Projection display window sheet, projection device, and vehicle

Abstract

The present application relates to a window sheet, and discloses a projection display window sheet, comprising a window sheet body (1), wherein a correction part (2) is arranged in at least one region of the window sheet body (1), and the correction part (2) is adapted to correct light rays passing through the region, so as to realize zoom correction, translation correction and / or distortion correction of a projection image. The present application also discloses a projection device comprising the projection display window sheet and a vehicle. The projection display window sheet can locally adjust light rays, so that the projection image formed by the light rays passing through the projection display window sheet can meet the needs of more people for projection display.

Description

Technical Field

[0001] This invention relates to window panes, and more specifically, to a projection display window pane. Furthermore, this invention also relates to a projection device and a vehicle. Background Technology

[0002] With the development of modern automobiles, the functions of cars have also undergone tremendous changes, and adding other equipment to meet people's personalized needs has become a new trend. Nowadays, projection display technology used in cars is becoming increasingly indispensable, enabling drivers to easily understand vehicle information and improving driving safety. Currently, commonly used projection display technologies include DLP and HUD.

[0003] In-vehicle projectors need to be installed on the exterior of the vehicle during use. To prevent the influence of the external environment on the projector, a window is usually installed on its exterior. This window can be any of the following types: a standard flat window, a curved window, a circular window, or a spherical window. Furthermore, in-vehicle projectors need to project different images depending on their required functions, and some even require adjustment of the projection angle. Therefore, during projection, the projected image may be distorted, or it may require magnification correction, translation correction, or reduction correction. However, the degree of distortion may vary depending on the location of the projected image. For example, during projection, images closer to the horizontal distance of the projector installation point have less distortion, sometimes even no distortion, while images farther away from the installation point have greater distortion.

[0004] The conventional solution to the above problems in existing technologies is to design the lens or window of the vehicle projector to make the entire lens or window shape capable of adjusting light; or to control the emitted light from the projector through program control to adjust it to a suitable light pattern. However, when designing the entire lens or window, the light needs adjustment in different areas may vary; some areas may require divergence processing, while others may require convergence processing. Furthermore, program control of the projector light may be unsuitable when the lens or window at the projector needs to be replaced. Moreover, the adjustment patterns for light requiring divergence or convergence processing in different areas may also be inconsistent. Currently, few people have considered this problem, so even with improvements to the lens or window of the vehicle projector, the light emitted from the lens still does not meet the expectations of some users. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a projection display window that can locally adjust the light so that the projected image formed by the light passing through the projection display window can meet the projection display needs of more people.

[0006] The second technical problem to be solved by the present invention is to provide a projection device, wherein the projection display window of the projection device can locally adjust the light so that the projected image formed by the light passing through the projection display window can meet the projection display needs of more people.

[0007] The third technical problem to be solved by the present invention is to provide a vehicle in which the projection display window can locally adjust the light so that the projected image formed by the light passing through the projection display window can meet the projection display needs of more people.

[0008] To address the aforementioned technical problems, the first aspect of the present invention provides a projection display window, comprising a window body, wherein a correction part is provided in at least one region on the window body, the correction part being adapted to correct light passing through the region, so as to realize scaling correction, translation correction and / or distortion correction of the projected image.

[0009] Preferably, the correction part is protrudingly disposed on the light-emitting surface of the window body.

[0010] Preferably, the correction section includes a distortion correction section, an image magnification section, an image reduction section, and / or an image translation section. The light passing through the distortion correction section can correct the distortion of the projected image, the light passing through the image magnification section can diverge the light, the light passing through the image reduction section can converge the light, and the light passing through the image translation section can translate the light.

[0011] More preferably, the light-emitting surfaces of the distortion correction section, the image magnification section, the image reduction section, and the image translation section are respectively configured as one of a concave spherical surface, a convex spherical surface, a convex aspherical surface, a concave aspherical surface, and a freeform surface, so as to form a lens-like structure.

