CN109932819B - Head-up display - Google Patents
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- CN109932819B CN109932819B CN201711362136.7A CN201711362136A CN109932819B CN 109932819 B CN109932819 B CN 109932819B CN 201711362136 A CN201711362136 A CN 201711362136A CN 109932819 B CN109932819 B CN 109932819B
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- 230000003287 optical effect Effects 0.000 claims description 19
- 238000003384 imaging method Methods 0.000 claims description 7
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- 238000009434 installation Methods 0.000 abstract description 6
- 208000003464 asthenopia Diseases 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
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- 239000000446 fuel Substances 0.000 description 1
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Abstract
The invention is suitable for the technical field of vehicle-mounted equipment, and provides a head-up display, which comprises a first image source, a second image source, a plane mirror and a concave mirror, wherein the plane mirror is movably arranged between the first image source and the concave mirror, the reflecting surface of the plane mirror faces to the concave mirror, the second image source is arranged on one side of the plane mirror, which faces to the concave mirror, light emitted by the second image source is reflected to the concave mirror through the plane mirror, and the concave mirror reflects light emitted by the first image source and light emitted by the second image source reflected by the plane mirror to a windshield of an automobile in a time-sharing way and images at different distances through the windshield. The head-up display enables the first image source and the second image source to be imaged at different distances in front of the windshield in a time-sharing mode, can well fuse images on a better vision distance of a driver, avoids visual fatigue, and improves driving safety. The second light of the second image source is folded and transmitted, so that the whole machine volume is reduced, and the adaptability to the installation space is better.
Description
Technical Field
The invention belongs to the technical field of vehicle-mounted equipment, and particularly relates to a head-up display.
Background
It is known that a head-up display is usually installed in an automobile, and the purpose of the head-up display is to allow a driver to concentrate on driving without looking down at dashboard information, and to obtain desired information from a virtual image formed by the head-up display and located in front of the field of view, thereby avoiding the problem of driving safety caused by the eye focusing on the dashboard during driving of the automobile. Generally, the head-up display can display the traditional vehicle speed, fuel consumption and temperature, and can also display the augmented reality information of road conditions, such as lane departure, pedestrian identification, roadblock identification and the like. However, as the speed of the driving vehicle varies, the distance between the front view of the vehicle which can be observed by the human eye varies, so in order to exert the purpose that the head-up display can see the relevant driving information to a greater extent without lowering the head, it is necessary to project the information of the head-up display into the front road view of the vehicle which can be seen by the driver, so that the virtual image of the head-up display and the view focused by the human eye are effectively fused, and the eye fatigue caused by intentional zooming is avoided, and therefore, the projection distance of the head-up display needs to be changed.
In the prior art, a head-up display capable of realizing different distance display is mentioned, a piece of expanded reflecting mirror with two reflecting areas is used for respectively imaging an image source, the size of a lens is increased, the mold opening injection molding cost of the lens is greatly increased, in addition, the lens is increased, the yield is also greatly reduced in the injection molding process, and the mass production of products is inconvenient; and because of the widening of the lenses, the volume of the head-up display is greatly increased, and the head-up display is inconvenient to widely apply and install in the automobile.
Disclosure of Invention
The invention aims to provide a head-up display, which aims to solve the technical problems of large size, low yield and poor adaptability to installation space of the traditional head-up display with a changeable imaging distance.
The invention discloses a head-up display which is realized in such a way that the head-up display is arranged in an automobile and comprises a first image source, a second image source, a plane reflecting mirror and a concave reflecting mirror, wherein the plane reflecting mirror is movably arranged between the first image source and the concave reflecting mirror, the reflecting surface of the plane reflecting mirror faces to the concave reflecting mirror, the second image source is arranged on one side of the plane reflecting mirror, which faces to the concave reflecting mirror, light emitted by the second image source is reflected to the concave reflecting mirror through the plane reflecting mirror, and the concave reflecting mirror reflects first light emitted by the first image source and second light emitted by the second image source, which is reflected by the plane reflecting mirror, to the windshield of the automobile in a time sharing way, and images at different distances through the windshield.
Further, the first image source and the second image source are projectors for displaying dashboard information of the automobile.
