Vehicle-mounted suspension display device

Abstract

The invention relates to a vehicle-mounted suspension display device. The in-vehicle floating display device according to one embodiment of the present invention comprises: an image generation device for outputting a projection image; and a mirror that reflects the projection image from the image generation device and outputs a floating image based on the inverted real image. The reflecting mirror comprises a deformation reflecting mirror or a deformation Fresnel concave reflecting mirror. As a result, it is possible to realize a large-screen clear floating image, and to reduce the feeling of fatigue caused by parallax of both eyes.

Description

TECHNICAL FIELD

[0001] The present application relates to a vehicle-mounted floating display device, and more particularly, to a vehicle-mounted floating display device capable of realizing a clear floating image of a large screen and reducing a sense of fatigue caused by binocular parallax. BACKGROUND

[0002] A vehicle is a device for moving a user who gets on in a desired direction. As a representative example, a car can be cited.

[0003] On the other hand, in order to facilitate a user who uses a vehicle, a vehicle-mounted floating display device is mounted in the inside of the vehicle.

[0004] For example, a display is configured at an instrument panel or the like to display various information. On the other hand, in order to display vehicle travel information or the like, in addition to the instrument panel, a variety of displays such as an AVN (Audio Video Navigation) display, a head-up display which outputs a projection image on a windshield, or the like are additionally installed on the vehicle.

[0005] On the other hand, the prior art document U.S. Pat. No. 5087116 discloses outputting a floating image using a Fresnel mirror and a general mirror.

[0006] However, according to the Fresnel mirror of the prior art document, there is a disadvantage that since aberration is generated, a focal length is formed in a stretched shape, resulting in an unclear image, and according to a different viewing position, binocular parallax becomes large, thereby causing a sense of fatigue. SUMMARY

[0007] Problems to be Solved by the Invention

[0008] The present application relates to a vehicle-mounted floating display device, and more particularly, to a vehicle-mounted floating display device capable of realizing a clear floating image of a large screen and reducing a sense of fatigue caused by binocular parallax.

[0009] On the other hand, the present application relates to a vehicle-mounted floating display device capable of realizing a clear floating image of a large screen and reducing a sense of fatigue caused by binocular parallax.

[0010] Means for Solving the Problems

[0011] In order to achieve the above-described problems to be solved, a vehicle-mounted floating display device according to one embodiment of the present application includes an image generation device which outputs a projection image, and a mirror which reflects the projection image from the image generation device and outputs a floating image based on an inverted real image, and the mirror includes a metamorphic mirror or a metamorphic Fresnel concave mirror.

[0012] In another aspect, the first axis of the anamorphic mirror or the anamorphic Fresnel concave mirror has a focal length different from a focal length of the second axis.

[0013] In another aspect, a distance between the image generating apparatus and the mirror is greater than a focal length of the mirror.

[0014] In another aspect, the vehicle-mounted floating display apparatus according to an embodiment of the present application can further include at least one of a phase delay plate, a half mirror, and a reflective polarizer disposed between the image generating apparatus and the mirror.

[0015] In another aspect, the vehicle-mounted floating display apparatus according to an embodiment of the present application further includes a second mirror that reflects the projection image from the image generating apparatus, and the mirror can reflect the projection image from the second mirror and output a floating image based on an inverted real image.

[0016] In another aspect, a distance between the image generating apparatus and the second mirror and a distance between the second mirror and the mirror are greater than a focal length of the mirror.

[0017] In another aspect, a distance between the image generating apparatus and the second mirror is less than a distance between the second mirror and the mirror.

[0018] In another aspect, the floating image reflected on the mirror can be reflected by a windshield of the vehicle and output to a predetermined area.

[0019] In another aspect, the vehicle-mounted floating display apparatus according to another embodiment of the present application includes an image generating apparatus that outputs a projection image, and a mirror that reflects the projection image from the image generating apparatus and outputs a floating image based on an inverted real image, and the mirror includes a Fresnel concave mirror having a gap of 0.3 mm to 0.5 mm or a Fresnel concave mirror having a curved reflective surface.

[0020] In another aspect, the vehicle-mounted floating display apparatus according to another embodiment of the present application further includes a second mirror that reflects the projection image from the image generating apparatus, and the mirror can reflect the projection image from the second mirror and output a floating image based on an inverted real image.

