3D projection method and system for vehicle and corresponding vehicle

Abstract

The invention provides a 3D projection method and system for a vehicle, and the system comprises a projector which is used for projecting light onto a projection surface in the vehicle through a projection lens; the processor is in communication connection with the projector and is used for controlling light projected by the projector; the 3D diaphragm is arranged on the projection surface and is provided with a first strip-shaped grating array and a second strip-shaped grating array which are arranged at an interval; wherein the 3D diaphragm can control the light reflection angle of the projected light, so that the first strip-shaped grating array and the second strip-shaped grating array reflect different parts of the projected light to the left eye and the right eye of a user respectively. The invention further provides a vehicle supporting the naked eye 3D projection function.

Description

Technical Field

[0001] This invention relates to the field of projection technology, and more specifically, to a 3D projection method and system for vehicles, and a corresponding vehicle. Background Technology

[0002] In recent years, with the development of 3D display technology, naked-eye 3D displays have been widely used in various fields. The principle is generally to split the image displayed on the display by means of, for example, a cylindrical lens. The lens refracts the light and refracts different display contents to different places in space. When it reaches the human eye, the displayed contents are separated, and the left and right eyes of the human receive two images with parallax, thus producing a 3D stereoscopic effect.

[0003] However, current glasses-free 3D technology is generally used in LCD displays and has not yet been applied in the field of projection displays. If existing glasses-free 3D technology used in displays is directly applied to projection displays, phenomena such as diffuse reflection of projected light may lead to poor glasses-free 3D effects, making it unsuitable.

[0004] In addition, with the development of automotive intelligence and automation, there is a desire to present 3D display effects in vehicles. However, currently, users still need to wear additional AR devices, and naked-eye 3D projection in the car cannot be achieved.

[0005] Therefore, it is desirable to provide a 3D projection solution for vehicles that can achieve naked-eye 3D projection inside the vehicle at a lower cost and with greater flexibility, thereby further improving the user experience. Summary of the Invention

[0006] This summary is provided to introduce, in a simplified form, some concepts that will be further described in the following detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0007] To address the above problems, according to a first aspect of the present invention, a 3D projection system for a vehicle is provided, the system comprising: a projector for projecting light onto a projection surface inside the vehicle via a projection lens; a processor communicatively connected to the projector for controlling the light projected by the projector; and a 3D film disposed on the projection surface, the 3D film having a first stripe grating array and a second stripe grating array arranged at intervals, wherein the 3D film is capable of controlling the light reflection angle of the projected light such that the first stripe grating array and the second stripe grating array respectively reflect different portions of the projected light to the user's left and right eyes.

[0008] In the technical solution of this invention embodiment, a 3D film (using, for example, a waveform structure) for vehicles is designed, which can be installed, for example, on a projection surface (e.g., interior trim) to control the light reflection angle, so that the left and right eyes obtain different projected images, thereby realizing naked-eye 3D technology in the vehicle and further improving the user experience.

[0009] According to one embodiment of the present invention, the 3D film has a waveform structure.

[0010] According to a further embodiment of the present invention, the processor is further configured to: acquire the user's eye position; and adjust the light projected by the projector based on the acquired eye position.

[0011] According to a further embodiment of the present invention, the system further includes: a movable support disposed behind the 3D film, wherein the movable support is configured to adjust the physical position of the 3D film according to the position of the human eye.

[0012] According to a further embodiment of the present invention, the 3D film is disposed in front of the front passenger seat of the vehicle, in front of the rear seats of the vehicle or overhead, on the dashboard of the vehicle, or integrated into the HUD system of the vehicle, or in other in-vehicle locations.

[0013] According to a further embodiment of the present invention, the position of the 3D film is customized.

[0014] According to a further embodiment of the present invention, the 3D film has an imaging layer disposed behind the first strip grating array and the second strip grating array.

[0015] According to a further embodiment of the present invention, the imaging layer is at least one of an imaging screen, an imaging film, or a frosted layer.

[0016] According to a further embodiment of the present invention, the 3D film is transparent.

