External camera module and tablet electronic equipment

Abstract

The utility model relates to an external camera module and a tablet electronic device. The external camera module comprises a module shell, a front cover plate, a first front-facing camera and a second front-facing camera, wherein the first front-facing camera and the second front-facing camera are contained in the module shell. A front view window is formed in the front end of the module shell. And the front cover plate covers the foresight window and is made of a light-transmitting material. The first front-facing camera and the second front-facing camera are arranged at the foresight window and can collect images through the front cover plate, the shooting direction of the first front-facing camera faces a user, and the second front-facing camera is arranged in a declination mode relative to the first front-facing camera. And the shooting direction of the second front camera faces the desktop in front of the user. The flat plate type electronic equipment comprises an external camera module. The external camera module can collect more image information.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tablet electronic equipment, in particular to an external camera module and a tablet electronic equipment. BACKGROUND

[0002] For example, in order to display more information, a tablet electronic equipment with a display screen is usually used. At present, the tablet electronic equipment on the market is also provided with a camera, which is used to collect image information of a user, such as monitoring the sitting posture and listening situation of the user. SUMMARY

[0003] The present application provides an external camera module and a tablet electronic equipment, which can collect more image information.

[0004] An external camera module comprises:

[0005] A module shell, a front window is formed at the front end of the module shell;

[0006] A front cover plate is arranged at the front window and is made of a light-transmissive material;

[0007] A first front camera and a second front camera are accommodated in the module shell, the first front camera and the second front camera are arranged at the front window and can collect images through the front cover plate, a shooting direction of the first front camera faces a user, and the second front camera is arranged downwardly relative to the first front camera, and a shooting direction of the second front camera faces a table in front of the user.

[0008] Optionally, the front cover plate is downwardly inclined, and an inclination direction of the front cover plate is the same as that of the second front camera, an upper end of the front cover plate is not lower than an upper edge of the first front camera, and a lower end of the front cover plate is not higher than a lower edge of the second front camera.

[0009] Optionally, the front cover plate is downwardly inclined relative to a vertical plane, and an inclination angle is 20°-40°.

[0010] Optionally, an optical axis of the first front camera is a horizontal axis, and a downward inclination angle of an optical axis of the second front camera relative to the optical axis of the first front camera is 25°-40°; and / or

[0011] The first front camera and the second front camera are arranged laterally apart from each other at the front window, and a distance between the first front camera and the second front camera is **mm-**mm.

[0012] Optionally, the module shell comprises a front receiving portion at the front end and a rear receiving portion at the rear end, the front receiving portion is connected with the rear receiving portion and protrudes forwardly from the rear receiving portion, the first front camera and the second front camera are received in the front receiving portion, and a recess for cooperating with a mounted device is arranged on the lower surface of the front receiving portion.

[0013] Optionally, the front receiving portion and the rear receiving portion are connected at the upper ends thereof to form a "7" shaped bending structure.

[0014] Optionally, the ratio of the size of the front receiving portion to the size of the rear receiving portion in the front-rear direction is 6-6.5; and / or

[0015] The ratio of the size of the front receiving portion to the size of the rear receiving portion in the up-down direction is 0.25-0.3.

[0016] Optionally, the module shell comprises a skeleton of rigid material and a decorative member covering the skeleton, and the decorative member is formed as an appearance member of the module shell.

[0017] Optionally, the external camera module further comprises a display panel received in the module shell and a touch switch electrically connected with the display panel, the display panel faces the front cover plate and displays images through the front cover plate, the touch switch is provided with a touch surface for being touched by a hand, the touch surface is exposed outside the module shell, and the touch surface is used for turning on or off the display panel.

[0018] Optionally, the display panel is arranged between the first front camera and the second front camera.

[0019] Optionally, the module shell is further provided with a rear view window, the external camera module further comprises a rear cover plate covering the rear view window and a rear camera received in the module shell, and the rear camera can collect images through a light transmission area of the rear cover plate; and / or

[0020] The field of view of at least one of the first front camera and the second front camera is adjustable.

[0021] A tablet electronic device, comprising:

[0022] a tablet body;

[0023] The external camera module as claimed in any one of the preceding claims is mounted on the tablet body.