Further, the first image source and the second image source are provided with map software, and the images output by the first image source and the second image source further comprise driving environment information.
Further, the center line of the first light ray emitted by the first image source and the center line of the second light ray emitted by the second image source are symmetrical with respect to the plane mirror.
Further, an optical path between the first image source and the concave mirror is different from an optical path between the second image source and the concave mirror.
Further, the head-up display further comprises a first moving device, wherein the first moving device is connected with the plane reflecting mirror and used for moving the plane reflecting mirror out of or into between the concave reflecting mirror and the first image source.
Further, the head-up display further comprises a lens switching device and a light-transmitting mirror, wherein the light-transmitting mirror and the plane reflecting mirror are connected with the lens switching device, and the lens switching device is used for switching the light-transmitting mirror and the plane reflecting mirror between the first image source and the concave reflecting mirror in a time-sharing mode.
Further, the head-up display further comprises an image source switching device, wherein the image source switching device is used for switching on the first image source and the second image source in a time-sharing mode, and the plane reflecting mirror is a half-reflecting half-lens.
Further, the head-up display further comprises a control device connected with the speed measuring device of the automobile, and the control device is used for controlling the first light rays emitted by the first image source to be incident on the concave reflecting mirror or controlling the second light rays emitted by the second image source to be incident on the concave reflecting mirror in real time according to the automobile speed;
the control device is connected with the mobile device;
Or the control device is connected with the lens switching device;
Or the control device is connected with the image source switching device.
Further, the head-up display further comprises a second moving device connected with the concave reflecting mirror.
The head-up display provided by the invention has the following beneficial effects:
The head-up display comprises a first image source, a second image source, a plane reflecting mirror and a concave reflecting mirror, wherein the plane reflecting mirror is moved in or out between the first image source and the concave reflecting mirror, so that the first image source and the second image source can be imaged at different distances in front of a windshield in a time-sharing mode, and further images can be fused on the preferred vision distance of a driver well in different driving modes, visual fatigue caused by overlarge phase difference between the images and the vision distance is avoided, and driving safety is further improved. In addition, the first image source and the second image source are respectively arranged on two sides of the plane reflecting mirror, and the second image source is arranged on one side of the plane reflecting mirror, which faces the concave reflecting mirror, so that second light rays of the second image source are folded and transmitted, the whole size is further reduced, the device can be used in automobiles with narrow installation space, and the device has better adaptability to the installation space. In addition, the concave reflector has high utilization rate, does not need to increase the area, and further can reduce the cost and has high product yield.
Drawings
FIG. 1 is a schematic diagram of a head-up display according to an embodiment of the present invention;
Fig. 2 is a schematic diagram of a lens switching device of a head-up display according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another structure of a head-up display according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper," "lower," "left," "right," and the like are used for convenience of description based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present patent. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
In order to explain the technical scheme of the invention, the following is a detailed description with reference to the specific drawings and embodiments.
Referring to fig. 1, an embodiment of the present invention provides a head-up display for being installed in an automobile, so that a driver can focus on driving without looking down at dashboard information. The head-up display comprises a first image source 10, a second image source 20, a plane mirror 30 and a concave mirror 40, wherein the plane mirror 30 is movably arranged between the first image source 10 and the concave mirror 40, the reflecting surface of the plane mirror 30 faces the concave mirror 40, the second image source 20 is arranged at one side of the plane mirror 30, which faces the concave mirror 40, and light emitted by the second image source 20 is reflected to the concave mirror 40 through the plane mirror 30, and the concave mirror 40 reflects first light emitted by the first image source 10 and second light emitted by the second image source 20 reflected by the plane mirror 30 to a windshield 50 of an automobile in a time-sharing manner, and images at different distances through the windshield 50.
