I got this (chinese) Small Sun ZY-850 green laser. It was said to be a 100 mw laser but after some google-research it tuned out to be only a 30 mw. O well, I thought, that's not bad either cause max 5 mw is allowed in Holland.
I'm pretty happy with it and at night the beam is clearly visible for aprox. 300 meters.
But I noticed that when you shine at a smooth surface you see a dot and something that apearse to be some sort of grid. Is that poor quality optics/lense or IR filter? I attached some pictures. :undecided: I shot one pic of the surface and two directly into the diode/beam with a very fast shutter time.
By the way, by using a screwdriver on that screwy-thing (pot?) you can make it brighter (and shorten your battery life!)?
Hope somebody knows....
I'm pretty happy with it and at night the beam is clearly visible for aprox. 300 meters.
But I noticed that when you shine at a smooth surface you see a dot and something that apearse to be some sort of grid. Is that poor quality optics/lense or IR filter? I attached some pictures. :undecided: I shot one pic of the surface and two directly into the diode/beam with a very fast shutter time.
By the way, by using a screwdriver on that screwy-thing (pot?) you can make it brighter (and shorten your battery life!)?
Hope somebody knows....