[0012] More preferably, the light-emitting surfaces of the distortion correction section, the image magnification section, the image reduction section, and the image translation section are all set as free-form surfaces to form lens-like structures.

[0013] More preferably, the light-emitting surface of the correction part is configured as a double-conical surface or a saddle-shaped surface.

[0014] More preferably, the surface shape equation of the light-emitting surface of the correction part is:

[0015]

[0016] in, k x k y These are the quadratic surface coefficients in the x and y directions, respectively; or

[0017]

[0018] in, K x K y are the quadratic surface coefficients in the x and y directions, respectively, and AR, BR, CR, DR, AP, BP, CP, and DP are the higher-order coefficients of the aspherical surface.

[0019] Preferably, the window body and the correction part are integrally formed.

[0020] In a second aspect, the present invention provides a projection device, the projection device including a projection unit and a projection display window as described in any of the technical solutions of the first aspect above.

[0021] Thirdly, the present invention provides a vehicle, the vehicle including the projector described in any of the technical solutions of the second aspect above.

[0022] Through the above technical solution, the projection display window of the present invention, by setting a correction part in at least one area of ​​the window body, can locally adjust the projection light pattern according to the shape of the window and the requirements of the emitted light of the projection device, without affecting the light pattern of the emitted light in other areas, so that the light emitted from the window can meet the projection display needs of more people.

[0023] Other advantages of the present invention and the technical effects of preferred embodiments will be further described in the following detailed description. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a projection display window according to a specific embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a window body according to a specific embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of a projection display window according to another specific embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the window body according to another specific embodiment of the present invention;

[0028] Figure 5 yes Figure 3The diagram shown illustrates distortion correction for the projection display window.

[0029] Figure 6 This is a schematic diagram of distortion correction according to a specific embodiment of the present invention. Figure 1 ;

[0030] Figure 7 This is a schematic diagram of distortion correction of a projection display window according to a specific embodiment of the present invention;

[0031] Figure 8 yes Figure 7 A schematic diagram of distortion correction for the projection display window;

[0032] Figure 9 This is a schematic diagram of the structure of a projection display window according to a specific embodiment of the present invention;

[0033] Figure 10 yes Figure 9 A magnified and corrected schematic diagram of the projection display window;

[0034] Figure 11 This is a schematic diagram of the structure of a projection display window according to a specific embodiment of the present invention;

[0035] Figure 12 yes Figure 11 A schematic diagram of the translation correction of the projection display window;

[0036] Figure 13 This is a schematic diagram of the structure of a projection display window according to a specific embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures

[0038] 1. Window body 2. Correction section

[0039] 11. Light-emitting surface of the window panel

[0040] 21 Distortion correction section 22 Image reduction section

[0041] 23 Image magnification section 24 Image translation section

[0042] 211 Distortion Correction Section Light-Emitting Surface Detailed Implementation

[0043] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] It should be understood that, based on the projection display window, "front" refers to the direction in which light rays exit through the projection display window, and "back" is the opposite direction. The terminology used is based on the directions or positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0046] In the basic embodiments of the present invention, such as Figure 1 As shown, a projection display window is provided, including a window body 1. At least one region on the window body 1 is provided with a correction part 2, which is adapted to correct the light passing through the region so as to realize scaling correction, translation correction and / or distortion correction of the projected image.

[0047] According to the present invention, the window body 1 can be a conventional straight window, an arc-shaped window, an annular window, or a spherical window, or it can be any irregularly shaped window. The correction part 2 can individually satisfy the effects of reduction correction, magnification correction, translation correction, or distortion correction, or it can simultaneously satisfy the effects of reduction / magnification correction, translation correction, and distortion correction. Specifically, the correction part 2 can be specifically designed according to its required function and the shape of the window body 1. The correction part 2 can be disposed on the light-incident surface of the window body 1, or it can be disposed on the light-exit surface 11 of the window body 1. The correction part 2 can be integrally formed with the window body 1, or it can be detachably connected to the window body 1.