[0021] In another aspect, the vehicle-mounted floating display apparatus according to still another embodiment of the present application includes an image generating apparatus that outputs a projection image, a half mirror that reflects the projection image from the image generating apparatus, and first and second mirrors that are separated from each other and respectively reflect the projection image from the half mirror, thereby respectively outputting first and second floating images based on inverted real images, and the half mirror transmits the first and second floating images.

[0022] On the other hand, the first mirror and the second mirror can include a deformed mirror or a deformed Fresnel concave mirror having different focal lengths of a first axis and a second axis.

[0023] On the other hand, the first mirror and the second mirror can include a Fresnel concave mirror having a pitch of 0.3mm to 0.5mm or a Fresnel concave mirror having a curved reflecting surface.

[0024] On the other hand, the vehicle-mounted floating display device according to still another embodiment of the present application includes an image generating device outputting a projection image, first and second folding mirrors spaced apart from each other and reflecting the projection image from the image generating device, respectively, and a mirror reflecting the projection image from the first and second folding mirrors, respectively, thereby outputting first and second floating images based on inverted real images, respectively.

[0025] On the other hand, the mirror can include a deformed mirror or a deformed Fresnel concave mirror having different focal lengths of a first axis and a second axis.

[0026] On the other hand, the mirror can include a Fresnel concave mirror having a pitch of 0.3mm to 0.5mm or a Fresnel concave mirror having a curved reflecting surface.

[0027] Effects of the Invention

[0028] The vehicle-mounted floating display device according to one embodiment of the present application includes an image generating device outputting a projection image, and a mirror reflecting the projection image from the image generating device and outputting a floating image based on an inverted real image. The mirror includes a deformed mirror or a deformed Fresnel concave mirror. Thereby, a clear floating image of a large screen can be realized, and fatigue caused by binocular disparity can be reduced.

[0029] On the other hand, the mirror can include a deformed mirror or a deformed Fresnel concave mirror having different focal lengths of a first axis and a second axis.

[0030] On the other hand, a distance between the image generating device and the mirror is greater than a focal length of the mirror. Thereby, a clear floating image of a large screen can be realized, and fatigue caused by binocular disparity can be reduced.

[0031] On the other hand, the vehicle-mounted floating display device according to one embodiment of the present application can further include at least one of a phase delay plate, a half mirror, and a reflective polarizing mirror disposed between the image generating device and the mirror. Thereby, a clear floating image of a large screen can be realized, and fatigue caused by binocular disparity can be reduced.

[0032] In another aspect, the vehicle-mounted floating display device according to an embodiment of the present application further comprises a second mirror that reflects the projection image from the image generating device, and the mirror can reflect the projection image from the second mirror and output a floating image based on an inverted real image. Thus, a clear floating image with a large screen can be achieved, and fatigue caused by binocular parallax can be reduced.

[0033] In another aspect, the distance between the image generating device and the second mirror and the distance between the second mirror and the mirror are greater than the focal length of the mirror. Thus, a clear floating image with a large screen can be achieved, and fatigue caused by binocular parallax can be reduced.

[0034] In another aspect, the distance between the image generating device and the second mirror is less than the distance between the second mirror and the mirror. Thus, a clear floating image with a large screen can be achieved, and fatigue caused by binocular parallax can be reduced.

[0035] In another aspect, the floating image reflected on the mirror can be reflected by the windshield of the vehicle and output to a specified area. Thus, a clear floating image with a large screen can be achieved, and the size of the display device can be reduced.

[0036] In another aspect, the vehicle-mounted floating display device according to another embodiment of the present application comprises an image generating device that outputs a projection image, and a mirror that reflects the projection image from the image generating device and outputs a floating image based on an inverted real image; the mirror comprises a Fresnel concave mirror with a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror with a curved reflecting surface. Thus, a clear floating image with a large screen can be achieved, and the size of the display device can be reduced.

[0037] In another aspect, the vehicle-mounted floating display device according to another embodiment of the present application further comprises a second mirror that reflects the projection image from the image generating device, and the mirror can reflect the projection image from the second mirror and output a floating image based on an inverted real image. Thus, a clear floating image with a large screen can be achieved, and the size of the display device can be reduced.

[0038] In another aspect, the vehicle-mounted floating display device according to yet another embodiment of the present application comprises an image generating device that outputs a projection image, a semi-transparent mirror that reflects the projection image from the image generating device, and a first mirror and a second mirror that are separated from each other and respectively reflect the projection image from the semi-transparent mirror to respectively output a first floating image and a second floating image based on an inverted real image; the semi-transparent mirror transmits the first floating image and the second floating image. Thus, a clear floating image with a large screen can be achieved, and the size of the display device can be reduced.

