Head-up display device, design method and control method thereof, and carrier

Abstract

The embodiment of the invention provides a head-up display device, a design method and a control method thereof, and a carrier, and relates to the technical field of head-up display. The head-up display device provided by the embodiment of the invention comprises an image source used for generating a left eye image light beam and a right eye image light beam; the lenticular grating comprises at least two lenticular subareas, and each lenticular subarea comprises at least two lenticular lenses; the at least two cylindrical lens subareas comprise a first cylindrical lens subarea and a second cylindrical lens subarea; the image source comprises a plurality of sub-pixels, the sub-pixels comprise a first type of sub-pixels, and the first type of sub-pixels are configured to reduce luminance or extinguish; in both the first lenticular partition and the second lenticular partition, the first lenticular partition includes a first type of sub-pixels. According to the head display device, the design method and the control method thereof, and the carrier provided by the embodiment of the invention, the crosstalk problem can be alleviated, and meanwhile, the problem of resolution reduction caused by sub-pixel extinguishing can be alleviated.

Description

Technical Field

[0001] The present invention relates to the field of head-up display technology, and in particular to a head-up display device and a design method and a control method thereof, and a vehicle. Background Art

[0002] With the popularization of automobiles, they are becoming more and more intelligent. In order to improve driving safety and make drivers focus more on the road, more and more vehicles use head up displays (HUD) instead of instrument panels to display driving information. With the development of head up displays, there are different types of HUDs, among which AR-HUD has been widely used.

[0003] Common AR-HUD uses a special lenticular grating to achieve light splitting, so that the left and right eyes see different images, which are then merged into a 3D effect image in the user's brain. However, this lenticular grating is prone to crosstalk, causing the left and right eye images to cross. Summary of the invention

[0004] The embodiments of the present invention provide a head display device and a design method and a control method thereof, and a carrier, so as to reduce the crosstalk problem and the problem of resolution reduction caused by extinguishing pixels.

[0005] In a first aspect, an embodiment of the present invention provides a head-up display device, comprising:

[0006] An image source, the image source is used to generate a left-eye image beam and a right-eye image beam;

[0007] A cylindrical grating is located on the propagation paths of the left-eye image beam and the right-eye image beam, and is used for splitting and projecting the left-eye image beam and the right-eye image beam; the cylindrical grating includes at least two cylindrical partitions, and the cylindrical partitions include at least two cylindrical lenses; the at least two cylindrical partitions include a first cylindrical partition and a second cylindrical partition;

[0008] The image source includes a plurality of sub-pixels, the sub-pixels include first-type sub-pixels, and the first-type sub-pixels are configured to reduce light emission brightness or turn off; in both the first lenticular partition and the second lenticular partition, the first lenticular partition includes the first-type sub-pixels.

[0009] Optionally, a plurality of cylindrical lenses are arranged along a first direction;

[0010] The cylindrical lens comprises a central region and an edge region, wherein the geometric center of the cylindrical lens is located in the central region, and along a first direction, the edge region is located at the periphery of the central region;

[0011] The orthographic projection of the first type of sub-pixel on the plane where the lenticular grating is located is located in the edge area.

[0012] Optionally, the first-type sub-pixels in the same row form a first-type sub-pixel column;

[0013] In the first lenticular subarea, a plurality of first-type sub-pixel columns are periodically arranged along a first direction.

[0014] Optionally, the first-type sub-pixels in the same row form a first-type sub-pixel column;

[0015] The edge region includes a first edge region and a second edge region. In the same cylindrical lens, the first edge region and the second edge region are located on both sides of the central region.

[0016] In the first lenticular partition, the first type of sub-pixel columns are located in the first edge region;

[0017] Alternatively, in the first lenticular subregion, the first type of sub-pixel columns are located in the second edge region.

[0018] Optionally, the first-type sub-pixels in the same row form a first-type sub-pixel column;

[0019] The edge region includes a first edge region and a second edge region. In the same cylindrical lens, the first edge region and the second edge region are located on both sides of the central region.

[0020] In the first lenticular lens partition, the same first-type sub-pixel column is located in a first edge region and a second edge region of adjacent lenticular lenses.

[0021] Optionally, the head-up display device further includes a curved reflector, which is located on the propagation paths of the split left-eye image light beam and the right-eye image light beam.

[0022] Optionally, the first-type sub-pixels in the same row form a first-type sub-pixel column;

[0023] The first type of sub-pixel columns include dimming sub-pixel columns and extinction sub-pixel columns, the first type of sub-pixels in the dimming sub-pixel columns are configured to reduce the light emission brightness, and the first type of sub-pixels in the extinction sub-pixel columns are configured to be extinguished;

[0024] The first lenticular sub-region includes dimming sub-pixel columns and / or extinction sub-pixel columns.

[0025] Optionally, the edge region in the first lenticular subregion includes a dimming sub-pixel column or a light-extinguishing sub-pixel column.

[0026] Optionally, the at least two lenticular subareas further include a third lenticular subarea;

[0027] The first lenticular sub-region includes a dimming sub-pixel column, and the third lenticular sub-region includes a light-extinguishing sub-pixel column; or the first lenticular sub-region includes a light-extinguishing sub-pixel column, and the third lenticular sub-region includes a dimming sub-pixel column.