[0024] Optionally, the external camera module is mounted at the frame of the tablet body and is separately arranged on the front side and the back side of the tablet body, the module shell is provided with a recess matched with the tablet body, and the external camera module is attached to the tablet body on the frame, the front side and the back side of the tablet body.

[0025] Optionally, the tablet body comprises a display screen, an angle between the optical axis of the first front camera and the display screen is 80°-110°, and / or an angle between the optical axis of the second front camera and the display screen is 50°-75°.

[0026] Optionally, the external camera module is detachably mounted on the tablet body; and / or

[0027] the external camera module is movably mounted on the tablet body; and / or

[0028] a ratio of the thickness dimension of the tablet body to the dimension of the external camera module in this direction is 0.35-0.45; and / or

[0029] the tablet body or the external camera module is further provided with a distance sensor and / or an ambient light sensor.

[0030] The application provides an external camera module and a tablet electronic device, wherein the shooting direction of the first front camera faces the user, for example, for collecting the image information of the user, such as the sitting posture, the expression, and the like of the user. The second front camera is arranged downward relative to the first front camera, and the shooting direction of the second front camera faces the table in front of the user, for example, for collecting the image of the object to be shot on the table in front of the user, such as the image information of the test paper and the toy, so that more image information can be collected, and the teaching and working process can be more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a front view of the tablet electronic device according to an example embodiment of the application;

[0032] Figure 2 is Figure 1 a left view of the tablet electronic device according to the example embodiment of the application;

[0033] Figure 3 is Figure 1 a top view of the tablet electronic device according to the example embodiment of the application;

[0034] Figure 4 is an enlarged view of part of the structure of the tablet electronic device, wherein the front cover plate and the module shell are in a disassembled state;

[0035] Figure 5 yes Figure 4 BB section view in the middle;

[0036] Figure 6 This is a schematic diagram of the shooting field of view of the second front-facing camera;

[0037] Figure 7 yes Figure 4 AA section view in the middle;

[0038] Figure 8 This is a side view of the external camera module;

[0039] Figure 9 This is an exploded view of the external camera module.

[0040] Explanation of reference numerals in the attached figures:

[0041] 100 tablet-type electronic devices;

[0042] Tablet body 10; Display screen 101; Proximity sensor 11; Ambient light sensor 12;

[0043] External camera module 20; module housing 21; front viewing window 210; front receiving part 211; rear receiving part 212; recess 213; rear viewing window 214; frame 21a; decorative part 21b;

[0044] Front cover 22; first front camera 23; second front camera 24; display panel 25; rear cover 26; light-transmitting area 260; bracket 27; adhesive backing 28; electronic components 291; protective cover 292. Detailed Implementation

[0045] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0046] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0047] Please refer toFigure 1 and Figure 2 , Figure 1 This is a front view of a flat panel electronic device 100 shown as an exemplary embodiment of this application. Figure 2 for Figure 1 The left view of the flat-panel electronic device 100 shown in the figure.

[0048] This application provides a tablet electronic device 100, which includes a tablet body 10 and an external camera module 20. The tablet body 10 includes, but is not limited to, a tablet computer, a tablet learning machine, and a tablet game console. The external camera module 20 is mounted on the tablet body 10 and is an image acquisition module used to acquire images.

[0049] This application does not specifically limit the location or method of mounting the external camera module 20 on the tablet body 10. The location of the external camera module 20 on the tablet body 10 includes, but is not limited to, the front, back, or bezel. The mounting method of the external camera module 20 on the tablet body 10 includes, but is not limited to, detachable connection.

[0050] In one embodiment, the external camera module 20 is movably mounted on the tablet body 10, and the movement includes, but is not limited to, linear movement or fixed-axis rotation, which makes the field of view of the external camera module 20 adjustable. In other embodiments, the external camera module 20 can also be connected to the tablet body 10 through a deformable component, realizing multi-degree-of-freedom deflection of the external camera module 20 relative to the tablet body 10.

