Light supplementing equipment for skin photographing detection and skin detection system

Abstract

The utility model relates to light supplementing equipment for skin photographing detection and a skin detection system, and belongs to the technical field of beauty equipment detection. A light supplementing device is used for being connected to a camera of a mobile electronic device to achieve light supplementing of the mobile electronic device, and the light supplementing device comprises a main body part, a connecting part and a light supplementing light source. The main body part is provided with a light-transmitting area, and the light-transmitting area is used for corresponding to the camera; the connecting part is fixedly connected with the main body part; the connecting part is used for being connected with mobile electronic equipment, so that the main body part can be fixed on a camera of the mobile electronic equipment; the light supplementing light source is arranged on the main body part and is used for emitting light supplementing rays of a specific wave band to the skin of a user; according to the technical scheme, the camera of the mobile electronic equipment can obtain the user skin image under the irradiation of the supplementary light to form the data information for reflecting the user skin, so that the user can accurately complete skin detection and obtain personalized beauty suggestions through the mobile electronic equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of beauty detection, and in particular to a light-filling device for skin photography detection and a skin detection system. Background Art

[0002] With the increasing popularity of beauty devices, more and more consumers are opting for at-home skincare. However, in-home beauty devices are operated by professionals who can adjust device parameters based on the patient's skin tone, blemishes, redness, and other skin conditions. For example, during laser hair removal, the power or energy of the light can be adjusted based on the patient's skin tone, or the appropriate device and wavelength can be selected based on the patient's skin blemishes, redness, and other conditions. However, due to the lack of skin detection capabilities, home beauty devices often cannot monitor the patient's skin condition to achieve the optimal effect.

[0003] To this end, some home beauty devices feature skin detection capabilities, allowing them to provide personalized beauty solutions based on the user's skin characteristics. However, current skin detection devices on the market are susceptible to interference from natural light in varying environments when acquiring skin parameters. Darker natural light can affect the accuracy of the results, preventing users from accurately understanding their skin condition. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problem that natural light of different brightness and darkness may affect the accuracy of skin acquisition results.

[0005] In order to solve the above technical problems, the present application provides a fill light device for skin photography detection, which is used to be connected to a mobile electronic device, and the mobile electronic device has at least one camera. The fill light device includes: a main body, on which a light-transmitting area is opened, and the light-transmitting area is used to correspond to the camera; a connecting part, fixedly connected to the main body; the connecting part is used to connect to the mobile electronic device so that the main body can be fixed to the camera of the mobile electronic device; a fill light source is arranged on the main body, and the fill light source is used to emit fill light of a specific band to the user's skin; the camera of the mobile electronic device can obtain the user's skin image under the fill light to form data information reflecting the user's skin.

[0006] In some embodiments of the present application, the fill light device also includes a light blocking cover, which is arranged around the outer edge of the main body and encloses the light-transmitting area and the fill light source therein, and the light blocking cover protrudes in a direction away from the main body and forms an opening at its end.

[0007] In some embodiments of the present application, the end opening of the light shield is elastic.

[0008] In some embodiments of the present application, the inner wall of the light shield is a reflective surface, and the reflective surface and the main body are combined to form a reflective cavity with one end open.

[0009] In some embodiments of the present application, in a direction away from the main body, the reflective cavity is a trumpet-shaped structure with an outer diameter gradually increasing.

[0010] In some embodiments of the present application, the fill light source includes a plurality of lamp beads, which are arranged in the reflective cavity, and the plurality of lamp beads are arranged at intervals around the periphery of the light-transmitting area.

[0011] In some embodiments of the present application, the light-transmitting area is a plurality of circular through holes spaced apart from each other, or the light-transmitting area is a rectangular through hole.

[0012] In some embodiments of the present application, the fill light device further includes a built-in battery, which is disposed on the connecting portion and electrically connected to the fill light source to supply power to the fill light source.

[0013] In some embodiments of the present application, the fill light device also includes a charging interface, which is arranged on the connecting portion and electrically connected to the fill light source; the charging interface can be connected to the mobile electronic device or an external power supply to supply power to the fill light source.