Specifically, the first image source 10 and the second image source 20 are both used for displaying dashboard information, and the information images are projected to the concave mirror 40 directly or through the plane mirror 30, and the first image source 10 and the second image source 20 may be projectors for projecting dashboard information of the automobile, where the dashboard information may be, but is not limited to, acquired from an OBD interface of the automobile. The plane mirror 30 is movably disposed between the first image source 10 and the concave mirror 40, that is, when information of the first image source 10 needs to be displayed, the plane mirror 30 moves out of the optical path, so as to avoid shielding the first light of the first image source 10, and meanwhile, the second light of the second image source 20 cannot be reflected, and at this time, a virtual image corresponding to the first light is formed by the windshield 50. When the information of the second image source 20 needs to be displayed, the plane mirror 30 is moved into the optical path to block the first light and reflect the second light, and at this time, a virtual image corresponding to the second light is formed by the windshield 50, and the distances between the two virtual images and the windshield 50 are different, so as to adapt to different driving modes, such as high-speed driving or low-speed driving.
The head-up display provided by the embodiment has the following technical effects:
The head-up display comprises a first image source 10, a second image source 20, a plane mirror 30 and a concave mirror 40, wherein the plane mirror 30 is moved in or out between the first image source 10 and the concave mirror 40, so that the first image source 10 and the second image source 20 can be imaged at different distances in front of a windshield 50 in a time-sharing manner, and further, when in different driving modes, images can be well fused on a better vision distance of a driver, and visual fatigue caused by overlarge phase difference between the images and the vision distance is avoided, so that driving safety is improved. In addition, the first image source 10 and the second image source 20 are respectively arranged at two sides of the plane mirror 30, and the second image source 20 is arranged at one side of the plane mirror 30 facing the concave mirror 40, so that the second light of the second image source 20 is folded and transmitted, the whole volume is further reduced, the device can be used in an automobile with a small installation space, and the device has better adaptability to the installation space. In addition, the concave reflector has high utilization rate, does not need to increase the area, and further can reduce the cost and has high product yield.
Further, the first image source 10 and the second image source 20 may further be provided with map software, and the images output by the first image source 10 and the second image source 20 include driving environment information, such as road marks, pedestrian marks, roadblock recognition, and the like, besides dashboard information, so as to further improve safety.
Further, in order to effectively compress the optical path and control the imaging position, the center line of the first light beam emitted by the first image source 10 and the center line of the second light beam emitted by the second image source 20 are symmetrical with respect to the plane mirror 30, so that the first light beam and the second light beam can be transmitted in the same path between the plane mirror 30 and the concave mirror 40, the incident optical path and the reflected optical path of the concave mirror 40 are kept stable, the incident position on the windshield 50 is kept consistent, and the high and low positions of the two virtual images are kept stable. It will be appreciated that the unequal optical paths between the first image source 10 and the concave mirror 40 and the second image source 20 and the concave mirror 40, and the unequal virtual image distances formed by the windshield 50, are an effective and easy means of controlling the virtual image distances. In addition, since the optical path between the second image source 20 and the concave mirror 40 is folded, the optical path between the first image source 10 and the concave mirror 40 is preferably smaller than the optical path between the second image source 20 and the concave mirror 40 to save space. Of course, the optical path between the first image source 10 and the concave mirror 40 may be larger than the optical path between the second image source 20 and the concave mirror 40.
Further, in order to make the imaging of the windshield 50 clearer, a highly reflective film may be attached to the surface of the windshield 50. A wedge shaped windshield 50 may be further employed to eliminate ghosting.
Regarding the switching of the first image source 10 and the second image source 20, this can be achieved by the following several embodiments:
The following embodiments take the example that the optical path length of the first image source 10 and the concave reflecting mirror 40 is smaller than the optical path length of the second image source 20 and the concave reflecting mirror 40, but the present invention is not limited thereto.
First embodiment: referring to fig. 1, the head-up display further includes a first moving device 60, where the first moving device 60 is connected to the plane mirror 30, and is used to move the plane mirror 30 out of or into between the concave mirror 40 and the first image source 10, i.e. when the second image source 20 is required to image, the plane mirror 30 is moved into between the concave mirror 40 and the first image source 10, so as to block the first light L1, reflect the second light L2, and form a remote second image P2. When the first image source 10 is required to image, the plane mirror 30 is moved out between the concave mirror 40 and the first image source 10, so as to avoid shielding the first light L1, and not receiving and reflecting the second light L2, thereby forming a first image P1 at a close distance.
