CN213365183U

CN213365183U - Turn-back type AR-HUD (augmented reality-high-definition) far and near view double-screen imaging system

Info

Publication number: CN213365183U
Application number: CN202022181146.4U
Authority: CN
Inventors: 张涛; 何飞; 吕涛
Original assignee: Jiangsu Zejing Automobile Electronic Co ltd
Current assignee: Jiangsu Zejing Automobile Electronic Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-04
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a formula AR-HUD far and near view double screen imaging system turns back, including first speculum, the second mirror, transmission group and display screen, the formation of image light that the display screen sent sees through transmission group and carries out the aberration optimization to compression or tensile optical path are transmitted to the second mirror, and on the second mirror reflects formation of image light to first speculum, and first speculum is with formation of image light reflection to windshield formation of image. The utility model discloses in the HUD system of reflective is added to the group of will transmitting for the long shot or the short shot light path of compression or tensile double screen display, under the condition of the first speculum of sharing simultaneously, second mirror and display screen, satisfy the distance sense of long shot and short shot formation of image. The transmission group ensures good chromatic aberration correction, and the first reflector and the second reflector are matched for aberration correction, so that the index requirement of the displayed image is ensured. The complexity of structural arrangement is greatly reduced, the stability of the system is improved, and the space volume of the AR-HUD is compressed. The feasibility of the whole vehicle assembly is improved.

Description

Turn-back type AR-HUD (augmented reality-high-definition) far and near view double-screen imaging system

Technical Field

The utility model relates to a AR-HUD technical field especially relates to a formula AR-HUD far and near view double-screen imaging system turns back.

Background

In the current stage, the W-HUD is widely applied to various automobiles, vehicle information required by a driver is displayed on a windshield glass, and unsafe factors caused by the fact that the driver frequently lowers head to watch the vehicle information can be avoided.

And AR-HUD double screen display can not only show the vehicle information that driver needs on windshield, more can realize driving the in-process supplementary driving function, increases the information feedback between driving environment and the vehicle.

The existing schemes for realizing AR-HUD all adopt a reflection type principle to realize double-screen display, and in order to realize the distinction between long shot and short shot, the optical path needs to be designed with different lengths. In this case, it is often the case that the first mirror is shared, which is implemented using two small mirrors. The scheme can not only increase the cost of optical parts, but also has the advantages that the two reflectors have special requirements on installation positions, the structural design difficulty is higher, the number of parts required by fixation is increased, the assembly efficiency is low, and the cost is high.

In the prior art, a first reflector and a second reflector are shared, and a double-screen scheme is realized by using two display screens. However, the AR-HUD generally requires a large viewing field, and requires a large design surface for the common large and small reflectors, which results in a large difficulty in processing the lens and high cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a formula AR-HUD far and near view double-screen imaging system turns back to the technical problem that exists among the prior art.

The utility model adopts the technical proposal that:

the utility model provides a formula AR-HUD far and near view double screen imaging system turns back, includes first speculum, second mirror, transmission group and display screen, the formation of image light that the display screen sent sees through the transmission group and carries out the aberration optimization to compression or tensile optical path are transmitted to on the second mirror, and the second mirror will form image light reflection to first speculum on, and first speculum will form image light reflection to windscreen formation of image.

Furthermore, the display screen is divided into two parts, namely a near view display screen area A and a far view display screen area B, the display screen is displayed in different areas to distinguish near view imaging light and far view imaging light, the near view display screen area A emits near view imaging light, and the far view display screen area B emits far view imaging light.

Furthermore, the first reflector is a free-form surface and reflects imaging light of a far view and a near view onto the windshield for imaging.

Furthermore, the second reflector is a free-form surface or a plane mirror, and reflects imaging light of a far and near scene onto the first reflector.

Further, the transmission group is an optical lens or an optical prism.

Preferably, the display screen is one of a TFT-LCD, DLP or LCOS.

The utility model has the advantages that:

the utility model discloses a formula AR-HUD far and near view double screen imaging system turns back will transmit the HUD system of group joining reflective for the long-range view or the short-range view light path of compression or tensile double screen display show, under the condition of the first speculum of sharing simultaneously, second mirror and display screen, satisfy the distance sense of long-range view and short-range view formation of image. The transmission group ensures good chromatic aberration correction, and the first reflector and the second reflector are matched for aberration correction, so that the index requirement of the displayed image is ensured. The complexity of structural arrangement can be greatly reduced, the stability of the system is improved, and the space volume of the AR-HUD is reduced. The processing precision requirement of the optical parts is reduced, and the processing yield of the optical parts is improved. The feasibility of the whole vehicle assembly is improved.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic side view of a structure of a stretching optical path of an optical lens foldback AR-HUD close-range dual-screen imaging system according to an embodiment of the present invention;

fig. 2 is a schematic side view of a compressed optical path structure of an optical lens foldback AR-HUD long-range dual-screen imaging system according to an embodiment of the present invention;

fig. 3 is a schematic side view of a compressed optical path structure of an optical prism foldback AR-HUD long-range dual-screen imaging system according to an embodiment of the present invention.

In the figure, 1-eye box 2-windshield glass 3-close-range image 4-far-range image 5-first reflector 6-second reflector 7-transmission group 8-close-range display screen A area 9-far-range display screen B area.

Detailed Description

In order to enhance the understanding of the present invention, the following detailed description of the present invention is made with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1-3, the utility model relates to a formula of turning back AR-HUD perspective double screen imaging system, including first speculum 5, the second mirror 6, transmission group 7 and display screen, the formation of image light that the display screen sent sees through transmission group and carries out the aberration optimization to compression or tensile optical path are transmitted to on the second mirror 6, and the second mirror 6 reflects formation of image light to first speculum 5 on, and first speculum 5 reflects formation of image light to windshield formation of image.

