Fill light having light detection function and electronic device

Abstract

The present application relates to the technical field of optical devices, and discloses a fill light having a light detection function and an electronic device. The fill light comprises a light guide member, an optical sensor, and a first light-emitting light source; a first side of the light guide member is provided with a first light incident surface, a second side of the light guide member is provided with an annular light-emitting surface, and the light guide member is provided with a through hole extending from the first side to the second side; the optical sensor is located on the first side of the light guide member and is provided opposite to the through hole, and external light is received by the optical sensor by means of the through hole; and the first light-emitting light source is provided opposite to the first light incident surface, and light emitted by the first light-emitting light source enters the light guide member from the first light incident surface and exits the light guide member by means of the annular light-emitting surface.

Description

Fill light and electronic device with light detection function

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202410343191.5, filed on March 25, 2024, entitled “Fill light and electronic device with light detection function,” and the entire contents of that application are incorporated herein by reference. Technical Field

[0003] The present application belongs to the technical field of optical devices, and specifically relates to a fill light and electronic equipment with a light detection function. Background Art

[0004] As the imaging capabilities of mobile phones and other electronic devices continue to improve, the demand for taking photos with these devices is growing, and new photo-taking scenarios are emerging. However, in low-light environments and night scenes, it is difficult to take clear photos, and it is also difficult to provide a good experience in video recording or live streaming.

[0005] In order to provide electronic devices with a better user experience, in related technologies, electronic devices are provided with fill lights, which can perform fill light operations in scenes such as dark environments and night scene shooting, thereby improving the imaging effect of the electronic devices.

[0006] However, since the fill light occupies a large installation space of the electronic device and the fill light itself has a single function, it is not conducive to the integrated design of the electronic device, thereby making the layout of the electronic device more difficult. Summary of the Invention

[0007] The purpose of the embodiments of the present application is to provide a fill light and an electronic device with a light detection function, which can enrich the functions of the fill light module and improve the integration of the electronic device.

[0008] In order to solve the above technical problems, this application is implemented as follows:

[0009] In a first aspect, the present application discloses a fill light with a light detection function, comprising:

[0010] A light guide member, wherein a first light incident surface is provided on a first side of the light guide member, an annular light emitting surface is provided on a second side of the light guide member, and a through hole is formed on the light guide member extending from the first side to the second side;

[0011] a light sensor, the light sensor being located on the first side of the light guide and arranged opposite to the through hole, and receiving external light through the through hole;

[0012] A first light source is arranged opposite to the first light incident surface, and light emitted by the first light source enters the light guide member from the first light incident surface and is emitted from the light guide member through the annular light emitting surface.

[0013] In a second aspect, the present application discloses an electronic device, comprising a housing, a circuit board and the above-mentioned fill light, wherein the light guide is arranged on the housing, and the first light source and the light sensor are both arranged on the circuit board.

[0014] In an embodiment of the present application, a through hole is formed in the light guide, and the light sensor is disposed opposite the through hole. In this case, the light sensor can receive the light to be detected through the through hole formed in the light guide. The fill light disclosed in the present application integrates a light detection function, so that the fill light can perform both a fill light function and a light detection function, thereby improving the performance of the fill light, facilitating the integrated design of electronic equipment, and reducing the difficulty of electronic equipment layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figures 1 and 2 are schematic structural diagrams of a fill light disclosed in an embodiment of the present application;

[0017] FIG3 is a cross-sectional view of a fill light disclosed in an embodiment of the present application;

[0018] FIG4 is a schematic structural diagram of a light guide member of a fill light disclosed in an embodiment of the present application;

[0019] FIG5 is a top view of a light guide member of a fill light disclosed in an embodiment of the present application;

[0020] FIG6 is a bottom view of a light guide of a fill light disclosed in an embodiment of the present application.