[0014] In some embodiments of the present application, the connecting portion includes a back panel and a side panel, the back panel is provided with a mounting opening, and the main body is fixed on the mounting opening of the back panel; the side panel is arranged at the outer edge of the back panel, and the side panel and the back panel are combined to form a mounting cavity, and the mounting cavity is used to install the mobile electronic device.

[0015] In some embodiments of the present application, the connecting portion includes a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are respectively arranged on both sides of the main body; the first connecting arm and the second connecting arm are used to clamp with both sides of the mobile electronic device to fix the main body on the mobile electronic device.

[0016] The present application also provides a skin detection system, comprising: a mobile electronic device, which includes a body and a camera in communication connection, the camera being arranged on the side wall of the body for capturing images of the user's skin; a fill light device for skin photo detection as described above, the connecting portion of the fill light device being connected to the mobile electronic device, the light-transmitting area on the main body corresponding to the camera, so that the camera can capture images of the user's skin under the fill light through the light-transmitting area.

[0017] It can be seen from the above technical solution that the beneficial effects of the utility model are:

[0018] The present application provides a fill light device and a skin detection system. The fill light device can be connected to a mobile electronic device, and the fill light source of the fill light device can emit stable standard light in a preset wavelength band to the user's skin to avoid interference of different ambient light on the mobile electronic device, ensure the consistency of light received by the camera of the mobile electronic device, thereby improving the accuracy of skin detection results, allowing users to accurately complete skin detection and obtain personalized beauty advice through the mobile electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the three-dimensional structure of the fill light device in some embodiments.

[0020] Figure 2 for Figure 1 Schematic diagram of the front view of the fill light device in FIG.

[0021] Figure 3 for Figure 1 Schematic side view of the fill light device in FIG.

[0022] Figure 4 for Figure 1 Schematic diagram of the rear view of the fill light device in .

[0023] Figure 5 This is a rear view diagram of the fill light device when the light transmission area is set to a rectangle.

[0024] Figure 6 This is a front view structural diagram of a fill light device without a built-in battery.

[0025] Figure 7 for Figure 6 Schematic diagram of the rear view structure of the fill light device in FIG.

[0026] Figure 8 Schematic diagram of the structure of a fill light device in another embodiment.

[0027] Figure 9 for Figure 8 Schematic diagram of the structure of installing the fill light device in the figure on a mobile electronic device.

[0028] The following are the descriptions of the reference numerals:

[0029] 100. Fill light device; 110. Main body; 111. Light-transmitting area; 120. Connecting part; 121. Back panel; 122. Side panel; 1221. Side hole; 123. First connecting arm; 124. Second connecting arm; 130. Fill light source; 140. Light shield; 150. Built-in battery; 160. Charging port; 161. Printed circuit; 162. Charging cable; 200. Mobile electronic device. DETAILED DESCRIPTION

[0030] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative in nature and not to limit the present invention.

[0031] In the description of this application, it should be understood that, in the embodiments shown in the drawings, indications of directions or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions will also change accordingly.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0033] The skin detection equipment currently on the market is easily interfered by natural light in different environments when obtaining the user's skin parameters. The different brightness and darkness of natural light will affect the accuracy of the skin acquisition results, making it impossible for users to accurately obtain their own skin condition information. Technical problem.

[0034] See also Figures 1 to 9 This embodiment provides a skin detection system, which includes a mobile electronic device 200 and a fill light device 100 disposed on the mobile electronic device 200. The fill light device 100 can emit fill light of a specific wavelength to the user's skin, allowing the mobile electronic device 200 to accurately capture skin images regardless of the user's lighting environment, thereby improving the accuracy of skin detection results.

[0035] In some embodiments, the mobile electronic device 200 may include a body and a camera in communication connection. The camera may be located on a side wall of the body to capture an image of the user's skin. It should be understood that the side wall includes any one or more of the upper, lower, left, right, front, and back sides of the body.