[0028] Optionally, the same edge region includes a dimming sub-pixel column and an extinction sub-pixel column;

[0029] Along the first direction, in the same cylindrical lens, the dimming sub-pixel column is located between the extinction sub-pixel column and the central area.

[0030] Optionally, the same edge region dimming sub-pixel column includes a first dimming sub-pixel column and a second dimming sub-pixel column, and the luminance of the first type of sub-pixels in the first dimming sub-pixel column is greater than the luminance of the first type of sub-pixels in the second dimming sub-pixel column;

[0031] Along the first direction, in the same cylindrical lens, the first dimming sub-pixel column is located between the second dimming sub-pixel column and the central area.

[0032] In a second aspect, an embodiment of the present invention provides a vehicle, comprising the head-up display device described in the first aspect, and a windshield.

[0033] In a third aspect, an embodiment of the present invention provides a design method for a head-up display device, the head-up display device comprising an image source and a lenticular lens; the image source is used to generate a left-eye image beam and a right-eye image beam; the lenticular lens is located on a propagation path of the left-eye image beam and the right-eye image beam, and is used to split the left-eye image beam and the right-eye image beam for projection; the image source comprises a plurality of sub-pixels;

[0034] Design methods include:

[0035] Acquire multiple light crosstalk regions on the cylindrical grating;

[0036] According to the plurality of light crosstalk regions, the lenticular grating is divided into at least two lenticular partitions, the lenticular partitions include at least two cylindrical lenses, and the at least two lenticular partitions include a first lenticular partition and a second lenticular partition; wherein the first lenticular partition includes the light crosstalk region;

[0037] A portion of the sub-pixels in the first lenticular lens partition is controlled to be first-type sub-pixels; wherein the first-type sub-pixels are configured to reduce light luminance or turn off.

[0038] Optionally, after acquiring a plurality of light crosstalk areas on the cylindrical grating, the method further includes:

[0039] Obtaining the density distribution of stray light in multiple light crosstalk areas;

[0040] Controlling a portion of sub-pixels in the first lenticular lens partition to be first-type sub-pixels includes:

[0041] According to the distribution of stray light density in multiple light crosstalk areas, multiple configuration schemes corresponding to the first type of sub-pixels in the multiple light crosstalk areas are obtained, wherein the multiple configuration schemes include configuration scheme one or configuration scheme two, configuration scheme one includes reducing the luminous brightness of the first type of sub-pixels, and configuration scheme two includes extinguishing the first type of sub-pixels.

[0042] Optionally, configuration scheme one also includes: in a light crosstalk area where the stray light is denser, the first type of sub-pixel reduces the light luminance more.

[0043] Optionally, after controlling some of the sub-pixels in the first lenticular lens partition to be sub-pixels of the first type, the method further includes:

[0044] The sub-pixels other than the first type of sub-pixels are arranged to form a display pattern.

[0045] In a fourth aspect, an embodiment of the present invention provides a method for controlling a head-up display device, comprising:

[0046] Preset multiple points in the eye box, calibrate a brightness adjustment strategy for each point, and the brightness adjustment strategy is formed by the design method described in the third aspect;

[0047] Using a detection device to detect a target position of a human eye;

[0048] According to the target position, select the brightness adjustment strategy corresponding to the point where the target position is located.

[0049] The head-up display device provided by the embodiment of the present invention reduces the light incident on the first column mirror partition by only reducing the luminance or extinguishing the first type of sub-pixels, without affecting the light incident on the second column mirror partition, thereby reducing the light that causes crosstalk problems and alleviating the crosstalk problem of the head-up limiting device; at the same time, because the light incident on the second column mirror partition is not affected, the problem of reduced resolution of the head-up display device due to reduced output light is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a schematic diagram of a three-dimensional structure of a head-up display device provided by an embodiment of the present invention;

[0051] Figure 2 is a structural schematic diagram of a head-up display device provided by an embodiment of the present invention;

[0052] Figure 3 is a schematic structural diagram of another head-up display device provided by an embodiment of the present invention;

[0053] Figure 4 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0054] Figure 5 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0055] Figure 6 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0056] Figure 7 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0057] Figure 8 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0058] Fig. 9 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0059] Fig.10 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0060] Fig.11 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0061] Fig.12 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0062] Fig.13 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention;

[0063] Fig.14 is a structural schematic diagram of a carrier provided by an embodiment of the present invention;

[0064] Fig.15 is a flow chart of a design method of a head-up display device provided by an embodiment of the present invention;

[0065] Fig.16 is a flow chart of a design method of a head-up display device provided by an embodiment of the present invention;

[0066] Fig.17 The figure is a flow chart of a method for controlling a head-up display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0067] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0068] The study found that the crosstalk problem mainly occurs at the arc edge of the cylindrical lens in the cylindrical grating. To eliminate the crosstalk, one approach is to turn off one pixel at the arc edge of the cylindrical lens closest to the cylindrical lens in the image source. However, this approach not only eliminates the crosstalk light, but also turns off the pixels that do not cause crosstalk problems, which will cause the resolution of the head-up display device to decrease. Conventional cognition is based on the cylindrical grating commonly used in stereoscopic display devices, which usually turns off one pixel at the arc edge of all cylindrical lenses. The study found that the head-up display device has a non-uniform effect on imaging, that is, the imaging light path causes the crosstalk to increase in some areas and disappear in some areas.