[0021] Explanation of the accompanying drawings: 100-fill light, 110-light guide, 1101-first reflecting surface, 1102-second reflecting surface, 1103-annular light-emitting surface, 1104-first light-entering surface, 1105-through hole, 1106-third reflecting surface, 1107-second light-entering surface, 1108-first side, 1109-second side, 111-main body, 112-extension part, 120-first light source, 130-light sensor, 140-second light source, 150-reflective film, 160-lens, 170-light shielding member, 171-first light shielding part, 172-second light shielding part, 1721-perforation, 1722-annular light-transmitting area, 200-circuit board, 210-support member, W-center optical axis. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of this application can be implemented in an order other than that illustrated or described herein. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0024] The fill light and electronic device provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0025] 1 to 6 , the present invention discloses a fill light 100, which is applied to electronic devices. The fill light 100 includes a light guide 110, a light sensor 130, and a first light source 120.

[0026] The light guide 110 is a light transmitting component, and the light emitted by the first light source 120 is transmitted through the light guide 110. Specifically, the first side 1108 of the light guide 110 is provided with a first light incident surface 1104, and the second side 1109 of the light guide 110 is provided with an annular light emitting surface 1103. The light guide 110 is provided with a through hole 1105 extending from the first side 1108 to the second side 1109. Optionally, the first side 1108 here can be the bottom side of the light guide 110, and the second side 1109 can be the top side of the light guide 110. Therefore, the above-mentioned first light incident surface 1104 can be at least a part of the bottom surface area of ​​the light guide 110, and the annular light emitting surface 1103 can be at least a part of the top surface area of ​​the light guide 110. The bottom side and the top side here can be understood as two sides arranged along the thickness direction of the light guide 110. Of course, the first side 1108 here may also be the left side of the light guide 110 , and the second side 1109 may also be the right side of the light guide 110 , which is not limited in this article.

[0027] The first light source 120 is disposed opposite the first light incident surface 1104. Light emitted by the first light source 120 enters the light guide 110 through the first light incident surface 1104 and exits the light guide 110 through the annular light exit surface 1103. Optionally, the first light source 120 may be an LED (Light Emitting Diode) lamp, a high-pressure sodium lamp, a metal halide lamp, or the like. Of course, the first light source 120 of the fill light 100 may also have other structures, which are not limited herein.

[0028] In the specific fill light process, the light emitted by the first light source 120 passes through the first light incident surface 1104 and is incident into the light guide 110. After being transmitted in the light guide 110, it is emitted from the annular light emitting surface 1103 in the light guide 110 to form a halo with soft light sensation, moderate brightness, and sustainable light on the annular light emitting surface 1103.

[0029] Light sensor 130 is located on first side 1108 of light guide 110, that is, on the side facing away from annular light-emitting surface 1103. Light sensor 130 is positioned opposite through-hole 1105, and ambient light is received by light sensor 130 through through-hole 1105. At least a portion of light sensor 130 can be located within or outside through-hole 1105, as is not limited herein. Light sensor 130 is used to detect ambient light intensity, enabling electronic devices to adjust the brightness of corresponding components. For example, electronic devices can automatically adjust the brightness of a display screen based on ambient light intensity, thereby protecting the user's eyes. For another example, electronic devices can automatically adjust the brightness of a fill light 100 based on ambient light intensity, thereby achieving an automatic fill light effect. Of course, light sensor 130 in this application is only used to detect ambient light intensity and does not involve specific adjustment functions. The specific structure and principles of ambient light sensor 130 are well known in the art and will not be described in detail herein.

[0030] In the embodiment disclosed in this application, a light sensor 130 is provided in the fill light 100. The light sensor 130 receives external light through the through hole 1105 in the light guide 110. This allows the fill light 100 to integrate a light detection function. This allows the fill light 100 to perform both the fill light function and the light detection function, thereby improving the performance of the fill light 100 and facilitating the integrated design of electronic devices. Furthermore, the integrated light detection function in the fill light 100 eliminates the need for components for detecting ambient light in the electronic device, freeing up space within the electronic device and reducing the complexity of its layout.

[0031] In another optional embodiment, the orthographic projection of the through hole 1105 may be located outside the orthographic projection of the annular light-emitting surface 1103. In this case, the through hole 1105 does not pass through the annular light-emitting surface 1103, so that the position of the through hole 1105 does not destroy the integrity of the annular light-emitting surface 1103, thereby improving the optical performance of the fill light 100.

