Projection system, method and apparatus for controlling projection system, and vehicle

Abstract

The present application provides a projection system, a method and apparatus for controlling the projection system, and a vehicle. The projection system disclosed in the present application comprises a projection device and a projection lens module. The projection device is configured to emit first image light carrying image information, and the projection lens module is configured to receive the first image light and change the transmission direction of the first image light, so that the image light emitted by the projection device is transmitted toward a rear direction or a side window direction of the vehicle. In the present application, by providing the projection lens module at a specific position of the vehicle, a user can quickly deploy an outdoor projection scenario, thereby meeting the requirements for more projection scenarios. In addition, the technical solution disclosed in the present application has good environmental adaptability, further improving the operational stability of the whole projection system and the stability of the projection effect, enhancing user experience.

Description

A projection system, a method for controlling the projection system, an apparatus, and a vehicle.

[0001] This application claims priority to Chinese Patent Application No. 202510495842.7, filed on April 18, 2025, entitled "A projection system, a method, apparatus and vehicle for controlling a projection system", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of intelligent vehicle driving, and more particularly to a projection system, a method for controlling the projection system, an apparatus, and a vehicle. Background Technology

[0003] With the intelligent development of automobiles and other means of transportation, users' needs for vehicle functions are gradually extending from a single means of transportation to multiple living spaces. This has led to a growing demand for multi-scenario projection in vehicles, especially in outdoor camping and other scenarios, where vehicles can be used for projection entertainment.

[0004] Therefore, how to make vehicle projection systems meet users' outdoor projection needs while further simplifying deployment complexity in complex outdoor scenarios and improving the stability of projection effects is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides a projection system, a method, apparatus, and vehicle for controlling the projection system. By adding a specific projection lens module to an existing projection device in the vehicle, the projection direction of the original projection device can be changed, thereby expanding the projection scene to different directions. This allows users to quickly deploy outdoor projection scenarios, meeting the needs of more projection scenarios, reducing the complexity of the overall projection system deployment, and reducing the time required for manual deployment and debugging. Furthermore, the technical solution disclosed in this application has good environmental adaptability, further improving the stability of the overall projection system's operation and the stability of the projection effect, and enhancing the user experience.

[0006] Firstly, a projection system is provided for use in a vehicle. The projection system includes a projection device and a projection lens module. The projection device is disposed within the vehicle body and emits a first image light. The first image light is a beam carrying image information. The projection lens module is disposed on one side of the light-emitting side of the projection device and is used to change the transmission direction of the first image light to form a second image light. The projection lens module is also used to transmit the second image light to the rear of the vehicle or to the side window of the vehicle.

[0007] Based on the above solution, by setting a projection lens module on one side of the projection device, the transmission direction of the image light emitted by the projection device is changed. Using rear projection technology, the projection scene can be expanded to the rear or side window direction of the vehicle. This application expands the application of vehicle projection scenes by setting a projection lens module in a specific location. Furthermore, users can quickly deploy and build the expanded projection scene without needing to calibrate the projection light path.

[0008] It should be noted that the first image light emitted by the projection device is transmitted towards the windshield of the vehicle.

[0009] It should be noted that the image information carried by the first image light includes, but is not limited to, text information, image information, video information, etc., that need to be displayed on the projection screen.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the projection lens module is also used to change the projection ratio of the projection device.

[0011] Based on the above solution, in vehicle-extended projection scenarios, the distance between the projection screen and the projection device is not necessarily the same. Furthermore, the size of the projection screen and the size of the projected image required by the user may also differ in different scenarios. Therefore, this application uses a projection lens module to change the throw ratio of the projection device, meeting the image clarity requirements in projection scenarios with different throw ratio needs. The technical solution disclosed in this application has good environmental adaptability, further improving the stability of the overall projection system's operation and the stability of the projection effect, thus enhancing the user experience.

[0012] It should be noted that projection lenses are used to change the projection ratio of a projection device, including increasing or decreasing the projection ratio of the projection device.

[0013] It should be noted that the throw ratio of a projection device includes the ratio of the projection distance to the width of the projected image.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the projection lens module includes a first lens module and a second lens module. The first lens module is disposed between the projection device and the second lens module and is used to modulate the diffusion angle of the first image light. The second lens module is used to receive and reflect the modulated first image light to form the second image light.

[0015] Based on the above solution, the projection lens module includes a lens module for modulating the diffusion angle of the image light and a lens module for changing the transmission direction of the image light. The image light emitted from the projection device first passes through the first lens module, increasing or decreasing the diffusion angle of the image light. The image light with the changed diffusion angle then passes through the second lens module and is transmitted to the rear or side window direction of the vehicle. This application changes the throw ratio of the projection device through the first lens module, thereby enabling the projection device to achieve different extended projection scenarios, ensuring the clarity of the projected image and the stability of the projected image quality.

[0016] It should be noted that the first lens module is used to modulate the spread angle of the beam emitted from the projection device, which can also be understood as the first lens module being used to modulate the field of view (FOV) of the projection device.

[0017] It should be noted that the spread angle of a beam is also called the divergence angle, FOV, etc.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, the second lens module includes a first reflecting mirror. The first reflecting mirror is used to receive and reflect modulated first image light to form second image light. A first angle is formed between the first reflecting mirror and the vertical plane, and the first angle is less than or equal to 20 degrees.

[0019] Based on the above solution, the second lens module includes a reflector, which changes the transmission direction of the image light. The reflector has a first angle with the vertical plane. By adjusting the size of the first angle, the angle between the image light and the vertical plane can be adjusted. This can also be understood as adjusting the trapezoidal distortion of the image light by adjusting the size of the first angle. This application, by adjusting the angle between the reflector and the vertical plane, ensures that the image beam is emitted without obstruction, thus adjusting the distortion of the image. This further improves the quality of the projection system's image, enhances the overall stability of the projection system's operation and the stability of the projection effect, and improves the user experience.

[0020] It should be noted that the first included angle includes the included angle in the clockwise direction with the vertical plane as the reference.

[0021] In conjunction with the first aspect, in some implementations of the first aspect, the second lens module includes a first reflecting mirror and a second reflecting mirror. The first reflecting mirror receives and reflects modulated first image light to form a third image light. The second reflecting mirror receives and reflects the third image light to form a second image light. A second angle is formed between the first and second reflecting mirrors, and the second angle is greater than or equal to 90 degrees.

[0022] Based on the above scheme, the second lens module includes two reflectors, which change the transmission direction of image light through a periscope structure. The lower second reflector has an angle with the vertical plane; by adjusting the relative position and angle between the second and first reflectors, the angle between the image light and the vertical plane can be adjusted. Compared to a structure with only one reflector, two reflectors offer greater flexibility in adjusting the image light transmission direction. This further reduces image distortion while ensuring unobstructed light emission, thus improving the quality of the projected image and enhancing the user experience.

[0023] It should be noted that the second included angle includes the angle formed between the first reflector and the second reflector. Alternatively, the second included angle includes the angle between the extended plane containing the first reflector and the extended plane containing the second reflector.

[0024] It should be noted that the size of the second angle can be adjusted by adjusting the angle between the second reflector and the vertical plane. The second angle is less than or equal to 130 degrees, thus allowing the image light to be emitted without obstruction.

[0025] In conjunction with the first aspect, in some implementations of the first aspect, a trunk opening is provided at the rear of the vehicle body. A projection lens module is used to emit second image light from within the trunk opening.

[0026] Based on the above solution, with the vehicle's trunk open, the projection lens module changes the diffusion angle and transmission direction of the image light, allowing it to exit unobstructed from the trunk opening. The projection system can be set up by placing a projection screen in the trunk opening. This application allows users to quickly deploy outdoor projection scenarios, meeting the needs of more projection scenarios, reducing the complexity of the overall projection system deployment, and minimizing the time required for manual deployment and debugging. Furthermore, because the projection equipment and projection screen are both mounted on the vehicle body in the disclosed technical solution, the overall projection system has good environmental adaptability, further improving the stability of the overall projection system's operation and the stability of the projection effect.

[0027] It should be noted that, when the projection lens module is used to transmit the second image light to the side window direction, the projection lens module is also used to ensure that the second image light exits from the side window opening. Alternatively, the projection lens module is used to ensure that the second image light exits from the side door opening formed when the vehicle's side door is opened.

