Light assembly and electronic device

Abstract

The present application relates to the technical field of electronic products. Disclosed are a light assembly and an electronic device. The light assembly comprises: a light-emitting module and a light guide lampshade; the light guide lampshade is plate-shaped, and the light guide lampshade comprises a first end surface and a second end surface opposite to each other; the light-emitting module is located on a side portion of a first side surface of the light guide lampshade, the first side surface is connected to the first end surface and the second end surface, and light emitted by the light-emitting module enters through the first side surface and exits through the first end surface.

Description

Lighting components and electronic equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411878499.6, filed in China on December 19, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of electronic product technology, specifically to a lighting component and an electronic device. Background Technology

[0004] In photography, light and shadow play a crucial role in shaping the texture and form of the subject, while also highlighting the subject's personality, expression, and emotions. Soft, even lighting and stable, efficient image processing algorithms are prerequisites for capturing aesthetically pleasing photos with clear subject-matter distinction. To improve image quality, many electronic devices are equipped with supplementary lighting.

[0005] In related technologies, supplementary lighting for electronic devices typically employs a structure where LEDs are stacked on top of a lampshade. Specifically, the LEDs are located at the center below the lampshade, and along the thickness direction, they rest on the motherboard or flexible printed circuit board (FPC), leaving a gap between them and the lampshade. Because the lampshade, LEDs, and circuit board are usually stacked sequentially along the thickness direction of the electronic device, the supplementary lighting structure requires a significant amount of thickness space, hindering the thinning and lightening of electronic devices. Summary of the Invention

[0006] This application provides a lighting component and an electronic device that can reduce the thickness space required for the lighting component in the electronic device, which is beneficial for the thinner and lighter design of the electronic device.

[0007] In a first aspect, this application provides a lighting assembly, including: a light-emitting module and a light guide cover, wherein the light guide cover is plate-shaped and includes a first end face and a second end face facing away from each other;

[0008] The light-emitting module is located on the side of the first side of the light guide cover. The first side is connected to the first end face and the second end face. The light emitted by the light-emitting module enters from the first side and exits from the first end face.

[0009] Secondly, this application provides an electronic device, including a camera module and the lighting assembly described in the first aspect, wherein the lens of the camera module passes through the mounting hole.

[0010] In this embodiment, since the light-emitting module is located on the side of the first side of the light guide lamp cover, it is advantageous to reduce the thickness space required by the light-emitting module and the light guide lamp cover along the thickness direction of the electronic device, which is beneficial to achieving the thinning of the electronic device. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the propagation of the second light in the lighting assembly in an embodiment of this application;

[0012] Figure 2 is a schematic diagram of the propagation of the first light beam in the lighting assembly in an embodiment of this application;

[0013] Figure 3 is a schematic diagram of the structure of the lighting component in an embodiment of this application;

[0014] Figure 4 is a schematic diagram of the distribution of sub-regions of the diffuse reflection region in the first homogenization layer in an embodiment of this application;

[0015] Figure 5 is an exploded view of the connection between the lighting component and the camera module in an embodiment of this application;

[0016] Figure 6 is an exploded view of the electronic device in an embodiment of this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0018] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] The following description, in conjunction with the accompanying drawings, details a lighting component and electronic device provided in this application through specific embodiments and application scenarios.

[0020] Please refer to Figures 1 to 5. This application provides a lighting assembly, including: a light-emitting module 100 and a light guide cover 200. The light guide cover 200 is plate-shaped and includes a first end face 261 and a second end face 241 facing away from each other.

[0021] The light-emitting module 100 is located on the side of the first side 280 of the light guide lamp cover 200. The first side 280 is connected to the first end face 261 and the second end face 241. The light emitted by the light-emitting module 100 enters from the first side 280 and exits from the first end face 261.

[0022] The aforementioned lighting components can serve as fill lights or flashlights for various electronic devices. These electronic devices can be various devices equipped with fill lights or flashlights, such as mobile phones, tablets, laptops, smartwatches, e-readers, and learning machines.

[0023] It is understood that when the aforementioned lighting assembly is installed in an electronic device, the first end face 261 can be located inside the back cover of the electronic device. Since the first end face 261 can be located inside the back cover of the electronic device, that is, the thickness direction of the light-emitting module 100 is consistent with the thickness direction of the electronic device, and the light-emitting module 100 is located on the side of the first side 280 of the light guide lamp cover 200, the stacking of the light-emitting module 100 and the light guide lamp cover 200 in the thickness direction of the electronic device can be avoided, which is beneficial to the thinning of the electronic device. The first end face 261 and the second end face 241 are two opposite end faces in the thickness direction of the light guide lamp cover 200.