[0032] In the above embodiment, since the annular light emitting surface 1103 is an annular structure, the area outside the annular light emitting surface 1103 includes an inner annular area and an outer annular area. In this case, the orthographic projection of the through hole 1105 can be located in the inner annular area or the outer annular area.

[0033] In one embodiment, the first light incident surface 1104 may also be an annular structure, and the first light incident surface 1104 is disposed opposite the annular light emitting surface. The number of first light sources 120 may be multiple, and the multiple first light sources 120 may be arranged at intervals along the axial direction of the first light incident surface 1104. This embodiment enables the fill light 100 to have a more uniform light output effect.

[0034] In the above embodiment, the annular light-emitting surface 1103 may also be covered with a diffusion film. In this case, the diffusion film can disperse the light emitted from the annular light-emitting surface 1103, thereby making the light emitted by the fill light softer and increasing the light output field angle of the fill light.

[0035] In another optional embodiment, the light guide 110 may also be provided with a first reflective surface 1101 and a second reflective surface 1102; the first reflective surface 1101 may be located on the second side 1109 of the light guide 110, and the annular light emitting surface 1103 surrounds the first reflective surface 1101. The second reflective surface 1102 may be located on the first side 1108 of the light guide 110. The second reflective surface 1102 may surround the first light incident surface 1104. The first light incident surface 1104 and the first reflective surface 1101 may be disposed opposite each other. The annular light emitting surface 1103 and the second reflective surface 1102 may be disposed opposite each other. In this case, light emitted by the first light source 120 is reflected by the first reflective surface 1101 and the second reflective surface 1102 and then emitted from the annular light emitting surface 1103.

[0036] In this solution, light emitted by the first light source 120 is reflected between the first reflective surface 1101 and the second reflective surface 1102, thereby forming a coaxial dual-reflection structure. This coaxial dual-reflection structure reduces the number of light reflections and directs the light to the annular light-emitting surface 1103 to the greatest extent possible, significantly improving the luminous efficiency of the fill light 100. Therefore, even with a single light source, the fill light 100 still has sufficient energy. This effectively reduces the number of light sources in the fill light 100, resulting in a smaller size, lower cost, and better heat dissipation, thereby improving the performance of the fill light 100.

[0037] In the above embodiment, the through hole 1105 can be provided on the side of the annular light-emitting surface 1103 facing away from the first reflective surface 1101. Alternatively, the through hole 1105 can be provided in the aforementioned outer region. In this case, the radial dimension of the light guide 110 needs to be increased to reserve space for the through hole 1105. Therefore, providing the through hole 1105 in the outer region increases the volume of the light guide 110, thereby increasing the volume of the fill light element.

[0038] Based on this, in another optional embodiment, along the direction of the central optical axis W of the first light-emitting light source 120, the orthographic projection of the through hole 1105 can be located between the orthographic projection of the first reflective surface 1101 and the orthographic projection of the annular light-emitting surface 1103, and the through hole 1105 passes through the first light-incident surface 1104. The orthographic projection of the through hole 1105 does not overlap with the second reflective surface 1102. At this time, the position of the through hole 1105 is located between the annular light-emitting surface 1103 and the first reflective surface 1101. Since the orthographic projection of the through hole 1105 does not overlap with the second reflective surface 1102, the position of the through hole 1105 is also between the first reflective surface 1101 and the second reflective surface 1102. The central optical axis W of the first light-emitting light source 120 here refers to the optical axis of the center position of the first light-emitting light source 120, and may also refer to the physical center line of the first light-emitting light source 120. Of course, the central optical axis W of the first light source 120 here may coincide with the central axis of the light guide member 110 , and therefore the central optical axis W here is the central axis of the light guide member 110 .

[0039] In this solution, the orthographic projection of the through hole 1105 is located in the inner ring area of ​​the annular light-emitting surface 1103, so there is no need to increase the area of ​​the outer ring area, thereby making the volume of the light guide 110 smaller, and further making the volume of the fill light 100 smaller.

