Optical system for projection type image display device

Details Optical system for projection type image display device Optical system for projection type image display device

1990-01-18

1992-04-07

Brinich, Stephen

Facsimile and static presentation processing

Static presentation processing

Attribute control

358231, H04N 931

Patent

active

051033020

ABSTRACT:
A projection type image display device provided with three projecting lenses projecting light emitted by cathode-ray tubes of different colors, red, green and blue, on a screen while enlarging an image is disclosed, in which clapper plates are disposed preferably in front of the red and the blue image source and the clapper plates have different shapes so as to obtain an image without the fluctuation in the color on the whole surface of the screen, even in the case where the distance from the cathode-ray tubes to the screen is shortened in order to reduce the size of the display device.

REFERENCES:
patent: 4679069 (1987-07-01), Andrea et al.
patent: 4730211 (1988-03-01), Hasegawa
patent: 4737840 (1988-04-01), Morishita
patent: 4827334 (1989-05-01), Johnson et al.
patent: 4914510 (1990-04-01), Brennesholtz et al.
patent: 4914511 (1990-04-01), Brennesholtz et al.
patent: 4931859 (1990-06-01), Dillard et al.

Affiliated with

Also associated with

Rating

Optical system for projection type image display device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical system for projection type image display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical system for projection type image display device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1899431