Light supplementing lamp module and electronic device

Abstract

This application discloses a fill light module and an electronic device. The fill light module includes a lamp cover and a flash assembly. The flash assembly and the lamp cover are stacked together. The side of the lamp cover facing the flash assembly has multiple incident areas, and the side of the lamp cover away from the flash assembly has an annular light-emitting area. The flash assembly includes multiple flashes, each positioned opposite one of the incident areas. After the light emitted by the flashes enters the lamp cover through its corresponding incident area, part of the light exits directly from the annular light-emitting area, while the other part is reflected by at least one of the incident areas' corresponding walls before exiting from the annular light-emitting area. The multiple flashes in the fill light module can switch between different fill light modes to adjust the brightness of the light emitted from the annular light-emitting area. The fill light module of this application is small in size and low in cost, and can meet the fill light needs of shooting targets under different distance conditions.

Description

Technical Field

[0001] This application belongs to the field of electronic technology, specifically relating to a fill light module and an electronic device. Background Technology

[0002] With the development of electronic devices such as mobile phones and tablets, these devices are constantly being updated and iterated while integrating more and more functions. Electronic devices are usually equipped with camera modules. In order to ensure that the camera module obtains better shooting results, a fill light module is also equipped on one side of the camera module. The fill light module can provide supplementary lighting for the camera module to shoot, thus enabling the camera module to complete shooting in dark environments (such as night, cloudy days, dimly lit basements, etc.).

[0003] In related technologies, to ensure a soft light and moderate brightness in the fill light, the fill light module is configured as a ring fill light. Existing ring fill lights mainly consist of multiple single light sources arranged in a ring. Such ring fill lights are not only expensive and bulky, but also typically have a fixed illumination brightness, making it impossible to meet the fill light needs of the shooting target under different distance conditions. Summary of the Invention

[0004] This application aims to provide a fill light module and electronic device, which at least solves the problems of existing ring fill lights being costly, having a single fill light method, and being unable to meet the fill light needs in different usage scenarios.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, embodiments of this application propose a fill light module, including: a lamp cover and a flash assembly;

[0007] The flash assembly and the lamp cover are stacked together. The side of the lamp cover facing the flash assembly has multiple incident areas, and the side of the lamp cover away from the flash assembly has an annular light-emitting area.

[0008] The flash assembly includes multiple flash units, which are arranged one-to-one with the multiple incident areas. After the light emitted by the flash unit enters the lamp cover through its corresponding incident area, a portion of the light is emitted directly from the annular light-emitting area, and another portion of the light is reflected by the wall surface corresponding to at least one of the multiple incident areas before being emitted from the annular light-emitting area.

[0009] The multiple flashes in the fill light module can switch between different fill light modes to adjust the brightness of the light emitted from the annular light-emitting area.

[0010] According to an embodiment of this application, in a supplementary lighting module, along the axial direction of the annular light-emitting region, at least a portion of the projection of the incident region overlaps with the projection of the annular light-emitting region, and at least a portion of the projection of the incident region is located within the area defined by the projection of the annular light-emitting region.

[0011] According to an embodiment of this application, a fill light module is provided with a reflective structure on the side of the lamp cover away from the flash assembly. The reflective structure is located inside the annular light-emitting area. The reflective structure is arranged opposite to one of a plurality of incident areas.

[0012] When light is incident on the reflective structure through the incident area, the reflective structure reflects the light to the wall surface corresponding to the other incident areas, and the other incident areas then reflect the light to the annular light-emitting area.

[0013] According to an embodiment of this application, the surface shape of the wall corresponding to the incident area includes at least one of a sawtooth surface and a circular arc surface; each of the incident areas extends circumferentially relative to the central axis of the annular light-emitting area.

[0014] According to an embodiment of this application, a fill light module is provided, wherein the plurality of flash units include at least a first flash unit, a second flash unit, and a third flash unit; the fill light mode of the fill light module includes at least two of the first fill light mode, the second fill light mode, and the third fill light mode;

[0015] In the first fill light mode, the first flash is on, the second flash and the third flash are both off, and the light output from the annular light-emitting area reaches the first brightness threshold.

[0016] In the second fill light mode, the first flash is off, and the second and third flashes are both on, and the light output from the annular light-emitting area reaches the second brightness threshold.

[0017] In the third fill light mode, the first flash, the second flash, and the third flash are all turned on, and the light output from the annular light-emitting area reaches the third brightness threshold.

[0018] The first brightness threshold, the second brightness threshold, and the third brightness threshold increase sequentially.

[0019] According to an embodiment of this application, a fill light module is provided, wherein the first flash, the second flash, and the third flash are arranged in a straight line;

[0020] Along the axial direction of the annular light-emitting region, the projection of the first flash lamp is located within the area defined by the projection of the annular light-emitting region, and the projections of the second flash lamp and the third flash lamp overlap with the projection of the annular light-emitting region.

[0021] According to an embodiment of this application, a supplementary lighting module further includes a reflective component; the reflective component includes a first reflective film and a second reflective film.

[0022] The first reflective film is attached to one side of the lamp cover facing the flash assembly, and the first reflective film has an opening opposite to the flash; the first reflective film is used to reflect light emitted from the side of the lamp cover facing the flash assembly into the lamp cover;

[0023] The second reflective film is attached to the side of the lamp cover away from the flash assembly, and at least a portion of the second reflective film is disposed inside the annular light-emitting area. The second reflective film is used to reflect light emitted from the side of the lamp cover away from the flash assembly into the lamp cover.

