Image distortion correction method for projector and projector

Abstract

The present invention relates to the technical field of projection equipment, and in particular to a method for correcting image distortion of a projector, comprising the following steps: obtaining actual angle parameters of an electronic level on an optical module based on a controller; comparing the actual angle parameters of the optical module with theoretical angle parameters of the optical module based on the controller to obtain an adjustment angle of the optical module; based on the adjustment angle, starting a driving mechanism by the controller to adapt the angle of the optical module to the adjustment angle; after the angle of the optical module is adapted to the adjustment angle, eliminating image distortion and completing distortion calibration. The method reduces the setting of components, thereby reducing the steps of distortion processing and greatly reducing the complexity of adjustment. After the initial adjustment is completed, the controller can also continuously monitor the status of the optical module based on the parameters fed back by the electronic level, so as to adjust its angle at any time, thereby avoiding image distortion when the projector is in use.

Description

Technical Field

[0001] The present invention relates to the technical field of projection equipment, and in particular to an image distortion correction method for a projector and the projector. Background Art

[0002] A projector is a device that converts an electronic image signal into a visible image on a large screen. It is commonly used in education, business presentations, home theaters, and other applications that require a large screen display. A projector displays images by shining light on a transmissive or reflective surface. Common projection methods include: Transmissive projection: In this method, the image is generated on a transparent film or other medium, and light passes through this image and is projected onto the screen in a magnified form. Reflective projection: Modern digital projectors typically use reflective technology, in which the image is generated by a small digital display panel and projected onto the screen through a lens system. The basic cause of distortion in a projector is that its projection element cannot be perpendicular to the screen, resulting in an unclear image.

[0003] However, the existing technology still has shortcomings. For example, patent number: CN200680026814.6 is an arrangement structure for correcting the distortion of an image projected on a projection surface, comprising: a) a laser for emitting a laser beam; b) a scanner, which comprises: a first scanning mirror for scanning the laser beam along a first scanning direction to form a scanning line on the projection surface; and a second scanning mirror for scanning the scanning line along a second scanning direction approximately perpendicular to the first scanning direction to form a grating pattern of scanning lines on the projection surface. Since the laser beam travels a different distance between the second scanning mirror and the projection surface, the scanning lines have different lengths in the first scanning direction, and each scanning line has multiple pixels in the first scanning direction. However, the adjustment method of this method is complicated and its practicality is extremely low. Summary of the Invention

[0004] The present invention provides an image distortion correction method for a projector and a projector, which are used to solve the problem raised in the background technology.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: A method for correcting image distortion of a projector, comprising: A method for correcting image distortion of a projector, comprising the following steps:

[0006] Acquire actual angle parameters of the electronic level on the optical module based on the controller;

[0007] Based on the comparison between the actual angle parameters of the optical module and the theoretical angle parameters of the optical module by the controller, the adjustment angle of the optical module is obtained;

[0008] Based on the adjustment angle, a controller is used to activate a driving mechanism so that the angle of the optical module is adapted to the adjustment angle;

[0009] After the angle of the optical module is adapted to the adjustment angle, the image distortion is eliminated and the distortion calibration is completed.

[0010] Preferably, when the controller is used to start the driving mechanism to adapt the angle of the optical module to the adjustment angle, the controller controls the output end of the motor to drive the rocker arm to rotate, and then the horizontal angle of the optical module is adapted to the horizontal adjustment angle through the lifting adjustment seat, and then the controller controls the second output end of the motor to drive the connecting rod to rotate, and then the vertical angle of the optical module is adapted to the vertical adjustment angle.

[0011] Preferably, after eliminating the image distortion, the angle parameters of the optical module may continue to be recorded by the electronic level to keep the optical module in a normal working state.

[0012] Preferably, the distortion calibration includes multiple times, including: based on the real-time acquisition of the actual angle parameters of the electronic level by the controller, the controller judges the actual angle parameters acquired in real time, and when there is distortion, performs an angle and adjustment angle adaptation; when the adaptation is completed, the actual angle parameters of the electronic level are again acquired in real time by the controller, thereby completing multiple distortion calibrations.

[0013] Preferably, a projector is suitable for the image distortion correction method of a projector described in any one of the above items, comprising: a housing, an optical module, an electronic level, a controller and a driving mechanism, the housing is connected to the optical module, the optical module is connected to the output end of the driving mechanism in the housing, the driving mechanism is electrically connected to the controller, the controller is electrically connected to the electronic level, the controller is installed in the housing, and the electronic level is installed on the optical module.

