CN114545637B - Projection display device and vehicle with same - Google Patents
Projection display device and vehicle with same Download PDFInfo
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- CN114545637B CN114545637B CN202210420409.3A CN202210420409A CN114545637B CN 114545637 B CN114545637 B CN 114545637B CN 202210420409 A CN202210420409 A CN 202210420409A CN 114545637 B CN114545637 B CN 114545637B
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 46
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 238000009792 diffusion process Methods 0.000 claims description 22
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000010408 film Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Instrument Panels (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A projection display device and a vehicle with the same are provided, and the projection display device comprises a lamp source plate, a parabolic plano-convex lens module, a spherical biconvex lens, a liquid crystal display module and a reflecting mirror. The lamp source board is provided with a plurality of light sources, the parabolic plano-convex lens module is provided with a plurality of parabolic plano-convex lenses, and the planes of the parabolic plano-convex lenses face the light emitting sides of the light sources respectively. The spherical biconvex lens and the lamp source plate are respectively positioned on two opposite sides of the parabolic plano-convex lens module. The liquid crystal display module and the parabolic plano-convex lens module are respectively positioned on two opposite sides of the spherical biconvex lens. The light of the light source passes through the parabolic plano-convex lens, the spherical biconvex lens and the liquid crystal display module to form image light. The reflector is positioned on the light path of the image light, and reflects the image light to the transparent substrate, thereby generating a virtual image with high uniformity and high brightness.
Description
Technical Field
The present invention relates to a display technology, and more particularly, to a projection display apparatus and a vehicle having the same.
Background
The head-up display technology is a display technology commonly used on aircraft, and the meaning of head-up is that a pilot can see important information that he needs without lowering his head. Head-up displays were first presented on military aircraft, reducing the frequency with which pilots need to look down at the instrument, avoiding interruption of attention and loss of awareness of state (Situation Awareness). The head-up display can improve the safety of flight and the convenience of display, so that the head-up display is widely applied to civil aircraft. Vehicle head-up display systems are currently being developed widely at home and abroad, and environmental information around the vehicle is displayed through the vehicle head-up display systems, so that the safety performance of driving of the vehicle can be effectively improved.
The image generation unit (PGU, picture Generation Unit) acts as a means for providing images and light sources in the overall head-up display system. The PGU is provided with a thin film transistor liquid crystal display (TFT LCD) screen, so that various pictures can be output, more information of a driver is provided, and driving experience is improved. In addition, the backlight module provides a light source for the liquid crystal display screen, and the brightness and the uniformity of the picture brightness are mainly used as a main judging mechanism. The conventional PGU uses a direct type multiple led array to emit light because of high uniformity of the picture, and the overall power consumption is considerable although the uniformity is better, and the light use efficiency is low due to direct use of leds.
Accordingly, the present invention is directed to the above-mentioned problems, and provides a projection display device and a vehicle having the same, so as to solve the above-mentioned problems.
Disclosure of Invention
The invention provides a projection display device and a vehicle with the same, wherein the projection display device has a display picture effect with high uniformity and high brightness, and reduces a light emitting angle so as to prevent light from diffusing in a device and achieve the purpose of reducing stray light.
In order to achieve the above object, the present invention provides a projection display device, which comprises a lamp source plate, a parabolic plano-convex lens module, a spherical biconvex lens, a liquid crystal display module and at least one reflecting mirror. The lamp source board is provided with a plurality of light sources, and the parabolic plano-convex lens module is provided with a plurality of parabolic plano-convex lenses, wherein the planes of the parabolic plano-convex lenses face the light emitting sides of the light sources respectively. The spherical biconvex lens and the lamp source plate are respectively positioned on two opposite sides of the parabolic plano-convex lens module. The liquid crystal display module and the parabolic plano-convex lens module are respectively positioned on two opposite sides of the spherical biconvex lens. The light emitted by the light source sequentially passes through the parabolic plano-convex lens of the parabolic plano-convex lens module, the spherical biconvex lens and the liquid crystal display module to form image light. The reflector is positioned on the light path of the image light, wherein the reflector reflects the image light to a transparent substrate, thereby generating a virtual image.