[0024] According to an embodiment of this application, a supplementary lighting module is provided with a light-diffusing structure on the wall surface corresponding to the annular light-emitting area. The light-diffusing structure includes a frosting surface or a diffusion film.

[0025] According to an embodiment of this application, a fill light module is provided, the fill light module further includes a light shield; the light shield is disposed on one side of the lamp cover away from the flash assembly; the annular light-emitting area extends circumferentially along the light shield.

[0026] According to an embodiment of this application, a fill light module is provided, wherein a groove is provided on one side of the lamp cover opposite to the flash assembly, the annular light-emitting area extends circumferentially along the groove, and the light-shielding member is disposed in the groove.

[0027] Secondly, embodiments of this application propose an electronic device, including: a fill light module, a camera module, and a controller;

[0028] The fill light module is located on one side of the camera module. The fill light module includes a lamp cover and a flash assembly. The flash assembly and the camera module are electrically connected to the controller.

[0029] The flash assembly and the lamp cover are stacked together. The side of the lamp cover facing the flash assembly has multiple incident areas, and the side of the lamp cover away from the flash assembly has an annular light-emitting area.

[0030] The flash assembly includes multiple flash units, which are arranged one-to-one with the multiple incident areas. After the light emitted by the flash unit enters the lamp cover through its corresponding incident area, a portion of the light is emitted directly from the annular light-emitting area, and another portion of the light is reflected by the wall surface corresponding to at least one of the multiple incident areas before being emitted from the annular light-emitting area.

[0031] The controller can switch between different fill light modes for multiple flashes according to the focal length of the camera module, so as to provide fill light for different focal lengths.

[0032] An electronic device according to an embodiment of this application includes at least a first flash, a second flash, and a third flash; the fill light module includes at least two of the first fill light mode, the second fill light mode, and the third fill light mode.

[0033] In the first fill light mode, the camera module is within the first focal length range, the first flash is on, and the second and third flashes are both off. The light output from the ring-shaped light-emitting area reaches the first brightness threshold.

[0034] In the second fill light mode, the camera module is within the second focal length range, the first flash is off, and the second and third flashes are both on, and the light output from the ring-shaped light-emitting area reaches the second brightness threshold.

[0035] In the third fill light mode, the camera module is in the third focal length range, the first flash, the second flash and the third flash are all turned on, and the light output by the ring light-emitting area reaches the third brightness threshold.

[0036] The first brightness threshold, the second brightness threshold, and the third brightness threshold increase sequentially, and the focal length values ​​corresponding to the first focal length range, the second focal length range, and the third focal length range gradually increase.

[0037] In the embodiments of this application, by setting up a flash assembly and a lamp cover, multiple flashes corresponding to the flash assembly are arranged one-to-one with multiple incident areas on the lamp cover. On the one hand, after the light enters the lamp cover, the light can be reflected by the wall surface corresponding to each incident area, and the light emitted by multiple flashes can be output from the annular light-emitting area on the lamp cover, so that the supplementary light is output in the form of annular light spots, ensuring that the supplementary light is soft and minimizing the number of flashes deployed, thereby reducing equipment costs. On the other hand, by controlling the on and off states of different flashes, multiple flashes can be switched between different supplementary light modes, thereby adjusting the brightness of the light emitted from the annular light-emitting area, and thus meeting the supplementary light needs in different usage scenarios.

[0038] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0039] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0040] Figure 1 This is a schematic diagram of the exploded structure of the fill light module according to an embodiment of this application;

[0041] Figure 2 This is a cross-sectional view of a first type of supplementary lighting module according to an embodiment of this application;

[0042] Figure 3 According to the embodiments of this application Figure 2 The diagram shown illustrates the optical path of the fill light module in its first fill light mode.

[0043] Figure 4 According to the embodiments of this application Figure 2 The diagram shows the optical path of the fill light module in the second fill light mode;

[0044] Figure 5 According to the embodiments of this application Figure 2 The diagram shown illustrates the optical path of the fill light module in the third fill light mode.

[0045] Figure 6 This is a cross-sectional view of a second type of supplementary lighting module according to an embodiment of this application;

[0046] Figure 7 According to the embodiments of this application Figure 6 The diagram shows the optical path of the fill light module.

[0047] Figure 8 According to the embodiments of this application Figure 7 A magnified view of a portion of point K1;

[0048] Figure 9 According to the embodiments of this application Figure 7 A magnified view of a portion of point K2;

[0049] Figure 10 According to the embodiments of this application Figure 7 A magnified view of a portion of point K3;

[0050] Figure 11 This is a control structure block diagram of an electronic device according to an embodiment of this application.

[0051] Figure label:

[0052] 1. Fill light module; 2. Controller; 3. Camera module;

[0053] 11. Lampshade; 111. Incident area; 112. Annular light-emitting area; 113. Reflective structure; 1101. Groove; 1102. Diffusion structure;

[0054] 12. Flash unit assembly; 121. First flash unit; 122. Second flash unit; 123. Third flash unit; 1201. Flexible circuit board;

[0055] 13. Reflective component; 131. First reflective film; 1311. Opening; 132. Second reflective film;

[0056] 14. Light-shielding components. Detailed Implementation

[0057] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0058] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0059] In the description of this application, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0061] The following is combined with Figures 1-11 The supplementary lighting module and electronic device provided in this application will be described in detail through specific embodiments and application scenarios.

[0062] Firstly, such as Figure 1 , Figure 2 and Figure 6 As shown in the figure, this application embodiment proposes a fill light module 1, including: a lamp cover 11 and a flash assembly 12.

