CN117270180A - Mobile system, display device thereof and method for generating virtual image - Google Patents
Mobile system, display device thereof and method for generating virtual image Download PDFInfo
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- 230000003287 optical effect Effects 0.000 description 9
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- G—PHYSICS
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- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
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Abstract
A mobile system and a display device thereof, a method for generating a virtual image, wherein the display device is used for being installed on a mobile device with a transmission type imaging component, so that a light beam generated by the display device is projected on the transmission type imaging component to form a virtual image, and the display device comprises a display component, a first reflection component and a second reflection component. The display assembly emits light. The light enters the first reflecting component through a first light path, the light enters the second reflecting component through a second light path after being reflected by the first reflecting component, the light exits the second reflecting component through a third light path after being reflected by the second reflecting component, and the display equipment generates the light beam. The distance from the center point of the first reflection assembly to the center point of the second reflection assembly is larger than the distance from the center point of the first reflection assembly to the center point of the display assembly.
Description
Technical Field
The invention relates to a mobile system, a display device thereof and a method for generating virtual images.
Background
In addition to the continuous trend toward miniaturization, the present display device has a high resolution and low distortion, and the existing display device cannot meet the present requirements, especially for an automobile, and further needs to have another display device with a new architecture to meet the requirements of miniaturization, high resolution and low distortion.
Disclosure of Invention
The invention aims to solve the technical problem that the display equipment in the prior art cannot meet the requirements of miniaturization, high resolution and low distortion at the same time, and provides the display equipment which has smaller volume, higher resolution and smaller distortion.
The invention provides a display device which is used for being installed on a mobile device with a transmission type imaging component, so that a light beam generated by the display device is projected on the transmission type imaging component to form a virtual image, and the display device comprises a display component, a first reflecting component and a second reflecting component. The display assembly emits light. The light enters the first reflecting component through a first light path, the light enters the second reflecting component through a second light path after being reflected by the first reflecting component, and the light exits the second reflecting component through a third light path after being reflected by the second reflecting component, so that the display device generates the light beam and emits the light beam to the transmission type imaging component to form an image. The distance from the center point of the first reflection assembly to the center point of the second reflection assembly is larger than the distance from the center point of the first reflection assembly to the center point of the display assembly.
The third light path is staggered with the first light path, and the second reflecting component is positioned outside the first light path.
The first reflecting component is a plane mirror or a prism, and the second reflecting component is a curved mirror.
And a space is formed between the first reflecting component center point and the second reflecting component center point, a space is formed between the first reflecting component center point and the display component center point, a space is formed between the display component center point and the second reflecting component center point, and the absolute value of the difference value of any two spaces is smaller than 20mm.
Wherein the first reflecting component, the second reflecting component and the display component are quadrilateral, circular or elliptical in appearance.
Wherein the perimeter of the first reflective element is smaller than the perimeter of the second reflective element.
The included angle between the incident light and the reflected light of the light incident on the central point of the first reflecting component is larger than the included angle between the incident light and the reflected light of the light incident on the central point of the second reflecting component.
Wherein the display device satisfies at least one of the following conditions: G/E is more than or equal to 0.9 and less than or equal to 1; 62.8-79.5 (MA/DA) +gamma; 11.4 degree 2 Beta x gamma of/mm D is less than or equal to 16.1 DEG 2 /mm;3.3 mm/degree is less than or equal to (E+D)/gamma is less than or equal to 5.1 mm/degree; gamma/beta is more than or equal to 1.5 and less than or equal to 2.1; D/H is more than or equal to 13 and less than or equal to 20; h is more than or equal to 6.8mm and less than or equal to 7.8mm; beta is more than or equal to 25 degrees and less than or equal to 35 degrees; wherein G is the distance from the center point of the display element to the center point of the second reflection element, E is the distance from the center point of the display element to the center point of the first reflection element, MA is the area of the first reflection element, DA is the area of the display element, gamma is the angle between the incident light ray and the reflected light ray of the light ray incident on the center point of the first reflection element, beta is the angle between the incident light ray and the reflected light ray of the light ray incident on the center point of the second reflection element, D is the distance from the center point of the first reflection element to the center point of the second reflection element, and H is a depth of the normal vector direction of the center point of the second reflection element.
