CN214795426U - Head-up display optical system adopting free curved array lens for visual angle expansion - Google Patents
Head-up display optical system adopting free curved array lens for visual angle expansion Download PDFInfo
- Publication number
- CN214795426U CN214795426U CN202121102705.6U CN202121102705U CN214795426U CN 214795426 U CN214795426 U CN 214795426U CN 202121102705 U CN202121102705 U CN 202121102705U CN 214795426 U CN214795426 U CN 214795426U
- Authority
- CN
- China
- Prior art keywords
- free
- form surface
- visual angle
- spectroscope
- path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Instrument Panels (AREA)
Abstract
A head-up display optical system using a free curved array mirror for view angle expansion. The automobile eye protection film comprises a light emitting source, a diffusion sheet, a first free-form surface spectroscope, a second free-form surface spectroscope, a third free-form surface spectroscope, an automobile windshield, an eye box and a virtual image forming position, wherein the diffusion sheet is arranged at a light ray exit end of the light emitting source; the imaging light path of the head-up display optical system comprises an upper visual angle path, a middle visual angle path and a lower visual angle path. The head-up display optical system adopts a free-form surface spectroscope array mode to display images of three light paths of an upper visual angle, a middle visual angle and a lower visual angle, achieves larger visual angle expansion, and is more simplified in structure and higher in light path efficiency compared with a plane spectroscope array mode.
Description
Technical Field
The utility model relates to an on-vehicle optical display equipment, especially an adopt free-form surface spectroscope array mirror mode to realize the image display of three kinds of visual angle light paths from top to bottom, and then realize the new line display optical system that new line display visual angle extension and structure are more retrencied.
Background
With the development of the automobile industry, the technology of assisting driving is changing day by day, and the application of the vehicle-mounted head-up display equipment is increasingly wide, and the structure of the vehicle-mounted head-up display equipment mainly comprises a luminous source, a curved mirror, an automobile windshield and an eye box.
The vehicle-mounted head-up display device obviously brings convenience to a driver, for example, important driving information such as speed per hour and navigation is more convenient to view without lowering head, or the driver can view the lower part and the rear part of the automobile without twisting and lowering head, so that the vehicle-mounted head-up display device greatly facilitates the driver, can concentrate on driving the automobile, and correspondingly increases the comfort level.
The existing vehicle-mounted head-up display equipment has the following defects: the existing vehicle-mounted head-up display device mainly adopts a single imaging light path and can only display a luminous source image with a certain visual angle, and if the vehicle-mounted head-up display device needs to realize luminous source image display with a larger visual angle or enlarge and display the visual angle of a luminous source image, the existing head-up display device has certain limitations; there is also a head-up display device using double-screen display, which is mainly realized by two light sources, and can realize a certain view angle expansion, but its light path structure design is inconvenient, and its view angle expansion still has limitations.
Disclosure of Invention
The utility model aims at solving the technical problem, provide an adopt free curved surface array mirror to carry out new line display optical system of visual angle extension, this new line display optical system adopts free curved surface spectroscope array mirror mode, carries out the image display of three kinds of light paths of visual angle, well visual angle, downward visual angle, realizes great visual angle extension, and for plane spectroscope array mirror mode, the structure is more retrencied simultaneously, and light path efficiency is higher.
