Apparatus for displaying a floating image and vehicle display module comprising the same
By combining the light source, focusing lens, and reflector with a dual-reflector array, the problems of limited height and ghosting of suspended images are solved, achieving high-quality display of suspended images while reducing the thickness of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HYUNDAI MOTOR CO LTD
- Filing Date
- 2020-10-13
- Publication Date
- 2026-07-24
AI Technical Summary
Existing transmissive dihedral reflector array technology suffers from limitations in the height of the floating image and reduced brightness when displaying floating images. It also requires increasing the system size to adjust the height of the floating image and is prone to ghosting.
The structure includes a light source, a condenser lens, a reflector, and a double reflector array. By combining the condenser lens and the reflector, the light emitted by the light source is incident on the double reflector array. The tilt angle design of the Fresnel lens and the reflector reduces the thickness of the device and eliminates ghosting.
This achieves an increased height for the suspended image while reducing the device's thickness and eliminating ghosting, providing a higher quality display effect.
Smart Images

Figure CN113703162B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an apparatus for displaying levitation images and a vehicle display module including the apparatus, and more particularly to such an apparatus for displaying levitation images and a vehicle display module including the apparatus, the apparatus being able to improve display quality while reducing the thickness of the apparatus. Background Technology
[0002] The statements in this section are merely background information in relation to the invention and may not constitute prior art.
[0003] In recent years, multimedia content has been integrated with advanced technologies, enabling its expression in various ways and through innovative display systems. During the Fourth Industrial Revolution, with the emergence of Mixed Reality (MR), the successor to Virtual Reality (VR) and Augmented Reality (AR), sensory content is receiving increasing attention.
[0004] Therefore, as a technology to make the image displayed on the display panel levitate in the air, a transmissive type using a double reflector array and a reflective type using a rear reflector are adopted.
[0005] Reflective technology suffers from limitations in the height of the suspended image and a decrease in brightness due to the use of beam splitters. Therefore, transmissive technology using a dual-reflector array has attracted more attention.
[0006] However, in transmissive techniques using dihedral reflector arrays, the following problems need to be overcome: the system volume must be increased to adjust the height of the suspended image and to eliminate unwanted ghosting.
[0007] The details described as background art are intended only to facilitate understanding of the background of the invention and should not be construed as an admission of prior art previously known to those skilled in the art. Summary of the Invention
[0008] Therefore, the present invention provides an apparatus for displaying levitation images, the apparatus further comprising a lens and a reflector to increase the height of the levitation image while reducing the thickness of the apparatus and eliminating ghosting.
[0009] According to the present invention, the above and other objectives can be achieved by an apparatus for displaying a suspended image, the apparatus comprising: a light source, a condenser lens, a reflector, and a dihedral reflector array, wherein the light source extends in a planar direction and emits light for realizing an image; the condenser lens extends in a direction parallel to the light source and refracts the light emitted from the light source; the reflector is arranged to face the condenser lens and reflects the light refracted at the condenser lens and incident on the reflector; the dihedral reflector array extends in a planar direction and includes mirrors extending in intersecting directions, a first surface of the dihedral reflector array being arranged to face the reflector such that light reflected by the reflector is incident on the first surface, reflected by the mirrors, and exits from a second surface of the dihedral reflector array, thereby realizing an image at a position spaced apart from the second surface.
[0010] The light source may be a display panel configured to generate light for realizing an image, which is suspended at a position spaced apart from the array of two reflectors.
[0011] A condenser lens can be an off-axis lens, which extends in a plane parallel to the light source and whose focal axis is located outside the outermost end of the condenser lens.
[0012] A condenser lens can be part of a Fresnel lens, in which multiple prisms are arranged coaxially to refract incident light.
[0013] The condenser lens can be arranged to be spaced apart from and facing the reflector, and can be tilted so that the condenser lens gradually approaches the reflector from the first end to the second end.
[0014] The first end of a condenser lens can be the outermost end that is closest to the focal axis of the condenser lens, and the second end of a condenser lens can be the outermost end that is furthest from the focal axis of the condenser lens.
[0015] The condenser lens can be tilted at an angle that satisfies the following requirements: the second end of the condenser lens should be spaced apart from the reflector, and the focal axis of the light refracted at the second end of the condenser lens and then reflected by the reflector should be located outside the first end of the condenser lens.