Wherein the transmission type imaging component can be a windshield of a mobile device or an additional screen.
A method of generating a virtual image, comprising the steps of: providing a transmission-type imaging component, wherein the transmission-type imaging component is provided with a first surface and a second surface, and the first surface faces to a first side and the second surface faces to a second side; providing a display device as described above for generating the light containing the image signal and reflecting the light to form the light beam; and making the light beam incident on the transmission type imaging component from the first surface, reflected by the transmission type imaging component and then incident on the human eye positioned on the first side, so that when the human eye positioned on the first side observes the transmission type imaging component towards the second side, a virtual image generated by the light beam can be seen, and the virtual image is positioned on the second side.
A mobile system, comprising: the display device as described above, the display device being disposed inside the mobile system; a transmission type imaging component which is arranged on the moving system; the moving assembly is arranged on the moving system and used for enabling the moving system to generate displacement; the transparent imaging component comprises a first surface and a second surface, wherein the first surface faces to the first side, and the second surface faces to the second side; the display device generates the light beam to emit to the first surface, and the first surface reflects the light beam to generate a virtual image.
The display device for implementing the invention has the following beneficial effects: the device has smaller volume, higher resolution and smaller distortion.
Drawings
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Fig. 1 is a schematic view of an embodiment of a display device according to the present invention.
Fig. 2 is a partial enlarged view of an embodiment of a display device according to the present invention.
Fig. 3 is a Grid Distortion (Grid Distortion) diagram of an embodiment of a display device according to the present invention.
Fig. 4 is a light point Diagram (Spot Diagram) of an embodiment of a display device according to the invention.
Detailed Description
The invention provides a display device, which is used for being installed on a mobile device with a transmission type imaging component, and enables a light beam generated by the display device to be projected on the transmission type imaging component so as to form a virtual image, wherein one embodiment comprises the following components: a display component which emits light; a first reflective component; a second reflective component; the method comprises the steps of carrying out a first treatment on the surface of the The light rays are incident to the first reflecting component through a first light path, reflected by the first reflecting component, are incident to the second reflecting component through a second light path, and are emitted out of the second reflecting component through a third light path after being reflected by the second reflecting component, so that the display equipment generates the light beams and emits the light beams to the transmission type imaging component to form images; the distance from the center point of the first reflecting component to the center point of the second reflecting component is larger than the distance from the center point of the first reflecting component to the center point of the display component, so that the embodiment can achieve basic operation.
Another embodiment of the display device of the present invention and its use state will now be described in detail. Please refer to fig. 1 and fig. 2 at the same time. The display device 1 comprises a display assembly 10, a first reflective assembly 20 and a second reflective assembly 30. The transmission type imaging assembly 40 on a mobile device (not shown) includes a first surface 401 and a second surface 402, the first surface 401 faces a first side FS, and the second surface 402 faces a second side SS. The display device 10 emits light 101 to the first reflecting device 20, the first reflecting device 20 reflects the light 101 to the second reflecting device 30, the second reflecting device 30 reflects the light 101, so that the display device generates a light beam to the transmissive imaging device 40, the transmissive imaging device 40 reflects the light 101 to the first side FS, the human eye 50 is located at the first side FS, the user can see through the eyes that the virtual image 60 of the display device 10 is located at the second side SS, at this time, the distance between the human eye 50 and the virtual image 60 is a, and the angle between the line connecting the human eye 50 and the virtual image 60 and the horizontal line is α. In this embodiment, the first reflecting element 20 may be a plane mirror, and in other embodiments, may be a reflecting element such as a prism or the like for turning the light path. The transmissive imaging member 40 may be a windshield or screen of a mobile device, such as but not limited to when the present invention is applied to a Head Up Display (HUD), where the transmissive imaging member 40 may be a windshield of an automobile or a screen in the driver's field of view, such as but not limited to a retrofit screen provided on the windshield. The second reflecting element 30 has a concave surface and a convex surface, and in this embodiment, the second reflecting element 30 is a free-form surface, and reflects light with the concave surface, and in other embodiments, the light can be reflected with the convex surface, i.e. the light first penetrates the concave surface after entering the second reflecting element, and then penetrates the concave surface after being reflected by the convex surface, and leaves the second reflecting element. The optical path between the display element 10 and the first reflection element 20 is the first optical path, the optical path between the first reflection element 20 and the second reflection element 30 is the second optical path, and the optical path between the second reflection element 30 and the transmissive imaging element 40 is the third optical path. The third light path is staggered with the first light path, and the second reflecting element 30 is located outside the first light path.
