Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

How to Register on LPF | LPF Donations

Search results

  1. V

    best cheap laser?

    hey all I'm looking for a strong cheap laser for a friend of mine. A long time ago i bought such a laser for around $15, they were being recommended around here at the time. I'd like to find that laser again or a similar one, if i remember right they were putting out around 50mw. Its a litter...
  2. V

    Anyone have the budgetgadgets 200mw?

    $31.74 Focusable Violet/Blue Beam Laser Pointer Pen Flashlight 50mW/100mW/150mW/200mW - BudgetGadgets.com Im considering buying it and a lpm but if many people say they tested it underspec Ill get the rayfoss or olike version of this host. Ive only seen one guy that has this and he was happy
  3. V

    Dot size at 100+m?

    Just curious how big the dot would be. I get the feeling it will be a large bar but if anyone has a picture or can at least confirm that would be cool tia
  4. V

    Beam is brighter reflected off mirror?

    Tonight I noticed that the beam is brighter and slightly larger after reflected off my bathroom mirror. Ill take a pic with my crappy camera and try to get the effect captured if no one else can replicate but I was wondering why is this? EDIT: I think I just realized why, as I was looking in...
  5. V

    200mW of red is equivalent to how much green?

    Im considering buying a 200mW 650nm and was wondering how visible the beam would be, I have a ~20mW 532 and a ~50mW 405. Obviously the green is my most visible so I was wondering how red compares to green. Thanks
  6. V

    Noob question about calculating output power?

    I know it sounds dumb but I think im missing something. If P=IV then a 3.5V battery running 600mA would put out 1785mW assuming 85% driver efficiency. But this is not the case right? So is there a diode inefficiency as well or am i missing something?


Back
Top