[0014] Preferably, the driving mechanism includes: a motor, a rocker arm, a slider, a lifting and adjusting seat, a connecting rod and a second connecting rod. The motor is installed in the shell, the output end of the motor is connected to the end of the rocker arm, the other end of the rocker arm is hinged to the bottom of the lifting and adjusting seat, a plurality of sliders are installed at the bottom of the lifting and adjusting seat, the sliders are interactively connected with the arc-shaped slide rail in the shell, the center of the arc-shaped slide rail is located below the motor, the output end of the second motor on the lifting and adjusting seat is connected to the bottom end of the connecting rod, the top end of the connecting rod is hinged to the top end of the second connecting rod, and the top end of the second connecting rod is hinged to the optical module.

[0015] Preferably, a filter is provided on the side wall of the housing away from the optical module, a cooling fan mechanism is installed in the housing, the output end of the cooling fan mechanism is arranged toward the filter, and two sealing plates are slidably connected to the side wall of the housing to seal the filter.

[0016] Preferably, the sealing plate is connected to the end of the adjustment mechanism, the adjustment mechanism is installed in the shell, the other end of the adjustment mechanism is connected to the filter screen 2, the side wall of the shell is equipped with the filter screen 3, and the inner wall of the shell is slidably connected to the filter screen 2 to seal the filter screen 3.

[0017] Preferably, the regulating mechanism includes: a heat absorbing tube, a heat absorbing tube is installed on each of the two inner walls of the shell, a piston is slidingly sealed in the heat absorbing tube, a guide rod is inserted on the piston, the guide rod is slidingly sealed with the circular hole and the second circular hole on the heat absorbing tube, one end of the guide rod is connected to the sealing plate through a conductive spring, the conductive spring is slidingly connected in the guide tube, the guide tube is inserted on the inner wall of the shell, the other end of the guide rod is connected to the second filter, nitrogen is injected between one side of the piston and the inner wall of the heat absorbing tube, the other side of the piston is connected to the other inner wall of the heat absorbing tube through a spring, and the spring is arranged close to the second filter.

[0018] Preferably, it also includes: a dust shield plate, a mounting ring is installed in the mounting hole of the shell, the annular groove on the inner wall of the mounting ring is rotatably connected to the optical module, a dust shield motor is installed in the shell, and the end of the dust shield motor passing through the outside of the shell is connected to a gear, the gear is meshed with gear 2, gear 2 is rotatably connected to the shell, and a dust shield plate is connected to the bottom of the gear and gear 2 to protect the output end of the optical module.

[0019] The beneficial effects of the present invention are as follows:

[0020] In the solution of the present invention:

[0021] This method reduces the setting of components, thereby reducing the steps of distortion processing, greatly reducing the complexity of adjustment. After completing the initial adjustment, the controller can also continuously monitor the status of the optical module based on the parameters feedback from the electronic level, so as to adjust its angle at any time, thereby avoiding image distortion when the projector is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a flow chart of the present invention;

[0023] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 3 Schematic diagram of the connection relationship between the optical module, the connecting rod and the connecting rod 2 of the present invention;

[0025] Figure 4 It is a cross-sectional view of the main body of the present invention;

[0026] Figure 5 This is a schematic diagram of the connection between the sealing plate and the conductive spring of the present invention;

[0027] Figure 6 is a cross-sectional view of the heat absorption tube of the present invention;

[0028] Figure 7 Schematic diagram of the relative position relationship between the optical module and the dust shield of the present invention;

[0029] Figure 8 A cross-sectional view of a U-shaped tube according to the present invention;

[0030] Figure 9 This is a schematic diagram of the connection between the ash discharge pipe and the discharge pipe of the present invention;

[0031] Figure 10 This is a schematic diagram of the connection relationship between the telescopic pipe and the spring 2 of the present invention;

[0032] Figure 11 This is a schematic diagram of the connection between the spring three and the lifting column of the present invention;

[0033] Figure 12 Schematic diagram of the friction fit between the tapered rubber wheel and the spline shaft of the present invention;

[0034] Figure 13 Schematic diagram of the installation position of the bump of the present invention.