[0016] The reflector can be arranged to face both a condenser lens and a dihedral reflector array that are spaced apart from each other in a planar direction.
[0017] The reflector can be arranged to be tilted at a predetermined angle relative to the array of two reflectors, the predetermined angle being determined with consideration of the ghosting display area, in which ghosting is produced due to the reflection of incident light at the array of two reflectors.
[0018] The reflector can be tilted so that the normal to the plane surface is parallel to the boundary of the ghosting display area.
[0019] A dual reflector array may include an upper plate and a lower plate, each of which includes a reflector arranged in a planar direction, the reflectors of the upper plate and the lower plate extending in directions that intersect each other.
[0020] A dual reflector array can be configured such that the reflectors extend in directions perpendicular to each other, and the light reflected by the reflector is incident obliquely on the individual reflectors extending in directions intersecting each other.
[0021] According to another aspect of the present invention, a vehicle display module is provided, the vehicle display module comprising: means for displaying a floating image and an internal structure extending in a direction extending from a dihedral reflector array, wherein the internal structure is a vehicle dashboard or console panel, and the floating image is formed above the internal structure or between the means and an occupant.
[0022] Further applications will become apparent from the description provided herein. It should be understood that this specification and specific examples are for illustrative purposes only and are not intended to limit the scope of the invention. Attached Figure Description
[0023] To better understand the present invention, various embodiments of the invention will be described by way of example with reference to the accompanying drawings, in which:
[0024] Figure 1 This is a schematic diagram illustrating the structure of a device for displaying levitation images according to some embodiments of the present invention;
[0025] Figure 2 This is a schematic diagram illustrating the relationship between the light source and the focusing lens in some embodiments of the present invention;
[0026] Figure 3 This is a schematic diagram illustrating a focusing lens according to some embodiments of the present invention;
[0027] Figure 4 This is a schematic diagram illustrating the relationship between a light source, a condenser lens, and a reflector according to an embodiment of the present invention, wherein the light source and the condenser lens are tilted relative to the reflector;
[0028] Figure 5 This is a schematic diagram illustrating the arrangement of the reflector and the array of two reflectors in some embodiments of the present invention;
[0029] Figure 6 This is a schematic diagram illustrating the structure of a dihedral reflector array according to some embodiments of the present invention;
[0030] Figure 7 and Figure 8This is a schematic diagram illustrating vehicle display modules according to some embodiments of the present invention, each vehicle display module including means for displaying floating images.
[0031] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Detailed Implementation
[0032] The following description is merely exemplary in nature and is not intended to limit the invention, application, or use. It should be understood that in all the drawings, corresponding reference numerals denote the same or corresponding parts and features.
[0033] The specific structural and functional descriptions of the embodiments of the present invention disclosed herein are for illustrative purposes only. The present invention can be embodied in many different forms without departing from its spirit and essential features. Therefore, the embodiments of the present invention are disclosed for illustrative purposes only and should not be construed as limiting the invention.
[0034] Reference will now be made in detail to various embodiments of the invention, specific examples of which are shown in the accompanying drawings and described below, as various modifications can be made to the embodiments of the invention in many different forms. While the invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the invention to those exemplary embodiments. Rather, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that can be included within the spirit and scope of the invention as defined by the appended claims.
[0035] It will be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be construed as being limited by these terms. These terms are used only to distinguish one element from another. For example, the first element discussed below may be referred to as the second element without departing from the teachings of the invention. Similarly, the second element may also be referred to as the first element.
[0036] What will be understood is that when an element is referred to as "connected" or "attached" to another element, it is able to be directly connected to or attached to the other element, or there may be an intermediate element between them. Conversely, it should be understood that when an element is referred to as "directly connected" or "directly attached" to another element, there is no intermediate element. Other expressions explaining the relationship between elements, such as "between," "directly between," "adjacent," or "directly adjacent," should be understood in the same way.
[0037] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be restrictive. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising,” “including,” “having,” or “comprising” are used in this specification, they indicate the presence of the stated feature, value, step, operation, element, component, and / or combination thereof, but do not exclude the presence or addition of one or more other features, values, steps, operations, elements, components, and / or combinations thereof.
