CN112731667A - Projection device and projection method - Google Patents
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- CN112731667A CN112731667A CN202110008583.2A CN202110008583A CN112731667A CN 112731667 A CN112731667 A CN 112731667A CN 202110008583 A CN202110008583 A CN 202110008583A CN 112731667 A CN112731667 A CN 112731667A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/013—Head-up displays characterised by optical features comprising a combiner of particular shape, e.g. curvature
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Abstract
A projection device includes a display, a plurality of optical elements, and a translucent medium. The display is provided with a light-emitting convex cambered surface, and the display generates a picture and projects a first light ray corresponding to the picture through the light-emitting convex cambered surface. The plurality of optical components are used for reflecting the first light ray in sequence to generate a second light ray. The second light is projected onto the translucent medium to produce an image corresponding to the picture. Thus, the projection device can project projection imaging with small distortion and excellent quality according to the picture of the display.
Description
Technical Field
The present invention relates to a projection apparatus and a projection method, and more particularly, to a projection apparatus and a projection method for a head-up display (head-up display) system.
Background
The translation of augmented Reality corresponding to Virtual Reality (VR) is called real Virtual Reality or augmented Reality, and refers to a technology that combines and interacts a Virtual world on a screen with a real world scene by performing position and angle calculations on an image of a camera and adding an image analysis technology. This technique was proposed in 1990. With the improvement of the computing power of portable electronic products, the application of the augmented reality is more and more extensive.
Augmented reality is closely related to hardware, software, and application level. In terms of hardware, the carrier combined with the processor, display, sensor and input device can be suitable for being used as an augmented reality platform. In software, the main key of augmented reality systems is how to integrate augmented objects with the real world. On the application level, the medicine is used for military affairs at first and is expanded to daily life later.
However, in practical applications, image projection may be limited by real world space. In addition, the image may also be subjected to the projected position and the rear projection, causing unnecessary distortion of the image, which in turn makes the image difficult to recognize.
Therefore, a great number of private enterprises or related research and development units have invested a lot of money, manpower and time to research the projection device, and there is a strong desire to improve the related problems still to be solved by the present projection device.
Disclosure of Invention
Accordingly, an objective of the present invention is to provide a projection apparatus including a display, a plurality of optical elements and a translucent medium. The display is provided with a light-emitting convex cambered surface, and the display generates a picture and projects a first light ray corresponding to the picture through the light-emitting convex cambered surface. The plurality of optical components are used for reflecting the first light ray in sequence to generate a second light ray. The second light is projected onto the translucent medium to produce an image corresponding to the picture.
In one or more embodiments of the invention, the display comprises a convex lens, the exit convex curve being the convex surface of the convex lens.
In one or more embodiments of the present invention, the display is a curved display, and the light-emitting convex curved surface is a light-emitting surface of the curved display.
In one or more embodiments of the invention, the light-exiting convex curved surface has a curvature between 1500R and 4000R.
In one or more embodiments of the present invention, the plurality of optical elements includes a first optical element and a second optical element, the first optical element includes a reflective convex surface, the second optical element includes a reflective concave surface, and the first light is projected onto the reflective convex surface and then reflected onto the reflective concave surface.
In one or more embodiments of the present invention, the plurality of optical elements includes a first optical element and a second optical element, the first optical element includes a reflective concave surface, the second optical element includes a reflective convex surface, and the first light is projected onto the reflective concave surface and then reflected onto the reflective convex surface.
In one or more embodiments of the present invention, the second light is generated by a secondary reflection of the first optical element and the second optical element.
Another aspect of the present invention is to provide a projection method for solving the above problems, which includes generating a picture on a display and projecting a first light corresponding to the picture through a light-emitting convex arc surface of the display; the plurality of optical components sequentially reflect the first light to generate a second light; and enabling the second light to be projected to the semitransparent medium, and further generating an image corresponding to the picture.
In one or more embodiments of the invention, wherein the display comprises a convex lens, the exit convex curve is the convex surface of the convex lens.
In one or more embodiments of the present invention, the display is a curved display, and the light-emitting convex curved surface is a light-emitting surface of the curved display.
In one or more embodiments of the present invention, the light-exiting convex arc surface has a curvature between 1500R and 4000R.
In one or more embodiments of the present invention, the plurality of optical elements includes a first optical element and a second optical element, the first optical element includes a reflective convex surface, the second optical element includes a reflective concave surface, and the first light is projected to the reflective convex surface and reflected to the reflective concave surface.
