surface, 131 – second tooth-shaped portion, 140 – light entrance surface, 200 – light emitting source, 300 – reflector, 310 – avoidance gap, 400 – light shielding member, 410 – first light shielding portion, 420 – second light shielding portion, 430 – annular light transmission region, 500 – lampshade, 600 – circuit board, W1 – first axis, W2 – second axis. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0017] The terms “first”, “second”, and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein. In addition, “and / or” in the specification and claims indicates at least one of the connected objects, and the character “ / ” generally indicates that the front and rear associated objects are in an “or” relationship.

[0018] In the related art, as shown in FIG. 1, the light supplement lamp assembly includes a light guide 100 and a light emitting source 200. The light emitting source 200 can be an LED (Light Emitting Diode, semiconductor light emitting diode) lamp, a high-pressure sodium lamp, a metal halide lamp, etc. Of course, the light emitting source 200 of the light supplement lamp assembly can also be other structures, which are not limited herein. The light guide 100 is a light transmission component, and the light emitted by the light emitting source 200 is transmitted through the light guide 100.

[0019] Specifically, the light guide member 100 has a ring-shaped light exit surface 110, a first reflecting surface 120 and a second reflecting surface 130. The ring-shaped light exit surface 110 and the first reflecting surface 120 are located on the same side of the light guide member 100, and the ring-shaped light exit surface 110 is arranged around the first reflecting surface 120. The second reflecting surface 130 is located on the side of the light guide member 100 opposite to the ring-shaped light exit surface 110. The first reflecting surface 120 and the second reflecting surface 130 can reflect light to each other. The light emitting source 200 is located on the side of the light guide member 100 close to the second reflecting surface 130. At this time, the light emitting side of the light emitting source 200 faces the first reflecting surface 120.

[0020] In the specific working process, the light emitted by the light emitting source 200 is reflected by the first reflecting surface 120 and the second reflecting surface 130 and then emitted from the ring-shaped light exit surface 110 to form a light ring on the ring-shaped light exit surface 110, which has soft light feeling, moderate brightness and sustainable light emission.

[0021] In the related art, the light guide member 100 has a first axis W1, and the first reflecting surface 120, the second reflecting surface 130 and the ring-shaped light exit surface 110 are rotationally symmetrical about the light emitting source 200. The first axis W1 here can be any axis along the thickness direction of the light guide member 100. Specifically, the first axis W1 can be the central axis of the light guide member 100, which can be understood as the axis passing through the physical center of the light guide member 100. In the normal installation case, the first axis W1 coincides with the central optical axis of the light emitting source 200, so that the light emitting source 200 is directly opposite to the first reflecting surface 120, thereby making the reflected light around the first reflecting surface 120 relatively uniform, and further making the light emission of the light supplement lamp assembly more uniform.

[0022] However, in order to avoid the battery compartment of the electronic device, the light emitting source 200 is usually arranged eccentrically. Specifically, the central optical axis of the light emitting source 200 is a second axis W2, which refers to the physical center line of the light emitting source 200. The distance between the second axis W2 and the first axis W1 is greater than zero. At this time, the central optical axis of the light emitting source 200 has a certain distance from the first axis W1, so that the light emitting source 200 is offset by a certain distance relative to the first reflecting surface 120, thereby making the first reflecting surface 120 not directly opposite to the light emitting source 200, and further causing the uniformity of the reflected light around the first reflecting surface 120 to be poor, resulting in poor light emission uniformity of the light supplement lamp assembly.

[0023] The light supplement lamp assembly and the electronic device provided by the embodiments of the present application will be described in detail below in combination with the drawings and specific embodiments and application scenarios.

[0024] Please refer to FIG. 2 to FIG. 16, in the light supplement assembly disclosed by the embodiments of the present application, the light emitting source 200 is arranged opposite to the first reflecting surface 120. At this time, since the light emitting source 200 is arranged eccentrically relative to the annular light emitting surface 110, the first reflecting surface 120 is also arranged eccentrically relative to the annular light emitting surface 110, so that the first reflecting surface 120 is offset by a certain distance relative to the first axis W1, that is, the first reflecting surface 120 is not rotationally symmetrical about the first axis W1, but is arranged eccentrically relative to the first axis W1. The first axis W1 here is equivalent to the center line of the annular light emitting surface 110, so that the first reflecting surface 120 is arranged eccentrically relative to the annular light emitting surface 110.

