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Old 04-17-2013, 01:54 PM #1
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Default Firefly thingy on Kickstarter

I hope it's okay for me to post a new thread as a newbie. This caught my eye on KS, wondering what a "passive cooling system" would entail.

Blue Laser Lamp- with passive cooling technology by Richard Redpath ? Kickstarter

And no--this is not my project. Just think it's pretty cool.

aaand I should have searched for kickstarter projects before posting. Where's the bag of shame emoticon?



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Old 04-17-2013, 02:23 PM #2
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Default Re: Firefly thingy on Kickstarter

i think its a stupid project, but lots of people will be dazzled by it.
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Old 04-17-2013, 02:42 PM #3
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Default Re: Firefly thingy on Kickstarter

$225,000 thats crazy!!! this this is a crazy idea! and dangerous and will never be able to be legally sold to because danger to your eyes.
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Old 04-17-2013, 03:43 PM #4
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Default Re: Firefly thingy on Kickstarter

This is ridiculous. Sad so many people supported it.
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Old 04-17-2013, 06:30 PM #5
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Default Re: Firefly thingy on Kickstarter

Blue Light Hazard.....???

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Old 04-17-2013, 06:38 PM #6
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Default Re: Firefly thingy on Kickstarter

Why all the hate in this thread? I thought it looked like a quite neat project. Don't know if they really need $200k, but whatever.

It's not harmful, they say that they plan to keep the total output less than 3 mW.

It's quite cheap, and that's pretty interesting. The "early bird" rewards was only $35, and I'm sure they still make a profit from them. How much do they pay for the diodes? I haven't seen 450nm diodes for less than $35 anywhere.
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Old 04-17-2013, 11:20 PM #7
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Default Re: Firefly thingy on Kickstarter

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Originally Posted by Grix View Post
Why all the hate in this thread? I thought it looked like a quite neat project. Don't know if they really need $200k, but whatever.

It's not harmful, they say that they plan to keep the total output less than 3 mW.

It's quite cheap, and that's pretty interesting. The "early bird" rewards was only $35, and I'm sure they still make a profit from them. How much do they pay for the diodes? I haven't seen 450nm diodes for less than $35 anywhere.
Lol lets do a murder fund and check what diode is in! Next thing you know we are harvesting fireflies instead of projectors

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Old 04-17-2013, 11:23 PM #8
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Default Re: Firefly thingy on Kickstarter

I think some of the hate (at least from me) is that they are probably hoping to make HUGE profits from something worth very little, i.e. the $250,000 benchmark.
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Old 04-17-2013, 11:26 PM #9
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Default Re: Firefly thingy on Kickstarter

Quote:
Originally Posted by frissonic View Post
...wondering what a "passive cooling system" would entail.
Iirc, a passive cooling system essentially means any method of cooling the diode that doesn't require the cooling medium to "do" anything. Passive cooling for lasers is exceptionally common in hand-held lasers, where a mass of thermally conductive material, generally Aluminum, Copper, or Brass, is placed into direct, or nearly so, thermal contact with the laser diode in order to passively pull heat away from the diode and radiate it into the laser's surroundings.

I hope that I answered your question, and that I just made sense. XD If not, just let me know and I can clarify.

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Old 04-18-2013, 01:49 AM #10
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Default Re: Firefly thingy on Kickstarter

Quote:
Originally Posted by Grix View Post
Why all the hate in this thread? I thought it looked like a quite neat project. Don't know if they really need $200k, but whatever.

It's not harmful, they say that they plan to keep the total output less than 3 mW.

It's quite cheap, and that's pretty interesting. The "early bird" rewards was only $35, and I'm sure they still make a profit from them. How much do they pay for the diodes? I haven't seen 450nm diodes for less than $35 anywhere.
Sure, each beam is less than 3mW, but what happens when a kid sticks their eye in the aperture? He actually said himself it's safe from 2 feet. We've been trying to get this guy shut down over at PL.

Passive cooling is just a wankword for a heatsink.
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Old 04-18-2013, 01:52 PM #11
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Default Re: Firefly thingy on Kickstarter

Quote:
Originally Posted by Things View Post
Sure, each beam is less than 3mW, but what happens when a kid sticks their eye in the aperture? He actually said himself it's safe from 2 feet. We've been trying to get this guy shut down over at PL.

Passive cooling is just a wankword for a heatsink.
I thought that would be the case. Nothing active involved ... just a hunk of metal dispersing the heat. Ha ha!

I thought it looked like a cool project, but yah ... the wording is off.
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Old 04-18-2013, 02:01 PM #12
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Default Re: Firefly thingy on Kickstarter

From the parts section:

"-my proprietary blue laser"

hmm...
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Old 04-18-2013, 06:52 PM #13
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Default Re: Firefly thingy on Kickstarter

I don't like it. Just looking at those beamshots tells me its far far more than 3mw max. I saw those pictures and said "Oh dear oh oh my!"

People will get hit with too much power as an inevitability. Just look at it!

Any way to report the project on kickstarter?

Selling a laser device without FDA compliance?
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Old 04-18-2013, 11:09 PM #14
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Default Re: Firefly thingy on Kickstarter

I agree that the project could stand to be stopped, for safety reasons, but as for the concern about the safety of it based on the appearance of the beams, it seems that fog may very well have been used for those photos. If not...oh dear indeed!

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Old 04-19-2013, 05:41 PM #15
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Default Re: Firefly thingy on Kickstarter

i have to say, my favorite picture is the one with laser beams shining on a child's face.
If you buy this for your kids, they'll never come to SEE you
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Old 04-20-2013, 09:45 AM #16
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Default Re: Firefly thingy on Kickstarter

While an interesting try for a new gadget, it's just not a great idea for mass consumption. Too many ways for injury to occur.

I wouldn't care if they made a wad of cash if it was something else that "truly" excited the vets here. With an angle that hadn't been thought of previously.
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