[0024] The aforementioned light-emitting module 100 can be any type of light-emitting module 100 capable of emitting light. During the process of the light-emitting module 100 emitting light, the light can penetrate through the first side 280 and enter the light guide lamp cover 200, and can propagate within the light guide lamp cover 200, finally exiting from the first end face 261 to form a supplementary light source.

[0025] Please refer to Figure 1. In some embodiments of this application, the light guide lamp cover 200 is plate-shaped. The first end face 261 and the second end face 241 are two opposite sides in the thickness direction of the light guide lamp cover 200. The first side face 280 is a side of the light guide lamp cover 200 that connects the edge of the first end face 261 and the edge of the second end face 241.

[0026] In this embodiment, since the light-emitting module 100 is located on the side of the first side 280 of the light guide lamp cover 200, it is advantageous to reduce the thickness space required by the light-emitting module 100 and the light guide lamp cover 200 along the thickness direction of the electronic device, which is beneficial to achieving the thinness of the electronic device.

[0027] Optionally, the light guide cover 200 has a mounting hole 270 that passes through the first end face 261 and the second end face 241, and the first end face 261 includes an annular light-transmitting area 2611 surrounding the opening of the mounting hole 270.

[0028] The aforementioned mounting hole 270 can be used to install various components in electronic devices. For example, it can be used to install the lens of the camera module 500, that is, the lens of the camera module 500 can be inserted into the mounting hole 270.

[0029] It is understood that when the aforementioned lighting components are installed on an electronic device, the annular light-transmitting area 2611 can be located inside the back cover of the electronic device, and the lens of the camera module 500 of the electronic device can be inserted into the mounting hole 270. Thus, since the lighting components are arranged around the lens of the camera module 500, it is beneficial to achieve uniform illumination of the camera module 500. Simultaneously, since the annular light-transmitting area 2611 can be located inside the back cover of the electronic device, that is, the thickness direction of the light-emitting module 100 is consistent with the thickness direction of the electronic device, and the light-emitting module 100 is located on the side of the first side surface 280 of the light guide lamp cover 200, it is possible to avoid the light-emitting module 100 and the light guide lamp cover 200 stacking in the thickness direction of the electronic device, which is beneficial to the thinning of the electronic device. The first end face 261 and the second end face 241 are two opposite end faces in the thickness direction of the light guide lamp cover 200.

[0030] The aforementioned light-emitting module 100 can be any type of light-emitting module 100 capable of emitting light. During the process of the light-emitting module 100 emitting light, the light can penetrate the first side 280 and enter the light guide lamp cover 200, and can propagate within the light guide lamp cover 200. In this way, light can pass through at various positions of the annular light-transmitting area 2611, so that the annular light-transmitting area 2611 forms a supplementary light ring.

[0031] It is understood that in the first end face 261 of the light guide lamp cover 200, all areas except the annular light-transmitting area 2611 are opaque, and the second end face 241 is opaque. In this way, the light inside the light guide lamp cover 200 can only pass through the annular light-transmitting area 2611 to the outside of the light assembly to form the supplementary light ring.

[0032] In this embodiment, since the light-transmitting area in this application embodiment is an annular light-transmitting area 2611, that is, the light-emitting module 100 in this application embodiment emits an annular light source, and the inner side of the annular light-transmitting area 2611 is provided with a mounting hole 270, the related devices originally located below the light-emitting module 100 in the electronic device can be installed through the mounting hole 270. Compared with stacking the light-emitting module 100 and related devices along the thickness direction of the electronic device, it is beneficial to further reduce the thickness space required by the light-emitting module 100 and related devices as a whole, which is beneficial to further reduce the thickness of the electronic device.

[0033] Optionally, the light guide lamp cover 200 includes a lamp cover layer 210, a first light-diffusing layer 220, and a first reflective layer 230 stacked sequentially. The first end face 261 is located on the side of the light guide lamp cover 200 opposite to the first light-diffusing layer 220. The area of ​​the lamp cover layer 210 in the first side face 280 is the light-incident area of ​​the first side face 280. The first light-diffusing layer 220 includes a diffuse reflection area 221 and a light-transmitting gap area 222. Light in the lamp cover layer 210 can pass through the light-transmitting gap area 222 and be incident on the first reflective layer 230.

[0034] The lampshade layer 210 can be made of various light-guiding materials. For example, in some embodiments of this application, the lampshade layer 210 can be a transparent plastic layer. The transparent plastic material can include at least one of the following materials: polystyrene (PS), polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene (PE), and polyvinylidene fluoride (PVDF). The first light-diffusing layer 220 can be various types of light-diffusing films. The first reflective layer 230 can be various types of reflective films.

