Head-up display device and design method and control method therefor, vehicle

Abstract

The embodiment of the application provides a head-up display device and 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 application comprises: an image source, the image source is used for generating left-eye image light beams and right-eye image light beams; a cylindrical grating, the cylindrical grating comprises at least two cylindrical sub-zones, and the cylindrical sub-zone comprises at least two cylindrical lenses; the at least two cylindrical sub-zones comprise a first cylindrical sub-zone and a second cylindrical sub-zone; the image source comprises a plurality of sub-pixels, the sub-pixels comprise a first type of sub-pixel, the first type of sub-pixel is configured to reduce luminous brightness or be extinguished; in the first cylindrical sub-zone and the second cylindrical sub-zone, the first cylindrical sub-zone comprises the first type of sub-pixel.The head-up display device and the design method and the control method thereof and the carrier provided by the embodiment of the application can alleviate the crosstalk problem, and simultaneously alleviate the problem of resolution reduction caused by extinguishing the sub-pixel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of head-up display, in particular to a head-up display device and a design method and a control method thereof, and a vehicle. BACKGROUND

[0002] With the popularity of automobiles, automobiles are becoming more and more intelligent. In order to improve driving safety and make the driver pay more attention to 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] A common AR-HUD uses a special cylindrical lens grating to split light, so that the left eye and the right eye of a person see different pictures and are fused into a 3D effect picture in the user's brain. However, such a cylindrical lens grating is prone to crosstalk problems, resulting in the intersection of left and right eye images. SUMMARY

[0004] The present application provides a head-up display device and a design method and a control method thereof, and a vehicle, to reduce the crosstalk problem and reduce the resolution degradation problem caused by extinguishing the pixel points.

[0005] In a first aspect, the present application provides a head-up display device, comprising:

[0006] An image source, configured to generate a left-eye image light beam and a right-eye image light beam;

[0007] A cylindrical lens grating, located on the propagation path of the left-eye image light beam and the right-eye image light beam, configured to split and project the left-eye image light beam and the right-eye image light beam; the cylindrical lens grating comprises at least two cylindrical lens partitions, and each cylindrical lens partition comprises at least two cylindrical lenses; the at least two cylindrical lens partitions comprise a first cylindrical lens partition and a second cylindrical lens partition.

[0008] The image source comprises a plurality of sub-pixels, the sub-pixels comprise a first type of sub-pixel, the first type of sub-pixel is configured to reduce luminous intensity or be extinguished; the first type of sub-pixel is included in the first cylindrical lens partition among the first cylindrical lens partition and the second cylindrical lens partition.

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

[0010] 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 the edge region is located at the periphery of the central region along the first direction.

[0011] The first type of sub-pixel is projected onto the edge region in the plane where the cylindrical lens grating is located.

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

[0013] In the first lenticular sub-region, the first-type sub-pixel columns are periodically arranged along the 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, and the first edge region and the second edge region are located on two sides of the central region in the same lenticular lens.

[0016] In the first lenticular sub-region, the first-type sub-pixel column is located in the first edge region.

[0017] Alternatively, in the first lenticular sub-region, the first-type sub-pixel column is 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, and the first edge region and the second edge region are located on two sides of the central region in the same lenticular lens.

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

[0021] Optionally, the head-up display device further includes a curved mirror, and the curved mirror is located on the propagation path of the split left-eye image light beam and 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 sub-pixel column includes a dimming sub-pixel column and an extinguishing sub-pixel column, the first-type sub-pixels in the dimming sub-pixel column are configured to reduce the luminous brightness, and the first-type sub-pixels in the extinguishing sub-pixel column are configured to be extinguished.

[0024] The first lenticular sub-region includes a dimming sub-pixel column and / or an extinguishing sub-pixel column.

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

[0026] Optionally, the at least two lenticular sub-regions further include a third lenticular sub-region.

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

[0028] Optionally, the same edge region comprises the dimming sub-pixel column and the extinction sub-pixel column.