[0039] On the other hand, the first and second mirrors can include anamorphic mirrors or anamorphic Fresnel concave mirrors having different focal lengths of a first axis and a second axis. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0040] On the other hand, the first and second mirrors can include Fresnel concave mirrors having a pitch of 0.3 to 0.5 mm or Fresnel concave mirrors having a curved reflecting surface. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0041] On the other hand, the vehicle-mounted floating display device according to still another embodiment of the present application includes an image generating device outputting a projection image, first and second folding mirrors separated from each other and reflecting the projection image from the image generating device, respectively, and a mirror reflecting the projection images from the first and second folding mirrors, respectively, thereby outputting first and second floating images based on inverted real images, respectively. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0042] On the other hand, the mirror can include anamorphic mirrors or anamorphic Fresnel concave mirrors having different focal lengths of a first axis and a second axis. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0043] On the other hand, the mirror can include Fresnel concave mirrors having a pitch of 0.3 to 0.5 mm or Fresnel concave mirrors having a curved reflecting surface. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 FIG. 1 is a diagram showing an example of a vehicle exterior and a vehicle interior.

[0045] Figures 2a to 2b FIG. 2 is a diagram illustrating a floating image displayed on a second display of FIG. 1. Figure 1

[0046] Figure 2c FIG. 3 is a diagram illustrating a floating image displayed on a first display of FIG. 1. Figure 1

[0047] Figures 3a to 3b FIG. 4 is a diagram referred to in the explanation of a vehicle-mounted floating display device related to the present application.

[0048] Figure 4 FIG. 5 is a diagram showing an example of an internal structure of a vehicle-mounted floating display device according to an embodiment of the present application.

[0049] ​​Figure 5 FIG. 1 is a diagram showing an example of an internal structure of a vehicle-mounted floating display device according to an embodiment of the present application.

[0050] Figures 6a to 6d Figures 4 to 5 FIG. 1 is a diagram showing an example of an internal structure of a vehicle-mounted floating display device according to an embodiment of the present application.

[0051] Figures 7a to 9 DETAILED DESCRIPTION

[0052] Hereinafter, the present application will be described in greater detail with reference to the accompanying drawings.

[0053] The suffixes "module" and "part" used in the following description are assigned or used merely to facilitate the disclosure in terms of the conciseness and ease of understanding, and the "module" and "part" can be used together or interchangeably.

[0054] Figure 1

[0055] Referring to the drawings, the vehicle 200 is operated by a plurality of wheels 103FR, 103FL, 103RL,... rotated by a power source, and by a steering wheel 150 for adjusting a traveling direction of the vehicle 200.

[0056] On the other hand, the vehicle 200 can further have a camera 195 or the like for acquiring an image of a front of the vehicle.

[0057] On the other hand, the vehicle 200 can have a plurality of displays 180a, 180b, 180h for displaying images, information, or the like inside the vehicle.

[0058] For example, among the plurality of displays 180a, 180b, 180h, the first display 180a can be an instrument panel display, the second display 180b can be an AVN (Audio Video Navigation) display, and the third display 180h can be a head-up display (HUD) that projects an image to a prescribed area Ara separate from a windshield WS, i.e., a HUD display.

[0059] On the other hand, the vehicle-mounted floating display device (100 of FIG. 3) according to the embodiment of the present application can display a floating image on an upper portion Arb of the second display 180b, or on an upper portion Ara of the first display 180a, or on the upper portion Ara of the first display 180a and on the upper portion Arb of the second display 180b, respectively. ​​​

[0060] On the other hand, the vehicle 200 described in this specification can be a concept including a vehicle having an engine as a power source, a hybrid vehicle having an engine and an electric motor as a power source, an electric vehicle having an electric motor as a power source, and the like.

[0061] Figures 2a to 2b is a diagram illustrating a floating image displayed on an upper portion of a second display of Figure 1

[0062] First, Figure 2a An example in which a floating image 210 is displayed on an upper portion Arb of an AVN display that is a second display 180b is illustrated.

[0063] Referring to the drawings, in a state in which a navigation image 210 is displayed on the AVN display that is the second display 180b, the in-vehicle floating display device 100 disposed at a back of the second display 180b can display a floating image 220 for providing information or the like.