[0025] In the embodiments disclosed by the present application, since the first reflecting surface 120 is arranged eccentrically, the first reflecting surface 120 can be directly opposite to the light emitting source 200, so that the light received by the first reflecting surface 120 in the circumferential direction is relatively uniform, and the reflected light of the first reflecting surface 120 in the circumferential direction is relatively uniform, thereby effectively improving the light emitting uniformity of the light supplement assembly.

[0026] In the embodiments disclosed by the present application, the first reflecting surface 120 includes the first concave surface 121 and the second concave surface 122 arranged side by side, and the light reflecting amount of the first concave surface 121 can be greater than that of the second concave surface 122. The second concave surface 122 is located on the side of the first concave surface 121 away from the first axis W1. At this time, the second concave surface 122 is closer to the side of the annular light emitting surface 110 facing the light emitting source 200, and the first concave surface 121 is closer to the side of the annular light emitting surface 110 away from the light emitting source.

[0027] The light reflecting amount here can be understood as the intensity of light reflection, that is, the light reflecting intensity of the first concave surface 121 is greater than that of the second concave surface 122. The light reflecting amount here can be controlled by at least one of reflectivity, area of the reflecting surface, and angle of the reflecting surface. For example, the greater the reflectivity, the more light is reflected, and thus the greater the light intensity. Similarly, the smaller the reflectivity, the less light is reflected, and thus the smaller the light intensity. For another example, the greater the area of the reflecting surface, the more light is reflected, and thus the greater the light intensity. Similarly, the smaller the area of the reflecting surface, the less light is reflected, and thus the smaller the light intensity. For another example, the more inclined the reflecting surface is, the greater the reflecting angle is, and thus the shorter the reflecting path is, so that the light loss is smaller, and thus the light intensity is greater.

[0028] Specifically, the first concave surface 121 is towards the right half of the annular light emitting surface 110 which is farther away, and the second concave surface 122 is towards the left half of the annular light emitting surface 110 which is closer. Since the light reflecting amount of the first concave surface 121 is greater than that of the second concave surface 122, the brightness of the light reflected by the first concave surface 121 is greater than that of the second concave surface 122, so the first concave surface 121 can compensate for the problem of smaller brightness on the right half due to the distance, so that the brightness of the left half and the right half of the annular light emitting surface 110 is close or consistent.

[0029] In this scheme, since the light reflecting amount of the first concave surface 121 is greater than that of the second concave surface, it is more conducive to improve the light emitting efficiency of the side of the annular light emitting surface 110 away from the light emitting source 200, so that the light emitting brightness of the light supplement lamp assembly is more uniform, thereby improving the performance of the light supplement lamp assembly.

[0030] In the above embodiment, the first concave surface 121 and the second concave surface 122 can both be conical surfaces, the first concave surface 121 and the second concave surface 122 have the same vertex angle and the same height, and the radius of the bottom surface of the first concave surface 121 is the same as that of the second concave surface 122. At this time, the shape and area of the first concave surface 121 and the second concave surface are the same. Here, it is understood that the first reflecting surface 120 is a conical surface. It can also be understood that the first concave surface 121 and the second concave surface 122 are centrally symmetric about the first axis W1. At this time, in order to make the light reflecting amount of the first concave surface 121 greater than that of the second concave surface 122, the first concave surface 121 and the second concave surface 122 can be coated with different reflecting materials. For example, the first concave surface 121 can be coated with a mirror reflecting material, which can achieve total reflection of light, so that more light is reflected to the second reflecting surface 130, thereby improving the brightness of the annular light emitting surface 110 corresponding thereto. The second concave surface 122 can be coated with a diffuse reflecting material, which reduces the light reflected to the second reflecting surface 130, thereby reducing the brightness of the annular light emitting surface 110 corresponding thereto.