[0063] The flash assembly 12 and the lamp cover 11 are stacked. The side of the lamp cover 11 facing the flash assembly 12 has multiple incident areas 111, and the side of the lamp cover 11 away from the flash assembly 12 has an annular light-emitting area 112.

[0064] The flash assembly 12 includes multiple flash units, which are arranged one-to-one with multiple incident areas 111. After the light emitted by the flash unit enters the lamp cover 11 through its corresponding incident area 111, part of the light is emitted directly from the annular light-emitting area 112, and the other part of the light is reflected by at least one of the multiple incident areas 111 before being emitted from the annular light-emitting area 112.

[0065] Among them, the multiple flashes in the fill light module 1 can be selectively turned on and off to adjust the brightness of the light emitted from the annular light-emitting area 112.

[0066] Understandably, the lampshade 11 has a first wall P1 and a second wall P2 arranged opposite to each other, the flash assembly 12 is arranged opposite to the first wall P1, the first wall P1 has a plurality of incident areas 111, and the second wall P2 has an annular light-emitting area 112.

[0067] In practical applications, the wall surface corresponding to the incident area 111 can be either a flat surface or a textured surface. When the wall surface corresponding to the incident area 111 is a textured surface, when light is transmitted inside the lampshade 11 and shines on the textured surface, the textured surface is used to reflect the light to the annular light-emitting area 112 as much as possible.

[0068] Meanwhile, the annular light-emitting area 112 is circular. In this embodiment, a shielding member or a coating member can be provided on the side of the lamp cover 11 away from the flash assembly 12 so that the annular light-emitting area 112 is formed on the side of the lamp cover 11 away from the flash assembly 12. Alternatively, the side of the lamp cover 11 away from the flash assembly 12 can be provided with an annular structure to form the aforementioned annular light-emitting area 112.

[0069] In some examples, multiple annular light-emitting areas 112 can be provided, and the multiple annular light-emitting areas 112 are arranged coaxially from the inside out. Correspondingly, the multiple flash units are specifically multiple ring flash units, and the multiple ring flash units and the multiple annular light-emitting areas 112 are arranged one-to-one. Among them, the ring flash unit can be a ring light strip, or the ring flash unit can be composed of multiple point light sources arranged circumferentially.

[0070] In some examples, each flash unit in the flash assembly 12 can be configured as an LED light, with at least a portion of the multiple flash units positioned relative to the annular light-emitting area 112.

[0071] To facilitate power control of each flash unit, the flash unit assembly 12 is also equipped with a circuit board, with each of the aforementioned flash units located on the side of the circuit board facing the lamp cover 11. The circuit board can be a flexible circuit board 1201.

[0072] In practical applications, this embodiment can arrange multiple flash units either in a straight line or in a circular arrangement relative to the central axis of the annular light-emitting area 112.

[0073] Since the multiple incident areas 111 on the lamp cover 11 are arranged one-to-one with the multiple flash lamps, the light emitted by each flash lamp can enter the lamp cover 11 through its corresponding incident area 111, and then be reflected by the first wall surface P1 and the second wall surface P2 of the lamp cover 11 and / or by the wall surface corresponding to at least one of the multiple incident areas 111, and then be output from the annular light output area 112 in the form of annular light spot.

[0074] Compared to existing ring-shaped fill lights based on multiple single light sources arranged in a ring, this application can use the lamp cover 11 to guide the light emitted by each flash to the ring light output area 112, so that the light emitted by each flash is output in the form of a ring light spot. Thus, this application can appropriately reduce the number of flashes according to actual needs, which is conducive to reducing the configuration cost of the fill light module 1 and realizing the miniaturization design of the fill light module 1.

[0075] To facilitate the guidance of light output from the annular light-emitting area 112 of the lamp cover 11, the wall surface corresponding to the incident area 111 can be a wall surface with Fresnel tooth structure, a sawtooth surface, or other optically optimized light distribution surface shape. There is no specific limitation on this. It is only necessary to ensure that the light emitted by multiple flash lamps can be output from the annular light-emitting area 112 with a relatively small number of reflections after entering the lamp cover 11.

[0076] As can be seen from the above, this application sets up a flash assembly 12 and a lamp cover 11, with multiple flashes corresponding to the flash assembly 12 and multiple incident areas 111 on the lamp cover 11 arranged one-to-one. On the one hand, after the light enters the lamp cover 11, the light can be reflected by the wall surface corresponding to each incident area 111, so that the light emitted by multiple flashes is output from the annular light-emitting area 112 on the lamp cover 11 with a relatively small number of reflections. This achieves the output of the fill light in the form of an annular light spot, ensuring that the fill light is soft and minimizing the number of flashes required, thereby reducing equipment costs. On the other hand, by controlling the on and off states of different flashes, multiple flashes can be switched between different fill light modes, thereby adjusting the brightness of the light emitted from the annular light-emitting area 112 and meeting the fill light requirements in different usage scenarios.

[0077] In some embodiments, such as Figure 2 As shown, along the axial direction of the annular light-emitting region 112, the projection of at least a portion of the incident region 111 overlaps with the projection of the annular light-emitting region 112, and the projection of at least a portion of the incident region 111 is located within the region defined by the projection of the annular light-emitting region 112.

