Floating display device for vehicle

Abstract

The present disclosure relates to a floating display device for a vehicle. The floating display device for a vehicle, according to an embodiment of the present disclosure, comprises: an image generation device which outputs a projection image; and a mirror which reflects the projection image from the image generation device and outputs an inverted real image-based floating image, wherein the mirror comprises an anamorphic mirror or an anamorphic Fresnel concave mirror. Accordingly, it is possible to reduce a feeling of fatigue due to binocular disparity while implementing a clear floating image on a large screen.

Description

Floating display device for vehicles

[0001] The present disclosure relates to a floating display device for a vehicle, and more particularly, to a floating display device for a vehicle that can reduce fatigue due to binocular parallax while implementing a clear floating image on a large screen.

[0002] A vehicle is a device that allows the user to move in the desired direction. A representative example is an automobile.

[0003] Meanwhile, for the convenience of vehicle users, a floating display device is installed inside the vehicle.

[0004] For example, displays are placed in clusters and other areas to display various types of information. Meanwhile, vehicles are increasingly equipped with various displays, including AVN (Audio Video Navigation) displays and head-up displays that project images onto the windshield, separate from the cluster, to display driving information and other information.

[0005] Meanwhile, prior art document, U.S. Patent No. US5087116, discloses outputting a floating image using a Fresnel mirror and a general mirror.

[0006] However, according to the Fresnel mirror according to the previous literature, there are disadvantages in that aberration occurs, the focal length is extended, it is not clear, and the binocular disparity increases depending on the viewing position, causing fatigue.

[0007] The problem of the present disclosure is to provide a floating display device for a vehicle that can reduce fatigue due to binocular parallax while implementing a clear floating image on a large screen.

[0008] Meanwhile, another problem of the present disclosure is to provide a floating display device for a vehicle that can reduce the size while implementing a clear floating image on a large screen.

[0009] According to one embodiment of the present disclosure for achieving the above-described solving problem, a floating display device for a vehicle includes 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, wherein the mirror includes an anamorphic mirror or an anamorphic Fresnel concave mirror.

[0010] Meanwhile, an anamorphic mirror or anamorphic Fresnel concave mirror has different focal lengths on the first and second axes.

[0011] Meanwhile, the distance between the image generating device and the mirror is greater than the focal length of the mirror.

[0012] Meanwhile, a floating display device for a vehicle according to one embodiment of the present disclosure may further include at least one of a phase delay plate, a half mirror, or a reflective polarizing mirror disposed between the image generating device and the mirror.

[0013] Meanwhile, a floating display device for a vehicle according to one embodiment of the present disclosure further includes a second mirror that reflects a projected image from an image generating device, and the mirror reflects the projected image from the second mirror and can output a floating image based on an inverted real image.

[0014] Meanwhile, the sum of the distance between the image generating device and the second mirror and the distance between the second mirror and the mirror is greater than the focal length of the mirror.

[0015] Meanwhile, the distance between the image generating device and the second mirror is greater than the distance between the second mirrors and the mirrors.

[0016] Meanwhile, the floating image reflected from the mirror can be reflected on the vehicle's windshield and output to a predetermined area.

[0017] Meanwhile, a floating display device for a vehicle according to another embodiment of the present disclosure includes 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, wherein the mirror includes a Fresnel concave mirror having a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror having a curved reflective surface.

[0018] Meanwhile, a floating display device for a vehicle according to another embodiment of the present disclosure further includes a second mirror that reflects a projected image from an image generating device, and the mirror reflects the projected image from the second mirror and can output a floating image based on an inverted real image.

[0019] Meanwhile, a floating display device for a vehicle according to another embodiment of the present disclosure includes an image generating device that outputs a projected image, a half mirror that reflects the projected image from the image generating device, and a first mirror and a second mirror that are spaced apart from each other and reflect the projected image from the half mirror to output a first floating image and a second floating image based on an inverted real image, respectively, wherein the half mirror transmits the first floating image and the second floating image.

[0020] Meanwhile, the first mirror and the second mirror may include an anamorphic mirror or an anamorphic Fresnel concave mirror having different focal lengths on the first axis and the second axis.

[0021] Meanwhile, the first mirror and the second mirror may include a Fresnel concave mirror having a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror having a curved reflective surface.

