Home Video Asylum

TVs, VCRs, DVD players, Home Theater systems and more.

Re: why no laser beam projection TVs?

207.174.192.46

From my somewhat limited background in laser technology...

The color issues could be overcome. The big issue is controlling the beam. Getting the beams to pass the screen over 15,000 times a second (just to start with) is dificult. The trick with tubes is that relitively simple magnetics can redirect a beam of electrons before it hits the phosphor. With lasers, you have a raw light source. Ever try bending light with amagnet? Redirecting a beam of light is easy with mirrors, but not at the scan rates required for video display.

I've been trying to dream up a way to do it for years.




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