Head-up display device
US10712558B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 17, 2018 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Dec 17, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133531
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A vehicle head-up display includes a liquid crystal panel, a light source, a first polarizing panel, and a second polarizing panel. The liquid crystal panel has opposing input and output surfaces. The liquid crystal panel is configured to form an image oriented relative to a horizontal axis. The light source is configured to direct light toward the input surface, through the liquid crystal panel, and out of the output surface to project the image onto an interior surface of a vehicle windshield. The first polarizing panel is secured to the output surface and has a first polarization axis oriented at a first angle relative to the horizontal axis. The second polarizing panel is disposed between the first polarizing panel and the windshield. The second polarizing panel has a second polarization axis oriented oriented at a second angle relative to the horizontal axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.