
Originally Posted by
Pitts
As my first green machine is now operating (sorta!) .. my mind keeps turning to the RGB system.
One point of confusion seems to be the beam size. Greens abound in the 2-3mm size. Even blues and reds at lower power.
The moment you look at blues and reds over say 100 mw you get a FAT beam. Like 5mm plus
I am quite keen to look at one of Marconi's twin jobs but am hanging out hoping his new four beamer will show up soon.
Obviously the red sets the game plan for the rest of the design (I think) as this is where the money has to go first.
Any ideas ??
How important is it or am I reading too much into fat beams for an RGB given that I do want it to do graphics.
How do you compensate for say a nice 2mm green with a 2mm red and then a 5mm blue ?? how does that translate into white nicely ??
Thanks guys
Ray
NZ
The first RGB I built the blue was about 1 to 2mm bigger then the rest of the beams. When doing beams you will not even notice it at all. On graphics you will see a little fringing but the untrained eye will not notice. The white is still white because it is so bright the glare covers the fringing.
Now on the second the red is a little bigger and the effects are a little more pronounced due to the fact the eye is more sensitive to red.
"Gravity its not just a good idea its the law"