[0051] exist Figure 1 In the illustrated embodiment, the external camera module 20 is detachably mounted to the tablet body 10. The mounting method includes, but is not limited to, snap-fit ​​or bolt connection, which facilitates the replacement and maintenance of the external camera module 20. More precisely, the external camera module 20 is detachably mounted to the frame of the tablet body 10, wherein a portion of the external camera module 20 is located on the front side of the tablet body 10, and the remainder is located on the back side of the tablet body 10.

[0052] It should be noted that the side of the tablet body 10 with the display screen 101 is the front side, and the side facing away from the display screen 101 is the back side. The front side is the display surface or presentation surface of the tablet body 10, which can display or show image information. Furthermore, as... Figure 2 As shown, the external camera module 20 is attached to the tablet body 10 on the frame, front side and back side, so that the external camera module 20 occupies little external space, thereby making the overall structure of the tablet electronic device 100 more compact.

[0053] In one embodiment, such as Figure 1 As shown, the tablet body 10 is also equipped with a distance sensor 11 and / or an ambient light sensor 12. The distance sensor 11 can obtain the distance between the user and the tablet body 10, and can determine the user's posture by combining the information collected by the external camera module 20, so as to remind the user to correct their sitting posture. The ambient light sensor 12 can collect the ambient light information of the space where the user is located, so as to remind the user to adjust the brightness of the light. In this technical solution, the distance sensor 11 and / or the ambient light sensor 12 are set inside the tablet body 10, so as not to affect the modular assembly of the components inside the external camera module 20, and to minimize the change in the original structure of the tablet electronic device 100, which is conducive to reducing the size of the external camera module 20.

[0054] In some other embodiments, the distance sensor 11 and / or the ambient light sensor 12 may also be disposed within the external camera module 20, thereby making full use of the internal space of the external camera module 20.

[0055] Please refer to Figure 3 , Figure 3 yes Figure 1 The image shows a top view of a flat-panel electronic device 100.

[0056] In one embodiment, the ratio of the thickness dimension t1 of the tablet body 10 to the dimension t2 of the external camera module 20 in this direction is 0.35 to 0.45, for example, it can be 0.35, 0.4, or 0.45, but is not limited to these. The "thickness dimension" referred to here means the dimension from the front side of the tablet body 10 to the back side of the tablet body 10, that is, the dimension in the front-to-back direction (see [reference]). Figure 5 (arrow markers in the text).

[0057] In one alternative embodiment, the thickness t1 of the tablet body 10 is 7.25 mm, and the thickness t2 of the external camera module 20 is 18.2 mm, with a t1:t2 ratio of 0.4, thus achieving a thinner and lighter design for the external camera module 20.

[0058] In this embodiment, the external camera module 20 is mounted on the frame of the tablet body 10, specifically on one of the uppermost frames of the tablet body 10 when in use. The front portion of the external camera module 20 is located on the front side of the tablet body 10, and the rear portion is located on the back side of the tablet body 10. The junction of the front and rear portions is mounted on the frame of the tablet body 10. This arrangement ensures that the thickness of the external camera module 20 partially overlaps with the thickness of the tablet body 10, resulting in a more compact mounting structure and a smaller overall thickness of the tablet electronic device 100. Of course, in other embodiments, the external camera module 20 can be entirely mounted on the front side or the entire back side of the tablet body 10.

[0059] Please refer to Figure 4 , Figure 4 This is an enlarged view of the partial structure of the flat panel electronic device 100, in which the front cover 22 and the module housing 21 are in a disassembled state.

[0060] The external camera module 20 includes a module housing 21, a front cover 22, a first front-facing camera 23, and a second front-facing camera 24. A front viewing window 210 is formed at the front end of the module housing 21. The front cover 22, made of a light-transmitting material, covers the front viewing window 210 and includes, but is not limited to, a light-transmitting glass cover. In one embodiment, the front cover 22 can be a dark-colored transparent glass cover, which allows light to pass through while also blocking the front viewing window 210, preventing the first front-facing camera 23 and the second front-facing camera 24 from being exposed and thus protecting them.