[0031] In another alternative embodiment, as shown in FIG. 5, the first concave surface 121 and the second concave surface 122 can both be conical surfaces. At this time, the first concave surface 121 is a first conical surface, and the second concave surface 122 is a second conical surface. The first conical surface and the second conical surface have the same vertex angle and the same height. Specifically, the first concave surface 121 is formed by rotating a first curve about the second axis W2 by a first angle. The second concave surface 122 is formed by rotating a second curve about the second axis W2 by a second angle. The sum of the first angle and the second angle is 360°.

[0032] The common vertex angle of the first conical surface and the second conical surface refers to the intersection of the first curve forming the first conical surface and the second curve forming the second conical surface at the same point, which is the vertex of the vertex angle. The distance between the vertex and the bottom surface of the first conical surface is the first distance, and the distance between the vertex and the second conical surface is the second distance. The first conical surface and the second conical surface are equivalent in height, which means that the first distance and the second distance are the same. That is, the bottom surface of the first conical surface and the bottom surface of the second conical surface are in the same plane. The radius of the bottom surface of the first conical surface is greater than the radius of the bottom surface of the second conical surface. At this time, the distance between the edge of the bottom surface of the first conical surface and the vertex is greater than the distance between the edge of the bottom surface of the second conical surface and the vertex. It can also be understood that the distance between the second axis W2 and the edge of the bottom surface of the first conical surface is greater than the distance between the second axis W2 and the edge of the bottom surface of the second conical surface.

[0033] In this scheme, since the radius of the bottom surface of the first conical surface is greater than the radius of the bottom surface of the second conical surface, the area of the first conical surface is greater than the area of the second conical surface, so that the amount of light reflected by the first conical surface is greater than that of the second conical surface. Therefore, the light emitting efficiency of the side of the annular light emitting surface 110 away from the light emitting source 200 can be further increased, thereby making up for the distance deficiency, and further making the light emitting brightness of the annular light emitting surface 110 more uniform. In addition, since the first conical surface and the second conical surface are equivalent in height, in order to make the first conical surface extend towards the side of the annular light emitting surface 110 away from the light emitting source 200 under the condition that the radius of the bottom surface of the first conical surface is greater, the first conical surface is closer to the side of the annular light emitting surface 110 away from the light emitting source 200, thereby further reducing the reflection path of the light on the side of the annular light emitting surface 110 away from the light emitting source 200, and further improving the light emitting brightness uniformity of the annular light emitting surface 110, thereby making the illumination distribution of the fill light assembly more uniform.

[0034] In another optional embodiment, the first concave surface 121 and the second concave surface 122 are both semicircular in cross-section perpendicular to the first axis W1. At this time, the first angle and the second angle are the same, so the first angle and the second angle are both 180°. The bottom surface of the first concave surface 121 and the second concave surface 122 is the cross-section of one of the first concave surface 121 and the second concave surface 122.

[0035] In this scheme, the curvature of the first concave surface 121 and the second concave surface is 180°, and the first concave surface 121 and the second concave surface 122 can cover half of the annular light emitting surface 110, thereby further improving the light emitting brightness uniformity of the annular light emitting surface 110.

[0036] The concentric asymmetric reflection cone is designed in the embodiment of the application. The light rays emitted from the side of the light emitting source 200 away from the annular light emitting surface 110 are adjusted in angle by the first concave surface 121 and the second concave surface 122, so that the number of reflections of the light rays in the light guide 100 is significantly reduced, and the light loss is reduced. In addition, the concentric asymmetric reflection cone in the application also improves the utilization efficiency of the light rays emitted by the light supplement assembly, and improves the optical performance of the light supplement assembly. In addition, the stacking space of different projects is different, and the optical performance requirements are different. This scheme also greatly improves the versatility of the annular light emitting light supplement assembly in different projects.

[0037] In an alternative scheme, the first concave surface 121 is formed by rotating a first curve about the second axis W2 by 180°. The first curve here is the surface linearity of the first concave surface 121. The surface profile of the first concave surface 121 in the application is obtained by rotating the corresponding first curve about the second axis W2 by 180°.