[0022] Meanwhile, a floating display device for a vehicle according to another embodiment of the present disclosure includes an image generating device that outputs a projection image, a first folding mirror and a second folding mirror that are spaced apart from each other and each reflect the projection image from the image generating device, and a mirror that reflects the projection image from the first folding mirror and the second folding mirror, respectively, and outputs a first floating image and a second floating image based on an inverted real image, respectively.

[0023] Meanwhile, the mirror may include an anamorphic mirror or an anamorphic Fresnel concave mirror having different focal lengths on the first and second axes.

[0024] Meanwhile, the mirror may include a Fresnel concave mirror or a Fresnel concave mirror having a curved reflective surface with a pitch of between 0.3 mm and 0.5 mm.

[0025] A floating display device for a vehicle according to one embodiment of the present disclosure includes an image generating device that outputs a projected image, and a mirror that reflects the projected image from the image generating device and outputs an inverted real-image-based floating image, wherein the mirror includes an anamorphic mirror or an anamorphic Fresnel concave mirror. This makes it possible to implement a clear floating image on a large screen while reducing fatigue due to binocular parallax.

[0026] Meanwhile, anamorphic mirrors, or anamorphic Fresnel concave mirrors, have different focal lengths on the first and second axes. This allows for the creation of clear floating images on a large screen while reducing binocular parallax-related fatigue.

[0027] Meanwhile, the distance between the image generator and the mirror is greater than the mirror's focal length. This allows for the creation of a clear floating image on a large screen while reducing binocular parallax-related fatigue.

[0028] Meanwhile, a floating display device for a vehicle according to one embodiment of the present disclosure may further include at least one of a phase delay plate, a half mirror, or a reflective polarizing mirror positioned between the image generating device and the mirror. This enables the implementation of a clear floating image on a large screen while reducing fatigue due to binocular parallax.

[0029] Meanwhile, a floating display device for a vehicle according to one embodiment of the present disclosure further includes a second mirror that reflects a projected image from an image generating device, wherein the mirror reflects the projected image from the second mirror and outputs a floating image based on an inverted real image. This enables the implementation of a clear floating image on a large screen while reducing fatigue due to binocular parallax.

[0030] Meanwhile, the sum of the distance between the image generating device and the second mirror, and the distance between the second mirror and the mirror itself, is greater than the mirror's focal length. This allows for the realization of a clear floating image on a large screen while reducing binocular parallax-induced fatigue.

[0031] Meanwhile, the distance between the image generating device and the second mirror is greater than the distance between the second mirrors. This allows for the implementation of a clear floating image on a large screen while reducing fatigue caused by binocular parallax.

[0032] Meanwhile, the floating image reflected from the mirror can be reflected onto the vehicle's windshield and output to a specified area. This allows for a large-screen, clear floating image while reducing its size.

[0033] Meanwhile, a floating display device for a vehicle according to another embodiment of the present disclosure includes an image generating device that outputs a projected image, and a mirror that reflects the projected image from the image generating device and outputs a floating image based on an inverted real image, wherein the mirror includes a Fresnel concave mirror having a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror having a curved reflective surface. As a result, a clear floating image on a large screen can be realized while reducing the size.

[0034] Meanwhile, a floating display device for a vehicle according to another embodiment of the present disclosure further includes a second mirror that reflects a projected image from an image generating device, wherein the mirror reflects the projected image from the second mirror and can output a floating image based on an inverted real image. This makes it possible to reduce the size while implementing a clear floating image on a large screen.

[0035] Meanwhile, a floating display device for a vehicle according to another embodiment of the present disclosure includes an image generating device that outputs a projected image, a half mirror that reflects the projected image from the image generating device, and a first mirror and a second mirror that are spaced apart from each other and reflect the projected image from the half mirror to output a first floating image and a second floating image based on an inverted real image, respectively, wherein the half mirror transmits the first floating image and the second floating image. As a result, a large-screen, clear floating image can be implemented while reducing its size.

[0036] Meanwhile, the first mirror and the second mirror may include anamorphic mirrors or anamorphic Fresnel concave mirrors with different focal lengths on the first and second axes. This allows for a reduction in size while realizing a clear floating image on a large screen.