[0036] In some embodiments, a processor may be provided within the body, electrically connected to the camera. Computer software loaded within the processor allows images of the user's skin, captured by the camera, to be transmitted to the processor within the body for computational analysis, thereby enabling the user to obtain standardized skin parameters. For example, the processor may analyze the user's skin image to obtain parameters such as the user's skin color depth, the number of skin spots, and the degree of redness.

[0037] In some embodiments, the device may also be equipped with a wireless communication module. This module can connect to beauty devices such as beauty devices and hair removal devices via Wi-Fi, Bluetooth, or NFC. The device can transmit the user's skin data to the beauty device, hair removal device, or other beauty device. The beauty device can then select the most suitable beauty mode for the user's skin based on the user's skin parameters, effectively improving the beauty effect.

[0038] In some embodiments, mobile electronic device 200 can be a mobile phone, which is loaded with processing software to analyze and process the user's skin image to obtain skin information parameters, and then display the detected skin image and the analyzed skin information parameters through a corresponding user interface. Using mobile phones, which are highly popular and easy to install and use, users can quickly take photos and test their skin at any time, which can effectively improve the convenience of the skin detection system.

[0039] In other embodiments, the mobile electronic device 200 may also be a tablet, a beauty instrument with a camera, or other electronic detection device. It only needs to be able to take a photo of the user's skin and analyze and process the photo. Of course, the mobile electronic device may also be a mobile handheld device equipped with a camera and dedicated for skin detection.

[0040] See also Figures 1 to 9 In this embodiment, the fill light device 100 for skin photo detection includes a main body 110 , a connecting part 120 and a fill light source 130 .

[0041] The main body 110 is provided with a light-transmitting area 111, which corresponds to the camera of the mobile electronic device 200, so that the camera can be exposed from the light-transmitting area 111. The connecting portion 120 is connected to the main body 110, and the connecting portion 120 can be connected to the mobile electronic device 200, so that the main body 110 can be fixed to the camera of the mobile electronic device 200. The fill light source 130 is set on the main body 110 and can emit fill light of a specific wavelength band to the user's skin. The camera of the mobile electronic device 200 can obtain an image of the user's skin under the fill light to form parameters for reflecting the user's skin information.

[0042] Specifically, taking the mobile electronic device 200 as a mobile phone as an example, the main body 110 corresponds to the rear camera protruding from the rear side of the mobile phone, and the light-transmitting area 111 on the main body 110 can expose the rear camera to prevent the rear camera from being blocked. The connecting portion 120 is used to connect to the body of the mobile phone so that the main body 110 can be stably fixed on the rear camera. The fill light source 130 provided on the main body 110 can emit a stable, standard light of a preset wavelength, which is generally a broadband white light, to avoid interference of different ambient lights on the mobile electronic device 200, so that when the user is in a dark, reddish or purple lighting environment, it can also accurately obtain the user's skin color image information to provide accurate parameters for the beauty mode of the beauty instrument.

[0043] See also Figures 1 to 3 In some embodiments, the fill light device 100 further includes a light shield 140. The light shield 140 is disposed around the outer edge of the main body 110, protrudes in a direction away from the main body 110, and forms an opening at its end.

[0044] Furthermore, the inner wall of the light shield 140 is a reflective surface, which forms a reflective cavity with an open end together with the main body 110. In the direction away from the main body 110, the reflective cavity is a trumpet-shaped structure with an outer diameter gradually increasing.

[0045] Among them, a circle of light blocking cover 140 is set on the outer edge of the main body 110. The fill light emitted by the fill light source 130 is focused by the reflective surface of the light blocking cover 140, and then emitted from the opening of the light blocking cover 140 to the user's skin, which enables most of the fill light to be effectively concentrated on the user's skin surface.

[0046] The outer diameter of the reflective cavity gradually increases in the direction away from the main body 110 to form a trumpet-shaped structure. This makes the fill light more uniform after being reflected by the light shield 140, and the fill light can be irradiated on the user's skin with a more uniform angle and intensity.

