CN119148377A - Three-dimensional display device, three-dimensional projection light source and vehicle - Google Patents
Three-dimensional display device, three-dimensional projection light source and vehicle Download PDFInfo
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- G—PHYSICS
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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- G02B30/33—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving directional light or back-light sources
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- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
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Abstract
The embodiment of the application discloses a three-dimensional display device, a three-dimensional projection light source and a vehicle, which are used for reducing the risk of sunlight backflow, improving the imaging definition of the three-dimensional display device and prolonging the service life of the three-dimensional display device. The three-dimensional display device comprises a projector, a three-dimensional optical module and a curved mirror, wherein the projector projects imaging light to the three-dimensional optical module firstly, the three-dimensional optical module converges left eye imaging light and right eye imaging light according to the imaging light to the curved mirror, and the curved mirror is used for reflecting the left eye imaging light and the right eye imaging light again. The left-eye imaging light and the right-eye imaging light reflected by the curved mirror are respectively projected to the left eye and the right eye to form a three-dimensional virtual image.
Description
Technical Field
The present application relates to the field of image display, and in particular, to a three-dimensional display device, a three-dimensional projection light source, and a vehicle.
Background
An augmented reality head up display (AR-HUD) having a three-dimensional (three dimensional, 3D) display function is intended to display driving related information of a vehicle in a virtual image manner in front of the vehicle. And the virtual image can be overlapped with road condition scenes (such as roads, buildings, pedestrians and the like) to achieve a 3D display effect.
The AR-HUD having a 3D display function includes a liquid crystal display screen and an imaging optical path for projecting imaging light emitted from the liquid crystal display screen into a human eye of a driver and forming a 3D image displayed in front of a vehicle in a brain of the driver.
But due to the reversibility of the imaging light path, sunlight can flow backward into the liquid crystal display screen through the imaging light path. The liquid crystal display screen can generate bright spots on the liquid crystal display screen due to light convergence, so that imaging definition is reduced. The liquid crystal display screen can cause the too high temperature because of light gathers, probably causes the liquid crystal display screen to burn down even.
Disclosure of Invention
The embodiment of the application provides a three-dimensional display device, a three-dimensional projection light source and a vehicle, which can reduce the risk of sunlight backflow, thereby improving the imaging definition of the three-dimensional display device and prolonging the service life of the three-dimensional display device.
In a first aspect, an embodiment of the present application provides a three-dimensional display device, including a projector, a three-dimensional optical module, and a curved mirror, where the projector is configured to project imaging light to the three-dimensional optical module, the three-dimensional optical module is configured to collect left-eye imaging light and right-eye imaging light according to the imaging light to the curved mirror, where the left-eye imaging light and the right-eye imaging light are obtained by diffusing and splitting the imaging light, the curved mirror is configured to reflect the left-eye imaging light and the right-eye imaging light, a transmission direction of the left-eye imaging light reflected by the curved mirror is different from a transmission direction of the right-eye imaging light, and the left-eye imaging light reflected by the curved mirror is projected to a left eye of a driver and the right-eye imaging light reflected by the curved mirror is projected to a right eye of the driver. Thus, the left eye imaging light and the right eye imaging light are synthesized in the brain of the driver to form a three-dimensional virtual image.
By adopting the scheme, even if light outside the vehicle mainly irradiates on the three-dimensional optical module due to reversibility of the light path, heat generated by the light does not act on the projector or is low in heat acting on the projector, and bright spots cannot be generated on the projector due to the fact that the light mainly irradiates on the three-dimensional optical module, so that imaging definition of imaging light beams emitted by the projector is effectively improved. And the temperature of the projector can not be greatly increased by light, so that the condition that the projector is burnt out due to overhigh temperature is effectively avoided.
Based on the first aspect, in an optional implementation manner, the three-dimensional optical module comprises a diffusion screen, a lens and a light splitting device, distances among the diffusion screen, the lens and the light splitting device and the projector are sequentially increased, the diffusion screen is used for diffusing the received imaging light to the lens, the lens is used for converging the received imaging light to the light splitting device, and the light splitting device is used for splitting the received imaging light into the left eye imaging light and the right eye imaging light and projecting the left eye imaging light and the right eye imaging light to the curved mirror.
By adopting the three-dimensional optical module, successful imaging of the three-dimensional virtual image can be ensured.
Based on the first aspect, in an optional implementation manner, the three-dimensional optical module comprises a lens, a light splitting device and a diffusion screen, distances among the lens, the light splitting device and the diffusion screen and the projector are sequentially increased, the lens is used for converging the received imaging light to the light splitting device, the light splitting device is used for splitting the received imaging light into left eye imaging light and right eye imaging light, the left eye imaging light and the right eye imaging light are projected to the diffusion screen, and the diffusion screen is used for diffusing the received left eye imaging light and right eye imaging light to the curved mirror respectively.
By adopting the three-dimensional optical module, successful imaging of the three-dimensional virtual image can be ensured.
Based on the first aspect, in an optional implementation manner, the three-dimensional optical module comprises a lens, a diffusion screen and a light splitting device, distances among the lens, the diffusion screen and the light splitting device and the projector are sequentially increased, the lens is used for converging the received imaging light to the diffusion screen, the diffusion screen is used for diffusing the received imaging light to the light splitting device, and the light splitting device is used for splitting the received imaging light into the left eye imaging light and the right eye imaging light and projecting the left eye imaging light and the right eye imaging light to the curved surface screen.
By adopting the three-dimensional optical module, successful imaging of the three-dimensional virtual image can be ensured.
Based on the first aspect, in an optional implementation manner, the three-dimensional optical module includes three optical devices, the three optical devices include the lens, the diffusion screen and the light splitting device, and a light-transmitting filling layer is arranged between any two adjacent optical devices in the three optical devices.
By adopting the scheme, the filling layer is formed by depositing optical glue, and the three-dimensional optical module can be ensured to be an integral device through the filling layer. In the actual use process, the position of the optical device (at least one of the lens, the diffusion screen and the optical splitting device) is not shifted, so that the optical path is not changed. Then, the three-dimensional optical module which is an integral device can successfully ensure that left eye imaging light and right eye imaging light emitted from the three-dimensional optical module are projected to the left eye and the right eye, and ensure that a three-dimensional virtual image can be successfully imaged.