[0037] Meanwhile, the first mirror and the second mirror may include a Fresnel concave mirror with a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror with a curved reflective surface. This allows for a reduction in size while realizing a clear floating image on a large screen.

[0038] Meanwhile, a floating display device for a vehicle according to another embodiment of the present disclosure includes an image generating device that outputs a projected image, a first folding mirror and a second folding mirror that are spaced apart from each other and each reflect the projected image from the image generating device, and a mirror that reflects the projected image from the first folding mirror and the second folding mirror, respectively, to output a first floating image and a second floating image based on an inverted real image, respectively. As a result, a clear floating image on a large screen can be implemented while reducing the size.

[0039] Meanwhile, the mirror may include an anamorphic mirror or an anamorphic Fresnel concave mirror with different focal lengths on the first and second axes. This allows for a reduction in size while realizing a clear floating image on a large screen.

[0040] Meanwhile, the mirror may include a Fresnel concave mirror with a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror with a curved reflective surface. This allows for a reduction in size while realizing a clear floating image on a large screen.

[0041] Figure 1 is a drawing showing an example of the exterior and interior of a vehicle.

[0042] FIGS. 2A and 2B are drawings illustrating a floating image displayed on the upper part of the second display of FIG. 1.

[0043] FIG. 2c is a drawing illustrating a floating image displayed on the upper part of the first display of FIG. 1.

[0044] FIGS. 3A and 3B are drawings for reference in the description of a floating display device for a vehicle related to the present disclosure.

[0045] FIG. 4 is a drawing illustrating an example of the internal configuration of a floating display device for a vehicle according to an embodiment of the present disclosure.

[0046] FIG. 5 is a drawing illustrating an example of the internal configuration of a floating display device for a vehicle according to another embodiment of the present disclosure.

[0047] Figures 6a to 6d are drawings referred to in the description of Figures 4 to 5.

[0048] FIGS. 7A to 9 are drawings illustrating a floating display device for a vehicle according to various embodiments of the present disclosure.

[0049] Hereinafter, the present disclosure will be described in more detail with reference to the drawings.

[0050] The suffixes "module" and "part" used in the following description are given solely for the convenience of writing this specification and do not impart any particularly significant meaning or role to the components themselves. Therefore, the terms "module" and "part" may be used interchangeably.

[0051] Figure 1 is a drawing showing an example of the exterior and interior of a vehicle.

[0052] Referring to the drawing, the vehicle (200) is operated by a plurality of wheels (103FR, 103FL, 103RL, etc.) that rotate by a power source and a steering wheel (150) for controlling the direction of travel of the vehicle (200).

[0053] Meanwhile, the vehicle (200) may further be equipped with a camera (195) for capturing images of the front of the vehicle.

[0054] Meanwhile, the vehicle (200) may be equipped with multiple displays (180a, 180b, 180h) for displaying images, information, etc. inside.

[0055] For example, among the plurality of displays (180a, 180b, 180h), the first display (180a) may be a cluster display, the second display (180b) may be an AVN (Audio Video Navigation) display, and the third display (180h) may be a HUD display, which is a head-up display (HUD) in which an image is projected onto a predetermined area (Ara) spaced apart from the windshield (WS).

[0056] Meanwhile, the vehicle floating display device (100 in FIG. 3) according to the embodiment of the present disclosure may display a floating image on the upper portion (Arb) of the second display (180b), display a floating image on the upper portion (Ara) of the first display (180a), or display a floating image on the upper portion (Ara) of the first display (180a) and the upper portion (Arb) of the second display (180b), respectively.

[0057] Meanwhile, the vehicle (200) described in this specification may be a concept that includes all of a vehicle equipped with an engine as a power source, a hybrid vehicle equipped with an engine and an electric motor as a power source, and an electric vehicle equipped with an electric motor as a power source.

[0058] FIGS. 2A and 2B are drawings illustrating a floating image displayed on the upper part of the second display of FIG. 1.

[0059] First, FIG. 2a illustrates a floating image (210) being displayed on the upper part (Arb) of the AVN display, which is the second display (180b).

[0060] Referring to the drawing, when a navigation image (210) is displayed on the AVN display, which is the second display (180b), the vehicle floating display device (100) placed on the rear of the second display (180b) can display a floating image (220) for providing information, etc.