[0035] The diffuse reflection region 221 can be an area with an uneven surface. Specifically, it can be formed by micro-texturing etching on the side of the first light-diffusing layer 220 facing the lampshade layer 210, or by setting a micro-texture coating, or by micro-texture printing. In some embodiments of this application, the diffuse reflection region 221 is a micro-textured etched area on the surface of the first light-diffusing layer 220.

[0036] Specifically, since the angle of light entering the lampshade layer 210 from the light-emitting module 100 may be within a certain range, light with a small angle can pass through the lampshade layer 210 after being reflected by the first reflective layer 230. Light with a large angle may undergo total internal reflection between the two end faces of the lampshade layer 210 to propagate to a position farther away from the light-emitting module 100. The critical angle between the small angle and the large angle depends on the material of the lampshade layer 210. In some embodiments of this application, since the refractive indices of PS, PC, PMMA, PE, and PVDF vary from 1.41 to 1.60, and the lampshade layer 210 is made of at least one of PS, PC, PMMA, PE, and PVDF, the refractive index N2 of the lampshade layer 210 is between 1.41 and 1.60, which is greater than the refractive index of air, N1 = 1. When light travels from the lampshade layer 210 to the boundary, as long as the incident angle (90° - θ2) of the light inside the lampshade layer 210 is greater than or equal to a certain critical angle, the light no longer has a refracted component and undergoes total internal reflection. The specific light path is shown in Figure 1. According to the refraction theorem: N1 sinθ1 = N2 sinθ2

[0037] Based on this, since the larger θ1 is, the larger θ2 is (see Figure 1), the maximum value of θ1 is 90°. Therefore, substituting θ1 as 90° into the above formula yields the maximum value of θ2. Correspondingly, the minimum value of the incident angle (90°-θ2) of the light undergoing total internal reflection can be obtained as 38.7°~45.2°, that is, the range of the above critical angle is 38.7°~45.2°. Therefore, it can be determined that when the incident angle of the light inside the lampshade layer 210 is greater than or equal to... At the critical angle, the light is totally internally reflected. However, when the incident angle of the light inside the lampshade layer 210 is less than the critical angle, it can pass through the light-transmitting gap area 222 of the first light-diffusing layer 220 and enter the first reflective layer 230. The first reflective layer 230 can reflect the incident light. The light reflected by the first reflective layer 230 can pass through the light-transmitting gap area 222 of the first light-diffusing layer 220 and the lampshade layer 210 in sequence, and exit from the annular light-transmitting area 2611. For ease of understanding, the light with an incident angle less than the critical angle will be referred to as the first light ray; the light with an incident angle greater than or equal to the critical angle will be referred to as the second light ray.

[0038] When the second light ray inside the lampshade layer 210 propagates to the diffuse reflection area 221, the diffuse reflection area 221 forms a surface light source. After the second light ray is emitted from the diffuse reflection area 221, the angle relative to the normal is concentrated between 60° and 70°. At this time, it can pass through the end face of the lampshade layer 210 that is away from the second end face 241 and pass through the annular light-transmitting area 2611 to the outside.

[0039] The aforementioned light-transmitting gap area 222 can be a hollow area in the first light-diffusing layer 220. Light rays incident from the lampshade layer 210 onto the light-transmitting gap area 222 can be incident onto the first reflective layer 230. The first reflective layer 230 can reflect the incident light rays, and the light rays reflected by the first reflective layer 230 can pass through the light-transmitting gap area 222 of the first light-diffusing layer 220 and the lampshade layer 210 in sequence, and exit from the annular light-transmitting area 2611.

[0040] In this embodiment, since the first light can pass through the annular light-transmitting area 2611 after one reflection, and the second light can undergo total internal reflection between the two end faces of the lampshade layer 210 to propagate to a position farther away from the light-emitting module 100, and the second light can also pass through the annular light-transmitting area 2611 after passing through the diffuse reflection area 221, the position of the diffuse reflection area 221 can be adjusted to ensure that the light intensity at each position of the annular light-transmitting area 2611 is relatively uniform.

[0041] Because light experiences reflection and refraction losses during propagation within the lampshade layer 210, the light intensity decreases with distance from the light-emitting module 100. Based on this, the following embodiments further design the distribution of the diffuse reflection region 221 to mitigate the problem of excessively large differences in light intensity across different areas of the annular light-transmitting region 2611 caused by light propagation losses.

[0042] Optionally, the light entering the light guide cover 200 from the first side 280 includes a first light and a second light;

[0043] The first light can pass through the light-transmitting gap area 222 and be incident on the first reflective layer 230. After being reflected by the first reflective layer 230, the first light can pass through the light-transmitting gap area 222 and the lampshade layer 210 in sequence and exit from the annular light-transmitting area 2611.

