Just something i was thinking about while trying the slide sstv flying spot idea and put the idea out there .
Thinking of a cross between flying spot and direct light camera which i suppose original tv camera tubes are or were in their case using electron scanning.
I was wondering if it were possible to reverse the idea a little ,i rather a mechanical version perhaps laser mechanical scanning but an easier description is to use a crt tube as in the scope set up as is , if you focused and image on a white scope screen instead of placing a slide transparency there must is a point adjusting the scopes brightness on the scanning dot where more and less light from the focused image would effect the light from the scopes scan as a slide does ,but i suppose if it did work the dark areas of the focused image would be shown as bright since theres no light and the scopes scan line will show up brighter if it would work at all.
I was thinking since the scopes light is green mixing with a focused image of other colours cause a darker colour mix in the scopes light which might be able to be picked up if balanced .
I suppose the focused image brightness would effect head amp as an amount of light does for flying spot scanners and stop it working but most of these things are a balancing act to much or to little light from focused image or scanning line one or the other .
Just a crazy idea slides are hard enough.