[0048] When the projection display window provided in the above basic embodiment is in operation, the projection display window is installed and fixed, and positioned in the light-emitting direction of the projection unit. This allows the light emitted from the projection unit to pass through the projection display window. Part of the light emitted from the projector passes directly through the window body 1, while the rest is corrected by the correction part 2 on the window body 1 and then combines with the light emitted from other positions on the window body 1 to form a projected light pattern, illuminating the ground around the vehicle to form the desired projection pattern. The correction part 2 can perform scaling correction, translation correction, and / or distortion correction of the projected pattern.

[0049] The projection display window provided in the above basic embodiment can locally adjust the projection light pattern according to the shape of the window body 1 and the requirements of the emitted light of the projection device by setting the correction part 2 in at least one area of ​​the window body 1, without affecting the light pattern of the emitted light in other areas, so that the light emitted from the window can meet the projection display needs of more people.

[0050] The correction part 2 can be disposed on the light-incident surface of the window body 1 or on the light-exiting surface 11 of the window body 1. The correction part 2 can be recessed inside the window body 1 or protruding from it. In one specific embodiment of the present invention, the correction part 2 protrudes from the light-exiting surface 11 of the window body 1. This reduces the amount of material used in manufacturing the projection display window, thereby lowering manufacturing costs and effectively reducing the space occupied by the projector using the projection display window.

[0051] In one specific embodiment of the present invention, the correction unit 2 includes a distortion correction unit 21, an image magnification unit 23, an image reduction unit 22 and / or an image translation unit 24. The light passing through the distortion correction unit 21 can correct the distortion of the projected image, the light passing through the image magnification unit 23 can diverge the light, the light passing through the image reduction unit 22 can converge the light, and the light passing through the image translation unit 24 can translate the light.

[0052] Specifically, the distortion correction unit 21 can diverge or converge the passing light rays to correct the projected image. The distortion correction unit 21 enables distortion correction of the projected image; the image magnification unit 23 enables magnification of the projected image; the image reduction unit 22 enables reduction of the projected image; and the image translation unit 24 enables translation of the projected image.

[0053] In one specific embodiment of the present invention, the light-emitting surfaces of the distortion correction section 21, the image magnification section 23, the image reduction section 22, and the image translation section 24 are respectively configured as one of a concave spherical surface, a convex spherical surface, a convex aspherical surface, a concave aspherical surface, and a freeform surface, so as to form a lens-like structure.

[0054] Specifically, the light-emitting surfaces of the distortion correction section 21, the image magnification section 23, the image reduction section 22, and the image translation section 24 are provided with concave spherical surfaces, convex spherical surfaces, convex aspherical surfaces, concave aspherical surfaces, or freeform surfaces with different curvatures.

[0055] More specifically, the lens-like structure is a structure similar to a lens structure, and the light-emitting surfaces of the distortion correction section 21, the image magnification section 23, the image reduction section 22, and the image translation section 24 are set to one of spherical, aspherical, and freeform surfaces, which can ensure the uniformity of the light rays emitted from the distortion correction section 21, the image magnification section 23, the image reduction section 22, and the image translation section 24, thereby ensuring the uniformity of the formed projected image.

[0056] In order to reduce the size of the projection display window while lowering manufacturing costs, in one specific embodiment of the present invention, the light-emitting surfaces of the distortion correction unit 21, the image magnification unit 23, the image reduction unit 22, and the image translation unit 24 are all set as free-form surfaces, forming lens-like structures respectively. The free-form surface design allows for the design of relevant surface shapes according to light pattern requirements, resulting in better correction effects and reduced space occupied by the projection display window.