[0061] In particular, since the floating image (220) is displayed on the upper part of the second display (180b), various types of information linked to the navigation image (210) can be provided, thereby improving visibility.

[0062] FIG. 2b illustrates an example of the internal structure of a vehicle floating display device (100) for providing a floating image (210) of FIG. 2a.

[0063] Referring to the drawing, a floating display device (100) for a vehicle includes an image generating device (300) that outputs a projection image, and a mirror (325) that reflects the projection image from the image generating device (300) and outputs a floating image based on an inverted real image.

[0064] At this time, the mirror (325) includes an anamorphic mirror or an anamorphic Fresnel concave mirror. This makes it possible to implement a clear floating image on a large screen while reducing fatigue due to binocular parallax.

[0065] As shown in the drawing, an image generating device (300) is placed at the bottom of the second display (180b), and a mirror (325) can be placed at a distance from the rear of the second display (180b).

[0066] By this, the structure of the vehicle floating display device (100) can provide a floating image (220) on the upper part of the second display (180b) without protruding outward.

[0067] 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 reflective surface. This makes it possible to reduce the size while implementing a clear floating image on a large screen.

[0068] FIG. 2c is a drawing illustrating a floating image displayed on the upper part of the first display of FIG. 1.

[0069] In particular, FIG. 2c illustrates a floating image (210) being displayed on the upper part (Arb) of the AVN display, which is the first display (180a).

[0070] Referring to the drawing, when a cluster image (230) is displayed on a cluster display, which is a first display (180a), a vehicle floating display device (100) positioned at the rear of the first display (180a) can display a floating image (240) for providing information, etc.

[0071] In particular, since the floating image (240) is displayed on the upper part of the first display (180a), various types of information linked to the cluster image (230) can be provided, thereby improving visibility.

[0072] Meanwhile, the floating image (240) is movable, thus enabling interaction between the driver and the floating image.

[0073] Meanwhile, the vehicle floating display device (100) of FIG. 2c includes, similarly to FIG. 2b, an image generating device (300) that outputs a projection image, and a mirror (325) that reflects the projection image from the image generating device (300) and outputs a floating image based on an inverted real image.

[0074] At this time, the mirror (325) includes an anamorphic mirror or an anamorphic Fresnel concave mirror. This makes it possible to implement a clear floating image on a large screen while reducing fatigue due to binocular parallax.

[0075] 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 reflective surface. This makes it possible to reduce the size while implementing a clear floating image on a large screen.

[0076] FIGS. 3A and 3B are drawings for reference in the description of a floating display device for a vehicle related to the present disclosure.

[0077] FIG. 3a is a drawing illustrating the structure of a floating display device for a vehicle related to the present disclosure.

[0078] Referring to the drawings, a floating display device (100x) for a vehicle related to the present disclosure includes an image generating device (300x) that outputs a projection image, and a mirror (325x) that reflects the projection image from the image generating device (300).

[0079] The floating image reflected from the mirror (325x) can be recognized as floating in space by being focused on an image focusing position such as P1, P2 or P3.

[0080] Meanwhile, when a concave mirror or Fresnel concave mirror is used as a mirror (325x), aberration occurs, forming a shape in which the focal length is extended, resulting in poor clarity, and binocular parallax increases depending on the viewing position, which has the disadvantage of causing significant fatigue.

[0081] Fig. 3b is a drawing showing the focus shape at the image focusing positions of P1, P2, and P3 of Fig. 3a.

[0082] (a) of Fig. 3b is a focus shape (310) at the image focusing position of P1, (b) of Fig. 3b is a focus shape (320) at the image focusing position of P2, and (c) of Fig. 3b is a focus shape (330) at the image focusing position of P3.

[0083] When looking at the focus shapes (310, 320, 330) at the image focusing positions of each of P1, P2, and P3, due to the occurrence of aberration, the focal lengths are shown to be extended, and accordingly, the floating image is not clear, and the binocular disparity increases depending on the viewing position, which has the disadvantage of causing great fatigue.

[0084] In this disclosure, a method for reducing fatigue due to binocular parallax while implementing a clear floating image on a large screen is proposed. This is described with reference to FIG. 4 and below.