[0038] Unless otherwise defined, the terms used herein, including technical and scientific terms, have the same meaning as understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms (e.g., as defined in common dictionaries) should be interpreted as having the same meaning as they have in the context of the relevant art and the invention, and should not be interpreted in an idealized or overly formal sense unless explicitly defined herein.
[0039] Exemplary embodiments of the invention will now be described in detail with reference to the accompanying drawings. Throughout these drawings, the same reference numerals will refer to the same or similar parts.
[0040] Figure 1 This is a schematic diagram illustrating the structure of a device for displaying levitation images according to an embodiment of the present invention.
[0041] refer to Figure 1 An apparatus for displaying a suspended image according to an embodiment of the present invention includes: a light source 10, a condenser lens 20, a reflector 30, and a dihedral reflector array 40. The light source 10 extends in a planar direction and emits light for realizing an image. The condenser lens 20 extends in a direction parallel to the light source 10 and refracts the light emitted from the light source 10. The reflector 30 is arranged to face the condenser lens 20 and reflects the light refracted at the condenser lens 20 and incident on the reflector 30. The dihedral reflector array 40 extends in a planar direction and includes mirrors extending in intersecting directions. One surface of the dihedral reflector array 40 is arranged to face the reflector 30 such that light reflected by the reflector 30 is incident on this one surface, reflected by the mirrors, and exits from the other surface of the dihedral reflector array 40, thereby realizing an image at a position spaced apart from the outer surface.
[0042] The light source 10 is a device that receives electricity and generates light for realizing an image. In one embodiment, the light source 10 may be a display panel. The light source 10 may extend in a planar direction, thereby causing the suspended image to extend in a planar direction.
[0043] The condenser lens 20 can extend parallel to the light source 10 and can be spaced a predetermined distance from the light source 10. The condenser lens 20 can refract the light generated by the light source 10 in a direction that converges the light to a point.
[0044] As will be described later, the condenser lens 20 may be a convex lens or a Fresnel lens configured to converge light at a focal point.
[0045] The reflector 30 may be a mirror configured to reflect light, wherein the reflective surface of the reflector 30 is arranged to face the condenser lens 20, and light incident on the reflective surface is reflected toward the dihedral reflector array 40.
[0046] Both the dual reflector array 40 and the condenser lens 20 can be arranged to face the reflector 30.
[0047] The dichroic reflector array 40 can be made of a light-transmitting material (such as glass) and can include mirrors extending in intersecting directions. Light incident on one surface of the dichroic reflector array 40 can exit through the other surface of the dichroic reflector array 40.
[0048] The dihedral reflector array 40 can be separated by reflectors extending in directions that intersect each other, and can be configured to have a dihedral corner reflector array (DCRA) structure.
[0049] Light incident on the dihedral reflector array 40 can be reflected by mirrors extending in intersecting directions, with the reflection angle determined by the angle of incidence. Light incident on the dihedral reflector array 40 from a point at various angles of incidence can be converged by the dihedral reflector array 40 to a point at a symmetrical position, thereby forming an image.
[0050] Specifically, when light is reflected an even number of times by mirrors extending in intersecting directions, the light incident on the dihedral reflector array 40 can form the desired image. However, when light is reflected an odd number of times by mirrors, unwanted ghosting may be formed.
[0051] Unlike conventional techniques, the device for displaying levitation images according to an embodiment of the present invention provides the effect of reducing the size of the device symmetrical to the levitation height of the levitation image by directing light emitted from the light source 10 onto the dihedral reflector array 40 via a condenser lens 20 and a reflector 30.
[0052] The light source 10 may be a display panel that generates light for realizing an image, which is suspended at a position spaced apart from the dihedral reflector array 40.
[0053] Here, the display panel can be implemented by various panels configured to realize images, such as cathode ray tubes (CRTs), video display terminals (VDTs), and liquid crystal displays (LCDs).