[0064] In particular, since the floating image 220 is displayed on the upper portion of the second display 180b, various information or the like associated with the navigation image 210 can be provided, and thus visibility can be improved.

[0065] Figure 2b FIG. illustrates an example of an internal structure of the in-vehicle floating display device 100 for providing the floating image 210 of Figure 2a

[0066] Referring to the drawings, the in-vehicle floating display device 100 includes an image generation device 300 that outputs a projection image, and a mirror 325 that reflects the projection image from the image generation device 300 and outputs a floating image based on an inverted real image.

[0067] At this time, the mirror 325 includes a metamorphic mirror or a metamorphic Fresnel concave mirror. Thereby, a clear floating image of a large screen can be implemented, and a sense of fatigue caused by binocular disparity can be reduced.

[0068] As illustrated, the image generation device 300 is disposed at a lower portion of the second display 180b, and the mirror 325 can be disposed separately from a back of the second display 180b.

[0069] Thereby, the structure of the in-vehicle floating display device 100 can provide the floating image 220 to the upper portion of the second display 180b without protruding to the outside.

[0070] ​​Alternatively, the mirror 325 includes a Fresnel concave mirror 325 having a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror 325 having a curved reflecting surface. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0071] Figure 2c is a diagram illustrating a floating image displayed on an upper portion of a first display of Figure 1

[0072] In particular, Figure 2c is illustrated in an upper portion of an AVN display as the first display 180a.

[0073] Referring to the drawings, in a state in which a dashboard image 230 is displayed on a dashboard display as the first display 180a, the in-vehicle floating display device 100 disposed at a rear of the first display 180a can display a floating image 240 for providing information, etc.

[0074] In particular, since the floating image 240 is displayed on an upper portion of the first display 180a, various information, etc. associated with the dashboard image 230 can be provided, thereby improving visibility.

[0075] On the other hand, the floating image 240 can be moved, and thus interaction based on a driver and the floating image can be realized.

[0076] On the other hand, Figure 2c The in-vehicle floating display device 100 of Figure 2b Similarly, includes an image generation device 300 outputting a projection image, and a mirror 325 reflecting the projection image from the image generation device 300 and outputting a floating image based on an inverted real image.

[0077] At this time, the mirror 325 includes a metamorphic mirror or a metamorphic Fresnel concave mirror. Thereby, a clear floating image of a large screen can be realized, and fatigue caused by binocular disparity can be reduced.

[0078] Alternatively, the mirror 325 includes a Fresnel concave mirror 325 having a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror 325 having a curved reflecting surface. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0079] Figures 3a to 3b is a diagram referred to in a description of the in-vehicle floating display device related to the present application.

[0080] Figure 3a is a diagram illustrating a structure of the in-vehicle floating display device related to the present application. ​

[0081] Referring to the drawings, a vehicle-mounted levitation display device 100x related to the present application includes an image generating device 300x outputting a projection image, and a mirror 325x reflecting the projection image from the image generating device 300.

[0082] The levitation image reflected on the mirror 325x can be imaged at an image imaging position such as P1, P2, or P3, and thus perceived as being levitated in space.

[0083] On the other hand, in the case where a concave mirror or a Fresnel concave mirror is used as the mirror 325x, aberration is generated, the focal length is formed in a stretched shape, the image is not clear, and according to the difference in viewing position, the binocular parallax becomes large, having a disadvantage of greatly inducing a sense of fatigue.

[0084] Figure 3b is a diagram illustrating a focus shape at an image imaging position of P1, P2, or P3 of Figure 3a .

[0085] Figure 3b (a) of is a focus shape 310 at an image imaging position of P1, Figure 3b (b) of is a focus shape 320 at an image imaging position of P2, Figure 3b (c) of is a focus shape 330 at an image imaging position of P3.

[0086] When observing the focus shapes 310, 320, and 330 at the image imaging positions of P1, P2, and P3, respectively, it is known that, due to the generation of aberration, the focal length is stretched, and thus the levitation image is not clear and the binocular parallax becomes large according to the difference in viewing position, thereby greatly inducing a sense of fatigue.

[0087] In this regard, the present application proposes a scheme to realize a clear levitation image of a large screen and to reduce a sense of fatigue caused by binocular parallax. In this regard, the drawings of Figure 4 and thereafter are described.

[0088] Figure 4 is a diagram illustrating an example of an internal structure of a vehicle-mounted levitation display device according to an embodiment of the present application.

