Light painting with lasers

Fade Out is a system of "painting" an image on a photoluminescent surface with lasers. It was developed by Daito Manabe and Motoi Ishibashi and can create different shades of green depending on the timing of the laser. Check out the video below to see what I mean. The source image from the webcam is used for the image that's put on the wall.

via pinktentacle

Picture of Light painting with lasers
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don_naked7 years ago
the coolest things with a laser, awesome
Skyriam7 years ago
This is by far one of the coolest most impressive things I've ever come acrossed, the engineering and intelligence behind this is amazing, awesome work! Keep it up, take care.
jeff-o7 years ago
This is way better than having people stand in front of a phosphor-coated wall and shining a flashlight on them to leave a shadow.

Yep, way better.
kelseymh jeff-o7 years ago
Or having people sit in front of a phosphor-coated glass panel while an electron beam on the other side is aimed more or less at their brains....
jeff-o kelseymh7 years ago
Ah, good times. Can't say I miss my old tv, though.
kelseymh7 years ago
That is really fascinating! There is some really interesting physics and signal processing calculations going on behind the scenes.

I wonder how closely they had to measure and model the phosphor decay --- do they assume a single exponential, or more complex multi-constant behaviour?

What about saturation effects, in particular with overlapping time-delayed pixels?

And why did they decide to go with hollow-box pixels rather than simple round (defocused) spots?
bobbym5297 years ago
Very cool!