[0040] In the above embodiment, since the through hole 1105 is located between the first reflecting surface 1101 and the second reflecting surface 1102, the through hole 1105 will affect the transmission of light in the area where it is located. That is to say, in the area where the through hole 1105 is located, the light reflected by the first reflecting surface 1101 is difficult to pass through the through hole 1105, and thus cannot be transmitted to the second reflecting surface 1102. Therefore, the through hole 1105 will destroy the integrity of the original light path, resulting in partial loss of light, and further causing some areas of the annular light-emitting surface 1103 to have difficulty emitting light and inconsistent brightness with other areas, thereby causing uneven light efficiency of the fill light 100 and reducing the optical performance of the fill light 100.

[0041] Based on this, in another optional embodiment, the light guide 110 may also have a second light incident surface 1107, and the second light incident surface 1107 may be located on the first side 1108 of the light guide 110. The fill light 100 disclosed in the present application may also include a second light source 140, and the second light source 140 may be arranged opposite to the second light incident surface 1107, and the light sensor 130 is located between the first light source 120 and the second light source 140. The light emitted by the second light source 140 enters the light guide 110 from the second light incident surface 1107 and is emitted through the annular light emitting surface 1103. At this time, the second light source 140 can supplement the annular light emitting surface 1103, and the part of the light emitted from the annular light emitting surface 1103 that is missing due to the through hole 1105, so that the light emitted from the annular light emitting surface 1103 forms a complete halo.

[0042] In the specific fill light process, the first light source 120 and the second light source 140 are lit at the same time. At this time, a halo with uniform brightness, soft light feeling and sustainable light can be formed on the annular light emitting surface.

[0043] In this solution, the second light source 140 can form a suitable light energy distribution on the light missing area of ​​the annular light emitting surface 1103, thereby completing the light output of the annular light emitting surface 1103, and making the light effect of the fill light 100 more uniform, thereby improving the optical performance of the fill light 100.

[0044] The light emitted by the second light source 140 here cannot cover the entire annular light emitting surface 1103, but can only cover a partial area of ​​the annular light emitting surface 1103. The partial area here is the light-missing area of ​​the annular light emitting surface 1103 caused by the through hole 1105.

[0045] In one solution, the second light incident surface 1107 can be arranged opposite to the light emitting light missing area of ​​the above-mentioned annular light emitting surface 1103. At this time, the light emitted by the second light source 140 passes through the second light incident surface 1107 and directly emits to the light emitting light missing area.

[0046] In another optional embodiment, second light incident surface 1107 may be located on a side of light sensor 130 away from first light incident surface 1104. Light guide 110 may further include a third reflective surface 1106, which may be a concave surface facing second light incident surface 1107. Second light source 140 is disposed opposite second light incident surface 1107. In this case, light emitted by second light source 140 may be reflected by third reflective surface 1106 and emitted from annular light emitting surface 1103.

[0047] In this solution, the light emitted by the second light source 140 can be emitted from the annular light-emitting surface 1103 after passing through the third reflective surface 1106, thereby preventing the second light source 140 from appearing in the area where the annular light-emitting surface 1103 is located, thereby avoiding the risk of device exposure of the second light source 140.

[0048] In one optional solution, the light reflected by the third reflective surface 1106 can be directed toward the reflective annular light-emitting surface 1103. Alternatively, in another optional embodiment, the light reflected by the third reflective surface 1106 is first reflected toward the second reflective surface 1102, and then reflected by the second reflective surface 1102 toward the annular light-emitting surface 1103. In this solution, the light emitted by the second light source 140 is reflected toward the annular light-emitting surface 1103 through two reflections. Compared to a single reflection solution, the two reflections allow for greater flexibility in the placement of the third reflective surface 1106 and the second light source 140, thereby reducing the difficulty in manufacturing the light guide 110.

[0049] In an optional embodiment, the light guide 110 may include a main body 111 and an extension portion 112. The extension portion 112 may be provided at the edge of the main body 111, and the extension portion 112 may extend along the circumference of the main body 111. In this case, the extension portion 112 is provided at the side edge of the main body 111 and extends along the side edge. The above-mentioned first reflective surface 1101, second reflective surface 1102, annular light-emitting surface 1103, first light-incident surface 1104 and through hole 1105 may all be provided on the main body 111, and the third reflective surface 1106 and second light-incident surface 1107 may both be provided on the extension portion 112. In this case, the third reflective surface 1106 and the second light-incident surface 1107 are located at the edge of the light guide 110, while the first reflective surface 1101, the second reflective surface 1102, the annular light-emitting surface 1103 and the first light-incident surface 1104 are all provided near the middle of the light guide 110.