[0035] Among them: housing 1, optical module 2, dust shield 3, motor 4, rocker arm 5, slider 6, lifting adjustment seat 7, connecting rod 8, connecting rod 2 9, cooling fan mechanism 10, filter 11, adjustment mechanism 12, filter 2 13, sealing plate 14, heat absorption tube 15, piston 16, guide rod 17, conduction spring 18, spring 19, gear 20, pipeline 21, U-shaped tube 22, pump casing 23, blade 24, ash discharge mechanism 25, ash discharge pipe 26, discharge pipe 27, discharge column 28, push rod 29, telescopic pipe 30, spring 2 31, bump 32, power motor 33, tapered rubber wheel 34, spline shaft 35, push rod 2 36, lifting tube 37, spring 3 38, lifting column 39, round filter 40, round hole 3 41. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] Example 1: Reference Figures 1-13 , a method for correcting image distortion of a projector, comprising the following steps:

[0038] Acquire actual angle parameters of the electronic level on the optical module 2 based on the controller;

[0039] The controller compares the actual angle parameter of the optical module 2 with the theoretical angle parameter of the optical module 2 to obtain the adjustment angle of the optical module 2;

[0040] Based on the adjustment angle, the controller is used to activate the driving mechanism so that the angle of the optical module 2 is adapted to the adjustment angle;

[0041] After the angle of the optical module 2 is adapted to the adjustment angle, the image distortion is eliminated, and the distortion calibration is completed.

[0042] The principles and beneficial effects of the above scheme are:

[0043] The specific model of the electronic level is: SCT726T. The electronic level can transmit the actual angle parameters of the optical module 2 to the controller. The controller compares the actual angle parameters of the optical module 2 with the theoretical angle parameters of the optical module 2 to obtain the adjustment angle of the optical module 2, greatly increasing the accuracy of the adjustment angle acquisition. Subsequently, based on the adjustment angle, the controller activates the driving mechanism to make the angle of the optical module 2 equal to the adjustment angle, thereby eliminating image distortion. This method reduces the configuration of components, thereby reducing the steps of distortion processing, and greatly reducing the complexity of adjustment. After the initial adjustment is completed, the controller can also continuously monitor the status of the optical module 2 based on the parameters fed back by the electronic level to facilitate adjusting its angle at any time, thereby avoiding image distortion when the projector is in use. In the process of eliminating image distortion, the configuration of components in the device is reduced, and the configuration of the control program is reduced, which greatly reduces the power consumed by the device during operation, thereby reducing the use of electrical energy. It can be further seen that the reduction in electrical energy use reduces the problem of heating of components in the device, thereby avoiding secondary distortion of the optical module 2 after being heated, and avoiding the occurrence of malfunction of the device during use.

[0044] Example 2: Reference Figures 1-13 When the controller is used to start the driving mechanism to adapt the angle of the optical module 2 to the adjustment angle, the controller controls the output end of the motor 4 to drive the rocker arm 5 to rotate, and then the horizontal angle of the optical module 2 is adapted to the horizontal adjustment angle through the lifting adjustment seat 7. Then, the controller controls the second output end of the motor to drive the connecting rod 8 to rotate, and then the vertical angle of the optical module 2 is adapted to the vertical adjustment angle.

[0045] The principles and beneficial effects of the above scheme are:

[0046] When adapting the angle of the optical module 2 to the adjustment angle, the controller first drives the lifting adjustment seat 7 to move through the motor 4, thereby completing the adaptation of the horizontal angle of the optical module 2 to the horizontal adjustment angle, and then drives the vertical angle of the optical module 2 to adapt to the vertical adjustment angle through the motor 2. Adjusting the angle of the optical module 2 twice greatly improves the accuracy of the angle adjustment and improves the efficiency of distortion correction.

[0047] Example 3: Reference Figures 1-13After eliminating the image distortion, the angle parameters of the optical module 2 can continue to be recorded by the electronic level to keep the optical module 2 in a normal working state.

[0048] The principles and beneficial effects of the above scheme are:

[0049] After eliminating the image distortion, the angle parameters of the optical module 2 can continue to be recorded by the electronic level, thereby keeping the optical module 2 in a normal working state, further improving the practicability of the method.

[0050] Example 4: Reference Figures 1-13 The distortion calibration includes multiple times, including: based on the controller, the actual angle parameters of the electronic level are acquired in real time, the controller judges the actual angle parameters acquired in real time, and when there is distortion, an angle and adjustment angle adaptation is performed; when the adaptation is completed, the actual angle parameters of the electronic level are acquired in real time by the controller again, thereby completing multiple distortion calibrations.

