$28.80 - 200mW 532nm Green Laser Pen (2*AAA) - Green Lasers
$27.09 - High-Power 200mW Red Laser Pen (Burns Match + Visible Beam Daytime) - Red Lasers
$29.68 - Focusable 200mW 405nm Burns Match + Money Detector Blue-Violet/Royal Purple Laser Pen (2*CR2) - Blue Lasers
Just received these from dealextreme, shipping took 4 weeks and it had a tracking number. The quality of all three lasers is quite good, considering the price.
Review of green: the description warned that these may be of inferior quality, being the cheapest in the "200 mW" range they sell. It is supposed to have no IR filter. From comparing with my older 35 mW WL green I'd say this one outputs 50 to 100 mW of green, which is very good value for money. However, it only does this with fresh batteries, going down to 5-30 mW after about 5 mins of zapping around. Beam diameter at aperture is about 1 mm.
My favourite of the three is the red (660nm): I've not had a focusable head before, it's good! This laser can burn at distance, lights matches at a couple of metres etc. Also you can defocus it to start with so the dot is less dangerous to look at. It is perfectly circular, diameter at aperture is about 4 mm, and you can move the focal point anywhere between about 2 cm to "infinity". The CR2 batteries seem to produce a very stable output.
The 405 is of the same design as the red, but disappoints visually. It can also burn (a bit less than the red). The "dot" is actually a rectangle, with a beam hardly visible even with smoke/fog. That is not the lasers's fault, just the wavelength being at the end of the visible spectrum. Considering the danger I wouldn't recommend getting one (or any 405).
$27.09 - High-Power 200mW Red Laser Pen (Burns Match + Visible Beam Daytime) - Red Lasers
$29.68 - Focusable 200mW 405nm Burns Match + Money Detector Blue-Violet/Royal Purple Laser Pen (2*CR2) - Blue Lasers
Just received these from dealextreme, shipping took 4 weeks and it had a tracking number. The quality of all three lasers is quite good, considering the price.
Review of green: the description warned that these may be of inferior quality, being the cheapest in the "200 mW" range they sell. It is supposed to have no IR filter. From comparing with my older 35 mW WL green I'd say this one outputs 50 to 100 mW of green, which is very good value for money. However, it only does this with fresh batteries, going down to 5-30 mW after about 5 mins of zapping around. Beam diameter at aperture is about 1 mm.
My favourite of the three is the red (660nm): I've not had a focusable head before, it's good! This laser can burn at distance, lights matches at a couple of metres etc. Also you can defocus it to start with so the dot is less dangerous to look at. It is perfectly circular, diameter at aperture is about 4 mm, and you can move the focal point anywhere between about 2 cm to "infinity". The CR2 batteries seem to produce a very stable output.
The 405 is of the same design as the red, but disappoints visually. It can also burn (a bit less than the red). The "dot" is actually a rectangle, with a beam hardly visible even with smoke/fog. That is not the lasers's fault, just the wavelength being at the end of the visible spectrum. Considering the danger I wouldn't recommend getting one (or any 405).