[0057] The equation of this freeform surface can be an extended polynomial, and the equation of the extended polynomial is:

[0058] z = a 10 x+a 01 y+a 20 x 2 +a 11 xy+a 02 y 2 +a 30 x 3 +a 21 x 2 y+a 12 xy 2 +a 03 y 3 +a 40 x 4 +a 31 x 3 y+a 22 x 2 y 2 +a 13 xy 3 +a 04 y 4 +a 50 x 5 +a 41 x 4 y+a 32 x 3 y 2 +a 23 x 2 y 3 +a 14 xy 4 +a 05 y 5 +a 60 x6 +a 51 x 5 y+a 42 x 4 y 2 +a 33 x 3 y 3 +a 24 x 2 y 4 +a 15 xy 5 +a 06 y 6 +a 70 x 7 +a 61 x 6 y+a 52 x 5 y 2 +a 43 x 4 y 3 +a 34 x 3 y 4 +a 25 x 2 y 5 +a 16 xy 6 +a 07 y7+a 80 x 8 +a 71 x 7 y+a 62 x 6 y 2 +a 53 x 5 y 3 +a 44 x 4 y 4 +a 35 x 3 y 5 +a 26 x 2 y 6 +a 17 xy 7 +a 08 y 8 +a 90 x 9 +a 81 x 8 y+a 72 x 7 y 2 +a 63 x 6 y 3 +a 54 x5 and 4 +a 45 x 4 and 5 +a 36 x 3 and 6 +a 27 x 2 and 7 +a 18 xy 8 +a 09 and 9 +a 100 x 10 +a 91 x 9 and 82 x 8 and 2 +a 73 x 7 and 3 +a 64 x 6 and 4 +a 55 x 5 and 5 +a 46 x 4 and 6 +a 37 x 3 and 7 +a 28 x 2 and 8 +a 19 xy 9 +a 010 y1 0 +a 110 x 11 +a 101 x 10 and 92 x 9 and 2 +a 83 x 8 and 3 +a 74 x 7 and 4 +a 65 x 6 and 5 +a 56 x 5 and 6 +a 47 x 4 and 7 +a 38 x 3 and 8 +a29 x 2 y 9 +a 110 xy 10 +a 011 y 11 +…;

[0059] where a 10 、a 01 、a 20 、a 11 、a 02 、a 30 、a 21 、a 12 、a 03 、a 40 、a 31 、a 22 、a 13 、a 04 、a 50 、a 41 、a 32 、a 23 、a 14 、a 05 、a 60 、a 51 、a 42 、a 33 、a 24 、a 15 、a 06 、a 70 、a 61 、a 52 、a 43 、a 34 、a 25 、a 16 、a 07 、a 80 、a 71 、a 62 、a 53 、a 44 、a 35 、a 26 、a 17 、a 08 、a 90 、a 81 、a 72 、a 63 、a 54 、a 45 、a 36 、a 27 、a 18 、a 09 、a 100 、a 91 、a 82 、a 73 、a64 a 55 a 46 a 37 a 28 a 19 a 010 a 110 a 101 a 92 a 83 a 74 a 65 a 56 a 47 a 38 a 29 a 110 and a 011 These are the coefficients for each item.

[0060] Specifically, the selection of the coefficients of the freeform surface of the light-emitting surface is related to the surface of the light-incident surface of the window body and the functions it needs to achieve. It can be designed by those skilled in the art based on the surface of the light-incident surface of the window body and the functions it needs to achieve.

[0061] Taking the distortion correction section 21 as an example, by setting the light-emitting surface 211 of the distortion correction section as a freeform surface, the distortion light shape can be adjusted. The adjustment process is as follows: Figures 5-6 or Figure 7 As shown, it can converge the light originally illuminating regions P1 and P2 to region P0, thereby correcting the distorted light shape. The light shape after correction by this distortion correction unit 21 is as follows: Figure 8 As shown, A is the original beam pattern, and B is the beam pattern after distortion correction.