[0051] The principles and beneficial effects of the above scheme are:

[0052] The controller can obtain the actual angle of the electronic level in real time, thereby realizing the device's angle monitoring. The device can adjust the angle of the optical module 2 at any time according to actual conditions, which greatly improves the practicality of the device and its adaptability to different working conditions.

[0053] Example 5: Reference Figures 1-13 A projector, suitable for the image distortion correction method of a projector described in any of the above items, includes: a housing 1, an optical module 2, an electronic level, a controller and a driving mechanism, the housing 1 is connected to the optical module 2, the optical module 2 is connected to the output end of the driving mechanism in the housing 1, the driving mechanism is electrically connected to the controller, the controller is electrically connected to the electronic level, the controller is installed in the housing 1, and the electronic level is installed on the optical module 2.

[0054] The principles and beneficial effects of the above scheme are:

[0055] The housing 1 provides installation space for the optical module 2, the controller and the driving mechanism. Since the electronic level is installed on the optical module 2, it not only improves the accuracy of parameter acquisition, but also improves the ability to monitor the status of the optical module 2. The controller is electrically connected to the electronic level and the driving mechanism. The driving mechanism adjusts the angle of the optical module 2, which greatly reduces the difficulty of angle adjustment. At the same time, through the arrangement of the above-mentioned components, the difficulty of eliminating image distortion is greatly reduced. In terms of actual production, it is extremely beneficial to reduce the difficulty of manufacturing the device. In addition, the manufacturing cost is low, which greatly improves the practicality of the device.

[0056] Example 6: Reference Figures 1-13 The driving mechanism includes: a motor 4, a rocker arm 5, a slider 6, a lifting and adjusting seat 7, a connecting rod 8 and a second connecting rod 9. The motor 4 is installed in the housing 1, and the output end of the motor 4 is connected to the end of the rocker arm 5. The other end of the rocker arm 5 is hinged to the bottom of the lifting and adjusting seat 7. A plurality of sliders 6 are installed at the bottom of the lifting and adjusting seat 7. The sliders 6 are interactively connected with the arc-shaped slide rail in the housing 1. The center of the arc-shaped slide rail is located below the motor 4. The output end of the second motor on the lifting and adjusting seat 7 is connected to the bottom end of the connecting rod 8. The top of the connecting rod 8 is hinged to the top of the second connecting rod 9, and the top of the second connecting rod 9 is hinged to the optical module 2.

[0057] The principles and beneficial effects of the above scheme are:

[0058] When adjusting the angle, the motor 4 starts to drive the rocker arm 5 to rotate, and with the cooperation of the arc-shaped slide rail and the slider 6, it drives the movement of the lifting adjustment seat 7 to complete the adjustment of the horizontal angle of the optical module 2. Then the second motor starts to drive the connecting rod 8 to rotate, and the connecting rod 8 drives the second connecting rod 9 to move to complete the adjustment of the longitudinal angle of the optical module 2. This not only simplifies the complexity of the mechanism, but also greatly reduces the space occupied by the internal device. It has the characteristics of high efficiency and excellent practicality for image distortion processing.

[0059] Example 7: Reference Figures 1-13 A filter 11 is provided on the side wall of the housing 1 away from the optical module 2, and a cooling fan mechanism 10 is installed in the housing 1. The output end of the cooling fan mechanism 10 is set toward the filter 11. Two sealing plates 14 are slidably connected to the side wall of the housing 1 to seal the filter 11.

[0060] The principles and beneficial effects of the above scheme are:

[0061] The setting of the filter 11 can provide a heat dissipation structure for the components inside the shell 1, while also reducing the chance of external dust entering the device and avoiding damage to the internal components. The cooling fan mechanism 10 can assist the circulation of internal and external air, further increasing the efficiency of temperature reduction; the sealing plate 14 slidably connected to the shell 1 can protect the filter 11 and prevent dust accumulation on the filter 11 when the device is not working.

[0062] Example 8: Reference Figures 1-13 The sealing plate 14 is connected to the end of the adjusting mechanism 12, the adjusting mechanism 12 is installed in the shell 1, the other end of the adjusting mechanism 12 is connected to the filter screen 2 13, the side wall of the shell 1 is equipped with the filter screen 3, and the inner wall of the shell 1 is slidably connected with the filter screen 2 13 to seal the filter screen 3.