[0029] In the same column lens along the first direction, the dimming sub-pixel column is located between the extinction sub-pixel column and the central region.

[0030] Optionally, the dimming sub-pixel column in the same edge region comprises a first dimming sub-pixel column and a second dimming sub-pixel column, and the luminous intensity of the first type of sub-pixel in the first dimming sub-pixel column is greater than the luminous intensity of the first type of sub-pixel in the second dimming sub-pixel column.

[0031] In the same column lens along the first direction, the first dimming sub-pixel column is located between the second dimming sub-pixel column and the central region.

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

[0033] In a third aspect, an embodiment of the present application provides a design method of a head-up display device, the head-up display device comprising an image source and a lenticular grating; the image source is configured to generate a left-eye image light beam and a right-eye image light beam; the lenticular grating is located on the propagation path of the left-eye image light beam and the right-eye image light beam, and is configured to split and project the left-eye image light beam and the right-eye image light beam; the image source comprises a plurality of sub-pixels.

[0034] The design method comprises:

[0035] Obtaining a plurality of crosstalk regions of light rays on the lenticular grating;

[0036] According to the plurality of crosstalk regions of light rays, the lenticular grating is divided into at least two lenticular sub-regions, the lenticular sub-regions comprise at least two column lenses, and the at least two lenticular sub-regions comprise a first lenticular sub-region and a second lenticular sub-region; wherein the first lenticular sub-region comprises a crosstalk region of light rays.

[0037] Controlling part of the sub-pixels in the first lenticular sub-region to be first type sub-pixels; wherein the first type sub-pixels are configured to reduce luminous intensity or be extinguished.

[0038] Optionally, after obtaining the plurality of crosstalk regions of light rays on the lenticular grating, the method further comprises:

[0039] Obtaining a stray light density distribution of the plurality of crosstalk regions of light rays;

[0040] Controlling part of the sub-pixels in the first lenticular sub-region to be first type sub-pixels comprises:

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

[0042] Optionally, the configuration scheme one further includes that the first type of sub-pixels reduce greater luminous intensity in the light crosstalk area with denser stray light.

[0043] Optionally, after the first type of sub-pixels in part of the first lenticular sub-areas are controlled, the method further includes:

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

[0045] In a fourth aspect, an embodiment of the present application provides a control method of a head-up display device, including:

[0046] A plurality of points are preset in the eyebox, and a luminance adjustment strategy is labeled for each point, the luminance adjustment strategy being formed by the design method of the third aspect;

[0047] A target position of a human eye is detected by using a detection device;

[0048] According to the target position, a luminance adjustment strategy corresponding to the point where the target position is located is selected.

[0049] The head-up display device provided by the embodiment of the present application reduces the luminous intensity of the first type of sub-pixels or extinguishes the first type of sub-pixels, so that the light incident to the first lenticular sub-area is reduced, and the light incident to the second lenticular sub-area is not affected, the light causing the crosstalk problem is reduced, and the crosstalk problem of the head-up display device is alleviated; meanwhile, the light incident to the second lenticular sub-area is not affected, and the problem of resolution reduction of the head-up display device due to the reduction of output light is reduced. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

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

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

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

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

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

[0058] Figure 9 is a structural schematic diagram of still another head-up display device provided by an embodiment of the present application;

[0059] Figure 10 is a structural schematic diagram of still another head-up display device provided by an embodiment of the present application;

[0060] Figure 11 is a structural schematic diagram of still another head-up display device provided by an embodiment of the present application;

[0061] Figure 12 is a structural schematic diagram of still another head-up display device provided by an embodiment of the present application;

[0062] Figure 13 is a structural schematic diagram of still another head-up display device provided by an embodiment of the present application;

[0063] Figure 14 is a structural schematic diagram of a carrier provided by an embodiment of the present application;

[0064] Figure 15 is a flowchart of a design method of a head-up display device provided by an embodiment of the present application;

[0065] Figure 16 is a flowchart of a design method of a head-up display device provided by an embodiment of the present application;

[0066] Figure 17 is a flowchart of a control method of a head-up display device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0067] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended to serve only to explain the present application, but not to limit the present application. In addition, it should be noted that only the parts related to the present application are shown in the accompanying drawings for the convenience of description.