[0038] Similarly, the second concave surface 122 is formed by rotating a second curve about the second axis W2 by 180°. The second curve here is the surface linearity of the second concave surface 122. The surface profile of the second concave surface 122 in the application is obtained by rotating the corresponding second curve about the second axis W2 by 180°.

[0039] In an alternative scheme, as shown in FIG. 14, the parameters of the first curve are shown in Table 1 as follows:

[0040] Table 1

[0041] The data parameter coordinates in Table 1 can determine the first curve. The first curve is obtained by rotating about the central optical axis of the light emitting source 200 from 0° to 180°, thereby obtaining the surface profile of the first concave surface 121. Of course, the maximum curvature, minimum curvature and curve length of the first curve are not limited to the data in Table 1. The data parameters of the first curve can float between plus or minus ten percent.

[0042] Of course, the first curve in the above embodiment is not limited to a spline curve, but can also be a Bezier curve. The Bezier curve can be determined by the starting point position, the starting point tangent angle, the starting point tangent length, the ending point position, the ending point tangent angle, and the ending point tangent length.

[0043] Further, the parameters of the second curve are shown in Table 2 as follows:

[0044] Table 2

[0045] The data parameter coordinates in Table 2 can determine a second curve, and the second curve is obtained by rotating from 180° to 360° around the central optical axis of the light emitting source 200, so as to obtain the surface profile of the second concave surface 122. Of course, the maximum curvature, minimum curvature and curve length of the second curve are not limited to the data in Table 2. The data parameters of the second curve can float between plus or minus ten percent.

[0046] Of course, the second curve in the above embodiment is not limited to a spline curve, but can also be a Bezier curve. The Bezier curve can be determined by the starting point position, the starting point tangent angle, the starting point tangent length, the ending point position, the ending point tangent angle, the ending point tangent length and the like.

[0047] The annular light emitting surface 110 and the second reflecting surface 130 in the above embodiment can also have a spline curve or a Bezier curve after rotating one circle around the first axis W1. The specific forming mode of the annular light emitting surface 110 and the second reflecting surface 130 is not limited herein.

[0048] In the above embodiment, since the light emitting source 200 is arranged eccentrically relative to the annular light emitting surface 110, the light spot on the projection surface of the light supplement assembly is prone to be eccentric. For example, under normal circumstances, the light spot on the projection surface of the light supplement assembly is located at the center position of the annular light emitting surface 110. When the light emitting source 200 is arranged eccentrically relative to the annular light emitting surface 110, the light spot on the projection surface of the light supplement assembly is shifted towards one side of the annular light emitting surface 110, so that the light spot on the projection surface is deviated from the center position of the annular light emitting surface 110, thereby affecting the light supplement performance of the light supplement assembly.

[0049] Based on this, in another alternative embodiment, as shown in FIG. 12, the annular light emitting surface 110 can be provided with a plurality of first tooth-shaped portions 111, which can be strip-shaped teeth, and the plurality of first tooth-shaped portions 111 are arranged in parallel and continuously in the annular light emitting surface 110. The first tooth-shaped portion 111 herein is equivalent to an optical refracting surface, and thus can regulate the angle of the emitted light.

[0050] In a specific working process, the light of the second reflecting surface 130 is emitted from the annular light emitting surface 110 before the light emitting device 100, and needs to pass through the first tooth-shaped portion 111 for re-lighting, so as to regulate the emission direction of the light, and then adjust the light spot on the projection surface of the light supplement assembly towards the center position of the annular light emitting surface 110, so that the light spot on the projection surface will not be shifted even if the light emitting source 200 is arranged eccentrically.

[0051] In this scheme, the multiple parallel tooth structures can regulate the projected surface light spot of the light supplement assembly, so that the projected surface light spot of the light supplement assembly does not deviate from the center, thereby further improving the light supplement performance of the light supplement assembly. In addition, the parallel tooth structure is simple to process and set, so this scheme can solve the problem of light spot deviation while facilitating the processing and manufacturing of the light guide piece 100, thereby reducing the manufacturing cost of the light supplement assembly.