[0054] Figure 2 This is a schematic diagram illustrating the relationship between the light source 10 and the condenser lens 20 according to an embodiment of the present invention. Figure 3 This is a schematic diagram illustrating a condenser lens 20 according to an embodiment of the present invention. Figure 4 This is a schematic diagram illustrating the relationship between the light source 10, the condenser lens 20, and the reflector 30 according to an embodiment of the present invention, wherein the light source 10 and the condenser lens 20 are tilted relative to the reflector 30.
[0055] refer to Figures 2 to 4 According to an embodiment of the present invention, the condenser lens 20 may extend in a plane direction parallel to the light source 10, and may be an off-axis lens, wherein the focal axis is located outside the outermost end of the condenser lens 20.
[0056] like Figure 2 As shown, the condenser lens 20 can be a lens configured to refract light incident on it, thereby converging the light to a focal point. Specifically, the condenser lens 20 can be part of a convex lens or a Fresnel lens, with dimensions corresponding to the dimensions of the light source 10. In one embodiment, the dimensions of the condenser lens 20 can be the same as those of the light source 10.
[0057] Furthermore, the condenser lens 20 may be part of a convex lens or Fresnel lens located at a certain distance from the outermost edge of the convex lens or Fresnel lens (which defines the diameter of the convex lens or Fresnel lens). Accordingly, the quality and size of the image can be ensured. In one embodiment, the condenser lens 20 may be part of a convex lens or Fresnel lens located such that the outermost end of the condenser lens 20 is at a distance L = 0.05R from the outermost edge of the convex lens or Fresnel lens.
[0058] Specifically, the condenser lens 20 can be configured to have a rectangular or square shape. Furthermore, the condenser lens 20 can be configured such that the focal axis of the incident light (which extends parallel to the light from the focal point) is located outside the outermost end of the condenser lens 20.
[0059] Specifically, the off-axis angle can be limited to between the minimum and maximum off-axis angles. Minimum off-axis angle (θ) L ) and maximum off-axis angle (θ) U It can be determined as follows.
[0060]
[0061]
[0062] Here, R is the radius of the convex lens or Fresnel lens, F is the focal length of the condenser lens 20, W is the size of the light source 10, and L is the distance between the outermost edge of the light source 10 and the outermost end of the convex lens or Fresnel lens.
[0063] The focal axis of the condenser lens 20 can be located outside the outermost end of the condenser lens 20, such that the minimum off-axis angle (θ) is achieved. L ) is greater than 0 (RL>W).
[0064] The distance T between the dual reflector array 40 and the reflector 30 can be set to maximize the off-axis angle (θ). U It satisfies the following equation.
[0065] W U =2T×tanθ U
[0066] W U -W=2T×tanθ U -W>0
[0067] Here, W U It is the distance required to make the focal point of the light refracted at the maximum off-axis angle located outside the condenser lens 20.
[0068] The condenser lens 20 may be part of a Fresnel lens that arranges multiple prisms for refracting incident light coaxially.
[0069] The problem with ordinary convex lenses is their large size and difficulty in installation. To solve this problem, Fresnel lenses can be used, which consist of multiple coaxially arranged prisms configured in a plate shape.
[0070] Fresnel lenses can be manufactured in such a way that multiple bands coaxial at the center of the lens are formed or shaped into a flat shape.
[0071] The condenser lens 20 can be arranged spaced apart from and facing the reflector 30. The condenser lens 20 can be tilted so that it gradually approaches the reflector 30 from one end to the other. The light source 10 can be arranged parallel to the condenser lens 20 and can be tilted together with the condenser lens 20.
[0072] Specifically, one end of the condenser lens 20 can be the outermost end closest to the focal axis of the condenser lens 20, and the other end of the condenser lens 20 can be the outermost end furthest from the focal axis of the condenser lens 20.
[0073] In other words, the condenser lens 20 can be tilted so that it gradually approaches the reflector 30 from the end closest to the focal axis to the end furthest from the focal axis.
[0074] Specifically, the condenser lens 20 can be tilted at a certain angle, which satisfies the first requirement and the second requirement. The first requirement is that the other end of the condenser lens 20 should be spaced apart from the reflector 30. The second requirement is that the focal axis of the light refracted at the other end of the condenser lens 20 and then reflected by the reflector 30 should be located outside one end of the condenser lens 20.
[0075] With the condenser lens 20 tilted relative to the reflector 30, the angle (θ) between the condenser lens 20 and the reflector 30 is... tilt It can be set to meet the following requirements.