[0061] The first front-facing camera 23 and the second front-facing camera 24 are housed within the module housing 21 and positioned at the front viewing window 210. Both cameras can capture images of the front of the tablet body 10 through the front cover 22. The first front-facing camera 23 is angled towards the user, for example, to capture the user's image, including but not limited to the user's posture, expression, and facial features. The second front-facing camera 24 is tilted downwards relative to the first front-facing camera 23, and its shooting direction is towards the desktop in front of the user, for example, to capture images of objects on the desktop, including but not limited to test papers, toys, etc. Alternatively, the shooting direction of the second front-facing camera 24 can be understood as being tilted relative to the display surface of the tablet body 10. Here, "shooting direction" refers to the direction of the camera's optical axis.

[0062] The terms "up," "down," "left," and "right" used in this article refer to the up, down, left, and right positions of the flat panel body 10 in its usage state. For specific reference... Figure 1 and Figure 5 Text tags in the text.

[0063] The tablet electronic device 100 provided in this application, by setting a first front-facing camera 23 and a second front-facing camera 24, can collect more image information, making teaching or other work processes more convenient. It should also be noted that, compared with traditional technologies that add a reflector, a pop-up front camera, or a flip-up camera to the front camera position, the tablet electronic device 100 provided in this application simplifies the structure and eliminates the need for additional accessories. The first front-facing camera 23 and the second front-facing camera 24 can be housed within the module housing 21, greatly improving the stability of the operation of the first front-facing camera 23 and the second front-facing camera 24, and reducing the failure rate and cost.

[0064] In an embodiment where the tablet body 10 is set as a tablet learning machine, after the external camera module 20 is turned on, the user's sitting posture can be captured by the first front camera 23, and information on the user's desktop can be collected by the second front camera 24. For example, the information written by the user can be collected, or the question information that the user needs to analyze can be collected, which facilitates the linkage between the tablet body 10 and the user. For example, it can determine whether the user's written information is accurate, or it can collect the question information displayed by the user, which is convenient for analyzing the tablet body 10. By setting the shooting direction of the second front camera 24 to be tilted relative to the display surface of the tablet body 10, it is possible to take a top shot, which can quickly collect image information for finger reading learning and photo modification of test papers.

[0065] It should be noted that the front cover 22 is a one-piece structure used to cover both the first front-facing camera 23 and the second front-facing camera 24. That is, the same front cover 22 can simultaneously cover both the first front-facing camera 23 and the second front-facing camera 24. Compared with the prior art where multiple cameras are covered by multiple covers, the number of structural components is reduced, the assembly process is simplified, and the structural layout is more compact. In this embodiment, the front cover 22 is set as an oblong cover with semi-circular ends and a rectangular middle section. The first front-facing camera 23 and the second front-facing camera 24 are arranged side by side at both ends of the length direction of the front cover 22.

[0066] Please refer to Figure 5 and Figure 6 , Figure 5 yes Figure 4 BB section view in the middle. Figure 6 This is a schematic diagram of the shooting field of view of the second front-facing camera 24.

[0067] In one embodiment, the front cover plate 22 is tilted downwards, and the tilt direction of the front cover plate 22 is the same as that of the second front-facing camera 24. The upper end of the front cover plate 22 is not lower than the upper edge of the first front-facing camera 23, and the lower end of the front cover plate 22 is not higher than the lower edge of the second front-facing camera 24. That is, the front cover plate 22 is also configured to tilt towards the second front-facing camera 24, and its lower end is not higher than the lower edge of the second front-facing camera 24. This avoids the front cover plate 22 obstructing the field of view of the second front-facing camera 24. Simultaneously, the upper end of the front cover plate 22 is not lower than the upper edge of the first front-facing camera 23, thus ensuring that the front cover plate 22 does not obstruct the field of view of the first front-facing camera 23.

[0068] In one embodiment, such as Figure 5 As shown, the tablet body 10 includes a display screen 101, and the angle α between the optical axis O2 of the second front-facing camera 24 and the display screen 101 is 50° to 75°. For example, it can be 50°, 55°, 60°, 65°, 70°, or 75°. In this technical solution, as... Figure 6 As shown, when the tablet body 10 is upright and displays image information through the display surface, it is convenient for the second front camera 24 to take pictures from above. By selecting an tilt angle of 50° to 75° and combining it with the control of the focal length of the second front camera 24, it is convenient to collect image information of an area of ​​approximately 240 (width) * 340 (height) mm in front of the user through the second front camera 24. For example, it is convenient to realize the linkage between teaching and test papers or paper, making teaching more convenient.

