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You can get ones made of glow-in-the-dark plastic, but the glow goes after an hour or so out of the light.
My idea combines a very low frequency (0.3 ~ 0.1HZ) IC flashing low wattage LED where the plastic cap is made of glow in the dark plastic. That should produce an interest effect and a persistent
glow, and yet not drain battery powered devices too quickly.
The idea is particularly useful on things you need to find in the dark: flashlights, key chains, smoke hoods, buttons, etc.
The system is simple, small, cheap, uses proven technology and requires no clever circuitry or re-engineering to adapt existing products.
UV LED
http://members.misty.com/don/ledbl.html
[Worldgineer, Oct 04 2004]
[link]
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I voted for, but I have to wonder what it would be like staying in room with a bunch of this stuff. |
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Make children's toys and women's shoes with this feature and there will be a lot fewer nighttime injuries in the world. |
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Hey guys, good to see ya. |
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(waves)
(admires trailing effect of glow-in-the-dark LED ring) |
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My question is what is it in the glow-in-the-dark plastic that makes it glow? I know that phosphorescent items take the UV radiation and release visible variation. If glow-in-the-dark does the same thing, then the LED would not put out enough UV radiation to light up the GITD item. |
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Even if that's true (I have no idea), they make LEDs that have UV output. |
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I have two of those UV LEDs. They're marketed as keychain money detectors. |
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I put a glow in the dark keychain under
my shortwave UV lamp and instead of
the eerie green glow I got an eerie
orange glow. |
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Nice idea, it should work. + |
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