[0089] Referring to the drawings, a vehicle-mounted levitation display device 100 according to one embodiment of the present application includes an image generating device 300 outputting a projection image, and a mirror 325 reflecting the projection image from the image generating device 300 and outputting a levitation image based on an inverted real image.

[0090] On the other hand, the mirror 325 includes a deformed mirror or a deformed Fresnel concave mirror. Thereby, a clear floating image of a large screen can be realized, and a sense of fatigue caused by binocular disparity can be reduced.

[0091] Alternatively, the mirror 325 includes a Fresnel concave mirror 325 having a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror 325 having a curved reflecting surface. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0092] On the other hand, a distance d between the image generation device 300 and the mirror 325 is greater than a focal length of the mirror 325.

[0093] That is, if the focal length of the mirror 325 is f, in order to output a floating image based on an inverted real image, it is preferable that f < d.

[0094] Figure 5 FIG. 2 is a diagram illustrating an example of an internal structure of a vehicle-mounted floating display device according to another embodiment of the present application.

[0095] Referring to the drawings, a vehicle-mounted floating display device 100b according to another embodiment of the present application can include an image generation device 300 outputting a projection image, a second mirror 315 reflecting the projection image from the image generation device 300, and a mirror 325 reflecting the projection image from the second mirror 315 and outputting a floating image based on an inverted real image.

[0096] That is, unlike the embodiment of FIG. 1, the vehicle-mounted floating display device 100b can further have the second mirror 315. Figure 4

[0097] On the other hand, the image generation device 300 can be disposed at a position lower than the second mirror 315, and the second mirror 315 can be disposed at a position lower than the mirror 325.

[0098] On the other hand, a distance d2 between the image generation device 300 and the second mirror 315 is less than a distance d1 between the second mirror 315 and the mirror 325.

[0099] On the other hand, a sum (d1+d2) of the distance d2 between the image generation device 300 and the second mirror 315 and the distance d1 between the second mirror 315 and the mirror 325 is greater than a focal length of the mirror 325. Thereby, a clear floating image of a large screen can be realized, and a sense of fatigue caused by binocular disparity can be reduced.

[0100] That is, if the focal length of the mirror 325 is f, in order to output a floating image based on an inverted real image, it is preferable that f < (d1+d2).

[0101] ​On the other hand, like this, in the case where the second mirror 315 is also provided, in comparison with Figure 4 the size of the in-vehicle floating display device 100 can be reduced.

[0102] On the other hand, if the center of curvature of the mirror 325 is set as c, in the case where f < (d1+d2) < c, an inverted enlarged real image is generated, and in the case where (d1+d2) > c, an inverted reduced real image is generated.

[0103] On the other hand, in the case where the inverted reduced real image is used, the size of the image generation device 300, the in-vehicle floating display device 100, and the like must be made larger with respect to the floating image.

[0104] In this regard, the present application realizes a floating image based on an inverted enlarged real image. That is, if the center of curvature of the mirror 325 is set as c, in the case where f < (d1+d2) < c, this is realized.

[0106] On the other hand, this principle can be applied to Figure 4 . That is, if the center of curvature of the mirror 325 is set as c, this can be realized in the case where f < d < c.

[0107] On the other hand, in the case where the inverted enlarged real image is used, although a larger floating image with respect to the projected image of the image generation device 300 can be ensured, the resolution and the like can be reduced.

[0108] In this regard, in the present application, a deformed mirror or a deformed Fresnel concave mirror is used as the mirror 325. Thereby, a clear floating image of a large screen can be realized, and a sense of fatigue caused by binocular disparity can be reduced.

[0109] Alternatively, a Fresnel concave mirror 325 having a pitch of between 0.3 mm and 0.5 mm or a Fresnel concave mirror 325 having a curved reflecting surface is used as the mirror 325. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0110] Figures 6a to 6d is a diagram referred to in the description of Figures 4 to 5 .

[0111] Figure 6a A case where the mirror is a deformed mirror or a deformed Fresnel concave mirror is exemplified.

[0112] Referring to the drawings, the mirror 325b includes a deformed mirror or a deformed Fresnel concave mirror.

[0113] In a case where a deformation concave mirror or a deformation Fresnel concave mirror is used as the mirror 325b, up and down light diffusion and left and right light diffusion reduction design can be performed, and thus a floating image with clear quality and reduced fatigue feeling caused by binocular parallax can be generated.