[0069] Figure 1 is a schematic diagram of a three-dimensional structure of a head-up display device provided by an embodiment of the present invention, with reference to Figure 1 , Figure 2 is a schematic diagram of a head-up display device provided by an embodiment of the present invention, with reference to Figure 1 and Figure 2 , the first direction X is the arrangement direction of the cylindrical lens, and the second direction Y is the extension direction of the cylindrical lens. The head-up display device includes an image source 1 and a cylindrical grating 2. The image source 1 is used to generate a left-eye image beam and a right-eye image beam. The cylindrical grating 2 is located on the propagation path of the left-eye image beam and the right-eye image beam, and the cylindrical grating 2 is used to split the left-eye image beam and the right-eye image beam for projection. The cylindrical grating 2 is a spectroscopic element, which deflects the left-eye image beam and the right-eye image beam in different directions to project the left-eye image beam to the left eye and the right-eye image beam to the right eye. The cylindrical grating 2 includes at least two cylindrical partitions 20, and the cylindrical partition 20 includes at least two cylindrical lenses 4. The at least two cylindrical partitions 20 include a first cylindrical partition 21 and a second cylindrical partition 22. The image source 1 includes a plurality of sub-pixels 3, and a plurality of sub-pixels 3 are combined into one pixel. It is worth noting that the sub-pixels 3 are usually evenly arranged on the image source 1. The sub-pixel 3 includes a first type of sub-pixel 31, and the first type of sub-pixel 31 is configured to reduce the luminous brightness or turn off. That is, on the basis of the original luminous brightness, the luminous brightness is reduced, for example, by multiplying by a proportional coefficient or in other ways. Or, the original luminous brightness is changed to no light. In both the first column mirror partition 21 and the second column mirror partition 22, the first column mirror partition 21 includes the first type of sub-pixel 31. The first type of sub-pixel 31 is arranged in the first column mirror partition 21, and the first type of sub-pixel 31 is not arranged in the second column mirror partition 22. The light emitted by the first type of sub-pixel 31 will be incident on the first column mirror partition 21, and will not be incident on the second column mirror partition 22. There may be a small amount of crosstalk light in the second column mirror partition 22, or there may be no crosstalk light, so there is no need to set the first type of sub-pixel 31, and at least the resolution of the second column mirror partition 22 is improved, thereby improving the resolution of the head-up display device. Among them, Figure 2Two lenticular subareas 20 are used as an example, but the present invention is not limited thereto. In other embodiments, the lenticular grating 2 may also be provided with other numbers of lenticular subareas 20. The embodiment of the present invention does not limit the number of sub-pixels 3 covered by each lenticular lens 4.

[0070] Figure 3 is a schematic diagram of the structure of another head-up display device provided by an embodiment of the present invention, referring to Figure 3 , a plurality of sub-pixels 3 are arranged into a sub-pixel column 30, the arrangement direction of the sub-pixel column 30 is different from the arrangement direction of the cylindrical lens 4, and the extension direction of the sub-pixel column 30 is different from the extension direction of the cylindrical lens 4. The embodiment of the present invention does not limit the arrangement direction of the cylindrical lens 4 and the sub-pixels 3. In other embodiments, the extension direction of the sub-pixel column 30 and the extension direction of the cylindrical lens 4 can also be the same.

[0071] Among them, the cylindrical grating 2 includes a plurality of cylindrical lenses 4 arranged periodically along the first direction X. However, due to the process limitation of manufacturing the cylindrical lenses 4, there will inevitably be gaps between some adjacent cylindrical lenses 4 in the cylindrical grating 2. The light emitted from the image source 1 is emitted from the gaps between the cylindrical lenses 4, which will cause the images received by the left and right eyes to cross, resulting in a crosstalk problem.

[0072] As an example, the first cylindrical mirror partition 21 is an area where the crosstalk problem exists, and the light emitted by the first type of sub-pixel 31 will pass through the first cylindrical mirror partition 21, and the second cylindrical mirror partition 22 is an area where there is no crosstalk problem. The first type of sub-pixel 31 can be determined by a reverse tracing method: first, the image output by the head-up display device is received by a receiver, and the position of the crosstalk light in the image received by the receiver is determined, and then according to the position of the crosstalk light, the sub-pixel 3 outputting these crosstalk light on the image source 1 is obtained by reverse tracing the light path, and the sub-pixel 3 outputting these crosstalk light on the image source 1 is the first type of sub-pixel 31. It can be understood that the light emitted by the first type of sub-pixel 31 is not all light that will cause crosstalk. In the first cylindrical mirror partition 21, there are positions where crosstalk light exists, and there are also positions where crosstalk light does not exist.