In one or more embodiments of the present invention, the plurality of optical elements includes a first optical element and a second optical element, the first optical element includes a reflective concave surface, the second optical element includes a reflective convex surface, and the first light is projected to the reflective concave surface and reflected to the reflective convex surface.
In one or more embodiments of the present invention, the second light is generated by a secondary reflection of the convex mirror and the concave mirror.
In summary, the projection apparatus of the present invention utilizes the design of the light-emitting convex arc surface to generate the virtual image with excellent quality from the translucent medium, wherein the distortion of the virtual image is less than or equal to 4.2%, and thus the projection apparatus of the present invention has an excellent projection function. In addition, the projection device of the invention comprises a reflection concave surface and a reflection convex surface for reflecting the first light, and the reflection concave surface and the reflection convex surface generate images through secondary reflection, and the projection device has the advantages of small volume and suitability for being placed in a narrow space (such as a driver seat area of an automobile) due to the low reflection times and less required optical reflection elements.
The foregoing is merely illustrative of the problems, solutions to problems, and other aspects of the present invention, and the specific details thereof are set forth in the following description and the related drawings.
Drawings
To the accomplishment of the foregoing and related ends, the principles briefly described above will be explained in more detail with reference to embodiments, illustrated in the accompanying drawings. The drawings are only for purposes of illustrating the invention and are not to be construed as limiting the scope of the invention. The principles of the present invention will be clearly explained with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a projection device according to one or more embodiments of the invention;
FIG. 2 is a schematic side view of a projection device according to one or more embodiments of the invention;
FIG. 3 shows a schematic side view of a projection device according to one or more embodiments of the invention;
FIG. 4 illustrates a view of a virtual image produced by a projection device in accordance with one or more embodiments of the present invention; and
FIG. 5 is a flow diagram illustrating method steps of a projection method according to one or more embodiments of the invention.
Reference numerals:
100 projection device 110 display
111 convex lens 112 emergent convex cambered surface
120 optical component 120a first optical component
120b second optical component 130 translucent medium
200 projection method 210,230,250 step
I picture L1 first light ray
L2 second ray M virtual imaging
P is the user
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, for simplicity, some conventional structures and elements are shown in the drawings in a simplified schematic manner.
An augmented reality head-up display (AR-HUD) system may be used to provide various information for providing AR-HUD user security and convenience. During transport, information related to the operation of a vehicle (e.g., a fuel or electric vehicle), such as a vehicle meter or navigation image, may be projected as a virtual image to a viewing area of the windshield in front of the driver, for example. It is believed that the use and related applications of such AR-HUD systems will necessarily increase year by year as the functions of the vehicle become more complex.
Please refer to fig. 1. Fig. 1 is a schematic diagram of a projection apparatus 100. The projection device 100 includes a display 110, a plurality of optical elements 120, and a translucent medium 130. The display 110 has an exit convex arc surface 112, and the display 110 generates a frame I and projects a divergent first light L1 through the exit convex arc surface 112, wherein the first light L1 is generated corresponding to the frame I. Then, the plurality of optical elements 120 are used for sequentially reflecting the first light L1 and generating a second light L2, and the second light L2 is projected onto the translucent medium 130, thereby generating the virtual image M. The first light L1 is display light generated by the display 110 displaying the picture I, and the first light L1 is reflected several times to generate the reflected light of the second light L2. The projection apparatus 100 can generate the virtual image M with small distortion and high reality by using the design of the light-emitting convex arc surface 112, so that the user P can conveniently view the virtual image M with high fusion degree with the surrounding environment.
Specifically, the projection apparatus 100 of the present invention may be a virtual reality head-up display apparatus, wherein the projection apparatus 100 may be installed in a vehicle (e.g., a fuel car or an electric car) driven by the user P, and the translucent medium 130 is, for example, a windshield installed on the vehicle, so that the user P can view the generated virtual image M on the translucent medium 130. In some embodiments of the present invention, the translucent medium 130 includes two layers of tempered glass and a plastic interlayer, wherein the plastic interlayer is sandwiched between the two layers of tempered glass, and a thin film can be attached on the surface of the tempered glass according to the actual use requirement, so that the reflectivity of the translucent medium 130 is high and is suitable for generating the virtual image M. In addition, the virtual imagery M may include image information or text information, such as vehicle speed information, fuel information, climate information, entertainment news information, turn navigation instruction information, time information, traffic information, or warning information. The virtual image M may be represented by words, symbols, images, and may be represented by one or more colors, which is not limited by the invention.