[0085] FIG. 4 is a drawing illustrating an example of the internal configuration of a floating display device for a vehicle according to an embodiment of the present disclosure.

[0086] Referring to the drawings, a floating display device (100) for a vehicle according to one embodiment of the present disclosure includes an image generating device (300) that outputs a projection image, and a mirror (325) that reflects the projection image from the image generating device (300) and outputs a floating image based on an inverted real image.

[0087] Meanwhile, the mirror (325) includes an anamorphic mirror or an anamorphic Fresnel concave mirror. This enables the implementation of a clear floating image on a large screen while reducing fatigue due to binocular parallax.

[0088] 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 reflective surface. This makes it possible to reduce the size while implementing a clear floating image on a large screen.

[0089] Meanwhile, the distance (d) between the image generating device (300) and the mirror (325) is greater than the focal length of the mirror (325).

[0090] That is, if the focal length of the mirror (325) is f, then in order to output a floating image based on an inverted real image, f <d 인 것이 바람직하다.

[0091] FIG. 5 is a drawing illustrating an example of the internal configuration of a floating display device for a vehicle according to another embodiment of the present disclosure.

[0092] Referring to the drawings, a vehicle floating display device (100b) according to another embodiment of the present disclosure may include an image generating device (300) that outputs a projection image, a second mirror (315) that reflects the projection image from the image generating device (300), and a mirror (325) that reflects the projection image from the second mirror (315) and outputs a floating image based on an inverted real image.

[0093] That is, unlike Fig. 4, a second mirror (315) can be additionally provided.

[0094] Meanwhile, the image generating device (300) may be positioned lower than the second mirror (315), and the second mirror (315) may be positioned lower than the mirror (325).

[0095] Meanwhile, the distance (d2) between the image generating device (300) and the second mirror (315) is greater than the distance (d1) between the second mirror (315) and the mirror (325).

[0096] Meanwhile, the sum (d1+d2) of the distance (d2) between the image generating device (300) and the second mirror (315) and the distance (d1) between the second mirror (315) and the mirror (325) is greater than the focal length of the mirror (325). As a result, it is possible to implement a clear floating image on a large screen while reducing fatigue due to binocular parallax.

[0097] That is, if the focal length of the mirror (325) is f, it is desirable that f<(d1+d2) in order to output a floating image based on an inverted real image.

[0098] Meanwhile, in this way, when the second mirror (315) is additionally provided, the size of the vehicle floating display device (100) can be reduced compared to FIG. 4, etc.

[0099] Meanwhile, if the center of curvature of the mirror (325) is c, an inverted enlarged real image is created when f < (d1+d2) < c, and an inverted reduced real image is created when (d1+d2) > c.

[0100] Meanwhile, when using a reduced-size image, the size of the floating image contrast image generating device (300), vehicle floating display device (100), etc. must increase.

[0101] Accordingly, in the present disclosure, a floating image based on an inverted enlarged image is implemented. That is, if the center of curvature of the mirror (325) is c, it is implemented in the case where f < (d1+d2) < c.

[0102] Meanwhile, this principle can be applied to Fig. 4. That is, if the center of curvature of the mirror (325) is c, it can be implemented as a case where f < d < c.

[0103] Meanwhile, when using a magnified image, a floating image larger than the projection image of the image generating device (300) can be secured, but the resolution, etc. may be lowered.

[0104] In this disclosure, an anamorphic mirror or an anamorphic Fresnel concave mirror is used as the mirror (325). This enables the implementation of a clear floating image on a large screen while reducing fatigue due to binocular parallax.

[0105] Alternatively, a Fresnel concave mirror (325) with a pitch of 0.3 mm to 0.5 mm or a Fresnel concave mirror (325) having a curved reflective surface may be used as the mirror (325). This allows for a reduction in size while realizing a clear floating image on a large screen.

[0106] Figures 6a to 6d are drawings referred to in the description of Figures 4 to 5.

[0107] Figure 6a illustrates a case where the mirror is an anamorphic mirror or an anamorphic Fresnel concave mirror.

[0108] Referring to the drawing, the mirror (325b) includes an anamorphic mirror or an anamorphic Fresnel concave mirror.

[0109] When an anamorphic concave mirror or an anamorphic Fresnel concave mirror is used as the mirror (325b), a design for reducing the vertical light spread and the left and right light spread is possible, enabling the creation of a floating image with clear picture quality and less fatigue due to binocular parallax.