[0073] By reducing the brightness or turning off the first type of sub-pixel 31 and reducing the crosstalk light incident on the first cylindrical mirror partition 21, the light that causes the crosstalk problem can be reduced or even eliminated. The reason for only reducing the light incident on the first cylindrical mirror partition 21 is that if the light incident on the second cylindrical mirror partition 22 without the crosstalk problem is also reduced, the light emission of the sub-pixel of the image source 1 will be reduced, resulting in a decrease in the resolution of the head-up display device and affecting the imaging quality. However, if only the light incident on the first cylindrical mirror partition 21 is reduced, the light that causes crosstalk can be accurately reduced, and at the same time, the imaging quality of the second cylindrical mirror partition 22 will not be affected, reducing the impact on the resolution of the head-up display device and improving the image quality output by the head-up display device.

[0074] The head-up display device provided by the embodiment of the present invention reduces the light incident on the first column mirror partition 21 by only reducing the luminance or extinguishing the first type of sub-pixel 31, without affecting the light incident on the second column mirror partition 22, thereby reducing the light that causes crosstalk problems, thereby alleviating the crosstalk problem of the head-up limiting device; at the same time, because the light incident on the second column mirror partition 22 is not affected, the problem of reduced resolution of the head-up display device due to reduced output light is reduced.

[0075] Figure 4 is a schematic diagram of the structure of another head-up display device provided by an embodiment of the present invention, referring to Figure 4 , a plurality of cylindrical lenses 4 are arranged along a first direction X. The cylindrical lenses 4 include a central region 41 and an edge region 40, the geometric center of the cylindrical lens 4 is located in the central region 41, and along the first direction X, the edge region 40 is located at the periphery of the central region 41. The orthographic projection of the first type of sub-pixel 31 on the plane where the cylindrical grating 2 is located is located in the edge region 40.

[0076] refer to Figure 4 , the edge areas 40 of the cylindrical lenses 4 are butted together, and there may be a gap between the edge areas 40 of two adjacent cylindrical lenses 4. The light passing through the gap will cause crosstalk problems, so it is necessary to reduce the light incident on the edge area 40 of the image source 1 to alleviate the crosstalk problem. In the image source 1, most of the light emitted by the sub-pixel 3 whose orthographic projection on the plane where the cylindrical grating 2 is located is located in the edge area 40 will be incident on the edge area 40, causing crosstalk problems. Therefore, the orthographic projection of the first type of sub-pixel 31 that causes crosstalk problems on the plane where the cylindrical grating 2 is located is located in the edge area 40. Reducing the luminous brightness or extinguishing the first type of sub-pixel 31 whose orthographic projection on the plane where the cylindrical grating 2 is located is located in the edge area 40, which can reduce the light incident on the edge area 40 of the image source 1, thereby alleviating the crosstalk problem.

[0077] Figure 5 is a schematic diagram of the structure of another head-up display device provided by an embodiment of the present invention, referring to Figure 5 , the first type of sub-pixels 31 in the same row form a first type of sub-pixel column 32. In the first cylindrical lens partition 21, multiple first type of sub-pixel columns 32 are arranged periodically along the first direction X. In the first cylindrical lens partition 21, there are gaps between the cylindrical lenses 4. Since the cylindrical lenses 4 are arranged periodically along the first direction X, the gaps between the cylindrical lenses 4 are also distributed periodically along the first direction X, so the first type of sub-pixels 31 on the image source 1 are also distributed periodically along the first direction X. It can be considered that in the same sub-pixel column, the crosstalk degree of each sub-pixel 3 is the same, so the first type of sub-pixels 31 will form a first type of sub-pixel column 32 in the second direction Y, and the first type of sub-pixel column 32 is distributed periodically in the first direction X.

[0078] Combination Figure 3 and Figure 5 As shown, in order to alleviate the crosstalk problem, if Figure 5 If all the first type of sub-pixel columns 32 in the image are turned off or the brightness is reduced, the resolution of the output image along the first direction X will be reduced, while the resolution of the output image along the second direction Y will remain unchanged. Figure 3 As shown in the arrangement, after turning off certain sub-pixel columns 30, the resolution of the output image along the first direction X and the resolution along the second direction Y are reduced, which can reduce the difference between the resolution in the first direction X and the resolution in the second direction Y, and the output image is more in line with human common sense.

[0079] Figure 6 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention, Figure 7 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention, Figure 8 is a schematic diagram of the structure of another head-up display device provided by an embodiment of the present invention, combined with Figure 6 , Figure 7 and Figure 8 As shown, optionally, the first sub-pixels 31 in the same row form a first sub-pixel column 32, the edge region includes a first edge region 42 and a second edge region 43, and in the same cylindrical lens 4, the first edge region 42 and the second edge region 43 are located on both sides of the central region 41. In the first cylindrical lens partition 21, the first sub-pixel column 32 is located in the first edge region 42, or, in the first cylindrical lens partition 21, the first sub-pixel column 32 is located in the second edge region 43.

[0080] Optionally, the first-type sub-pixels 31 in the same row form a first-type sub-pixel column 32, the edge area 40 includes a first edge area 42 and a second edge area 43, and in the same cylindrical lens 4, the first edge area 42 and the second edge area 43 are located on both sides of the central area 41, and in the first cylindrical lens partition 21, the same first-type sub-pixel column 32 is located in the first edge area 42 and the second edge area 43 of the adjacent cylindrical lens 4.