The design of the display device 1 of the above-described embodiment contributes to miniaturization, improvement of resolution, and reduction of distortion; in addition, the display device of other embodiments may be configured in the same manner as the display device 1 of the foregoing embodiments, and the difference is that at least one of the following conditions may be met, so that the display device of other embodiments may effectively improve resolution and effectively reduce distortion:
0.9≤G/E≤1； (1)
62.8≤(MA/DA)+γ≤79.5； (2)
11.4 degree 2 Beta x gamma of/mm D is less than or equal to 16.1 DEG 2 /mm； (3)
3.3 mm/degree is less than or equal to (E+D)/gamma is less than or equal to 5.1 mm/degree; (4)
1.5≤γ/β≤2.1； (5)
13≤D/H≤20； (6)
6.8mm≤H≤7.8mm； (7)
Beta is more than or equal to 25 degrees and less than or equal to 35 degrees; (8)
Wherein G is the distance from the center point of the display element 10 to the center point of the second reflection element 30, E is the distance from the center point of the display element 10 to the center point of the first reflection element 20, MA is the area of the first reflection element 20, DA is the area of the display element 10, γ is the angle between the incident light ray of the light ray 101 incident on the center point of the first reflection element 20 and the reflected light ray, β is the angle between the incident light ray of the light ray 101 incident on the center point of the second reflection element 30 and the reflected light ray, D is the distance from the center point of the first reflection element 20 to the center point of the second reflection element 30, and H is a depth in the normal vector direction of the center point of the second reflection element 30. Taking the first reflecting component as an example, taking the center of the shape of the outer contour of the corresponding component as the reference, and taking the center point of the first reflecting component as the center when the outer contour of the first reflecting component is circular; when the outer contour of the first reflecting component is elliptical, the central point of the first reflecting component is the point at which the long axis and the short axis intersect; when the outer contour of the first reflecting component is polygonal, the center point of the first reflecting component is the geometric center of the polygon.
When the condition (1) is satisfied: when G/E is more than or equal to 0.9 and less than or equal to 1, the resolution can be effectively improved, and the position of the plane mirror is ensured to reduce the volume.
When the condition (2) is satisfied: when (MA/DA) +gamma is less than or equal to 62.8 and less than or equal to 79.5, the assembly can be effectively reduced, and the volume is reduced.
When the condition (3) is satisfied: 11.4 degree 2 Beta x gamma of/mm D is less than or equal to 16.1 DEG 2 At/mm, the included angle between the incident light and the reflected light can be effectively controlled to improve the resolution.
When the condition (4) is satisfied: when the (E+D)/gamma is less than or equal to 3.3 mm/degree and less than or equal to 5.1 mm/degree, the resolution can be effectively improved.
When the condition (5) is satisfied: when gamma/beta is more than or equal to 1.5 and less than or equal to 2.1, the resolution can be effectively improved.
When the condition (6) is satisfied: when D/H is more than or equal to 13 and less than or equal to 20, the resolution can be effectively improved.
When the condition (7) is satisfied: when H is more than or equal to 6.8mm and less than or equal to 7.8mm, the curvature of the second reflecting component can be effectively controlled so as to ensure the imaging position and improve the resolution.
When the condition (8) is satisfied: when the angle beta is more than or equal to 25 and less than or equal to 35 degrees, the distortion can be effectively reduced, and the mechanism is ensured to have no interference.
Table one is a table of related parameters of components of the display device of other embodiments.