[0028] In conjunction with the first aspect, in some implementations of the first aspect, along the direction of gravity, the upper edge of the second image light is lower than the lower edge of the projection device and / or the first lens module. The lower edge of the second image light is higher than the upper edge of the lower edge of the vehicle's trunk opening.

[0029] Based on the above solution, in the direction of second image light transmission, the upper edge of the second image light may be blocked by the projection device or the first lens module, and the lower edge of the second image light may be blocked by the vehicle body. By adjusting the transmission direction of the second image light through the projection lens module, the second image light is emitted without obstruction, thereby ensuring the integrity of the image light imaging. The technical solution disclosed in this application further guarantees the quality and integrity of the projected image in the projection scene, further improving user satisfaction and user experience.

[0030] In conjunction with the first aspect, in some implementations of the first aspect, a first projection screen is disposed in the rear space of the vehicle for receiving second image light and transmitting it to form a first image.

[0031] Based on the above solution, the first projection screen uses transmission imaging, allowing users to view projections in outdoor vehicle environments. This further meets users' needs in multiple scenarios and improves user satisfaction.

[0032] It should be noted that the first projection screen can also be used to reflect the light from the second image to form the first image. This can meet the needs of users in camping, outdoor, and other scenarios, allowing them to watch a larger projection screen inside the vehicle with the rear seats folded down.

[0033] In conjunction with the first aspect, in some implementations of the first aspect, the projection system further includes a first control module. The first control module is used to control the size of the first included angle.

[0034] Based on the above solution, when the projection lens module includes a reflector, the projection system can also adjust the distortion of the image by adjusting the size of the first included angle, and adjust the image imaging effect according to the position of the projection screen. This further enhances the flexibility of the projection system disclosed in this application in terms of applicable scenarios, allowing users to adjust it according to practical needs and ensuring a good user experience.

[0035] In conjunction with the first aspect, in some implementations of the first aspect, the projection system further includes a second control module. The second control module is used to control the size of the third included angle. The third included angle includes the angle formed between the second reflector and the vertical plane.

[0036] Based on the above scheme, when the projection lens module includes two reflectors, the projection system can also adjust the distortion of the image by adjusting the size of the third included angle, and adjust the image imaging effect according to the position of the projection screen.

[0037] It should be noted that the first and second reflectors consist of two independent reflectors, and the size of the third included angle is adjusted by controlling the position of the second reflector.

[0038] It should be noted that the first and second reflectors include an integrated "L"-shaped reflector, and the size of the third included angle is adjusted by controlling the position of the overall reflector.

[0039] In conjunction with the first aspect, in some implementations of the first aspect, the projection system further includes a first driving module. The first driving module drives the projection lens module to move along a first slide rail to a first position, so that the projection lens module receives first image light. The first slide rail is disposed on the roof of the vehicle.

[0040] Based on the above solution, a first sliding rail is installed on the vehicle's roof, and a first drive module drives the projection lens module to move along the first sliding rail. When the vehicle needs to achieve a rear projection scene, the projection lens module is controlled to move to a first position to receive image light. When the vehicle's projection scene does not require the projection lens module to change the transmission direction of image light, the projection lens module is moved to one side along the first sliding rail. The technical solution disclosed in this application further simplifies the workload for users in deploying projection scenes, reduces the deployment time of outdoor projection scenes, and improves the user experience.

[0041] In conjunction with the first aspect, in some implementations of the first aspect, the projection system further includes a second drive module. The second drive module is used to drive the first projection screen to rotate around a first direction. The first projection screen is disposed inside the trunk lid of the vehicle or on the roof of the vehicle's trunk.

[0042] Based on the above solution, the vehicle integrates a projection screen, and the folding and unfolding of the projection screen can be controlled. The technical solution disclosed in this application, by integrating a projection screen, further simplifies the workload for deploying projection scenarios, reduces the deployment time for outdoor projection scenarios, and improves the user experience.

[0043] It should be noted that the first direction includes either clockwise or counterclockwise directions.

[0044] In conjunction with the first aspect, in some implementations of the first aspect, the edge of the trunk opening is provided with a first fixing point and a second fixing point for fixing the lower edge of the first projection screen. The first fixing point and the second fixing point are used to ensure that the first projection screen, in its unfolded state, forms a fourth angle with the vertical plane. The fourth angle is greater than or equal to 0 degrees.

[0045] Based on the above solution, by setting fixing points at the edge of the vehicle's trunk opening, the projection screen remains flat when unfolded, further improving the projection system's wind resistance and stability. Furthermore, by setting fixing points to create an angle between the projection screen and the vertical surface, image distortion can be reduced, further enhancing the imaging effect and user experience.

[0046] In conjunction with the first aspect, in some implementations of the first aspect, the projection system further includes a second projection screen. The second projection screen is disposed on the side of the projection device from which light is emitted. When the second projection screen receives the first image light, a second image is formed. The second image and the first image are mirror-symmetrical or centrally symmetrical.

[0047] Based on the above scheme, a second projection screen is set on one side of the projection device that emits light, and the second projection screen directly receives the first image light emitted by the projection device. The image formed by the first image light on the projection screen is mirror-symmetrical or centrally symmetrical with the image formed on the first projection screen.

[0048] It should be noted that when the projection lens module includes a reflector, the image formed on the second projection screen is mirror-symmetrical to the image formed on the first projection screen.

[0049] It should be noted that when the projection lens module includes two reflectors forming a periscope structure, the image formed on the second projection screen is centrally symmetrical to the image formed on the first projection screen.

[0050] It should be noted that the first image and the second image carry the same image information. The dimensions of the first image and the second image are proportionally related.

[0051] Secondly, a method for controlling a projection system is provided, applied to a vehicle projection system. The projection system includes a projection device and a projection lens module. The method includes: responding to a first application scenario of the projection system, causing the projection device to emit a first image light; and responding to a second application scenario of the projection system, causing the projection device to emit a fourth image light. The projection lens module is disposed on one side of the projection device emitting light, and the projection lens module is used to change the transmission direction of the first image light to form a second image light, causing the second image light to be transmitted to the rear of the vehicle or the side window of the vehicle.

[0052] Based on the above solution, the vehicle projection system includes two application scenarios. When the projection system is in different application scenarios, the projection device emits different image lights. The solution disclosed in this application allows the vehicle projection system to meet both front-projection and rear-projection scenarios, satisfying users' projection needs in different scenarios and improving the user experience.

[0053] In conjunction with the second aspect, in some implementations of the second aspect, the fourth image light and the second image light have different transmission directions. When the fourth image light and the second image light are incident on the same projection plane, the projected image formed by the fourth image light and the projected image formed by the second image light are mirror-symmetrical or centrally symmetrical.

[0054] It should be noted that the fourth image light and the second image light carry the same image information to be projected. The size of the projected image formed by the fourth image light and the size of the projected image formed by the second image light are proportional.

[0055] In conjunction with the second aspect, in some implementations of the second aspect, in response to the projection system switching to the first application scenario, the method further includes acquiring a first image light. The first image light includes image light after horizontally flipping and / or vertically flipping the image light emitted by the projection device at the current moment.

[0056] Based on the above solution, when users view images or videos projected onto a vehicle, they can switch projection scenes without switching the projection signal source again. In response to switching to the first application scene, the projection system, according to the structure of the projection lens module, performs horizontal and / or vertical flipping processing on the image light emitted by the current projection device before transmitting it to the screen in the first application scene for imaging. This further enhances the user experience when switching projection scenes.

[0057] In conjunction with the second aspect, in some implementations of the second aspect, the method further includes activating or switching the projection system to a first application scenario in response to the projection lens module being located at a first position. The first position is located on the roof of the vehicle, for enabling the projection lens module to receive first image light.

[0058] Based on the above solution, the vehicle may also include sensors or detectors that, when the projection lens module is detected to be in the first position, instruct the vehicle's projection system to switch to the first application scenario. The technical solution disclosed in this application includes trigger indicators for multiple scenario switching modes, providing users with more interactive options and further enhancing the user experience.

[0059] It should be noted that the projection lens module can be fixed and removed from the vehicle's primary position using methods such as magnetic attraction, threaded connection, and snap-fit.

[0060] In conjunction with the second aspect, in some implementations of the second aspect, in response to a first application scenario of the projection system, the method further includes controlling the projection lens module to move along a first slide rail to a first position. The first slide rail is disposed on the roof of the vehicle.