[0081] Combination Figure 6 , Figure 7 and Figure 8 As shown, the first type of sub-pixel column 32 may be located in the first edge region 42 or in the second edge region 43 , and the first type of sub-pixel column 32 may also be located in the first edge region 42 or the second edge region 43 of the adjacent cylindrical lens 4 .

[0082] On the basis of the above embodiment, the head-up display device further includes a curved reflector, which is located on the propagation path of the split left-eye image light beam and the right-eye image light beam.

[0083] The curved reflector can reflect the split left eye image beam and the right eye image beam to the windshield of the vehicle, and the windshield can reflect the left eye image beam and the right eye image beam to the eye box. At the same time, the curved reflector has a convergence effect on the light, which can prevent the split left eye image beam and the right eye image beam from diverging. The eye box refers to the distribution range of the eyeballs on the driver's side that can see the complete image.

[0084] Fig. 9 is a schematic diagram of the structure of another head-up display device provided by an embodiment of the present invention, referring to Fig. 9 , the first sub-pixels 31 in the same row form a first sub-pixel column 32. The first sub-pixel column 32 includes a dimming sub-pixel column 33 and an extinction sub-pixel column 34. The first sub-pixels 31 in the dimming sub-pixel column 33 are configured to reduce the luminance, and the first sub-pixels 31 in the extinction sub-pixel column 34 are configured to be extinguished; the first lenticular sub-region 21 includes the dimming sub-pixel column 33 and / or the extinction sub-pixel column 34.

[0085] The degree of crosstalk that can be caused by each first-class sub-pixel 31 that emits crosstalk light is different. The first-class sub-pixel 31 that emits dense crosstalk light will cause a large degree of crosstalk, and needs to reduce the brightness more or even turn off. The first-class sub-pixel 31 that emits sparse crosstalk light causes a small degree of crosstalk. In order to ensure the high resolution of the head-up display device, this first-class sub-pixel 31 can only reduce a small amount of brightness. Exemplarily, the first-class sub-pixel 31 that causes a large degree of crosstalk will be turned off, and the extinguished first-class sub-pixels 31 in the same row will form an extinction sub-pixel column 34; the first-class sub-pixel 31 that causes a small degree of crosstalk will have its brightness reduced, and the first-class sub-pixels in the same row with reduced brightness will form a dimming sub-pixel column 33. Therefore, there may be only a dimming sub-pixel column 33, or only a dimming sub-pixel column 34, or both a dimming sub-pixel column 33 and a dimming sub-pixel column 34 in the first cylindrical lens partition 21.

[0086] Optionally, the edge region 40 in the first lenticular partition 21 includes a dimming sub-pixel column 33 or a light-extinguishing sub-pixel column 34. The crosstalk problem can be alleviated by reducing the luminance or extinguishing the first-type sub-pixels 31 whose orthographic projection on the plane where the lenticular grating 2 is located in the edge region 40. The first-type sub-pixels 31 in different first-type sub-pixel columns 32 cause different degrees of crosstalk, so it is necessary to reduce the brightness or extinguish the first-type sub-pixels 31 in the first-type sub-pixel columns 32 according to the degree of crosstalk caused by the first-type sub-pixels 31, thereby forming a dimming sub-pixel column 33 or a light-extinguishing sub-pixel column 34.

[0087] Fig.10 is a structural schematic diagram of another head-up display device provided by an embodiment of the present invention, Fig.11is a schematic diagram of the structure of another head-up display device provided by an embodiment of the present invention, combined with Fig.10 and Fig.11 As shown, at least two lenticular partitions 20 further include a third lenticular partition 23. The first lenticular partition 21 includes a dimming sub-pixel column 33, and the third lenticular partition 23 includes a light-extinguishing sub-pixel column 34, or the first lenticular partition 21 includes a light-extinguishing sub-pixel column 34, and the third lenticular partition 23 includes a dimming sub-pixel column 33. The dimming sub-pixel column 33 is composed of the first type of sub-pixels 31 with reduced brightness, and the light-extinguishing sub-pixel column 34 is composed of the first type of sub-pixels 31 that are extinguished.

[0088] Fig.12 is a schematic diagram of the structure of another head-up display device provided by an embodiment of the present invention, referring to Fig.12 The same edge region 40 includes a dimming sub-pixel column 33 and an extinction sub-pixel column 34 . Along the first direction X, in the same cylindrical lens 4 , the dimming sub-pixel column 33 is located between the extinction sub-pixel column 34 and the central region 41 . Fig.13 is a schematic diagram of the structure of another head-up display device provided by an embodiment of the present invention, referring to Fig.13 The dimming sub-pixel column 33 in the same edge area 40 includes a first dimming sub-pixel column 331 and a second dimming sub-pixel column 332. The luminous brightness of the first type of sub-pixels 31 in the first dimming sub-pixel column 331 is greater than the luminous brightness of the first type of sub-pixels 31 in the second dimming sub-pixel column 332. Along the first direction X, in the same cylindrical lens 4, the first dimming sub-pixel column 331 is located between the second dimming sub-pixel column 332 and the central area 41.