In an embodiment of the invention, the projection display apparatus further includes a hollow column, a fixing member, a diffusion film, and a fixing fixture. The hollow cylinder is provided with a first opening and a second opening which are opposite to each other, wherein the parabolic plano-convex lens module is arranged in the hollow cylinder, the lamp source board is arranged on the hollow cylinder to shield the first opening, and the light source is arranged in the hollow cylinder. The fixing piece is provided with a third opening penetrating through the fixing piece, wherein the fixing piece is provided with a first side and a second side which are opposite to each other, the spherical double-convex lens is fixed on the first side of the fixing piece, and the spherical double-convex lens and the fixing piece are arranged in the hollow cylinder. The diffusion film is fixed on the second side of the fixing piece, wherein the spherical biconvex lens and the diffusion film shield the third opening. The fixing clamp is provided with a fourth opening penetrating through the fixing clamp, wherein the fixing clamp is fixed on the hollow cylinder to clamp the liquid crystal display module between the fixing clamp and the diffusion film, and the liquid crystal display module is exposed through the fourth opening. The light sequentially passes through the spherical biconvex lens, the third opening, the second opening, the diffusion film, the liquid crystal display module and the fourth opening to form image light.
In an embodiment of the invention, the projection display device further includes a base having a receiving recess, and the at least one reflector includes two reflectors, and the hollow cylinder and the two reflectors are both disposed in the receiving recess.
In one embodiment of the invention, the transparent substrate is a windshield of an automobile.
In an embodiment of the invention, the light source board further includes a printed circuit board, and the light source is disposed on the printed circuit board.
In one embodiment of the present invention, the horizontal axis and the vertical axis of the paraboloid plano-convex lens are both parabolic curves, and the radii of curvature of the horizontal axis and the vertical axis are different.
In an embodiment of the present invention, the vertical axis and the horizontal axis of the spherical surface of the spherical lenticular lens facing the liquid crystal display module are both spherical curves, and the vertical axis and the horizontal axis of the spherical surface of the spherical lenticular lens facing the parabolic plano-convex lens module are respectively spherical curves and straight lines.
In one embodiment of the invention, the liquid crystal display module is tilted with respect to the light source plate.
In one embodiment of the invention, the spherical lenticular lens is tilted with respect to the light source plate.
In an embodiment of the invention, the light source is a light emitting diode.
The invention further provides a vehicle, which comprises a vehicle main body and the projection display device, wherein the transparent substrate is a windshield arranged in a front frame of the vehicle main body and is used as a projection medium.
Based on the above, the projection display device utilizes the parabolic plano-convex lens module and the spherical biconvex lens to achieve the display picture effect of high uniformity and high brightness, and reduces the light-emitting angle so as to avoid light diffusion in the device, thereby reducing stray light.
Drawings
Fig. 1 is a schematic view of an embodiment of a projection display device of the present invention.
Fig. 2 is a top view showing the structure of an embodiment of a lamp panel, a parabolic plano-convex lens module, a spherical biconvex lens module and a liquid crystal display module according to the present invention.
Fig. 3 is a side view showing the structure of an embodiment of a lamp panel, a parabolic plano-convex lens module, a spherical biconvex lens and a liquid crystal display module according to the present invention.
Fig. 4 is an exploded view of an embodiment of a lamp panel, a parabolic plano-convex lens module, a hollow cylinder, a spherical biconvex lens, a fixture, a diffusion barrier, a liquid crystal display module and a fixture according to the present invention.
Fig. 5 is a perspective view showing a combined structure of a lamp panel, a parabolic plano-convex lens module, a hollow cylinder, a spherical biconvex lens, a fixing member, a diffusion film, a liquid crystal display module and a fixing clamp according to an embodiment of the invention.
Fig. 6 is a structural perspective view of an embodiment of the projection display device of the present invention.
Fig. 7 is a simulation graph of horizontal viewing angle versus vertical viewing angle according to the present invention.
FIG. 8 is a schematic view of an embodiment of a vehicle of the present invention.
Reference numerals:
1: projection display device 10: lamp source board
100: light source 101: printed circuit board with improved heat dissipation
11: parabolic plano-convex lens module 110: parabolic plano-convex lens
12: spherical biconvex lens 13: liquid crystal display module
14: mirror 15: hollow column
150: first opening 151: a second opening
16: fixing member 160: a third opening
17: diffusion film 18: fixing clamp
180: fourth opening 19: base seat
190: the accommodating groove 2: transparent substrate
3: vehicle 30 vehicle body
A. A': top edge B, B': side edge
Detailed Description
Embodiments of the present invention will be further illustrated by the following description in conjunction with the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts. In the drawings, the shape and thickness may be exaggerated for simplicity and convenience. It is to be understood that components not specifically shown in the drawings or described in the specification are in a form known to those of ordinary skill in the art. Many variations and modifications may be made by one of ordinary skill in the art in light of the disclosure herein.