Based on the first aspect, in an optional implementation manner, a horizontal diffusion angle of the diffusion screen is smaller than a vertical diffusion angle, where the horizontal diffusion angle of the diffusion screen is an angle between incident light and emergent light along a horizontal plane included angle, the vertical diffusion angle of the diffusion screen is an angle between the incident light and the emergent light along a vertical plane included angle, the incident light is light incident to the diffusion screen, and the emergent light is light emergent from the diffusion screen.
By adopting the scheme, the crosstalk caused by the light splitting of the light splitting device by the diffusion screen is effectively reduced, and the definition of the three-dimensional virtual image is improved. And the diffusion screen has vertical diffusion angles to the imaging light along the vertical plane, so that when the eyes of a driver move along the vertical plane, the imaging light of the left eye and the imaging light of the right eye can be ensured to be successfully projected to the left eye and the right eye.
Based on the first aspect, in an optional implementation manner, a horizontal diffusion angle of the diffusion screen is zero degrees.
By adopting the scheme, under the condition that the horizontal diffusion angle of the diffusion screen is zero, crosstalk caused by light splitting of the light splitting device by the diffusion screen can be avoided, and the definition of the three-dimensional virtual image is improved.
Based on the first aspect, in an optional implementation manner, the three-dimensional optical module comprises a lens, wherein the position of a left eye and the position of a right eye are related to at least one of a first distance, a second distance and a focal length of the lens, the left eye is used for receiving the left eye imaging light, the right eye is used for receiving the right eye imaging light, the first distance is a distance between the projector lens and the three-dimensional optical module, and the second distance is a distance between a connecting line between the left eye and the right eye and the three-dimensional optical module.
By adopting the scheme, the successful imaging of the three-dimensional virtual image is effectively ensured under the condition that the position of the left eye and the position of the right eye are related to at least one of the first distance, the second distance and the focal length of the lens.
Based on the first aspect, in an optional implementation manner, the three-dimensional display device satisfies a condition 1, where the condition 1 isWherein d 0 is the distance between the light source of the projector and the projector lens. The first distance d 1 is the distance between the projector lens and the three-dimensional optical module. f 0 is the focal length of the projector lens.
By adopting the scheme, under the condition that the distance d 0 between the light source of the projector and the projector lens, the first distance d 1 between the projector lens and the three-dimensional optical module and the focal length f 0 of the projector lens meet the condition 1, the successful imaging of the three-dimensional virtual image is effectively ensured.
Based on the first aspect, in an optional implementation manner, the three-dimensional optical module includes a lens, where a focal length of the lens is related to at least one of a first distance and a second distance, where the first distance is a distance between the projector lens and the three-dimensional optical module, and the second distance is a distance between a line between the left eye and the right eye and the three-dimensional optical module.
By adopting the method, the successful imaging of the three-dimensional virtual image is effectively ensured under the condition that the focal length of the lens is related to at least one of the first distance and the second distance.
Based on the first aspect, in an optional implementation manner, the three-dimensional display device satisfies a condition 2, where the condition 2 isF 1 is the focal length of the lens.
By adopting the scheme, under the condition that the first distance, the second distance and the focal length f 1 of the lens meet the condition 2, the successful imaging of the three-dimensional virtual image is effectively ensured.
In an optional implementation manner, the three-dimensional optical module includes a light splitting device, wherein a focal length of the light splitting device is related to at least one of a second distance, a width of a sub-module of the light splitting device in a horizontal plane, and a width of a target area in the horizontal plane, the sub-module is configured to split a beam of the imaging light into one of the left eye imaging light and one of the right eye imaging light, and a left eye for receiving the left eye imaging light and a right eye for receiving the right eye imaging light move in the target area.
According to the method, when the focal length of the light splitting device is related to at least one of the second distance, the width of the submodule of the light splitting device in the horizontal plane and the width of the target area in the horizontal plane, when the eyes of a driver move in the target area, left eye imaging light can be guaranteed to be projected to the left eye, and right eye imaging light can be guaranteed to be projected to the right eye.
Based on the first aspect, in an optional implementation manner, the three-dimensional display device satisfies a condition 3, where the condition 3 is: wherein f is the focal length of the light splitting device, d 2 is the second distance, p is the width of the sub-module of the light splitting device in the horizontal plane XY, and W * is the width of the target area in the horizontal plane XY.
By adopting the scheme, under the condition that the focal length f of the light splitting device, the second distance d 2, the width p of the sub-module of the light splitting device in the horizontal plane XY and the width W * of the target area in the horizontal plane XY meet the condition 3, the three-dimensional virtual image can be effectively ensured to be successfully imaged.
In an optional implementation manner based on the first aspect, the projector is configured to modulate driving related information into imaging light. The driving related information is one or more of advanced driving assistance system ADAS information, main data (oil consumption, engine rotation speed, temperature and the like) on a vehicle instrument panel, vehicle speed information, steering wheel rotation angle information, navigation information and vehicle body posture data.
Based on the implementation mode, the three-dimensional virtual image is used for displaying driving related information, so that driving safety, driving related information display efficiency and definition are improved.
The application provides a three-dimensional projection light source, which comprises a projector and a three-dimensional optical module, wherein the projector is used for projecting imaging light to the three-dimensional optical module, the three-dimensional optical module is used for converging the imaging light and emitting left eye imaging light and right eye imaging light, the left eye imaging light and the right eye imaging light are obtained by diffusing and splitting the imaging light, the transmission direction of the left eye imaging light is different from the transmission direction of the right eye imaging light, and the left eye imaging light and the right eye imaging light are used for forming three-dimensional virtual images.
For an explanation of the beneficial effects of this aspect, please refer to the first aspect, and detailed descriptions thereof are omitted.
Based on the second aspect, in an optional implementation manner, the three-dimensional optical module includes a diffusion screen, a lens and a light splitting device, and distances among the diffusion screen, the lens and the light splitting device and the projector are sequentially increased, the diffusion screen is used for diffusing the received imaging light to the lens, the lens is used for converging the received imaging light to the light splitting device, and the light splitting device is used for splitting the received imaging light into the left eye imaging light and the right eye imaging light.