[0089] Since the crosstalk problem is usually caused by the gap between the cylindrical lenses 4, in the first cylindrical lens partition 21, the sub-pixel 3 closer to the edge of the cylindrical lens 4 causes more serious crosstalk problems, so the first type of sub-pixel 31 closest to the edge of the cylindrical lens 4 has a greater degree of brightness reduction or even is set to be extinguished, while the first type of sub-pixel 31 closer to the central area 41 causes less crosstalk problems, so the first type of sub-pixel 31 closer to the central area 41 has a smaller degree of brightness reduction. In the same cylindrical lens 4, there can be any number of dimming sub-pixel columns 33 and extinction sub-pixel columns 34.

[0090] Based on the same inventive concept, an embodiment of the present invention provides a vehicle, including the head-up display device provided by any embodiment of the present invention, and a windshield.

[0091] Fig.14 is a schematic diagram of a structure of a carrier provided by an embodiment of the present invention, with reference to Fig.14The image source 1 outputs the image light, and the image light propagates to the curved reflector 5 after passing through the cylindrical grating 2. The curved reflector 5 reflects the image light onto the windshield 6 of the vehicle, and the windshield 6 then reflects the image light into the eye box 8. When the human eye observes the image light, a virtual image 7 is seen.

[0092] The curved reflector 5 and / or the windshield 6 are free-form surfaces, which have a non-uniform effect on the optical path. In order to meet the specification requirements during the design process, the plane where the image source 1 is located is not perpendicular to the main optical axis, so there is a phenomenon of symmetry destruction. As a result, the head-up display device has a non-uniform effect on imaging, that is, the imaging optical path causes increased crosstalk in some areas and eliminated crosstalk in some areas.

[0093] Based on the same inventive concept, an embodiment of the present invention provides a design method for a head-up display device, the head-up display device comprising an image source 1 and a lenticular lens 2; the image source 1 is used to generate a left-eye image beam and a right-eye image beam; the lenticular lens 2 is located on the propagation path of the left-eye image beam and the right-eye image beam, and is used to split the left-eye image beam and the right-eye image beam for projection; the image source 1 comprises a plurality of sub-pixels 3; Fig.15 is a flow chart of a design method of a head-up display device provided by an embodiment of the present invention, with reference to Fig.15 , the design methods include:

[0094] S101, acquiring a plurality of light crosstalk regions on a cylindrical grating.

[0095] Optionally, first obtain the light on the receiving surface, the receiving surface refers to the plane where the eye box is located, and the light on the receiving surface represents the light seen by the user during the use of the head-up display device. Then determine the crosstalk light in the light on the receiving surface, trace the crosstalk light on the receiving surface back to the lenticular grating 2, find the distribution of the crosstalk light on the lenticular grating 2, and obtain multiple light crosstalk areas on the lenticular grating 2 according to the distribution of the crosstalk light on the lenticular grating 2.

[0096] S102. Divide the lenticular grating into at least two lenticular partitions according to the plurality of light crosstalk regions, wherein the lenticular partitions include at least two cylindrical lenses, and the at least two lenticular partitions include a first lenticular partition and a second lenticular partition; wherein the first lenticular partition includes the light crosstalk region.

[0097] If the sub-pixels 3 near the edge of the cylindrical lens 4 on the image source 1 are turned off indiscriminately, the sub-pixels 3 without crosstalk problems will also be turned off, and the resolution of the head-up display device will be reduced, affecting the image quality. By distinguishing between the light crosstalk area and the non-light crosstalk area, the impact of turning off the sub-pixels 3 or reducing the brightness of the sub-pixels 3 on the resolution can be reduced, thereby improving the image quality while reducing the crosstalk phenomenon.

[0098] S103, controlling some of the sub-pixels in the first lenticular lens partition to be first-type sub-pixels, wherein the first-type sub-pixels are configured to reduce light emission brightness or turn off.

[0099] By reducing the brightness or turning off the first type of sub-pixel 31 and reducing the light incident on the first cylindrical mirror partition 21, the light that will cause crosstalk problems can be reduced or even eliminated. The reason for only reducing the light incident on the first cylindrical mirror partition 21 is that if the light incident on the second cylindrical mirror partition 22 without crosstalk problems is also reduced, the light emission of the sub-pixel of the image source 1 will be reduced, resulting in a decrease in the resolution of the head-up display device and affecting the imaging quality. However, if only the light incident on the first cylindrical mirror partition 21 is reduced, the light that causes crosstalk can be accurately reduced, and at the same time, the imaging quality of the second cylindrical mirror partition 22 will not be affected, reducing the impact on the resolution of the head-up display device and improving the image quality output by the head-up display device.

[0100] Optionally, after controlling some of the sub-pixels 3 in the first lenticular partition 21 to be the first type of sub-pixels 31 , the design method of the head-up display device further includes: arranging the sub-pixels 3 except the first type of sub-pixels 31 to form a display pattern.

[0101] The sub-pixels 3 other than the first-type sub-pixels 31 are second-type sub-pixels. The first-type sub-pixels 31 are configured to reduce the luminance or turn off. If the first-type sub-pixels 31 participate in imaging, the final image will be incomplete or have color difference. Therefore, when the sub-pixels are arranged to form a display pattern, the first-type sub-pixels 31 that cannot emit light normally need to be excluded, and then the second-type sub-pixels are combined and arranged into the final image.

[0102] The design method of the head-up display device provided in the embodiment of the present invention reduces the light incident on the first column mirror partition by only extinguishing the first type of sub-pixels or reducing the brightness of the first type of sub-pixels, thereby alleviating the crosstalk problem of the head-up display device; at the same time, since the light incident on the second column mirror partition 22 is not affected, the problem of resolution reduction of the head-up display device due to the reduction of output light is reduced.

[0103] Fig.16 is a flow chart of a design method of a head-up display device provided by an embodiment of the present invention, with reference to Fig.16 , the design method of the head-up display device includes:

[0104] S201, acquiring a plurality of light crosstalk regions on a cylindrical grating.

[0105] S202, obtaining the stray light density distribution in a plurality of light crosstalk areas.

[0106] Specifically, the intensity of stray light in the light crosstalk area is not evenly distributed. The stray light intensity in some light crosstalk areas is relatively large and the stray light distribution density is relatively large; the stray light intensity in some light crosstalk areas is relatively small and the stray light distribution density is relatively small.

[0107] S203. Divide the lenticular grating into at least two lenticular partitions according to the plurality of light crosstalk regions, wherein the lenticular partitions include at least two cylindrical lenses, and the at least two lenticular partitions include a first lenticular partition and a second lenticular partition; wherein the first lenticular partition includes the light crosstalk region.

[0108] S204. Acquire multiple configuration schemes corresponding to the first type of sub-pixels in the multiple light crosstalk areas according to the distribution of stray light density in the multiple light crosstalk areas, wherein the multiple configuration schemes include configuration scheme one or configuration scheme two, configuration scheme one includes reducing the luminous brightness of the first type of sub-pixels, and configuration scheme two includes extinguishing the first type of sub-pixels.

[0109] Optionally, configuration scheme one also includes: in a light crosstalk region where the stray light is denser, the first type of sub-pixel 31 reduces the light emitting brightness to a greater extent.

[0110] Specifically, in a light crosstalk area with a larger stray light distribution density, the crosstalk light density is larger, and the first type of sub-pixel 31 therein should reduce the luminous brightness more or even turn off to reduce the crosstalk light; in a light crosstalk area with a smaller stray light distribution density, the crosstalk light density is smaller, and the first type of sub-pixel 31 therein should reduce the luminous brightness more, so as to make the resolution of the head-up display device as high as possible.

[0111] Based on the same inventive concept, an embodiment of the present invention provides a control method for a head-up display device. Fig.17 is a flow chart of a control method of a head-up display device provided by an embodiment of the present invention, with reference to Fig.17 , the control method of the head-up display device includes:

[0112] S301. Preset multiple points in the eye box and calibrate a brightness adjustment strategy for each point. The brightness adjustment strategy is formed by any design method provided by the embodiment of the present invention.

[0113] Specifically, the light emitted by the same sub-pixel 3 is incident on different positions of the cylindrical lens 2 at different observation positions. Correspondingly, for different observation positions, the light incident on the gap between the same cylindrical lens 4 may be emitted by different sub-pixels 3. Therefore, different brightness adjustment strategies need to be designed for different points in the eye box.

[0114] S302: Use a detection device to detect the target position of the human eye.

[0115] Exemplarily, the detection device includes a driver monitoring system (DMS).

[0116] S303: According to the target position, select a brightness adjustment strategy corresponding to the point where the target position is located.

[0117] The control method of the head-up display device provided in the embodiment of the present invention designs corresponding sub-pixel brightness adjustment strategies for different points in the eye box. During the operation of the head-up display device, the head-up display device can dynamically switch the sub-pixel brightness adjustment strategy according to the position of the human eye, so that when the human eye is in the eye box, a low-crosstalk image can be observed.

[0118] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A head-up display device, characterized in that: include: An image source, the image source being used to generate a left-eye image beam and a right-eye image beam; A lenticular grating, located on the propagation paths of the left-eye image beam and the right-eye image beam, for splitting and projecting the left-eye image beam and the right-eye image beam; the lenticular grating includes at least two lenticular partitions, each of which includes at least two cylindrical lenses; the at least two lenticular partitions include a first lenticular partition and a second lenticular partition; The image source includes a plurality of sub-pixels, wherein the sub-pixels include a first type of sub-pixels, and the first type of sub-pixels are configured to reduce light luminance or be turned off; in both the first lenticular partition and the second lenticular partition, the first lenticular partition includes the first type of sub-pixels.

2. The head-up display device according to claim 1, characterized in that: A plurality of cylindrical lenses are arranged along a first direction; The cylindrical lens comprises a central region and an edge region, the geometric center of the cylindrical lens is located in the central region, and along the first direction, the edge region is located at the periphery of the central region; The orthographic projection of the first type of sub-pixel on the plane where the lenticular grating is located is located in the edge area.

3. The head-up display device according to claim 2, characterized in that: The first-type sub-pixels in the same row form a first-type sub-pixel column; In the first lenticular partition, a plurality of first-type sub-pixel columns are periodically arranged along the first direction.

