Electronic holographic display device
US9535401B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2013 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Oct 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2225/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electronic holographic display device includes: a beam emitting device; a plurality of polarizing beam splitters; a plurality of spatial light modulators, each of which is disposed with prescribed distances therebetween and modulates a beam vertically made incident from the corresponding polarizing beam splitter; a magnifying optical system; and a reducing optical system. The magnifying optical system includes a first lens array and a second lens array. The reducing optical system includes a third lens array and a fourth lens array. A distance “a” between the spatial light modulator and the first lens is represented by a=(k+2)f0/(k+1), wherein a ratio “k” is a distance between two adjacent spatial light modulators, to a size of the spatial light modulator, and f0 is a focal point distance of the first lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.