[0110] Meanwhile, an anamorphic mirror or an anamorphic Fresnel concave mirror may have different focal lengths on the first axis (e.g., x-axis) and the second axis (e.g., y-axis).

[0111] In the drawing, it is illustrated that in an anamorphic mirror or an anamorphic Fresnel concave mirror, the focal length on the second side (e.g., the y-axis) is greater than the focal length on the first axis (e.g., the x-axis).

[0112] Figure 6b illustrates a case where the mirror is a Fresnel concave mirror.

[0113] Referring to the drawing, the mirror (325) may include a Fresnel concave mirror.

[0114] The mirror (325) of Fig. 6b has a left-right symmetrical pattern, a pitch (PH) of each pattern, a draft angle of each pattern, a reflective surface (SFa) on which reflection is performed, and a non-reflective slope (SFb).

[0115] For example, when the pitch (PH) is less than 0.3 mm, haze occurs due to an increase in the slope (SFb) and scattering of light, making the image appear blurry.

[0116] Meanwhile, when the pitch (PH) is 0.5 mm or more, stripes of the Fresnel concave mirror can be recognized.

[0117] Meanwhile, the mirror (325) is preferably a Fresnel concave mirror with a pitch (PH) of 0.3 mm to 0.5 mm. Accordingly, it is possible to reduce the size while implementing a clear floating image on a large screen.

[0118] Figure 6c illustrates that the Fresnel concave mirror has a planar reflective surface, and Figure 6d illustrates that the Fresnel concave mirror has a curved reflective surface.

[0119] In the mirror (325) of Fig. 6b, if the reflection surface (SFa) on which reflection is performed is a flat reflection surface, as in Fig. 6c, the focal length of each reflection surface is different, resulting in a deterioration in image quality.

[0120] Meanwhile, in the mirror (325) of Fig. 6b, if the reflection surface (SFa) on which reflection is performed is a curved reflection surface, as in Fig. 6d, the focal length can be made the same for each individual inclined surface, thereby enabling the output of a clear and less tiring floating image.

[0121] That is, it is preferable that the mirror (325) be a Fresnel concave mirror having a curved reflective surface. Accordingly, it is possible to reduce the size while implementing a clear floating image on a large screen.

[0122] FIGS. 7A to 9 are drawings illustrating a floating display device for a vehicle according to various embodiments of the present disclosure.

[0123] First, FIG. 7a is a drawing illustrating a floating display device for a vehicle according to another embodiment of the present disclosure.

[0124] Referring to the drawings, a vehicle floating display device (100c) according to another embodiment of the present disclosure includes an image generating device (300) that outputs a projection image, and a mirror (325) that reflects the projection image from the image generating device (300) and outputs a floating image based on an inverted real image.

[0125] The mirror (325) includes an anamorphic mirror or an anamorphic Fresnel concave mirror.

[0126] 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 reflective surface. This makes it possible to reduce the size while implementing a clear floating image on a large screen.

[0127] Meanwhile, a vehicle floating display device (100c) according to another embodiment of the present disclosure may further include at least one of a phase delay plate (333) or a half mirror or a reflective polarizing mirror (332) disposed between the image generating device (300) and the mirror (325).

[0128] In the drawing, the projection image from the image generating device (300) is reflected from a phase delay plate (333) disposed between the image generating device (300) and a mirror (325), and is reflected from a half mirror or reflective polarizing mirror (332) disposed between the phase delay plate (333) and the image generating device (300), and is incident on the mirror (325), and the projection image incident on the mirror (325) is reflected, thereby outputting a floating image based on an inverted real image.

[0129] Meanwhile, the phase delay plate (333) may be equipped with a quarter wave conversion plate (QWP).

[0130] Meanwhile, the reflective polarizing mirror (332) can transmit P polarized light and reflect S polarized light, or reflect P polarized light and transmit S polarized light.

[0131] Meanwhile, the distance between the phase delay plate (333) and the half mirror or reflective polarizing mirror (332) may be smaller than the distance between the image generating device (300) and the phase delay plate (333), and may be smaller than the distance between the half mirror or reflective polarizing mirror (332) and the mirror (325). As a result, the size of the vehicle floating display device (100c) can be reduced.