[0076] T > T tilt ---(1)
[0077] W U -W tilt =(2T-W×sin(θ) tilt ))×tan(θ U +θ tilt )-W×cos(θ tilt )>0---(2)
[0078] Specifically, when the condenser lens 20 is at an angle θ relative to the reflector 30 tilt When tilted at an angle, it is set such that the maximum off-axis angle (θ) is reached. U The focal axis of the light refracted at the condenser lens 20 is located at the distance (W) between the near end of the dihedral reflector array 40 outside the condenser lens 20 and the other end of the condenser lens 20. U ), the height of the dihedral reflector array 40 measured from the second end of the condenser lens 20 (T) tilt ) and the horizontal width (W) of the condenser lens 20 tilt )as follows.
[0079] W U =(2T-T) tilt )×tan(θ U +θ tilt )
[0080] T tilt =W×sin(θ) tilt )
[0081] W tilt =W×cos(θ) tilt )
[0082] Correspondingly, when θ tiltAt an angle of 32 degrees, the distance (T) between the dihedral reflector array 40 and the reflector 30 can be minimized. Specifically, compared to the case where the condenser lens 20 is not tilted, the distance (T) can be reduced to approximately half.
[0083] The width (M) of the reflector 30 can be calculated as follows. Therefore, the width (M) of the reflector 30 can be set to approximately 1.24 times the width (W) of the display.
[0084] M = W × (cosθ) tilt +tanθ tilt ×tan(θ L +θ tilt ))
[0085] Figure 5 This is a schematic diagram showing the arrangement of the reflector 30 and the dual reflector array 40 according to an embodiment of the present invention.
[0086] In one embodiment, the reflector 30 may be arranged to face both the condenser lens 20 and the dihedral reflector array 40, which are spaced apart from each other in a planar direction.
[0087] In other words, the condenser lens 20 and the dihedral reflector array 40 can be arranged in the same direction, and the reflector 30 can be arranged such that its reflective surface faces both the condenser lens 20 and the dihedral reflector array 40.
[0088] Specifically, the reflector 30 can extend in a direction parallel to the extension direction of the dihedral reflector array 40.
[0089] In another embodiment, the reflector 30 may be arranged to be tilted relative to the dihedral reflector array 40 at a predetermined angle, which is determined taking into account the ghosting display area (where ghosting occurs due to the reflection of incident light at the dihedral reflector array 40).
[0090] When using the dihedral reflector array 40, unwanted ghosting may occur depending on the viewing angle and the distance between the reflector and the display. Ghosting can be eliminated by inspecting the ghosting display area on the dihedral reflector array 40 and placing the display outside the ghosting display area.
[0091] Specifically, the ghosting display area can be generated by an odd number of light reflections from the mirrors of the dual reflector array 40. Since the resulting normal floating image is wider than the ghosting display area, the ghosting can be eliminated if the monitor is located outside the ghosting display area.
[0092] In one embodiment, the light source 10 may be located outside the ghosting display area on the dihedral reflector array 40.
[0093] In another embodiment, the reflector 30 can be positioned relative to the dihedral reflector array 40 at a predetermined angle (θ) determined to account for the ghosting display area. G The arrangement is tilted and not parallel to the two-sided reflector array 40.
[0094] Specifically, the reflector 30 can be tilted such that the normal of its planar surface is parallel to the boundary of the ghosting display area.
[0095] The boundary of the ghosting display area can be extended outward from a predetermined angle (θ) from a line perpendicular to the dihedral reflector array 40. G The reflector 30 can be tilted relative to the dual reflector array 40 at a predetermined angle (θ). G Alternatively, the normal to reflector 30 can be arranged parallel to the boundary of the ghosting display area. Here, a predetermined angle (θ) G It can be approximately 12 degrees.
[0096] Therefore, since the light source 10 or the condenser lens 20 is not visible at the reflector 30, it has the effect of eliminating ghosting.
[0097] Figure 6 This is a schematic diagram illustrating the structure of a dihedral reflector array 40 according to an embodiment of the present invention.