[0047] At this time, the fill light source 130 can emit a higher brightness fill light to offset the interference of the surrounding ambient light. At this time, regardless of the external light brightness, color temperature, or color, the fill light source can significantly "overwhelm" the ambient light, thereby reducing the interference of the ambient light on the detection.

[0048] In some embodiments, the end opening of the light shield 140 is elastic and can be made of an elastic member such as rubber or silicone, which enables the light shield 140 to effectively fit the user's skin.

[0049] The open end of light shield 140 can be perfectly aligned with the area of ​​the user's skin that needs to be inspected. At this point, natural light from the external environment is completely blocked by light shield 140. Natural light cannot enter the reflective cavity of light shield 140 and will not affect or interfere with the user's skin imaging. This can further reduce the impact of external ambient light on the inspection process, thereby significantly improving the clarity and color reproduction of the image captured by the camera.

[0050] At this time, the raised design of the light shield 140 can also increase the depth of the fill light device 100, effectively increasing the distance between the fill light source 130 and the camera and the skin surface, so that the camera can obtain a more delicate and accurate skin image. Figure 1 and Figure 2 In some embodiments, the fill light source 130 includes a plurality of lamp beads, which are disposed in a reflective cavity formed by the light shield 140 , and the plurality of lamp beads are spaced around the periphery of the light-transmitting area 111 .

[0051] Specifically, the fill light source 130 can be an LED or other suitable light source element. When the user activates the skin detection device, the multiple lamps within the reflective cavity illuminate synchronously. The light emitted by the lamps is first reflected by the reflective surface of the inner wall of the reflective cavity before converging and irradiating the user's skin through the light outlet. Because the lamps are arranged at intervals around the light-transmitting area 111, light can be evenly illuminated from multiple angles on the skin surface, avoiding light concentration in a specific direction or area, and ensuring that the overall light distribution of the skin image captured by the camera is balanced.

[0052] Furthermore, the combination of multiple lamps provides flexible light source adjustment. By controlling the brightness or on / off status of each lamp, users can select different lighting modes based on their testing needs. For example, all lamps can be turned on for high-brightness fill light, suitable for detecting skin texture or details; or only some lamps can be turned on to reduce the light intensity, suitable for detecting color or skin color uniformity, to meet the testing needs of different skin conditions.

[0053] See also Figure 4 In some embodiments, the light-transmitting area 111 comprises a plurality of circular through-holes spaced apart from each other. The number of light-transmitting areas 111 may correspond to the number of rear cameras and rear flashes on the phone. For example, if a phone is equipped with a telephoto lens, a wide-angle lens, and a macro lens, the light-transmitting area 111 may be configured as three relatively large circular through-holes spaced apart from each other. Furthermore, the light-transmitting area 111 may also include a plurality of smaller through-holes spaced apart from each other to expose the phone's flash, thereby ensuring that normal photography is not affected.

[0054] See also Figure 5In some embodiments, the light-transmitting area 111 can be a large rectangular through-hole, fully exposing the raised portion of the phone's rear camera. In this case, the light-transmitting area 111 substantially covers the main body 110, forming a ring-shaped structure. Using rectangular through-holes can effectively reduce the manufacturing difficulty of the fill light device 100, eliminating the need to drill holes for each camera on the phone.

[0055] See also Figures 1 to 7 In some embodiments, the connection portion 120 may include a back panel 121 and side panels 122. The back panel 121 is provided with a mounting opening, and the main body 110 is fixed to the mounting opening of the back panel 121. The side panels 122 are provided at the outer edges of the back panel 121, and the side panels 122 and the back panel 121 together form a mounting cavity for mounting the mobile electronic device 200.

[0056] Specifically, the size and shape of the mounting opening of the back plate 121 are designed according to the main body 110 , so that the main body 110 can be fixed to the outer surface of the back plate 121 .