In addition, the display 110 may include a cathode ray tube (CTR) display, a light-emitting diode (LED) display, an organic light-emitting diode (OLED) display, a Liquid Crystal Display (LCD), a laser projection system, or other types of displays known to those skilled in the art, but the invention is not limited thereto.
In one or more embodiments of the invention, the display 110 includes a convex lens 111, and the light-exiting convex curved surface 112 is a convex surface of the convex lens 111. Specifically, the convex lens 111 is a single-sided convex lens and has a convex surface and a flat surface corresponding to each other, and the flat surface of the convex lens 111 is disposed on the light-emitting surface of the display 110. For example, the flat surface of the convex lens 111 is fixed on the light-emitting surface of the display panel of the display 110, and the convex surface of the convex lens 111 is farther away from the light-emitting surface of the display 110 than the flat surface of the convex lens 111. Accordingly, the convex lens 111 can affect the first light L1 emitted from the display 110, so that the first light L1 has a divergent traveling path, thereby effectively reducing the distortion of the virtual image M and obtaining a good quality virtual image M, but the invention is not limited thereto.
In one or more embodiments of the present invention, the display 110 is a curved display, and the light-exiting convex curved surface 112 is a light-exiting surface of the curved display, so that the first light L1 generated by the display 110 has a more divergent traveling path, thereby improving the distortion of the virtual image M. Specifically, the light-emitting convex arc surface 112 of the display 110 has a curvature between 1500R and 4000R. In some embodiments of the invention, the curvature of the exit convex curved surface 112 is between 1800R to 3000R, for example, the curvature of the exit convex curved surface 112 is 1800R or 3000R, but the invention is not limited thereto.
In one or more embodiments of the present invention, the plurality of optical elements 120 of the display 110 includes a first optical element 120a and a second optical element 120b, and the first optical element 120a and the second optical element 120b may include a reflective convex surface, a reflective concave surface, or a reflective flat surface, so that the first optical element 120a and the second optical element 120b may be a convex mirror, a concave mirror, or a flat mirror, but the present invention is not limited thereto. For example, the first optical element 120a and the second optical element 120b may include a convex structure, a concave structure, or a planar structure, and have a metal film or an alloy film with high reflectivity on the surface thereof. The first optical element 120a and the second optical element 120b shown in fig. 1 are only for illustrative purposes, and fig. 1 is not intended to limit the form, type, or relative relationship between the first optical element 120a and the second optical element 120 b.
Referring to fig. 1 and fig. 2, fig. 2 is a schematic side view of the projection apparatus 100. In one or more embodiments of the present invention, the first optical element 120a of the projection apparatus 100 includes a reflective convex surface, and the second optical element 120b of the projection apparatus 100 includes a reflective concave surface, and the first light L1 generated by the display 110 is projected to the first optical element 120a and reflected to the second optical element 120b, so as to generate the reflected light of the second light L2. In the present embodiment, the first light L1 is projected to the convex reflection surface and reflected to the concave reflection surface, and then reflected by the concave reflection surface to generate the second light L2, so that the second light L2 is projected to the translucent medium 130 and generates the virtual image M with small distortion and excellent image quality for the user P to view when operating the vehicle.
Referring to fig. 1 and fig. 3, fig. 3 is a schematic side view of the projection apparatus 100. In one or more embodiments of the invention, the first optical element 120a of the projection apparatus 100 includes a concave reflective surface, and the second optical element 120b of the projection apparatus 100 includes a convex reflective surface, and the first light L1 generated corresponding to the image I of the display 110 is projected onto the first optical element 120a and reflected onto the second optical element 120b, so as to generate the reflected light of the second light L2. In the present embodiment, the first light L1 is projected to the concave reflection surface, then reflected to the convex reflection surface, and then reflected by the convex reflection surface to generate the second light L2, so that the second light L2 is projected to the translucent medium 130 to generate the virtual image M with small distortion and excellent image quality for the user P to view when operating the vehicle.
In one or more embodiments of the present invention, the second light L2 is generated by the second reflection of the first optical element 120a and the second optical element 120 b. In other words, in the process of sequentially reflecting the first light L1 by the plurality of optical elements 120 and generating the second light L2, the traveling path and the reflection direction of the first light L1 are not adjusted by other optical reflection elements except the first optical element 120a and the second optical element 120b, so that the virtual image M can be generated only by the first optical element 120a and the second optical element 120b, and the projection apparatus 100 can be installed in a driver's seat of a vehicle with a small space.