[0063] The principles and beneficial effects of the above scheme are:

[0064] The sealing plate 14 seals or releases the seal of the filter 11 through the adjustment mechanism 12. In addition, the adjustment mechanism 12 can drive the filter 2 13 to move. When the device starts working, the adjustment mechanism 12 releases the seal of the filter 2 13 on the filter 3. At this time, the cooling fan mechanism 10 works, and the air outside the device enters the device through the filter 11, cools the internal parts, and is discharged after passing through the filter 2 13 and the filter 3, completing the cooling process.

[0065] Example 9: Reference Figures 1-13 The regulating mechanism 12 includes: a heat absorbing tube 15, a heat absorbing tube 15 is installed on each of the two inner walls of the shell 1, a piston 16 is slidingly sealed in the heat absorbing tube 15, a guide rod 17 is inserted on the piston 16, the guide rod 17 and the circular hole and the circular hole 2 on the heat absorbing tube 15 are slidingly sealed, one end of the guide rod 17 is connected to the sealing plate 14 through a conductive spring 18, the conductive spring 18 is slidingly connected in the guide tube, the guide tube is inserted on the inner wall of the shell 1, the other end of the guide rod 17 is connected to the second filter 13, nitrogen is injected between one side of the piston 16 and the inner wall of the heat absorbing tube 15, the other side of the piston 16 is connected to the other inner wall of the heat absorbing tube 15 through a spring 19, and the spring 19 is arranged close to the second filter 13.

[0066] The principles and beneficial effects of the above scheme are:

[0067] The power for opening the sealing plate 14 and the second filter 13 comes from the nitrogen in the heat absorption tube 15. Since the temperature is low when the device starts working, the temperature gradually rises as the working time increases. At this time, the nitrogen begins to absorb heat and pushes the piston 16 to move toward the optical module 2. The spring 19 is compressed, and the guide rod 17 on the piston 16 moves synchronously. One end of the guide rod 17 drives the second filter 13 to move to release the seal on the third filter. The other end of the guide rod 17 drives the conductive spring 18 to move, and the guide tube provides convenience for its movement. Since the conductive spring 18 is specifically a spiral structure, when one end of it starts to move, the other end connected to the sealing plate 14 is in a stationary state. The sealing plate 14 does not start to move until the conductive spring 18 is stretched to a certain length. The advantage of this setting is that it can increase the initial velocity of the sealing plate 14. After the initial velocity is instantly accelerated, the surrounding airflow intensity increases, and some dust or impurities remaining on the filter 11 can be taken away, thereby cleaning the filter 11. Based on this solution, it can be seen that the device reduces the setting of the cleaning mechanism and increases the cleaning effect of the filter 11. When the conductive spring 18 is stretched, its structure can play a buffering role, thereby slowing down the movement of the sealing plate 14 to prevent it from excessively hitting the guide tube. Further, based on the structure of the conductive spring 18 and common sense, it can be seen that after the guide rod 17 moves in the opposite direction, the two sealing plates 14 can be quickly closed to seal the filter 11 in time. When the device is used in a dusty environment, it can effectively prevent dust from hanging on the filter 11.

[0068] Example 10: Reference Figures 1-13 , also includes: a dust shield plate 3, a mounting ring is installed in the mounting hole of the shell 1, the annular groove on the inner wall of the mounting ring is rotatably connected to the optical module 2, a dust shield motor is installed in the shell 1, and the end of the dust shield motor passing through the outside of the shell 1 is connected to a gear 20, the gear 20 is meshed with the gear 2, the gear 2 is rotatably connected to the shell 1, and a dust shield plate 3 is connected to the bottom of the gear 20 and the gear 2 to protect the output end of the optical module 2.

[0069] The principles and beneficial effects of the above scheme are:

[0070] The setting of the dust shield 3 can not only prevent the accumulation of dust on the surface of the high-precision optical module 2, but also provide effective physical protection for it when the device is not in use to prevent it from being scratched. When the two dust shields 3 need to be opened, the dust shield motor is started, and its output end drives the gear 20 to rotate forward, and the gear 2 meshing with it rotates forward, and the gear 20 and the gear 2 each drive a dust shield 3 away from each other; when the dust shield 3 is closed, the dust shield motor is started again, and its output end drives the gear 20 to rotate forward, and the gear 2 meshing with it rotates backward, and the gear 20 and the gear 2 each drive a dust shield 3 closer to each other, which greatly reduces the complexity of the structure. As far as the production and manufacturing of the device is concerned, the optimized structure of this scheme greatly reduces the cost and difficulty of production and manufacturing; the meshing connection between the gear 20 and the gear 2 increases the synchronization of the two dust shields 3 during movement.