[0057] When the mobile electronic device 200 is a mobile phone, the size of the back panel 121 is adapted to the size of the mobile phone. In this case, the side panels 122 are arranged around the outer edge of the back panel 121, so that the entire connecting portion 120 forms a mobile phone case, so that the mobile phone can be inserted between the back panel 121 and the side panels 122. By setting the connecting portion 120 in the shape of a mobile phone case, the entire fill light device 100 can be installed on the mobile phone without affecting the normal use of the mobile phone. When it is necessary to detect the user's skin, the fill light source 130 of the fill light device 100 can be quickly turned on to illuminate the skin, conveniently and efficiently achieving accurate recognition of the skin image.

[0058] See also Figure 3 In some embodiments, a side hole 1221 may be further provided on the side circumference 122 of the connecting portion 120. The side hole 1221 may correspond to the function button design on the mobile phone, so that when the fill light device 100 is connected to the mobile phone, its function buttons can be used normally.

[0059] See also Figure 8 and Figure 9 In some embodiments, the connecting portion 120 may also include a first connecting arm 123 and a second connecting arm 124. The first connecting arm 123 and the second connecting portion 120 are respectively disposed on both sides of the main body 110; the first connecting arm 123 and the second connecting arm 124 are used to engage with both sides of the mobile electronic device 200 to fix the main body 110 on the mobile electronic device 200.

[0060] Specifically, a first connecting arm 123 and a second connecting arm 124 are provided at both ends of the main body 110. The first connecting arm 123 and the second connecting arm 124 can be made of elastic material or have a buckle design, so that the first connecting arm 123 and the second connecting arm 124 form a snap-fit ​​position. The two side surfaces in the width direction of the mobile phone can be snap-fitted with the first connecting arm 123 and the second connecting arm 124, respectively, so that the mobile phone is clamped between the first connecting arm 123 and the second connecting arm 124, thereby securing the main body 110 and the camera.

[0061] It is conceivable that in some other embodiments, the connecting portion 120 may also be a magnet that can be attracted to the back of the mobile phone to secure the main body 110 to the camera. Of course, the connecting portion 120 may also be a snap-fit ​​cavity formed by a panel that can directly engage the protruding rear camera portion of the mobile phone to secure it to the mobile phone.

[0062] See also Figure 1 and Figure 2 In some embodiments, the fill light device 100 further includes a built-in battery 150 . The built-in battery 150 is disposed on the connecting portion 120 and electrically connected to the fill light source 130 to supply power to the fill light source 130 .

[0063] Among them, the built-in battery 150 can be set on the outer surface of the back panel 121, and a switch can also be set on the side 122 of the connecting part 120 to control the on and off between the built-in battery 150 and the fill light source 130, so that the user can turn on the fill light source 130 when taking pictures of the skin, and there is no need to turn off the fill light source 130 when detecting and taking pictures of the user's skin.

[0064] In some embodiments, a wireless charging coil may be further provided on the back panel 121 , which may be electrically connected to the built-in battery 150 . A mobile phone with a wireless charging function may charge the built-in battery 150 via the wireless charging coil on the back panel 121 .

[0065] See also Figure 7 and Figure 9 In some embodiments, the fill light device 100 further includes a charging interface 160, which is disposed on the connecting portion 120 and electrically connected to the fill light source 130. The charging interface 160 can be connected to the mobile electronic device 200 or an external power source to supply power to the fill light source 130.

[0066] Specifically, such as Figure 7As shown, the charging port 160 can be provided on the lower inner wall of the side panel 122 and can be a male connector that is electrically connected to the fill light source 130 via a printed circuit 161. When the mobile phone is located in the mounting cavity formed by the back panel 121 and the enclosure, the charging port 160 can directly connect to the female connector of the mobile phone to power the fill light source 130 through the mobile phone.

[0067] Of course, in some embodiments, the charging interface 160 can also be connected to the built-in battery 150 through a circuit, so that the built-in battery 150 can be charged when the charging interface 160 is connected to a mobile phone, a mobile charging device or a power adapter.