[0068] The research finds that the crosstalk problem mainly occurs at the arc edge of the cylindrical lens in the cylindrical lens grating. To eliminate the crosstalk, one way is to turn off one pixel closest to the arc edge of the cylindrical lens in the image source. However, this way will turn off the pixel without crosstalk problem at the same time, which will lead to the resolution of the head-up display device to be reduced. The conventional cognition is based on the cylindrical lens grating commonly applied in the stereoscopic display device, and all the pixels at the arc edge of the cylindrical lens are usually turned off. The research finds that the head-up display device has a non-uniform influence on imaging, that is, the imaging light path causes the crosstalk to increase in some areas and the crosstalk to disappear in some areas.

[0069] Figure 1 is a schematic diagram of a stereoscopic structure of a head-up display device provided by an embodiment of the present application, referring to Figure 1 , Figure 2 is a schematic diagram of a structure of a head-up display device provided by an embodiment of the present application, referring 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 comprises an image source 1 and a cylindrical lens grating 2. The image source 1 is used to generate left-eye image light beams and right-eye image light beams. The cylindrical lens grating 2 is located on the propagation path of the left-eye image light beams and the right-eye image light beams, and the cylindrical lens grating 2 is used to split and project the left-eye image light beams and the right-eye image light beams. The cylindrical lens grating 2 is a splitting element, which deflects the left-eye image light beams and the right-eye image light beams towards different directions to project the left-eye image light beams to the left eye and the right-eye image light beams to the right eye. The cylindrical lens grating 2 comprises at least two cylindrical lens partitions 20, and the cylindrical lens partition 20 comprises at least two cylindrical lenses 4. The at least two cylindrical lens partitions 20 comprise a first cylindrical lens partition 21 and a second cylindrical lens partition 22. The image source 1 comprises 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 uniformly arranged on the image source 1. The sub-pixels 3 comprise first-type sub-pixels 31, and the first-type sub-pixels 31 are configured to reduce the luminous intensity or be turned off. That is, the luminous intensity is reduced on the basis of the original luminous intensity, for example, by multiplying a proportionality coefficient or other ways. Or, the original luminous intensity is changed to be not luminous. The first-type sub-pixels 31 are included in the first cylindrical lens partition 21 among the first cylindrical lens partition 21 and the second cylindrical lens partition 22. The first-type sub-pixels 31 are arranged in the first cylindrical lens partition 21, and the first-type sub-pixels 31 are not arranged in the second cylindrical lens partition 22. The light emitted by the first-type sub-pixels 31 will be incident into the first cylindrical lens partition 21, but not incident into the second cylindrical lens partition 22. There can be a small amount of crosstalk light in the second cylindrical lens partition 22, or there is no crosstalk light, so that the first-type sub-pixels 31 are not needed to be arranged, and the resolution of the second cylindrical lens partition 22 is at least improved, thereby the resolution of the head-up display device is improved. Wherein, Figure 2Take two cylindrical lens sub-zones 20 as an example, but not limited to. In other embodiments, the cylindrical lens grating 2 can also be provided with other numbers of cylindrical lens sub-zones 20. The present embodiment does not limit the number of sub-pixels 3 covered by each cylindrical lens 4.

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

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

[0072] As an example, the first cylindrical lens sub-zone 21 is a region with the problem of crosstalk, and the light emitted by the first type of sub-pixel 31 will pass through the first cylindrical lens sub-zone 21. The second cylindrical lens sub-zone 22 is a region without the problem of crosstalk. The first type of sub-pixel 31 can be determined by the reverse tracing method: first, the image output by the head-up display device is received by the receiver to determine the position of the crosstalk light in the image received by the receiver, and then the sub-pixel 3 on the image source 1 outputting these crosstalk lights is obtained by reverse tracing the light path according to the position of the crosstalk light, which 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 crosstalk light. In the first cylindrical lens sub-zone 21, there are positions with crosstalk light and positions without crosstalk light.