[0017] According to a second aspect of the present invention, a 3D projection method for a vehicle is provided, the method comprising: projecting light onto a projection surface inside the vehicle using a projection lens of a projector, wherein a 3D film is disposed on the projection surface, the 3D film having a first stripe grating array and a second stripe grating array arranged at intervals; and using the 3D film to control the light reflection angle of the projected light such that the first stripe grating array and the second stripe grating array respectively reflect different portions of the projected light to the user's left eye and right eye.

[0018] According to one embodiment of the present invention, the 3D film has a waveform structure and is transparent.

[0019] According to a further embodiment of the present invention, the method further includes: acquiring the user's eye position; and adjusting the light projected by the projector based on the acquired eye position.

[0020] According to a further embodiment of the present invention, the physical position of the 3D film can be adjusted based on the position of the human eye.

[0021] According to a further embodiment of the present invention, the 3D film is disposed in front of the front passenger seat of the vehicle, in front of the rear seats of the vehicle or overhead, on the dashboard of the vehicle, or integrated into the HUD system of the vehicle, or in other in-vehicle locations.

[0022] According to a third aspect of the present invention, a vehicle supporting 3D projection display is provided, the vehicle comprising: a 3D projection system as described in any of the preceding aspects; and an eye-tracking system communicatively connected to a processor in the 3D projection system for detecting the position of the user's eyes.

[0023] These and other features and advantages will become apparent from the following detailed description and with reference to the accompanying drawings. It should be understood that the foregoing general description and the following detailed description are illustrative only and do not limit the scope of the claims. Attached Figure Description

[0024] To gain a more detailed understanding of the manner in which the features of the present invention are described above, reference can be made to various embodiments to provide a more specific description of the above-briefly summarized aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of the invention and should not be considered as limiting its scope, as this description may allow for other equivalent and effective aspects.

[0025] Figure 1 A schematic diagram of the architecture of a 3D projection system for a vehicle according to an embodiment of the present invention is shown.

[0026] Figure 2 A schematic diagram of a 3D film for realizing naked-eye 3D projection in a vehicle is shown according to an embodiment of the present invention.

[0027] Figure 3 An example scenario of in-vehicle 3D naked-eye projection according to an embodiment of the present invention is shown.

[0028] Figure 4 An example flowchart of a 3D projection method for a vehicle according to an embodiment of the present invention is shown.

[0029] Figure 5 An exemplary vehicle supporting 3D projection display is shown according to an embodiment of the present invention. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings, and its features will become further apparent from the following detailed description. Throughout this specification, the term "vehicle" refers to any type of automobile, including but not limited to cars, vans, trucks, buses, etc. For simplicity, the invention is described in relation to "automobiles." The terms "A or B" as used in this specification mean "A and B" and "A or B," and do not imply that A and B are exclusive unless otherwise stated.

[0031] In the description of embodiments of this disclosure, "a plurality of" means two or more, unless otherwise expressly specified. The reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] Current 3D display technology uses, for example, cylindrical lenses placed in front of the display panel to allow the left and right eyes to receive two images with parallax, thus producing a stereoscopic effect. However, this is not applicable to naked-eye 3D projection.

[0033] In response, this application designs a waveform structure 3D film for vehicles, which can be applied, for example, to the interior surface of a vehicle to control the angle of light reflection, so that the left and right eyes receive different projected images, thereby realizing naked-eye 3D projection technology in the vehicle and further improving the user experience.

[0034] See Figure 1 , Figure 1 A schematic diagram of the architecture of a 3D projection system 100 for a vehicle according to an embodiment of the present invention is shown.

[0035] The system 100 may include at least a projector 102, a processor 104 communicatively connected to the projector 102, and a 3D film 106 disposed on the projection surface.

[0036] The projector 102 can project light onto a projection surface inside the vehicle (e.g., interior trim) via a projection lens. The projector 102 can be placed in any suitable location inside the vehicle.

[0037] The processor 104 can be used to control the light projected by the projector.