In order to solve the above-mentioned prior art problem, the technical scheme of the utility model is that:
the utility model relates to an adopt free curved surface array mirror to carry out new line display optical system of visual angle extension, it includes the light emitting source, diffusion piece, free curved surface spectroscope one, free curved surface spectroscope two, free curved surface spectroscope three, car windshield, eye box, the virtual image position of formation that sets gradually, the diffusion piece sets up in the light outgoing end of light emitting source, free curved surface spectroscope one, free curved surface spectroscope two, free curved surface spectroscope three set up in the below of car windshield, the virtual image position of formation is located the dead ahead of eye box;
the imaging light path of the head-up display optical system comprises an upper visual angle path, a middle visual angle path and a lower visual angle path;
the imaging light path of the upper visual angle path is as follows: the imaging light rays start from the light emitting source, pass through the diffusion sheet, then are reflected to the automobile windshield through the free-form surface spectroscope I and are reflected to the eye box position through the automobile windshield, and the human eyes at the eye box position see the image at the virtual image position through the reverse extension line of the imaging light rays, so that the image display of the upper visual angle path is realized;
the imaging light path of the middle visual angle path is as follows: imaging light rays start from a light emitting source, pass through a diffusion sheet, then pass through a first free-form surface spectroscope and a second free-form surface spectroscope, are reflected to an automobile windshield by the second free-form surface spectroscope and are reflected to an eye box position by the automobile windshield, and the human eyes at the eye box position see images at virtual image positions through a reverse extension line of the imaging light rays, so that the image display of an upper visual angle path is realized;
the imaging light path of the lower visual angle path is as follows: imaging light is started by the luminous source, passes through the diffusion piece, then passes through free-form surface spectroscope I, free-form surface spectroscope II, free-form surface spectroscope III, is reflected to car windshield by free-form surface spectroscope III to reflect to the eye box position via car windshield, the image that becomes the virtual image position is seen through the reverse extension line of imaging light to the eyes of eye box position, realizes the image display of visual angle route.
Furthermore, included angles between the free-form surface spectroscope I, the free-form surface spectroscope II and the free-form surface spectroscope III and the direction of the z axis are theta 1, theta 2 and theta 3 respectively, a measurement baseline of the included angles is parallel to the z axis and is vertical to the y axis, the theta 1, the theta 2 and the theta 3 are equivalent or unequal, and when the theta 1, the theta 2 and the theta 3 are unequal, the difference among the theta 1, the theta 2 and the theta 3 is +/-5 degrees;
further, the head-up display optical system is used for reducing the volume and adopts an array mirror design mode, the reflectivities of the first free-form surface spectroscope, the second free-form surface spectroscope and the third free-form surface spectroscope are respectively R1, R2 and R3, the transmittances of the first free-form surface spectroscope, the second free-form surface spectroscope and the third free-form surface spectroscope are respectively T1, T2 and T3, and the reflectivities meet the conditions: r1> R2> R3, the penetration rate satisfying the condition: t3> T2> T1.
The utility model relates to an adopt free curved surface array mirror to carry out new line display optical system of visual angle extension, its beneficial effect has:
1. the head-up display optical system adopts a free-form surface spectroscope array mode to display images of three light paths of an upper visual angle, a middle visual angle and a lower visual angle, so that larger visual angle expansion is realized;
2. compared with the prior technical scheme of adopting a planar beam splitter array lens and a free-form surface lens to expand the visual angle, the scheme has the advantages of more simplified structure and higher light path efficiency.
Drawings
Fig. 1 is a structural diagram of a head-up display optical system (including an upper viewing angle path, a middle viewing angle path, and a lower viewing angle path) using a free curved array mirror for viewing angle expansion according to the present invention;
FIG. 2 is an imaging optical path diagram of the path of the upper viewing angle in the embodiment of FIG. 1;
FIG. 3 is an imaging optical path diagram of the intermediate view path in the embodiment of FIG. 1;
FIG. 4 is an imaging optical path diagram of the lower viewing angle path in the embodiment of FIG. 1;
FIG. 5 is a schematic diagram of an included angle between a first free-form surface beam splitter, a second free-form surface beam splitter, and a third free-form surface beam splitter and a Z axis in the embodiment shown in FIG. 1;
fig. 6 is a schematic diagram of the reflectivity and transmittance of the first free-form surface beam splitter, the second free-form surface beam splitter, and the third free-form surface beam splitter in the embodiment shown in fig. 1.