[0078] Understandably, multiple incident areas 111 on the lampshade 11 are respectively located on the first wall surface P1 of the lampshade 11. Since multiple flash lamps are arranged one-to-one with multiple incident areas 111, this embodiment, by setting the relative positions of each incident area 111 and the annular light-emitting area 112, not only ensures the compactness of the flash lamp arrangement on the flash lamp assembly 12, but also ensures that after the light enters the lampshade 11, it can be output from the annular light-emitting area 112 on the lampshade 11 with a relatively small number of reflections.

[0079] Specifically, the light emitted by each flash enters the lampshade 11 through its corresponding incident area 111. Then, part of the light is emitted directly from the annular light-emitting area 112, and the other part of the light is reflected by at least one of the first wall surface P1 and the second wall surface P2 of the lampshade 11 and / or reflected by the wall surface corresponding to at least one of the multiple incident areas 111, and then emitted from the annular light-emitting area 112.

[0080] In some embodiments, such as Figure 6 As shown, a reflective structure 113 is provided on the side of the lamp cover 11 facing away from the flash assembly 12. The reflective structure 113 is located inside the annular light-emitting area 112. The reflective structure 113 is arranged opposite to one of the plurality of incident areas 111.

[0081] When light passes through the aforementioned incident area 111 and is incident on the reflective structure 113, the reflective structure 113 reflects the light to the wall surface corresponding to other incident areas 111, and the other incident areas 111 then reflect the light to the annular light-emitting area 112.

[0082] Specifically, the reflective structure 113 is disposed on the second wall surface P2 of the lampshade 11, and one of the plurality of incident areas 111 opposite to the reflective structure 113 is disposed in the middle region of the first wall surface P1 of the lampshade 11, and the other parts of the plurality of incident areas 111 are disposed around the incident area 111 located in the middle region.

[0083] When one of the multiple flash units, which is positioned opposite to the reflector structure 113, is in the on state, the light emitted by that flash unit enters the lampshade 11 through the incident area 111 in the middle region of the first wall P1, and is then reflected by the reflector structure 113 towards the periphery of the lampshade 11 to be reflected to other parts of the multiple incident areas 111. After being reflected by the walls corresponding to these incident areas 111, the light is emitted from the annular light-emitting area 112.

[0084] In some embodiments, the surface shape of the wall corresponding to the incident area 111 on the lampshade 11 includes at least one of a sawtooth surface and a circular arc surface; each incident area 111 is arranged to extend circumferentially relative to the central axis of the annular light-emitting area 112.

[0085] like Figure 2 As shown, three incident areas 111 are arranged on the first wall surface P1 of the lampshade 11.

[0086] Specifically, the lampshade 11 has an incident area 111 in the middle, and the surface shape of the wall corresponding to the incident area 111 includes a sawtooth surface and a circular arc surface to form a Fresnel toothed surface; the other two incident areas 111 of the lampshade 11 are arranged around the incident area 111 in the middle of the lampshade 11, and the surface shape of the wall corresponding to these two incident areas 111 is configured as a sawtooth surface, and the sawtooth surface extends circumferentially relative to the central axis of the annular light-emitting area 112.

[0087] like Figure 6 As shown, the first wall surface P1 of the lampshade 11 is configured with a similar Figure 2 The three incident areas 111 shown have a reflective structure 113 in the middle region of the second wall surface P2 on the lampshade 11.

[0088] Specifically, on the lampshade 11, the wall surface corresponding to the incident area 111 located in the middle region of the first wall surface P1 is a plane, and the wall surfaces corresponding to the other two incident areas 111 on the lampshade 11 are sawtooth surfaces, and the sawtooth surfaces extend circumferentially relative to the central axis of the annular light-emitting area 112.

[0089] The surface shape of the wall corresponding to the reflective structure 113 on the second wall P2 is configured as an arc surface, and the arc surface extends circumferentially relative to the central axis of the annular light-emitting region 112.

[0090] In some embodiments, the plurality of flash units include at least a first flash unit 121, a second flash unit 122, and a third flash unit 123; the fill light module 1 has at least two of the following fill light modes: a first fill light mode, a second fill light mode, and a third fill light mode.

[0091] In the first fill light mode, the first flash 121 is turned on, while the second flash 122 and the third flash 123 are both turned off, and the light output from the ring light-emitting area 112 reaches the first brightness threshold.

[0092] In the second fill light mode, the first flash 121 is off, while the second flash 122 and the third flash 123 are both on, and the light output from the ring light-emitting area 112 reaches the second brightness threshold.

[0093] In the third fill light mode, the first flash 121, the second flash 122 and the third flash 123 are all turned on, and the light output from the ring light output area 112 reaches the third brightness threshold.

[0094] Among them, the first brightness threshold, the second brightness threshold, and the third brightness threshold increase sequentially.

[0095] In one example, see Figures 3 to 5The first wall surface P1 of the lampshade 11 is provided with three incident areas 111. The lampshade 11 has one incident area 111 in the middle, which is opposite to the first flash 121. The other two incident areas 111 of the lampshade 11 are arranged around the incident area 111 in the middle of the lampshade 11 and are opposite to the second flash 122 and the third flash 123.

[0096] like Figure 3 As shown, when the target is close to the camera module, almost all the light emitted from the annular light-emitting area 112 of the lampshade 11 illuminates the target. If a conventional flash is used for supplemental lighting, the image will easily become overexposed, affecting the shooting effect. In this case, the first flash 121 is turned on, while the second flash 122 and the third flash 123 are turned off. The light emitted by the first flash 121 enters the lampshade 11 through its corresponding incident area 111 and then diffuses outwards from the lampshade 11 with the incident area 111 as the center. After being reflected by the walls corresponding to the other two incident areas 111 on the lampshade 11, the light reaches the annular light-emitting area 112 to the maximum extent and is emitted from the annular light-emitting area 112 of the lampshade 11 in a uniform and soft manner.