[0061] In conjunction with the second aspect, in some implementations of the second aspect, in response to a first application scenario of the projection system, the method further includes controlling the size of a first included angle so that the second image light exits from the trunk opening of the vehicle. The first included angle includes the angle formed between a first reflector in the projection lens module and a vertical plane. The first reflector is used to receive and reflect the first image light to form the second image light. The first included angle is less than or equal to 20 degrees.

[0062] In conjunction with the second aspect, in some implementations of the second aspect, in response to the first application scenario of the projection system, the method further includes controlling the size of a third included angle so that the second image light exits from the trunk opening of the vehicle. The third included angle includes the angle formed between the second reflector in the projection lens module and the vertical plane. The first reflector of the projection lens module is used to receive and reflect the first image light to form the third image light. The second reflector is used to receive and reflect the third image light to form the second image light.

[0063] In conjunction with the second aspect, in some implementations of the second aspect, in response to a first application scenario of the projection system, the method further includes driving a first projection screen to unfold, so that the first projection screen receives second image light and transmits it to form a first image.

[0064] In conjunction with the second aspect, in some implementations of the second aspect, the projection lens module is also used to change the projection ratio of the projection device.

[0065] In conjunction with the second aspect, in some implementations of the second aspect, the projection lens module includes a first lens module and a second lens module. The first lens module is disposed between the projection device and the second lens module and is used to modulate the diffusion angle of the first image light. The second lens module is used to receive and reflect the modulated first image light to form the second image light.

[0066] In conjunction with the second aspect, in some implementations of the second aspect, the second lens module includes a first reflecting mirror and a second reflecting mirror. The first reflecting mirror receives and reflects modulated first image light to form a third image light. The second reflecting mirror receives and reflects the third image light to form a second image light. A second angle is formed between the first and second reflecting mirrors. The second angle is greater than or equal to 90 degrees.

[0067] In conjunction with the second aspect, in some implementations of the second aspect, a trunk opening is provided at the rear of the vehicle body. A projection lens module is used to emit second image light from within the trunk opening.

[0068] In conjunction with the second aspect, in some implementations of the second aspect, along the direction of gravity, the upper edge of the second image light is lower than the lower edge of the projection device and / or the first lens module. The lower edge of the second image light is higher than the upper edge of the lower edge of the vehicle's trunk opening.

[0069] In conjunction with the second aspect, in some implementations of the second aspect, a first projection screen is disposed in the rear space of the vehicle to receive the second image light and transmit it to form a first image.

[0070] In conjunction with the second aspect, in some implementations of the second aspect, a first fixing point and a second fixing point are provided at the edge of the trunk opening to fix the lower edge of the first projection screen. The first fixing point and the second fixing point cause the first projection screen to form a fourth angle with the vertical plane when it is unfolded. The fourth angle is greater than or equal to 0 degrees.

[0071] In conjunction with the second aspect, in some implementations of the second aspect, the projection system further includes a second projection screen. The second projection screen is disposed on the side of the projection device from which light is emitted. When the second projection screen receives the first image light, a second image is formed. The second image and the first image are mirror-symmetrical or centrally symmetrical.

[0072] Thirdly, embodiments of this application provide a cockpit system. This cockpit system includes a projection system and a seat provided in the first aspect and any implementation thereof. The seat is for a user to sit on.

[0073] In conjunction with the third aspect, in some implementations of the third aspect, the cockpit system also includes a control system. This control system is used to acquire the application scenario of the vehicle's projection system and control the projection device to emit a first image light or a fourth image light according to the application scenario.

[0074] It is understood that the application scenarios of a projection system include the first and second application scenarios mentioned above. The control system can be a control device, controller, control module, control apparatus, etc. In some feasible implementations, the control system can be a central control system, and also possess other control functions, including but not limited to acquiring the application scenario of the projection system and controlling the projection device to emit corresponding image light according to the application scenario.

[0075] Fourthly, embodiments of this application provide a means of transportation, including a projection system as provided in the first aspect and any implementation thereof, or a cockpit system as provided in the third aspect and any implementation thereof.

[0076] Fifthly, a control device is provided, comprising: at least one processor for executing a computer program or instructions to perform the method in any possible implementation of the second aspect. Optionally, the device further comprises a memory for storing the computer program or instructions. Optionally, the device further comprises a communication interface through which the processor reads the computer program or instructions.

[0077] In one implementation, the device is a control device.

[0078] In another implementation, the device is a chip, chip system, or circuit used to control the device.

[0079] A sixth aspect provides a processor for executing any possible implementation of the methods described in the second and second aspects above.

[0080] Unless otherwise specified, or unless it contradicts its actual function or internal logic in the relevant description, the sending and receiving / receiving operations involved in the processor can be understood as processor output and receiving, input, etc., and this application does not limit them in this regard.

[0081] Optionally, the device further includes: a memory for storing a program; correspondingly, at least one processor for executing the computer program or instructions in the memory.

[0082] Optionally, the device also includes a communication interface. The communication interface is coupled to the processor and can be used to input information to the processor or output information from the processor.

[0083] A seventh aspect provides a computer-readable storage medium storing program code for execution by a device, the program code including methods for performing any possible implementation of the second aspect and the second aspect described above.

[0084] Eighthly, a computer program product containing instructions is provided, which, when run on a computer, causes the computer to perform the methods of any possible implementation of the second aspect and the second aspect described above.

[0085] Ninth aspect, a chip is provided, the chip including a processor and a communication interface, the processor reading instructions from a memory through the communication interface and executing the methods in any possible implementation of the second aspect and the second aspect described above.

[0086] Optionally, as one implementation, the chip also includes a memory storing computer programs or instructions, and a processor for executing the computer programs or instructions in the memory. When the computer programs or instructions are executed, the processor is used to perform the methods in any of the possible implementations of the second aspect and the second aspect described above.

[0087] The beneficial effects of the second to ninth aspects mentioned above can be found in the description of the beneficial effects in the first aspect, and will not be repeated here. Attached Figure Description

[0088] Figure 1 is a functional block diagram of a vehicle 100 provided in an embodiment of this application.

[0089] Figure 2 is a schematic diagram of the structure of a projection system 200 provided in an embodiment of this application.

[0090] Figure 3 is a schematic diagram of another projection system 200 provided in an embodiment of this application.

[0091] Figure 4 is a schematic diagram of a projection system 200 mounted on a vehicle according to an embodiment of this application.

[0092] Figure 5 is a structural schematic diagram of another projection system 200 provided in an embodiment of this application.

[0093] Figure 6 is a structural schematic diagram of another projection system 200 provided in an embodiment of this application.

[0094] Figure 7 is a schematic diagram of the structure of an expansion lens assembly 221 provided in an embodiment of this application.

[0095] Figure 8 is a schematic flowchart of a projection system method 800 provided in an embodiment of this application.

[0096] Figure 9 shows a schematic diagram of the structure of a control device provided in an embodiment of this application.

[0097] Figure 10 shows a schematic diagram of another control device provided in an embodiment of this application. Detailed Implementation

[0098] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0099] First, the terms "first," "second," and various numerical designations used in the textual descriptions or drawings of the embodiments of this application shown below are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. For example, the first image light and the second image light are different light beams, etc.

[0100] Second, the term "comprising" and any variations thereof in the embodiments of this application shown below are intended to cover non-exclusive inclusion, for example, a system, product or device that includes a series of units is not necessarily limited to those units that are explicitly listed, but may include other units that are not explicitly listed or that are inherent to such products or devices.

[0101] Third, in the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Embodiments or designs described as "exemplarily" or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. The use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner to facilitate understanding.

[0102] Fourth, in the embodiments of this application, image light refers to light carrying an image (or image information) used to generate an image, and can also be called imaging light, etc.

[0103] Fifth, in the accompanying drawings of this application, the thickness, size, and shape of each component structure have been slightly exaggerated for ease of illustration. Specifically, the component shapes shown in the drawings are illustrated by way of example, and the drawings are for illustrative purposes only and are not drawn to scale.

[0104] Sixth, unless otherwise specified, all terms used in this application (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0105] With the further development of intelligent vehicles, users' demands for vehicle functions are gradually extending from a single means of transportation to multi-scenario living spaces, among which camping projection, as a core experience of immersive outdoor entertainment, has attracted much attention. In some solutions, users connect an external portable projection device to the vehicle's own power supply and set up a temporary projection system using a separate bracket and screen. This solution requires users to build the entire projection system themselves, with certain requirements for adjusting the optical path between the projection beam and the projection screen, ensuring the flatness of the screen, and ensuring the flatness of the setup site. The overall complexity of setting up the projection system is relatively high, and the setup time is long. Furthermore, the image quality and projection distance of portable projection devices further limit the setup site, resulting in low adaptability to the setup environment and vehicle.