Second embodiment: referring to fig. 2 and 3, the head up display further includes a lens switching device 70 and a light-transmitting mirror, both of which are connected to the lens switching device 70, and specifically, the light-transmitting mirror and the plane mirror 30 may be respectively semicircular, both of which form a complete circle, and the lens switching device 70 may include a rotation shaft 71 for fixedly connecting the light-transmitting mirror and the plane mirror 30 and a driver 72 for driving the rotation shaft 71 to rotate to switch the light-transmitting mirror and the plane mirror 30. The lens switching device 70 is used for switching the light-transmitting mirror and the plane mirror 30 between the first image source 10 and the concave mirror 40 in a time-sharing manner. That is, when the second image source 20 is required to image, the plane mirror 30 is cut into between the concave mirror 40 and the first image source 10, the first light L1 is blocked, the second light L2 is reflected, and the second image P2 at a long distance is formed. When the first image source 10 is required to image, the light-transmitting mirror is cut into the space between the concave mirror 40 and the first image source 10, the plane mirror 30 is moved out of the space between the concave mirror 40 and the first image source 10, the first light L1 is transmitted, the second light L2 is not reflected, and the first image P1 at a short distance is formed.
Third embodiment: the head-up display further includes an image source switching device for switching on the first image source 10 and the second image source 20 in a time-sharing manner, and the plane mirror 30 is a half-reflecting half-lens. That is, when the second image source 20 is required to image, the second image source 20 is turned on, the first image source 10 is turned off, and the half-reflection half-mirror reflects the second light L2 to form a remote second image P2. When the first image source 10 is required to image, the first image source 10 is turned on, the second image source 20 is turned off, and the half-reflecting and half-transmitting mirror transmits the first light L1 to form a first image P1 at a short distance.
In the above three embodiments, the first moving device 60, the lens switching device 70 and the image source switching device are all manually operated, preferably automatically operated according to the driving mode, specifically, the head-up display further includes a control device connected to the speed measuring device of the automobile, for controlling the first light L1 emitted by the first image source 10 to enter the concave mirror 40 or controlling the second light L2 emitted by the second image source 20 to enter the concave mirror 40 in real time according to the vehicle speed. That is, in the above-described first embodiment, the control device is connected to the first moving device 60; in the second embodiment described above, the control device is connected to the lens switching device 70; in the third embodiment described above, the control device is connected to the image source switching device. Therefore, the head-up display can automatically adjust the working mode in real time, and is more intelligent.
With further reference to fig. 3, the head-up display further comprises a second movement device 80 connected to the concave mirror 40 for better adjustability of the imaging distance. The concave reflecting mirror 40 is moved back and forth along the optical axis by the second moving device 80, so that the imaging position can be continuously changed back and forth to adapt to different visual field distances of a driver, and the use experience is better.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (11)
1. The head-up display is used for being installed in an automobile and is characterized by comprising a first image source, a second image source, a plane mirror and a concave mirror, wherein the plane mirror is movably arranged between the first image source and the concave mirror, the reflecting surface of the plane mirror faces towards the concave mirror, the second image source is arranged on one side of the plane mirror, which faces towards the concave mirror, the light emitted by the second image source is reflected to the concave mirror through the plane mirror, so that the second light of the second image source is folded and transmitted, the concave mirror reflects the first light emitted by the first image source and the second light emitted by the second image source reflected by the plane mirror to the windshield of the automobile in a time-sharing mode, the windshield images at different distances, and the head-up display further comprises a second moving device connected with the concave mirror, and the second moving device moves the concave mirror forwards and backwards along the optical axis of the concave mirror so that the imaging position continuously changes forwards and backwards.
2. The heads-up display of claim 1 wherein the first image source and the second image source are each projectors that display dashboard information for the vehicle.
3. The heads-up display of claim 2 wherein the first and second image sources are provided with map software, the images output by the first and second image sources further including driving environment information.
4. The head-up display of claim 1, wherein a centerline of the first light ray from the first image source and a centerline of the second light ray from the second image source are symmetrical about the planar mirror.
5. The heads-up display of claim 4 wherein an optical path between the first image source and the concave mirror is unequal to an optical path between the second image source and the concave mirror.
6. The head-up display of claim 1, further comprising a first moving means coupled to the planar mirror for moving the planar mirror out of or into between the concave mirror and a first image source.