[0062] Taking the image magnification section 23 as an example, the light-emitting surface of the image magnification section 23 is set as a freeform surface, which can diffuse the light passing through the image magnification section 23, thereby realizing image magnification. The adjustment process is as follows: Figure 9 As shown, it can diffuse the light originally illuminating region P1 to region P0, thereby achieving image magnification. The light pattern magnified by this image magnification unit 23 is as follows: Figure 10 As shown, A is the original light pattern, and B is the magnified light pattern.

[0063] Taking the image translation unit 24 as an example, by setting the light-emitting surface of the image translation unit 24 as a freeform surface, the light rays passing through the image translation unit 24 can be translated, thereby realizing the translation of the image. The adjustment process is as follows: Figure 11 As shown, it can shift the light originally illuminating region P1 to region P0, thereby achieving image translation. The light pattern after translation by the image translation unit 24 is as follows: Figure 12 As shown, A is the original light shape, and B is the light shape after translation.

[0064] In two specific embodiments of the present invention, taking the distortion correction part 21 as an example, the light-emitting surface 211 of the distortion correction part is a free-form surface, and the coefficients of its surface shape equation are shown in Table 1 or Table 2. The x and y of the equations shown in Table 1 and Table 2 are normalized according to R=15 to obtain the surface shape of the light-emitting surface 211 of the distortion correction part.

[0065] Table 1. Coefficients of one of the surface shape equations for the light-emitting surface of the distortion correction section.

[0066]

[0067]

[0068] Table 2. Coefficients of the second equation for the surface shape of the light-emitting surface of the distortion correction section.

[0069]

[0070]

[0071] In one specific embodiment of the present invention, taking the image reduction part 22 as an example, the light-emitting surface of the image reduction part 22 is a freeform surface, and the coefficients of its surface shape equation are shown in Table 3. The x and y of the equation shown in Table 3 are normalized according to R=15 to obtain the surface shape of the light-emitting surface of the image reduction part 22.

[0072] Table 3. Coefficients of the surface shape equation for the light-emitting surface of the image reduction section.

[0073] Value Value Value Value <![CDATA[a 10 ]]> 4.26697806 <![CDATA[a 01 ]]> 8.40586214 <![CDATA[a 20 ]]> 3.94083483 <![CDATA[a 11 ]]> -0.24998566 <![CDATA[a 02 ]]> -4.65379524 <![CDATA[a 30 ]]> 3.13712547 <![CDATA[a 21 ]]> -0.47345376 <![CDATA[a 12 ]]> 3.79935872 <![CDATA[a 03 ]]> -0.83027637 <![CDATA[a 40 ]]> 12.76083205 <![CDATA[a 31 ]]> 5.43616150 <![CDATA[a 22 ]]> 21.58087346 <![CDATA[a 13 ]]> -23.63920922 <![CDATA[a 04 ]]> 52.24047574 <![CDATA[a 50 ]]> -18.93345660 <![CDATA[a 41 ]]> 18.43713371 <![CDATA[a 32 ]]> -23.76388885 <![CDATA[a 23 ]]> 36.25039510 <![CDATA[a 14 ]]> -44.99151091 <![CDATA[a 05 ]]> 50.21983998 <![CDATA[a 60 ]]> -83.37827788 <![CDATA[a 51 ]]> -145.78639103 <![CDATA[a 42 ]]> -74.84720825 <![CDATA[a 33 ]]> 25.75831157 <![CDATA[a 24 ]]> -121.65274054 <![CDATA[a 15 ]]> 128.40303147 <![CDATA[a 06 ]]> -167.75989636 <![CDATA[a 70 ]]> 57.80742281 <![CDATA[a 61 ]]> 22.33398671 <![CDATA[a 52 ]]> 24.58730741 <![CDATA[a 43 ]]> -143.60065508 <![CDATA[a 34 ]]> 148.50753581 <![CDATA[a 25 ]]> -195.81430876 <![CDATA[a 16 ]]> 199.35280655 <![CDATA[a 07 ]]> -190.74350875 <![CDATA[a 80 ]]> 215.75552291 <![CDATA[a 71 ]]> 540.60252278 <![CDATA[a 62 ]]> 520.99008596 <![CDATA[a 53 ]]> 192.51190677 <![CDATA[a 44 ]]> -16.92969115 <![CDATA[a 35 ]]> -86.62471302 <![CDATA[a 26 ]]> 245.02929033 <![CDATA[a 17 ]]> -192.86724646 <![CDATA[a 08 ]]> 178.31371901 <![CDATA[a 90 ]]> -4.25445971 <![CDATA[a 81 ]]> 70.29003938 <![CDATA[a 72 ]]> 259.27123457 <![CDATA[a 63 ]]> 344.00672029 <![CDATA[a 54 ]]> -83.58442123 <![CDATA[a 45 ]]> 107.63518174 <![CDATA[a 36 ]]> -241.79951180 <![CDATA[a 27 ]]> 366.86974566 <![CDATA[a 18 ]]> -288.60070109 <![CDATA[a 09 ]]> 219.22416298