[0114] On the other hand, the focal length of the first axis (for example, the x-axis) and the focal length of the second axis (for example, the y-axis) of the deformation mirror or the deformation Fresnel concave mirror can be different.

[0115] In the deformation mirror or the deformation Fresnel concave mirror, the focal length of the second axis (for example, the y-axis) is greater than the focal length of the first axis (for example, the x-axis) is illustrated in the drawing.

[0116] Figure 6b A case where the mirror is a Fresnel concave mirror is illustrated.

[0117] Referring to the drawing, the mirror 325 can include a Fresnel concave mirror.

[0118] Figure 6b The mirror 325 of the present embodiment has a left-right symmetrical pattern, a pitch PH of each pattern, a draft angle of each pattern, a reflecting surface SFa on which reflection is performed, and a non-reflecting inclined surface SFb.

[0119] For example, in a case where the pitch PH is 0.3 mm or less, haze is generated due to the increase of the inclined surface SFb and the scattering of light, and thus the image appears to be blurred.

[0120] On the other hand, in a case where the pitch PH is 0.5 mm or more, it is possible to recognize the stripes of the Fresnel concave mirror.

[0121] On the other hand, the mirror 325 is preferably a Fresnel concave mirror having a pitch PH of 0.3 mm to 0.5 mm. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0122] Figure 6c A case where the Fresnel concave mirror has a planar reflecting surface, Figure 6d A case where the Fresnel concave mirror has a curved reflecting surface is illustrated.

[0123] In the mirror 325 of the present embodiment, as illustrated in Figure 6b Figure 6c In a case where the reflecting surface SFa on which reflection is performed is a planar reflecting surface, the focal lengths of the reflecting surfaces are different, and thus quality degradation can occur.

[0124] On the other hand, in the mirror 325 of the present embodiment, as illustrated in Figure 6b Figure 6d ​​In the case where the reflecting surface SFa is a curved reflecting surface, as shown, the focal distances of the individual inclined surfaces can be made the same, whereby a clear floating image with little visual fatigue can be output.

[0125] That is, the mirror 325 is preferably a Fresnel concave mirror having a curved reflecting surface. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0126] Figures 7a to 9 FIG. 1 is a diagram showing a vehicle-mounted floating display device according to an embodiment of the present application.

[0127] First, Figure 7a FIG. 2 is a diagram showing a vehicle-mounted floating display device according to another embodiment of the present application.

[0128] Referring to the drawings, a vehicle-mounted floating display device 100c according to another embodiment of the present application includes an image generation device 300 outputting a projection image, and a mirror 325 reflecting the projection image from the image generation device 300 and outputting a floating image based on an inverted real image.

[0129] The mirror 325 includes a metamorphic mirror or a metamorphic Fresnel concave mirror.

[0130] Alternatively, the mirror 325 includes a Fresnel concave mirror 325 having a pitch of 0.3 to 0.5 mm or a Fresnel concave mirror 325 having a curved reflecting surface. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0131] On the other hand, the vehicle-mounted floating display device 100c according to another embodiment of the present application can further have at least one of a phase delay plate 333, a half mirror, and a reflective polarizing mirror 332 disposed between the image generation device 300 and the mirror 325.

[0132] In the drawing, a case is exemplified in which the projection image from the image generation device 300 is reflected on the phase delay plate 333 disposed between the image generation device 300 and the mirror 325, is reflected on the half mirror or the reflective polarizing mirror 332 disposed between the phase delay plate 333 and the image generation device 300, is incident to the mirror 325, and the incident projection image is reflected on the mirror 325, thereby outputting a floating image based on an inverted real image.

[0133] On the other hand, the phase delay plate 333 can have a quarter wave plate (QWP).

[0134] On the other hand, the reflective polarizing mirror 332 can transmit P-polarized light and reflect S-polarized light, or can reflect P-polarized light and transmit S-polarized light.

[0135] On the other hand, the distance between the phase delay plate 333 and the half mirror or reflective polarizer 332 can be smaller than the distance between the image generating device 300 and the phase delay plate 333, and smaller than the distance between the half mirror or reflective polarizer 332 and the mirror 325. Thereby, the size of the in-vehicle floating display device 100c can be reduced.

[0136] With such a phase delay plate 333 or half mirror or reflective polarizer 332, the size of the in-vehicle floating display device 100c can be reduced, and a clear floating image with a large screen can be realized, and fatigue caused by binocular disparity can be reduced.