[0050] In this solution, the third reflecting surface 1106 and the second light incident surface 1107 are arranged on the extension portion 112, and the extension portion 112 is located on the outside of the main body 111. Therefore, the second light source 140 is supplemented by the outer edge of the light guide 110, and the first light source 120 is supplemented by the central area of ​​the light guide 110. Therefore, the optical path of the first light source 120 and the optical path of the second light source 140 are not likely to overlap. Therefore, the first light source 120 and the second light source 140 are not likely to affect each other, thereby further improving the optical performance of the fill light 100.

[0051] In one embodiment, the extension portion 112 may be an annular structure, that is, the extension portion 112 is arranged around the main body portion 111. Alternatively, in another optional embodiment, the extension portion 112 is a strip-shaped structure, which can also be understood as the extension portion 112 being a fan-shaped structure, and the extension portion 112 is not a complete ring, but a strip-shaped structure. Here, the length or curvature of the extension portion 112 can be determined according to the size of the through hole 1105. For example, as shown in Figure 5, the angle formed by the diameter of the through hole 1105 and the center of the light guide 110 is θ. The angle formed by the two ends of the extension portion 112 and the center of the light guide 110 is α, where θ≤α≤2θ. At this time, α is within this range so that the light emitted by the second light source 140 can cover the entire light-missing area.

[0052] Optionally, when the main body 111 is a disc-shaped structure, the extension 112 can be an arc-shaped strip structure. When the main body 111 is a rectangular structure, the extension 112 can be a straight strip structure. Of course, the main body 111 and the extension 112 can also have other shapes, which are not limited herein.

[0053] In one embodiment, as shown in FIG4 , the third reflective surface 1106 can be obtained by rotating the first curve by a predetermined angle about the central optical axis W of the first light source 120. The first curve herein represents the surface linearity of the third reflective surface 1106. The surface profile of the third reflective surface 1106 in this application can be obtained by rotating the first curve by a predetermined angle about the central optical axis W of the first light source 120. The predetermined angle here is the aforementioned α. The first curve can be a spline curve.

[0054] The spline curve is determined by parameters such as maximum curvature, minimum curvature, and curve length. The specific parameter values ​​of the third curve can be flexibly selected according to the actual working conditions and are not limited in this article.

[0055] In an optional solution, as shown in FIG4 , the parameters of the third curve are shown in Table 1 below:

[0056] Table 1

[0057] The data parameter coordinates in Table 1 can be used to determine a third curve. By rotating the third curve at a certain angle around the central optical axis W, the surface profile of the third reflective surface 1106 can be obtained. Of course, the parameters of the third curve, such as the maximum curvature, minimum curvature, and curve length, are not limited to the data in Table 1. The data parameters of the third curve can fluctuate within a range of plus or minus ten percent.

[0058] 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 parameters such as the starting position, starting angle, starting tangent length, end position, end angle, and end tangent length.

[0059] In another alternative, the second reflective surface 1102 may include a plurality of annular light-guiding grooves, which may be arranged continuously in a direction perpendicular to the central optical axis W of the first light source 120. Here, the direction perpendicular to the central optical axis W of the first light source 120 may be understood as a direction parallel to the first light incident surface 1104 or the annular light emitting surface 1103. In this case, the walls of each annular light-guiding groove are capable of reflecting light. Therefore, by optimizing the angle of the walls, the reflection angle of light can be precisely controlled, thereby improving the light-guiding performance of the second reflective surface 1102.

[0060] In this solution, precise light guidance can be achieved through the multiple annular light-guiding grooves, thereby further improving the optical performance of the fill light 100. In addition, the structure of the annular light-guiding grooves is simple, and the multiple annular light-guiding grooves are processed in the same plane. Therefore, compared with the solution in which the second reflective surface 1102 is an arc-shaped structure, the processing difficulty of the second reflective surface 1102 in this solution is reduced.