Based on the second aspect, in an optional implementation manner, the three-dimensional optical module comprises a lens, a light splitting device and a diffusion screen, distances among the lens, the light splitting device and the diffusion screen and the projector are sequentially increased, the lens is used for converging the received imaging light to the light splitting device, the light splitting device is used for splitting the received imaging light into the left eye imaging light and the right eye imaging light, the left eye imaging light and the right eye imaging light are projected to the diffusion screen, and the diffusion screen is used for diffusing the received left eye imaging light and the right eye imaging light respectively.
Based on the second aspect, in an optional implementation manner, the three-dimensional optical module includes a lens, a diffusion screen and a light splitting device, and distances among the lens, the diffusion screen and the light splitting device and the projector are sequentially increased, the lens is used for converging the received imaging light to the diffusion screen, the diffusion screen is used for diffusing the received imaging light to the light splitting device, and the light splitting device is used for splitting the received imaging light into the left eye imaging light and the right eye imaging light.
In a third aspect, the application provides a vehicle comprising a windscreen for reflecting the left eye imaging light and the right eye imaging light from the curved mirror, the transmission direction of the left eye imaging light reflected by the windscreen being different from the transmission direction of the right eye imaging light, and the left eye imaging light and the right eye imaging light reflected by the windscreen being used to form a three-dimensional virtual image, and a three-dimensional display device as described in any of the first aspects above.
Drawings
Fig. 1 is a diagram showing a structure example of a three-dimensional display device according to the present application;
FIG. 2 is a diagram showing a partial structure of an embodiment of a three-dimensional display device according to the present application;
FIG. 3 is a structural example diagram of a first embodiment of the three-dimensional optical module shown in FIG. 2;
FIG. 4 is a diagram illustrating a spectroscopic example of a spectroscopic module according to the present application;
FIG. 5 is a diagram showing a second embodiment of a structure of the three-dimensional optical module shown in FIG. 2;
FIG. 6 is a structural example diagram of a third embodiment of the three-dimensional optical module shown in FIG. 2;
FIG. 7 is an exemplary image of a three-dimensional optical module provided by the present application;
Fig. 8 is a first exemplary diagram of a three-dimensional display device forming a 3D virtual image in the case where the human eye moves;
fig. 9 is a second exemplary diagram of a three-dimensional display device forming a 3D virtual image in the case where the human eye moves;
fig. 10 is a schematic diagram of a circuit connection of the three-dimensional display device according to the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
The embodiment of the application provides a three-dimensional display device. The three-dimensional display device is used as the AR-HUD with the 3D display function, and can reduce the risk of sunlight backflow, so that the imaging definition of the three-dimensional display device is improved, and the service life of the three-dimensional display device is prolonged. In this embodiment, the three-dimensional display device is applied to the field of vehicle-mounted technology, and it should be clear that the three-dimensional display device shown in this embodiment can be applied to any vehicle, for example, the vehicle may be a known vehicle such as an automobile, an airplane, a ship, a rocket, or the like, and may also be a new vehicle in the future. The vehicle may be an electric vehicle, a fuel vehicle, or a hybrid vehicle, for example, a pure electric vehicle, an extended range electric vehicle, a hybrid electric vehicle, a fuel cell vehicle, a new energy vehicle, etc., which is not particularly limited in the present application.
Fig. 1 is a diagram illustrating a structure of a three-dimensional display device according to the present application. The three-dimensional display device shown in this embodiment includes a projector 101, a three-dimensional optical module 102, and a curved mirror 103.
The projector 101 shown in the present embodiment projects imaging light 111 toward the three-dimensional optical module 102. The three-dimensional optical module 102 condenses left-eye imaging light 112 and right-eye imaging light 113 to the curved mirror 103 according to the imaging light 111. Wherein left-eye imaging light 112 and right-eye imaging light 113 are obtained by diffusing and splitting the imaging light 111.
The following illustrates an alternative process for the three-dimensional optical module 102:
Example 1 first, the three-dimensional optical module 102 diffuses the received imaging light 111 to obtain diffused imaging light. Specifically, the imaging light 111 emitted from the projector 101 is collimated light, and the diffusion of the received imaging light 111 by the three-dimensional optical module 102 refers to diffuse reflection of the imaging light 111, so that the imaging light after being subjected to multiple reflection, refraction, scattering and absorption exits the diffused imaging light, so as to ensure that the brightness of the diffused imaging light is uniform. Next, the three-dimensional optical module 102 condenses the diffused imaging light to obtain condensed imaging light. Specifically, the converged imaging light can improve the definition of the 3D virtual image displayed by the three-dimensional display device. Again, the three-dimensional optical module 102 splits the converged imaging light to output left-eye imaging light 112 and right-eye imaging light 113. The three-dimensional display device shown in this embodiment can project the left-eye imaging light 112 and the right-eye imaging light 113, which are output from the three-dimensional optical module and have different transmission directions, to the left eye and the right eye of the driver, respectively. Thus, the left-eye imaging light 112 and the right-eye imaging light 113 are combined in the brain of the driver to form a 3D image displayed in front of the vehicle.
Example 2 first, the three-dimensional optical module 102 condenses the imaging light 111 to obtain condensed imaging light. And secondly, the three-dimensional optical module splits the converged imaging light to obtain left eye imaging light and right eye imaging light. Again, the three-dimensional optical module 102 diffuses the left-eye imaging light and the right-eye imaging light, respectively, so that the three-dimensional optical module 102 can output the diffused left-eye imaging light 112 and the diffused right-eye imaging light 113, and the description of convergence, light splitting and diffusion shown in example 2 is shown in example 1, which is not repeated.
Example 3 first, the three-dimensional optical module 102 condenses the imaging light 111 to obtain condensed imaging light. Next, the three-dimensional optical module 102 diffuses the imaging light to output the diffused imaging light. Again, the three-dimensional optical module 102 splits the diffused imaging light to output the left-eye imaging light 112 and the right-eye imaging light 113, and for the description of convergence, diffusion and light splitting shown in example 3, please refer to example 1, which is not repeated.
