Light control apparatus, passive light-emitting image source and head-up display system
US12320974B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2020 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Nov 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0196
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light control apparatus, a passive light-emitting image source and a head-up display system are provided. The head-up display system includes a light source, a collimator element, a light concentrator element, a diffuser element, a liquid crystal panel and a transflective reflection device for displaying; the collimator element is configured to adjust an exit direction of light emitted by the light source into a preset angle range; the light concentrator element is configured to concentrate the light emitted by the light source; the diffuser element is configured to diffuse the light emitted by the light source; the liquid crystal panel is configured to convert the light emitted by the light source into imaging light, and allow the imaging light to be incident on the reflection device for displaying; and the reflection device for displaying is configured to reflect the imaging light to a preset region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.