Jump to content

Laser into diverging lens... [optics]


Externet

Recommended Posts

3 hours ago, Externet said:

What is the difference between (same wavelenght)  LED light and a laser light exiting a diverging lens ?

If you could get an LED that produced such as narrow range of wavelengths as a laser does, there wouldn't be much difference.

Link to comment
Share on other sites

The same difference that was present before the lens. 

You have to be more specific. Do the sources have the same charateristics with regard to e.g beam divergence? What does "same wavelength" mean? The center wavelength? The frequency linewidth? Lasers are generally much narrower than LEDs (tens of MHz or even better, vs nm for an LED, which would mean THz) so you would get lesser chromatic effects with a laser.

Link to comment
Share on other sites

11 hours ago, swansont said:

The ones that lase are called lasers.

My catalogue call them laser diodes, perhaps because they are also diodes.

10 hours ago, John Cuthber said:

How did you come to the conclusion that  there was a "Z" in that?

I seem to remember the verb had a z in it when I last heard it, but I like to spread my bounty evenly and fairly between letters.

 

:)

 

Link to comment
Share on other sites

  • 1 month later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.