[0132] By using such a phase delay plate (333) or a half mirror or reflective polarizing mirror (332), it is possible to reduce the size of the vehicle floating display device (100c), implement a clear floating image on a large screen, and reduce fatigue due to binocular parallax.

[0133] FIG. 7b is a diagram illustrating a floating display device for a vehicle according to another embodiment of the present disclosure.

[0134] Referring to the drawings, a vehicle floating display device (100d) according to another embodiment of the present disclosure includes an image generating device (300) that outputs a projection image, a second mirror (323) that reflects the projection image from the image generating device (300), and a mirror (325) that reflects the projection image from the second mirror (323) and outputs a floating image based on an inverted real image.

[0135] The mirror (325) includes an anamorphic mirror or an anamorphic Fresnel concave mirror.

[0136] 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 reflective surface. This makes it possible to reduce the size while implementing a clear floating image on a large screen.

[0137] Meanwhile, a floating image reflected from a mirror (325) within a vehicle floating display device (100d) can be reflected on the windshield (WS) of the vehicle and output to a predetermined area.

[0138] Here, the predetermined area can correspond to the driver's line of sight area, the eye box.

[0139] Meanwhile, the distance between the image generating device (300) and the second mirror (323) may be smaller than the distance between the second mirror (323) and the mirror (325), and may be smaller than the distance between the mirror (325) and the windshield (WS). Accordingly, the size of the vehicle floating display device (100d) can be reduced.

[0140] Ultimately, the floating image reflected from the mirror (325) is reflected and output on the windshield (WS) of the vehicle, thereby reducing the size of the vehicle floating display device (100d), while implementing a large-screen, clear floating image, and reducing fatigue due to binocular parallax.

[0141] FIG. 8 is a drawing illustrating a floating display device for a vehicle according to another embodiment of the present disclosure.

[0142] Referring to the drawings, a floating display device (100e) for a vehicle according to another embodiment of the present disclosure includes an image generating device (300) that outputs a projection image, a half mirror (329) that reflects the projection image from the image generating device (300), and a first mirror (325a) and a second mirror (325b) that are spaced apart from each other and reflect the projection image from the half mirror (329) to output a first floating image and a second floating image based on an inverted real image, respectively.

[0143] Meanwhile, the half mirror (329) transmits the first and second floating images. This enables a large-screen, clear floating image to be realized while reducing its size.

[0144] That is, the first projection image output from the image generating device (300) is output as a first floating image in the direction of the auxiliary seat through the half mirror (329) and the first mirror (325a).

[0145] Meanwhile, the second projection image output from the image generation device (300) is output as a second floating image toward the driver's seat through the half mirror (329) and the second mirror (325b). Accordingly, multiple floating images can be output toward the driver's seat and the passenger seat, respectively.

[0146] Meanwhile, the first mirror (325a) and the second mirror (325b) may include anamorphic mirrors or anamorphic Fresnel concave mirrors with different focal lengths on the first and second axes. This allows for a reduction in size while realizing a clear floating image on a large screen.

[0147] Meanwhile, the first mirror (325a) and the second mirror (325b) may include 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 reflective surface. This makes it possible to reduce the size while implementing a clear floating image on a large screen.

[0148] FIG. 9 is a drawing illustrating a floating display device for a vehicle according to another embodiment of the present disclosure.

[0149] Referring to the drawings, a vehicle floating display device (100f) according to another embodiment of the present disclosure includes an image generating device (300) that outputs a projected image, a first folding mirror (331a) and a second folding mirror (331b) that are spaced apart from each other and each reflects the projected image from the image generating device (300), and a mirror (325) that reflects the projected images from the first folding mirror (331a) and the second folding mirror (331b) to output a first floating image and a second floating image based on an inverted real image, respectively. As a result, a clear floating image on a large screen can be implemented while reducing the size.

[0150] That is, the first projection image output from the image generating device (300) is output as a first floating image in the direction of the driver's seat through the first folding mirror (331a) and mirror (325).

[0151] Meanwhile, the second projection image output from the image generation device (300) is output as a second floating image in the direction of the passenger seat through the second folding mirror (331b) and mirror (325). Accordingly, a plurality of floating images can be output in the direction of the driver's seat and the direction of the passenger seat, respectively.