[0097] The light rays are roughly divided into rays a, b, and c according to their transmission path within the lampshade 11. Ray a is reflected sequentially by the second wall P2 and the first wall P1, and then outputs from the annular light-emitting area 112 on the lampshade 11. Ray b is reflected sequentially by the second wall P2, the first wall P1, the second wall P2, and the wall corresponding to an incident area 111 on the left side of the lampshade 11, and then outputs from the annular light-emitting area 112 on the lampshade 11. Ray c is reflected sequentially by the second wall P2 and the wall corresponding to an incident area 111 on the right side of the lampshade 11, and then outputs from the annular light-emitting area 112 on the lampshade 11.

[0098] Therefore, when only the first flash 121 is turned on, the fill light module 1 outputs a uniform and soft fill light ring, and the output light reaches the first brightness threshold. At this time, the fill light module 1 is suitable for use with a camera module in a short focal length state, which can meet the shooting scenarios of the camera module under short focal length conditions and achieve the shooting effect required by the user.

[0099] like Figure 4 As shown, when the target is at a suitable distance from the camera module, there is no need to deliberately reduce or increase the brightness of the light emitted from the ring light-emitting area 112 on the lamp cover 11. You can choose to control the first flash 121 to be off, and control the second flash 122 and the third flash 123 to be on.

[0100] The light emitted by the second flash 122 enters the lamp cover 11 through its corresponding incident area 111 and can then be emitted directly from the annular light-emitting area 112 on the lamp cover 11; the light emitted by the third flash 123 also enters the lamp cover 11 through its corresponding incident area 111 and can then be emitted directly from the annular light-emitting area 112 on the lamp cover 11.

[0101] Therefore, it can be seen that when only the second flash 122 and the third flash 123 are turned on, the brightness of the fill light ring output by the fill light module 1 is relatively moderate, which is suitable for pairing with camera modules in the medium focal length state and can meet the shooting needs of most camera modules except for short focal length or long focal length.

[0102] like Figure 5 As shown, when the target is far from the camera module 3, the target can be completely covered by the light emitted by the lampshade 11. However, there is some light energy loss during the propagation of the light. If a conventional flash is used for supplemental lighting, the light intensity may be too weak or even insufficient to illuminate the target, which will directly affect the shooting effect. In this case, the first flash 121, the second flash 122, and the third flash 123 are activated simultaneously.

[0103] Obviously, the light emitted by the first flash 121, after passing through its corresponding incident area 111 and entering the lamp cover 11, can be distributed according to... Figure 3 The light transmission path shown transmits within the lampshade 11 and then exits from the annular light-emitting area 112 on the lampshade 11.

[0104] The light emitted by the second flash 122 and the third flash 123 enters the lamp cover 11 through their respective incident areas 111 and then exits from the annular light-emitting area 112 on the lamp cover 11.

[0105] In this situation, based on the reflection and light guiding of light by the lampshade 11, the beams emitted by the first flash 121, the second flash 122 and the third flash 123 can be converged as much as possible in the annular light-emitting area 112. At this time, the light intensity of the annular light-emitting area 112 of the lampshade 11 reaches its maximum, which is suitable for use with a camera module in long focal length mode and can meet the shooting needs of the camera module under long focal length conditions.

[0106] In one example, see Figure 6 and Figure 7 The second wall surface P2 of the lamp cover 11 is provided with a reflective structure 113 extending in the circumferential direction. The reflective structure 113 is arranged opposite to the first flash lamp 121. The surface of the wall surface corresponding to the reflective structure 113 is configured as an arc surface, and a coating layer is provided on the arc surface.

[0107] Meanwhile, the first wall surface P1 of the lampshade 11 is provided with three incident areas 111. One of the incident areas 111 is located in the middle of the first wall surface P1 and is respectively positioned opposite to the reflective structure 113 and the first flash lamp 121. The other two incident areas 111 on the first wall surface P1 are arranged around the incident area 111 in the middle of the lampshade 11 and are respectively positioned opposite to the second flash lamp 122 and the third flash lamp 123.

[0108] In practical applications, the on / off states of the first flash 121, the second flash 122, and the third flash 123 can be controlled with reference to the above embodiments to meet the supplementary lighting needs of the camera module under different distance conditions of the shooting target.

[0109] Furthermore, in this embodiment, the surface shape of the wall corresponding to the two incident areas 111 set around the central region of the lampshade 11 is optically optimized to achieve precise light guiding.

[0110] like Figure 7 and Figure 8 As shown, when the light emitted by the first flash lamp 121 enters the lamp cover 11 through the first wall surface P1 and is incident on the wall surface corresponding to the reflective structure 113 corresponding to the first flash lamp 121, the arc surface at the reflective structure 113 can perform total internal reflection of the light, so as to reflect the light to the other two incident areas 111 around the lamp cover 11 to the maximum extent.

[0111] like Figure 9 As shown, for the two incident areas 111 located around the first wall P1, the wall surfaces corresponding to these two incident areas 111 are optically optimized sawtooth surfaces. When light from inside the lampshade 11 is incident on the sawtooth surface, the incident angle of the light relative to the sawtooth surface is greater than the critical angle C of the material of the lampshade 11. This setting also ensures that the incident light from inside the lampshade 11 undergoes total internal reflection on the sawtooth surface. While reducing light energy loss, it ensures that the light reflected by the sawtooth surface is emitted from the annular light-emitting area 112 of the lampshade 11, thereby improving the light energy emitted by the first flash lamp 121.

