BluRay Lumia?

[swamidog]

Apologies if this sort of thing has been discussed to death...

My friends and I throw yearly gatherings in South Western desert as a sort of homecoming/art/music festival. I've been building little laser and led widgets to add to the ambience, but this year the theme is "A Feast of Lights" so I really want to ramp things up.

One of the things I'm toying with is putting together a bluray lumia wheel that projects onto a large surface that's been treated with overlapping colors of glow in the dark paint. Before I sink a lot of time and budget into the project, I wanted to get some feedback and hear from people who have tried this or can offer suggestions so I can learn from their mistakes instead of mine.

I've got a projection distance of about twenty feet and am planning on setting up the screen and projector so the lowest edge is about 10' (3 meters) in the air. I have laser experience and am very much about eye safety.

I've ordered some bluray modules in and will be ordering some flexmods to drive them. One of my concerns is they're going to be running for maybe three or four hours at a time so I want to drive them with a low enough current and keep them cool so they don't burn out on me. Since I'm hitting glow paint with them, I don't imagine I need a ton of output power.

Any thoughts, suggestions?

[heroic]

I have a small spirograph that I fire into a piece of granite effect glass. I have run it for ten hours or so at a stretch at ~ 100 mW optical output, and it still seems to be going fine. It's the diode from a 4x blu-ray burner, whatever that means.

[shrad]

just keep the speed low ^^ the see-in-the-dark paints tend to fluoresce long ^^

you may also use some fluo pencils ripped off for their ink cartridges, which will glow orange, rose, green and yellow, and some glass cleaning liquid which will glow intense blue

it serves to make a little TEA and test some dyes

[swamidog]

just keep the speed low ^^ the see-in-the-dark paints tend to fluoresce long ^^

you may also use some fluo pencils ripped off for their ink cartridges, which will glow orange, rose, green and yellow, and some glass cleaning liquid which will glow intense blue

it serves to make a little TEA and test some dyes

That's one of my concerns. I don't want to just totally saturate the projection surface and end up with a big glowing blob. I've got a 3 rpm motor which should be a reasonable speed.

One thing I'm thinking about is the difference between the old school shorter phosphor Zinc sulfide:copper and the new Strontium aluminate:europium. In this case, the short phosphor would be desirable.

As soon as my diodes come in, I'll do some tests. If there's interest I'll post them in this thread.

[sugeek]

I have tried this a bit, try rear projection to the screen. The blue-ray should be able to penetrate the screen We had good luck with just florescent paint on a banner (just gave it a try and it worked well). This way worked well for me even projecting onto a thick canvas banner from the rear (the greens lit up blue).

-Adam

[swamidog]

I have tried this a bit, try rear projection to the screen. The blue-ray should be able to penetrate the screen We had good luck with just florescent paint on a banner (just gave it a try and it worked well). This way worked well for me even projecting onto a thick canvas banner from the rear (the greens lit up blue).

-Adam

I thought about doing rear project as it would be easier to keep things eye safe, but it turns out I'm just not going to have the space to set up anything behind the screen. I'm going to have to make a light weight and rigid screen. Most likely masonite.

Were you just using florescent paint, or did you try glow paint? I'm shooting for glowing trails on the screen, much like you would see on a slow phosphor monitor.

[seanharrison]

I can't wait to see the photos of how this is going to look :-) Sounds Awesome!!!

[swamidog]

I can't wait to see the photos of how this is going to look :-) Sounds Awesome!!!

Thanks!

I'm expected the glow paint sample to arrive today and I should have some tests sometime next week. I'll shoot some footage and post updates here so anyone can follow my progress.

I spent some time the other night putting 532nm through the lumia wheel and it looked great. I've got a .5rpm motor, but I think I'm going to throw a little potentiometer on it so I can fine tune the speed.

Thanks to the drlava's chart, I'm going to drive the ggw 6x at ~120ma for roughly 100mw of light and I'm shooting for a projection size of about 8'x8'.

[swamidog]

Here's a quick a dirty video of the first tests of the BluRay lumia projector on glow paint.

http://www.youtube.com/watch?v=6b9NB6kSbkE

[p1t8ull]

looks superb, well done