[0071] Example 11: Reference Figures 1-13 , one of the dust shield plates 3 is equipped with a pipe 21, and the other dust shield plate 3 is equipped with a second pipe. The end of the pipe 21 is connected to the end of the U-shaped tube 22, and the U-shaped tube 22 is installed in the outer shell 1. A pump casing 23 is installed on the U-shaped tube 22. A plurality of blades 24 are installed on the rotating shaft in the pump casing 23. The bottom end of the rotating shaft passes through the bottom of the pump casing 23 and is connected to the power mechanism. The other end of the U-shaped tube 22 is connected to the end of the ash discharge mechanism 25. The other end of the ash discharge mechanism 25 is connected to the second end of the pipe, and the ash discharge mechanism 25 is connected to the outer shell 1. The other ends of the pipe 21 and the pipe 2 are both set toward the optical module 2.

[0072] The principles and beneficial effects of the above scheme are:

[0073] After use, the optical module 2 itself has an extremely high surface temperature due to long-term work. Long-term and high-frequency use greatly reduces the structural integrity and service life of the optical module 2. Therefore, when the two dust shields 3 are closed, the power mechanism drives the shaft to rotate, and then the blades 24 in the pump housing 23 rotate. Since one end of the U-shaped tube 22 is connected to the end of the pipe 21, the other end of the U-shaped tube 22 is connected to the pipe 2 through the dust discharge mechanism 25. The other ends of the pipe 21 and the pipe 2 are both arranged toward the optical module 2. It can be seen that after closing the dust shield 3, the above-mentioned mechanism and the output end of the optical module 2 form an internal airtight space isolated from the external environment. At this time, the rotating blades 24 cause the air in the internal space to flow. At the same time, the working cooling fan mechanism 10 continuously guides the external air into the interior of the shell 1. Therefore, the U-shaped tube 22 also located in the shell 1 can guide the flowing air to the interior of the shell 1 for heat dissipation. The pipe 21 on the synchronous dust shield 3 can also dissipate heat for the flowing air, which not only increases the heat dissipation effect, but also avoids a sudden drop in temperature at the output end of the optical module 2, avoids permanent structural deformation of the internal components, and further avoids slight deformation after the structural deformation occurs that cannot be detected by using calibration equipment, and completely avoids the generation of image distortion.

[0074] Example 12: Reference Figures 1-13 The ash discharge mechanism 25 includes: an ash discharge pipe 26, the top of the ash discharge pipe 26 is connected to the bottom of the U-shaped tube 22, the bottom end of the ash discharge pipe 26 is connected to the ash discharge hole, the ash discharge hole is opened on the bottom wall of the shell 1, the ash discharge pipe 26 is connected to a discharge pipe 27, a discharge column 28 is slidably sealed in the discharge pipe 27, the discharge column 28 is penetrated by the discharge hole, the discharge hole and the ash discharge pipe 26 axis are staggered, the discharge hole is arranged close to the optical module 2, the end of the discharge column 28 is connected to the end of the push rod 29, the end of the push rod 29 outside the discharge pipe 27 is connected to the end of the telescopic pipe 30, the telescopic pipe 30 is connected to the end of the spring 2 31 through the mounting ring, the other end of the spring 2 31 is connected to the other end of the U-shaped tube 22, the telescopic pipe 30 is respectively slidably connected to the guide holes in the inner wall of the U-shaped tube 22 and the side wall of the shell 1, the end of the telescopic pipe 30 is slidably connected to the other end of the U-shaped tube 22, and the other end of the telescopic pipe 30 is conductively matched with the pipe 2;

[0075] The other dust shield 3 is provided with a protrusion 32, which is arranged on the lower side of the second pipe and is arranged toward the other end of the telescopic pipe 30;

[0076] A round filter screen 40 is installed at the end of the telescopic pipe 30 , and a round hole 3 41 is provided at the lower portion of the telescopic pipe 30 . The round hole 3 41 is arranged between the ash discharge pipe 26 and the other end of the U-shaped pipe 22 .