[0038] In some implementations, the processor 104 can obtain the user's eye position from the vehicle's eye-tracking system and adjust the light projected by the projector based on the obtained eye position, thereby avoiding problems such as ghosting and blurring in 3D projection.

[0039] A schematic diagram of 3D film 106 is shown in Figure 2 As shown, the 3D film 106 may have a first strip grating arranged at intervals ( Figure 2 The grating with shadow in the middle) and the second strip grating ( Figure 2 A grating without shadow stripes), wherein the 3D film can control the light reflection angle of the projected light so that the first and second gratings reflect different parts of the projected light (e.g., two parts of the projected image) to the user's left and right eyes respectively (as shown by...). Figure 2 The solid and dashed arrows in the text are shown respectively.

[0040] In one embodiment, the 3D film has a waveform structure (see...). Figure 2 ).

[0041] In one implementation, the 3D film can be transparent for an aesthetically pleasing effect.

[0042] Preferably, the system 100 may further include a movable support 108 disposed behind the 3D film 106, which can be used to physically adjust the position of the 3D film 106 so that the position of the 3D film is adapted to the position of the human eye, so as to avoid possible ghosting or blurring problems.

[0043] In one implementation, the 3D film may be placed in front of the front passenger seat, in front of the rear seats or overhead, on the dashboard, integrated into the vehicle's HUD system, or placed in any other suitable location within the vehicle.

[0044] In one implementation, the position of the 3D membrane can be customized.

[0045] Furthermore, the 3D film may also have an imaging layer disposed behind the first strip grating array and the second strip grating array.

[0046] In one embodiment, the imaging layer may include at least one of an imaging screen, an imaging film, or a frosted layer. Preferably, other auxiliary optical devices (e.g., polarizing modes) may also be disposed behind the imaging layer.

[0047] Further as Figure 3 As shown, Figure 3 An example scenario 300 of in-vehicle 3D naked-eye projection according to an embodiment of the present invention is shown.

[0048] In scenario 300, a 3D film is installed on the interior trim surface in front of the passenger seat. Projector 102 projects light onto the 3D film through its projection lens. The structure of the 3D film is as follows: Figure 2 As shown (i.e., having a first strip grating array and a second strip grating array arranged at intervals, in a waveform structure).

[0049] The 3D film can control the reflection angle of the projected light, so that the first and second strip grating arrays reflect two parts of the projected image to the left and right eyes of the passenger in the front seat, respectively. This allows the passenger's left and right eyes to receive different projected images. The brain then superimposes and regenerates the image information to form a stereoscopic image with depth.

[0050] In addition, a movable support is provided behind the 3D film, which can be moved up, down, left, and right to directly and physically adjust the position of the 3D film, thereby avoiding problems such as ghosting and blurring that may be caused by changes in eye position.

[0051] Of course, it is understood that the above scenario is provided only as an example, and the 3D film can also be flexibly placed in any other suitable location inside the vehicle.

[0052] Figure 4 An example flowchart of a 3D projection method 400 for a vehicle according to an embodiment of the present invention is shown.

[0053] Method 400 begins at step 402, whereby light can be projected onto a projection surface inside the vehicle using a projector's projection lens, wherein a 3D film is disposed on the projection surface, the 3D film having a first stripe grating array and a second stripe grating array arranged at intervals (e.g., ...). Figure 2 (As shown).

[0054] In step 404, a 3D film can be used to control the light reflection angle of the projected light so that the first strip grating array and the second strip grating array reflect different parts of the projected light to the user's left and right eyes, respectively.

[0055] In one embodiment, the 3D film may have a wave-like structure and may be transparent.

[0056] In one implementation, the physical position of the 3D film can be adjusted based on the position of the human eye (e.g., by a movable support positioned behind the 3D film).

[0057] In one implementation, the 3D film can be placed in front of the front passenger seat, in front of the rear seats or overhead, on the dashboard, integrated into the vehicle's HUD system, or placed in other suitable locations within the vehicle.

[0058] Preferably, the 3D membrane is small in size and its position can be customized, thus making the placement of the 3D membrane more flexible.