[0044] The second light can undergo total internal reflection in the lampshade layer 210, and the second light undergoes diffuse reflection when it propagates to the diffuse reflection area 221. The diffusely reflected light can pass through the lampshade layer 210 and exit from the annular light-transmitting area 2611.

[0045] The diffuse reflection area 221 includes multiple sub-regions, which are arranged at intervals along a direction perpendicular to the first side surface 280. The further away from the first side surface 280, the denser the distribution of the sub-regions. Among the multiple sub-regions, there is a light-transmitting gap area 222 between any two adjacent sub-regions.

[0046] The first ray mentioned above can be a ray with an incident angle inside the lampshade that is less than the critical angle mentioned above. Please refer to Figure 2. This part of the ray can pass through the annular light-transmitting area 2611 after being reflected once by the first reflective layer 230. Therefore, the position of the first ray in the annular light-transmitting area 2611 is closer to the light-emitting module 100, which can also be called the near-end ray. Since the near-end ray is closer to the light-emitting module 100, the corresponding attenuation is smaller. Therefore, the light intensity of the near-end ray is higher.

[0047] The second ray can be a ray with an incident angle inside the lampshade greater than or equal to the critical angle mentioned above. Since this part can undergo total internal reflection along the path indicated by the arrow in Figure 2, this part can propagate to a relatively far position relative to the light-emitting module 100, and when it propagates to the diffuse reflection area 221, it passes through the annular light-transmitting area 2611. Therefore, the position of the second ray in the annular light-transmitting area 2611 is relatively far from the light-emitting module 100, and can also be called the far-end ray.

[0048] It is understood that the aforementioned sub-regions are micro-texture etched regions, meaning each sub-region is a separate diffuse reflection region. The shapes of different sub-regions can be the same or different, and the specific shape of each sub-region can be set as needed. For example, referring to Figure 4, in some embodiments of this application, the sub-regions are elongated strip-shaped regions, and the length direction of the sub-regions is parallel to the first side surface 280. Furthermore, the farther away from the first side surface 280, the denser the distribution of the sub-regions; that is, the farther away from the first side surface 280, the smaller the spacing between the sub-regions. The first side surface 280 is located to the left of the first light-diffusing layer 220 in Figure 4.

[0049] It should be noted that the denser the sub-regions, the higher the intensity of the second ray as it diffusely reflects through the annular light-transmitting region 2611.

[0050] In this embodiment, since the first light mainly passes through the area of ​​the annular light-transmitting region 2611 that is closer to the light-emitting module 100, the light intensity in the area of ​​the annular light-transmitting region 2611 that is closer to the light-emitting module 100 is stronger. Therefore, fewer sub-regions can be set below the area that is closer to the light-emitting module 100 to reduce the intensity of the second light passing through the area that is closer to the light-emitting module 100. Correspondingly, more sub-regions can be set below the area that is farther from the light-emitting module 100 to increase the intensity of the second light passing through the area that is farther from the light-emitting module 100. In this way, the light intensity at each position of the annular light-transmitting region 2611 can be relatively uniform, thereby alleviating the problem of excessive differences in light intensity between different areas of the annular light-transmitting region 2611 due to light loss during the light propagation process.

[0051] In other embodiments of this application, the diffuse reflection area 221 may also be disposed on the end face of the lampshade layer 210 facing the first light-diffusing layer 220, and the diffuse reflection area 221 includes multiple sub-regions, which are arranged at intervals along a direction perpendicular to the first side surface 280, and the distribution of the sub-regions becomes denser the farther away from the first side surface 280. This arrangement can also achieve the same function as the diffuse reflection area 221 in the above embodiments, and its implementation principle is similar to that of the above embodiments. To avoid repetition, it will not be described again here.

[0052] Optionally, the light guide lamp cover 200 further includes a support plate 240, which is stacked with the first reflective layer 230, and the support plate 240 is located on the side of the first reflective layer 230 that is away from the first light-diffusing layer 220. The end face of the support plate 240 that is away from the first reflective layer 230 is the second end face 241. The support plate 240 includes an extension portion that extends from the first side surface 280 and extends away from the first side surface 280.

[0053] The light-emitting module 100 includes a first light-emitting unit 120, an arc-shaped mounting plate, and a first reflective film 110. One end of the arc-shaped mounting plate is fixedly connected to the extension portion, and the other end of the arc-shaped mounting plate is fixedly connected to the end of the lampshade layer 210 away from the first light-diffusing layer 220. The arc-shaped mounting plate is an arc-shaped plate body that protrudes towards the side away from the first side 280. The first reflective film 110 covers the surface of the arc-shaped mounting plate facing the side 280.

