Picture generating apparatus comprising a funnel reflector having a double funnel structure for use in a head-up display
US11982807B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2023 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Feb 28, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0161
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for generating pictures for a head-up display includes: a printed circuit board (PCB) including a plurality of light sources; a liquid crystal display (LCD) disposed in front of the plurality of light sources and forming display images based on light emitted from the plurality of light sources; a funnel reflector including an internal optical surface including a double funnel structure and disposed between the PCB and the LCD to guide the light to the LCD; a housing including a space for accommodating the funnel reflector and including, on an upper surface thereof, an LCD seat for accommodating the LCD and a diffuser seat formed at the same angle as the LCD seat; and a diffuser accommodated in the diffuser seat, wherein the funnel reflector includes a tapered top surface and the top surface is formed at an angle corresponding to an angle of the diffuser seat to maintain a uniform distance from the diffuser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.