As a previous reviewer mentioned, this laser was a little disappointing when first turned on. This pointer produces a spot which is dimmer than a class II (<1 mW) red laser pointer when shone on a white wall in a dark room from 45 feet away. The decreased sensitivity of the human eye to this wavelength is somewhat misleading though. You begin to appreciate this more if you shine it on something which will fluoresce. Flurorescent yellows, greens, orange, etc yield amazingly bright spots. Glow in the dark objects are quite responsive as well.
The buyer must understand this is not going to be a cool presentation pointer. The spot is simply too dim to be useful in anything but the darkest room with very dark slides.
In the end, it's a decent price for a compact violet laser, so long as your expectations are realistic. 10mW Blue Violet Laser Presentation Pointer
When I first received this in the mail, I was a bit let down.
Against a white wall it's not nearly as bright as the green 5mW pointer, but if you shine it at an object that has phosphorus, or other fluorescence chemicals in it, it'll glow a bright blue.
Since it's a UV emitter, it works like a black light on day-glow objects. It's in the UV-A range, which isn't as harmful as UV-B radiation.
An InGaN laser emits 405 nm directly without a frequency doubler such as the 473nm blue and 532nm green lasers, which means that accidental dangerous infrared emission is impossible.
Don't shine it at "Transitions" eyeglasses, it'll leave a mark that lasts for about an hour or two.
Overall, it's worth the price.
Cool color, poor quality beam though. Beam was real fuzzy and actually kinda made me dizzy looking at it. Wasn't at all happy with this item. Seller however did accept it back and, at my request, credited me toward another item, them refunded the difference. GREAT SELLER, not so great item. I WANT TO REITERATE THIS THOUGH, EVERY OTHER LASER POINTER I PUCHASED FROM THIS SELLER WAS FLAWLESS AND WORKS AS EXPECTED! This particular one just seemed out of focus, if that is even possible with a laser.
I bought this laser, even after reading some of the bad reviews. true, the laser isn't all that bright, but that's only because it's in the violet range (which the eye is not as sensitive to).
Still, I can see a faint beam in a totally dark room. I can hit a stop sign about a 1/4 mile away. I can use it for presentation purposes (that's the main reason I bought it). The coolest feature is how it will light up florescent and glow in the dark objects. My kid has glow in the dark stars on her ceiling, and after shining the laser and activating the glow in the dark material, the glow stars shone so bright that I could read the time off my watch without any other lights.
Seriously, we all know violet doesn't show up as well, but this is still very awesome. How many people have a violet laser pointer? And the glow in the dark writing is the best!
As other reviewers have mentioned, even at 10mW, this laser does not appear very bright on many surfaces. This is due to the fact that 405nm is on the edge of the visible light spectrum.
Nonetheless, the color is similar to what a blacklight produces. It is a very unique violet color that cannot be accurately captured with a camera (it will look very different through your camera than with your eyes). It appears slightly blurred at a distance (as if the eyes cannot focus on the point), and you can't see it very well on a 'normal' surface in a bright room.
But, if you shine it at certain surfaces (such as the inside of the case it comes in) the dot will glow a very bright blue. Essentially, anything that glows under a blacklight will do some cool stuff when the light from this laser hits it.
Glow in the dark materials will instantly light up where the laser light hits them. CRT TVs also do some cool stuff in dark rooms.
Despite the fact that the violet wavelength is hard to see, it is entirely possible to see a faint representation of the laser beam on a dark night or in a dark room.
Overall, I highly recommend it. 405nm violet-colored lasers are still relatively new technology and, as everyone gets green lasers, you can be even cooler with a violet laser.
Each laser color has specific uses.
Red lasers are great for presentations, they're cheap, and not too bright, but can be seen well on a white wall.
Green lasers are good for use outdoors for presentations, or for pointing at stars in the sky (since you can see the beam easily).
Violet lasers produce light that is on the edge of the visible light spectrum. They can do some neat things with certain materials, especially glow in the dark materials.
Only problem I had (unrelated to the item itself) was the shipping. It never arrived the first time with super saver shipping (I never figured out what happened, the post office wouldn't look it up for me); but Amazon completely refunded the order. The second time, I just used standard shipping, and the postal service actually got it to the right place.
But, that doesn't stop me from giving the laser 5/5! - Laser Pointers - Blue - Laser - Violet'
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