[0106] In other solutions, some vehicles have headlights with projection capabilities. While this simplifies the deployment of the projection light source, users still need to set up a projection screen and adjust the distance and relative position between the screen and the projection light source; or they need to find a suitable wall or other surface to serve as the projection screen and receive the projection beam. The technology of vehicle headlight projection still cannot achieve adaptive image adjustment, and due to the functional limitations of the headlights, the brightness and resolution of the projected image cannot meet the demands for higher-definition audio-visual content.

[0107] Based on this, the technical solution disclosed in this application sets specific positions for fixing the projection lens module and the projection screen. The projection lens module changes the transmission direction of the beam emitted from the projection device, allowing the image light to be transmitted to the position set on the projection screen, thereby achieving image and video projection display. The technical solution disclosed in this application modularizes the projection lens module and projection screen, setting specific positions on the vehicle for fixing or installing the projection lens module or projection screen. This application simplifies the complexity of setting up the overall projection system, allowing users to complete the setup and deployment of the projection scene in a short time. Furthermore, in the technical solution disclosed in this application, the projection lens module or screen can also be integrated into the vehicle at the factory, and the projection mode can be switched via electric control. The technical solution disclosed in this application simplifies the complexity of optical path debugging between the beam emitted from the projection device and the projection screen, solving the time cost of manual setup and optical path debugging. Furthermore, by setting specific positions to fix the projection lens module or screen, the technical solution disclosed in this application further improves the stability of the overall projection system and enhances its environmental adaptability. Furthermore, the projection system disclosed in this application can simultaneously ensure efficient use of in-vehicle space and meet automotive-grade safety standards.

[0108] The following section first describes the vehicles to which the projection system provided in this application can be applied.

[0109] Figure 1 is a functional block diagram of a vehicle 100 provided in an embodiment of this application.

[0110] Vehicle 100 may include a perception system 120 and a computing platform 150. The perception system 120 may include one or more sensors for sensing information about the environment surrounding vehicle 100. For example, the perception system 120 may include a positioning system, which may be a Global Positioning System (GPS), a BeiDou system, or another positioning system. The perception system 120 may also include one or more of the following: an inertial measurement unit (IMU), lidar, millimeter-wave radar, ultrasonic radar, and a camera device.

[0111] Some or all of the functions of vehicle 100 can be controlled by computing platform 150. Computing platform 150 may include one or more processors, such as processors 151 to 15n (n being a positive integer). A processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a central processing unit (CPU), microprocessor, graphics processing unit (GPU) (which can be understood as a type of microprocessor), or digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. These logical relationships are fixed or reconfigurable. For example, the processor may be a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as a field-programmable gate array (FPGA). In reconfigurable hardware circuits, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the processor loading instructions to implement some or all of the functions of the aforementioned units. Furthermore, it can also be hardware circuitry designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), tensor processing unit (TPU), or deep learning processing unit (DPU). In addition, the computing platform 150 may also include a memory for storing instructions. Some or all of the processors 151 to 15n can call the instructions in the memory to implement corresponding functions. For example, the computing platform 150 (or one or more of the processors 151 to 15n) can control the unfolding and retraction of the screen; it can control the adjustment of the projection lens module.

[0112] Figure 2 is a schematic diagram of the structure of a projection system 200 provided in an embodiment of this application.

[0113] As an example and not a limitation, the figure shows a schematic diagram of the structure of a projection system 200. In the technical solution disclosed in this application, the projection system 200 can satisfy not only the external projection scenario (Scenario 1) but also the internal projection scenario (Scenario 2). Hereinafter, the structure of the projection system 200 and the external projection scenario (Scenario 1) will be described first.

[0114] The projection system 200 includes a projection device 210 and a projection lens module 220. The projection device 210 is used to emit image light 1, which is a beam of light carrying image information, and the image light 1 is transmitted to the windshield.

[0115] It should be understood that the image light 1 emitted by the projection device 210 can carry image stream signals or video stream signals. This application does not make any special limitations on the information content and information type carried by the image light 1.

[0116] It should be understood that image light 1 is a specific implementation of the first image light in the implementation of this application, and does not constitute any limitation on the scope of protection of this application.

[0117] The projection lens module 220 is disposed on the light-emitting side of the projection device 210, and is used to receive image light 1 and change the transmission direction of image light 1 to form image light 2. Image light 2 is transmitted to the rear of the vehicle or the side window of the vehicle.

[0118] It should be understood that image light 2 is a specific implementation of the second image light in the implementation of this application, and does not constitute any limitation on the scope of protection of this application.

[0119] The projection system 200 also includes a rear projection screen 230, which receives image light 2, transmits image light 2, and forms an image.

[0120] In one specific implementation, the projection device 210 emits image light 1, the projection lens module 220 receives the image light 1 and reflects it to generate image light 2. The image light 2 is incident on one side of the rear projection screen 230 and transmitted through it, forming image 1 on the other side of the rear projection screen 230. The user views image 1 on the other side of the rear projection screen 230, that is, the user views image 1 on the other side of the projection device 210 relative to the rear projection screen 230.

[0121] In another specific implementation, the projection device 210 emits image light 1, and a projection screen 1 is placed directly on the side where the light is emitted from the projection device 210. The projection screen 1 receives the image light 1 and reflects it to form an image 2. The user views the image 2 on the side of the projection device 210 opposite to the projection screen 1. The image 2 and the image 1 are mirror-symmetric or centrally symmetric images.

[0122] It should be understood that since the projection distances between the projection screen 1 and the rear projection screen 230 and the projection device 210 are different, the sizes of image 1 and image 2 may be different. This application does not make any special limitation on the size relationship between image 1 and image 2.

[0123] It should be understood that the rear projection screen 230 is a specific implementation of the first projection screen in this application and does not constitute any limitation on the scope of protection of this application.

[0124] It should be understood that projection screen 1 is a specific implementation of the second projection screen in this application, and does not constitute any limitation on the scope of protection of this application.

[0125] It should be understood that Image 1 is a specific implementation of the first image in the implementation of this application, and does not constitute any limitation on the scope of protection of this application.

[0126] It should be understood that Image 2 is a specific implementation of the second image in the implementation of this application, and does not constitute any limitation on the scope of protection of this application.

[0127] It should be noted that when the image light 2 is transmitted to the rear of the vehicle, the rear projection screen 230 is positioned at the rear of the vehicle. For example, the rear projection screen 230 is positioned within the opening space formed by the vehicle's trunk to receive and transmit the image light 2 to form an image. As another example, when the vehicle's trunk is open, a tent or awning accessory can be attached to the rear of the vehicle, and the rear projection screen 230 is positioned on the attached tent or awning accessory to receive and transmit the image light 2 to form an image. This application does not impose any special limitation on the specific location of the rear projection screen 230.

[0128] It should be noted that when image light 2 is transmitted to the side window direction of the vehicle, the rear projection screen 230 is positioned in that direction. For example, the rear projection screen 230 may be positioned on the outer side of the vehicle roof, covering the outer side of the vehicle window when unfolded. The rear projection screen 230 receives and transmits image light 2 to form an image. Alternatively, the rear projection screen 230 may be positioned above the vehicle side window, covering it when unfolded. The rear projection screen 230 receives and transmits image light 2 to form an image. Furthermore, the rear projection screen 230 may also be positioned on the structure around the window frame of the vehicle side window, or integrated into the side window glass. This application does not specifically limit the location of the rear projection screen 230.

[0129] The projection system 200 can also meet the in-vehicle projection scenario (Scenario 2), which is described below. When the projection system 200 performs in-vehicle projection, it also includes a front projection screen 240. The projection device 210 emits image light 4, and the front projection screen 240 is positioned on the side where the light is emitted from the projection device 210. The image light 4 is directly transmitted to the front projection screen 240, which reflects the image light 4 to form an image. The image light 4 is transmitted towards the windshield of the vehicle. The transmission directions of image light 4 and image light 2 are different.

[0130] It should be noted that when image light 4 and image light 1 carry the same image information, and when image light 4 and image light 2 are incident on the same projection plane, the projected image formed by image light 4 and the projected image formed by image light 2 are mirror-symmetric or centrally symmetric.