[0098] refer to Figure 6 The dual-reflector array 40 can be composed of an upper plate 41 and a lower plate 42, each of which includes mirrors stacked on top of each other in a planar direction. The mirrors of the upper plate 41 and the lower plate 42 can extend in directions that intersect each other.
[0099] Each of the upper plate 41 and lower plate 42 of the dual reflector array 40 may include a light-transmitting material (e.g., glass) that allows incident light to pass through, and a reflector arranged in the light-transmitting material in a planar direction. The reflectors may be arranged at 1 mm intervals.
[0100] The reflectors of the upper plate 41 and the lower plate 42 can extend along the planar surface of the dual reflector array 40 in intersecting directions, and can be arranged in intersecting directions. Specifically, the reflectors of the upper plate 41 and the lower plate 42 can intersect each other at a right angle (90 degrees).
[0101] In another embodiment, the dihedral reflector array 40 may also consist of a single panel and mirrors arranged in the panel and extending in directions that intersect each other.
[0102] The dual reflector array 40 can be configured such that the reflectors extend in directions perpendicular to each other, and the light reflected by the reflector 30 is incident obliquely on the individual reflectors extending in directions intersecting each other.
[0103] In other words, in order for light incident on one surface of the dihedral reflector array 40 to be reflected by the mirrors extending at right angles in directions that intersect each other, and to exit from the other surface of the dihedral reflector array 40, light incident on the dihedral reflector array 40 can be obliquely incident on each mirror.
[0104] Refer again Figure 1 According to an embodiment of the present invention, the device for displaying a suspended image can be configured such that the reflector 30 is spaced apart from the dihedral reflector array 40 (gap G), and at an angle (θ) relative to the plane direction parallel to the dihedral reflector array 40. M )tilt.
[0105] The light source 10 and the condenser lens 20 can be positioned relative to the reflector 30 at an angle (θ). D Therefore, the light source 10 and the condenser lens 20 can be tilted relative to the plane parallel to the dihedral reflector array 40 at an angle (θ). D -θ M )tilt.
[0106] Therefore, the maximum distance (gap G) between the reflector 30 and the dihedral reflector array 40 is reduced to about 44% or less of the distance (F) between the suspended image I and the dihedral reflector array 40.
[0107] Figure 7 and Figure 8 This is a schematic diagram illustrating a vehicle display module according to an embodiment and another embodiment of the present invention, each vehicle display module including means for displaying a floating image.
[0108] refer to Figure 7 and Figure 8 According to each of the two embodiments of the present invention, the vehicle display module may further include an internal structure S extending along a plane extending from the dihedral reflector array 40. The internal structure S may be a vehicle dashboard or console panel, and the floating image may be formed above the internal structure S or between the device and the occupant.
[0109] Here, the internal structure S can be the vehicle's dashboard or a console panel that includes the vehicle's audio video navigation (AVN) unit.
[0110] The dual reflector array 40 can be arranged parallel to the internal structure S and can form a floating image in the upward direction or at a position away from the dual reflector array 40 towards the occupants.
[0111] In one implementation, when the dual reflector array 40 is mounted on the vehicle dashboard, the floating image can be positioned above the dashboard and can display content related to driving assistance or destination address.
[0112] In another embodiment, when the dual reflector array 40 is mounted on a console panel located in front of the occupants, a floating image can be formed in front of the passengers. In this case, the display module can display information related to driving the vehicle and can recognize the occupants' postures, thereby enabling control of AVN, air conditioning, etc.
[0113] As is evident from the above description, the present invention provides an apparatus for displaying levitation images and a vehicle display module including the apparatus, wherein light from a light source is incident on a dual reflector array through a focusing lens and a reflector, thereby providing, unlike conventional technologies, the effect of reducing the device volume symmetrical to the levitation height of the levitation image.
[0114] In addition, it can provide the effect of eliminating ghosting, which is produced when light is reflected an odd number of times in a dihedral reflector array.
[0115] Although preferred embodiments of the invention have been described above with reference to the accompanying drawings, those skilled in the art will understand that the invention can be implemented in various other embodiments without changing its technical concept or features.