The three-dimensional display device in this embodiment includes a curved mirror 103 as an example, and the curved mirror 103 amplifies the left-eye imaging light 112 and the right-eye imaging light 113 from the three-dimensional optical module 102 and reflects them to the windshield 104 of the vehicle, and the windshield 104 reflects the left-eye imaging light 112 to the left eye of the driver and reflects the right-eye imaging light 113 to the right eye of the driver. The concave surface of the curved mirror 103 shown in the present embodiment serves as a reflecting surface for magnifying the spots of the left-eye imaging light 112 and the right-eye imaging light 113 from the three-dimensional display device. Specifically, the projector 101 emits the imaging light 111 according to the displayed source image, and the curved mirror 103 zooms in on the imaging light 111 from the projector 101 to realize zooming in on the source image. The left and right eyes of the driver receive the left and right eye imaging light 112 and 113, respectively, so that an enlarged 3D virtual image is observed, wherein the 3D virtual image is actually a virtual image formed by intersecting opposite extension lines of the left and right eye imaging light 112 and 113 reflected by the windshield 104. The optical paths of the left eye imaging light 112 and the right eye imaging light 113 emitted from the three-dimensional optical module 102 are not limited, and, for example, the three-dimensional display device shown in the embodiment includes a plurality of curved mirrors, and the left eye imaging light 112 and the right eye imaging light 113 are reflected by the curved mirrors to the windshield 104 in sequence.
In the three-dimensional display device shown in this embodiment, the projector is used as a light source, light outside the vehicle is mainly irradiated on the three-dimensional optical module 102 through the windshield 104 and the curved mirror 103 in sequence due to reversibility of the light path, then, heat generated by the light does not act on the projector 101 or heat acting on the projector 101 is low, and light is mainly irradiated on the three-dimensional optical module 102, then, bright spots are not generated on the projector 101 by the light, and imaging definition of the imaging light beam 111 emitted by the projector 101 is effectively improved. And the temperature of the projector 101 can not be raised severely by light, so that the condition that the projector is burnt out due to overhigh temperature is effectively avoided.
The three-dimensional display device shown in the present embodiment is applied to a vehicle, and it is understood that the projector shown in the present embodiment modulates driving-related information into imaging light, and the imaging light is projected to the front of the driver's field of view after being enlarged by the curved mirror. The driving related information may be advanced driving assistance system (ADVANCED DRIVING ASSISTANCE SYSTEM, ADAS) information, main data (fuel consumption, engine speed, temperature, etc.) on the dashboard of the vehicle, vehicle speed information, steering wheel angle information, navigation information, or vehicle body posture data, etc., and is not limited in this embodiment. Then, the 3D virtual image seen by the driver in front of the visual field is used for displaying driving related information, and the instrument panel or the central control display screen below the steering wheel does not need to be observed at a low head, so that the braking response time under emergency conditions can be improved, and the driving safety is improved. The three-dimensional display device shown in the embodiment can display the driving related information in a 3D form, so that the efficiency and the definition of the driving related information display are improved. And the three-dimensional display device can switch the 3D virtual image to a different virtual image position for display, wherein the 3D virtual image displayed at the different virtual image position has a different Virtual Image Distance (VID). The VID of a 3D virtual image refers to the distance between the 3D virtual image and the human eye. Then, the three-dimensional display device can switch the 3D virtual image to the position display of different VIDs according to different types of the driving related information, so that the display efficiency of the driving related information is improved.
Fig. 2 is a schematic diagram showing a partial structure of an embodiment of a three-dimensional display device according to the present application. The projector 101 shown in the present embodiment includes a light source 201 and a projector lens 202. The light source 201 modulates a projection light beam (white light) to output imaging light 111. The light source 201 projects imaging light to the projector lens 202. Projector lens 202 is used to project imaging light outward, which may be a short focal lens. The light source 201 in this embodiment may be a liquid crystal on silicon (liquid crystal on silicon) display, an organic light-emitting diode (OLED) display, a Liquid Crystal Display (LCD), a digital light processing (DIGITAL LIGHT procession, DLP) display, or a micro-electro-MECHANICAL SYSTEMS (MEMS) display.
Fig. 3 is a structural example diagram of a first embodiment of the three-dimensional optical module shown in fig. 2. The three-dimensional optical module shown in this embodiment includes a diffusion screen 301, a lens 302, and a spectroscopic device 303, wherein distances between the diffusion screen 301, the lens 302, and the spectroscopic device 303 and the projector 101 are sequentially increased. The three-dimensional optical module shown in this embodiment is used to implement the processing procedure of the imaging light shown in the foregoing example 1, which is not described in detail.
The diffusion screen 301 has a horizontal diffusion angle, which is an angle between the incident light and the outgoing light along the horizontal XY included angle. Referring to fig. 1, the horizontal plane XY shown in the present embodiment refers to a plane that includes the first direction X and the second direction Y in common. When the driver sits in the cabin of the vehicle and the line between the eyes is in a horizontal straight line, the line between the eyes at this time is parallel to the second direction Y. It will be appreciated that the view shown in fig. 1 is a side view of the cockpit, and that the eyes of the driver are then in a superimposed condition at the view in the second direction Y. The first direction X is in a horizontal direction away from or toward the steering wheel. As can be seen from the coordinate system shown in fig. 1, the first direction X is perpendicular to the second direction Y. In this example, the incident light to the diffusion screen 301 is the imaging light emitted from the projector, and the emitted light is the imaging light emitted from the diffusion screen 301. The diffusion screen 301 has a vertical diffusion angle, which is an angle between the incident light and the outgoing light along a vertical plane YZ. The vertical plane YZ shown in this example refers to a plane that includes the second direction Y and the third direction Z in common, wherein the third direction Z is perpendicular to the first direction X and the second direction Y, respectively. The three-dimensional optical module includes a spectroscopic device 303 for projecting left-eye imaging light to the left eye of the driver along the horizontal plane XY, and for projecting right-eye imaging light to the right eye of the driver along the horizontal plane XY. If the diffusion screen 301 has a larger horizontal diffusion angle for the imaging light in the horizontal plane XY, the diffusion screen 301 may cause crosstalk to the deflection of the imaging light by the light splitting device 303 along the horizontal plane XY, and the definition of the 3D virtual image is reduced. Therefore, the horizontal diffusion angle of the diffusion screen 301 shown in this embodiment is smaller than the vertical diffusion angle, so that crosstalk caused by deflection of the diffusion screen 301 along the horizontal plane XY of the light splitting device 303 is effectively reduced. To effectively improve the definition of the 3D virtual image and reduce crosstalk caused by deflection of the light splitting device 303 along the horizontal plane XY, the horizontal diffusion angle of the diffusion screen 301 shown in this embodiment is not greater than plus or minus 5 degrees (for example, deflection of the diffusion screen 301 in the horizontal plane XY in the clockwise direction is defined as a positive angle and deflection in the counterclockwise direction is defined as a negative angle). This embodiment takes the horizontal diffusion angle as an example of zero degrees. The diffusion screen 301 has a vertical diffusion angle to the imaging light along the vertical plane YZ, so that when the eyes of the driver move along the vertical plane YZ, the left eye imaging light and the right eye imaging light can be ensured to be successfully projected to the left eye and the right eye. In this embodiment, the diffusion screen 301 has a vertical diffusion angle of ±15° and a horizontal diffusion angle of ±1° as examples.