[0059] In addition, the 3D film may also have an imaging layer disposed behind the first strip grating array and the second strip grating array.

[0060] In some examples, the imaging layer can be at least one of an imaging screen, an imaging film, or a matte layer.

[0061] In the optional steps, the occupant's eye position can be obtained, and the projected light can be adjusted directly on the projector based on the eye position, thus avoiding problems such as ghosting caused by changes in the eye position.

[0062] Therefore, by designing this 3D film with a waveform structure, it can be directly installed on the projection surface inside the vehicle (e.g., interior trim) to control the reflection angle of the projected light, so that part of the image is reflected to the left eye and another part is reflected to the right eye, thus allowing the human eye to obtain an image with parallax, thereby achieving a naked-eye 3D display effect. This structure has a lower cost, smaller size, and more flexible setup, making it suitable for installation and use inside vehicles.

[0063] Figure 5 An exemplary vehicle 500 supporting 3D projection display is shown according to an embodiment of the present invention. The vehicle 500 may include various software and hardware components connected via a bus 510.

[0064] For example, vehicle 500 may include at least the following: Figure 1 The 3D projection system 100 shown may include a projector for projecting light onto a projection surface inside a vehicle through a projection lens; a processor communicatively connected to the projector for controlling the light projected by the projector; and a 3D film disposed on the projection surface, the 3D film having a first stripe grating array and a second stripe grating array arranged at intervals, wherein the 3D film is capable of controlling the light reflection angle of the projected light so that the first stripe grating array and the second stripe grating array reflect different portions of the projected light to the user's left and right eyes, respectively.

[0065] The vehicle 500 may also include an eye-tracking system 502 that is communicatively connected to the processor in the 3D projection system 100. This system can detect the user's eye position and the processor can further control the projection light based on the acquired eye position to ensure that different parts of the projected image are accurately reflected to the user's left and right eyes, thereby avoiding problems such as ghosting and blurring caused by changes in the user's eye position.

[0066] In addition, vehicle 500 may also include sensor system 504, communication system 506, and positioning system 508, etc.

[0067] Sensor system 504 can be used to acquire sensor data from inside or outside the vehicle. Sensor system 504 may include any suitable number of accelerometers, gyroscopes, and / or magnetometers. In some embodiments, sensor system 504 may be part of an inertial measurement unit of vehicle 500. Sensor system 504 may be used to provide and / or verify motion and orientation information, monitor wheel and drivetrain performance, and / or measure the amplitude and frequency of oscillations of vehicle 500 and / or components of vehicle 500. As an example, an accelerometer may measure vibrations of vehicle 500, such as movement or mechanical oscillations about the balanced positioning of components of vehicle 500. In one embodiment, the gyroscope and magnetometer of sensor system 504 may be used to measure the rotational state of the vehicle and its orientation relative to magnetic north, respectively, and to measure and calibrate estimates and / or models of turning radius at current speeds and / or maneuverability measurements at current speeds (especially when used in conjunction with measurements from other external and internal sensors, such as speed sensors, wheel tick sensors, and / or odometer measurements). Additionally, sensor system 504 may also include radar, LIDAR, vision sensors, etc. For example, LIDAR can provide a means of more definitively detecting the distance (and orientation) of an object (especially an object of unknown size and shape). LIDAR measurements can also be used to estimate travel speed, vector direction, relative position, and stopping distance by providing accurate distance measurements and incremental distance measurements.

[0068] Communication system 506 can be configured to communicate via a short-range wireless communication protocol (e.g., Bluetooth Low Energy Data messages and elements may be transmitted and received via (etc.) and / or via local area networks and / or wide area networks, and / or via cellular networks, and / or via any suitable wireless network. It should be understood that these are merely examples of networks that vehicle 500 may utilize on a wireless link, and the claimed subject matter is not limited in this respect. In one embodiment, communication system 506 may include various combinations of WAN, WLAN, and / or PAN transceivers. In one embodiment, communication system 506 may also include a Bluetooth transceiver, a ZigBee transceiver, or other PAN transceivers.