[0112] like Figure 10 As shown, after the second flash 122 and the third flash 123 enter the lamp cover 11 through their respective incident areas 111, they can be guided by the optimized sawtooth surface at the incident areas 111 to ensure that as much light as possible is emitted from the annular light-emitting area 112 of the lamp cover 11, thereby improving the light energy emitted by the second flash 122 and the third flash 123.

[0113] In some embodiments, such as Figure 1As shown, the first flash 121, the second flash 122, and the third flash 123 are arranged in a straight line; along the axial direction of the annular light-emitting region 112, the projection of the first flash 121 is located within the area defined by the projection of the annular light-emitting region 112, and the projections of the second flash 122 and the third flash 123 overlap with the projection of the annular light-emitting region 112.

[0114] Understandably, since multiple flash units are arranged one-to-one with multiple incident areas 111, the number and position of the incident areas 111 on the lamp cover 11 that are one-to-one with the first flash unit 121, the second flash unit 122, and the third flash unit 123 can be determined when the positions of the first flash unit 121, the second flash unit 122, and the third flash unit 123 are determined.

[0115] In practical applications, when only the first flash 121 is on, the light emitted by the first flash 121 can enter the lamp cover 11 through its corresponding incident area 111, and then diffuse outwards from the incident area 111 to the surrounding area of ​​the lamp cover 11. After being reflected by the first wall surface P1, the second wall surface P2 and the walls corresponding to other incident areas 111 of the lamp cover 11, the light is output from the annular light output area 112.

[0116] Correspondingly, since the second flash 122 and the third flash 123 are positioned opposite to the annular light-emitting area 112 along the central axis, the incident areas 111 corresponding to the second flash 122 and the third flash 123 are also positioned opposite to the annular light-emitting area 112 along the central axis. This allows the light emitted by the second flash 122 and the third flash 123 to be output from the annular light-emitting area 112 after passing through their respective incident areas 111 and entering the lamp cover 11, without undergoing multiple reflections. This ensures the light energy emitted by the second flash 122 and the third flash 123.

[0117] In some embodiments, such as Figure 1 As shown, the supplementary lighting module 1 also includes a reflective component 13; the reflective component 13 includes a first reflective film 131 and a second reflective film 132.

[0118] The first reflective film 131 is attached to the side of the lamp cover 11 facing the flash assembly 12. The first reflective film 131 has an opening 1311 opposite to the flash. The first reflective film 131 is used to reflect the light emitted from the side of the lamp cover 11 facing the flash assembly 12 into the lamp cover 11.

[0119] The second reflective film 132 is attached to the side of the lamp cover 11 away from the flash assembly 12. At least a portion of the second reflective film 132 is disposed within the area defined by the annular light-emitting area 112. The second reflective film 132 is used to reflect the light emitted from the side of the lamp cover 11 away from the flash assembly 12 into the lamp cover 11.

[0120] It is understood that, based on the arrangement of the first reflective film 131 and the second reflective film 132, this embodiment can confine light within the lampshade 11 and reduce the loss of light energy.

[0121] At the same time, the reflector 13 works in conjunction with the incident areas 111 provided on the lamp cover 11 to significantly reduce the number of times light is reflected inside the lamp cover 11 based on the incident areas 111, while guiding the light to the annular light-emitting area 112 of the lamp cover 11 as much as possible, thereby greatly improving the energy efficiency of the light emitted by the flash assembly 12.

[0122] In some embodiments, such as Figure 1 and Figure 2 As shown, the wall surface corresponding to the annular light-emitting area 112 is provided with a light-diffusing structure 1102, which includes a frosting surface or a diffusion film.

[0123] It is understood that the lampshade 11 in this embodiment is made of transparent glass.

[0124] The annular light-emitting region 112 can be specifically configured as a ring, and the second wall surface P2 corresponding to the annular light-emitting region 112 serves as the light-emitting surface of the lampshade 11. In this embodiment, the second wall surface P2 corresponding to the annular light-emitting region 112 can be atomized to form an atomized surface.

[0125] Meanwhile, the shape of the diffusion film is adapted to the annular light-emitting area 112. In this embodiment, the diffusion film can also be pasted onto the annular light-emitting area 112 with transparent adhesive. The diffusion film has a fogging visual effect, which can make the appearance of the supplementary light module 1 more beautiful.

[0126] In practical applications, the diffused light structure 1102 can scatter the light output from the annular light-emitting area 112, making the light output from the annular light-emitting area 112 more soft and evenly diffused, thereby ensuring the light output effect of the supplementary light module 1.

[0127] In some embodiments, such as Figure 1 As shown, the fill light module 1 also includes a light shield 14; the light shield 14 is disposed on the side of the lamp cover 11 away from the flash assembly 12, and the annular light-emitting area 112 extends circumferentially along the light shield 14.

[0128] Understandably, when the annular light-emitting area 112 is configured as a ring, the light-shielding member 14 is configured as a disc. The side of the light-shielding member 14 facing away from the lamp cover 11 can be plated with different colors according to actual needs to present different appearance effects, thereby ensuring the overall appearance of the supplementary light module 1.

[0129] In some embodiments, such as Figure 1 As shown, the lamp cover 11 has a groove 1101 on one side away from the flash assembly 12, the annular light-emitting area 112 extends circumferentially along the groove 1101, and the light-shielding member 14 is disposed in the groove 1101.

