Super-Continuum White Laser - 460nm to IR

[Greyfox]

Sorry, I have to pop the dream balloon here.
Having looked into the requirements for developing a laser-driven raster display, I'll post the skinny of my discovery here:

The downside is handling the servos, the servo driver, and the data processing for something like that. It may be possible, but even running a simple display of a 320x240 raster image at 24 frames per second (The eye can distinguish 25fps), in monochrome, requires a positioning rate of about 2MHz. The raw data for DVD alone would send that to a rate of 250MHz!
I have yet to see a servo system capable of keeping position at that kind of a rate.

I'm thinking we'll have to wait until the technology to bend coherent light by way of magnetic fields becomes readily available. After all, we were close to that with CRTs.

 

[pseudonomen137]

There are up and coming full color laser movie/picture projection technologies in the works, and even Pangolin can handle small ones. You're right that servos would be too slow for a 320x240 video, but by scanning across one axis with a fast rotating polygonal mirror (at which point the other axis can be slow enough to be handled by a standard galvo), I don't see anything standing in the way besides the money and time to get such a product up and on the market.

 

[Greyfox]

I hadn't thought of doing it that way. A positioning rate of 6k to 15k on a good galvo isn't too much to ask. Handling the blanking at the full speed would still be an issue, however. You'd still have the full 2MHz or 250MHz. It would probably require use of laser modulation to properly account for that, but that's already been achieved for fiber optic lines. Good thinking!