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  1. Nutball

    Techhood are incompetent imbeciles, I cannot do business with.

    What color is it? I'd complain to the seller, probably a mixed up order.
  2. Nutball

    How Much Laser Power Gets Through Goggles

    I'll be more careful in the future, but I was trying to point out that the lenses were green by just calling them green goggles when asked if they were full spectrum goggles, which they are not. I just said "green goggles" not "green laser goggles", but I see how it could be confusing.
  3. Nutball

    Enchanted Beams Thread

    10-30 second open shutter with one laser turned on at different times. Varying the duration makes it look like different laser powers. I was testing, trying to set the laser back to infinity after burning with it.
  4. Nutball

    Enchanted Beams Thread

    Not much of a camera, but I hope these are good enough
  5. Nutball

    574nm 36 mW Yellow Laser

    So yes, big sensor, and CMOS. Cool I was right. It's fun figuring stuff out
  6. Nutball

    574nm 36 mW Yellow Laser

    My first impression of the pic in post #1 with the reflections in the lens was a reflection off the sensor. I want to guess a CMOS because there are no lines, CCD tends to overload with vertical pink lines, though the dots are pink. I also have to assume it's a big & low resolution camera, or an...
  7. Nutball

    How Much Laser Power Gets Through Goggles

    Guess I shoulda got dark red. I have used my eclipse glasses when trying to light a black match with my green laser to see if it could. It was hard to keep the laser on the match it was so dark. It looks like <1mW gets through them. They do burn easy. The laser wasn't aimed at the camera...
  8. Nutball

    How Much Laser Power Gets Through Goggles

    I have burned my glasses before, but that was when I focused the 650nm 250mW to 3" distance to see if I could burn them. It just left some tiny surface melt marks
  9. Nutball

    How Much Laser Power Gets Through Goggles

    I think my greens were for 650,638, & 405 if I remember correctly. They look just like a red pair I just ordered on ebay to block 532nm. EDIT: I just checked Sanwu's website. These red and green goggles reduce power by a supposed factor of 1000. So, only a max of 0.25mW of red should get...
  10. Nutball

    How Much Laser Power Gets Through Goggles

    In my pic are Green goggles from Sanwu. They have the look of a cheap chinese standard for laser goggles. They do a good job of blocking red, but as you can see, I'd guess up to around 5mW still gets through. Not bad, but what if a 1W red hits it?
  11. Nutball

    How Much Laser Power Gets Through Goggles

    I have always wondered how much laser power can get through Goggles. Just out of plain curiosity, and also perhaps for more practical applications. Even knowing the answer may help others be more cautious even when wearing goggles if a lot can get through. Anyway I thought it would be nice to...
  12. Nutball

    Advice on safe laser

    I don't know much on the matter, but I'd think you could find a way to add a resistor somehow to limit the power to what you want. Even if it starts at 100mW, why couldn't a resistor bring it down to 5mW?
  13. Nutball

    I need help repairing this red laser pointer

    Don't forget to tell us how powerful it is
  14. Nutball

    Advice on safe laser

    My high school had a projector remote with a <1mw red. And boy was it dim. Cat toys are usually <2mw. Anyway, I figure if you could find a .5-2mW green, that outta be pretty safe and bright enough. I recently got my first green laser from a member here, who I think still has some pen lasers for...
  15. Nutball

    Is it me or is this graph wrong?

    Well it's a start. You just multiply the power by the fraction of cm2 area that the beam takes up.
  16. Nutball

    Is it me or is this graph wrong?

    Is it me or is this graph wrong? It looks like it is reversed since exposure time is increasing with power. If it is wrong, hopefully one of you computer and wikipedia savvy people could fix it. Its the first graph on the Laser Safety page https://en.wikipedia.org/wiki/Laser_safety. I'm guessing...
  17. Nutball

    Green laser lighting orange plastics

    I got yellow or orange off pink fabric. I've also gotten yellow too, but never red I don't think.
  18. Nutball

    Sanwu RGB review

    You can really see the misalignment from the side angle shots. It looked really good from a more inline view (user's perspective) in some of the very first pics in this thread. It does look like a Star Trek tractor beam though. I'm the type where if I see something good, I usually don't mention...
  19. Nutball

    Green laser lighting orange plastics

    Yea, I'm working on it. It happens with oranges that respond at least slightly to UV, but not all. Fabric, plastic, optic fibers... Picture of a streak over fluorescent pink tape which fluoresces oranges with UV and 532nm Plastic knob DVD case Old lava lamp with slightly yellow orange...


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