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    3 watt 445nm lens focus

    Thank you for the safety advice Ricker, I will be sure to use my glasses at all times. I've noticed that these lasers can be very dangerous and eye protection is a must! As far as the laser door is concerned, I have no detailed plans. However, I noticed the beam can be routed different...
  2. A

    3 watt 445nm lens focus

    Hello all, Im a newby to the laser world and recently built a 3 watt 445nm setup. I have a g2 lense and noticed that the beam goes from a pinpoint to a rectangular shape as distance increases. Is there a way to keep the beam at a pinpoint regardless of distance? I am willing to purchase...