[0130] Specifically, in this embodiment, by embedding the light-shielding member 14 in the groove 1101, the light-shielding member 14 is assembled based on the groove 1101, and the light-shielding member 14 can also block the groove wall of the groove 1101 to prevent light leakage from the groove wall of the groove 1101, thereby ensuring that the light in the lampshade 11 can only be output from the annular light-emitting area 112.

[0131] The peripheral wall of the light-shielding member 14 is fitted with the groove wall of the groove 1101, and the thickness of the light-shielding member 14 is greater than or equal to the depth of the groove 1101.

[0132] Secondly, such as Figure 1 , Figure 2 , Figure 6 and Figure 11 As shown in the figure, this application embodiment proposes an electronic device, including: a fill light module 1, a camera module 3, and a controller 2.

[0133] The fill light module 1 is located on one side of the camera module 3, and the flash assembly 12 and the camera module 3 are electrically connected to the controller 2 respectively.

[0134] The flash assembly 12 and the lamp cover 11 are stacked. The side of the lamp cover 11 facing the flash assembly 12 has multiple incident areas 111, and the side of the lamp cover 11 away from the flash assembly 12 has an annular light-emitting area 112.

[0135] The flash assembly 12 includes multiple flash units, which are arranged one-to-one with multiple incident areas 111. After the light emitted by the flash unit enters the lamp cover 11 through its corresponding incident area 111, part of the light is emitted directly from the annular light-emitting area 112, and the other part of the light is reflected by the wall surface corresponding to at least one of the multiple incident areas 111 and then emitted from the annular light-emitting area 112.

[0136] The controller 2 can switch between different fill light modes for multiple flashes according to the focal length of the camera module 3, so as to provide fill light for different focal lengths.

[0137] It is understood that in this embodiment, at least two camera modules 3 with different focal lengths can be configured for a fill light module 1, or a single camera module 3 capable of zooming can be configured for a fill light module 1.

[0138] In practical applications, the controller 2 can determine the focal length of the camera module 3 based on the distance between the target and the lens of the camera module 3. Then, based on the focal length of the camera module 3, it determines the on / off control strategy for the multiple flashes in the fill light module 1, thereby controlling the multiple flashes to switch between different fill light modes. This ensures that while outputting a ring-shaped fill light beam through the ring light output area 112 of the fill light module 1, the brightness of the fill light module 1 matches the focal length of the camera module 3, so that the camera module 3 can achieve the shooting effect required by the user.

[0139] Meanwhile, as the on / off control strategy of multiple flashes in the fill light module 1 changes, the output brightness of the fill light module 1 will also be adjusted accordingly. In this embodiment, it is assumed that the fill light module 1 can output ring fill light beams of various brightness. Each ring fill light beam of brightness can be adapted to a camera module 3 with a focal length, ensuring that the fill light module 1 can cover shooting scenarios under the fill light conditions of daily use by users.

[0140] In some embodiments, such as Figures 2 to 7 As shown, the multiple flash units include at least a first flash unit 121, a second flash unit 122, and a third flash unit 123; the fill light module 1 has at least two of the following fill light modes: a first fill light mode, a second fill light mode, and a third fill light mode.

[0141] In the first fill light mode, the camera module 3 is within the first focal length range, the first flash 121 is on, and the second flash 122 and the third flash 123 are both off. The light output from the ring light-emitting area 112 reaches the first brightness threshold.

[0142] In the second fill light mode, the camera module 3 is within the second focal length range, the first flash 121 is off, and the second flash 122 and the third flash 123 are both on. The light output from the ring light-emitting area 112 reaches the second brightness threshold.

[0143] In the third fill light mode, the camera module 3 is in the third focal length range, and the first flash 121, the second flash 122 and the third flash 123 are all turned on, and the light output by the ring light output area 112 reaches the third brightness threshold.

[0144] Among them, the first brightness threshold, the second brightness threshold and the third brightness threshold increase sequentially, and the focal length values ​​corresponding to the first focal length range, the second focal length range and the third focal length range gradually increase.

[0145] As can be seen from the above, the first, second, and third fill light modes of the fill light module 1 are adapted to the first, second, and third focal length ranges of the camera module 3 in a one-to-one correspondence, and the larger the focal length of the camera module 3, the greater the fill light brightness of the fill light module 1.

[0146] The first focal length range of the camera module 3 can be the focal length range of the camera module 3 in the short focal length state in the above embodiment; the second focal length range of the camera module 3 can be the focal length range of the camera module 3 in the medium focal length state in the above embodiment; and the third focal length range of the camera module 3 can be the focal length range of the camera module 3 in the long focal length state in the above embodiment.

[0147] Finally, it should be noted that in the embodiments of this application, the above-mentioned electronic device may be a mobile terminal, such as a smartphone, tablet personal computer, laptop computer, personal digital assistant (PDA), mobile internet device (MID), or wearable device, or other electronic devices, such as digital camera, e-book, navigator, etc.

[0148] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0149] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A supplementary lighting module, characterized in that, include: Lampshade and flash assembly; The flash assembly and the lamp cover are stacked together. The lamp cover has multiple incident areas on one side facing the flash assembly, and an annular light-emitting area on the other side facing away from the flash assembly. Along the axial direction of the annular light-emitting area, at least a portion of the projection of the incident area overlaps with the projection of the annular light-emitting area, and at least a portion of the projection of the incident area is located within the area defined by the projection of the annular light-emitting area. The flash assembly includes multiple flash units, which are arranged one-to-one with the multiple incident areas. After the light emitted by the flash unit enters the lamp cover through its corresponding incident area, a portion of the light is emitted directly from the annular light-emitting area, and another portion of the light is reflected by the wall surface corresponding to at least one of the multiple incident areas before being emitted from the annular light-emitting area. The multiple flashes in the fill light module can switch between different fill light modes to adjust the brightness of the light emitted from the annular light-emitting area.