[0054] The first light-emitting unit 120 is located between the first reflective film 110 and the extension, and the first light-emitting unit 120 is connected to the extension, with the light-emitting surface of the first light-emitting unit 120 facing the first reflective film 110.

[0055] It is understood that the cross-sectional shape of the aforementioned arc-shaped mounting plate can be the same as the shape of the first reflective film 110 in Figure 1. The structure of the arc-shaped mounting plate is not shown in Figure 1. By covering the surface of the arc-shaped mounting plate facing the first side 280 with the first reflective film 110, the arc-shaped mounting plate can thus support and protect the first reflective film 110. The material of the arc-shaped mounting plate can be various deformable insulating rigid sheets.

[0056] The support plate 240 can be any kind of insulating rigid board material, and the material of the support plate 240 is non-transparent. The support plate 240 can serve as a support structure for the lighting assembly, and the support plate 240 can also serve as a reinforcing plate for the flexible printed circuit (FPC) 130 in the lighting assembly. Referring to Figure 1, in some embodiments of this application, the light-emitting module 100 further includes an FPC 130, which is stacked with the extension and the extension is fixedly connected to the FPC 130. The first light-emitting unit 120 is electrically connected to the FPC 130 and is fixedly mounted on the surface of the FPC 130.

[0057] Please refer to Figure 3. Since there is a certain gap between the annular light-transmitting area 2611 and the first light-emitting unit 120, if light entering the lampshade layer 210 from the first side 280 directly illuminates one side of the first end face 261, a large amount of light will be absorbed by the non-transparent area on the left side of the annular light-transmitting area 2611. The light absorbed by the non-transparent area cannot propagate to the annular light-transmitting area 2611. Therefore, to ensure that most of the light entering the lampshade layer 210 from the first side 280 can propagate to the annular light-transmitting area 2611, the light entering the lampshade layer 210 from the first side 280 can be directed primarily towards the first reflective layer 230, rather than towards the first end face 261. This ensures that most of the light entering the lampshade layer 210 from the first side 280 can be reflected at least once by the first reflective layer 230, and most of the light reflected once by the first reflective layer 230 can propagate to the annular light-transmitting area 2611.

[0058] Please refer to Figures 1 and 2. The light emitted by the first light-emitting unit 120 can directly illuminate the inner wall of the first reflective film 110. The first reflective film 110 can reflect the received light, and the light reflected by the first reflective film 110 can enter the lampshade layer 210 from the first side 280 in the direction indicated by the arrows in Figures 1 and 2. That is, the light entering the lampshade layer 210 from the first side 280 is mainly directed toward the first reflective layer 230 side, rather than toward the first end face 261 side, so that most of the light entering the lampshade layer 210 from the first side 280 can be reflected by the first reflective layer 230 at least once.

[0059] In this embodiment, by positioning the first light-emitting unit 120 between the first reflective film 110 and the extension, and connecting the first light-emitting unit 120 to the extension, with the light-emitting surface of the first light-emitting unit 120 facing the first reflective film 110, it can be ensured that most of the light entering the lampshade layer 210 from the first side 280 can be reflected at least once by the first reflective layer 230, so that most of the light entering the lampshade layer 210 from the first side 280 can propagate to the annular light-transmitting area 2611, thereby improving the light display effect of the light assembly.

[0060] Optionally, the light-emitting module 100 further includes a second light-emitting unit 140, which is located between the first reflective film 110 and the extension, and is connected to the extension. The light-emitting surface of the second light-emitting unit 140 faces the first reflective film 110.

[0061] The first light-emitting unit 120 and the second light-emitting unit 140 are located on both sides of the first straight line 290, and the maximum distance between the first light-emitting unit 120 and the first straight line 290 is greater than the radius of the mounting hole 270, and the maximum distance between the second light-emitting unit 140 and the first straight line 290 is greater than the radius of the mounting hole 270. The first straight line 290 is a straight line in the plane where the light-emitting module 100 is located, perpendicular to the first side surface 280, and intersecting the axis of the mounting hole 270.

[0062] Please refer to Figure 3. The first straight line 290 may be a symmetrical center line of the mounting surface of the extension, which is the end face of the extension facing away from the second end face 241.

[0063] The maximum distance between the first light-emitting unit 120 and the first straight line 290 can refer to the distance between the farthest position of the light-emitting portion of the first light-emitting unit 120 from the first straight line 290 and the first straight line 290. For example, referring to FIG3, in some embodiments of this application, the first light-emitting unit 120 includes a first light-emitting element 121 and a second light-emitting element 122, and the maximum distance between the first light-emitting unit 120 and the first straight line 290 can refer to the maximum distance between the second light-emitting element 122 and the first straight line 290. Correspondingly, the maximum distance between the second light-emitting unit 140 and the first straight line 290 can refer to the distance between the farthest position of the light-emitting portion of the second light-emitting unit 140 from the first straight line 290 and the first straight line 290. For example, referring to FIG3, in some embodiments of this application, the second light-emitting unit 140 includes a third light-emitting element 141 and a fourth light-emitting element 142, and the maximum distance between the second light-emitting unit 140 and the first straight line 290 can refer to the maximum distance between the fourth light-emitting element 142 and the first straight line 290.