[0069] In one embodiment, such as Figure 5 As shown, the front cover plate 22 is tilted downwards, with the vertical plane as the reference plane. The angle β of the front cover plate 22 tilting downwards relative to the vertical plane is 20° to 40°, for example, it can be 20°, 22°, 25°, 30°, 33°, 35°, 38°, or 40°. With this configuration, the front cover plate 22 forms a certain tilt angle with the display surface of the tablet body 10, which makes it easier to tilt the second front camera 24 relative to the display surface of the tablet body 10. This facilitates the assembly of the second front camera 24 within the module housing 21 and also helps to reduce the overall thickness of the external camera module 20, minimizing the thickness difference between the camera module 20 and the tablet body 10.

[0070] Please refer to Figure 7 , Figure 7 yes Figure 4 AA section view in the image.

[0071] In one embodiment, the tablet body 10 includes a display screen 101, and the angle γ between the optical axis O1 of the first front-facing camera 23 and the display screen 101 is 80° to 110°, such as 80°, 82°, 85°, 90°, 92°, 95°, 100°, 102°, 105°, 108°, 110°, but not limited to these. This is based on the consideration that the tablet electronic device 100 is usually positioned in front of the user during use, but the tablet electronic device 100 may have a certain tilt angle. By setting the angle between the shooting direction of the first front-facing camera 23 and the display surface to 80° to 110°, the first front-facing camera 23 can better capture the user's posture, and the shooting direction of the first front-facing camera 23 can be perpendicular to or nearly perpendicular to the user, thus ensuring the accuracy of the acquisition. It is understandable that when the angle between the shooting direction of the first front-facing camera 23 and the display surface is greater than 90°, the shooting direction of the first front-facing camera 23 will be slightly tilted away from the display surface. This design can compensate for the angular deviation caused by the placement of the tablet electronic device 100 and improve the acquisition accuracy. It should be noted that the shooting direction of the first front-facing camera 23 can be understood as the direction of the optical axis O1 of the first front-facing camera 23.

[0072] In an alternative embodiment, the optical axis O1 of the first front-facing camera 23 is set as a horizontal axis, with an angle of 90 degrees between it and the display screen 101. The optical axis O2 of the second front-facing camera 24 has a downward tilt angle of 25° to 40° relative to the optical axis O1 of the first front-facing camera 23. Considering that when using the tablet electronic device 100, users usually lean the tablet body 10 against the base and in a backward tilted state, this ensures that the user is within the shooting field of view of the first front-facing camera 23, while also ensuring that the area where the object to be photographed is placed on the user's table is within the shooting field of view of the second front-facing camera 24.

[0073] In one embodiment, the first front-facing camera 23 and the second front-facing camera 24 are arranged laterally at a distance of 30mm to 40mm from the front viewing window 210. For example, the distance could be 30mm, 32mm, 35mm, 38mm, or 40mm, but is not limited to these values. In other words, the first front-facing camera 23 and the second front-facing camera 24 are arranged at a distance along the length of their respective frame, which reduces the overall height of the tablet electronic device 100.

[0074] In one embodiment, the external camera module 20 is positioned at the top of the tablet body 10, which has a vertical height of 150mm to 400mm. This arrangement facilitates overhead shots via the second front-facing camera 24 and allows for the display of more information through the tablet body 10. In an alternative embodiment, the height of the tablet body 10 is set to 230mm. Here, "top" refers to the uppermost edge of the tablet body 10 in its active state.

[0075] Please refer to Figure 8 , Figure 8 This is a side view of the external camera module 20.