[0131] It should be understood that, since the beam diffusion angles of image light 4 and image light 2 may be different, and the distances of the emitted light source from the projection plane may be different, the sizes of the images formed by image light 4 and image light 2 may be different. This application does not impose any special limitation on the size of the image.

[0132] It should be understood that the front projection screen 240 is a specific implementation of the second projection screen in this application and does not constitute any limitation on the scope of protection of this application.

[0133] It should be understood that image light 4 is a specific implementation of the fourth image light in the implementation of this application, and does not constitute any limitation on the scope of protection of this application.

[0134] In one specific implementation, in an in-vehicle projection scenario, a front projection screen 240 is positioned between the driver's cabin and the second-row passenger seats, and a projection device 210 is mounted on the vehicle roof, behind the second-row passenger seats.

[0135] It should be noted that the front projection screen 240 and the projection device 210 can be folded, unfolded and moved through mechanical structures, and this application does not make any special limitations on the specific mechanical structure.

[0136] In one specific implementation, in the external projection scenario, the rear projection screen 230 is set in the opening space formed when the vehicle trunk is open, and shares a projection device 210 with the internal projection scenario.

[0137] It should be noted that, in order to distinguish between the screens used in in-vehicle projection scenarios and those used in out-of-vehicle projection scenarios, the screens used in in-vehicle projection scenarios are called front projection screens, and the screens used in out-of-vehicle projection scenarios are called rear projection screens. This does not impose any restrictions on the material of the projection screen or the projection light path.

[0138] It should be noted that the vehicle exterior projection scenarios disclosed in this application include scenarios where users view projected images in the external space of a vehicle. The projection screen in the vehicle exterior projection scenario, when unfolded, can be placed within the opening space formed when the vehicle's trunk is open; alternatively, it can be placed in the screen hanging area of ​​an external vehicle tent when the vehicle's trunk is open. In some specific implementations, the vehicle exterior projection scenario is also referred to as scenario 1, projection scenario 1, application scenario 1, first application scenario, camping scenario, outdoor projection scenario, etc., and this application does not specifically limit its usage.

[0139] It should be noted that the in-vehicle projection scenario disclosed in this application includes scenarios where users sit inside a vehicle and watch projected images. The projection screen in the in-vehicle projection scenario is positioned within the vehicle's interior space, whether unfolded or folded. In some specific implementations, the in-vehicle projection scenario is also referred to as scenario 2, projection scenario 2, application scenario 2, second application scenario, movie mode, multimedia mode, etc., and this application does not specifically limit its usage.

[0140] In one specific implementation, the projection lens module 220 includes a reflector group for receiving the image light 1 emitted from the projection device 210 and reflecting the image light 1 to form the image light 2, so that the image light 2 is projected onto the projection screen 230.

[0141] It should be noted that, in order to improve the viewing experience and overall user experience of the in-vehicle projection, the projection device 210 is usually positioned behind the second-row passenger seats. Therefore, the distance between the projection device 210 and the front projection screen 240 is often greater than the distance between the projection device 210 and the rear projection screen 230. Furthermore, to further enhance the outdoor camping projection experience, the image size on the rear projection screen 230 needs to be larger than the image size on the front projection screen 240.

[0142] As an example, and not a limitation, in an in-vehicle projection scenario, the projection distance between the projection device 210 and the front projection screen 240 is approximately 1.1 meters to 1.3 meters, and the size of the projected image on the front projection screen 240 is approximately 32 inches. In this case, the throw ratio of the projection device 210 is approximately 1.3 to 1.8. In an out-of-vehicle projection scenario, the projection distance between the projection device 210 and the rear projection screen 230 is approximately 0.8 meters to 1.3 meters, and the size of the projected image on the rear projection screen 230 is approximately 50 inches. In this case, the throw ratio of the projection device 210 is approximately 0.8 to 1.3.

[0143] In one specific implementation, the projection lens module 220 is also used to change the projection ratio of the projection device 210.

[0144] It should be noted that the projection lens module 220 changes the throw ratio of the projection device 210 by either increasing or decreasing the throw ratio of the projection device 210. The throw ratio of the projection device 210 includes the ratio of the projection distance to the width of the projected image.

[0145] The different structures of the projection lens module 220 in the projection system 200 will be described below with reference to Figures 3 to 7.

[0146] Figure 3 is a schematic diagram of another projection system 200 provided in an embodiment of this application.

[0147] The projection lens module 220 includes a wide-angle lens group 221 and a reflector group 222. The wide-angle lens group 221 and the reflector group 222 are sequentially arranged on one side of the projection device 210 where light is emitted. The wide-angle lens group 221 is used to change the projection viewing angle of the projection device 210. The wide-angle lens group 221 is used to receive image light 1 and to modulate the diffusion angle of image light 1. By modulating the diffusion angle of image light 1, the wide-angle lens group 221 changes the width of the projected image image 1 projected onto the projection screen. The reflector group 222 is used to receive the image light 1 emitted from the wide-angle lens group 221 and reflect the image light 1 to generate image light 2.

[0148] It should be understood that the wide-angle lens group 221 is a specific implementation of the first lens module in this application and does not constitute any limitation on the scope of protection of this application.

[0149] It should be understood that the reflector group 222 is a specific implementation of the second lens module in this application and does not constitute any limitation on the scope of protection of this application.

[0150] In one specific implementation, the mirror assembly 222 includes at least one mirror. This mirror receives and reflects image light 1 emitted from the expansion mirror assembly 221 to form image light 2. The mirror forms a first angle with the vertical plane, which is less than or equal to 20 degrees.

[0151] It should be noted that in the technical solution disclosed in this application, when describing the included angle, the vertical plane is used as the reference and the clockwise defense line is the positive direction.

[0152] In one specific implementation, the projection system 200 further includes a first control module for controlling the size of the first included angle. Further, the first control module is located at one end or the midpoint of at least one reflector, driving the reflector to rotate to control the size of the first included angle.

[0153] It should be noted that the angle between the reflector and the vertical plane affects the angle between the projection plane and the vertical plane. When there is an angle between the projection plane and the vertical plane, trapezoidal distortion occurs in the projected image. Therefore, to reduce trapezoidal distortion and improve the sharpness of the projected image, the first angle should be less than or equal to 20 degrees, and the smaller the value of the first angle, the less trapezoidal distortion in the projected image.

[0154] However, when the first included angle is less than a certain range, the upper edge of the image light 2 reflected by the mirror will be blocked by the lower edge of the expanding lens group 221 or the projection device 210. For example, blocking point 1 or blocking point 2 shown in the figure. Therefore, along the direction of gravity, the upper edge of the image light 2 is lower than the lower edge of the transmission device and / or the expanding lens group 221. Along the direction of gravity, during transmission, the upper edge of the image light 2 will be lower than blocking point 1 and blocking point 2. Wherein, blocking point 1 is the lowest position of the projection device 210 along the direction of gravity; blocking point 2 is the lowest position of the expanding lens group 221 along the direction of gravity.

[0155] It should be noted that the positions of the expanding lens assembly 221 and the projection device 210 in the direction of gravity in the attached figures are only schematic drawings, and this application does not impose any special limitations on the positions of the expanding lens assembly 221 and the projection device 210 in the direction of gravity. Furthermore, the relative positions of the blocking point 1 and the blocking point 2 in the figures are also only schematic drawings, and this application does not impose any special limitations on the positions of the blocking point 1 and the blocking point 2 in the direction of gravity.

[0156] Figure 4 is a schematic diagram of a projection system 200 mounted on a vehicle according to an embodiment of this application.

[0157] The figure shows a vehicle 100, which has a trunk at the rear of the vehicle. When the trunk lid 101 is open, a trunk opening 102 is formed at the rear of the vehicle.

[0158] In one specific implementation, the projection lens module 220 is used to emit image light 2 from the trunk opening 102.

[0159] In one specific implementation, the projection device 210 is installed on the roof of the vehicle 100 (not shown in the figure). The projection lens module 220 is also installed on the roof of the vehicle 100 (not shown in the figure), and is located on the side where the projection device 210 emits light.

[0160] Image light 1 emitted from projection device 210 is expanded by angle-expanding lens group 221 and then incident on reflecting mirror group 222. Reflecting mirror group 222 reflects the received image light 1 to form image light 2. Image light 2 can exit from trunk opening 102. Along the direction of gravity, the upper edge of image light 2 is lower than the upper edge of trunk opening 102, and the lower edge of image light 2 is higher than the lower edge of trunk opening 102. Furthermore, when the upper edge of image light 2 exits from trunk opening 102, it is not blocked by trunk lid 101 or the lower crossbeam 103 of the vehicle trunk. Horizontally, the left and right edges of image light 2 are both inside the trunk perimeter structure.

