Light guide member and display device
US12265225B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2021 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | Jan 28, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0123
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light guide member (300) includes a boundary surface (304) configured to reflect image light guided to the boundary surface (304) and emit the image light outside the light guide member (300), an opposing surface (306) parallel to the boundary surface (304), the opposing surface (306) facing the boundary surface (304), a first inclined surface (305) having an inclination in which a distance between the first inclined surface (305) and the boundary surface (304) decreases in a guiding direction of the image light, and a second inclined surface (307) between the opposing surface (306) and the first inclined surface (305), the second inclined surface (307) inclined at a different angle with the first inclined surface (305) in the guiding direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.