[0137] Figure 7b FIG. 7 is a view showing an in-vehicle floating display device according to still another embodiment of the present application.

[0138] Referring to the drawings, an in-vehicle floating display device 100d according to still another embodiment of the present application includes an image generating device 300 outputting a projection image, a second mirror 323 reflecting the projection image from the image generating device 300, and a mirror 325 reflecting the projection image from the second mirror 323 and outputting a floating image based on an inverted real image.

[0139] The mirror 325 includes a deformable mirror or a deformable Fresnel concave mirror.

[0140] Alternatively, the mirror 325 includes a Fresnel concave mirror 325 with a pitch of 0.3 to 0.5 mm or a Fresnel concave mirror 325 with a curved reflecting surface. Thereby, a clear floating image with a large screen can be realized, and the size of the display device can be reduced.

[0141] On the other hand, the floating image reflected by the mirror 325 within the in-vehicle floating display device 100d can be reflected by the windshield WS of the vehicle and output to a prescribed region.

[0142] Here, the prescribed region, as a driver's line-of-sight region, can correspond to an eye box.

[0143] On the other hand, the distance between the image generating device 300 and the second mirror 323 can be smaller than the distance between the second mirror 323 and the mirror 325, and smaller than the distance between the mirror 325 and the windshield WS. Thereby, the size of the in-vehicle floating display device 100d can be reduced.

[0144] Finally, the floating image reflected on the mirror 325 is reflected by the windshield WS of the vehicle and output, and thus the size of the in-vehicle floating display device 100d can be reduced, and a clear floating image with a large screen can be realized, and fatigue caused by binocular disparity can be reduced.

[0145] Figure 8 is a diagram illustrating a vehicle-mounted floating display device according to still another embodiment of the present application.

[0146] Referring to the drawings, a vehicle-mounted floating display device 100e according to still another embodiment of the present application includes an image generating device 300 outputting a projection image, a half mirror 329 reflecting the projection image from the image generating device 300, and first and second mirrors 325a and 325b separated from each other and respectively reflecting the projection image from the half mirror 329, thereby respectively outputting first and second floating images based on inverted real images.

[0147] On the other hand, the half mirror 329 transmits the first and second floating images. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0148] That is, the first projection image output from the image generating device 300 passes through the half mirror 329 and the first mirror 325a, and is output as the first floating image toward the co-pilot seat direction.

[0149] On the other hand, the second projection image output from the image generating device 300 passes through the half mirror 329 and the second mirror 325b, and is output as the second floating image toward the driver seat direction. Thereby, a plurality of floating images can be respectively output toward the driver seat direction and the co-pilot seat direction.

[0150] On the other hand, the first and second mirrors 325a and 325b can include anamorphic mirrors or anamorphic Fresnel concave mirrors having different focal lengths of a first axis and a second axis. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0151] On the other hand, the first and second mirrors 325a and 325b can include Fresnel concave mirrors 325 having a distance of 0.3 mm to 0.5 mm or Fresnel concave mirrors 325 having curved reflecting surfaces. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0152] Figure 9 is a diagram illustrating a vehicle-mounted floating display device according to still another embodiment of the present application.

[0153] Referring to the drawings, a vehicle-mounted floating display device 100f according to a further embodiment of the present application includes an image generating device 300 outputting a projection image, first and second folding mirrors 331a and 331b separated from each other and each reflecting the projection image from the image generating device 300, and a mirror 325 reflecting the projection images from the first and second folding mirrors 331a and 331b, respectively, thereby outputting first and second floating images based on inverted real images, respectively. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0154] That is, the first projection image output from the image generating device 300 passes through the first folding mirror 331a and the mirror 325, and is output as the first floating image toward the driver's seat direction.

[0155] On the other hand, the second projection image output from the image generating device 300 passes through the second folding mirror 331b and the mirror 325, and is output as the second floating image toward the co-driver's seat direction. Thereby, a plurality of floating images can be output toward the driver's seat direction and the co-driver's seat direction, respectively.

[0156] On the other hand, the mirror 325 can include a deformed mirror or a deformed Fresnel concave mirror having a focal length of the first axis different from a focal length of the second axis. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0157] On the other hand, the mirror 325 can include a Fresnel concave mirror 325 having a pitch of 0.3 to 0.5 mm or a Fresnel concave mirror 325 having a curved reflecting surface. Thereby, a clear floating image of a large screen can be realized, and the size of the display device can be reduced.

[0158] For example, in a case where the second folding mirror 331b is mechanically folded, the vehicle-mounted floating display device 100f outputs the first floating image toward the driver's seat direction.

[0159] As another example, in a case where the first folding mirror 331a is mechanically folded, the vehicle-mounted floating display device 100f outputs the second floating image toward the co-driver's seat direction.

[0160] On the other hand, although the preferred embodiments of the present application have been illustrated and described, the present application is not limited to the specific embodiments described above, and various modifications can be made by those skilled in the art without departing from the spirit of the present application as claimed in the claims, and these modifications should not be individually interpreted from the technical idea or prospect of the present application.

Claims

1. A vehicle-mounted floating display device, wherein, include: Image generating device, outputting projected images; as well as A reflector reflects the projected image from the image generating device and outputs a levitation image based on an inverted real image; The reflector includes a deformable reflector or a deformable Fresnel concave reflector.

2. The vehicle-mounted floating display device according to claim 1, wherein, The focal length of the first axis of the deformable mirror or deformable Fresnel concave mirror is different from the focal length of the second axis.

3. The vehicle-mounted floating display device according to claim 1, wherein, The distance between the image generating device and the reflector is greater than the focal length of the reflector.

4. The vehicle-mounted floating display device according to claim 1, wherein, It also includes at least one of a phase delay plate, a semi-transparent mirror, and a reflective polarizer disposed between the image generating device and the mirror.

5. The vehicle-mounted floating display device according to claim 1, wherein, It also includes a second reflector that reflects the projected image from the image generating device. The reflector reflects the projected image from the second reflector and outputs the levitation image based on the inverted real image.

6. The vehicle-mounted floating display device according to claim 5, wherein, The sum of the distance between the image generating device and the second reflector and the distance between the second reflector and the reflector is greater than the focal length of the reflector.

7. The vehicle-mounted floating display device according to claim 5, wherein, The distance between the image generating device and the second reflector is greater than the distance between the second reflector and the reflector.

8. The vehicle-mounted floating display device according to claim 5, wherein, The suspended image reflected on the reflector is reflected by the vehicle's windshield and output to a designated area.

9. A vehicle-mounted floating display device, wherein, include: Image generating device, outputting projected images; as well as A reflector reflects the projected image from the image generating device and outputs a levitation image based on an inverted real image; The reflector includes a Fresnel concave reflector with a spacing between 0.3 mm and 0.5 mm or a Fresnel concave reflector with a curved reflective surface.

10. The vehicle-mounted floating display device according to claim 9, wherein, It also includes a second reflector that reflects the projected image from the image generating device. The reflector reflects the projected image from the second reflector and outputs the levitation image based on the inverted real image.

11. A vehicle-mounted floating display device, wherein, include: Image generating device, outputting projected images; A semi-transparent, semi-reflective mirror reflects the projected image from the image generating device; as well as The first and second reflectors are set separately to reflect the projected images from the semi-transparent and semi-reflective mirrors, thereby outputting a first levitation image and a second levitation image based on an inverted real image, respectively. The semi-transparent mirror transmits light through the first suspended image and the second suspended image.

12. The vehicle-mounted floating display device according to claim 11, wherein, The first and second reflectors include deformable reflectors or deformable Fresnel concave reflectors whose focal lengths on the first axis and the second axis are different.

13. The vehicle-mounted floating display device according to claim 11, wherein, The first and second reflectors include Fresnel concave reflectors with a spacing between 0.3 mm and 0.5 mm or Fresnel concave reflectors with curved reflective surfaces.

14. A vehicle-mounted floating display device, wherein, include: Image generating device, outputting projected images; The first folding reflector and the second folding reflector are separate from each other and respectively reflect the projected image from the image generating device; as well as The reflectors reflect the projected images from the first folding reflector and the second folding reflector, respectively, thereby outputting a first levitation image and a second levitation image based on an inverted real image.

15. The vehicle-mounted floating display device according to claim 14, wherein, The reflector includes a deformable reflector or a deformable Fresnel concave reflector, wherein the focal length of the first axis is different from the focal length of the second axis.

16. The vehicle-mounted floating display device according to claim 14, wherein, The reflector includes a Fresnel concave reflector with a spacing between 0.3 mm and 0.5 mm or a Fresnel concave reflector with a curved reflective surface.

Images