Detailed Description
The invention will be further described with reference to the following examples:
example (b):
as shown in fig. 1-6, the utility model relates to an adopt free curved surface array mirror to carry out new line display optical system of visual angle extension, it includes light emitting source 1, diffusion piece, free curved surface spectroscope one 2, free curved surface spectroscope two 3, free curved surface spectroscope three 4, car windshield 5, eye box 6, the virtual image position that sets gradually, the diffusion piece sets up in the light outgoing end of light emitting source, free curved surface spectroscope one, free curved surface spectroscope two, free curved surface spectroscope three set up in the below of car windshield, the virtual image position is located the dead ahead of eye box;
the imaging light path of the head-up display optical system comprises an upper visual angle path, a middle visual angle path and a lower visual angle path;
the imaging light path of the upper visual angle path is as follows: the imaging light rays start from the light emitting source, pass through the diffusion sheet, then are reflected to the automobile windshield through the free-form surface spectroscope I and are reflected to the eye box position through the automobile windshield, and the human eyes at the eye box position see the image at the virtual image position through the reverse extension line of the imaging light rays, so that the image display of the upper visual angle path is realized;
the imaging light path of the middle visual angle path is as follows: imaging light rays start from a light emitting source, pass through a diffusion sheet, then pass through a first free-form surface spectroscope and a second free-form surface spectroscope, are reflected to an automobile windshield by the second free-form surface spectroscope and are reflected to an eye box position by the automobile windshield, and the human eyes at the eye box position see images at virtual image positions through a reverse extension line of the imaging light rays, so that the image display of an upper visual angle path is realized;
the imaging light path of the lower visual angle path is as follows: imaging light is started by the luminous source, passes through the diffusion piece, then passes through free-form surface spectroscope I, free-form surface spectroscope II, free-form surface spectroscope III, is reflected to car windshield by free-form surface spectroscope III to reflect to the eye box position via car windshield, the image that becomes the virtual image position is seen through the reverse extension line of imaging light to the eyes of eye box position, realizes the image display of visual angle route.
Furthermore, included angles between the free-form surface spectroscope I, the free-form surface spectroscope II and the free-form surface spectroscope III and the direction of the z axis are theta 1, theta 2 and theta 3 respectively, a measurement baseline of the included angles is parallel to the z axis and is vertical to the y axis, the theta 1, the theta 2 and the theta 3 are equivalent or unequal, and when the theta 1, the theta 2 and the theta 3 are unequal, the difference among the theta 1, the theta 2 and the theta 3 is +/-5 degrees;
further, the head-up display optical system is used for reducing the volume and adopts an array mirror design mode, the reflectivities of the first free-form surface spectroscope, the second free-form surface spectroscope and the third free-form surface spectroscope are respectively R1, R2 and R3, the transmittances of the first free-form surface spectroscope, the second free-form surface spectroscope and the third free-form surface spectroscope are respectively T1, T2 and T3, and the reflectivities meet the conditions: r1> R2> R3, the penetration rate satisfying the condition: t3> T2> T1.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (3)
1. A head-up display optical system adopting a free curved surface array mirror to carry out visual angle expansion is characterized in that:
the automobile eye protection film comprises a light emitting source, a diffusion sheet, a first free-form surface spectroscope, a second free-form surface spectroscope, a third free-form surface spectroscope, an automobile windshield, an eye box and a virtual image forming position, wherein the diffusion sheet is arranged at a light ray exit end of the light emitting source;
the imaging light path of the head-up display optical system comprises an upper visual angle path, a middle visual angle path and a lower visual angle path;
the imaging light path of the upper visual angle path is as follows: the imaging light rays start from the light emitting source, pass through the diffusion sheet, then are reflected to the automobile windshield through the free-form surface spectroscope I and are reflected to the eye box position through the automobile windshield, and the human eyes at the eye box position see the image at the virtual image position through the reverse extension line of the imaging light rays, so that the image display of the upper visual angle path is realized;
the imaging light path of the middle visual angle path is as follows: imaging light rays start from a light emitting source, pass through a diffusion sheet, then pass through a first free-form surface spectroscope and a second free-form surface spectroscope, are reflected to an automobile windshield by the second free-form surface spectroscope and are reflected to an eye box position by the automobile windshield, and the human eyes at the eye box position see images at virtual image positions through a reverse extension line of the imaging light rays, so that the image display of an upper visual angle path is realized;
the imaging light path of the lower visual angle path is as follows: imaging light is started by the luminous source, passes through the diffusion piece, then passes through free-form surface spectroscope I, free-form surface spectroscope II, free-form surface spectroscope III, is reflected to car windshield by free-form surface spectroscope III to reflect to the eye box position via car windshield, the image that becomes the virtual image position is seen through the reverse extension line of imaging light to the eyes of eye box position, realizes the image display of visual angle route.