When a component is referred to as being "on …," it can be broadly interpreted as referring to the component as being directly on the other component, or the other component can be present in both. Conversely, when one component is referred to as being "directly on" another component, it cannot have other components in between. As used herein, the term "and/or" includes any combination of one or more of the listed associated items.
The following description of "one embodiment" or "an embodiment" refers to a particular component, structure, or feature associated with at least one embodiment. Thus, the appearances of the phrase "one embodiment" or "an embodiment" in various places in the following are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, and characteristics of the embodiments may be combined in any suitable manner.
The disclosure is described with particular reference to the following examples, which are intended to be illustrative only, since it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure as defined in the following claims. Throughout the specification and claims, the meaning of "a" and "the" include that such recitation includes "one or at least one" of the elements or components unless the context clearly dictates otherwise. Furthermore, as used in this disclosure, the singular articles also include a recitation of a plurality of elements or components unless it is apparent from the specific context to the exclusion of a plurality. Moreover, as used in this description and throughout the claims that follow, the meaning of "in" may include "in" and "on" unless the context clearly dictates otherwise. The use of the words (terms) throughout the specification and claims is to be taken in a generic and descriptive sense only and not for purposes of limitation, the term having the ordinary meaning as used in the art and in the context of the disclosure herein. Certain terms used to describe the present disclosure are discussed below, or elsewhere in this specification, to provide additional guidance to the practitioner (practioner) in the description regarding the present disclosure. The use of examples anywhere throughout this specification including any examples of words discussed herein is illustrative only, and certainly not limiting of the scope and meaning of this disclosure or any exemplary words. Likewise, the disclosure is not limited to the various embodiments set forth in this specification.
It will be understood that the terms "include," "comprises," "including," "has," "contains," "containing," "includes," "having," "contains," "with" and the like, as used herein, are open-ended, i.e., are meant to include, but not be limited to. Furthermore, no single embodiment or claim of the invention is intended to achieve all of the objects, advantages or features disclosed herein. Furthermore, the abstract sections and headings are for use only in assisting patent document searches and are not intended to limit the scope of the claims which issue from this disclosure.
Unless specifically stated otherwise, some terms or words such as "can", "possible", "about", "may", "about", or "about" are generally intended to mean that the present embodiment has, but may also be construed as possibly unwanted features, elements, or steps. In other embodiments, these features, components, or steps may not be required.
A projection display apparatus will be described below that achieves a high uniformity and high brightness display screen effect using a parabolic plano-convex lens module and a spherical biconvex lens, and reduces the light extraction angle to avoid light diffusion within the device, thereby reducing stray light.
Fig. 1 is a schematic diagram of an embodiment of a projection display device according to the present invention, fig. 2 is a structural top view of an embodiment of a lamp source plate, a parabolic plano-convex lens module, a spherical biconvex lens and a liquid crystal display module according to the present invention, and fig. 3 is a structural side view of an embodiment of a lamp source plate, a parabolic plano-convex lens module, a spherical biconvex lens and a liquid crystal display module according to the present invention. Referring to fig. 1, 2 and 3, the projection display device 1 includes a lamp source board 10, a parabolic plano-convex lens module 11, a spherical biconvex lens 12, a liquid crystal display module 13 and at least one reflecting mirror 14. For convenience and clarity, a mirror 14 is exemplified herein. The lamp source board 10 has a plurality of light sources 100, the light sources 100 being for example, but not limited to, light emitting diodes. The parabolic plano-convex lens module 11 has a plurality of parabolic plano-convex lenses 110, wherein the planes of all the parabolic plano-convex lenses 110 face the light-emitting sides of all the light sources 100, respectively, and the paraboloids of the parabolic plano-convex lenses 110 face the spherical biconvex lenses 12. The spherical biconvex lens 12 and the lamp source plate 10 are located on opposite sides of the parabolic plano-convex lens module 11, respectively. The liquid crystal display module 13 and the parabolic plano-convex lens module 11 are respectively located on opposite sides of the spherical biconvex lens 12.
