I bought a 200mW green from China Vasion just now. It will take 5-20 days before it arrives. I will test it and feed back at this forum. I payed €30 + €7 in shipping. It was so cheap, so I couldn't help it
Vidar
Yesterday I recieved my 200mW green laser from Chinavasion. It came in a wet cardboard package - someone have probably dropped it in a small pond. The laser was pretty wet too. Anyway, I tested it right out of the box, and found that it was dew on the lens. I did not touch the lens, but it is very easy to diassamble the apperture, so I took it out and let it dry. Works perfect now.
The beam is very bright compared to a 5mW, and it stings when I test it on my skin. The reflective appearence when shining on a black printed paper is similar to a 5mW on white paper. The beam easily lit matches when focused at 2 feet distance, and closer. Melts black and red plastics - also when not focused.
The laser is not IR filtered, so some 808nm are visible when using red protection glasses. However, the red light are focused on a very short distance, and spreads quite much. 808nm is also partially absorbed by the yag chrystal, and it also goes through the spread lens (beam expander) before it is collimated. So relatively very little 808nm light comes out of the apperture.
The green dot have a size of about 2 inch diameter at 150 feet, but can maintain small dot size at 25 - 30 feet when focused at that distance.
The build quality seems OK. Massive aluminium, safety key, and a metal press button. The adjustable focus are easy to operate. However, there is some slack between the end cap and the adjustment ring, so focus is hard to maintain 100%. I have therfor placed a small rubber gasket in order to tighten up the slack. Now the laser works perfect.
