Fecha Agregada: 04/25/2014 con J***r
I chose this to be my violet laser because all the other designs, and across several sites, were not very attractive shell designs(boring). I wanted a 300mw, because I wanted it to be the same brightness as my 50mw green laser (green light appears 6x brighter than violet to the human eye), and I did not want to spend $300usd 300-500mw to get the cool shell.
This laser has a much less quality beam, because the "dot" is quite large right next to the laser, which is about 1/2cm by 3/4cm dot, so it is not circular either. The main point about the beam, is it is not close to a parallel beam, this means that the beam gets much wider with distance. I didn't get a focus-able laser because I knew I'd never get it back to near parallel, but this is much less parallel than I could manually set, I am unsure if I can change the lens setting, seems to be glued. I might attempt to put an external lens on it to set it straight.
This thing is a burning laser, but only when focused. I cannot burn a black plastic trash bag on the normal large beam in any stretch of time, the beam is just too big. After focused with a lens, it instantly makes a clean hole in the bag, so I can afford to go a bit faster. This also makes instant engravings in hard plastics or wood when focused (instant as in not having to wait on it to burn a hole, by the way). Looking at the reflected beam dot when the dot is focused will hurt if not using eye protection, but should not hurt your eye to look at the beam dot when unfocused (remember, eye is less sensitive to violet).
The reason I wanted this to be as bright as my 50mw green laser is because I wanted nighttime visible beam!! So cool! This will sting bare skin unfocused in a time period of 2-25 seconds (depending on skin tone). My 50mw green laser cannot burn anything when focused and I cannot feel the any warmth from an unfocused, although small, beam (let alone sting).
Other thoughts:
Battery lasts a long time.
This is smaller than I expected, which is a good thing, and looks MUCH cooler in person.
This does not come with kaleidoscope/dispersion caps, but it has threads to put them on, its just Very hard to screw it on since the attacked head (the ring of plastic around the front/exit-hole of the laser) makes it hard to fit my fingers in there to screw it on.
Summery: get this as a minimum milliwatt for a clear[defined] visible beam when dark, and low enough brightness so you can look at the reflected dot with naked eye (annoying having to wear glasses every time one turns it on, I use the glasses when I am doing something of greater risk of a reflection, I am taking a personal risk by doing this, I treat it like a BB gun (as in gun safety), because it will not do damage unless it hits the eye but will then cause MAJOR damage, like a BB gun.
I recommend this product.
Pros:
Power and cool for cheap ($40 over $300-$500),
dispersion/kaleidoscopic threads,
small size,
burning,
visible mid-air beam in dark,
Cons:
hard to attach kaleidoscopic caps,
sacrifice on beam quality
less quality clip(like a pen has a clip for a pocket)
unfocusable (can use external lens though)