[0061] In the above embodiment, the high-angle light entering the annular light guide groove is easily emitted from the annular light guide groove to the light guide member 110, thereby reducing the light utilization efficiency of the fill light 100. Based on this, in another optional embodiment, the fill light 100 may further include a reflective film 150, which may be located on the second side 1109 of the light guide member 110. The reflective film 150 may have a fourth reflective surface, which may be arranged opposite to the second reflective surface 1102. In this solution, the high-angle light passing through the annular light guide groove can be returned to the light guide member 110 by the fourth reflective surface, thereby improving the light utilization efficiency of the fill light 100 and further improving the luminous brightness of the fill light 100.

[0062] In another optional embodiment, the fill light 100 disclosed in this application may further include a lens 160 and a light shielding member 170. The light shielding member 170 may be located between the light guide 110 and the lens 160. The light shielding member 170 may include a first light shielding portion 171 and a second light shielding portion 172. The first light shielding portion 171 may be disposed around the second light shielding portion 172, and an annular light-transmitting area 1722 may be formed between the first light shielding portion 171 and the second light shielding portion 172. The annular light-transmitting area 1722 may be disposed opposite the annular light-emitting surface 1103. The second light shielding portion 172 may be provided with a through-hole 1721, and the through-hole 1105 may be connected to the through-hole 1721. The lens 160 here is used to protect the light guide 110. The lens 160 may be made of a transparent material, such as transparent glass, transparent resin, or the like. It can also be understood that the lens 160 is an exposed component of the fill light 100.

[0063] In this solution, the first light shielding portion 171 and the second light shielding portion 172 can cover the area of ​​the surface of the light guide 110 facing the lens 160 except the annular light-emitting surface 1103. For example, the first light shielding portion 171 can cover the aforementioned extension portion 112, and the second light shielding portion 172 can cover the aforementioned first reflective surface 1101. As a result, the appearance of the fill light 100 is more similar to the color of the outer shell of the electronic device, thereby improving the appearance consistency of the electronic device.

[0064] Optionally, the shading member 170 may be an ink silk-screen printing structure, or other shading structures, which is not limited herein.

[0065] When conducting an illuminance distribution experiment on the projection surface at a projection distance of 1000mm for the solution disclosed in FIG3 of the present application, the field of view covered by the fill light 100 is rectangular, with a maximum field of view of ±30°. The visible illuminance decays evenly with the increase of the field of view. Therefore, it can be seen that the fill light disclosed in the present application has the characteristics of soft light perception, moderate brightness, and sustainable fill light. In addition, compared with the fill light 100 in the related art, the fill light 100 disclosed in the present application also integrates a light detection function. Therefore, the fill light 100 can realize the light detection function while being able to realize the fill light function, thereby improving the performance of the fill light 100, and is more conducive to the integrated design of electronic equipment, thereby reducing the layout difficulty of electronic equipment.

[0066] In another embodiment, the first reflective surface 1101, the second reflective surface 1102, and the annular light-transmitting surface can all be rotationally symmetric about the central optical axis W of the first light source 120. In the embodiment disclosed in the present application, since the first reflective surface 1101, the second reflective surface 1102, and the annular light-transmitting surface can all be rotationally symmetric about the central optical axis W of the first light source 120, the illumination distribution of the light reflected by the first reflective surface 1101 and the second reflective surface 1102 in their circumferential directions is uniform, thereby making the light of the fill light 100 more uniform.

[0067] In another optional embodiment, the first reflective surface 1101 can also be obtained by rotating the second curve around the central axis of the first light source 120. The second curve here can be a spline curve.

[0068] In an optional solution, as shown in FIG6 , the parameters of the second curve are shown in Table 2 below:

[0069] Table 2

[0070] The data parameter coordinates in Table 2 can be used to determine a second curve. By rotating the second curve about its central axis, the surface profile of the first reflective surface 1101 can be obtained. Of course, the parameters of the second curve, such as the maximum curvature, minimum curvature, and curve length, are not limited to the data in Table 2. The data parameters of the second curve can fluctuate within a range of plus or minus ten percent.