[0077] The principles and beneficial effects of the above scheme are:

[0078] While the circulating air in the U-shaped tube 22 cools down the optical module 2, the dust on the optical module 2 will enter the telescopic pipe 30, and can be collected by the circular filter 40 at this time. The excess dust will fall into the telescopic pipe 30 or enter the U-shaped tube 22 through the circular hole 3 41. After the dust shield 3 releases the protection for the optical module 2, a dust shield 3 drives the protrusion 32 to move and squeezes the telescopic pipe 30. The spring 2 31 is compressed, and the unloading column 28 and the telescopic pipe 30 move synchronously, thereby connecting the circular hole 3 41, the ash discharge pipe 26 and the unloading hole to discharge the dust, thereby improving the device's ability to handle dust independently; the dust shield 3 After closing, the protrusion 32 stops squeezing the telescopic pipe 30, and the telescopic pipe 30 is reset and connected to the second pipe under the action of the restoring elastic force of the second spring 31, preparing for the next work; at the same time, the reset of the telescopic pipe 30 can vibrate the circular filter 40. In this state, the dust remaining on the circular filter 40 can be thoroughly cleaned to avoid clogging of the circular filter 40 and to prevent the influence of the air pressure drop after the mechanism starts working. The telescopic pipe 30 is sucked into the U-shaped tube 22 to prevent the telescopic pipe 30 from losing contact with the second pipe when the mechanism performs the cleaning operation after the device ends work, and the optical module 2 is exposed to the external environment and contaminated.

[0079] Example 13: Reference Figures 1-13 The power mechanism includes: a power motor 33, a power motor 33 is installed in the shell 1, and the output end of the power motor 33 is connected to a conical rubber wheel 34, the top diameter of the conical rubber wheel 34 is smaller than its bottom diameter, the side wall of the conical rubber wheel 34 is frictionally matched with the bottom of the spline shaft 35, the top of the spline shaft 35 is plugged into the spline section at the bottom end of the rotating shaft, the spline shaft 35 is rotatably connected to the end of the push rod 2 36, the push rod 2 36 is slidably connected to the longitudinal slide, the longitudinal slide is opened on the side wall of the lifting tube 37, the bottom wall of the lifting tube 37 is connected to the bottom of the lifting column 39 through the spring 38, the lifting column 39 is slidably connected to the lifting tube 37, the top of the lifting tube 37 is connected to the bottom of the U-shaped tube 22, and the spherical top of the lifting column 39 is placed in the U-shaped tube 22 to seal the U-shaped tube 22.

[0080] The principles and beneficial effects of the above scheme are:

[0081] On the basis that the circular filter 40 is thoroughly cleaned, the specific direction of the air flow in the U-shaped tube 22 is as follows: the air in the second pipe enters the telescopic pipe 30, the other end of the U-shaped pipe 22, the pump housing 23, and the end of the U-shaped pipe 22 in sequence, and finally cleans and cools the optical module 2 through the pipe 21. Since external debris may enter the U-shaped pipe 22 when the dust in the telescopic pipe 30 is cleaned or after the dust is cleaned, in order to prevent the debris from damaging the optical module 2, after the power motor 33 is started, the friction between the conical rubber wheel 34 and the bottom of the spline shaft 35 drives the rotating shaft and the blade 24 to rotate, and the air pressure exerted by the flowing air on the spherical top of the lifting column 39 gradually increases, causing its height in the lifting tube 37 to gradually decrease, the spring three 38 is compressed, and the descent of the lifting column 39 drives the push rod The second 36 and the spline shaft 35 rotatably connected thereto descend. The descent of the spline shaft 35 increases the friction area between its bottom and the side wall of the tapered rubber wheel 34, thereby increasing the rotation speed of the spline shaft 35 and the rotating shaft. Since the tapered rubber wheel 34 is made of rubber, it has good friction. Especially when the device finishes working and reaches a certain temperature, the expansion of the tapered rubber wheel 34 can maintain the rotation of the rotating shaft. After the rotation speed of the shaft increases, the air flow rate in the U-shaped tube 22 increases, and the optical module 2 begins to be quickly cleaned and cooled. Through the implementation of the above-mentioned solution, a soft start of the mechanism is achieved, and ultimately the air flow rate in the U-shaped tube 22 is ensured to increase at a uniform rate. Before debris causes damage to the output end of the optical module 2, it is collected by the circular filter 40 in the telescopic pipe 30, thereby improving the safety of the device during operation.

