Optics: image projectors – Shutter
Patent
1997-10-20
1999-09-28
Dowling, William
Optics: image projectors
Shutter
353 84, 353 20, 348760, G03B 2114
Patent
active
059575603
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.
REFERENCES:
patent: 3918803 (1975-11-01), Friesem
patent: 4714956 (1987-12-01), Yin
patent: 4737840 (1988-04-01), Morishita
patent: 4872750 (1989-10-01), Morishita
patent: 5015999 (1991-05-01), Imai et al.
patent: 5473396 (1995-12-01), Okajima et al.
Bae Jae-woo
Do Young-rag
Kim Jang-ho
Lee Joon-bae
Park Chang-won
Dowling William
Samsung Display Devices Co. Ltd.
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