7. The head-up display of claim 1, further comprising a lens switching device and a light transmissive mirror, wherein the light transmissive mirror and the planar mirror are both coupled to the lens switching device, and wherein the lens switching device is configured to time-share the light transmissive mirror and the planar mirror between the first image source and the concave mirror.
8. The head-up display of claim 1, further comprising an image source switching device configured to time-division switch on the first image source and the second image source, wherein the planar mirror is a half-mirror half-lens.
9. The head-up display of claim 6, further comprising a control device coupled to the vehicle speed measurement device for controlling the first light from the first image source to be incident on the concave mirror or the second light from the second image source to be incident on the concave mirror in real time according to a vehicle speed;
the control device is connected with the mobile device.
10. The head-up display of claim 7, further comprising a control device coupled to the vehicle speed measurement device for controlling the first light from the first image source to be incident on the concave mirror or the second light from the second image source to be incident on the concave mirror in real time according to a vehicle speed;
the control device is connected with the lens switching device.
11. The head-up display of claim 8, further comprising a control device coupled to the vehicle speed measurement device for controlling the first light from the first image source to be incident on the concave mirror or the second light from the second image source to be incident on the concave mirror in real time according to a vehicle speed;
The control device is connected with the image source switching device.
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| CN201711362136.7A CN109932819B (en) | 2017-12-18 | 2017-12-18 | Head-up display |
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| CN201711362136.7A CN109932819B (en) | 2017-12-18 | 2017-12-18 | Head-up display |
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| CN109932819A CN109932819A (en) | 2019-06-25 |
| CN109932819B true CN109932819B (en) | 2024-06-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021068480A1 (en) * | 2019-10-10 | 2021-04-15 | 宁波舜宇车载光学技术有限公司 | Multi-region imaging device and method |
| CN110764339A (en) * | 2019-10-10 | 2020-02-07 | 宁波舜宇车载光学技术有限公司 | Multi-zone imaging apparatus and method |
| CN112639581B (en) * | 2020-10-31 | 2022-09-02 | 华为技术有限公司 | Head-up display and head-up display method |
| CN116500783A (en) * | 2022-01-21 | 2023-07-28 | 华为技术有限公司 | Display device and vehicle |
| CN114660815A (en) * | 2022-03-28 | 2022-06-24 | 浙江水晶光电科技股份有限公司 | Head-up display device and vehicle |
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| CN207611202U (en) * | 2017-12-18 | 2018-07-13 | 深圳点石创新科技有限公司 | Head up display |
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| JP5590415B2 (en) * | 2011-04-19 | 2014-09-17 | 日本精機株式会社 | Display device |
| JP5713196B2 (en) * | 2011-08-30 | 2015-05-07 | トヨタ自動車株式会社 | Secondary battery electrode material and manufacturing method thereof |
| US20160109714A1 (en) * | 2012-08-14 | 2016-04-21 | National Tsing Hua University | Head-Up Display Device |
| US10254551B2 (en) * | 2014-06-13 | 2019-04-09 | Mitsubishi Electric Corporation | Virtual image display device |
| JP2016097921A (en) * | 2014-11-26 | 2016-05-30 | マツダ株式会社 | Vehicular driving assist display system |
| CN105785570B (en) * | 2014-12-26 | 2019-06-25 | 比亚迪股份有限公司 | A kind of vehicle-mounted head-up-display system and the vehicle comprising the system |
| JP6642103B2 (en) * | 2016-02-26 | 2020-02-05 | 日本精機株式会社 | Head-up display device |
| WO2017163288A1 (en) * | 2016-03-24 | 2017-09-28 | パナソニックＩｐマネジメント株式会社 | Headup display device and vehicle |
| JP2017206191A (en) * | 2016-05-20 | 2017-11-24 | 日本精機株式会社 | Head-up display device |
| US10012836B2 (en) * | 2016-05-23 | 2018-07-03 | Lg Electronics Inc. | Head up display for vehicle |
| CN206421102U (en) * | 2016-12-22 | 2017-08-18 | 深圳点石创新科技有限公司 | Head-up display device and the vehicle equipped with the head-up display device |
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| CN207611202U (en) * | 2017-12-18 | 2018-07-13 | 深圳点石创新科技有限公司 | Head up display |
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