Head-up display
US10852538B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2018 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | May 25, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133531
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A head-up display includes a backlight, a liquid crystal display panel, a virtual image optical system, a wavelength selection member that is made of resin having an optical characteristic which absorbs infrared rays and transmits a visible light, and a housing that houses the virtual optical system and the wavelength selection member, in which the virtual optical system includes a lens unit and a free-form surface mirror disposed along an emission direction of the display image light in order from a position closer to an emission surface of the display image light in the liquid crystal display panel, and the wavelength selection member is disposed on an optical path of the display image light extending from an emission surface of the display image light in the liquid crystal display panel to an opening of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.