[0052] Optionally, the first tooth-shaped part 111 can be an arc-shaped strip structure, and of course the first tooth-shaped part 111 can also be a straight strip structure.

[0053] Further, the first tooth-shaped part 111 can be a straight strip structure, and the extension direction of the first tooth-shaped part 111 is parallel to the diameter direction of the annular light emitting surface 110. In this scheme, the light rays in the same diameter direction of the annular light emitting surface 110 are regulated by one first tooth-shaped part 111, so that the regulation angle of the light rays in the same diameter direction is the same, thereby making the adjustment angle of the light rays in the same diameter direction the same, and thus more conducive to solving the problem of light spot deviation.

[0054] In another optional scheme, the annular light emitting surface 110 can be provided with a light adjusting concave surface. At this time, the light adjusting concave surface is provided on the annular light emitting surface 110 and has the function of regulating the outgoing light, so it can also play a role in controlling the light spot deviation.

[0055] In another optional scheme, as shown in FIG. 11, the second reflecting surface 130 can be provided with multiple second tooth-shaped parts 131 arranged continuously, and the second tooth-shaped part 131 can be a ring-shaped tooth extending along the circumferential direction of the annular light emitting surface 110. In this scheme, the side wall of each ring-shaped tooth can accurately regulate the light, so that by optimizing the angle of the side wall of the ring-shaped tooth, the refraction angle of the light can be accurately controlled, so that the outgoing light of the light emitting source 200 is closer to the center position of the annular light emitting surface 110, thereby improving the light supplement performance of the light supplement assembly.

[0056] In another optional embodiment, the second reflecting surface 130 can be provided with multiple second tooth-shaped parts 131 arranged continuously, and the second tooth-shaped part 131 can be a ring-shaped tooth extending along the circumferential direction of the annular light emitting surface 110. The annular light emitting surface 110 can be provided with multiple first tooth-shaped parts 111, and the first tooth-shaped part 111 can be a strip-shaped tooth, and the multiple first tooth-shaped parts 111 are arranged in parallel and continuously in the annular light emitting surface 110. In this scheme, the second reflecting surface 130 can regulate the light once, and the annular light emitting surface 110 can regulate the light once, and through the two times of regulation of the light, the problem of light spot deviation can be better solved.

[0057] In another alternative embodiment, the distance between each second toothed portion 131 and the annular light exit surface 110 gradually decreases in the direction in which the first axis W1 points to the edge of the light guide 100. The first axis W1 here can be an axis along the thickness direction of the light guide 100 and passing through the physical center of the light guide 100. The direction in which the first axis W1 points to the edge of the light guide 100 can be understood as the direction in which the central region of the light guide 100 points to the side edge thereof. Therefore, in the direction in which the central region of the light guide 100 points to the side edge thereof, the distance between the annular light exit surface 110 and the annular teeth gradually decreases. Therefore, the closer the annular teeth are to the outer side of the light guide 100, the smaller the distance between the annular teeth and the annular light exit surface 110.

[0058] In this scheme, the plurality of annular teeth are arranged inwardly in the radial direction of the light guide 100, so that the light spot of the light emitting source 200 is closer to the central region of the annular light exit surface 110, thereby further improving the distribution of the projected surface illuminance of the light supplement assembly, and making the distribution of the projected surface illuminance of the light supplement assembly more uniform.

[0059] In the above embodiments, the surface on the side of the light guide 100 on which the first reflecting surface 120 is located can be a first surface, and the surface on the side of the light guide 100 on which the second reflecting surface 130 is located can be a second surface. The light entrance surface 140 is arranged on the second surface, and the light entrance surface 140 is arranged opposite to the first reflecting surface 120. The light emitting source 200 can be arranged opposite to the light entrance surface 140. The light rays of the light emitting source 200 are incident into the light guide 100 through the light entrance surface 140. The second surface has a certain light transmission performance, so that part of the light rays reflected by the first reflecting surface 120 are reflected by the second reflecting surface 130 on the second surface, and the other part of the light rays are transmitted through the second surface, so that the light rays are wasted when being emitted from the light guide 100, thereby reducing the light utilization efficiency of the light supplement assembly.