The light emitted from all the light sources 100 sequentially passes through all the parabolic plano-convex lenses 110 of the parabolic plano-convex lens module 11, the spherical biconvex lens 12 and the liquid crystal display module 13 to form image light. Because the reflecting mirror 14 is located in the optical path of the image light, the reflecting mirror 14 reflects the image light to a transparent substrate 2, thereby generating a virtual image. The transparent substrate 2 may be a windshield of an automobile, but the present invention is not limited thereto. The parabolic plano-convex lens module 11 and the spherical biconvex lens 12 are used for achieving high uniformity and high brightness display effect, and reducing the light emergent angle so as to prevent light from diffusing in the device, thereby reducing stray light.
In some embodiments of the present invention, the horizontal axis and the vertical axis of the paraboloid-shaped plano-convex lens 110 are both parabolic curves, and the radii of curvature of the horizontal axis and the vertical axis are different, so that the paraboloid-shaped plano-convex lens 110 can achieve the light source expansion effect more than an axisymmetric lens. For example, the radii of curvature of the horizontal and vertical axes of the parabola of the parabolic plano-convex lens 110 may be, but are not limited to, 2.5 millimeters (mm) and 4 millimeters, respectively. The refractive index of the parabolic plano-convex lens 110 may be, but is not limited to, 1.56-1.58. The vertical axis and the horizontal axis of the spherical surface of the spherical lenticular lens 12 facing the liquid crystal display module 13 may be both spherical curves, the vertical axis and the horizontal axis of the spherical surface of the spherical lenticular lens 12 facing the liquid crystal display module 13 may have different radii of curvature, and the vertical axis and the horizontal axis of the spherical surface of the spherical lenticular lens 12 facing the parabolic plano-convex lens module 11 may be a spherical curve and a straight line, respectively, so as to achieve the light source expansion effect. The radii of curvature of the vertical axis and the horizontal axis of the spherical surface of the spherical lenticular lens 12 facing the liquid crystal display module 13 may be, but not limited to, 100 mm and 20 mm, respectively, and the radius of curvature of the vertical axis of the spherical surface of the spherical lenticular lens 12 facing the parabolic plano-convex lens module 11 may be, but not limited to, 100 mm. The refractive index of the spherical lenticular lens 12 may be, but is not limited to, 1.56 to 1.58. Specifically, the light source board 10 may further include a printed circuit board 101, and all the light sources 100 are disposed on the printed circuit board 101. In order to effectively distribute the light sources 100 in the screen, the light sources 100 are non-equally spaced on the printed circuit board 101.
Fig. 4 is an exploded view of an embodiment of a lamp panel, a parabolic plano-convex lens module, a hollow cylinder, a spherical biconvex lens, a fixture, a diffusion barrier, a liquid crystal display module and a fixture according to the present invention. Fig. 5 is a perspective view showing a combined structure of a lamp panel, a parabolic plano-convex lens module, a hollow cylinder, a spherical biconvex lens, a fixing member, a diffusion film, a liquid crystal display module and a fixing clamp according to an embodiment of the invention. Referring to fig. 4 and 5, in some embodiments of the present invention, the projection display apparatus 1 may further include a hollow column 15, a fixing member 16, a diffusion film 17 and a fixing clamp 18. The hollow column 15 has a first opening 150 and a second opening 151 opposite to each other, wherein the parabolic plano-convex lens module 11 is disposed in the hollow column 15, the printed circuit board 101 of the lamp panel 10 is disposed on the hollow column 15 to cover the first opening 150, and all the light sources 100 are disposed in the hollow column 15. The fixing member 16 has a third opening 160 penetrating therethrough, wherein the fixing member 16 has a first side and a second side opposite to each other, the spherical lenticular lens 12 is fixed to the first side of the fixing member 16, and the spherical lenticular lens 12 and the fixing member 16 are disposed in the hollow cylinder 15. The diffusion film 17 may have a microstructure exhibiting an elliptical shape. The diffusion film 17 is fixed to the second side of the fixing member 16, wherein the spherical lenticular lens 12 and the diffusion film 17 shield the third opening 160. The mounting clip 18 has a fourth opening 180 therethrough. The fixing clamp 18 is fixed on the hollow column 15 to clamp the liquid crystal display module 13 between the fixing clamp 18 and the diffusion film 17, and exposes the liquid crystal display module 13 through the fourth opening 180. The light emitted from the light source 100 sequentially passes through the spherical biconvex lens 12, the third opening 160, the second opening 151, the diffusion film 17, the liquid crystal display module 13 and the fourth opening 180 to form image light. If the top side a of the printed circuit board 101 is defined as a horizontal side and the side B is a vertical side, the spherical lenticular lens 12 and the liquid crystal display module 13 are also defined as a horizontal side and the side B ' is a vertical side because the spherical lenticular lens 12 and the liquid crystal display module 13 also have the top side a ' and the side B ' which are perpendicular to each other. In order to prevent sunlight from penetrating the transparent substrate 2 and directly irradiating the liquid crystal display module 13, the liquid crystal display module 13 may be inclined with respect to the printed circuit board 101 of the lamp panel 10. Specifically, the horizontal side of the lcd module 13 may be inclined at 3.06 degrees with respect to the horizontal side of the pcb 101, and the vertical side of the lcd module 13 may be inclined at 22 degrees with respect to the vertical side of the pcb 101 to avoid the defocus phenomenon. In order to match the optical path design of the liquid crystal display module 13, the spherical lenticular lens 12 is tilted with respect to the printed circuit board 101 of the lamp source board 10. Specifically, the horizontal side of the spherical lenticular lens 12 may be inclined by 1 degree with respect to the horizontal side of the printed circuit board 101, and the vertical side of the spherical lenticular lens 12 may be inclined by 2 degrees with respect to the vertical side of the printed circuit board 101.