[0152] Meanwhile, the mirror (325) may include an anamorphic mirror or an anamorphic Fresnel concave mirror with different focal lengths on the first and second axes. This allows for a reduction in size while realizing a clear floating image on a large screen.

[0153] Meanwhile, the mirror (325) may include 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 reflective surface. This makes it possible to reduce the size while implementing a clear floating image on a large screen.

[0154] For example, when the second folding mirror (331b) is mechanically folded, the vehicle floating display device (100f) outputs the first floating image toward the driver's seat.

[0155] As another example, when the first folding mirror (331a) is mechanically folded, the vehicle floating display device (100f) outputs the second floating image toward the passenger seat.

[0156] Meanwhile, although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present disclosure.

Claims

1. An image generating device that outputs a projected image; A mirror that reflects the projection image from the image generating device and outputs a floating image based on an inverted reality; The above mirror, A floating display device for a vehicle comprising an anamorphic mirror or an anamorphic Fresnel concave mirror.

2. In paragraph 1, The above anamorphic mirror or anamorphic Fresnel concave mirror is a floating display device for a vehicle, wherein the focal lengths of the first and second axes are different.

3. In paragraph 1, A vehicle floating display device wherein the distance between the image generating device and the mirror is greater than the focal length of the mirror.

4. In paragraph 1, A floating display device for a vehicle, further comprising at least one of a phase delay plate, a half mirror, or a reflective polarizing mirror disposed between the image generating device and the mirror.

5. In paragraph 1, Further comprising a second mirror that reflects the projection image from the image generating device; The above mirror, A floating display device for a vehicle that reflects a projection image from the second mirror and outputs the floating image based on the inverted real image.

6. In paragraph 5, A vehicle floating display device, wherein the sum of the distance between the image generating device and the second mirror and the distance between the second mirror and the mirror is greater than the focal length of the mirror.

7. In paragraph 5, A vehicle floating display device wherein the distance between the image generating device and the second mirror is greater than the distance between the second mirror and the mirror.

8. In paragraph 5, A floating display device for a vehicle in which a floating image reflected from the above mirror is reflected on the windshield of the vehicle and output to a predetermined area.

9. Image generating device that outputs a projection image; A mirror that reflects a projection image from the image generating device and outputs a floating image based on an inverted reality; The above mirror, A floating display device for a vehicle comprising a Fresnel concave mirror or a Fresnel concave mirror having a curved reflective surface with a pitch of 0.3 mm to 0.5 mm.

10. In paragraph 9, Further comprising a second mirror that reflects the projection image from the image generating device; The above mirror, A floating display device for a vehicle that reflects a projection image from the second mirror and outputs the floating image based on the inverted real image.

11. Image generating device that outputs a projection image; A half mirror that reflects the projection image from the image generating device; A first mirror and a second mirror are spaced apart from each other and each reflects a projection image from the half mirror to output a first floating image and a second floating image based on an inverted reality, respectively; The above half mirror is a floating display device for a vehicle that transmits the first floating image and the second floating image.

12. In paragraph 11, The above first mirror and second mirror, A floating display device for a vehicle, comprising an anamorphic mirror or an anamorphic Fresnel concave mirror having different focal lengths on the first and second axes.

13. In paragraph 11, The above first mirror and second mirror, A floating display device for a vehicle comprising a Fresnel concave mirror or a Fresnel concave mirror having a curved reflective surface with a pitch of 0.3 mm to 0.5 mm.

14. Image generating device that outputs a projection image; A first folding mirror and a second folding mirror spaced apart from each other, each of which reflects the projection image from the image generating device; A vehicle floating display device comprising a mirror that reflects projection images from the first folding mirror and the second folding mirror, respectively, and outputs a first floating image and a second floating image based on an inverted real image.

15. In paragraph 14, The above mirror, A floating display device for a vehicle, comprising an anamorphic mirror or an anamorphic Fresnel concave mirror having different focal lengths on the first and second axes.

16. In paragraph 14, The above mirror, A floating display device for a vehicle comprising a Fresnel concave mirror or a Fresnel concave mirror having a curved reflective surface with a pitch of 0.3 mm to 0.5 mm.

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