In this embodiment, the display screen is one of a TFT-LCD, a DLP, or an LCOS, and the display screen is divided into two parts, namely, a near view display screen a region 8 and a far view display screen B region 9, and the near view imaging light and the far view imaging light are distinguished by displaying in different regions of the display screen, the near view display screen a region 8 emits the near view imaging light, and the far view display screen B region 9 emits the far view imaging light, so as to provide different imaging information of the far and near views for the HUD.

In this embodiment, the first reflector 5 is a free-form surface, and reflects the imaging light of the distant view and the close view onto the windshield for imaging.

In this embodiment, the second reflector 6 is a free-form surface or a flat mirror, and reflects the imaging light from the far and near view onto the first reflector.

In this embodiment, the transmission set 7 is an optical lens or an optical prism, and the transmission set 7 optimizes the near view light or the far view light to correct various aberrations of the system and ensure good correction of chromatic aberration caused by the transmission system. And the image quality of the HUD system is ensured to meet the system requirements. And the optical path compression or stretching is carried out on the close-range light or the far-range light, so that the image has the effect of distance difference under the condition that the positions of all parts are the same.

Close-range display: the imaging light of the close shot is emitted from the display area A of the display screen, the imaging light passes through the transmission group, the optical path of the light which can be imaged clearly is changed, the changed light is reflected to the first reflector through the second reflector, and then is reflected to the windshield glass through the first reflector for imaging.

And (3) distant view display: and the imaging light rays of the long shot scene are emitted from the display area B of the display screen, the optical path of the light rays which can be clearly imaged is changed by the imaging light rays through the transmission group, and the changed light rays are reflected to the first reflector through the second reflector and then reflected to the windshield glass through the first reflector for imaging.

The purpose of the utility model is realized like this: the foldback type AR-HUD system realizes the simultaneous sharing of the first reflector, the second reflector and the display screen in the long-distance view and the short-distance view by adding a group of transmission groups. The complexity of the structural design is reduced, the system assembly efficiency is improved, and the structural cost is reduced. Compared with the processing of a free-form surface, the processing of the transmission group is more mature through years of development process and the price is lower. The transmission group shares the aberration correction of a near-view or far-view light path, shares the aberration correction born by the first reflector and the second reflector, reduces the surface design complexity of the first reflector and the second reflector, improves the yield of the first reflector and the second reflector, and reduces the price.

Through the mode of increasing a set of transmission group, realize showing at the AR-HUD equipment of different image distance, solved the unable problem of sharing first speculum, second mirror and display screen simultaneously. The difficulty of AR-HUD reflector processing and the complexity of structural design caused by incapability of being shared are reduced, the space volume of the AR-HUD is reduced, and the feasibility of finished automobile assembly is improved.

The utility model relates to a specific working process of a foldback AR-HUD far and near view double-screen imaging system,

the AR-HUD high-and-low view double-screen display can be realized, and the first reflecting mirror, the second reflecting mirror and the display screen are shared simultaneously. The display screen is used for displaying in different areas to distinguish long-shot imaging light and short-shot imaging light, the short-shot display screen A area emits the short-shot imaging light, and the long-shot display screen B area emits the long-shot imaging light. The near view imaging or the far view light passes through the transmission set to carry out aberration optimization, and the optical path is compressed or stretched. The high-transmittance film is plated to ensure that the imaging brightness is not obviously lost. The short-range light or long-range light passing through the transmission set is transmitted to the second reflector, and the second reflector reflects the short-range and long-range imaging light to the first reflector. The first reflector reflects the imaging light of the close shot and the long shot to the windshield glass for imaging. The requirement that human eyes can simultaneously see images imaged at different distances is met.

It should be noted that the above-mentioned embodiments are illustrative and not restrictive of the technical solutions of the present invention, and equivalents of those skilled in the art or other modifications made according to the prior art are intended to be included within the scope of the claims of the present invention as long as they do not exceed the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a formula of turning back AR-HUD perspective double screen imaging system which characterized in that: the optical imaging device comprises a first reflector, a second reflector, a transmission group and a display screen, wherein imaging light rays emitted by the display screen are subjected to aberration optimization through the transmission group, and an optical path is compressed or stretched and transmitted to the second reflector, the second reflector reflects the imaging light rays to the first reflector, and the first reflector reflects the imaging light rays to the windshield for imaging.

2. A foldback AR-HUD telescopic dual-screen imaging system according to claim 1, wherein: the display screen is divided into two parts, namely a near view display screen area A and a far view display screen area B, the near view imaging light and the far view imaging light are distinguished through different areas of the display screen, the near view display screen area A emits the near view imaging light, and the far view display screen area B emits the far view imaging light.

3. A foldback AR-HUD telescopic dual-screen imaging system according to claim 2, wherein: the first reflector is a free-form surface and reflects imaging light of a far scene and a near scene onto the windshield glass for imaging.

4. A foldback AR-HUD telescopic dual-screen imaging system according to claim 3, wherein: the second reflector is a free-form surface or a plane mirror and reflects imaging light of a far and near scene to the first reflector.

5. A foldback AR-HUD telescopic dual-screen imaging system according to claim 4, wherein: the transmission group is an optical lens or an optical prism.

6. A foldback AR-HUD telescopic dual-screen imaging system according to claim 5, wherein: the display screen is one of TFT-LCD, DLP or LCOS.