Fig. 6 is a structural perspective view of an embodiment of the projection display device of the present invention. Referring to fig. 4 and 6, the projection display apparatus 1 may further include a base 19, and two mirrors 14 may be used in the embodiment of fig. 6. The base 19 has a receiving recess 190, and the hollow column 15 and the reflecting mirror 14 are both disposed in the receiving recess 190. As can be seen from fig. 6, the printed circuit board 101 is further away from the sun light than the liquid crystal display module 13, which is indicated by an arrow. The sides of the liquid crystal display module 13 have two ends, one of which is close to the sunlight and the other is far away from the sunlight, wherein the shortest distance between the end close to the sunlight and the printed circuit board 101 is designed to be larger than the shortest distance between the end far away from the sunlight and the printed circuit board 101, so as to prevent the sunlight from penetrating through the transparent substrate 2 and directly irradiating the liquid crystal display module 13.
Fig. 7 is a simulation graph of horizontal viewing angle versus vertical viewing angle according to the present invention. Referring to fig. 7, when the number of light sources is four, the uniformity of the luminance is 74%, the average luminance of the screen at 3.86 watts is 1870000 nit (nit), and the light-emitting efficiency is 484000 lumens (Im)/watt. Further, when the vertical viewing angle is ±12.79 degrees, the corresponding picture has high luminance. When the horizontal viewing angle is ±30.57 degrees, the corresponding picture has high luminance.
FIG. 8 is a schematic view of an embodiment of a vehicle of the present invention. Referring to fig. 8 and 6, the projection display device of each of the foregoing embodiments can be applied to a vehicle 3, where the vehicle 3 includes a vehicle body 30 and the projection display device of any of the foregoing embodiments, and as shown in fig. 6, all components on a base 19 are disposed in the vehicle body 30, and a transparent substrate 2 is a windshield disposed in a front frame of the vehicle body 30 and is used as a projection medium.
According to the embodiment, the projection display device achieves a display screen effect with high uniformity and high brightness by using the parabolic plano-convex lens module and the spherical biconvex lens, and reduces the light emitting angle so as to prevent light from diffusing in the device, thereby reducing stray light.
The foregoing description of the preferred embodiment of the present invention is not intended to limit the scope of the present invention, but rather to cover all equivalent variations and modifications in shape, construction, characteristics and spirit according to the scope of the present invention as set forth in the following claims.
Claims (9)
1. A projection display device, comprising:
a lamp source board having a plurality of light sources;
a parabolic plano-convex lens module having a plurality of parabolic plano-convex lenses, wherein the planes of the parabolic plano-convex lenses respectively face the light-emitting sides of the light sources;
the spherical biconvex lens and the lamp source plate are respectively positioned at two opposite sides of the parabolic plano-convex lens module;
the liquid crystal display module and the parabolic plano-convex lens module are respectively positioned at two opposite sides of the spherical biconvex lens, wherein light rays emitted by the light source sequentially pass through the parabolic plano-convex lens, the spherical biconvex lens and the liquid crystal display module of the parabolic plano-convex lens module so as to form image light; wherein, the vertical axis and the horizontal axis of the spherical surface of the spherical double-convex lens facing the liquid crystal display module are both spherical curves, and the vertical axis and the horizontal axis of the spherical surface of the spherical double-convex lens facing the parabolic plane-convex lens module are respectively spherical curves and straight lines; and
and at least one reflecting mirror positioned on the optical path of the image light, wherein the at least one reflecting mirror reflects the image light to the transparent substrate, thereby generating a virtual image.
