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Old 04-10-2008, 01:39 PM #1
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Default proof of concept: cheap laser protection + pics

Hi guys. Some people say this is a waste of time/ money and others say this provides some protection for by standers.

Anyway here is a DX 'True' 5mW which looks brighter than a 5 and is more like 8mW.

All the dark shots are in the same brightness which is a sort of dusk effect.

NO overexposure on any shot and all done in same lighting ( I also did this in daylight but couldnt see the green, I also for control did it with the green part of the glasses negligible brightness difference.)

No 3D glasses:
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Old 04-10-2008, 01:41 PM #2
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Default Re: 3D goggles for green laser + pics

With red part of one pair of 3Dglasses:

as you can see there is a HUGE decrease in the amount of green light getting through.

It looks much less bright than a <1mW red.
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Old 04-10-2008, 01:42 PM #3
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Default Re: 3D goggles for green laser + pics

Enhanced and magnified X15
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Old 04-10-2008, 01:46 PM #4
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Default Re: 3D goggles for green laser + pics

Can anyone explain why a DOUBLE layer of these glasses would not protect somebodies eyes?

I would be happy to look into this with a double layer (but I'm not going to just in case :P lol).

No photos of double layer, but dot is not visibe to naked eye.
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Old 04-13-2008, 06:59 AM #5
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Default Re: proof of concept: cheap laser protection + pic

The higher power green lasers would melt right through the film. This might work for <100mW (Ideally 70mW max), but I value my eyesight too much not to spend $60 on a pair of high quality OD 2+ glasses.
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Old 04-13-2008, 08:18 AM #6
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Default Re: proof of concept: cheap laser protection + pic

Quote:
Originally Posted by iewed
The higher power green lasers would melt right through the film. This might work for <100mW (Ideally 70mW max), but I value my eyesight too much not to spend $60 on a pair of high quality OD 2+ glasses.
It's going to take awhile to melt through the film. Do you plan on looking right into a 300mw green for a minute or something?
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Old 04-13-2008, 08:48 AM #7
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Default Re: proof of concept: cheap laser protection + pic

exactly, this is for brief exposures at a distance, not point blank for 30 seconds....
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Old 04-13-2008, 10:49 AM #8
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Default Re: proof of concept: cheap laser protection + pic

Even my underpowered DX 30 melts that stuff instantly. We keep saying this. It would only be safe if there was 0% chance of direct exposure, but this is NEVER the case when using a laser. Not safe. It may make viewing comfortable but will NOT save you from a direct hit.
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Old 04-13-2008, 11:15 AM #9
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Default Re: proof of concept: cheap laser protection + pic

how can it melt this stuff? I cant comprehend that happening... :-/
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Old 04-13-2008, 01:33 PM #10
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Default Re: proof of concept: cheap laser protection + pic

...
It's frippin thin cellophane. It tears through it like a blowtorch.
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Old 04-13-2008, 02:36 PM #11
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Default Re: proof of concept: cheap laser protection + pic

From a minute exposure? it's a wonder we don't see more videos of it done.
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Old 04-13-2008, 04:25 PM #12
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Default Re: proof of concept: cheap laser protection + pic

I still don't think it's worth risking your eyes. I don't know a whole lot about the subject, but there's also the concern of the dye burning/getting disorted. And regardless of how much light you see, there's no real proof without power readings.
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Old 04-14-2008, 12:17 AM #13
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Default Re: proof of concept: cheap laser protection + pic

Two layers of that block as much light as my od5 goggles, only problem is that even partial reflections of my x93(its average power :P) make it start to deform and melt.

...lazer... ;D ;D ;D
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Old 04-14-2008, 12:57 AM #14
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Default Re: proof of concept: cheap laser protection + pic

Exactly. Not safe with direct exposure. And there is always a chance of direct exposure.
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Old 04-14-2008, 01:14 AM #15
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Default Re: proof of concept: cheap laser protection + pic

please read this:
http://www.laserpointerforums.com/fo...=1196383728/#6
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Old 04-14-2008, 04:57 PM #16
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Default Re: proof of concept: cheap laser protection + pic

lol ok so ill find a material with same OD as the goggles but with a higher melting point.

What do you guys think about some sort of acrylic see through red?
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