2. The head-up display optical system using a free-form curved array mirror for viewing angle expansion according to claim 1, wherein the first free-form surface beam splitter, the second free-form surface beam splitter, and the third free-form surface beam splitter respectively include angles θ 1, θ 2, and θ 3 with respect to a z-axis direction, a measurement baseline of the included angles is parallel to the z-axis and perpendicular to the y-axis, the angles θ 1, θ 2, and θ 3 are equal or unequal, and when the angles θ 1, θ 2, and θ 3 are unequal, a difference between the angles θ 1, θ 2, and θ 3 is ± 5 °.
3. The head-up display optical system for expanding a viewing angle by using a free-form curved array mirror according to claim 1, wherein the head-up display optical system is a head-up display optical system for reducing a volume and adopting an array mirror design mode, reflectances of the first free-form surface beam splitter, the second free-form surface beam splitter and the third free-form surface beam splitter are R1, R2 and R3, transmittances of the first free-form surface beam splitter, the second free-form surface beam splitter and the third free-form surface beam splitter are T1, T2 and T3, respectively, and the reflectances satisfy the following conditions: r1> R2> R3, the penetration rate satisfying the condition: t3> T2> T1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121102705.6U CN214795426U (en) | 2021-05-21 | 2021-05-21 | Head-up display optical system adopting free curved array lens for visual angle expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121102705.6U CN214795426U (en) | 2021-05-21 | 2021-05-21 | Head-up display optical system adopting free curved array lens for visual angle expansion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214795426U true CN214795426U (en) | 2021-11-19 |
Family
ID=78696706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121102705.6U Active CN214795426U (en) | 2021-05-21 | 2021-05-21 | Head-up display optical system adopting free curved array lens for visual angle expansion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214795426U (en) |
-
2021
- 2021-05-21 CN CN202121102705.6U patent/CN214795426U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102071693B1 (en) | Head-Up Display Apparatus | |
| CN1102754C (en) | Backlighting device and color display device | |
| JP7117066B2 (en) | Vehicle information display device and vehicle information display system | |
| US11131851B2 (en) | Virtual image display device | |
| US11353713B2 (en) | Virtual image display device | |
| US20190369395A1 (en) | Virtual image display device | |
| CN108828773A (en) | A kind of AR-HUD light path system of convertible adjusting | |
| JP2009115908A (en) | Mirror optical system and headup display | |
| JPWO2019163171A1 (en) | Mobile body with head-up display and head-up display | |
| CN113022591A (en) | Vehicle-mounted head-up display device based on augmented reality | |
| CN214795426U (en) | Head-up display optical system adopting free curved array lens for visual angle expansion | |
| US11300796B2 (en) | Virtual image display device | |
| TWI587005B (en) | Composite car head display device | |
| GB2400187A (en) | Vehicle head up display with focusing prism and reflector | |
| CN216792588U (en) | Imaging display device | |
| CN110673341A (en) | HUD long and short shot display optical system | |
| CN115128812A (en) | AR-HUD and its long and short sight double optical path system | |
| WO2018110336A1 (en) | Head-up display device | |
| CN115032798A (en) | AR-HUD and its long and short sight double optical path system | |
| JPH0456633A (en) | Head up display device | |
| JP3219059U (en) | Optical projection device | |
| US20200049987A1 (en) | Virtual image display device | |
| CN112415757A (en) | Head-up display optical system adopting array mirror mode to expand visual angle | |
| KR20100044526A (en) | Head up display device for automobile | |
| CN218446222U (en) | Head-up display optical system for commercial vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |