Light shutter projector with a fluorescent screen
US5957560A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Oct 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/62
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a ferroelectric liquid crystal display projector employing a fluorescent screen, including a light source emitting light of a predetermined wavelength; a first condensing lens for converting the light radiated from the light source into beams; a polarizing beam splitter for selecting a predetermined directional light in the incident light passing through the first condensing lens and for polarizing the light; a ferroelectric liquid crystal shutter on/off operated according to the polarizing operation of the polarizing beam splitter, the ferroelectric liquid crystal shutter comprising a reflecting layer attached on a backside and RAM devices attached on each pixel of a ferroelectric liquid crystal (FLC); an optical system for magnifying, at a predetermined ratio, the light reflected from the ferroelectric liquid crystal shutter; and a fluorescent screen of a fluorescent material which radiates by light, passing through the optical system, at a predetermined wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.