The lens 302 for focusing in the present embodiment may be made of a transparent optical material or a liquid crystal material, and the material of the lens 302 is not limited in this embodiment, as long as the lens 302 can focus left-eye imaging light and right-eye imaging light to the left eye and right eye of the driver. If the lens 302 is made of a liquid crystal material, the focal length of the lens 302 can be adjusted by electronic control. In this embodiment, the three-dimensional optical module includes one lens 302, and in other examples, the three-dimensional optical module may include a plurality of lenses 302 to achieve focusing of the imaging light.
The spectroscopic device 303 shown in this embodiment may be a lenticular lens array. The lenticular array may also be referred to as a lenticular lens. The light splitting device 303 may also be a liquid crystal array, and the arrangement state of the liquid crystal included in the liquid crystal array is controlled by using an electric field, so as to implement the deflection directions of the left-eye imaging light and the right-eye imaging light. Fig. 4 is a diagram illustrating a spectroscopic example of a spectroscopic module according to the present application. Fig. 4 illustrates an example of a lenticular lens array as the spectroscopic module 303. Specifically, the imaging light emitted from the projector modulates a source image, where the source image includes a pixel array, where pixels in odd columns are modulated on the first imaging light 401, and pixels in even columns are modulated on the second imaging light 402. The lenticular lens array comprises a plurality of sub-modules, each for deflecting one of the first imaging light 401 and one of the second imaging light 402. After passing through the diffusion screen 301 and the lens 302 in order, the first imaging light 401 enters the sub-module of the spectroscopic device 303 at a first incident angle. The second imaging light 402 sequentially passes through the diffusion screen 301 and the lens 302, and then enters the sub-module of the spectroscopic device 303 at a second incident angle. The first incident angle shown in this embodiment is the angle at which the first imaging light 401 enters the sub-module along the horizontal plane XY. The second angle of incidence is the angle at which the second imaging light 402 enters the sub-module along the horizontal plane XY. The sub-module deflects the transmission direction of the first imaging light incident at the first incident angle in the horizontal plane XY direction and emits the left-eye imaging light 403 at the first emission angle. The sub-module deflects the transmission direction of the second imaging light incident at the second incident angle in the horizontal plane XY direction, and emits the right-eye imaging light 403 at the second emission angle. The first exit angle shown in this embodiment is different from the second exit angle, and ensures that the left-eye imaging light 403 exiting at the first exit angle can be projected to the left eye of the driver, and the right-eye imaging light 404 exiting at the second exit angle can be projected to the right eye of the driver.
Fig. 5 is a structural example diagram of a second embodiment of the three-dimensional optical module shown in fig. 2. The three-dimensional optical module shown in this embodiment includes a lens 501, a spectroscopic device 502, and a diffusion screen 503, wherein distances between the lens 501, the spectroscopic device 502, and the diffusion screen 503 and the projector 101 are sequentially increased. The three-dimensional optical module shown in this embodiment is used to implement the processing procedure of the imaging light shown in the foregoing example 2, which is not described in detail. For the description of the three optical devices including the lens 501, the beam splitter 502 and the diffuser 503, please refer to the corresponding description of fig. 3, and detailed description is omitted.
Fig. 6 is a structural example diagram of a third embodiment of the three-dimensional optical module shown in fig. 2. The three-dimensional optical module shown in this embodiment includes a lens 601, a diffusion screen 602, and a spectroscopic device 603, where distances between the lens 601, the diffusion screen 602, and the spectroscopic device 603 and the projector 101 sequentially increase. The three-dimensional optical module shown in this embodiment is used to implement the processing procedure of the imaging light shown in the foregoing example 3, which is not described in detail. For the description of the lens 601, the diffusion screen 602, and the spectroscopic device 603, please refer to the corresponding description of fig. 3, and detailed description is omitted.
As can be seen in conjunction with fig. 3, 5 and 6, the three-dimensional optical module includes three optical devices including a lens, a diffusion screen and a spectroscopic device. And a light-transmitting filling layer is arranged between two adjacent optical devices at any position in the three optical devices. For example, in the example corresponding to fig. 3, a light-transmitting filling layer is provided between the diffusion screen 301 and the lens 302, and a filling layer is provided between the spectroscopic device 303 and the lens 302. In the example corresponding to fig. 5, a filling layer is provided between the lens 501 and the spectroscopic device 502, and a filling layer is provided between the spectroscopic device 502 and the diffusion screen 503. Also, in the example corresponding to fig. 6, a filling layer is provided between the lens 601 and the diffusion screen 602, and a filling layer is provided between the diffusion screen and the spectroscopic device 603. The filling layer in this embodiment may be deposited by optical glue, by which the three-dimensional optical module can be ensured to be an integral device. For example, the optical glue may be an Ultraviolet (UV) embossing glue. The three-dimensional optical module includes the optical paths of the three optical devices, and is not changed due to the positional shift between the three optical devices. That is, the filling layer ensures the three-dimensional optical module which becomes an integral device, and in the process of actual use, the position of the optical device (at least one of the lens, the diffusion screen and the optical splitting device) is not shifted to cause the change of the optical path, so that the left eye imaging light and the right eye imaging light emitted from the three-dimensional optical module can be successfully ensured to be projected to the left eye and the right eye, and the 3D virtual image can be successfully imaged. For example, the refractive index n 2 =1.8 of the lens, and the refractive index of the filling layer on the lens surface is n 1 =1.4. In this embodiment, the specific values and magnitude relationships of the refractive index n 2 of the lens and the refractive index n 1 of the filling layer are not limited. For the description of the light splitting device and the filling layer, and for the description of the diffusion screen and the filling layer, please refer to the description of the lens and the filling layer, and detailed description is omitted.