4. The head-up display device according to claim 2, characterized in that: The first-type sub-pixels in the same row form a first-type sub-pixel column; The edge region includes a first edge region and a second edge region, and in the same cylindrical lens, the first edge region and the second edge region are located on both sides of the central region; In the first lenticular partition, the first type of sub-pixel columns are located in the first edge region; Alternatively, in the first lenticular subregion, the first type of sub-pixel columns are located in the second edge region.

5. The head-up display device according to claim 2, characterized in that: The first-type sub-pixels in the same row form a first-type sub-pixel column; The edge region includes a first edge region and a second edge region, and in the same cylindrical lens, the first edge region and the second edge region are located on both sides of the central region; In the first cylindrical lens partition, the same first-type sub-pixel column is located in the first edge region and the second edge region of adjacent cylindrical lenses.

6. The head-up display device according to claim 1, characterized in that: It also includes a curved reflector, which is located on the propagation paths of the split left-eye image light beam and the right-eye image light beam.

7. The head-up display device according to claim 2, characterized in that: The first-type sub-pixels in the same row form a first-type sub-pixel column; The first-type sub-pixel columns include dimming sub-pixel columns and extinction sub-pixel columns, the first-type sub-pixels in the dimming sub-pixel columns are configured to reduce light emission brightness, and the first-type sub-pixels in the extinction sub-pixel columns are configured to be extinguished; The first lenticular sub-region includes the dimming sub-pixel column and / or the extinction sub-pixel column.

8. The head-up display device according to claim 7, characterized in that: In the first lenticular subregion, the edge region includes one dimming sub-pixel column or one extinction sub-pixel column.

9. The head-up display device according to claim 8, characterized in that: The at least two lenticular subareas further include a third lenticular subarea; The first lenticular partition includes the dimming sub-pixel column, and the third lenticular partition includes the extinction sub-pixel column; or the first lenticular partition includes the extinction sub-pixel column, and the third lenticular partition includes the dimming sub-pixel column.

10. The head-up display device according to claim 7, characterized in that: The same edge area includes the dimming sub-pixel column and the extinction sub-pixel column; Along the first direction, in the same cylindrical lens, the dimming sub-pixel column is located between the extinction sub-pixel column and the central area.

11. The head-up display device according to claim 7, characterized in that: The dimming sub-pixel column in the same edge area includes a first dimming sub-pixel column and a second dimming sub-pixel column, and the light emitting brightness of the first type of sub-pixels in the first dimming sub-pixel column is greater than the light emitting brightness of the first type of sub-pixels in the second dimming sub-pixel column; Along the first direction, in the same cylindrical lens, the first dimming sub-pixel column is located between the second dimming sub-pixel column and the central area.

12. A carrier, characterized in that: It comprises the head-up display device according to any one of claims 1 to 11, and a windshield.

13. A design method for a head-up display device, characterized in that: The head-up display device includes an image source and a lenticular lens; the image source is used to generate a left-eye image beam and a right-eye image beam; the lenticular lens is located on the propagation paths of the left-eye image beam and the right-eye image beam, and is used to split and project the left-eye image beam and the right-eye image beam; the image source includes a plurality of sub-pixels; The design method comprises: Acquire a plurality of light crosstalk regions on the cylindrical grating; According to the plurality of light crosstalk regions, the lenticular grating is divided into at least two lenticular partitions, the lenticular partitions include at least two cylindrical lenses, and the at least two lenticular partitions include a first lenticular partition and a second lenticular partition; wherein the first lenticular partition includes the light crosstalk region; Controlling a portion of the sub-pixels in the first lenticular lens partition to be first-type sub-pixels; wherein the first-type sub-pixels are configured to reduce light luminance or turn off.

14. The design method according to claim 13, characterized in that: After acquiring a plurality of light crosstalk areas on the cylindrical grating, the method further includes: Obtaining the stray light density distribution of a plurality of the light crosstalk areas; Controlling a portion of the sub-pixels in the first lenticular lens partition to be first-type sub-pixels comprises: According to the stray light density distribution in the multiple light crosstalk areas, multiple configuration schemes corresponding to the first type of sub-pixels in the multiple light crosstalk areas are obtained, wherein the multiple configuration schemes include configuration scheme one or configuration scheme two, configuration scheme one includes reducing the luminous brightness of the first type of sub-pixels, and configuration scheme two includes extinguishing the first type of sub-pixels.

15. The design method according to claim 14, characterized in that: The first configuration scheme also includes: in the light crosstalk area where the stray light is denser, the first type of sub-pixel reduces the light luminance to a greater extent.

16. The design method according to claim 13, characterized in that: After controlling some of the sub-pixels in the first lenticular lens partition to be sub-pixels of the first type, the method further includes: The sub-pixels other than the first type of sub-pixels are arranged to form a display pattern.

17. A method for controlling a head-up display device, characterized in that: include: Preset multiple points in the eye box, and calibrate a brightness adjustment strategy for each of the points, wherein the brightness adjustment strategy is formed by the design method according to any one of claims 13 to 16; Using a detection device to detect a target position of a human eye; According to the target position, a brightness adjustment strategy corresponding to the point where the target position is located is selected.

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