[0161] It should be understood that in some specific implementations, the trunk is also referred to as the rear tail box, tail box, luggage compartment, etc., and this application does not make any special limitation on this.

[0162] It should be noted that the names of structures surrounding the trunk opening 102 may differ depending on the vehicle manufacturer and model. This application does not impose any specific limitations on the names of vehicle component structures. For example, the upper peripheral structure of the trunk opening 102 includes, but is not limited to, the trunk roof interior panel. The lower peripheral structure of the trunk opening 102 includes, but is not limited to, the lower crossbeam 103, the trunk tailgate sill, and the upper edge of the lower bumper. The peripheral structures on both sides of the trunk opening 102 in the horizontal direction include, but are not limited to, the inner trim panel of the trunk, the lower edge of the vehicle's D-pillar, and the inner edge of the rear fender.

[0163] In one specific implementation, the edge of the trunk opening 102 is provided with fixing points 1 and 2. Fixing points 1 and 2 are used to fix the lower edge of the rear projection screen 230.

[0164] It should be understood that fixed point 1 is a specific implementation of the first fixed point in the implementation of this application, and does not constitute any limitation on the scope of protection of this application.

[0165] It should be understood that fixed point 2 is a specific implementation of the second fixed point in the implementation of this application, and does not constitute any limitation on the scope of protection of this application.

[0166] In one specific implementation, the rear projection screen 230 is disposed inside the trunk lid 101 of the vehicle, or in the roof space of the trunk opening 102 of the vehicle. Furthermore, the rear projection screen 230 can be disposed at the fixed point 5 or fixed point 6 shown in the figure.

[0167] In one specific implementation, the rear projection screen 230 unfolds or folds by rotating around a first direction. The first direction includes a clockwise or counterclockwise direction. For example, rotating the rear projection screen 230 clockwise allows it to fold, switching from an unfolded state to a folded state. Rotating the rear projection screen 230 counterclockwise allows it to unfold, switching from a folded state to an unfolded state.

[0168] In one specific implementation, the projection system 200 includes a second drive module. The second drive module is used to drive the rear projection screen 230 to rotate around a first direction. Further, the second drive module can be located at one end of the rear projection screen 230.

[0169] It should be noted that when the rear projection screen 230 is set at fixed point 5 or fixed point 6, when the rear projection screen 230 is in the unfolded state, the lower edge of the rear projection screen 230 can be fixed at fixed point 1 and fixed point 2, so that the rear projection screen 230 forms a fourth angle with the vertical plane when it is in the unfolded state.

[0170] In one specific implementation, the trunk opening 102 of vehicle 100 is provided with fixing points 1, 2, 3, and 4. The rear projection screen 230 can be a separate accessory and is not integrated into vehicle 100. When needed, the user can fix the four corners of the rear projection screen 230 to fixing points 1, 2, 3, and 4 respectively, so that the rear projection screen 230 forms a fourth angle with the vertical plane.

[0171] In one specific implementation, the trunk opening of vehicle 100 is provided with fixing points for securing an external tent attached to the trunk. The external tent is also provided with fixing points for securing a rear projection screen 230. When needed, the user can fix the rear projection screen 230 to the fixing points on the external tent, forming a fourth angle between the rear projection screen 230 and the vertical plane.

[0172] In one specific implementation, the fourth included angle is greater than or equal to 0 degrees. Further, the fourth included angle is less than or equal to 40 degrees.

[0173] In one specific implementation, the rear projection screen 230 is positioned on one side of the side window of the vehicle 100. The projection lens module 220 is used to transmit the image light 2 to the direction of the vehicle's side window.

[0174] It should be noted that this application does not specifically limit the placement of the rear projection screen 230 on one side of the left or right side window of the vehicle 100.

[0175] In one specific implementation, the rear projection screen 230 is integrated into the roof of the vehicle 100 on one side of the side window; or it is integrated around the window frame of the side window. The second drive module is used to drive the unfolding and folding of the rear projection screen 230.

[0176] In one specific implementation, fixing points are set on the door or frame of the vehicle 100 where the side window is located. The rear projection screen 230 can be a separate accessory, not integrated into the vehicle 100. When needed, the user can fix the rear projection screen 230 to the fixing points with the door open.

[0177] In one specific implementation, a fixing point for securing an external tent on one side of the vehicle 100 is provided on one side of the side window. The external tent also has fixing points for securing a rear projection screen 230. The user can then secure the rear projection screen 230 to the fixing points on the external tent when needed.

[0178] It should be noted that the door where the side window of vehicle 100 is located may be a swing door or a wing door that opens horizontally; this application does not make any special limitation on this.

[0179] Figure 5 is a structural schematic diagram of another projection system 200 provided in an embodiment of this application.

[0180] In one specific implementation, the mirror assembly 222 includes at least two mirrors. Mirror 223 receives and reflects image light 1 emitted from the expansion mirror assembly 221 to form image light 3. Mirror 224 receives and reflects image light 3 to form image light 2.

[0181] It should be understood that reflector 223 is a specific implementation of the first reflector in the implementation of this application, and does not constitute any limitation on the scope of protection of this application.

[0182] It should be understood that reflector 224 is a specific implementation of the second reflector in this application and does not constitute any limitation on the scope of protection of this application.

[0183] It should be understood that image light 3 is a specific implementation of the third image light in the implementation of this application, and does not constitute any limitation on the scope of protection of this application.

[0184] In one specific implementation, a second included angle is formed between reflector 223 and reflector 224, and the second included angle is greater than or equal to 90 degrees.

[0185] It should be understood that the second included angle includes the angle formed by the extension of the plane where reflector 223 is located and the plane where reflector 224 is located.

[0186] In one specific implementation, the second included angle is less than or equal to a specific angle threshold. The second included angle is used to allow image light 2 to exit from the trunk opening 102 and be transmitted onto the rear projection screen 230. The threshold range of the second included angle is related to the vehicle model, body size, and trunk opening size.

[0187] In one specific implementation, the second included angle is less than or equal to 130 degrees.

[0188] In one specific implementation, a third angle is formed between the reflector 224 and the vertical plane.

[0189] In one specific implementation, the projection system 200 further includes a second control module for controlling the size of the third included angle. Further, the second control module is located at one end or the midpoint of the reflector 224, driving the reflector 224 to rotate, thereby controlling the size of the third included angle.

[0190] It should be noted that the implementation of the projection system 200 shown in Figure 5 mounted on the vehicle 100 can be referred to the implementation in Figures 3 and 4. For the sake of brevity, this application will not repeat it here.

[0191] Figure 6 is a structural schematic diagram of another projection system 200 provided in an embodiment of this application.

[0192] In one specific implementation, the reflector group 222, including reflectors 223 and 224, can be integrated into a single reflector.

[0193] In one specific implementation, the mirror assembly 222 includes an "L"-shaped mirror.

[0194] In one specific implementation, the included angle of the "L"-shaped structure of the reflector group 222 is the second included angle, which is greater than or equal to 90 degrees.

[0195] In one specific implementation, the second included angle is less than or equal to 130 degrees.

[0196] In one specific implementation, a third angle is formed between the reflector 224 in the reflector group 222 and the vertical plane.

[0197] In one specific implementation, the projection system 200 further includes a second control module for controlling the size of the third included angle. Further, the second control module is located at one end or the midpoint of the reflector group 222, driving the reflector group 222 to rotate, thereby controlling the size of the third included angle.

[0198] It should be noted that the implementation of the projection system 200 shown in Figure 6 mounted on the vehicle 100 can be referred to the implementation in Figures 3 to 5. For the sake of brevity, this application will not repeat it here.

[0199] As an example and not a limitation, the structure of the expanding lens assembly 221 provided in this application is described below with reference to Figure 7.

[0200] Figure 7 is a schematic diagram of the structure of an expansion lens assembly 221 provided in an embodiment of this application.

[0201] In one specific implementation, the expanding lens assembly 221 includes at least one lens group with a positive focal length and at least one lens group with a negative focal length. The expanding lens assembly 221 is used to receive the image light 1 emitted from the projection device 210 and to increase the diffusion angle of the image light 1. The expanding lens assembly 221 is also used to change the projection ratio of the projection device 210.

