The primary culprit was overpowered units. The Code of Federal Regulations in the United States limits commercial class IIIa lasers to 5 milliwatts (mW). And yes, Laser Pen Shops above 5 mW are commercially available in the United States, but it is illegal to market them as Class IIIa devices. Some units in the NIST study tested as high as 13 times over the legal limit at 66.5 mW. For context, many military grade rifle mounted lasers are rated at 50 mW.There are tons of people out there selling green lasers, and lots of horror stories. I chose Beam of Light Technologies because they’ve been in business for more than five years – I know this because I found a couple of negative reviews of them online from that long ago. But I found no recent bad reviews, and they were still in business. I’m perfectly satisfied with the product and with their service, although one could argue that when everything goes well, you haven’t really tested their service.
Output power: If the 20mW Green laser Pointer Pen is more than 5 mW, it can damage human eyes permanently, that’s the reason that laser pointer needs to be under 5 mW.
However, even if under 5 mW it can still be harmful if people directly point the laser into a person’s eye over 0.25 second. Therefore, FDA has a strict rule for product label: It must have four types of information on permanent-stick labels that must be put on all laser products such as laser pointers, remote presenter, laser gun sights, etc. The label needs to include the following: aperture indication, warning mark with laser wavelength/output level information, manufacturer name and address and production date. FDA has a standard format that needs to be followed.
All laser products manufacturers need to apply for AND receive an Accession Number from the FDA before they are allowed to import lasers into the US market. Each model needs its own independent Accession Number — you are not allowed to use the same same Accession Number for different models, even if they only have a small change.
Green laser pointers are significantly brighter (about 60 times) than a 5000mw green laser and because of its unusual color it is much more noticeable. Just about everyone has a red laser pointer, but we’re pretty sure you want to own the very best – and doing it with a green beam laser is the way to go.I got the Spartan 200mw green laser, I have to say I was impressed by how powerful it really was without the need of magnification. It can burn a hole in a piece of paper with a fully charged battery like a needle through cotton. The only downside is it has a very limited battery life.
A 532 nm green laser wavelength is obviously superior to a laughable 650 nm red laser wavelength. And unlike a red laser, the green beam itself can be seen in mid-air in dark conditions, not just the laser beam dot. This allows the green laser pointer to be used for pointing to star constellations (skypointing) and also just generally look cool as hell. The green laser beam dot can be seen at much greater distances than with a Laser Pointer Blue 30000mw .The Dragon Lasers green laser pointers are classics with unrivalled class, sophistication and sheer power. No other laser combines a stunning and compact sized case with a brilliant green beam that goes for miles, burst balloons and light matches. A must have for all laser hobbyists..
lasersing 