[0073] By reducing the brightness or extinguishing the first type of sub-pixel 31, the crosstalk light incident on the first cylindrical lens sub-zone 21 is reduced, which can reduce or even eliminate the light that causes the problem of crosstalk. The reason for reducing only the light incident on the first cylindrical lens sub-zone 21 is that if the light incident on the second cylindrical lens sub-zone 22 without the problem of crosstalk is also reduced, the light-emitting amount 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 lens sub-zone 21 is reduced, the crosstalk light can be accurately reduced, and at the same time, the imaging quality of the second cylindrical lens sub-zone 22 will not be affected, the impact on the resolution of the head-up display device will be reduced, and the image quality output by the head-up display device will be improved.

[0074] The head-up display provided by the embodiment of the present application reduces the light that causes the crosstalk problem by only reducing the light-emitting brightness or extinguishing the first-type sub-pixels 31, so that the light incident on the first-lens partition 21 is reduced, and the light incident on the second-lens partition 22 is not affected, thereby reducing the crosstalk problem of the head-up display. Meanwhile, since the light incident on the second-lens partition 22 is not affected, the problem of resolution reduction of the head-up display due to the reduction of the output light is reduced.

[0075] Figure 4 is a structural schematic diagram of still another head-up display provided by the embodiment of the present application, referring to Figure 4 The plurality of cylindrical lenses 4 are arranged along the first direction X. The cylindrical lens 4 includes a central region 41 and an edge region 40, and the geometric center of the cylindrical lens 4 is located in the central region 41. Along the first direction X, the edge region 40 is located at the periphery of the central region 41. The first-type sub-pixel 31 is projected onto the edge region 40 in the plane of the lenslet array 2.

[0076] Referring to Figure 4 The edge regions 40 of the cylindrical lenses 4 abut together, and there may be a gap between the edge regions 40 of the adjacent two cylindrical lenses 4. The light passing through the gap will cause the crosstalk problem, and therefore it is necessary to reduce the light of the image source 1 incident on the edge region 40 to reduce the crosstalk problem. In the image source 1, the light emitted by the sub-pixel 3 projected onto the edge region 40 in the plane of the lenslet array 2 will mostly be incident on the edge region 40, causing the crosstalk problem. Therefore, the first-type sub-pixel 31 that will cause the crosstalk problem is projected onto the edge region 40 in the plane of the lenslet array 2. Reducing the light-emitting brightness or extinguishing the first-type sub-pixel 31 projected onto the edge region 40 in the plane of the lenslet array 2 can reduce the light of the image source 1 incident on the edge region 40, thereby reducing the crosstalk problem.

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

[0078] Combine Figure 3 and Figure 5 As shown, in order to alleviate the crosstalk problem, if Figure 5 If all the first type sub-pixel columns 32 in the image are turned off or have their brightness 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 In the arrangement shown, 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. This 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 consistent with human common sense.

[0079] Figure 6 is a structural diagram of another head-up display device provided by an embodiment of the present invention. Figure 7 is a structural diagram of another head-up display device provided by an embodiment of the present invention. Figure 8 This is a structural diagram 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-type sub-pixels 31 in the same row form a first-type sub-pixel column 32, and the edge region includes a first edge region 42 and a second edge region 43. In the same lenticular lens 4, the first edge region 42 and the second edge region 43 are located on either side of the central region 41. In the first lenticular subregion 21, the first-type sub-pixel column 32 is located in the first edge region 42, or, in the first lenticular subregion 21, the first-type sub-pixel column 32 is located in the second edge region 43.

