Head-up display device with uniform brightness
US10488657B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 2017 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Apr 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2380/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a display device having high display quality. The head-up display device 100 comprises: a single display unit that outputs display light; an imaging position adjustment mirror that generates display light and display light upon receiving the display light, and sets a distance from the imaging position adjustment mirror to the position at which an image is formed by the display light to be longer than the distance from the imaging position adjustment mirror to the position at which an image is formed by the display light; a first screen disposed at the imaging position of the display light; and a second screen disposed at the imaging position of the display light. The light distribution angle of the second screen is set to be larger than the light distribution angle of the first screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.