Mitsubishi TriniScope Color TV

[ohohyodafarted]

John, It's bright like daylight!

John Folsom and I spend a few days working on his set when I was down in Florida a couple weeks back. It has an excellent picture. Very bright and I bet you could watch it outside in daylight because the image is sheltered inside the viewing cabinet.

John said he has it all back together now and is having trouble getting good screen shots of the image. Must have something to do with trying to photograph through the dichroic mirrors.

But seeing in person, the picture this little set will put out, will knock your socks off.

Think about it for a minute, no shadow mask soaking up the emissions from the electron guns, the entire face of the crt is one homogeneous coating of phospur with no wasted blank area between the round dots, and you have 3 times the lumens per square inch because the power of the 3 tubes is additive when superimposed. You probably lose some brilliance when the light passes through the dichroic mirrors but it still produces a SUPER bright picture.

The thing that impressed me the most was that to achieve good covergence, all 3 images need to have the exact horizontal and vertical linearity, height and width. That is no small accomplishment, but the convergence is dam near spot on all over the entire screen. There are a bunch of little magnets positioned around the back of the crt that help achieve this, but without any instructions on what each magnet does, we left those alone. And of course there are seperate height width and linearity controls for each crt.

Bob