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#166822 - 02/10/09 06:57 AM Re: Could this be an alternative to the LASER flare? [Re: TomApple]
James_Van_Artsdalen Offline
Addict

Registered: 09/13/07
Posts: 449
Loc: Texas
Originally Posted By: TomApple

Using a 30mW green laser in the US may get you rescued, but it will also get you arrested

? If a 30 mW laser adheres to all of the FDA regulations I don't see them complaining. In any case 50 mW is where things begin getting risky for someone a few feet away, never mind a distant aircraft. You'd need several hundred *watts* (at least) to blind someone 37 miles away.

Quote:

Regarding LED lights, the Surefire G2 LED was easily visible over 20 miles away as its reflector made an easily seen luminous dot.

How well do the NVG cope with a full moon reflecting off waves?

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#166823 - 02/10/09 11:00 AM Re: Could this be an alternative to the LASER flare? [Re: James_Van_Artsdalen]
TomApple Offline
Journeyman

Registered: 09/05/06
Posts: 80
Loc: Suffolk, Va.
Originally Posted By: James_Van_Artsdalen
If a 30 mW laser adheres to all of the FDA regulations I don't see them complaining. In any case 50 mW is where things begin getting risky for someone a few feet away, never mind a distant aircraft. You'd need several hundred *watts* (at least) to blind someone 37 miles away.


A 30mW doesn't adhere to FDA regs. That's why the ad says it can't be imported into the US. The LaserFlare is 5mW. Anything over that is illegal.

Important FDA Warning for all >5mW Lasers: FDA advices all customers that these lasers may be purchased only if you are NOT a citizen of the United States and you are NOT currently living in the United States.


The laser flare has the added advantage of being waterproof (claimed) to 80 feet.

I don't doubt that sooner or later, someone is going to sell a cheaper version of the green LaserFlare. I don't know how comprehensive their patent is, but I'm positive that it will be put to the test in the not too distant future and you'll see surprisingly similar/identical products being sold.

Cheers,

Tom

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#166854 - 02/11/09 12:35 AM Re: Could this be an alternative to the LASER flare? [Re: TomApple]
scafool Offline
Pooh-Bah

Registered: 12/18/08
Posts: 1534
Loc: Muskoka
Originally Posted By: TomApple
Originally Posted By: James_Van_Artsdalen
If a 30 mW laser adheres to all of the FDA regulations I don't see them complaining. In any case 50 mW is where things begin getting risky for someone a few feet away, never mind a distant aircraft. You'd need several hundred *watts* (at least) to blind someone 37 miles away.


A 30mW doesn't adhere to FDA regs. That's why the ad says it can't be imported into the US. The LaserFlare is 5mW. Anything over that is illegal.

Important FDA Warning for all >5mW Lasers: FDA advices all customers that these lasers may be purchased only if you are NOT a citizen of the United States and you are NOT currently living in the United States.


The laser flare has the added advantage of being waterproof (claimed) to 80 feet.

I don't doubt that sooner or later, someone is going to sell a cheaper version of the green LaserFlare. I don't know how comprehensive their patent is, but I'm positive that it will be put to the test in the not too distant future and you'll see surprisingly similar/identical products being sold.

Cheers,

Tom

Well they would have to save me before they could haul my bones into court, and at that point I guess I could argue that it was done to save my life.
If it is a real survival situation them a lawsuit would be a welcome opportunity.
_________________________
May set off to explore without any sense of direction or how to return.

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#166865 - 02/11/09 03:52 AM Re: Could this be an alternative to the LASER flare? [Re: TomApple]
James_Van_Artsdalen Offline
Addict

Registered: 09/13/07
Posts: 449
Loc: Texas
Originally Posted By: TomApple
Anything over [5mW] is illegal.

Not true at all! The rules require additional safety mechanisms (exit cover, lock, etc) above 5 mW but if present it's perfectly legal. I made my 175 mW "pointer" legal a while back for about $15 and a little extra length for the lock.

I don't think a single DX laser complies with the above-5mW rules, hence the warning. In the past many were found to not filter infrared at all(!) hence my warning they can be hazardous.

(the 175 mW greenie would be useless as a rescue laser as it's far too powerful)

A red Greatlands is a diode laser and inherently more rugged the the green laser, which is a DPSS and therefore more fragile. Both have a focusing optic and won't be quite as durable as an LED flashlight.

I could not find a reference at Greatlands web site as to whether the red Flare is a 650nm laser or 635nm laser. 650nm would be a lot cheaper; 635nm is 3x as visible to the human eye. NV goggles probably don't care.

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