Re: De-polarize light?


Charles Manoras wrote:
"Helmut Wabnig" wrote

Opticians use rotating ground glass to limit coherence length
Milk has to be fresh each morning, you know.

Ordinary and simple-minded opticians, yes. Jawohl.

Astute and ingenious opticians, no.

Anyway as explained I did switch to a colloidal solution
which lasts forever.

Milk is more easily available however.

A rotating ground glass does not work as well to get rid of
diffraction artefacts, takes more space, requires a motor, a
mount, a fixture etc.

Been there, done that.

Rotating diffusers, especially if you use a holographic diffuser, lose
only about half the light and also maintain polarization. If you have
too much light available colloids can do a good job.

Please visit my web site at www.richardfisher.com

.

Relevant Pages

  • Re: De-polarize light?
    ... Milk has to be fresh each morning, ... Ordinary and simple-minded opticians, yes. ... How does a colloid work at a diffraction limited focus of a few ... Rotating diffusers, especially if you use a holographic diffuser, lose ...
    (sci.optics)
  • Re: De-polarize light?
    ... Milk has to be fresh each morning, ... Ordinary and simple-minded opticians, yes. ... Astute and ingenious opticians, no. ...
    (sci.optics)