[0074] In one specific embodiment of the present invention, taking the image magnification section 23 as an example, the light-emitting surface of the image magnification section 23 is a freeform surface, and the coefficients of its surface shape equation are shown in Table 4. The x and y of the equation shown in Table 4 are normalized according to R=30 to obtain the surface shape of the light-emitting surface of the image magnification section 23.

[0075] Table 4. Coefficients of the surface shape equation for the light-emitting surface of the image magnification section.

[0076] Value Value Value <![CDATA[a 10 ]]> 2.7721018 <![CDATA[a 01 ]]> -3.6116710 <![CDATA[a 20 ]]> 14.5933822 <![CDATA[a 11 ]]> -2.7441975 <![CDATA[a 02 ]]> -3.64344400 <![CDATA[a 30 ]]> -75.6632540 <![CDATA[a 21 ]]> -28.7821836 <![CDATA[a 12 ]]> 37.9796904 <![CDATA[a 03 ]]> 17.7877019 <![CDATA[a 40 ]]> -126.5000225 <![CDATA[a 31 ]]> 138.8128747 <![CDATA[a 22 ]]> 22.2854980 <![CDATA[a 13 ]]> 28.0954424 <![CDATA[a 04 ]]> 34.9669702 <![CDATA[a 50 ]]> 495.4311062 <![CDATA[a 41 ]]> 240.4058520 <![CDATA[a 32 ]]> -6.8797657 <![CDATA[a 23 ]]> -65.4035988 <![CDATA[a 14 ]]> -75.0866380 <![CDATA[a 05 ]]> -1.2697036 <![CDATA[a 60 ]]> 182.5714573 <![CDATA[a 51 ]]> -319.4779358 <![CDATA[a 42 ]]> -98.5334727 <![CDATA[a 33 ]]> -197.8315080 <![CDATA[a 24 ]]> -40.0946214 <![CDATA[a 15 ]]> -49.8932827 <![CDATA[a 06 ]]> -47.8403556 <![CDATA[a 70 ]]> -838.6124510 <![CDATA[a 61 ]]> -369.5612341 <![CDATA[a 52 ]]> -288.6325399 <![CDATA[a 43 ]]> 146.6534611 <![CDATA[a 34 ]]> -123.2257395 <![CDATA[a 25 ]]> -102.3385878 <![CDATA[a 16 ]]> -11.2343999 <![CDATA[a 07 ]]> -48.2725846 <![CDATA[a 80 ]]> 120.2579949 <![CDATA[a 71 ]]> -112.8214021 <![CDATA[a 62 ]]> 90.1806717 <![CDATA[a 53 ]]> -8.5882797 <![CDATA[a 44 ]]> 25.8434461 <![CDATA[a 35 ]]> 16.9317307 <![CDATA[a 26 ]]> -9.3202125 <![CDATA[a 17 ]]> -14.0911858 <![CDATA[a 08 ]]> -23.5998558

[0077] In one specific embodiment of the present invention, taking the image translation unit 24 as an example, the light-emitting surface of the image translation unit 24 is a freeform surface, and the coefficients of its surface shape equation are shown in Table 5. The x and y of the equation shown in Table 5 are normalized according to R=15 to obtain the surface shape of the light-emitting surface of the image translation unit 24.