[0076] In one embodiment, the module housing 21 includes a front receiving portion 211 at the front end and a rear receiving portion 212 at the rear end. The front receiving portion 211 is connected to the rear receiving portion 212 and protrudes forward from the rear receiving portion 212. The front receiving portion 211 forms a front viewing window 210, and the first front-facing camera 23 and the second front-facing camera 24 are housed in the front receiving portion 211. The lower surface of the front receiving portion 211 is provided with a recess 213 for cooperating with the mounted device. This configuration leaves space below the front receiving portion 211, which makes it easier to utilize the shape of the module housing 21 to achieve mating with the tablet body 10, resulting in a tighter fit at the mating point.

[0077] exist Figure 8 In the embodiment shown, the upper ends of the front receiving portion 211 and the rear receiving portion 212 are connected to form a bent structure that is roughly in the shape of a "7". That is, the front receiving portion 211 is formed as a horizontal part of the shape of a "7", and the rear receiving portion 212 is formed as a vertical part of the shape of a "7", which makes the structure simpler and more compact.

[0078] exist Figure 8 In the illustrated embodiment, the ratio of the front receiving portion 211's dimension t3 in the front-rear direction to the rear receiving portion 212's dimension t4 in the front-rear direction is 6 to 6.5, for example, it can be 6, 6.1, 6.2, 6.3, 6.4, or 6.5, but is not limited to these. Here, "front-rear direction" refers to... Figure 5 The front and back directions shown are consistent. In a specific embodiment, t3 is set to 15.5 mm, t4 is set to 2.5 mm, and the t3:t4 ratio is 6.2.

[0079] exist Figure 8In the illustrated embodiment, the ratio of the vertical dimension h1 of the front receiving portion 211 to the vertical dimension h2 of the rear receiving portion 212 is 0.25 to 0.3, for example, it can be 0.25, 0.26, 0.27, 0.28, 0.29, or 0.3, but is not limited to these. Here, "vertical direction" refers to... Figure 1 The vertical direction shown is consistent. In a specific embodiment, h1 is set to 9mm, h2 is set to 33mm, and the ratio of h1 to h2 is 0.27.

[0080] exist Figure 8 In the embodiment shown, the outer surface of the front receiving portion 211 is provided with a rounded transition at the turning point. This rounded transition makes the outer surface of the front receiving portion 211 a smooth arc surface at the turning point. When the external camera module 20 is dropped, it can reduce or avoid stress concentration in the module shell 21, reduce pressure, improve the impact resistance of the module shell 21, reduce the failure rate, and also help improve the aesthetics of the appearance.

[0081] Please refer to Figure 9 , Figure 9 This is an exploded view of the external camera module 20.

[0082] In one embodiment, the module housing 21 includes a rigid material frame 21a and a decorative element 21b attached to the frame 21a, the decorative element 21b forming the exterior appearance of the module housing 21. This configuration increases the strength of the module housing 21, thereby increasing the impact resistance of the external camera module 20 when dropped. The frame 21a may include, but is not limited to, a magnesium alloy frame or an aluminum alloy frame. In an alternative embodiment, the frame 21a may be integrally injection molded with the decorative element 21b as an insert, but this is not a limitation.

[0083] In one embodiment, such as Figure 9As shown, the external camera module 20 also includes a display panel 25 housed within the module housing 21 and a touch switch (not shown) electrically connected to the display panel 25. The display panel 25 faces the front cover 22 and can transmit light through the front cover 22 to display images. The touch switch has a touch surface for human touch, which is exposed on the outside of the module housing 21. The touch surface is used to turn the display panel 25 on or off. The display panel 25 may include, but is not limited to, an LED panel. In this embodiment, the display panel 25 serves as an auxiliary display screen, which can display auxiliary information such as time, date, temperature, and light intensity. The auxiliary display screen can also display prompts to the user, such as prompting the user to take a proper rest or correct their posture. The combination of the auxiliary display screen and the display screen 101 of the main body 10 enriches the functionality of the tablet electronic device 100. As an auxiliary display screen, the display panel 25 can be turned on by the touch switch according to user needs, thus reducing energy consumption and extending battery life. It should be noted that the touch surface of the touch switch can be coplanar with the outer surface of the module housing 21, thereby improving the appearance of the module housing 21.

[0084] In one embodiment, the display panel 25 is disposed between the first front-facing camera 23 and the second front-facing camera 24. That is, a gap is left between the first front-facing camera 23 and the second front-facing camera 24, and the display panel 25 is disposed within this gap. This arrangement allows the display panel 25 to effectively utilize space and avoid waste. It should be noted that, to avoid the field of view of the first front-facing camera 23 overlapping with that of the second front-facing camera 24, the first front-facing camera 23 and the second front-facing camera 24 should be separated by a preset distance, thus forming a gap between them, as described above. The placement of the display panel 25 effectively utilizes this gap, avoiding waste. Furthermore, the display panel 25 is located on the rear side of the front cover 22, preventing the user from directly touching the display panel 25. Instead, the user turns the display panel 25 on or off via a touch switch. This protects the display panel 25 and allows the use of a lower-cost LED panel, reducing costs.

[0085] In one embodiment, such as Figure 9 As shown, the module housing 21 also has a rear view window 214. The external camera module 20 further includes a rear cover plate 26 covering the rear view window 214 and a rear camera (not shown) housed within the module housing 21. The rear camera can capture images through the light-transmitting area of ​​the rear cover plate 26. With this configuration, the external camera module 20 also integrates a rear camera, providing more shooting functions.

[0086] exist Figure 9In the illustrated embodiment, the rear cover 26 has a light-transmitting area 260, and the rear camera is positioned directly opposite the light-transmitting area 260. The light-transmitting area 260 can be configured as a light-transmitting hole or made of a light-transmitting material. The external camera module 20 can also be equipped with a fill light, which can provide illumination for the rear camera. Correspondingly, a light-transmitting area can also be provided on the rear cover 26 opposite to the fill light, and the light-transmitting area includes, but is not limited to, a fill light hole or a light-transmitting material.

[0087] In one embodiment, the field of view of at least one of the first front-facing camera 23 and the second front-facing camera 24 is adjustable. For example, the first front-facing camera 23 can be dynamically adjusted, such as tilting up or down. The second front-facing camera 24 can also be dynamically adjusted, such as tilting up or down. Both the first front-facing camera 23 and the second front-facing camera 24 can be manually or automatically adjusted.

[0088] exist Figure 9 In the illustrated embodiment, the external camera module 20 further includes a bracket 27, wherein the first front-facing camera 23 and the second front-facing camera 24 are both mounted on the horizontal ends of the bracket 27. The front cover plate 22 is bonded to the module housing 21 by adhesive 28, specifically to the front end face of the decorative piece 21b.

[0089] exist Figure 9 In the illustrated embodiment, the external camera module 20 further includes an electronic component 291 and a protective cover 292. The electronic component 291 is fixedly installed on the module housing 21 and is used for electrical connection with the tablet body 10 to achieve signal transmission. The protective cover 292 covers the electronic component 291 and protects it. The electronic component 291 includes, but is not limited to, FPC wires and connectors connected to the wires. It should be noted that the external camera module 20 can be placed alone with the protective cover 292 installed. After removing the protective cover 292, it can be electrically connected to the tablet body 10 through the electronic component 291.

[0090] In one embodiment, the tablet body 10 may include a processor connected to a first front-facing camera 23, a second front-facing camera 24, a proximity sensor 11, and an ambient light sensor 12. Through the connection between the processor and the second front-facing camera 24, the processor can analyze information captured from above to easily determine the content of the user's paper or writing; through the connection between the processor and the first front-facing camera 23, it facilitates correction of the user's posture; through the connection between the processor and the ambient light sensor 12, it facilitates determination of the ambient light intensity in the user's space, prompting the user to adjust the lighting intensity; and through the connection between the processor and the proximity sensor 11, it facilitates correction of the user's posture.

[0091] In some embodiments, the external camera module 20 can be connected to the outer casing of the tablet body 10 via a module housing 21. For example, the module housing 21 is separately configured from the outer casing. The first front-facing camera 23 and the second front-facing camera 24 are first installed inside the module housing 21, and then the module housing 21 is connected to the outer casing, enabling modular assembly. The connection between the module housing 21 and the outer casing includes, but is not limited to, bolt connections and welding.

[0092] In some other embodiments, the module housing 21 and the housing of the flat plate body 10 are configured as an integral structure, such as by injection molding.

[0093] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An external camera module, characterized in that, include: The module casing has a front-view window at the front end; The front cover, which covers the front viewing window, is made of a light-transmitting material; A first front-facing camera and a second front-facing camera are housed within the module housing. The first front-facing camera and the second front-facing camera are positioned at the front viewing window and can capture images through the front cover. The first front-facing camera faces the user, while the second front-facing camera is tilted downwards relative to the first front-facing camera and faces the desktop in front of the user.

2. The external camera module according to claim 1, characterized in that, The front cover plate is tilted downwards in the same direction as the second front camera. The upper end of the front cover plate is not lower than the upper edge of the first front camera, and the lower end of the front cover plate is not higher than the lower edge of the second front camera.

3. The external camera module according to claim 2, characterized in that, The front cover plate is inclined downward relative to the vertical surface at an angle of 20° to 40°.

4. The external camera module according to claim 1, characterized in that, The optical axis of the first front-facing camera is set to a horizontal axis, and the downward tilt angle of the optical axis of the second front-facing camera relative to the optical axis of the first front-facing camera is 25° to 40°; and / or The first front-facing camera and the second front-facing camera are arranged horizontally at a distance of 30mm to 40mm from each other at the front viewing window.

5. The external camera module according to claim 1, characterized in that, The module housing includes a front receiving portion at the front end and a rear receiving portion at the rear end. The front receiving portion is connected to the rear receiving portion and protrudes forward from the rear receiving portion. The first front-facing camera and the second front-facing camera are housed in the front receiving portion. The lower surface of the front receiving portion is provided with a recess for cooperating with the mounted device.

6. The external camera module according to claim 5, characterized in that, The upper ends of the front receiving part and the rear receiving part are connected to form a bent structure in the shape of a "7".

7. The external camera module according to claim 5, characterized in that, The ratio of the front receiving portion to the rear receiving portion in the front-to-back direction is 6 to 6.5; and / or The ratio of the dimensions of the front receiving portion to the rear receiving portion in the vertical direction is 0.25 to 0.

3.

8. The external camera module according to any one of claims 1 to 7, characterized in that, The module housing includes a rigid material frame and a decorative element covering the frame, the decorative element forming the exterior part of the module housing.

9. The external camera module according to claim 8, characterized in that, The external camera module also includes a display panel housed within the module housing and a touch switch electrically connected to the display panel. The display panel faces the front cover and can display images through the front cover. The touch switch has a touch surface for human touch and is exposed on the outside of the module housing. The touch surface is used to turn the display panel on or off.

10. The external camera module according to claim 9, characterized in that, The display panel is located between the first front-facing camera and the second front-facing camera.

11. The external camera module according to any one of claims 1 to 7, characterized in that, The module housing is also provided with a rear view window. The external camera module also includes a rear cover plate covering the rear view window and a rear camera housed in the module housing. The rear camera can capture images through the light-transmitting area of ​​the rear cover plate. and / or The field of view of at least one of the first front-facing camera and the second front-facing camera is adjustable.

12. A flat-panel electronic device, characterized in that, include: Tablet body; The external camera module as described in any one of claims 1 to 11, wherein the external camera module is mounted on the tablet body.

13. The flat panel electronic device according to claim 12, characterized in that, The external camera module is mounted on the frame of the tablet body and is located on the front and back sides of the tablet body. The outer shell of the module has a recess that matches the tablet body. The external camera module is in close contact with the tablet body on the frame, front and back sides.

14. The flat panel electronic device according to claim 12, characterized in that, The tablet body includes a display screen, the optical axis of the first front-facing camera is at an angle of 80° to 110° with the display screen, and / or the optical axis of the second front-facing camera is at an angle of 50° to 75° with the display screen.

15. The flat panel electronic device according to any one of claims 12 to 14, characterized in that, The external camera module is detachably mounted on the tablet body; and / or The external camera module can be movably mounted on the tablet body; and / or The ratio of the thickness of the tablet body to the dimension of the external camera module in this direction is 0.35 to 0.45; and / or The tablet body or the external camera module is also equipped with a distance sensor and / or an ambient light sensor.

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