The following description is of how to ensure that left-eye imaging light and right-eye imaging light can be successfully projected to the left eye and the right eye, and ensure that the 3D virtual image can be successfully imaged. To ensure successful imaging of the 3D virtual image, the three-dimensional display device needs to satisfy the following three conditions:
Condition 1, wherein the focal length of the projector is related to a first distance, and the first distance is a distance between the projector lens and the three-dimensional optical module. Specifically, the condition 1 is As shown in connection with fig. 3, d 0 is the distance between the light source 201 of the projector and the projector lens 202. The first distance d 1 is the distance between the projector lens 202 and the three-dimensional optical module. f 0 is the focal length of projector lens 202. In this embodiment, the first distance d 1 between the three-dimensional optical module and the projector and the distance d 0 between the light source 201 of the projector and the projector lens 202 are all positive values, so as to indicate that the first distance d 1 and the distance d 0 between the light source 201 of the projector and the projector lens 202 are all located on the same side of the three-dimensional optical module.
Condition 2, the condition 2 is that the focal length f 1 of the lens is related to at least one of the first distance d 1 and the second distance d 2. If the lens is a concave lens, the focal length f 1 of the lens is negative. If the lens is a convex lens, the focal length f 1 of the lens is a positive value. Specifically, the condition 2 is: For the description of the first distance d 1, please refer to the condition 1, and detailed description is omitted. Referring to fig. 3, the second distance d 2 is the distance between the connecting line along the second direction Y and the three-dimensional optical module between the left eye and the right eye of the driver. In the present embodiment, the second distance d 2 is a negative value, so as to indicate that the second distance d 2 and the first distance d 1 are located on different sides of the three-dimensional optical module.
Condition 3, the focal length f of the spectroscopic device is set to be the condition 3, and the focal length f is related to at least one of the second distance d 2, the width p of the sub-module of the spectroscopic device in the horizontal plane XY, and the width W * of the target area in the horizontal plane XY. Specifically, the condition 3 is: for a description of the sub-modules of the spectroscopic device, please refer to fig. 4, and detailed description thereof will be omitted. The target area has a width W * in the horizontal plane XY, then the left and right eyes of the driver can view the 3D virtual image as they move within the width W * of the target area.
In condition 4, the spectroscopic module of the three-dimensional optical module has an inclination angle with respect to the diffusion screen in the horizontal plane XY. Referring specifically to fig. 7, fig. 7 is an imaging exemplary diagram of the three-dimensional optical module provided by the present application. In the horizontal plane XY, the light splitting module 701 has an inclination angle with respect to the diffusion screen 702, which may be any angle between 0 degrees and 20 degrees to ensure that the 3D virtual image can be successfully imaged. The tilt angle of the light splitting module 701 with respect to the diffuser 702 may be the angle between the first axis of symmetry 711 of the light splitting module 701 and the second axis of symmetry 712 of the diffuser 702. For the description of the light splitting module 701 and the diffusion screen 702 in this embodiment, please refer to the above embodiment, and detailed description is omitted. For example, the present embodiment takes an example in which the inclination angle is 6.34 °.
The three-dimensional display device shown in the present embodiment can ensure that the three-dimensional display device can successfully form a 3D virtual image in the case where the above-described conditions 1 to 4 are satisfied. For example, if the size of a source image displayed by a projector of a three-dimensional display device is 5.5 inches, and the resolution in the horizontal and vertical directions is 1920 pixels, the size of each pixel is 61 micrometers (μm). The first distance d 1 = 20 centimeters (cm) of the three-dimensional display device. The focal length f 1 of the lens is 40cm, then, based on the calculation of condition 2 above,Then d 2 = -40cm.
When the focal length f of the spectroscopic device is 1.4 millimeters (mm), d 2 = -40cm, the width p=244 μm of the submodule of the spectroscopic device in the horizontal plane XY, based on the calculation of the above condition 3, then,
In the process of driving a vehicle by using the three-dimensional display device shown in the embodiment, the position of the human eye can move at any time, and when the human eye moves, the three-dimensional display device provided by the embodiment can ensure that the human eye can successfully watch the 3D virtual image. Referring to fig. 8, fig. 8 is a first exemplary view of a three-dimensional display device forming a 3D virtual image in the case where the human eye moves.
The left and right eyes of the driver are at the source position 801 and the driver moves to a position such that the left and right eyes of the driver move to the target position 802. Wherein the left and right eyes are moved from the source position 801 to the target position 802 in the second direction Y. Specifically, the binocular connection at the source location 801 is located on the same line 803 as the binocular connection at the target location 802, and the line 803 is parallel to the direction Y. When the human eye moves from the source position 801 to the target position 802 in the direction Y, the moving distance 812 of the human eye is a moving distance between the source center point and the target center point, and the moving distance 812 of the human eye is described as Δx. Where the source center point is the center point of the line between the eyes at the source location 801 and the target center point is the center point of the line between the eyes at the target location 802.
The three-dimensional display device shown in this embodiment further includes a position sensor 821, a controller 823, and a driving component 822, the controller 823 is connected to the position sensor 821 and the driving component 822, respectively, the driving component 822 is connected to the lens of the three-dimensional optical module, and the driving component 822 is used for driving the lens to move along the Y direction so as to change the eccentric displacement amount of the lens. The eccentric displacement of the lens is a displacement in the second direction Y between the center of the lens when both eyes are at the source position 801 and the center of the lens when both eyes are at the target position 802. The position sensor 821 is for detecting a position where a human eye moves, and in the case where the human eye moves from the source position 801 to the target position 802, the position sensor 821 can obtain the Δx based on the movement of the human eye. The position sensor 821 transmits Δx to the controller 823, and the controller 823 transmits a driving signal to the driving unit 822 according to the Δx, and the driving unit 822 drives the lens of the three-dimensional optical module to move in the direction Y according to the driving signal so as to move the lens by a distance 811, which will be described below as Δx' for example.
The controller 823 ensures that the three-dimensional display device satisfies formula 1 by adjusting the moving distance to Δx': For the description of the first distance d 1 and the second distance d 2 in formula 1, please refer to the corresponding description of fig. 3, and detailed description is omitted. Alternatively, the position sensor 821 may send the coordinates of both eyes at the source position 801 and the coordinates of the target position 802 to the controller 823, and the controller 823 obtains Δx according to the coordinates of the source position 801 and the coordinates of the target position 802.
