Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

B Lenses for laser

Tags:
  1. Jun 20, 2017 #1
    I want to make a laser to burn paper so if i use 2 or 3 convex lenses with a laser will it be helpful . Or can i use 1convex then 1 concave and then 1convex to make it
     
  2. jcsd
  3. Jun 20, 2017 #2
    Why would you use a concave one?
     
  4. Jun 20, 2017 #3

    berkeman

    User Avatar

    Staff: Mentor

    Welcome to the PF. :smile:

    You should probably just stick with using sunlight and a magnifying glass. A laser with enough power to start burning a spot on paper would cost many thousands of dollars. If you are in university, you may be able to ask the appropriate physics professor for a tour of the laser lab...
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted