Laser television and automatic screen entering device

Abstract

The utility model relates to a laser television and an automatic screen entering device, the automatic screen entering device is arranged outside laser projection equipment, and the automatic screen entering device comprises a camera and a circuit board. The camera is used for acquiring a projection picture of the laser projection equipment and an image of a screen. And the circuit board is electrically connected with the camera, is also used for being electrically connected with laser projection equipment, and is used for transmitting an image to the laser projection equipment. As the circuit board is electrically connected with the laser projection equipment, the camera acquires an image including a projection picture and a screen, and the image is transmitted to the laser projection equipment through the circuit board. After the laser projection equipment receives the image including the projection picture and the screen, automatic correction can be realized when the picture is not matched with the screen, so that an automatic screen entering function is realized, manual adjustment is not needed, and the product performance is improved.

Description

Technical Field

[0001] This application relates to the field of laser television technology, and in particular to a laser television and an automatic screen entry device. Background Technology

[0002] As laser TVs mature, the demands for user experience are increasing. Most laser TVs currently on the market, and older models, lack automatic screen alignment, meaning the projected image cannot automatically adjust to match the screen. For laser TVs without automatic screen alignment, electric or manual casters are often used to align the projected image with the screen. However, after alignment, the casters and TV stand usually need to be locked in place using clips to prevent movement. If the casters and TV stand move, professional re-adjustment is required, which is time-consuming, laborious, and results in a poor user experience. Utility Model Content

[0003] Therefore, it is necessary to overcome the shortcomings of existing technologies and provide a laser TV and an automatic screen entry device that can match the projected image with the screen to achieve automatic screen entry.

[0004] An automatic screen entry device is provided for installation outside a laser projection device, the automatic screen entry device comprising:

[0005] A camera, used to acquire images including the projected image from the laser projection device and the screen; and

[0006] The circuit board is electrically connected to the camera and is also electrically connected to the laser projection device, and is used to transmit the image to the laser projection device.

[0007] In one embodiment, the automatic screen entry device further includes:

[0008] The housing, the camera and the circuit board are both located inside the housing.

[0009] In one embodiment, the automatic screen entry device further includes:

[0010] A transmission line is provided, through which the circuit board is electrically connected to the laser projection device, and the transmission line extends outward through the housing.

[0011] In one embodiment, there are two cameras, and the two cameras are set at an angle to each other; one camera is used to acquire images of two top corners on one side of the projected image and two top corners on one side of the screen, and the other camera is used to acquire images of two top corners on the other side of the projected image and two top corners on the other side of the screen.

[0012] In one embodiment, the automatic screen entry device further includes:

[0013] The mounting bracket is disposed inside the housing, and both cameras are mounted on the mounting bracket.

[0014] In one embodiment, the mounting bracket has a recess, and two cameras are disposed in the recess; the two opposite sidewalls of the recess are arranged at an angle to each other, and the sidewalls are arranged at an angle to the bottom surface of the housing, and the two cameras are respectively mounted on the two sidewalls.

[0015] In one embodiment, the housing is provided with a light-transmitting plate, which is opposite to the camera.

[0016] In one embodiment, the housing includes:

[0017] A first split shell, wherein the mounting bracket is mounted on the first split shell; and

[0018] The second split shell is detachably connected to the first split shell. The circuit board is installed on the second split shell and is electrically connected to the camera via wires.

[0019] In one embodiment, the first split shell is provided with a first snap-fit ​​portion, and the second split shell is provided with a second snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion are snap-fitted together, and the first snap-fit ​​portion and the second snap-fit ​​portion are located inside the outer shell.

[0020] The second split shell is provided with a positioning post, and the circuit board is provided with a positioning hole, with the positioning post passing through the positioning hole;

[0021] The first split shell has a first notch on the side near the second split shell, and the second split shell has a second notch on the side near the first split shell. The first notch and the second notch are positioned to correspond to each other and enclose each other to form a threading hole.

[0022] A laser television includes a laser projection device, a screen, and an automatic screen entry device. The laser projection device projects a projected image onto the screen using an optical projection imaging method, and the screen displays the projected image. The automatic screen entry device is located outside the laser projection device and is used to acquire an image including the projected image and the screen, and transmit the image to the laser projection device. The laser projection device is used to calculate the offset between the projected image and the screen based on the image, and can correct the position of the projected image based on the offset to match the projected image with the screen.

[0023] The aforementioned laser TV and automatic screen entry device, because the circuit board is electrically connected to the laser projection equipment, allows the camera to acquire images including the projected image and the screen, and transmits these images to the laser projection equipment via the circuit board. Upon receiving the images, the laser projection equipment can automatically correct any mismatch between the projected image and the screen, thus achieving automatic screen entry without the need for manual adjustment, thereby improving product performance. Attached Figure Description

[0024] Figure 1 The working state of a laser TV according to an embodiment of this application Figure 1 .

[0025] Figure 2 The working state of a laser TV according to an embodiment of this application Figure 2 .

[0026] Figure 3 The working state of a laser TV according to an embodiment of this application Figure 3 .

[0027] Figure 4 This is a structural diagram of an automatic screen entry device connected to a laser projection device according to an embodiment of this application.

[0028] Figure 5 for Figure 4 Another structural diagram of the structure shown.

[0029] Figure 6 This is a structural view of an automatic screen entry device according to an embodiment of this application.

[0030] Figure 7 for Figure 6 Another view of the automatic screen entry device shown.

[0031] Figure 8 for Figure 6 The diagram shown is an exploded view of the automatic screen entry device.

[0032] 10. Laser projection equipment; 11. Top surface; 12. Projected image; 20. Screen; 30. Automatic screen entry device; 31. Camera; 32. Circuit board; 33. Housing; 3301. Bottom surface; 3302. Light-transmitting plate; 331. First split housing; 3311. First notch; 332. Second split housing; 3321. Second snap-fit ​​part; 3322. Positioning post; 3323. Second notch; 34. Transmission line; 35. Mounting bracket; 351. Recess; 3511. Side wall. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] As described in the background section, the inventor has discovered that the problem of time-consuming and laborious operation of adjusting the projection image and screen in existing laser TVs without automatic screen entry function is due to the fact that the laser projection device in a laser TV without automatic screen entry function cannot automatically obtain the position of the projection image and screen, and therefore cannot obtain the positional deviation of the projection image and screen and perform automatic correction and matching of the position of the projection image and screen.

[0035] For the reasons mentioned above, this application provides a laser TV and an automatic screen entry device, which enables the projected image to match the screen and achieve the automatic screen entry function.

[0036] A laser TV is a projection display device that uses a laser light source as the display light source and combines it with front projection display technology to create an image. It is equipped with a screen and can receive broadcast television programs or internet television programs. Please refer to [link / reference]. Figure 1 The laser TV includes a laser projection device 10 and a screen 20. The laser projection device 10 acquires content to be displayed, which includes, but is not limited to, broadcast television programs, internet television programs, personal information, work materials, or learning videos. The laser projection device 10 can project the content to be displayed, i.e., the projection image 12, onto the screen 20 using an optical projection imaging method, and display the projection image 12 on the screen 20.

[0037] It should be noted that the specific type, size, and resolution of laser TVs are not limited here. The performance and configuration of laser TVs can be flexibly adjusted according to actual needs.

[0038] It should be noted that, for ease of description and understanding, the terms "up," "down," "left," and "right" in this embodiment refer to the state when the laser TV is in normal use, facing the screen 20, with the vertical direction representing up and down and the horizontal direction representing left and right. For example... Figure 1 As shown.

[0039] The laser TV also includes an automatic screen entry device 30. The automatic screen entry device 30 is located outside the laser projection device 10. The automatic screen entry device 30 is used to acquire images including the projected image 12 and the screen 20, and transmit the images to the laser projection device 10.

[0040] It should be noted that the automatic screen entry device 30 and the laser projection device 10 can be connected to each other or not connected at all, as long as they can acquire images including the projected image 12 and the screen 20, and do not block the laser beam emitted by the laser projection device 10.

[0041] When the automatic screen entry device 30 is connected to the laser projection device 10, the automatic screen entry device 30 is preferably disposed on the top surface 11 of the laser projection device 10, such as... Figures 1 to 5 As shown in any one of the images. Specifically, the automatic screen entry device 30 can be located, for example, at any corner of the top surface 11 (such as...). Figure 4 and Figure 5 (as shown), in the middle or other various positions. This allows the angle at which the automatic screen entry device 30 acquires the image to be the same as the angle of the laser beam emitted by the laser projection device 10, or allows for a deviation within a preset range, thereby facilitating the acquisition of images including the screen 20 and the projected image 12.

[0042] Of course, the automatic screen entry device 30 is not limited to being installed on the top surface 11. It can also be installed on the side, front, or any position around the laser projection device 10. There are no limitations here. It can be flexibly adjusted and set according to actual needs.

[0043] In this embodiment, the laser projection device 10 is also used to calculate the offset between the projected image 12 and the screen 20 based on the image, and can correct the position of the projected image 12 based on the offset so that the projected image 12 matches the screen 20, thereby achieving automatic screen entry.

[0044] It should be noted that there are many specific implementation methods for the laser projection device 10 to calculate the offset between the projected image 12 and the screen 20 based on the image; any method that can be used to obtain the offset between the projected image 12 and the screen 20 is acceptable. For example, a first feature point of the projected image 12 and a second feature point of the screen 20 can be selected from the image, and the offset can be obtained based on the distance between the first feature point and the second feature point. When the projected image 12 and the screen 20 match, the first feature point and the second feature point coincide, and their offset is 0; when the projected image 12 and the screen 20 do not match, the first feature point and the second feature point have a distance between them, and their offset is greater than 0.

[0045] The first feature point serves as a reference point for the projected image 12, and can be any corner, multiple corners, or the center of the projected image 12. The second feature point serves as a reference point for the screen 20, and can be any corner, multiple corners, or the center of the screen 20.

[0046] In this embodiment, please refer to Figures 1 to 3 The first feature points include, for example, four points, which are the four corners of the projected image 12, and the four corners are B1, B2, B3 and B4 respectively. Similarly, the second feature points include, for example, four points, which are the four corners of the screen 20, and the four corners are A1, A2, A3 and A4 respectively.

[0047] Please see Figure 1 When the projected image 12 matches the screen 20, the top corner B1 coincides with the top corner A1, the top corner B2 coincides with the top corner A2, the top corner B3 coincides with the top corner A3, and the top corner B4 coincides with the top corner A4.

[0048] Please see Figure 2 When the projected image 12 does not match the screen 20, and the projected image 12 shifts to the left, the top corner B1 shifts to the left relative to the top corner A1, the top corner B2 shifts to the left relative to the top corner A2, the top corner B3 shifts to the left relative to the top corner A3, and the top corner B4 shifts to the left relative to the top corner A4.

[0049] Please see Figure 3 When the projected image 12 does not match the screen 20, and the projected image 12 shifts to the right, the top corner B1 shifts to the right relative to the top corner A1, the top corner B2 shifts to the right relative to the top corner A2, the top corner B3 shifts to the right relative to the top corner A3, and the top corner B4 shifts to the right relative to the top corner A4.

[0050] For example, please refer to Figures 6 to 8This application provides an automatic screen entry device 30, which is disposed outside a laser projection device 10. The automatic screen entry device 30 includes a camera 31 and a circuit board 32. The camera 31 is used to acquire images including the projected image 12 of the laser projection device 10 and the screen 20. The circuit board 32 is electrically connected to the camera 31, and is also used to be electrically connected to the laser projection device 10. The circuit board 32 is used to transmit images to the laser projection device 10.

[0051] The aforementioned laser TV and automatic screen entry device 30, because the circuit board 32 is electrically connected to the laser projection device 10, allows the camera 31 to acquire images including the projected image 12 and the screen 20, and transmit these images to the laser projection device 10 via the circuit board 32. Upon receiving the images including the projected image 12 and the screen 20, the laser projection device 10 can automatically correct any mismatch between the image and the screen 20, thus achieving automatic screen entry without the need for manual adjustment, thereby improving product performance.

[0052] It should be noted that, in this embodiment, the automatic screen entry device 30 is specifically installed on a laser projection device 10 that does not have an automatic screen entry function. The circuit board 32 is electrically connected to the laser projection device 10 and performs a software upgrade on the laser projection device 10 to enable automatic screen entry, thereby improving the user experience.

[0053] The automatic screen entry device 30 can be installed in many positions outside the laser projection device 10. As long as it does not block the laser beam emitted by the laser projection device 10, so that the projection image 12 can be completely projected onto the screen 20, and the light of the camera 31 is not blocked, so that a complete image can be obtained.

[0054] Furthermore, since the automatic screen entry device 30 can be placed in many locations outside the laser projection device 10, it is more flexible than integrating the camera device inside the laser projection device 10, and can be selected according to actual needs, which can reduce the cost of laser TV.

[0055] For example, the automatic screen entry device 30 also includes a housing 33. The camera 31 and the circuit board 32 are both disposed inside the housing 33. Thus, since the camera 31 and the circuit board 32 are both installed inside the housing 33, the housing 33 prevents the camera 31 and the circuit board 32 from being exposed, providing good protection, and the concealed design does not affect the appearance of the product.

[0056] The appearance of the outer casing 33 can be customized according to user needs, and can be consistent with the appearance style of the laser TV without affecting the overall appearance and viewing experience of the laser TV. For example, when the laser TV is rounded, the outer casing 33 is designed to be more rounded; when the laser TV is square, the outer casing 33 is designed to be correspondingly square.

[0057] It should be noted that the electrical connection between the circuit board 32 and the laser projection device 10 can be either wired or wireless. In this embodiment, a wired connection is used as an example, but this is not a limitation. Those skilled in the art can also use a wireless connection. When using a wired connection, compared to a wireless connection, not only can the signal transmitter be omitted, but the circuit board 32 can also be directly connected to the signal interface of the laser projection device 10 via a wired connection, thereby reducing costs.

[0058] For example, the automatic screen entry device 30 also includes a transmission line 34. The circuit board 32 is electrically connected to the laser projection device 10 via the transmission line 34, which extends outward through the housing 33.

[0059] Optionally, the transmission line 34 is equipped with a USB connector, which can be quickly electrically connected to the USB interface of the laser projection device 10 by plugging in, so as to realize the transmission of images to the laser projection device 10.

[0060] It should be noted that the number of cameras 31 can be one or more, or even two, three, four, or more; there is no limitation here. When the number of cameras 31 is greater, the offset can be obtained based on the images acquired by each camera 31, resulting in higher accuracy and improved automatic screen entry precision. When the number of cameras 31 is smaller, such as one, a wide-angle camera 31 can be used, which can still acquire images including the projected image 12 and the screen 20. However, the matching accuracy is lower, and the device cost is lower.

[0061] Please see Figures 6 to 8 For example, there are two cameras 31, and the two cameras 31 are set at an angle to each other. The two cameras 31 can be set in a cross direction or in a back-to-back direction. One camera 31 is used to capture images of two top corners on one side of the projected image 12 and two top corners on one side of the screen 20, and the other camera 31 is used to capture images of two top corners on the other side of the projected image 12 and two top corners on the other side of the screen 20.

[0062] It should be noted that the two cameras 31 can be arranged either horizontally or vertically. In this embodiment, as shown... Figure 6 and Figure 7 As shown, the example is two cameras 31 arranged in a left-right direction, but this is not a limitation.

[0063] When the camera directions of the two cameras 31 intersect, the camera 31 located on the left side aligns with the two right corners of the projected image 12 and the two right corners of the screen 20, thereby acquiring images of the two right corners of the projected image 12 and the two right corners of the screen 20. Similarly, the camera 31 located on the right side aligns with the two left corners of the projected image 12 and the two left corners of the screen 20, thereby acquiring images of the two left corners of the projected image 12 and the two left corners of the screen 20. Specifically, the two cameras 31 are respectively arranged on the left and right sides of the housing 33, and their camera directions intersect.

[0064] When the two cameras 31 are positioned with their camera directions facing away from each other, the camera 31 located on the left side is positioned opposite the two top left corners of the projected image 12 and the two top left corners of the screen 20, thereby acquiring images of the two top left corners of the projected image 12 and the two top left corners of the screen 20. Similarly, the camera 31 located on the right side is positioned opposite the two top right corners of the projected image 12 and the two top right corners of the screen 20, thereby acquiring images of the two top right corners of the projected image 12 and the two top right corners of the screen 20. Specifically, the two cameras 31 are respectively positioned on the left and right sides of the housing 33, with their camera directions tilted away from each other; or, the two cameras 31 are positioned back-to-back in the middle of the housing 33, with their camera directions tilted away from each other.

[0065] As can be seen, with the above arrangement, the two cameras 31 can acquire images of the four corners of the projected image 12 and the four corners of the screen 20, and then transmit the images to the laser projection device 10. The software algorithm analyzes the offset and automatically corrects the position of the projected image 12 based on the offset, ensuring the projected image is aligned within the screen 20. Furthermore, compared to using a single camera 31, using two cameras 31 provides a wider imaging area, more flexible installation, and better image quality.

[0066] Please see Figures 6 to 8 For example, the automatic screen entry device 30 also includes a mounting bracket 35. The mounting bracket 35 is disposed within the housing 33, and both cameras 31 are mounted on the mounting bracket 35. In this way, the mounting bracket 35 serves to support and carry the cameras 31, so that the cameras 31 are stably disposed within the housing 33; in addition, the shape and size of the mounting bracket 35 can be flexibly adjusted and designed to match the installation angle of the cameras 31, thereby realizing flexible adjustment of the camera's imaging direction.

[0067] Of course, the "mounting bracket 35" can be "part of the housing 33", that is, the "mounting bracket 35" and the "other parts of the housing 33" are integrally molded; or it can be a separate component that can be separated from the "other parts of the housing 33", that is, the "mounting bracket 35" can be manufactured independently and then combined with the "other parts of the housing 33" to form a whole.

[0068] For ease of manufacturing, the mounting bracket 35 and the housing 33 are specifically two separate structures, each manufactured and processed independently, and assembled together by means such as adhesive or snap-fit. As a specific example, the mounting bracket 35 and the housing 33 are fixedly assembled together by adhesive, and the camera 31 is fixedly assembled together with the mounting bracket 35 by adhesive.

[0069] Of course, the camera 31 is not limited to being fixed with glue; it can also be connected by means of snap-fit, riveting, or fasteners such as pins and screws, etc., and there is no limitation here.

[0070] Based on the aforementioned embodiment, the mounting bracket 35 is provided with a recess 351, and the two cameras 31 are disposed within the recess 351. Thus, the overall structure is more compact and occupies less space.

[0071] Furthermore, the two opposing sidewalls 3511 of the recess 351 are arranged at an angle to each other. The angle includes, but is not limited to, 30°, 45°, 60°, 75°, 90°, 120°, or 150°. Two cameras 31 are respectively mounted on the two sidewalls 3511. Thus, the camera directions of the two cameras 31 are arranged at an angle. By adjusting the angle between the two sidewalls 3511, the angle between the camera directions of the two cameras 31 can be adjusted accordingly. The camera 31 mounted on the left sidewall 3511 is opposite to the two right corners of the projection screen 12 and the two right corners of the screen 20, thereby acquiring images of the two right corners of the projection screen 12 and the two right corners of the screen 20. The camera 31 mounted on the right sidewall 3511 is opposite to the two left corners of the projection screen 12 and the two left corners of the screen 20, thereby acquiring images of the two left corners of the projection screen 12 and the two left corners of the screen 20.

[0072] Optionally, the side wall 3511 is set at an angle to the bottom surface 3301 of the housing 33. When the bottom surface 3301 of the housing 33 is connected to the top surface 11 of the laser projection device 10, the camera 31 mounted on the side wall 3511 is set at an angle to the top surface 11 of the laser projection device 10, so that the imaging direction of the camera 31 is consistent with the laser emission direction of the laser projection device 10 or the angle deviation value is within the allowable preset range, thereby improving the image acquisition effect.

[0073] For example, the housing 33 is provided with a light-transmitting plate 3302, which is opposite to the camera 31. In this way, the camera 31 can acquire images through the light-transmitting plate 3302. In addition, since there is a light-transmitting plate 3302, there is no need to provide openings in the housing 33, so that the housing 33 can be a completely sealed structure, which provides better protection for the camera 31.

[0074] Optionally, the light-transmitting panel 3302 may be, but is not limited to, a glass panel. The glass panel may be attached to the housing 33 by means of adhesive, snap-fit, or fasteners such as pins or screws.

[0075] For example, the light-transmitting plate 3302 is set at an angle to the bottom surface 3301 of the housing 33. Specifically, the angle between the light-transmitting plate 3302 and the bottom surface 3301 of the housing 33 includes, but is not limited to, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 36°, 37°, 40°, 45°, or 60°, etc. After connecting the bottom surface 3301 of the housing 33 to the top surface 11 of the laser projection device 10, the orientation of the light-transmitting plate 3302 and the camera 31 is consistent with the light emission direction of the lens of the laser projection device 10. This facilitates the acquisition of images including the projected image 12 and the screen 20, and improves the image acquisition effect.

[0076] For example, the housing 33 may be directly bonded to the laser projection device 10 or a TV cabinet using adhesive.

[0077] For example, the outer casing 33 includes a first split casing 331 and a second split casing 332. The first split casing 331 and the second split casing 332 are detachably connected. The mounting bracket 35 is mounted on the first split casing 331, and the light-transmitting plate 3302 is specifically disposed on the first split casing 331, for example. The circuit board 32 is mounted on the second split casing 332, and the circuit board 32 is electrically connected to the camera 31 via wires. Thus, when assembling the automatic screen entry device 30, the camera 31 can be first mounted on the mounting bracket 35, for example, by dispensing adhesive, and then the mounting bracket 35 can be mounted on the first split casing 331 by dispensing adhesive; the circuit board 32 is mounted on the second split casing 332, and the circuit board 32 is electrically connected to the camera 31 via wires; finally, the first split casing 331 and the second split casing 332 are connected to each other.

[0078] It should be noted that there are many ways to detach the first split shell 331 and the second split shell 332, including but not limited to using snap-fit ​​or fasteners such as pins, rivets, screws or bolts for connection and fixation. The specific method can be flexibly adjusted and set according to actual needs.

[0079] In this embodiment, the first split shell 331 and the second split shell 332 are snap-fitted together. In this way, the first split shell 331 and the second split shell 332 can be quickly assembled together; at the same time, there is no need to use fasteners such as screws for connection, which can make the device smaller in size.

[0080] Please see Figures 6 to 8 In one embodiment, the first split shell 331 is provided with a first snap-fit ​​portion, and the second split shell 332 is provided with a second snap-fit ​​portion 3321. The first snap-fit ​​portion and the second snap-fit ​​portion 3321 are snap-fitted together and are located inside the outer shell 33.

[0081] Specifically, there are at least two first latching parts and at least two second latching parts 3321, with each first latching part and each second latching part 3321 correspondingly latching and engaging.

[0082] Optionally, the first snap-fit ​​portion may include, but is not limited to, a snap hole or a buckle, and the second snap-fit ​​portion 3321 may include, but is not limited to, a hook or a snap hole.

[0083] For example, the second split shell 332 is provided with a positioning post 3322, and the circuit board 32 is provided with a positioning hole, with the positioning post 3322 passing through the positioning hole.

[0084] Furthermore, the circuit board 32 is also secured to the second split housing 332 by fasteners such as screws, pins, rivets, or bolts. In this way, the circuit board 32 is securely mounted on the second split housing 332.

[0085] For example, the first split shell 331 has a first notch 3311 on the side near the second split shell 332, and the second split shell 332 has a second notch 3323 on the side near the first split shell 331. The first notch 3311 and the second notch 3323 are positioned correspondingly and enclose each other to form a wire hole. In this way, the transmission line 34 can pass through the wire hole formed by the first notch 3311 and the second notch 3323 to exit the outer shell 33. This allows the transmission line 34 to pass through the wire hole when the first split shell 331 and the second split shell 332 are assembled, making the wire threading operation simple.

[0086] As an alternative, the first split shell 331 and the second split shell 332 are an integrated structure. In other words, the first split shell 331 and the second split shell 332 cannot be disassembled. In order to install components such as the circuit board 32, camera 31, and mounting bracket 35 inside the outer shell 33, the size of the opening on the outer shell 33 corresponding to the light-transmitting plate 3302 can be increased accordingly, so that components such as the circuit board 32, camera 31, and mounting bracket 35 can be installed inside the outer shell 33.

[0087] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0088] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0089] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0090] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An automatic screen entry device, characterized in that, For installation outside a laser projection device, the automatic screen entry device includes: A camera, used to acquire images including the projected image from the laser projection device and the screen; and The circuit board is electrically connected to the camera and is also electrically connected to the laser projection device, and is used to transmit the image to the laser projection device.

2. The automatic screen entry device according to claim 1, characterized in that, The automatic screen entry device also includes: The housing, the camera and the circuit board are both located inside the housing.

3. The automatic screen entry device according to claim 2, characterized in that, The automatic screen entry device also includes: A transmission line is provided, through which the circuit board is electrically connected to the laser projection device, and the transmission line extends outward through the housing.

4. The automatic screen entry device according to claim 2, characterized in that, There are two cameras, and the two cameras are set at an angle to each other; one camera is used to acquire images of two top corners on one side of the projected image and two top corners on one side of the screen, and the other camera is used to acquire images of two top corners on the other side of the projected image and two top corners on the other side of the screen.

5. The automatic screen entry device according to claim 4, characterized in that, The automatic screen entry device also includes: The mounting bracket is disposed inside the housing, and both cameras are mounted on the mounting bracket.

6. The automatic screen entry device according to claim 5, characterized in that, The mounting bracket has a recess, and the two cameras are disposed in the recess; the two opposite sidewalls of the recess are arranged at an angle to each other, and the sidewalls are arranged at an angle to the bottom surface of the housing, and the two cameras are respectively mounted on the two sidewalls.

7. The automatic screen entry device according to any one of claims 2 to 5, characterized in that, The outer casing is provided with a light-transmitting plate, which is opposite to the camera.

8. The automatic screen entry device according to claim 5, characterized in that, The outer casing includes: A first split shell, wherein the mounting bracket is mounted on the first split shell; and The second split shell is detachably connected to the first split shell. The circuit board is installed on the second split shell and is electrically connected to the camera via wires.

9. The automatic screen entry device according to claim 8, characterized in that, The first split shell is provided with a first snap-fit ​​portion, and the second split shell is provided with a second snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion are snap-fitted together and are located inside the shell. The second split shell is provided with a positioning post, and the circuit board is provided with a positioning hole, with the positioning post passing through the positioning hole; The first split shell has a first notch on the side near the second split shell, and the second split shell has a second notch on the side near the first split shell. The first notch and the second notch are positioned to correspond to each other and surround each other to form a threading hole.

10. A laser television, characterized in that, The device includes a laser projection device, a screen, and an automatic screen entry device as described in any one of claims 1 to 9. The laser projection device projects a projected image onto the screen using an optical projection imaging method, and the screen displays the projected image. The automatic screen entry device is located outside the laser projection device and is used to acquire an image including the projected image and the screen, and transmit the image to the laser projection device. The laser projection device is used to calculate the offset between the projected image and the screen based on the image, and can correct the position of the projected image based on the offset to match the projected image with the screen.

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