The drive assembly shown in this embodiment includes a motor and a transmission element. The motor drives the transmission element to rotate. The transmission element drives the lens to move along the Y direction under the action of the motor. The specific type of motor is not limited in this embodiment, and for example, the motor may be a stepping motor, a dc motor, a mute motor, a servo motor (or referred to as a servo motor), a voice coil motor, or the like. The type of the transmission element is not limited in this embodiment, and for example, the transmission element may be a screw, a gear, a cam barrel, or the like.
The present embodiment does not limit the type of controller, and for example, the controller may be one or more field-programmable gate arrays (FPGAs), application-specific integrated chips (ASICs), system on chips (socs), central processing units (central processor unit, CPUs), network processors (network processor, NPs), digital signal processing circuits (DIGITAL SIGNAL processors, DSPs), microcontrollers (micro controller unit, MCUs), programmable controllers (programmable logic device, PLDs), application processors (application processor, APs), modem processors, graphics processors (graphics processing unit, GPUs), image signal processors (IMAGE SIGNAL processors, ISPs), video codecs, baseband processors, and/or neural-network processors (neural-network processing unit, NPUs) or other integrated chips, or any combination of the above chips or processors.
Fig. 9 is a diagram showing a second example of forming a 3D virtual image in a case where the human eye moves. The left and right eyes of the driver are located at the source position 901, and the driver moves the position so that the left and right eyes of the driver move to the target position 902. Wherein the left and right eyes are moved from a source position 901 to a target position 902 along a first direction X. It will be appreciated that in the example shown in fig. 9, both eyes of the driver move in a direction away from or toward the windshield relative to the windshield. The human eye moves in direction X from a source position 901 to a target position 902.
The three-dimensional display device shown in the present embodiment further includes a position sensor 911 and a controller 912. For the description of the position sensor 911 and the controller 912, please refer to the corresponding description of fig. 8, and detailed descriptions thereof are omitted. The position sensor 911 is used for detecting the position of the movement of the human eye, and in the case that the human eye moves from the source position 901 to the target position 902, the position sensor 902 can obtain a second distance d2 based on the movement of the human eye, and the second distance d2 is the distance between the connecting line of the left eye and the right eye along the second direction Y and the three-dimensional optical module in the case that the human eye moves to the target position 902. The position sensor 911 sends the second distance d2 to the controller 912, and the controller 912 adjusts the focal length f 1 of the lens of the three-dimensional optical assembly according to the second distance so that the three-dimensional display device satisfies the following formula 2: Alternatively, the position sensor 911 may send the coordinates of both eyes at the target position 902 to the controller 912, and the controller 912 obtains the second distance d2 according to the coordinates of the target position 902. Based on the above formula 2, when the controller 912 detects that the human eye moves to the target position, the controller 912 can also ensure that the first distance d1, the second distance d2, and the focal length f 1 of the lens satisfy the above formula 1 by adjusting the focal length f 1 of the lens.
The embodiment of the application also provides a vehicle, which includes the three-dimensional display device and the windshield, and specifically forms a 3D virtual image, please refer to the corresponding description of fig. 1, and details are not repeated.
The application also provides a three-dimensional projection light source, which comprises a projector and a three-dimensional optical module, and the description of the projector and the three-dimensional optical module is shown in the above examples, and is not repeated. It will be appreciated that the three-dimensional projection light source shown in this embodiment is capable of emitting left-eye imaging light as well as right-eye imaging light.
Fig. 10 is a schematic diagram of a circuit connection of the three-dimensional display device according to the present application. The circuits in the three-dimensional display device mainly include a controller 1001, a memory 1002, a controller area network (controller area network, CAN) transceiver 1003, an audio module 1004, a video module 1005, a power module 1006, a wireless communication module 1007, an input/output (I/O) interface 1008, a video interface 1009, a touch unit 1010, a display circuit 1028, a three-dimensional projection light source 1029, and the like. The controller 1001 and its peripheral elements, such as a memory 1002, a can transceiver 1003, an audio module 1004, a video module 1005, a power module 1006, a wireless communication module 1007, an i/O interface 1008, a video interface 1009, a touch unit 1010, and a display circuit 1028, may be connected by a bus. In addition, the circuit diagram illustrated in the embodiment of the present application does not constitute a specific limitation of the three-dimensional display device. In other embodiments of the application, the three-dimensional display device may include more or less components than illustrated, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.
A memory may also be provided in the controller 1001 for storing instructions and data. In some embodiments, the memory in the controller 1001 is a cache memory. The memory may hold instructions or data that the controller 1001 has just used or recycled. If the controller 1001 needs to reuse the instruction or data, it can be called directly from the memory. Repeated accesses are avoided, reducing the latency of the controller 1001 and thus improving the efficiency of the system.
In some embodiments, the three-dimensional display device may also include a plurality of I/O interfaces 1008 coupled to the controller 1001. The interface 1008 may include, but is not limited to, an integrated circuit (inter-INTEGRATED CIRCUIT, I2C) interface, an integrated circuit built-in audio (inter-INTEGRATED CIRCUIT SOUND, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, a universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART) interface, a mobile industry processor interface (mobile industry processor interface, MIPI), a general-purpose input/output (GPIO) interface, a subscriber identity module (subscriber identity module, SIM) interface, and/or a universal serial bus (universal serial bus, USB) interface, among others. The I/O interface 1008 may be connected to a mouse, a touch pad, a keyboard, a camera, a speaker/horn, a microphone, or may be connected to physical keys (e.g., a volume key, a brightness adjustment key, an on/off key, etc.) on the three-dimensional display device.
Memory 1002 may include internal memory and may also include external memory, and memory 1002 may be used to store computer-executable program code, including instructions. The memory 1002 may include a stored program area and a stored data area. The storage program area may store an operating system, an application program required for at least one function (such as the application program for displaying a virtual image by the three-dimensional display device described above), and the like. The storage data area may store data created during use of the three-dimensional display device (such as a source image displayed by a projector of the three-dimensional display device), and the like. In addition, memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash memory (universal flash storage, UFS), and the like. The controller 1001 performs various functional applications of the three-dimensional display device and data processing by executing instructions stored in the memory 1002 and/or instructions stored in a memory provided in the controller 1001.
