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I've been looking around for a 405nm laser pointer that is <5mW power. From what I've read, I thought visible wavelength was considred 400-700nm for laser specifications, so, if a 405nm laser had output power less than 5mW, then it was a Class IIIR (old-system IIIA).
However, every time I've asked of the specifications on the danger label for such a pointer, they always say, "405nm, <5mW, and Class IIIB."
Since I've always known a Class IIIB visible wavelength laser to be >=5mW and <500 mW, this seems mutually exclusive. I always assummed the manufacturer/seller didn't know what they were doing and I stayed away when they claimed both "<5mW" and "Class IIIB." But after several answers to this question as such, I'm beginning to wonder:
Is a 405nm laser an exception to the rule and considered Class IIIB even if the output power is less than 5mW?
However, every time I've asked of the specifications on the danger label for such a pointer, they always say, "405nm, <5mW, and Class IIIB."
Since I've always known a Class IIIB visible wavelength laser to be >=5mW and <500 mW, this seems mutually exclusive. I always assummed the manufacturer/seller didn't know what they were doing and I stayed away when they claimed both "<5mW" and "Class IIIB." But after several answers to this question as such, I'm beginning to wonder:
Is a 405nm laser an exception to the rule and considered Class IIIB even if the output power is less than 5mW?