[0069] Positioning system 508 can be used to acquire vehicle location data. In some cases, positioning system 508 may be implemented as a GNSS receiver, which may be configured to receive and digitally process signals from navigation satellites (and / or other vehicles) to provide the receiver's location, speed, and time. The GNSS receiver may include hardware and / or software components. In one embodiment, GNSS signals received by the GNSS receiver from GNSS satellites are used by vehicle 500 for location determination and / or for determining GNSS signal parameters and demodulated data. In one embodiment, signals received by a radio transceiver are used for location determination, either alone or in combination with GNSS signals received by the GNSS receiver.

[0070] The various illustrative blocks and modules described herein can be implemented or executed using a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but in alternatives, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, or any other such configuration).

[0071] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations fall within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Features implementing the functions can also be physically located in various locations, including being distributed such that different parts of the function are implemented at different physical locations.

[0072] The foregoing description includes examples of various aspects of the claimed subject matter. It is certainly impossible to describe every conceivable combination of components or methods for the purpose of depicting the claimed subject matter, but those skilled in the art will recognize that many further combinations and arrangements of the claimed subject matter are possible. Thus, the disclosed subject matter is intended to cover all such changes, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. A 3D projection system for a vehicle, the system comprising: a projector for projecting light rays onto a projection surface inside the vehicle through a projection lens; a processor communicatively connected with the projector for controlling the light rays projected by the projector; and a 3D film disposed on the projection surface, the 3D film having a first array of strip gratings and a second array of strip gratings arranged in a spaced apart manner, wherein the 3D film is capable of controlling the light ray reflection angles of the projected light rays such that the first array of strip gratings and the second array of strip gratings reflect different portions of the projected light rays to a user's left eye and right eye respectively. The 3D film has a wave shape structure.

2. The system of claim 1, wherein, The processor is further configured to:

3. The system of claim 1, wherein, obtain a human eye position of the user; and adjust the light rays projected by the projector based on the obtained human eye position. The system further comprises:

4. The system of claim 1, wherein, a movable bracket disposed behind the 3D film, wherein the movable bracket is configured to adjust the physical position of the 3D film according to the human eye position. The 3D film is disposed in front of a front passenger seat of the vehicle, in front of a rear seat of the vehicle or a head top position, on a dashboard of the vehicle, or integrated in a HUD system of the vehicle, or other in-vehicle positions.

5. The system of claim 1, wherein, The position of the 3D film is personalized.

6. The system of claim 1, wherein, The 3D film has an imaging layer disposed behind the first array of strip gratings and the second array of strip gratings.

7. The system of claim 1, wherein, The imaging layer is at least one of an imaging screen, an imaging sticker, or a frosted layer.

8. The system of claim 7, wherein, The 3D film is transparent.

9. The system of claim 1, wherein, 10.A 3D projection method for a vehicle, the method comprising: projecting light rays onto a projection surface inside the vehicle using a projection lens of a projector, wherein a 3D film is disposed on the projection surface, the 3D film having a first array of strip gratings and a second array of strip gratings arranged in a spaced apart manner; and controlling light ray reflection angles of the projected light rays using the 3D film such that the first array of strip gratings and the second array of strip gratings reflect different portions of the projected light rays to a user's left eye and right eye respectively. The 3D film has a wave shape structure and is transparent.

11. The method of claim 10, wherein, The method further comprises:

12. The method of claim 10, wherein, obtaining a human eye position of the user; and adjusting the light rays projected by the projector based on the obtained human eye position. The physical position of the 3D film is adjustable based on the human eye position.

13. The method of claim 10, wherein, The 3D film is disposed in front of a front passenger seat of the vehicle, in front of a rear seat of the vehicle or a head top position, on a dashboard of the vehicle, or integrated in a HUD system of the vehicle, or other in-vehicle positions.

14. The method of claim 10, wherein, 15.A vehicle supporting 3D projection display, the vehicle comprising: the 3D projection system of any one of claims 1-9; and an eye tracking system communicatively connected with the processor in the 3D projection system for detecting a human eye position of the user. ​ ​

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