[0064] Please refer to Figure 5. In practical applications, a lens may pass through the mounting hole 270. Due to the lens's obstruction, light from the lampshade layer 210 cannot pass through the mounting hole 270 from the left side to the right side. Therefore, if the light-emitting module 100 is positioned close to the first straight line 290, light will have difficulty propagating to the right side of the mounting hole 270, resulting in weaker light intensity in the annular light-transmitting area 2611 located to the right of the mounting hole 270.

[0065] In this embodiment, by positioning the first light-emitting unit 120 and the second light-emitting unit 140 on opposite sides of the first straight line 290, and with the maximum distance between the first light-emitting unit 120 and the first straight line 290 being greater than the radius of the mounting hole 270, and the maximum distance between the second light-emitting unit 140 and the first straight line 290 being greater than the radius of the mounting hole 270, the light emitted from the areas of the first light-emitting unit 120 and the second light-emitting unit 140 that are farther from the first straight line 290 than the mounting hole 270 will not be blocked by the lens installed in the mounting hole 270 during its propagation toward one side of the mounting hole 270. This allows the light to propagate smoothly to the right side of the mounting hole 270, which helps to ensure that the light intensity on both sides of the annular light-transmitting area 2611 is relatively balanced.

[0066] Optionally, the first light-emitting unit 120 includes at least two light-emitting elements with different color temperatures, and the second light-emitting unit 140 includes at least two light-emitting elements with different color temperatures.

[0067] The number of light-emitting elements included in the first light-emitting unit 120 can be set as needed, and correspondingly, the number of light-emitting elements included in the second light-emitting unit 140 can also be set as needed. For example, referring to Figure 3, the first light-emitting unit 120 includes a first light-emitting element 121 and a second light-emitting element 122, wherein the color temperature of the first light-emitting element 121 is higher than that of the second light-emitting element 122. The second light-emitting unit 140 includes a third light-emitting element 141 and a fourth light-emitting element 142, wherein the color temperature of the third light-emitting element 141 is higher than that of the fourth light-emitting element 142.

[0068] Understandably, users can adjust the color temperature of the lamp assembly through the control interface of the electronic device. For example, a color temperature adjustment control bar can be set in the control interface, and users can adjust the color temperature of the lamp assembly by dragging the color temperature adjustment control bar. When the user increases the color temperature of the lamp assembly, the brightness of the first light-emitting element 121 and the third light-emitting element 141 gradually increases, while the brightness of the second light-emitting element 122 and the fourth light-emitting element 142 gradually decreases until the second light-emitting element 122 and the fourth light-emitting element 142 are turned off, at which point the color temperature is at its maximum. When the user decreases the color temperature of the lamp assembly, the brightness of the first light-emitting element 121 and the third light-emitting element 141 gradually decreases, while the brightness of the second light-emitting element 122 and the fourth light-emitting element 142 gradually increases until the first light-emitting element 121 and the third light-emitting element 141 are turned off, at which point the color temperature is at its minimum.

[0069] In this embodiment, by making the first light-emitting unit 120 include at least two light-emitting elements with different color temperatures, and the second light-emitting unit 140 include at least two light-emitting elements with different color temperatures, the user can easily adjust the color temperature of the light-emitting components as needed, thereby improving the supplementary lighting effect of the light-emitting components.

[0070] Optionally, the light guide lamp cover 200 further includes a diffusion layer 250 and a brightness enhancement layer 260. The diffusion layer 250 and the brightness enhancement layer 260 are respectively located on the side of the lamp cover layer 210 that is away from the first light equalization layer 220. The lamp cover layer 210, the diffusion layer 250 and the brightness enhancement layer 260 are stacked in sequence. The end face of the brightness enhancement layer 260 that is away from the diffusion layer 250 is the first end face 261.

[0071] The diffusion layer 250 can be any type of diffusion film, and may include granular diffusion sheets. The diffusion layer 250 can diffuse the light angle through these diffusion sheets. The brightness enhancement layer 260 can be any type of brightness enhancement structure or film. For example, referring to Figures 1 and 2, in some embodiments of this application, the brightness enhancement layer 260 is a brightness enhancement prism layer. The end face of the brightness enhancement layer 260 opposite to the diffusion layer 250 has arranged prism-shaped protrusions, and these prism-shaped protrusions can have a frosted texture. The brightness enhancement prism layer is a prism brightness enhancement sheet, which can focus diffused light within a certain angle, increasing the brightness of the light within that range, and forming near-parallel light emission near the annular light-transmitting region 2611.