[0080] Optionally, the first-type sub-pixels 31 in the same row constitute 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. 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] Combine Figure 6 、 Figure 7 and Figure 8 As shown, the first type of sub-pixel column 32 can be located in the first edge area 42 or the second edge area 43 , and can also be located in the first edge area 42 and the second edge area 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 mirror can reflect the split left-eye image light beam and right-eye image light beam onto the windshield of the vehicle, and the windshield can reflect the left-eye image light beam and right-eye image light beam into the eyebox. Meanwhile, the curved mirror has a converging effect on light rays, which can prevent the split left-eye image light beam and right-eye image light beam from diverging. The eyebox refers to a distribution range of eyeballs that can see a complete image on the driver side.

[0084] Figure 9 is a structural schematic diagram of another head-up display device provided by an embodiment of the present application, referring to Figure 9 The first-type sub-pixels 31 in the same row form a first-type sub-pixel column 32. The first-type sub-pixel column 32 includes a dimmed sub-pixel column 33 and an extinguished sub-pixel column 34. The first-type sub-pixels 31 in the dimmed sub-pixel column 33 are configured to reduce luminance, and the first-type sub-pixels 31 in the extinguished sub-pixel column 34 are configured to be extinguished. The first-lenslet sub-region 21 includes the dimmed sub-pixel column 33 and / or the extinguished sub-pixel column 34.

[0085] The first-type sub-pixels 31 that emit crosstalk light rays have different crosstalk degrees. The first-type sub-pixels 31 that emit dense crosstalk light rays have a large crosstalk degree and need to be reduced in luminance or extinguished, and the first-type sub-pixels 31 that emit sparse crosstalk light rays have a small crosstalk degree and can be reduced in luminance to ensure high resolution of the head-up display device. Exemplarily, the first-type sub-pixels 31 that have a large crosstalk degree are extinguished, and the extinguished first-type sub-pixels 31 in the same row form the extinguished sub-pixel column 34. The first-type sub-pixels 31 that have a small crosstalk degree are reduced in luminance, and the first-type sub-pixels that are reduced in luminance in the same row form the dimmed sub-pixel column 33. Therefore, the first-lenslet sub-region 21 can include only the dimmed sub-pixel column 33, only the extinguished sub-pixel column 34, or both the dimmed sub-pixel column 33 and the extinguished sub-pixel column 34.

[0086] Optionally, the edge region 40 in the first-lenslet sub-region 21 includes a dimmed sub-pixel column 33 or an extinguished sub-pixel column 34. The first-type sub-pixels 31 in the edge region 40 in the orthographic projection of the plane on which the lenticular grating 2 is located are reduced in luminance or extinguished, which can reduce crosstalk. The first-type sub-pixels 31 in different first-type sub-pixel columns 32 have different crosstalk degrees, and therefore the first-type sub-pixels 31 in the first-type sub-pixel columns 32 need to be reduced in luminance or extinguished according to the crosstalk degrees of the first-type sub-pixels 31, so as to form the dimmed sub-pixel column 33 or the extinguished sub-pixel column 34.

[0087] Figure 10 is a structural schematic diagram of another head-up display device provided by an embodiment of the present application, Figure 11is a structural schematic diagram of still another head-up display device provided by an embodiment of the present application, in combination with Figure 10 and Figure 11 As shown, the at least two cylindrical lens sub-zones 20 further include a third cylindrical lens sub-zone 23. The first cylindrical lens sub-zone 21 includes a dimmed sub-pixel column 33, and the third cylindrical lens sub-zone 23 includes an extinguished sub-pixel column 34, or the first cylindrical lens sub-zone 21 includes the extinguished sub-pixel column 34, and the third cylindrical lens sub-zone 23 includes the dimmed sub-pixel column 33. The dimmed sub-pixel column 33 is composed of the first type of sub-pixels 31 with reduced luminance, and the extinguished sub-pixel column 34 is composed of the first type of sub-pixels 31 that are extinguished.