[0071] Of course, the second curve in the above embodiment is not limited to a spline curve, and can also be a Bezier curve. The Bezier curve can be determined by parameters such as the starting position, the starting angle, the starting tangent length, the end position, the end angle, and the end tangent length.

[0072] The second reflective surface 1102 in the present application is not limited to the structure shown in FIG3 , and may also be a curved surface structure. The second reflective surface 1102 may also be obtained by rotating a spline curve or a Bezier curve. The present application does not limit the forming method of the second reflective surface 1102 .

[0073] Based on the fill light 100 disclosed in the embodiment of the present application, the embodiment of the present application further discloses an electronic device, and the disclosed electronic device includes the fill light 100 described in any of the above embodiments.

[0074] The electronic device disclosed in the present application may further include a housing and a circuit board 200. The housing provides a mounting base for other components of the electronic device. The light guide 110 may be disposed in the housing, and the first light source 120 and the light sensor 130 may both be disposed on the circuit board 200. Specifically, the circuit board 200, the first light source 120, and the light sensor 130 may all be located within the housing. The housing may have a mounting hole, and at least a portion of the light guide 110 may be located within the mounting hole, or the light guide 110 may be opposite the mounting hole. Here, the mounting hole can be used for both mounting the light guide 110 and emitting light from the electronic device.

[0075] The circuit board 200 can be a main board or a sub-board of an electronic device. The circuit board 200 can power the first light source 120 and the light sensor 130 and control the opening and closing of the first light source 120 and the light sensor 130 as well as data transmission.

[0076] In another optional embodiment, the second light source 140, the first light source 120, and the light sensor 130 can be arranged at intervals on the circuit board 200. In this solution, the second light source 140, the first light source 120, and the light sensor 130 are all arranged on the circuit board 200, which can reduce the number of circuit boards 200 or circuit structures in the electronic device, thereby simplifying the structure of the electronic device and reducing the cost of the electronic device.

[0077] In another optional embodiment, a support member 210 may be provided on the side of the circuit board 200 facing the light guide 110. The light sensor 130 is disposed on the side of the support member 210 facing the light guide 110. In this embodiment, the support member 210 serves to elevate the mounting arrangement of the light sensor 130. Therefore, without changing the mounting positions of other components of the fill light 100, the light sensor 130 can be positioned closer to the through-hole 1105, allowing it to receive more ambient light and thus improving detection accuracy.

[0078] The support member 210 can be an electrical connection structure, and the circuit board 200 can be electrically connected to the optical sensor 130 through the support member 210. Alternatively, the support member 210 is merely for support, and the optical sensor 130 is electrically connected to the circuit board 200 through other components. The specific structure of the support member 210 is not limited herein.

[0079] The electronic devices disclosed in the embodiments of the present application may be smart phones, tablet computers, e-book readers, wearable devices (such as smart watches), electronic game consoles, and other devices. The embodiments of the present application do not limit the specific types of electronic devices.

[0080] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A fill light with a light detection function, comprising: A light guide (110), wherein a first side (1108) of the light guide (110) is provided with a first light incident surface (1104), a second side (1109) of the light guide (110) is provided with an annular light emitting surface (1103), and the light guide (110) is provided with a through hole (1105) extending from the first side (1108) to the second side (1109); a light sensor (130), the light sensor (130) being located on the first side (1108) of the light guide (110) and arranged opposite to the through hole (1105), and external light passing through the through hole (1105) is received by the light sensor (130); A first light source (120) is arranged opposite to the first light incident surface (1104), and light emitted by the first light source (120) enters the light guide member (110) from the first light incident surface (1104) and is emitted from the light guide member (110) through the annular light emitting surface (1103).