[0202] In one specific implementation, the wide-angle lens group 221 is used to shorten the focal length of the projection device 210 and / or expand the width of the projected image of the projection device 210.

[0203] It should be understood that in some specific implementations, the spread angle of the beam is also referred to as the divergence angle of the beam, and this application does not impose any special limitation on this.

[0204] Figure 8 is a schematic flowchart of a projection system method 800 provided in an embodiment of this application.

[0205] Method 800 can be executed by a control device, specifically by a drive module and / or control module included in the projection system, or by a central control system, central control device, or processing chip of a vehicle connected to the projection system. Specifically, method 800 includes the following steps.

[0206] S802, in response to a first application scenario of the projection system, causes the projection device to emit a first image light. Alternatively, in response to a second application scenario of the projection system, causes the projection device to emit a fourth image light.

[0207] In one specific implementation, the vehicle is equipped with a projection lens module. In response to a first application scenario of the projection system, method 800 further includes moving the projection lens module to a first position for receiving first image light emitted from the projection device.

[0208] In one specific implementation, the vehicle projection lens module is mounted on the roof of the vehicle and moves to a position via a first slide rail. In response to a first application scenario of the projection system, method 800 further includes controlling the projection lens module to move along the first slide rail to a first position.

[0209] In one specific implementation, in response to a first application scenario of the projection system, method 800 further includes adjusting the size of a first angle between the first reflector in the projection lens module and the vertical plane, so that the second image light is emitted from the trunk opening of the vehicle.

[0210] In another specific implementation, in response to the first application scenario of the projection system, method 800 further includes adjusting the size of the third angle between the second reflector in the projection lens module and the vertical plane, so that the second image light is emitted from the trunk opening of the vehicle.

[0211] In one specific implementation, the vehicle is equipped with a first projection screen. In response to a first application scenario of the projection system, method 800 further includes unfolding the first projection screen.

[0212] In one specific implementation, the vehicle is equipped with a second projection screen. In response to a second application scenario of the projection system, method 800 further includes unfolding the second projection screen.

[0213] It should be noted that when the fourth image light and the second image light carry the same image information and are incident on the same projection plane, the projected image formed by the fourth image light and the projected image formed by the second image light are mirror-symmetrical or centrally symmetrical.

[0214] It should be understood that when the projection lens module includes the first lens module, the second image light includes an image light with an increased diffusion angle. The second image light and the fourth image light may form different sizes of the projected images on the same projection plane, and the shapes of the projected images may be mirror-symmetric or centrally symmetric.

[0215] Optionally, before S802, the method further includes the following S801.

[0216] S801, Obtain the application scenario of the vehicle's projection system, which includes a first application scenario and a second application scenario.

[0217] In some possible ways, the processing device acquires the application scenario of the projection system by receiving instructions from the user. For example, when a user needs to perform in-vehicle or out-of-vehicle projection, the user selects the first or second application scenario of the projection system on the interactive interface. This allows the control device to determine the current application scenario of the vehicle based on the user's instructions, thereby controlling the projection device to emit image light and controlling the corresponding in-vehicle equipment to switch between different modes.

[0218] In other possible approaches, the application scenario of the projection system can be automatically adjusted by the processing device using detectors, sensors, etc. For example, sensors or detectors are placed around the vehicle at a first location to detect whether the projection lens module is installed at that location. When a user needs to project externally, the user can fix the projection lens module at the first location, thereby causing the sensors or detectors to instruct the vehicle's control system to switch to the first application scenario, thus controlling the projection device to emit image light and controlling the corresponding in-vehicle equipment to switch between different modes.

[0219] In one possible implementation, the vehicle is currently projecting through a second application scenario and receives a user instruction to switch back to the first application scenario. The multimedia signal source of the projection system remains unchanged; only the projection mode is switched. In this implementation, method 800 further includes, in response to the projection system switching to the first application scenario, horizontally and / or vertically flipping the image light emitted from the projection device.

[0220] Specifically, when the second lens module includes at least one reflector, in response to the projection system switching to the first application scenario, the image light emitted by the projection device at the current moment is flipped in the horizontal direction.

[0221] Specifically, when the second lens module includes at least two reflectors, in response to the projection system switching to the first application scenario, the image light emitted by the projection device at the current moment is flipped in both the horizontal and vertical directions.

[0222] It should be noted that the emitted image light at the current moment includes the moment when the instruction to switch to the first application scenario is received. The beam emitted by the projection device at the current moment is the image beam under non-rear projection scenario. At the current moment, the projection system is not in the first application scenario.

[0223] It should be understood that when the vehicle is equipped with a projection lens module, in response to the projection system switching to the first application scenario, method 800 also includes moving the projection lens module along the first slide rail to a first position.

[0224] It should be understood that, when the vehicle is equipped with a first projection screen, in response to the projection system switching to the first application scenario, method 800 also includes unfolding the first projection screen.

[0225] It should be understood that, when the vehicle is equipped with a second projection screen, in response to the projection system switching to the first application scenario, method 800 also includes folding the second projection screen.

[0226] In another possible implementation, the vehicle is currently projecting through a first application scenario and receives a user instruction to switch to a second application scenario. The multimedia signal source of the projection system remains unchanged; only the projection mode is switched. In this implementation, method 800 further includes, in response to the projection system switching to the second application scenario, horizontally and / or vertically flipping the image light emitted from the projection device.

[0227] It should be understood that, when the vehicle is equipped with a projection lens module, in response to the projection system switching to the second application scenario, method 800 further includes moving the projection lens module along the first slide rail to a second position, which is different from the first position. When the projection lens module is in the second position, it cannot receive the light beam emitted by the projection device.

[0228] It should be understood that, when the vehicle is equipped with a first projection screen, in response to the projection system switching to a second application scenario, method 800 also includes folding the first projection screen.

[0229] It should be understood that, when the vehicle is equipped with a second projection screen, in response to the projection system switching to a second application scenario, method 800 also includes unfolding the second projection screen.

[0230] It should be noted that when the projection system switches to the second application scenario, method 800 may also include the same steps as when switching to the first application scenario. For the sake of brevity, this application will not repeat them here.

[0231] Figure 9 shows a schematic diagram of the structure of a control device provided in an embodiment of this application.

[0232] The control device 1000 shown in the figure may include a transceiver unit 1010 and a processing unit 1020. The transceiver unit 1010 can be used to implement corresponding communication functions. The transceiver unit 1010 may also be referred to as a communication interface or communication unit. The processing unit 1020 can be used to determine and generate information. Optionally, the transceiver unit 1010 may include a receiving unit and a sending unit, whereby the receiving unit is used to implement the function of receiving data and the sending unit is used to implement the function of sending data.

[0233] Optionally, the control device 1000 may further include a storage unit, which can be used to store instructions and / or data, and the processing unit 1020 can read the instructions and / or data in the storage unit to enable the device to implement the aforementioned method embodiments.

[0234] The control device 1000 can be the control device in the above method embodiments, or it can be a chip used to implement the functions of the control device in the above method embodiments. It should be understood that the control device 1000 can correspond to the drive module or control module or control device in the implementation described in this application.

[0235] In one possible design, the processing unit 1020 is used to control the image mode of the image light emitted by the projection device according to the application scenario of the projection module. The processing unit 1020 is also used to determine the application scenario based on user instructions or sensor information. The transceiver unit 1010 can be used to acquire image information or video stream information. The transceiver unit 1010 can also be used to acquire user information commands, sensor data output by sensors, etc.

[0236] It should be understood that the control device 1000 here is embodied in the form of a functional unit. The term "unit" here may refer to application-specific integrated circuits (ASICs), electronic circuits, processors (e.g., shared processors, proprietary processors, or group processors) and memory for executing one or more software or firmware programs, combined logic circuits, and / or other suitable components that support the described functions.

[0237] In addition, the transceiver unit 1010 may also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit 1020 may be a processing circuit.

[0238] Figure 10 shows a schematic diagram of another control device provided in an embodiment of this application.

[0239] The control device 2000 shown in the figure may include a processor 2010.

[0240] Optionally, the device 2000 further includes a transceiver 2020 for receiving and / or transmitting signals. For example, the processor 2010 controls the transceiver 2020 to receive and / or transmit signals. Optionally, the transceiver 2020 may include a receiver for receiving signals and a transmitter for transmitting signals.

