Backlight unit and holographic display apparatus including the same
US11366427B2 · kind B2 · utility
0Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2019 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Apr 30, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2223/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A backlight unit and a holographic display apparatus including the same are provided. The backlight unit includes a light guide plate and a uniformity changing element. The uniformity changing element has a light-incident surface and a light-exiting surface facing the light-incident surface, and the uniformity changing element receives the light output from the light guide plate through the light-incident surface, changes uniformity of the received light from the light guide plate and outputs the received light with the change in the uniformity of the received light through the light-exiting surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.