2. The projection display device of claim 1, further comprising:
the light source plate is arranged on the hollow cylinder so as to cover the first opening, and the light source is positioned in the hollow cylinder;
a fixing member having a third opening penetrating through itself, wherein the fixing member has a first side and a second side opposite to each other, the spherical lenticular lens is fixed to the first side of the fixing member, and the spherical lenticular lens and the fixing member are disposed in the hollow cylinder;
a diffusion film fixed to the second side of the fixture, wherein the spherical lenticular lens and the diffusion film shield the third opening; and
the fixing clamp is provided with a fourth opening penetrating through the fixing clamp, the fixing clamp is fixed on the hollow cylinder to clamp the liquid crystal display module between the fixing clamp and the diffusion film, the liquid crystal display module is exposed out of the fourth opening, and the light sequentially passes through the spherical biconvex lens, the third opening, the second opening, the diffusion film, the liquid crystal display module and the fourth opening to form image light.
3. The projection display device of claim 2, further comprising a base having a receiving recess, wherein the at least one mirror comprises two mirrors, and wherein the hollow cylinder and the two mirrors are both positioned in the receiving recess.
4. The projection display device of claim 1, wherein the transparent substrate is a windshield of an automobile.
5. The projection display device of claim 1, wherein the light source board further comprises a printed circuit board, the light source being disposed on the printed circuit board.
6. The projection display device of claim 1, wherein a horizontal axis and a vertical axis of a paraboloid of the parabolic plano-convex lens are both parabolic curves, and wherein a radius of curvature of the horizontal axis and the vertical axis is different.
7. The projection display device of claim 1, wherein the liquid crystal display module is tilted with respect to the light source plate.
8. The projection display device of claim 1, wherein the spherical lenticular lens is tilted with respect to the light source plate.
9. A vehicle, characterized by comprising
A vehicle body; and
the projection display device of any one of claims 1 to 8, provided in the vehicle body;
the transparent substrate is a windshield arranged in a front frame of the vehicle body and is used as a projection medium.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210420409.3A CN114545637B (en) | 2022-04-21 | 2022-04-21 | Projection display device and vehicle with same |
| TW111115622A TWI813267B (en) | 2022-04-21 | 2022-04-25 | Projection display apparatus and vehicle having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210420409.3A CN114545637B (en) | 2022-04-21 | 2022-04-21 | Projection display device and vehicle with same |
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| Publication Number | Publication Date |
|---|---|
| CN114545637A CN114545637A (en) | 2022-05-27 |
| CN114545637B true CN114545637B (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210420409.3A Active CN114545637B (en) | 2022-04-21 | 2022-04-21 | Projection display device and vehicle with same |
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| Country | Link |
|---|---|
| CN (1) | CN114545637B (en) |
| TW (1) | TWI813267B (en) |
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| JP2024084914A (en) * | 2022-12-14 | 2024-06-26 | 矢崎総業株式会社 | Display device for vehicle |
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| CN206321875U (en) * | 2016-10-25 | 2017-07-11 | 创扬通信技术（深圳）有限公司 | The VR/MR optical systems and VR/MR equipment of dual element convex-concave eyeglass |
| CN109407301B (en) * | 2018-11-30 | 2021-06-15 | 重庆爱奇艺智能科技有限公司 | Eyepiece and head-mounted equipment |
| CN111552085B (en) * | 2020-06-24 | 2023-03-28 | 业成科技（成都）有限公司 | Head-up display device and manufacturing process thereof |
| CN114296220A (en) * | 2021-12-31 | 2022-04-08 | 青岛海信激光显示股份有限公司 | Projection lens and projection system |
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- 2022-04-21 CN CN202210420409.3A patent/CN114545637B/en active Active
- 2022-04-25 TW TW111115622A patent/TWI813267B/en active
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| JP2006220809A (en) * | 2005-02-09 | 2006-08-24 | Canon Inc | Projection lens and projector using the same |
| CN207586520U (en) * | 2017-12-28 | 2018-07-06 | 陆战军 | Move DV optical lens |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI813267B (en) | 2023-08-21 |
| TW202343106A (en) | 2023-11-01 |
| CN114545637A (en) | 2022-05-27 |
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