[0072] In this embodiment, by sequentially providing a diffusion layer 250 and a brightness enhancement layer 260 on the side of the lampshade layer 210 opposite to the first light-diffusing layer 220, the diffusion layer 250 can diffuse the light angle, while the brightness enhancement layer 260 can focus the diffused light within a certain angle, thereby increasing the light brightness within that range and forming near-parallel light emission at the near end of the annular light-transmitting area 2611, thus improving the supplementary lighting effect of the light-emitting component.

[0073] Optionally, the first end face 261 is provided with an annular light guide boss 262 protruding along the annular light-transmitting area 2611. The light assembly also includes a circular lens 400 and an annular lens 300. The circular lens 400 is located inside the annular light guide boss 262, and the outer sidewall of the circular lens 400 is in contact with the inner sidewall of the central hole of the annular light guide boss 262. The annular light guide boss 262 is located inside the central hole of the annular lens 300, and the inner sidewall of the central hole of the annular light guide boss 262 is in contact with the outer sidewall of the annular light guide boss 262.

[0074] The annular light guide protrusion 262 can be made of the same material as the brightness enhancement layer 260. Specifically, the annular light guide protrusion 262 can be integrally formed with the brightness enhancement layer 260, so that light propagating to the brightness enhancement layer 260 can be propagated to the outside through the annular light guide protrusion 262. Alternatively, the annular light guide protrusion 262 can also be made of other light guide materials, such as annular transparent glass.

[0075] The aforementioned circular lens 400 can be the light-receiving lens located at the outermost end of the camera module 500. The aforementioned annular lens 300 can be a decorative lens.

[0076] In this embodiment, by providing an annular light guide protrusion 262 on the first end face 261, the light emitted from the annular light-transmitting area 2611 can propagate to the outside along the annular light guide protrusion 262, thereby reducing the risk of light reflection and crosstalk between the emitted light of the light assembly and the incident light of the camera module 500.

[0077] It is understood that in some other embodiments of this application, the above-mentioned annular light guide protrusion 262 may not be provided. In this case, the circular lens 400 and the annular lens 300 may be two different areas of a whole piece of circular glass, that is, a whole piece of circular glass covers the surface of the first end face 261, and the circular glass simultaneously covers the first end face 261 and the opening of the closed mounting hole 270. The specific configuration can be made as needed.

[0078] Optionally, the inner side of the mounting hole 270, the inner wall of the center hole of the annular light guide boss 262, and the surface of the annular lens 300 facing the first end face 261 are respectively provided with a light-blocking coating.

[0079] The light-blocking coating can be a coating formed by applying various types of light-blocking paints in related technologies.

[0080] In this embodiment, by providing a light-blocking coating on the inner sidewall of the central hole of the annular light guide protrusion 262 inside the mounting hole 270, the light-blocking coating can achieve relative isolation between the emitted light of the light component and the incident light of the camera module 500, thereby further reducing the risk of light reflection and crosstalk between the emitted light of the light component and the incident light of the camera module 500. In addition, by providing a light-blocking coating on the surface of the annular lens 300 facing the first end face 261, it can be ensured that the light component can only emit light to the outside through the annular light-transmitting area 2611, thereby forming an annular fill light.

[0081] This application also provides an electronic device, which includes a camera module 500 and the lighting assembly described in the above embodiments, wherein the lens of the camera module 500 passes through the mounting hole 270.

[0082] The electronic device can be any electronic device with a fill light or flash, such as a mobile phone, tablet computer, laptop, smartwatch, e-reader, or learning machine.

[0083] Please refer to Figure 6. This application embodiment takes a mobile phone as an example to further explain the structure of the electronic device. The electronic device includes a back cover 600, a middle frame 700 and a display module 800 stacked in sequence. The light guide cover 200 is located between the display module 800 and the back cover 600. Specifically, the light guide cover 200 can be arranged on the motherboard or the middle frame 700 depending on the stacking situation. For example, holes can be made in the motherboard or simultaneously in the motherboard and the middle frame 700 to install the light guide cover 200 at the corresponding hole position.

[0084] Please refer to Figure 5, which is an exploded view of the connection between the camera module 500 and the light assembly in this embodiment of the application. The lens of the camera module 500 can pass through the mounting hole 270 and face the circular lens 400.

[0085] In this embodiment, since the electronic device includes the lighting component described in the above embodiments, the electronic device can implement each process of the lighting component in the above embodiments and has the same beneficial effects. To avoid repetition, it will not be described again here.