[0060] Based on this, in another alternative embodiment, the light supplement assembly can further include a reflecting member 300, which can be arranged on the surface on the side of the light guide 100 on which the second reflecting surface 130 is located. The reflecting member 300 can be attached to the second surface. The reflecting member 300 can have a third reflecting surface, which can be located on the side of the reflecting member 300 facing the light guide 100. At this time, the third reflecting surface is arranged opposite to the second surface, so that the second surface can be a reflecting surface.

[0061] The reflecting member 300 can be provided with a relief gap 310, which can be arranged opposite to the light emitting source 200. At this time, the relief gap 310 can expose the area of the second surface opposite to the light emitting source 200, which is the light entrance surface 140, so as to avoid the light emitted by the light emitting source 200 from being blocked by the reflecting member 300, thereby enabling the light emitted by the light emitting source 200 to enter the light guide member 100 through the relief gap 310.

[0062] In the specific working process, the light reflected by the first reflecting surface 120 to the second surface can be returned to the light guide member 100 by the reflecting member 300. At this time, the light can be transmitted to the annular light exit surface 110 after being reflected between the first surface and the second surface for multiple times, so that the light can be reused.

[0063] This scheme can further improve the light utilization rate of the light emitting source 200. At the same time, the energy efficiency of the light supplement lamp can be further improved.

[0064] In the light guide member 100 disclosed in the present application, the second surface is covered by the reflecting member 300 except for the light entrance surface 140 opposite to the light emitting source 200. At this time, the reflected light can be prevented from being emitted from the second surface, so as to further avoid light waste, thereby enabling the light supplement lamp to have better optical performance.

[0065] Optionally, the reflecting member 300 can be a reflecting film, or the reflecting member 300 can also be a reflecting coating plated on the inner surface of the groove.

[0066] In another optional embodiment, the first reflecting surface 120 can further include a planar region 123, which can surround the first concave surface 121 and the second concave surface 122, and the annular light exit surface 110 can surround the planar region 123. At this time, the planar region 123, the first concave surface 121 and the second concave surface 122 can jointly form the first reflecting surface 120. In this scheme, the planar region 123 can avoid the edge of the first reflecting surface 120 having too large reflection angle, thereby further improving the optical performance of the light supplement lamp.

[0067] Specifically, the outer diameter of the planar region 123 is the inner diameter of the annular light exit surface 110, and the inner diameter of the planar region 123 is the outer diameter of the bottom surface of the conical surface formed by the first concave surface 121 and the second concave surface 122.

[0068] In the above embodiments, the second surface can include the first region 101, the second region 102, and the third region 103. The first region 101 can be arranged around the second region 102. The second region 102 can be arranged around the third region 103. The second region 102 can be provided with the second reflecting surface 130 described above. The third region 103 can be provided with the light-incident surface 140 described above. At this time, the reflector 300 can cover the first region 101 and the second region 102. Since the third region 103 is provided with the light-incident surface 140, the cutout 310 is arranged at a position corresponding to the third region 103 of the reflector 300.

[0069] In another optional solution, in the direction along the first axis W1, the orthographic projection of the first concave surface 121 and the orthographic projection of the second concave surface 122 can both be located within the orthographic projection of the light-incident surface 140. This solution can further avoid the reflector 300 from covering the light-emitting light source 200, thereby improving the optical performance of the light supplement assembly.

[0070] In another optional embodiment, the light supplement assembly can further include a light-blocking member 400 and a lampshade 500. The light-blocking member 400 can be located between the lampshade 500 and the light guide 100. The light-blocking member 400 can include a first light-blocking portion 410 and a second light-blocking portion 420. The first light-blocking portion 410 can be arranged around the second light-blocking portion 420. An annular light-transmitting region 430 can be formed between the first light-blocking portion 410 and the second light-blocking portion 420. The annular light-transmitting region 430 can be arranged opposite to the annular light-outgoing surface 110.