[0068] See also Figure 9 In some embodiments, the charging port 160 may also be provided on the first connecting arm 123. The charging port 160 on the first connecting arm 123 may also be electrically connected to the fill light source 130 via a circuit. In this case, the charging port 160 may also be connected to the female port on the mobile phone via an external charging cable 162 to provide power to the fill light source 130.

[0069] In summary, this embodiment provides a fill light device 100 and a skin detection system. The fill light device 100 can be connected to a mobile electronic device 200, and the fill light source 130 of the fill light device 100 can emit stable, standard light of a preset band to the user's skin to avoid interference of different ambient light on the mobile electronic device 200, ensuring the consistency of light received by the camera of the mobile electronic device 200, thereby improving the accuracy of the skin detection results, allowing the user to accurately complete skin detection and obtain personalized beauty advice through the mobile electronic device 200.

[0070] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A light-filling device for skin photography detection, used to be connected to a mobile electronic device having at least one camera, characterized in that: The fill light device includes: A main body having a light-transmitting area formed thereon, the light-transmitting area being configured to correspond to the camera; a connecting portion fixedly connected to the main body; the connecting portion is used to connect to a mobile electronic device so that the main body can be fixed to the camera of the mobile electronic device; A fill light source is provided on the main body, and is used to emit fill light of a specific wavelength band to the user's skin; the camera of the mobile electronic device can obtain an image of the user's skin under the fill light to form data information reflecting the user's skin.

2. The light-filling device for skin photography and detection according to claim 1, characterized in that: The fill light device also includes a light shield, which is arranged around the outer edge of the main body and encloses the light-transmitting area and the fill light source therein. The light shield protrudes in a direction away from the main body and forms an opening at its end.

3. The light-filling device for skin photography and detection according to claim 2, characterized in that: The end opening of the light shield is elastic.

4. The light-filling device for skin photography and detection according to claim 2, characterized in that: The inner wall of the light shield is a reflective surface, and the reflective surface and the main body are combined to form a reflective cavity with one end open.

5. The light-filling device for skin photography and detection according to claim 4, characterized in that: In a direction away from the main body, the reflective cavity is a trumpet-shaped structure with an outer diameter gradually increasing.

6. The light-filling device for skin photography and detection according to claim 4, characterized in that: The fill light source includes a plurality of lamp beads, which are arranged in the reflective cavity and are arranged around the periphery of the light-transmitting area at intervals.

7. The light-filling device for skin photography and detection according to claim 1, characterized in that: The light-transmitting area is a plurality of circular through holes spaced apart from each other, or the light-transmitting area is a rectangular through hole.

8. The light-filling device for skin photography and detection according to claim 1, characterized in that: The fill light device further includes a built-in battery, which is disposed on the connecting portion and electrically connected to the fill light source to supply power to the fill light source.

9. The light-filling device for skin photography and detection according to claim 1, characterized in that: The fill light device further includes a charging interface, which is provided on the connecting portion and electrically connected to the fill light source; the charging interface can be connected to the mobile electronic device or an external power source to supply power to the fill light source.

10. The light-filling device for skin photography and detection according to claim 1, characterized in that: The connecting part includes a back panel and side panels, the back panel is provided with a mounting opening, and the main body is fixed on the mounting opening of the back panel; the side panels are arranged on the outer edge of the back panel, and the side panels and the back panel are combined to form a mounting cavity, and the mounting cavity is used to install the mobile electronic device.

11. The light-filling device for skin photography and detection according to claim 1, characterized in that: The connecting portion includes a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are respectively arranged on both sides of the main body; the first connecting arm and the second connecting arm are used to clamp with the two sides of the mobile electronic device to fix the main body on the mobile electronic device.

12. A skin detection system, characterized in that: include: A mobile electronic device comprising a body and a camera in communication connection, wherein the camera is disposed on a side wall of the body and is used to capture an image of a user's skin; The fill light device for skin photography detection according to any one of claims 1 to 11, wherein the connecting portion of the fill light device is connected to the mobile electronic device, and the light-transmitting area on the main body corresponds to the camera, so that the camera can capture an image of the user's skin under the fill light through the light-transmitting area.

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