[0086] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A light assembly comprising: A light-emitting module and a light guide cover, wherein the light guide cover is plate-shaped and includes a first end face and a second end face facing away from each other; The light-emitting module is located on the side of the first side of the light guide cover. The first side is connected to the first end face and the second end face. The light emitted by the light-emitting module enters from the first side and exits from the first end face.

2. The light assembly of claim 1, wherein, The light guide cover has a mounting hole that passes through the first end face and the second end face, and the first end face includes an annular light-transmitting area surrounding the opening of the mounting hole.

3. The light assembly of claim 2, wherein, The light guide lamp cover includes a lamp cover layer, a first light-diffusing layer and a first reflective layer stacked in sequence. The first end face is located on the side of the light guide lamp cover that is away from the first light-diffusing layer. The area of ​​the lamp cover layer located on the first side is the light-incident area of ​​the first side. The first light-diffusing layer includes a diffuse reflection area and a light-transmitting gap area. Light in the lamp cover layer can pass through the light-transmitting gap area and enter the first reflective layer.

4. The light assembly of claim 3, wherein, The light entering the light guide cover from the first side includes a first light beam and a second light beam; The first light can pass through the light-transmitting gap area and enter the first reflective layer, and after being reflected by the first reflective layer, the first light can pass through the light-transmitting gap area and the lampshade layer in sequence and exit from the annular light-transmitting area. The second light ray can undergo total internal reflection in the lampshade layer, and the second light ray undergoes diffuse reflection when it propagates to the diffuse reflection area. The diffusely reflected light ray can pass through the lampshade layer and exit from the annular light-transmitting area. The diffuse reflection area includes multiple sub-regions, which are arranged at intervals along a direction perpendicular to the first side. The further away from the first side, the denser the distribution of the sub-regions. Among the multiple sub-regions, there is a light-transmitting gap between any two adjacent sub-regions.

5. The light assembly of claim 3, wherein, The light guide cover also includes a support plate, which is stacked with the first reflective layer. The support plate is located on the side of the first reflective layer that is away from the first light-diffusing layer. The end face of the support plate that is away from the first reflective layer is the second end face. The support plate includes an extension that extends from one side of the first side and extends away from the first side. The light-emitting module includes a first light-emitting unit, an arc-shaped mounting plate, and a first reflective film. One end of the arc-shaped mounting plate is fixedly connected to the extension, and the other end of the arc-shaped mounting plate is fixedly connected to the end of the lampshade layer away from the first light-diffusing layer. The arc-shaped mounting plate is an arc-shaped plate body that protrudes towards the side away from the first side. The first reflective film covers the surface of the arc-shaped mounting plate facing the first side. The first light-emitting unit is located between the first reflective film and the extension, and the first light-emitting unit is connected to the extension, with the light-emitting surface of the first light-emitting unit facing the first reflective film.

6. The light assembly of claim 5, wherein, The light-emitting module further includes a second light-emitting unit, which is located between the first reflective film and the extension, and is connected to the extension. The light-emitting surface of the second light-emitting unit faces the first reflective film. The first light-emitting unit and the second light-emitting unit are located on both sides of the first straight line, and the maximum distance between the first light-emitting unit and the first straight line is greater than the radius of the mounting hole, and the maximum distance between the second light-emitting unit and the first straight line is greater than the radius of the mounting hole. The first straight line is a straight line in the plane where the light-emitting module is located, perpendicular to the first side and intersecting the axis of the mounting hole.

7. The light assembly of claim 6, wherein, The first light-emitting unit includes at least two light-emitting elements with different color temperatures, and the second light-emitting unit includes at least two light-emitting elements with different color temperatures.

8. The light assembly of claim 3, wherein, The light guide lamp cover also includes a diffusion layer and a light enhancement layer. The diffusion layer and the light enhancement layer are respectively located on the side of the lamp cover layer that is away from the first light equalization layer. The lamp cover layer, the diffusion layer and the light enhancement layer are stacked in sequence. The end face of the light enhancement layer that is away from the diffusion layer is the first end face.

9. The light assembly of claim 2, wherein, The first end face is provided with an annular light guide protrusion that protrudes along the annular light-transmitting area. The light assembly also includes a circular lens and an annular lens. The circular lens is located inside the annular light guide protrusion, and the outer sidewall of the circular lens is in contact with the inner sidewall of the central hole of the annular light guide protrusion. The annular light guide protrusion is located inside the central hole of the annular lens, and the inner sidewall of the central hole of the annular light guide protrusion is in contact with the outer sidewall of the annular light guide protrusion.

10. An electronic device comprising a camera module and a lighting assembly as described in any one of claims 2 to 9, wherein the lens of the camera module passes through the mounting hole.

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