34.3: A Dual Depth Head Up Display System for Vehicle

Shi, Bao‐Sen; Hong, Tao; Wei, Wei; Li, Dianmeng; Yang, Fan; Wang, Xin; Wu, Naifu; Zhou, Chunmiao

doi:10.1002/sdtp.12730

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…Thus, a straightforward approach to dual-focal-plane AR-HUDs is to use two PGUs and even two sets of imaging optics. Although dual focal planes can be easily obtained by this approach, it introduces several drawbacks such as increased cost, reduced reliability, and expanded volume, making AR-HUDs unavailable in compact cars [6]. Further, to develop an AR-HUD using a single PGU and a single freeform mirror, Qin et al [2] proposes to divide a single PGU into two logically separated parts and optically relay one of them to a new position to create two focal planes.…”

Section: Introductionmentioning

confidence: 99%

34‐2: A dual‐focal‐plane augmented reality head‐up display using polarization multiplexing

Liu,

Dong,

Shi

et al. 2023

Symp Digest of Tech Papers

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The combination of augmented reality (AR) and head‐up display (HUD) makes HUD more and more attractive in recent years. In this paper, we propose a dual‐focal‐plane windshield‐type AR‐HUD prototype using a single freeform mirror, then fold the light path by polarization‐related elements to realize a compact volume using a single picture generation unit (PGU). The designed system meets the design specifications with experimental verification.

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Section: Introductionmentioning

confidence: 99%

34‐2: A dual‐focal‐plane augmented reality head‐up display using polarization multiplexing

Liu,

Dong,

Shi

et al. 2023

Symp Digest of Tech Papers

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“…Hong et al used two five-inch liquid crystal displays (LCDs) as PGUs, which shared an imaging optical system consisting of freeform and planar mirrors passing through the windshield to achieve a dual-depth image display. The image containing augmented reality information had a VID of 7.5 m and a 10 • × 5 • FOV, and the image containing basic driving information was 2.5 m with 5 • × 1 • FOV [19,20]. Qin et al presented a dual-focal-plane AR-HUD using a single LCD as the PGU and a single freeform mirror; two separated regions were set up on a single PGU with one optically relayed to a new position to create two focal planes.…”

Section: Introductionmentioning

confidence: 99%

Design of Dual-Focal-Plane AR-HUD Optical System Based on a Single Picture Generation Unit and Two Freeform Mirrors

Fan,

Kong,

Yang

et al. 2023

Photonics

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Augmented reality heads-up displays (AR-HUDs) have a much richer display than traditional heads-up displays. An ideal AR-HUD requires two or more focal planes to display basic and interactive driving information to the car driver separately. We present an off-axis reflective optical structure for dual-focal-plane displays using a single projection-type picture generation unit (PGU) and two freeform mirrors. The dual-focal-plane AR-HUD system designed in this paper can simultaneously generate high-quality far-field image (13° × 4°, 10 m) and near-field images (13° × 1.4°, 3.5 m) in a 130 mm × 60 mm eyebox. A fully automated analysis program is written to analyze the modulation transfer function (MTF) and distortion values of the optical system over the entire eyebox range. The analysis results show that the maximum distortion values of the far-field image and near-field image in the eyebox range are 3.15% and 3.58%, respectively. The MTF was greater than 0.3 at 7.2 lp/mm for both near-field images and far-field images. We also designed a projection lens for the projection-type PGU used in this system. The projection lens uses three plane mirrors to fold the image plane of the projection system into different positions to serve as the image source for the AR-HUD. This research provides a new solution for realizing the dual-focal-plane AR-HUD, which not only satisfies the need for simultaneous display of near-field basic information and far-field interactive information, but also has a larger display screen.

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“…Vehicle mounted head up display (HUD) is now becoming an active safety device for its ability on displaying various message without requiring changes of driver's visual sight which allows the driver to be focused mainly on the road. A novel dual depth HUD system, which could display general information and AR (augmented reality) information at different distance simultaneously, was developed in the previous work [1] , and the stray light suppression of the system was performed in this article.…”

Section: Introductionmentioning

confidence: 99%

57.6: Stray Light Suppression for a Dual Depth HUD System

Hong

Shi

et al. 2019

Symp Digest of Tech Papers

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The stray light of a dual depth windshield type HUD prototype was analyzed from two aspects: the imaging quality and the heat received by the PGUs from the sun. The primary path of the stray light was found using the ray path function of Lighttools program, and stray light suppression design was performed based on the analysis results. The stray light was reanalyzed after stray light suppression design, and the results indicated that the imaging quality was improved and the heating effect on the PGUs from the sun was significantly reduced.

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34.3: A Dual Depth Head Up Display System for Vehicle

Cited by 7 publications

References 2 publications

34‐2: A dual‐focal‐plane augmented reality head‐up display using polarization multiplexing

34‐2: A dual‐focal‐plane augmented reality head‐up display using polarization multiplexing

Design of Dual-Focal-Plane AR-HUD Optical System Based on a Single Picture Generation Unit and Two Freeform Mirrors

57.6: Stray Light Suppression for a Dual Depth HUD System

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