[0088] Figure 12 is a structural schematic diagram of still another head-up display device provided by an embodiment of the present application, in combination with Figure 12 The same edge region 40 includes the dimmed sub-pixel column 33 and the extinguished sub-pixel column 34, and along the first direction X, in the same cylindrical lens 4, the dimmed sub-pixel column 33 is located between the extinguished sub-pixel column 34 and the central region 41. Figure 13 is a structural schematic diagram of still another head-up display device provided by an embodiment of the present application, in combination with Figure 13 The dimmed sub-pixel column 33 of the same edge region 40 includes a first dimmed sub-pixel column 331 and a second dimmed sub-pixel column 332, the luminance of the first type of sub-pixels 31 in the first dimmed sub-pixel column 331 is greater than the luminance of the first type of sub-pixels 31 in the second dimmed sub-pixel column 332, and along the first direction X, in the same cylindrical lens 4, the first dimmed sub-pixel column 331 is located between the second dimmed sub-pixel column 332 and the central region 41.

[0089] Since the crosstalk problem is usually caused by the gap between the cylindrical lenses 4, in the first cylindrical lens sub-zone 21, the closer the sub-pixel 3 is to the edge of the cylindrical lens 4, the more serious the crosstalk problem caused by the sub-pixel 3, and therefore the closer the first type of sub-pixel 31 is to the edge of the cylindrical lens 4, the greater the degree of luminance reduction of the first type of sub-pixel 31 or the first type of sub-pixel 31 is set to be extinguished, and the closer the first type of sub-pixel 31 is to the central region 41, the less serious the crosstalk problem caused by the first type of sub-pixel 31, and therefore the closer the first type of sub-pixel 31 is to the central region 41, the smaller the degree of luminance reduction of the first type of sub-pixel 31. In the same cylindrical lens 4, there can be any number of dimmed sub-pixel columns 33 and extinguished sub-pixel columns 34.

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

[0091] Figure 14 is a structural schematic diagram of a vehicle provided by an embodiment of the present application, in combination with Figure 14, the image source 1 outputs image light, the image light propagates to the curved mirror 5 after passing through the cylindrical lens grating 2, the curved mirror 5 reflects the image light to the windshield 6 of the vehicle, the windshield 6 reflects the image light into the eyebox 8, and the human eye observes the image light to generate the virtual image 7.

[0092] The curved mirror 5 and / or the windshield 6 are free curved surfaces, and the influence on the optical path is non-uniform, and the plane where the image source 1 is located is not perpendicular to the principal axis during the design process, and therefore the symmetry is destroyed. Therefore, the head-up display device has a non-uniform influence on imaging, that is, the imaging light path causes some areas to have increased crosstalk and some areas to have disappeared crosstalk.

[0093] Based on the same inventive concept, the embodiment of the present application provides a design method of a head-up display device, the head-up display device comprising an image source 1 and a cylindrical lens grating 2; the image source 1 is used to generate a left-eye image light beam and a right-eye image light beam; the cylindrical lens grating 2 is located on the propagation path of the left-eye image light beam and the right-eye image light beam, and is used to split and project the left-eye image light beam and the right-eye image light beam; the image source 1 comprises a plurality of sub-pixels 3; Figure 15 is a flowchart of a design method of a head-up display device provided by the embodiment of the present application, referring to Figure 15 , the design method comprises:

[0094] S101, obtaining a plurality of crosstalk regions of light rays on the cylindrical lens grating.

[0095] Optionally, the light rays on the receiving surface are obtained first, the receiving surface refers to the plane where the eyebox is located, and the light rays on the receiving surface represent the light rays observed by the user during use of the head-up display device. Then, the crosstalk light rays in the light rays on the receiving surface are determined, the crosstalk light rays on the receiving surface are traced back to the cylindrical lens grating 2, the distribution of the crosstalk light rays on the cylindrical lens grating 2 is found, and the plurality of crosstalk regions of light rays on the cylindrical lens grating 2 are obtained according to the distribution of the crosstalk light rays on the cylindrical lens grating 2.