2. The supplementary lighting module according to claim 1, characterized in that, The lamp cover has a reflective structure on the side opposite to the flash assembly, and the reflective structure is located inside the annular light-emitting area; the reflective structure is arranged opposite to one of the multiple incident areas; When light is incident on the reflective structure through the incident area, the reflective structure reflects the light to the wall surface corresponding to the other incident areas, and the other incident areas then reflect the light to the annular light-emitting area.

3. The supplementary lighting module according to claim 1, characterized in that, The surface shape of the wall corresponding to the incident area includes at least one of a sawtooth surface and a circular arc surface; Each of the incident regions is arranged to extend circumferentially relative to the central axis of the annular light-emitting region.

4. The supplementary lighting module according to claim 1, characterized in that, The plurality of flash units includes at least a first flash unit, a second flash unit, and a third flash unit; the fill light module includes at least two of the first fill light mode, the second fill light mode, and the third fill light mode. In the first fill light mode, the first flash is on, the second flash and the third flash are both off, and the light output from the annular light-emitting area reaches the first brightness threshold. In the second fill light mode, the first flash is off, and the second and third flashes are both on, and the light output from the annular light-emitting area reaches the second brightness threshold. In the third fill light mode, the first flash, the second flash, and the third flash are all turned on, and the light output from the annular light-emitting area reaches the third brightness threshold. The first brightness threshold, the second brightness threshold, and the third brightness threshold increase sequentially.

5. The supplementary lighting module according to claim 4, characterized in that, The first flash unit, the second flash unit, and the third flash unit are arranged in a straight line; Along the axial direction of the annular light-emitting region, the projection of the first flash lamp is located within the area defined by the projection of the annular light-emitting region, and the projections of the second flash lamp and the third flash lamp overlap with the projection of the annular light-emitting region.

6. The supplementary lighting module according to any one of claims 1 to 5, characterized in that, The supplementary lighting module further includes: a reflective component; the reflective component includes a first reflective film and a second reflective film; The first reflective film is attached to one side of the lamp cover facing the flash assembly, and the first reflective film has an opening opposite to the flash; the first reflective film is used to reflect light emitted from the side of the lamp cover facing the flash assembly into the lamp cover; The second reflective film is attached to the side of the lamp cover away from the flash assembly, and at least a portion of the second reflective film is disposed inside the annular light-emitting area. The second reflective film is used to reflect light emitted from the side of the lamp cover away from the flash assembly into the lamp cover.

7. The supplementary lighting module according to any one of claims 1 to 5, characterized in that, The wall surface corresponding to the annular light-emitting area is provided with a light-diffusing structure, which includes a frosting surface or a diffusion film.

8. The supplementary lighting module according to any one of claims 1 to 5, characterized in that, The fill light module also includes a light shield; the light shield is disposed on one side of the lamp cover away from the flash assembly; the annular light-emitting area extends circumferentially along the light shield.

9. The supplementary lighting module according to claim 8, characterized in that, The lampshade has a groove on the side opposite to the flash assembly, the annular light-emitting area extends circumferentially along the groove, and the light-shielding member is disposed in the groove.

10. An electronic device, characterized in that, include: Fill light module, camera module, and controller; The fill light module is located on one side of the camera module. The fill light module includes a lamp cover and a flash assembly. The flash assembly and the camera module are electrically connected to the controller. The flash assembly and the lamp cover are stacked together. The lamp cover has multiple incident areas on one side facing the flash assembly, and an annular light-emitting area on the other side facing away from the flash assembly. Along the axial direction of the annular light-emitting area, at least a portion of the projection of the incident area overlaps with the projection of the annular light-emitting area, and at least a portion of the projection of the incident area is located within the area defined by the projection of the annular light-emitting area. The flash assembly includes multiple flash units, which are arranged one-to-one with the multiple incident areas. After the light emitted by the flash unit enters the lamp cover through its corresponding incident area, a portion of the light is emitted directly from the annular light-emitting area, and another portion of the light is reflected by the wall surface corresponding to at least one of the multiple incident areas before being emitted from the annular light-emitting area. The controller can switch between different fill light modes for multiple flashes according to the focal length of the camera module, so as to provide fill light for camera modules with different focal lengths.

11. The electronic device according to claim 10, characterized in that, The plurality of flash units includes at least a first flash unit, a second flash unit, and a third flash unit; the fill light module includes at least two of the first fill light mode, the second fill light mode, and the third fill light mode. In the first fill light mode, the camera module is within the first focal length range, the first flash is on, and the second and third flashes are both off. The light output from the ring-shaped light-emitting area reaches the first brightness threshold. In the second fill light mode, the camera module is within the second focal length range, the first flash is off, and the second and third flashes are both on. The light output from the ring-shaped light-emitting area reaches the second brightness threshold. In the third fill light mode, the camera module is in the third focal length range, the first flash, the second flash and the third flash are all turned on, and the light output by the ring light-emitting area reaches the third brightness threshold. Among them, the first brightness threshold, the second brightness threshold and the third brightness threshold increase sequentially, and the focal length values ​​corresponding to the first focal length range, the second focal length range and the third focal length range gradually increase.

Images