Optical: systems and elements – Projection screen – Unitary sheet comprising plural refracting areas
Patent
1996-07-03
1998-06-16
Malley, Daniel P.
Optical: systems and elements
Projection screen
Unitary sheet comprising plural refracting areas
G03B 2156
Patent
active
057680140
ABSTRACT:
Disclosed is a rear projection screen having improved contrast and brightness. A screen for receiving an incident projection beam from a projection lens from a rear side of the screen and for transmitting the received light toward an observer is comprised. A fresnel lens for collimating the projection beam is included. The fresnel lens is formed on one side of the screen, where the projection beam from the projection lens is incident. A light absorbing layer for absorbing an external light incident into the screen and for reflecting a light incident from the fresnel lens is comprised. Also comprised is a light dispersing layer for dispersing the projection beam incident from a rear side of the screen and the reflected light from the light absorbing layer. The light absorbing layer and the light dispersing layer are formed on an observer's side of the screen. The screen has a one sheet structure having a novel light dispersing system. The manufacture of the screen is advantageous and the image reproduced on the screen is good quality.
REFERENCES:
patent: 4468092 (1984-08-01), Inoue
patent: 4525029 (1985-06-01), Inoue
patent: 4573764 (1986-03-01), Bradley
patent: 4701202 (1987-10-01), Foster
patent: 5064273 (1991-11-01), Lee
patent: 5085497 (1992-02-01), Um
patent: 5111337 (1992-05-01), Martinez
patent: 5126836 (1992-06-01), Um
patent: 5159225 (1992-10-01), Um
patent: 5175465 (1992-12-01), Um
patent: 5581407 (1996-12-01), Mitani et al.
patent: 5613748 (1997-03-01), Yoshida et al.
patent: 5633755 (1997-05-01), Manabe et al.
Daewoo Electronics Co. Ltd.
Malley Daniel P.
LandOfFree
Rear projection screen does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rear projection screen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rear projection screen will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1732301