Referring to fig. 4, fig. 4 shows a field of view (FOV) diagram of a virtual image M generated by the projection apparatus 100 according to one or more embodiments of the present invention. Wherein the horizontal axis of fig. 4 represents a horizontal field of view (horizontal FOV) and the vertical axis of fig. 4 represents a vertical field of view (vertical FOV). As can be seen from fig. 4, the distortion amount of the virtual image M is quite small, wherein the distortion amount of the virtual image M is less than or equal to 4.2%. In a preferred case, the distortion amount of the virtual image M is greater than or equal to 0 and less than or equal to 4.12%. Therefore, the projection apparatus 100 can generate a high-quality virtual image M for the user P to view.
Referring to fig. 5, fig. 5 is a flowchart illustrating method steps of a projection method 200 according to one or more embodiments of the invention. The projection method 200 starts at step 210, where step 210 includes enabling the display to generate a picture and projecting a first light corresponding to the picture through an emergent convex curved surface of the display. Then, the projection method 200 proceeds to step 230, where step 230 includes sequentially reflecting the first light beam and generating the second light beam by the plurality of optical elements. Next, the projection method 200 proceeds to step 250, where step 250 includes causing a second light to be projected onto the translucent medium, thereby generating an image corresponding to the frame. Specifically, the projection method 200 may be implemented in conjunction with the projection apparatus 100, and therefore, some details regarding the communication between the projection apparatus 100 and the projection method 200 have been disclosed in the previous paragraphs of the present disclosure, and modifications and substitutions can be made by those skilled in the art according to the disclosure of the present disclosure, so that repeated descriptions regarding the projection apparatus 100 will not be repeated herein.
Referring to fig. 1 and fig. 5, in step 210, the display 110 generates a frame I and projects a first light L1 corresponding to the frame I through the light-exiting convex arc surface 112 of the display 110, wherein the display 110 includes a convex lens 111, and the light-exiting convex arc surface 112 is a convex arc surface of the convex lens 111. Through the arrangement of the convex lens 111, the display 110 can generate the divergent first light L1 by using the light-exiting convex arc surface 112, but the invention is not limited thereto.
In other embodiments of the present invention, the display 110 is a curved display, and the light-exiting convex arc surface 112 is a light-exiting surface of the curved display to generate the divergent first light L1. Specifically, the light-emitting convex arc surface 112 of the curved display has a curvature between 1500R and 4000R. The curvature of the exit convex curved surface 112 may also be between 1800R to 3000R, for example, the curvature of the exit convex curved surface 112 is 1800R or 3000R, which is not limited in the invention.
In step 230, the plurality of optical elements 120 are sequentially made to reflect the first light L1 and generate a second light L2, wherein the plurality of optical elements 120 include a first optical element 120a and a second optical element 120b, the first optical element 120a includes a reflective convex surface, and the second optical element 120b includes a concave surface. Therefore, the first light L1 is projected to the convex reflection surface and reflected to the concave reflection surface, and then reflected by the concave reflection surface to generate the second light L2, but the invention is not limited thereto.
In other embodiments of the present invention, the first optical assembly 120a includes a reflective concave surface and the second optical assembly 120b includes a reflective convex surface. Therefore, the first light L1 is projected to the concave reflection surface, reflected to the convex reflection surface via the concave reflection surface, and further generates the second light L2 via the convex reflection surface, but the invention is not limited thereto.
In other embodiments of the present invention, the second light L2 is generated by two reflections, so the second light L2 is generated by sequentially reflecting the first optical element 120a and the second optical element 120b, i.e., the second light L2 is generated only by the first optical element 120a and the second optical element 120b without further matching with other optical reflection elements. Therefore, the projection method 200 implemented by the projection apparatus 100 and the secondary reflection together occupy a small space, so that the projection method 200 can be implemented in a driver's seat with a small space.
In step 250, a second light L2 is projected onto the translucent medium 130 to generate a virtual image M corresponding to the frame I for the user P to view. In one or more embodiments of the present invention, the amount of distortion of the virtual imaging M is less than or equal to 4.2%. In a preferred case, the distortion amount of the virtual imaging M is greater than or equal to 0 and less than or equal to 4.12%. In addition, the translucent medium 130 may be a windshield, which includes two layers of tempered glass and a plastic interlayer, wherein the plastic interlayer is sandwiched between the two layers of tempered glass, and a thin film is attached to the surface of the tempered glass according to the actual use requirement, so that the reflectivity of the translucent medium 130 is high and is suitable for generating the virtual image M with excellent image quality.
