Holographic image display device and method for driving the same
US9618903B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2013 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Jun 8, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2210/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed are a holographic image display device and a method for driving the same which may stabilize luminance of a holographic image and reduce flicker. The holographic image display device includes a laser backlight unit, a surface light converter converting laser light emitted from the laser backlight unit into surface light-type laser light and emitting the surface light-type laser light, a spatial light modulator (SLM) implementing an input holographic interference pattern and projecting a holographic image at a viewing point using the surface light-type laser light, and an optical switching unit located between the laser backlight unit and the SLM and controlling polarization of the laser light. The optical switching unit blocks laser light emitted to the SLM in a blocking mode, and transmits the laser light emitted to the SLM in a transmission mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.