Claims
1. An apparatus for displaying levitation images, comprising: The light source is configured as follows: Extending in the planar direction; Emitting light to achieve the levitation image; The condenser lens is configured as follows: Extending in a direction parallel to the light source; To refract light; The reflector is configured as follows: Facing the condenser lens; To reflect the light refracted at the focusing lens; and A dual-reflector array configured to extend in a planar direction and include mirrors extending in directions that intersect each other; Wherein, the first surface of the dual-face reflector array is configured to face the reflector plate, such that: The reflected light is incident on the first surface; The reflected light is reflected by the mirror and then exits from the second surface of the double reflector array, thereby creating a suspended image at a position spaced apart from the second surface. The condensing lens is spaced apart from the reflector to face the reflector, and the condensing lens is tilted such that the condensing lens gradually approaches the reflector from the first end of the condensing lens to the second end of the condensing lens. The tilt angle of the condenser lens shall meet the following requirements: The second end of the condenser lens is spaced apart from the reflector; The focal axis of the light refracted at the second end of the condenser lens and reflected by the reflector is located outside the first end of the condenser lens.
2. The apparatus for displaying levitation images according to claim 1, wherein, The light source includes: The display panel is configured to generate light at positions spaced apart from the array of two reflectors to achieve a levitating image.
3. The apparatus for displaying levitation images according to claim 1, wherein, The focusing lens includes: An off-axis lens is configured to extend in a plane parallel to the light source, wherein the focal axis of the off-axis lens is located outside the outermost end of the condenser lens.
4. The apparatus for displaying levitation images according to claim 1, wherein, The focusing lens includes: A Fresnel lens, wherein multiple prisms are arranged coaxially to refract incident light.
5. The apparatus for displaying levitation images according to claim 1, wherein, The first end of the condenser lens is the outermost end that is closest to the focal axis of the condenser lens, and the second end of the condenser lens is the outermost end that is furthest from the focal axis of the condenser lens.
6. The apparatus for displaying levitation images according to claim 1, wherein, The reflector is configured to face both a condenser lens and a dihedral reflector array that are spaced apart from each other in a planar direction.
7. The apparatus for displaying levitation images according to claim 1, wherein, The reflector is arranged to be tilted at a predetermined angle relative to the array of two reflectors, the predetermined angle being determined based on the ghosting display area, in which ghosting is produced due to the reflection of incident light at the array of two reflectors.
8. The apparatus for displaying levitation images according to claim 7, wherein, The reflector is tilted so that the normal is parallel to the boundary of the ghosting display area.
9. The apparatus for displaying levitation images according to claim 1, wherein, The dual-face reflector array includes: The upper plate and the lower plate, each of the upper plate and the lower plate including a reflector arranged in a planar direction, the reflectors of the upper plate and the reflectors of the lower plate extending in directions intersecting each other.
10. The apparatus for displaying levitation images according to claim 1, wherein, The dual reflector array is configured such that the reflectors extend in directions that intersect each other at right angles, and the light reflected by the reflector plate is incident obliquely on each of the reflectors extending in the intersecting directions.
11. A vehicle display module, comprising: A device for displaying levitation images, comprising: The light source is configured as follows: Extending in the planar direction; Emitting light to achieve the levitation image; The condenser lens is configured as follows: Extending in a direction parallel to the light source; To refract light; The reflector is configured as follows: Facing the condenser lens; To reflect light refracted at the condenser lens; and A dual-reflector array configured to extend in a planar direction and include mirrors extending in directions that intersect each other; Wherein, the first surface of the dual-face reflector array is configured to face the reflector, such that: The reflected light is incident on the first surface. The reflected light is then reflected by a mirror and exits from the second surface of the double-faced reflector array, thus creating a suspended image at a position spaced apart from the second surface; and The internal structure extends in the direction of the two-sided reflector array; The internal structure includes the vehicle's dashboard or console panel, and the floating image is formed above the internal structure or between the device and the occupant. The condensing lens is spaced apart from the reflector to face the reflector, and the condensing lens is tilted such that the condensing lens gradually approaches the reflector from the first end of the condensing lens to the second end of the condensing lens. The tilt angle of the condenser lens shall meet the following requirements: The second end of the condenser lens is spaced apart from the reflector; The focal axis of the light refracted at the second end of the condenser lens and reflected by the reflector is located outside the first end of the condenser lens.