[0078] Table 5. Coefficients of the surface shape equation for the light-emitting surface of the image translation section.

[0079]

[0080]

[0081] To further reduce manufacturing costs while minimizing the space occupied by the projection display, in one specific embodiment of the invention, the light-emitting surface of the correction unit 2 is configured as a double-conical or saddle-shaped surface. A regular surface shape reduces the difficulty of manufacturing the projection display window, thereby lowering manufacturing costs.

[0082] In one specific embodiment of the present invention, the surface shape equation of the light-emitting surface of the correction part 2 is:

[0083]

[0084] in, k x k y These are the quadratic surface coefficients in the x and y directions, respectively; or

[0085]

[0086]

[0087] in, K x K y are the quadratic surface coefficients in the x and y directions, respectively, and AR, BR, CR, DR, AP, BP, CP, and DP are the higher-order coefficients of the aspherical surface.

[0088] According to the present invention, the selection of each coefficient of the light-emitting surface is related to the surface shape of the light-incident surface of the window body, and can be set by those skilled in the art based on the surface shape of the light-incident surface of the window body.

[0089] In one specific embodiment of the present invention, taking the image reduction part 22 as an example, the light-emitting surface of the image reduction part 22 is a saddle-shaped surface, and the formula for its surface shape equation is:

[0090]

[0091] The coefficients of the surface shape equation are shown in Table 6, which yields the surface shape of the light-emitting surface of the image reduction section 22.

[0092] Table 6. Coefficients of the surface shape equation for the light-emitting surface of the image reduction section.

[0093] Value Value Value Value Cx <![CDATA[3.71×10 -2 ]]> Cy <![CDATA[-8.28×10 -45 ]]> Kx 1.07 Ky <![CDATA[7.82×10 +85 ]]> AR <![CDATA[2.05×10 -4 ]]> BR <![CDATA[-2.37×10 -6 ]]> CR <![CDATA[1.15×10 -8 ]]> DR <![CDATA[-2.13×10 -11 ]]> AP <![CDATA[6.44×10 -1 ]]> BP <![CDATA[5.71×10 -1 ]]> CP <![CDATA[5.25×10 -1 ]]> DP <![CDATA[4.82×10 -1 ]]>

[0094] In one specific embodiment of the present invention, such as Figure 1 and Figure 4As shown, the window body 1 and the correction part 2 are integrally formed. This further facilitates the processing of the projection display window and also further improves the correction part 2's ability to correct light patterns.

[0095] In a relatively preferred embodiment of the present invention, such as Figure 4 and Figure 5 As shown, a projection display window is provided, including a window body 1. A distortion correction section 21 is disposed in region f on the window body 1. The window body 1 and the distortion correction section 21 are integrally formed. The light-emitting surfaces of the distortion correction section 21 are all set as free-form surfaces to form a lens-like structure. The light passing through the distortion correction section 21 can correct the distortion of the projected image. Specifically, the parameters of the free-form surface equation of the correction section can be set according to the surface shape of the light-incident surface of the window body.

[0096] The projection display window provided in the aforementioned preferred embodiment can correct the distortion of light passing through the area, allowing light that should have exited into area P1 or P2 to converge into area P0, such as... Figure 5 and Figure 6 As shown.