2. The fill light according to claim 1, wherein: The light guide (110) is further provided with a first reflecting surface (1101) and a second reflecting surface (1102); The first reflecting surface (1101) is located on the second side (1109) of the light guide (110), and the annular light emitting surface (1103) surrounds the first reflecting surface (1101); the second reflecting surface (1102) is located on the first side (1108) of the light guide (110), and the second reflecting surface (1102) surrounds the first light incident surface (1104); the first light incident surface (1104) is arranged opposite to the first reflecting surface (1101), and the annular light emitting surface (1103) is arranged opposite to the second reflecting surface (1102); the light emitted by the first light source (120) is reflected by the first reflecting surface (1101) and the second reflecting surface (1102) and then emitted from the annular light emitting surface (1103); along the direction of the central optical axis (W) of the first light source (120), the orthographic projection of the through hole (1105) is located outside the orthographic projection of the annular light emitting surface (1103).

3. The fill light according to claim 2, wherein: Along the direction of the central optical axis (W) of the first light emitting source (120), the orthographic projection of the through hole (1105) is located between the orthographic projection of the first reflecting surface (1101) and the orthographic projection of the annular light emitting surface (1103), and the through hole (1105) passes through the first light incident surface (1104), and the orthographic projection of the through hole (1105) does not overlap with the second reflecting surface (1102).

4. The fill light according to claim 3, wherein: The light guide (110) further comprises a second light incident surface (1107), which is located on the first side (1108) of the light guide (110); the fill light (100) further comprises a second light source (140), which is arranged opposite to the second light incident surface (1107); the light sensor (130) is located between the first light source (120) and the second light source (140); the light emitted by the second light source (140) enters the light guide (110) from the second light incident surface (1107) and is emitted through the annular light emitting surface (1103).

5. The fill light according to claim 4, wherein: The second light incident surface (1107) is located on a side of the light sensor (130) away from the first light incident surface (1104); The light guide (110) further comprises a third reflecting surface (1106), wherein the third reflecting surface (1106) is a concave surface facing the second light incident surface (1107); The second light source (140) is arranged opposite to the second light incident surface (1107), and the light emitted by the second light source (140) is reflected by the third reflection surface (1106) and then emitted from the annular light emitting surface (1103).

6. The fill light according to claim 5, wherein: The light guide (110) comprises a main body (111) and an extension portion (112), wherein the extension portion (112) is arranged at the edge of the main body (111) and extends along the circumference of the main body (111); the first reflecting surface (1101), the second reflecting surface (1102), the annular light emitting surface (1103), the first light incident surface (1104) and the through hole (1105) are all arranged on the main body (111), and the third reflecting surface (1106) and the second light incident surface (1107) are both arranged on the extension portion (112).

7. The fill light according to claim 2, wherein: The second reflecting surface (1102) comprises a plurality of annular light-guiding grooves, and the plurality of annular light-guiding grooves are continuously arranged along a direction perpendicular to a central optical axis (W) of the first light source (120).

8. The fill light according to claim 7, wherein: The fill light (100) further comprises a reflective film (150), wherein the reflective film (150) is located on the second side (1109) of the light guide (110), and the reflective film (150) has a fourth reflective surface, and the fourth reflective surface is arranged opposite to the second reflective surface (1102).

9. The fill light according to claim 1, wherein: The fill light (100) further includes a lens (160) and a light shielding member (170), wherein the light shielding member (170) is located between the light guide member (110) and the lens (160); the light shielding member (170) includes a first light shielding portion (171) and a second light shielding portion (172), wherein the first light shielding portion (171) surrounds the second light shielding portion (172), and an annular light-transmitting area (1722) is formed between the first light shielding portion (171) and the second light shielding portion (172), wherein the annular light-transmitting area (1722) is arranged opposite to the annular light-emitting surface (1103); the second light shielding portion (172) is provided with a through hole (1721), and the through hole (1105) is connected to the through hole (1721).

10. An electronic device comprising a housing, a circuit board (200), and the fill light (100) according to any one of claims 1 to 9, wherein the light guide (110) is arranged on the housing, and the first light source (120) and the light sensor (130) are both arranged on the circuit board (200).

11. The electronic device according to claim 10, wherein: The fill light (100) further comprises a second light source (140); the second light source (140), the first light source (120) and the light sensor (130) are arranged on the circuit board (200) at intervals.

12. The electronic device according to claim 10, wherein: A support member (210) is provided on a side of the circuit board (200) facing the light guide member (110), and the light sensor (130) is provided on a side of the support member (210) facing the light guide member (110).

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