[0071] Specifically, the first surface can include a fourth region 104, a fifth region 105, and a sixth region 106. The fourth region 104 can be arranged around the fifth region 105. The fifth region 105 can be arranged around the sixth region 106. The fifth region 105 can be provided with the annular light-outgoing surface 110. The sixth region 106 can be provided with the first reflecting surface 120. The first light-blocking portion 410 can be arranged opposite to the fourth region 104. The second light-blocking portion 420 can be arranged opposite to the sixth region 106.

[0072] In this solution, the first light-blocking portion 410 and the second light-blocking portion 420 can cover the regions of the light guide 100 other than the annular light-outgoing surface 110 on the side surface of the light guide 100 facing the lampshade 500. Thus, the appearance of the light supplement assembly is closer to the color of the appearance of the shell of the electronic device, thereby improving the appearance consistency of the electronic device.

[0073] Optionally, the covering member can be an ink screen printing structure, and can also be other light-blocking structures, which are not limited herein. The lampshade 500 can be made of a transparent material, such as transparent glass, transparent resin, or the like. Here, it can also be understood that the lampshade 500 is an exposed component of the light supplement assembly.

[0074] In another alternative embodiment, the light supplement assembly can further include a diffusion film, which can cover the annular light exit surface 110. In this scheme, the diffusion film can disperse the light rays emitted from the annular light exit surface 110, so that the light emitted by the light supplement assembly is softer, and the light exit field angle of the light supplement assembly can be increased.

[0075] As shown in FIG. 3, in the embodiments disclosed in the present application, the first reflecting surface 120 is a concentric asymmetric reflecting surface, which can solve the technical problem of non-uniform light emission of the light supplement assembly. Meanwhile, the second reflecting surface 130 is an annular tooth structure, and the annular light exit surface 110 is a parallel tooth structure. The annular tooth structure and the parallel tooth structure can ensure precise light guiding, so that the light rays can be efficiently propagated in the light guide 100 and emitted at the desired exit angle, thereby forming a suitable and uniform light energy distribution on the target light supplement surface.

[0076] When the illumination distribution experiment of the projection surface at a projection distance of 1000mm is performed on the scheme disclosed in the present application, the coverage field of view of the light supplement assembly is rectangular, and the maximum field of view is ±30°. It can be seen that the illumination uniformly decays with the increase of the field of view, which meets the requirement of image light supplementing, and the light spot does not have obvious eccentricity. It can be seen that the light supplement assembly disclosed in the present application has uniform illumination distribution on the projection surface, and the light emitting efficiency is good.

[0077] Based on the light supplement assembly disclosed in the embodiments of the present application, the embodiments of the present application further disclose an electronic device. The disclosed electronic device includes the light supplement assembly described in any of the above embodiments.

[0078] The electronic device disclosed in the present application can further include a housing and a circuit board 600. The housing provides a mounting basis for other constituent components of the electronic device. The light guide 100 can be arranged in the housing, and the light emitting sources 200 can be arranged on the circuit board 600. Here, the circuit board 600 can be a main board of the electronic device, or a sub-board of the electronic device. The light emitting sources 200 can be arranged on the circuit board 600, and the circuit board 600 can supply power to the light emitting sources 200 of the light supplement assembly and control the opening and closing of the light emitting sources 200.

[0079] In a specific scheme, the housing can be provided with a mounting hole, and the lampshade 500 described above can be mounted in the mounting hole, and the light guide 100 can be mounted into the housing.

[0080] The electronic device disclosed in the embodiments of the present application can be a smart phone, a tablet computer, an electronic book reader, a wearable device (such as a smart watch), an electronic game console, or the like. The embodiments of the present application do not limit the specific type of the electronic device.

[0081] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims.

Claims

1. A light supplement assembly, comprising: a light guide having a ring-shaped light exit surface, a first reflecting surface and a second reflecting surface, the ring-shaped light exit surface and the first reflecting surface are located on the same side of the light guide, and the ring-shaped light exit surface is arranged around the first reflecting surface; the second reflecting surface is located on the side of the light guide opposite to the ring-shaped light exit surface; the light guide has a first axis, the second reflecting surface and the ring-shaped light exit surface are rotationally symmetrical about the first axis; the first reflecting surface comprises a first concave surface and a second concave surface arranged side by side, the first concave surface has a larger light reflection amount than the second concave surface; the second concave surface is located on the side of the first concave surface away from the first axis; a light emitting source located on the side of the light guide close to the second reflecting surface and arranged opposite to the first reflecting surface; the central optical axis of the light emitting source is a second axis, the distance between the second axis and the first axis is greater than zero; the light emitted by the light emitting source is reflected by the first reflecting surface and the second reflecting surface and then emitted from the ring-shaped light exit surface.