CAN transceiver 1003 may be connected to a CAN BUS (CAN BUS) of the vehicle. The three-dimensional display device CAN communicate with a car entertainment system (music, radio, video module), a car status system, etc. through the CAN bus. For example, the user may turn on the in-vehicle music play function by operating the three-dimensional display device. The vehicle status system may send the driving related information to a three-dimensional display device for display.
The three-dimensional display device may implement audio functions through an audio module 1004, an application processor, and the like. Such as music playing or talking, etc. The audio module 1004 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. The audio module 1004 may also be used to encode and decode audio signals, such as for playback or recording. In some embodiments, the audio module 1004 may be provided in the controller 1001, or a part of functional modules of the audio module 1004 may be provided in the controller 1001.
The video interface 1009 may receive input audio and video, which may specifically be a high-definition multimedia interface (high definition multimedia interface, HDMI), a digital video interface (digital visual interface, DVI), a video graphics array (video GRAPHICS ARRAY, VGA), a Display Port (DP), a Low Voltage Differential Signal (LVDS) interface, and the like, and the video interface 1009 may also output video. For example, the three-dimensional display device receives video data transmitted by the navigation system through the video interface.
The video module 1005 may decode the video input by the video interface 1009, for example, h.264 decoding. The video module can also encode the video acquired by the three-dimensional display device, for example, H.264 encoding is performed on the video acquired by the external camera. The controller 1001 may decode the video input from the video interface 1009 and output the decoded image signal to the three-dimensional projection light source 1029.
The display circuit 1028 and the three-dimensional projection light source 1029 are used to display the corresponding images. In this embodiment, the video interface 1009 receives input video data (or referred to as a video source), the video module 1005 decodes and/or digitizes the input video data, and outputs an image signal to the display circuit 1028, and the display circuit 1028 drives the three-dimensional projection light source 1029 to image according to the input image signal, so as to generate a visual image. For example, the three-dimensional projection light source 1029 generates a source image, and emits imaging light. The display circuit 1028 may be referred to as a driving circuit.
The power module 1006 is configured to provide power to the controller 1001 and the three-dimensional projection light source 1029 according to input power (e.g., direct current), and a rechargeable battery may be included in the power module 1006, and the rechargeable battery may provide power to the controller 1001 and the three-dimensional projection light source 1029. In addition, the power module 1006 may be connected to a power module (e.g., a power battery) of the vehicle, which provides power to the power module 1006 of the three-dimensional display device.
The wireless communication module 1007 may enable wireless communication between the three-dimensional display device and the outside world, and may provide a solution for wireless communication such as wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (WIRELESS FIDELITY, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation SATELLITE SYSTEM, GNSS), frequency modulation (frequency modulation, FM), near Field Communication (NFC), infrared (IR), and the like. The wireless communication module 1007 may be one or more devices that integrate at least one communication processing module. The wireless communication module 1007 receives electromagnetic waves via an antenna, modulates the electromagnetic wave signals, performs filtering processing, and transmits the processed signals to the controller 1001. The wireless communication module 1007 may also receive a signal to be transmitted from the controller 1001, frequency-modulate it, amplify it, and convert it to electromagnetic waves for radiation via an antenna.
In addition, the video data decoded by the video module 1005 may be received wirelessly by the wireless communication module 1007 or read from the memory 1002, for example, the three-dimensional display apparatus may receive video data from a terminal device or an in-vehicle entertainment system through a wireless lan in the vehicle, and the three-dimensional display apparatus may read audio/video data stored in the memory 1002, in addition to the video data input through the video interface 1009.
The controller 1001 in this embodiment is further connected to a driving unit 1030, where the driving unit 1030 is connected to the three-dimensional projection light source 1029, and the controller 1001 sends a driving signal to the driving unit 1030, and the driving unit 1030 changes the position of the lens in the three-dimensional optical module (as shown in fig. 8) or changes the focal length of the lens in the three-dimensional optical module (as shown in fig. 9) according to the driving signal.
While the application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that the foregoing embodiments may be modified or equivalents may be substituted for some of the features thereof, and that the modifications or substitutions do not depart from the spirit and scope of the embodiments of the application.
Claims (16)
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| CN202310685304.5A CN119148377A (en) | 2023-06-09 | 2023-06-09 | Three-dimensional display device, three-dimensional projection light source and vehicle |
| PCT/CN2024/097483 WO2024251145A1 (en) | 2023-06-09 | 2024-06-05 | Three-dimensional display apparatus, three-dimensional projection light source, and traffic means |
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| CN202310685304.5A CN119148377A (en) | 2023-06-09 | 2023-06-09 | Three-dimensional display device, three-dimensional projection light source and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040026693A (en) * | 2001-07-27 | 2004-03-31 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | Autostereoscopic image display with observer tracking system |
| CN100429559C (en) * | 2003-08-22 | 2008-10-29 | 株式会社电装 | virtual image display device |
| JP5799535B2 (en) * | 2010-03-25 | 2015-10-28 | セイコーエプソン株式会社 | System for generating aerial 3D image and method for generating aerial 3D image |
| JP2014102276A (en) * | 2012-11-16 | 2014-06-05 | Nikon Corp | Display device |
| JP2014115447A (en) * | 2012-12-10 | 2014-06-26 | Toshiba Corp | Image display device |
| JP6791058B2 (en) * | 2017-08-09 | 2020-11-25 | 株式会社デンソー | 3D display device |
| CN209014819U (en) * | 2018-10-17 | 2019-06-21 | 苏州车萝卜汽车电子科技有限公司 | Head-up display device |
| CN114690532B (en) * | 2020-12-31 | 2024-04-23 | 华为技术有限公司 | Display system |
| CN115542644B (en) * | 2022-06-24 | 2024-06-04 | 华为技术有限公司 | Projection device, display equipment and vehicle |
-
2023
- 2023-06-09 CN CN202310685304.5A patent/CN119148377A/en active Pending
-
2024
- 2024-06-05 WO PCT/CN2024/097483 patent/WO2024251145A1/en unknown
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| Publication number | Publication date |
|---|---|
| WO2024251145A1 (en) | 2024-12-12 |
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