List one
The aspherical surface dishing degree z of the aspherical mirror in table one is obtained by the following formula: z=cr 2 /{1+[1-(k+1)c 2 r 2 ] 1/2 }+A 1 x+A 2 y+A 3 x 2 +A 4 xy+A 5 y 2 +....+A 53 x 8 y+A 54 y 9 The method comprises the steps of carrying out a first treatment on the surface of the Wherein: c: curvature; r: a perpendicular distance from any point of the mirror surface to the optical axis; k: a conic coefficient; a is that 1 ～A 54 : aspheric coefficients.
The second table is a table of related parameters of the aspherical surface of the aspherical mirror in the first table.
Watch II
Table three is the calculated values of the relevant parameter values and the corresponding conditions (1) to (8) of the display device according to the other embodiments of table one. The values of the relevant parameters in the first table and the third table can have assembly or measurement errors of 0.1mm and 5 degrees. As can be seen from table three, the display device according to the other embodiments of table one can meet the requirement of at least one of the conditions (1) to (8).
Watch III
| G | 104.3mm | E | 110mm | MA | 5616mm 2 |
| DA | 720mm 2 | γ | 55 degrees | β | 30 degrees |
| D | 120mm | H | 7.31mm | ||
| G/E | 0.95 | (MA/DA)+γ | 62.8 | β×γ/D | 13.75 degree 2 /mm |
| (E+D)/γ | 4.18 mm/degree | γ/β | 1.83 | D/H | 16.42 |
In addition, the optical performance of the display device according to another embodiment can also meet the requirements, and as can be seen from fig. 3, the display device according to another embodiment has a maximum grid distortion of 2.14% when the field of view is 0.00mm or 0.00mm, and the maximum grid distortion of the remaining field of view is 2.66%, which is similar to that of fig. 3, and therefore, the illustration thereof is omitted. As can be seen from FIG. 4, the display device of the other embodiment has a Root Mean Square (Root Mean Square) radius of 37.145 μm, a geometric radius of 71.581 μm, a geometric radius of 91.748 μm, a geometric radius of 173.568 μm, a geometric radius of-9.00 mm, a geometric radius of 150.158 μm, a geometric radius of 220.031 μm, a geometric radius of 20.00mm, a geometric radius of 40.299 μm, a geometric radius of 70.087 μm, the Root Mean Square radius of the light spot is 40.299 μm, the geometric radius of the light spot is 70.087 μm when the object position is-20.00 mm and 0.00mm, the Root Mean Square radius of the light spot is 104.680 μm when the object position is 20.00mm and 9.00mm, the geometric radius of the light spot is 195.820 μm, the geometric radius of the light spot is 104.680 μm when the object position is-20.00 mm and 9.00mm, the geometric radius of the light spot is 195.820 μm, the geometric radius of the light spot is-20.00 mm and-9.00 mm, the geometric radius of the light spot is 143.608 μm, the geometric radius of the light spot is 240.704 μm, and the geometric radius of the light spot is 240.704 μm when the object position is 20.00mm and-9.00 mm, the geometric radius of the light spot is 143.608 μm. It is apparent that the distortion of the display device of other embodiments can be effectively corrected to obtain better optical performance.
The distance between the center point of the first reflecting element and the center point of the second reflecting element, the distance between the center point of the first reflecting element and the center point of the display element, and the distance between the center point of the display element and the center point of the second reflecting element are not limited to the values in the table one, and in other embodiments, the absolute value of the difference between any two distances is smaller than 20mm, which is helpful for improving resolution and reducing volume. The angle between the incident light and the reflected light of the light incident on the center point of the first reflecting component and the angle between the incident light and the reflected light of the light incident on the center point of the second reflecting component are not limited to the values in the table one, and in other embodiments, the angle between the incident light and the reflected light of the light incident on the center point of the first reflecting component is larger than the angle between the incident light and the reflected light of the light incident on the center point of the second reflecting component, which can help to improve the resolution.
The display element, the first reflecting element, the second reflecting element and the transmissive imaging element in the above embodiments may have any shape, such as a circle, an ellipse, a polygon, and the like, and preferably have a quadrilateral shape, which is helpful for reducing the volume and improving the imaging brightness; when the display element, the first reflective element, the second reflective element, and the transmissive imaging element in table one are quadrilateral, the display element may be 40mm×18mm in size, the first reflective element may be 104mm×54mm in size, the second reflective element may be 162mm×84mm in size, and the transmissive imaging element may be 156mm×120mm in size. The values of the side lengths of the above components can be actually adjusted according to the requirements, so long as the area of the first reflecting component and the area of the second reflecting component are larger than the area of the display component, or the perimeter of the first reflecting component and the perimeter of the second reflecting component are larger than the perimeter of the display component, thereby being beneficial to enlarging the imaging range and effectively utilizing the light source. In other embodiments, the perimeter of the second reflective element may be greater than or equal to the perimeter of the first reflective element, or the perimeter of the first reflective element may be less than or equal to the perimeter of the second reflective element. The first reflective element contributes to downsizing and securing of imaging position when the perimeter of the first reflective element is smaller than the perimeter of the second reflective element.
The first reflective element in the above embodiments is disposed closer to the human eye than the display element, but in practice the display element may be disposed closer to the human eye than the first reflective element, i.e. the first reflective element in the above embodiments may be positioned opposite to the display element.
The method of generating a virtual image of the present invention is described below with reference to fig. 1: a first step of: a transmissive imaging assembly 40 is provided, the transmissive imaging assembly 40 having a first side 401 and a second side 402, the first side 401 facing a first side FS and the second side 402 facing a second side SS, followed by a second step. And a second step of: a display device 1 is provided for generating light rays 101 containing image signals and reflecting the light rays 101 to form light beams, and then a third step is performed. And a third step of: the light beam is incident on the transmissive imaging member 40 from the first surface 401, and is reflected by the transmissive imaging member 40 and then incident on the human eye 50 located on the first side FS, so that when the human eye 50 located on the first side FS views the transmissive imaging member 40 toward the second side SS, a virtual image 60 generated by the light ray 101 including the image signal can be seen, and the virtual image 60 is located on the second side SS.
An embodiment of the mobile system of the present invention is described below with reference to fig. 1. The mobile system (not shown) of the present invention includes a display device, a transmissive imaging device 40 and a mobile device (not shown), wherein the display device is disposed inside the mobile system (not shown), and the display device includes a display device 10, a first reflecting device 20 and a second reflecting device 30, and the display device is described in any of the first to twenty-eighth paragraphs according to the description of the embodiment, and therefore will not be repeated. The transmissive imaging assembly 40 is disposed on the moving system (not shown), the transmissive imaging assembly 40 includes a first surface 401 and a second surface 402, the first surface 401 faces the first side FS, the second surface 402 faces the second side SS, the moving assembly (not shown) is disposed on the moving system for displacing the moving system, the display device generates a light beam to the first surface 401, and the first surface 401 reflects the light beam to generate a virtual image.
In the above embodiments, the moving system (not shown) may be a road vehicle (e.g., a train, a locomotive with a wind screen or a screen, a scooter, a bus), a water vehicle (e.g., a ship, a yacht, a motorcycle on water), or an air vehicle (e.g., an airplane, a light plane, a helicopter), the transmission type imaging component may be a windshield of the above vehicle, the moving component (not shown) may include an engine or a motor or the like for displacing the moving system, and the moving component (not shown) may further include a tire, a propeller, a turbine or the like according to the moving manner of the above different vehicles.
While the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A display device for mounting on a mobile device having a transmissive imaging assembly, such that a light beam generated by the display device is projected onto the transmissive imaging assembly to form a virtual image, comprising:
a display assembly that emits light;
a first reflective component; and
a second reflective component;
the light rays are incident to the first reflecting component through a first light path, are reflected by the first reflecting component, are incident to the second reflecting component through a second light path, are reflected by the second reflecting component, are emitted out of the second reflecting component through a third light path, and are led to generate the light beam by the display equipment;
the distance from the center point of the first reflecting component to the center point of the second reflecting component is larger than the distance from the center point of the first reflecting component to the center point of the display component.