2. The light supplement lamp assembly of claim 1, wherein, The first concave surface and the second concave surface are both conical surfaces, the first concave surface and the second concave surface have a common vertex angle and the same height, and the bottom radius of the first concave surface is greater than the bottom radius of the second concave surface.

3. The light supplement lamp assembly of claim 2, wherein, The first concave surface and the second concave surface are both semicircular in the cross section perpendicular to the first axis.

4. The light supplement lamp assembly of claim 1, wherein, The ring-shaped light exit surface is provided with a plurality of first tooth-shaped portions, the first tooth-shaped portions are strip-shaped teeth, and the plurality of first tooth-shaped portions are arranged in parallel and continuously in the ring-shaped light exit surface.

5. The light supplement lamp assembly of claim 4, wherein, The extension direction of the strip-shaped teeth is parallel to the diameter direction of the ring-shaped light exit surface.

6. The light supplement lamp assembly of claim 1, wherein, The second reflecting surface is provided with a plurality of second tooth-shaped portions arranged continuously, the second tooth-shaped portions are annular teeth, and the annular teeth extend along the circumferential direction of the ring-shaped light exit surface.

7. The light supplement lamp assembly of claim 6, wherein, In the direction in which the first axis points to the edge of the light guide, the distance between each second tooth-shaped portion and the ring-shaped light exit surface gradually decreases.

8. The light supplement lamp assembly of claim 1, wherein, The light supplement assembly further comprises a reflecting member arranged on the surface of the side of the light guide where the second reflecting surface is located, the reflecting member has a third reflecting surface located on the side of the reflecting member facing the light guide; the reflecting member is provided with a relief opening, and the relief opening is arranged opposite to the light emitting source.

9. The light supplement lamp assembly of claim 1, wherein, The first reflecting surface further comprises a planar region surrounding the first concave surface and the second concave surface, and the ring-shaped light exit surface surrounds the planar region.

10. The light supplement lamp assembly of claim 1, wherein, The surface of the side of the light guide where the second reflecting surface is located comprises a first region, a second region and a third region, the first region is arranged around the second region, the second region is arranged around the third region, the second region is provided with the second reflecting surface, and the third region is provided with a light entrance surface, the light entrance surface is arranged opposite to the first reflecting surface and the light emitting source; in the direction along the first axis, the orthographic projection of the first concave surface and the orthographic projection of the second concave surface are both located in the orthographic projection of the light entrance surface.

11. The light supplement lamp assembly of claim 1, wherein, The light supplement assembly further comprises a light shielding member and a lampshade, the light shielding member is located between the lampshade and the light guide member, the light shielding member comprises a first light shielding part and a second light shielding part, the first light shielding part surrounds the second light shielding part, and an annular light transmission area is formed between the first light shielding part and the second light shielding part, the annular light transmission area is arranged opposite to the annular light exit surface; the surface of the side of the light guide member on which the first reflecting surface is located comprises a fourth area, a fifth area and a sixth area, the fourth area is arranged to surround the fifth area, the fifth area is arranged to surround the sixth area, the fifth area is provided with the annular light exit surface, and the sixth area is provided with the first reflecting surface; wherein the first light shielding part is arranged opposite to the fourth area, and the second light shielding part is arranged opposite to the sixth area.

12. The light supplement lamp assembly of any one of claim 1, wherein, The light supplement assembly further comprises a diffusion film, and the diffusion film covers the annular light exit surface.

13. An electronic device comprising a housing, a circuit board and the light supplement assembly according to any one of claims 1 to 12, the light guide member is arranged in the housing, and the light emitting source is arranged on the circuit board.

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