[0096] S102, dividing the cylindrical lens grating into at least two cylindrical lens partitions according to the plurality of crosstalk regions of light rays, the cylindrical lens partition comprises at least two cylindrical lenses, and the at least two cylindrical lens partitions comprise a first cylindrical lens partition and a second cylindrical lens partition; wherein the first cylindrical lens partition comprises the crosstalk region of light rays.

[0097] If the sub-pixels 3 close to the edges of the cylindrical lenses 4 on the image source 1 are not distinguished and turned off, the sub-pixels 3 without the crosstalk problem will also be turned off, the resolution of the head-up display device is thus reduced, and the imaging quality is affected. The crosstalk region of light rays and the non-crosstalk region of light rays are distinguished, the influence of turning off the sub-pixels 3 or reducing the brightness of the sub-pixels 3 on the resolution is reduced, and the imaging quality is improved while the crosstalk phenomenon is reduced.

[0098] S103, control the sub-pixels in the part of the first lenticular zone to be first type sub-pixels. The first type sub-pixels are configured to reduce luminous intensity or be extinguished.

[0099] By reducing the luminous intensity or extinguishing the first type sub-pixels 31, the light rays incident on the first lenticular zone 21 are reduced, which can reduce or even eliminate the light rays that cause the crosstalk problem. The reason for reducing only the light rays incident on the first lenticular zone 21 is that if the light rays incident on the second lenticular zone 22 without the crosstalk problem are also reduced, the luminous intensity of the sub-pixels of the image source 1 will be reduced, which will cause the resolution of the head-up display device to decrease and affect the imaging quality. However, if only the light rays incident on the first lenticular zone 21 are reduced, the light rays that cause the crosstalk can be accurately reduced, and at the same time the imaging quality of the second lenticular zone 22 is not affected, the resolution of the head-up display device is less affected, and the image quality output by the head-up display device is improved.

[0100] Optionally, after the sub-pixels 3 in the part of the first lenticular zone 21 are controlled to be the first type sub-pixels 31, the design method of the head-up display device further comprises: arranging the sub-pixels 3 other than the first type 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 luminous intensity or be extinguished, and 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 normally emit light need to be excluded, and then the second type sub-pixels are combined and arranged to form the final image.

[0102] The design method of the head-up display device provided by the embodiment of the application reduces the light rays incident on the first lenticular zone by extinguishing only the first type sub-pixels or reducing the luminous intensity of the first type sub-pixels, thereby reducing the crosstalk problem of the head-up display device. At the same time, since the light rays incident on the second lenticular zone 22 are not affected, the problem of resolution decrease of the head-up display device due to the reduction of output light rays is reduced.

[0103] Figure 16 is a flowchart of a design method of a head-up display device provided by an embodiment of the application, referring to Figure 16 , the design method of the head-up display device comprises:

[0104] S201, acquire a plurality of light ray crosstalk areas on a lenticular grating.

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

[0106] Specifically, the intensity of stray light in the light crosstalk area is not uniformly distributed, the intensity of stray light in part of the light crosstalk area is larger, and the distribution density of stray light is larger; the intensity of stray light in part of the light crosstalk area is smaller, and the distribution density of stray light is smaller.

[0107] S203, according to the plurality of light crosstalk areas, the cylindrical lens grating is divided into at least two cylindrical lens partitions, the cylindrical lens partition includes at least two cylindrical lenses, and the at least two cylindrical lens partitions include a first cylindrical lens partition and a second cylindrical lens partition; wherein the first cylindrical lens partition includes the light crosstalk area.

[0108] S204, according to the distribution of the intensity of stray light in the plurality of light crosstalk areas, a plurality of configuration schemes corresponding to the first type of sub-pixel in the plurality of light crosstalk areas are obtained, wherein the plurality of configuration schemes include configuration scheme one or configuration scheme two, the configuration scheme one includes reducing the luminous brightness of the first type of sub-pixel, and the configuration scheme two includes extinguishing the first type of sub-pixel.

[0109] Optionally, the configuration scheme one further includes: the first type of sub-pixel 31 reduces greater luminous brightness in the light crosstalk area with more intensive stray light.

[0110] Specifically, the greater the distribution density of stray light in the light crosstalk area, the greater the density of crosstalk light, and the first type of sub-pixel 31 therein should reduce greater luminous brightness or even be extinguished to reduce the crosstalk light; the smaller the distribution density of stray light in the light crosstalk area, the smaller the density of crosstalk light, and the first type of sub-pixel 31 therein should reduce smaller luminous brightness, so that the resolution of the head-up display device is as high as possible.

[0111] Based on the same inventive concept, the embodiment of the present application provides a control method of a head-up display device, Figure 17 is a flowchart of the control method of the head-up display device provided by the embodiment of the present application, referring to Figure 17 , the control method of the head-up display device includes:

[0112] S301, a plurality of points are preset in the eyebox, and a luminance adjustment strategy is labeled for each point, and the luminance adjustment strategy is formed by any design method provided by the embodiment of the present application.

[0113] Specifically, the position of the light emitted by the same sub-pixel 3 incident to the cylindrical lens grating 2 is different for different observation positions. Correspondingly, for different observation positions, the light incident to the gap between the same cylindrical lens 4 can be emitted by different sub-pixels 3. Therefore, different luminance adjustment strategies need to be designed for different points in the eyebox.

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

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

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

[0117] The control method of the head-up display device provided by the embodiment of the present application respectively designs corresponding sub-pixel brightness adjustment strategies for different points in the eyebox. In the working process of the head-up display device, the head-up display device can dynamically switch the brightness adjustment strategies of the sub-pixels according to the position of the human eye, so that when the human eye is in the eyebox, a low-crosstalk image can be observed.

[0118] It should be noted that the above only describes the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments, mutual combinations and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application 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 configured 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, and configured to split and project the left-eye image beam and the right-eye image beam; the lenticular grating comprising at least two lenticular sub-regions, each of which comprises at least two cylindrical lenses; the at least two lenticular sub-regions comprising a first lenticular sub-region and a second lenticular sub-region; The image source includes a plurality of sub-pixels, the sub-pixels include a first type of sub-pixels, and the first type of sub-pixels are configured to reduce luminous brightness or be extinguished; 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, wherein: The plurality of cylindrical lenses are arranged along a first direction; The cylindrical lens includes a central area and an edge area, the geometric center of the cylindrical lens is located in the central area, and along the first direction, the edge area is located outside the central area; The orthographic projection of the first type of sub-pixels on the plane where the lenticular lens 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 subregion, 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, wherein: 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. 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 column is located in the first edge area; 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. 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 lens partition, the same first-type sub-pixel column is located in the first edge region and the second edge region of adjacent lenticular lenses.

6. The head-up display device according to claim 1, wherein: It also 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.

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 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 luminance, and the first type of sub-pixels in the extinction sub-pixel columns are configured to be extinguished; The first lenticular subregion 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, wherein: 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 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; 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 vehicle, characterized in that: The invention 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 includes: Acquiring a plurality of light crosstalk regions on the lenticular grating; According to the plurality of light crosstalk regions, the lenticular grating is divided into at least two lenticular partitions, wherein the lenticular partition includes 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 partition to be first-type sub-pixels; wherein the first-type sub-pixels are configured to reduce luminous brightness or be turned off.

14. The design method according to claim 13, characterized in that: After acquiring a plurality of light crosstalk areas on the lenticular grating, the method further includes: Obtaining the stray light density distribution of the plurality of light crosstalk areas; Controlling a portion of the sub-pixels in the first lenticular partition to be first-type sub-pixels includes: 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 more dense, the first type of sub-pixel reduces the luminous brightness more.

16. The design method according to claim 13, characterized in that: After controlling some of the sub-pixels in the first lenticular 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; detecting a target position of a human eye using a detection device; 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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