[0241] The processor 2010 may be coupled to the memory 2030, which is used to store computer programs or instructions and / or data. The processor 2010 is used to execute the computer programs or instructions stored in the memory 2030, or to read the data stored in the memory 2030, in order to perform the methods in the above method embodiments.

[0242] Optionally, there may be one or more processors 2010.

[0243] Optionally, the memory 2030 may be one or more.

[0244] Alternatively, the memory 2030 can be integrated with the processor 2010, or it can be set up separately.

[0245] As an example, processor 2010 may have the functions of processing unit 1020 shown in FIG9, memory 2030 may have the functions of storage unit, and transceiver 2020 may have the functions of transceiver unit 1010 shown in FIG9.

[0246] For example, the control device 2000 can be used to implement the operations performed by the control device, control module, or drive module in the various method embodiments described above.

[0247] It should be understood that the specific process by which each transceiver and processor performs the above-mentioned corresponding steps has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0248] This application also provides a processor for executing computer programs or instructions stored in a memory, or reading data / signaling stored in a memory, to perform the methods in the above-described method embodiments. Optionally, there may be one or more processors.

[0249] This application also provides a chip, including a processor and a communication interface. The processor reads instructions stored in the memory through the communication interface and executes the methods provided in the above embodiments.

[0250] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods executed by a control device or control module in the above-described method embodiments.

[0251] For example, when the computer program is executed by a computer, it enables the computer to implement the methods executed by the control device or control module in the various embodiments of the above methods.

[0252] This application also provides a computer program product comprising instructions which, when executed by a computer, implement the methods performed by the control device or control module in the above-described method embodiments.

[0253] This application also provides a cockpit system, including a seat and a projection system as described above. The seat is for a user to sit on.

[0254] This application also provides a vehicle, including a projection system or cockpit system as described above, and a vehicle body, wherein the projection system or cockpit system is mounted on the vehicle body.

[0255] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0256] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0257] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0258] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0259] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A projection system, characterized in that, Applied to vehicles, including: A projection device is installed inside the vehicle body to emit a first image light, which is a beam of light carrying image information. The projection lens module is disposed on the side of the projection device from which light is emitted. It is used to change the transmission direction of the first image light to form a second image light, so that the second image light is transmitted to the rear of the vehicle or the side window of the vehicle.

2. The system according to claim 1, characterized in that, The projection lens module is also used to change the projection ratio of the projection device.

3. The system according to claim 1 or 2, characterized in that, The projection lens module includes a first lens module and a second lens module, wherein... A first lens module is disposed between the projection device and the second lens module, and is used to modulate the diffusion angle of the first image light; The second lens module is used to receive the modulated first image light and reflect it to form the second image light.

4. The system according to claim 3, characterized in that, The second lens module includes a first reflector, which receives and reflects the modulated first image light to form the second image light. The first reflector forms a first angle with the vertical plane, and the first angle is less than or equal to 20 degrees.

5. The system according to claim 3, characterized in that, The second lens module includes a first reflector and a second reflector, wherein, The first reflector is used to receive and reflect the modulated first image light to form the third image light; The second reflector is used to receive and reflect the third image light to form the second image light; A second angle is formed between the first reflector and the second reflector, and the second angle is greater than or equal to 90 degrees.

6. The system according to any one of claims 1 to 5, characterized in that, The vehicle has a trunk opening at the rear of its body, and the projection lens module is used to emit the second image light from the trunk opening.

7. The system according to any one of claims 1 to 6, characterized in that, Along the direction of gravity, the upper edge of the second image light is lower than the lower edge of the projection device and / or the first lens module, and the lower edge of the second image light is higher than the upper edge of the lower edge of the trunk opening of the vehicle.

8. The system according to any one of claims 1 to 7, characterized in that, Also includes: A first projection screen is disposed in the rear space of the vehicle to receive the second image light and transmit it to form a first image.

9. The system according to claim 4, characterized in that, Also includes: The first control module is used to control the size of the first included angle.

10. The system according to claim 5, characterized in that, Also includes: The second control module is used to control the size of the third included angle, which includes the included angle formed between the second reflector and the vertical plane.

11. The system according to any one of claims 1 to 10, characterized in that, Also includes: A first drive module is used to drive the projection lens module to move along a first slide rail to a first position, so that the projection lens module receives the first image light, and the first slide rail is disposed on the roof of the vehicle.

12. The system according to any one of claims 8 to 11, characterized in that, Also includes: The second drive module is used to drive the first projection screen to rotate around a first direction. The first projection screen is disposed inside the trunk lid of the vehicle or on the roof of the trunk of the vehicle.

13. The system according to any one of claims 8 to 12, characterized in that, The trunk opening has a first fixing point and a second fixing point on its edge to fix the lower edge of the first projection screen, so that when the first projection screen is unfolded, it forms a fourth angle with the vertical plane, and the fourth angle is greater than or equal to 0 degrees.

14. The system according to any one of claims 1 to 13, characterized in that, Also includes: A second projection screen is positioned on the side of the projection device from which light is emitted; When the second projection screen receives the light from the first image, a second image is formed, and the second image and the first image are mirror-symmetrical or centrally symmetrical.

15. A method for controlling a projection system, applied to a vehicle projection system, characterized in that, The projection system includes a projection device and a projection lens module, and the method includes: In response to a first application scenario of the projection system, the projection device emits a first image light, wherein the projection lens module is disposed on the side of the projection device emitting light, and the projection lens module is used to change the transmission direction of the first image light to form a second image light, so that the second image light is transmitted to the rear of the vehicle or the side window of the vehicle. In response to a second application scenario of the projection system, the projection device emits a fourth image light.

16. The method according to claim 15, characterized in that, The fourth image light has a different transmission direction than the second image light. When the fourth image light and the second image light are incident on the same projection plane, the projected image formed by the fourth image light and the projected image formed by the second image light are mirror-symmetrical or centrally symmetrical.

17. The method according to claim 15 or 16, characterized in that, In response to the projection system switching to the first application scenario, the method further includes acquiring the first image light; The first image light includes the image light after horizontal and / or vertical flipping of the image light emitted by the projection device at the current moment.

18. The method according to claim 15 or 16, characterized in that, The method further includes: In response to the projection lens module being in the first position, the projection system is turned on or switched to the first application scenario; The first position is located on the roof of the vehicle, and is used to enable the projection lens module to receive the first image light.

19. The method according to any one of claims 15 to 18, characterized in that, In response to the first application scenario of the projection system, the method further includes: The projection lens module is controlled to move along the first slide rail to the first position, and the first slide rail is set on the roof of the vehicle.

20. The method according to any one of claims 15 to 19, characterized in that, In response to the first application scenario of the projection system, the method further includes: Control the size of the first included angle so that the second image light is emitted from the trunk opening of the vehicle; Wherein, the first included angle includes the included angle formed between the first reflector in the projection lens module and the vertical plane, the first reflector is used to receive the first image light and reflect it to form the second image light, and the first included angle is less than or equal to 20 degrees.

21. The method according to any one of claims 15 to 20, characterized in that, In response to the first application scenario of the projection system, the method further includes: Control the size of the third included angle so that the second image light is emitted from the trunk opening of the vehicle; The third included angle includes the included angle formed between the second reflector in the projection lens module and the vertical plane. The first reflector of the projection lens module is used to receive the first image light and reflect it to form the third image light. The second reflector is used to receive the third image light and reflect it to form the second image light.

22. The method according to any one of claims 15 to 21, characterized in that, In response to the first application scenario of the projection system, the method further includes: The first projection screen is driven to unfold, so that the first projection screen receives the second image light and transmits it to form the first image.

23. A cockpit system, characterized in that, The system includes a projection system and a seat as described in any one of claims 1 to 14, the seat being used for a user to sit on.

24. A means of transportation, characterized in that, This includes a projection system as described in any one of claims 1 to 14 or a cockpit system as described in claim 23.

25. A control device, characterized in that, Includes a processor, said processor being configured to, by executing computer programs or instructions, or by executing logic circuits, The control device is made to perform the method of any one of claims 15 to 22.

26. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions, which, when executed on a computer... This causes the method of any one of claims 15 to 22 to be performed.

27. A computer program product, characterized in that, Includes instructions that, when executed on a computer, This causes the method of any one of claims 15 to 22 to be performed.

28. A chip system, characterized in that, The chip system includes a processor, a memory, and input / output ports. The memory stores computer programs; the processor executes the computer programs stored in the memory. So that the processor performs the method as described in any one of claims 15 to 22.

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