3000mw Green Laser high quality
The use of 3000mw Green Laser has become widespread at Stanford University Campus and Medical Center at Stanford.
They are great and useful tools for educators in the classroom and at conventions and meetings, under the right circumstances. However, laser pointer can be personal property or Stanford property. Whether you use your own or one owned by Stanford you are still responsible for its safe use.
While the majority of the Laser Pointer for sale contain low to moderately powered diode lasers, more powerful lasers can be found on the market, usually imported from other countries. These pointers present a significant potential for eye injury and are often not properly labeled according to FDA regulations.
There are currently no restrictions for purchasing laser pointers in the United States. The FDA has issued a warning for laser pointers, urging that the pointers be used as intended, not as toys, and not by children unless under adult supervision.
Relatively inexpensive battery operated hand-held High power green laser pointers that are Class 3B (some Class 4) are now commercially available, which are well in excess of the 5mW legal limit for laser pointers.
These devices can be very dangerous. Some of these lasers emit green beams from frequency doubled Nd:YAG lasers operating at 532 nm and have emissions significantly exceeding the maximum permissible exposure (as per the ANSI laser standard, Z136).
One of the 50mw Green Laser has a filter in the cap, which, if removed, allows the laser to emit both 532 nm and 1064nm beams, in excess of 15 mW, making it an even more hazardous than class 3B.
The following guidelines must be understood and followed:
Below is a list of guidelines offered by SLAC: Laser pointers must be labeled with either a caution label used for Class 2 hazard and some Class 3R hazard laser pointers, or with a danger label used for some Class 3R laser pointers.
Those with a caution label are safer to use because the normal blink response of the eye when exposed to bright light is considered sufficient protection. However, they should be used with caution and never stared into.
Those with a danger label can cause temporary flash-blindness, after images and glare responses.Permanent damage is possible if the beam is stared into.Never point a laser pointer at a person.Laser pointers are not toys. Juveniles should not be allowed to use them unless adequately supervised.
If you misuse a laser pointer, does it turn into a "toy"?Why are there so many false statements about laser toys?
The main reason seems to be that the AAO, FDA and others such as medical journal authors are confused about general-purpose lasers being misused, versus lasers that are specifically built into or marketed as toys.
When a laser is misused by pointing it at another person, the AAO and FDA appear to be making an unsupported assumption that the person was "playing" with the laser as if it were a toy. They believe that simply pointing an ordinary laser pointer at a person somehow transforms the device into a "toy".
If this was true, then a common stick would be "marketed as a toy" or would be a "stick-containing toy" if it is poked at someone. Or to give another example, if a child used a screwdriver to poke at a playmate, then the screwdriver becomes a "toy." Of course, this is not the case. The stick remains a stick and the screwdriver remains a screwdriver, even if misused during children's' play.
This muddied thinking then leads to article headlines such as the AAO's Dec. 5 2013 press release, "High-Powered Handheld Blue Laser Toys Can Cause Serious Injuries." The AAO quoted doctors in Saudi Arabia as saying that these high-powered blue lasers were "often marketed as toys." Both the headline and the claim are not true. This is discussed in depth here; below is a summary of the key points:
The high-powered handheld blue lasers were not marketed as toys, at least not online, as far as we have been able to tell.The type of laser in question is sold through the Internet at around USD $300, which is substantially more expensive than most children's toys.
The Saudi doctors who made the claim have not yet provided any evidence for their statement about the marketing of these lasers. In fact, the Saudi doctors apparently did not do any market study or analysis to determine whether or how "often" these lasers were marketed as toys, if ever.
The Saudi doctors provided no evidence that the lasers were being used in a toy-like way. In each of the the six in-depth cases discussed, one person pointed a high-powered laser at another. But there is no specific indication of "playing" or toy-like behavior. Of the 14 reported Saudi eye injuries, only two were to persons defined as "children" — under the age of 14. The other twelve persons ranged from 15 to 30 years of age. Such "non-children" would have been exempt from any laser toy regulations which were proposed by FDA in August 2013.
In short, there were no "toys" in the study quoted by the AAO. The AAO took an unsupported claim of Saudi doctors, about marketing status of lasers in that country, and without further checking made this the basis of their Dec. 5 headline and story intended for U.S. media.
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