Projection television set

Details Projection television set Projection television set

1989-03-31

1991-01-22

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358237, 358253, 313474, 313112, 350438, H04N 918, H04N 574, H04N 572

Patent

active

049874837

ABSTRACT:
In a projection television set including red, green and blue CRTs, and red, green and blue projection lens systems, the green projection lens system is provided with a coating or a filter having a high reflecting coefficient against light below about 520 nm and above about 570 nm in wavelength. Therefore, unnecessary light, emitted from a green light source in the green projection lens system, can be reflected by the coating of filter so that only necessary light is passed. This allows for a projection television set which contains a color reproduction range closer to the color reproduction range of a standard television set.

REFERENCES:
patent: 3723805 (1973-03-01), Scarpino
patent: 4679069 (1987-07-01), Andrea et al.
patent: 4753519 (1988-06-01), Miyatake
patent: 4807014 (1989-02-01), Van Gorkum et al.

Affiliated with

Also associated with

Rating

Projection television set does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Projection television set, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection television set will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1558149