[0082] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for correcting image distortion of a projector, characterized in that: The following steps are involved: Acquiring actual angle parameters of the electronic level on the optical module (2) based on the controller; The controller compares the actual angle parameter of the optical module (2) with the theoretical angle parameter of the optical module (2) to obtain the adjustment angle of the optical module (2); Based on the adjustment angle, a controller is used to start a driving mechanism so that the angle of the optical module (2) is adapted to the adjustment angle; After the angle of the optical module (2) is adapted to the adjustment angle, the image distortion is eliminated, and the distortion calibration is completed; When the controller is used to start the driving mechanism so that the angle of the optical module (2) is adapted to the adjustment angle, the controller controls the output end of the motor (4) to drive the rocker (5) to rotate, thereby adapting the horizontal angle of the optical module (2) to the horizontal adjustment angle through the lifting adjustment seat (7), and then controls the second output end of the motor based on the controller to drive the connecting rod (8) to rotate, thereby adapting the vertical angle of the optical module (2) to the vertical adjustment angle; After eliminating the image distortion, the angle parameters of the optical module (2) can continue to be recorded by the electronic level to keep the optical module (2) in a normal working state; The projector comprises: a housing (1), an optical module (2) connected to the housing (1), the optical module (2) being connected to an output end of a driving mechanism in the housing (1), the driving mechanism being electrically connected to a controller, the controller being electrically connected to an electronic level, the controller being mounted in the housing (1), and the electronic level being mounted on the optical module (2); The driving mechanism comprises: a motor (4), a motor (4) is installed in the housing (1), an output end of the motor (4) is connected to the end of a rocker (5), the other end of the rocker (5) is hinged to the bottom of a lifting adjustment seat (7), a plurality of sliders (6) are installed at the bottom of the lifting adjustment seat (7), the sliders (6) are interactively connected to the arc-shaped slide rail in the housing (1), the center of the arc-shaped slide rail is located below the motor (4), the output end of the second motor on the lifting adjustment seat (7) is connected to the bottom end of a connecting rod (8), the top end of the connecting rod (8) is hinged to the top end of the second connecting rod (9), the top end of the second connecting rod (9) is hinged to the optical module (2), and the motor (4) and the second motor are both electrically connected to the controller; A filter (11) is provided on the side wall of the housing (1) away from the optical module (2); a cooling fan mechanism (10) is installed in the housing (1); the output end of the cooling fan mechanism (10) is arranged toward the filter (11); and two sealing plates (14) are slidably connected to the side wall of the housing (1) to seal the filter (11); The sealing plate (14) is connected to the end of the regulating mechanism (12), the regulating mechanism (12) is installed in the housing (1), the other end of the regulating mechanism (12) is connected to the second filter (13), the side wall of the housing (1) is equipped with the third filter, and the inner wall of the housing (1) is slidably connected to the second filter (13) to seal the third filter; The regulating mechanism (12) comprises: a heat absorbing tube (15), a heat absorbing tube (15) is installed on each of the two inner walls of the shell (1), a piston (16) is slidingly sealed in the heat absorbing tube (15), a guide rod (17) is inserted on the piston (16), the guide rod (17) and the circular hole and the second circular hole on the heat absorbing tube (15) are slidingly sealed, one end of the guide rod (17) is connected to the sealing plate (14) through a conductive spring (18), the conductive spring (18) is slidingly connected in the guide tube, the guide tube is inserted on the inner wall of the shell (1), the other end of the guide rod (17) is connected to the second filter (13), nitrogen is injected between one side of the piston (16) and the inner wall of the heat absorbing tube (15), the other side of the piston (16) is connected to the other inner wall of the heat absorbing tube (15) through a spring (19), and the spring (19) is arranged close to the second filter (13); A mounting ring is installed in the mounting hole of the housing (1), and an annular groove on the inner wall of the mounting ring is rotatably connected to the optical module (2). A dust shield motor is installed in the housing (1), and the end of the dust shield motor extending outside the housing (1) is connected to a gear (20), the gear (20) is meshed with gear 2, and gear 2 is rotatably connected to the housing (1). A dust shield plate (3) is connected to the bottom of each of the gear (20) and gear 2 to protect the output end of the optical module (2).

2. The method for correcting image distortion of a projector according to claim 1, wherein: The distortion calibration includes multiple times, including: based on the controller, the actual angle parameters of the electronic level are acquired in real time, the controller judges the actual angle parameters acquired in real time, and when there is distortion, an angle and adjustment angle adaptation is performed; when the adaptation is completed, the actual angle parameters of the electronic level are acquired in real time by the controller again, thereby completing multiple distortion calibrations.

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