In summary, the projection apparatus of the present invention utilizes the design of the light-emitting convex arc surface to generate the virtual image with excellent quality from the translucent medium, wherein the distortion of the virtual image is less than or equal to 4.2%, and thus the projection apparatus of the present invention has an excellent projection function. In addition, the projection device of the invention comprises a reflection concave surface and a reflection convex surface for reflecting the first light, and the reflection concave surface and the reflection convex surface generate images through secondary reflection, and the projection device has the advantages of small volume and suitability for being placed in a narrow space (such as a driver seat area of an automobile) due to the low reflection times and less required optical reflection elements.
While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. Many modifications may be made to the disclosed embodiments in light of the disclosure herein without departing from the spirit and scope of the invention. Thus, the breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments.
Claims (14)
1. A projection device, comprising:
the display is provided with a light-emitting convex cambered surface, generates a picture and projects first light rays corresponding to the picture through the light-emitting convex cambered surface;
the plurality of optical components are used for reflecting the first light rays in sequence to generate second light rays; and
a translucent medium to which the second light is projected to produce an image corresponding to the picture.
2. The projection device of claim 1, wherein the display includes a convex lens, and the emergent convex curved surface is a convex surface of the convex lens.
3. The projection apparatus as claimed in claim 1, wherein the display is a curved display, and the light-exiting convex curved surface is a light-exiting surface of the curved display.
4. The projection device of claim 3, wherein the exit convex curved surface has a curvature between 1500R and 4000R.
5. The projection apparatus as claimed in claim 1, wherein the optical element includes a first optical element and a second optical element, the first optical element includes a convex reflective surface, the second optical element includes a concave reflective surface, and the first light is projected onto the convex reflective surface and then reflected onto the concave reflective surface.
6. The projection apparatus as claimed in claim 1, wherein the optical element includes a first optical element and a second optical element, the first optical element includes a reflective concave surface, the second optical element includes a reflective convex surface, and the first light is projected onto the reflective concave surface and then reflected onto the reflective convex surface.
7. The projection apparatus according to claim 5 or 6, wherein the second light is generated by a secondary reflection of the first optical element and the second optical element.
8. A method of projection, comprising:
enabling a display to generate a picture and projecting first light rays corresponding to the picture through a light-emitting convex cambered surface of the display;
enabling the plurality of optical components to sequentially reflect the first light to generate a second light; and
and enabling the second light to be projected to a semitransparent medium, and further generating an image corresponding to the picture.
9. The projection method of claim 8, wherein the display comprises a convex lens, and the emergent convex curved surface is a convex surface of the convex lens.
10. The projection method of claim 8, wherein the display is a curved display, and the light-exiting convex curved surface is a light-exiting surface of the curved display.
11. The projection method of claim 10, wherein the exit convex curved surface has a curvature between 1500R and 4000R.
12. The projection method of claim 8, wherein the optical elements comprise a first optical element and a second optical element, the first optical element comprising a convex reflective surface and the second optical element comprising a concave reflective surface, the first light being projected onto the convex reflective surface and reflected onto the concave reflective surface.
13. The projection method of claim 8, wherein the optical assembly comprises a first optical assembly and a second optical assembly, the first optical assembly comprises a concave reflective surface, the second optical assembly comprises a convex reflective surface, and the first light is projected onto the concave reflective surface and reflected onto the convex reflective surface.
14. The projection method of claim 13 or 14, wherein the second light is generated by secondary reflections from the first optical element and the second optical element.
Priority Applications (2)
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|---|---|---|---|
| CN202110008583.2A CN112731667A (en) | 2021-01-05 | 2021-01-05 | Projection device and projection method |
| TW110140619A TWI790800B (en) | 2021-01-05 | 2021-11-01 | Projection device and projection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110008583.2A CN112731667A (en) | 2021-01-05 | 2021-01-05 | Projection device and projection method |
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| CN112731667A true CN112731667A (en) | 2021-04-30 |
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| CN202110008583.2A Pending CN112731667A (en) | 2021-01-05 | 2021-01-05 | Projection device and projection method |
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| TW (1) | TWI790800B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113296342A (en) * | 2021-05-21 | 2021-08-24 | 光感(上海)科技有限公司 | Optical projection system |
| WO2024022322A1 (en) * | 2022-07-28 | 2024-02-01 | 未来（北京）黑科技有限公司 | Display apparatus, image source apparatus, traffic device and display method |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI790800B (en) | 2023-01-21 |
| TW202227876A (en) | 2022-07-16 |
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