2. The display device of claim 1, wherein the third light path is interleaved with the first light path and the second reflective element is located outside the first light path.
3. The display apparatus of claim 1, wherein the first reflective element is a flat mirror or a prism, the second reflective element is a curved mirror, and the transmissive imaging element is a windshield or add-on screen of a mobile device.
4. The display device of claim 1, wherein a spacing is included between the first reflective element center point and the second reflective element center point, wherein a spacing is included between the first reflective element center point and the display element center point, wherein a spacing is included between the display element center point and the second reflective element center point, and wherein an absolute value of a difference between any two of the spacing is less than 20mm.
5. The display device of claim 1, wherein a perimeter of the first reflective component is less than a perimeter of the second reflective component.
6. The display device of claim 5, wherein the first reflective element, the second reflective element, and the display element are quadrilateral, circular, or elliptical in shape.
7. The display device of claim 1, wherein an angle between an incident light ray incident on the center point of the first reflective element and a reflected light ray is greater than an angle between an incident light ray incident on the center point of the second reflective element and a reflected light ray.
8. A display device as claimed in any one of claims 1 to 7, characterized in that the display device fulfils at least one of the following conditions:
0.9≤G/E≤1；
62.8≤(MA/DA)+γ≤79.5；
11.4 degree 2 Beta x gamma of/mm D is less than or equal to 16.1 DEG 2 /mm；
3.3 mm/degree is less than or equal to (E+D)/gamma is less than or equal to 5.1 mm/degree;
1.5≤γ/β≤2.1；
13≤D/H≤20；
6.8mm≤H≤7.8mm；
beta is more than or equal to 25 degrees and less than or equal to 35 degrees;
wherein G is the distance from the center point of the display element to the center point of the second reflection element, E is the distance from the center point of the display element to the center point of the first reflection element, MA is the area of the first reflection element, DA is the area of the display element, gamma is the angle between the incident light ray and the reflected light ray of the light ray incident on the center point of the first reflection element, beta is the angle between the incident light ray and the reflected light ray of the light ray incident on the center point of the second reflection element, D is the distance from the center point of the first reflection element to the center point of the second reflection element, and H is a depth of the normal vector direction of the center point of the second reflection element.
9. A method of generating a virtual image, comprising the steps of:
providing a transmission-type imaging component, wherein the transmission-type imaging component is provided with a first surface and a second surface, and the first surface faces to a first side and the second surface faces to a second side;
providing a display device according to any one of claims 1-8 for generating the light containing an image signal and reflecting the light to form the light beam; and
the light beam is made to enter the transparent imaging component from the first surface and then is reflected by the transparent imaging component to enter the human eye on the first side, so that when the human eye on the first side observes the transparent imaging component towards the second side, a virtual image generated by the light beam can be seen, and the virtual image is positioned on the second side.
10. A mobile system, comprising:
the display device of any one of claims 1-8, disposed inside the mobile system;
a transmission type imaging component which is arranged on the moving system; and
the moving component is arranged on the moving system and used for enabling the moving system to generate displacement;
the transparent imaging component comprises a first surface and a second surface, wherein the first surface faces to the first side, and the second surface faces to the second side;
the display device generates the light beam to emit to the first surface, and the first surface reflects the light beam to generate a virtual image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664802.7A CN117270180A (en) | 2022-06-14 | 2022-06-14 | Mobile system, display device thereof and method for generating virtual image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664802.7A CN117270180A (en) | 2022-06-14 | 2022-06-14 | Mobile system, display device thereof and method for generating virtual image |
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| Publication Number | Publication Date |
|---|---|
| CN117270180A true CN117270180A (en) | 2023-12-22 |
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| CN202210664802.7A Pending CN117270180A (en) | 2022-06-14 | 2022-06-14 | Mobile system, display device thereof and method for generating virtual image |
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| CN (1) | CN117270180A (en) |
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- 2022-06-14 CN CN202210664802.7A patent/CN117270180A/en active Pending
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