[0097] In another relatively preferred embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a projection display window is provided, including a window body 1. A distortion correction section 21 is provided in region f of the window body 1, and an image reduction section 22 is provided in region g. The light passing through the distortion correction section 21 can correct the distortion of the projected image, and the light passing through the image reduction section 22 can converge the light. The light-emitting surfaces of both the distortion correction section 21 and the image reduction section 22 are set as free-form surfaces to form lens-like structures respectively.

[0098] The projection display window provided in the preferred embodiment described above can correct the distortion of light passing through the distortion correction section 21, and can also converge the light passing through the image reduction section 22.

[0099] In another relatively preferred embodiment of the present invention, such as Figure 13 As shown, a projection display window is provided, including a window body 1. The window body 1 is provided with an image reduction section 22 and an image magnification section 23. The light passing through the image reduction section 22 can achieve light convergence, and the light passing through the image magnification section 23 can achieve light diffusion. The light-emitting surfaces of the image magnification section 23 and the image reduction section 22 are both set as free-form surfaces to form lens-like structures respectively.

[0100] The projection display window provided in the above-described preferred embodiment, such as Figure 13As shown, it can converge the light passing through the image reduction section 22, so that the light that should have been emitted to the P1 area is converged to the P2 area; and it can diffuse the light passing through the image magnification section 23, so that the light that should have been emitted to the P3 area is diffused to the P4 area.

[0101] Furthermore, embodiments of the present invention also provide a projection device, which includes a projection unit and a projection display window as described in the above embodiments, the projection display window being disposed in the light emission direction of the projection unit. This projector possesses at least the advantages of the aforementioned projection display window, which will not be elaborated further here.

[0102] Furthermore, embodiments of the present invention provide a vehicle in which the headlights include the projection devices described in the above embodiments. This vehicle possesses at least the advantages of the aforementioned projection devices, which will not be elaborated further here.

[0103] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A projection display window sheet, characterized by, The window sheet body (1) is provided with a correction part (2) in at least one area of the window sheet body (1), the correction part (2) is protrudingly arranged on the window sheet body light-out surface (11) of the window sheet body (1), the window sheet body (1) and the correction part (2) are integrally formed, and the correction part (2) is adapted to correct the light passing through the area to realize zoom correction, translation correction and distortion correction of the projected image. The correction part (2) comprises a distortion correction part (21), an image enlarging part (23), an image reducing part (22) and an image translation part (24), the light passing through the distortion correction part (21) can realize distortion correction of the projected image, the light passing through the image enlarging part (23) can realize divergence of the light, the light passing through the image reducing part (22) can realize convergence of the light, and the light passing through the image translation part (24) can realize translation of the light.

2. The projection display window pane of claim 1, wherein The light-out surfaces of the distortion correction part (21), the image enlarging part (23), the image reducing part (22) and the image translation part (24) are respectively one of concave spherical surface, convex spherical surface, convex aspherical surface, concave aspherical surface and free-form surface, to form a lens-like structure.

3. The projection display window pane of claim 1, wherein, The light-out surfaces of the distortion correction part (21), the image enlarging part (23), the image reducing part (22) and the image translation part (24) are respectively one of concave spherical surface, convex spherical surface, convex aspherical surface, concave aspherical surface and free-form surface, to form a lens-like structure.

4. The projection display window pane of claim 3, wherein, The light-out surface of the correction part (2) is a double-cone surface or a saddle surface.

5. The projection display window pane of claim 4, wherein, The surface equation of the light-out surface of the correction part (2) is: ， wherein , , k x , k y are quadratic surface coefficients in the x and y directions, respectively; or ， wherein , , k x , k y are quadratic surface coefficients of x direction and y direction, respectively, AR , BR , CR , DR , AP , BP , CP and DP are high order coefficients of aspherical surface.

6. A projection apparatus, characterized by comprising: The projection display window sheet comprises a projection unit and the projection display window sheet according to any one of claims 1-5.

7. A vehicle characterized by comprising: The projection device according to claim 6.

Images