Luneburg Lenses: Understanding Diffraction, Spill-over and Focusing

[Jean Bickle]

Hi there!

I wonder if anyone could explain to me exactly how the optics of Luneburg lenses work? Are there any major losses due to diffraction, spill-over etc? Is it possible to focus just one image using this lens?

Thanks,

Jean

 

[physixlover]

Hi there!

I wonder if anyone could explain to me exactly how the optics of Luneburg lenses work? Are there any major losses due to diffraction, spill-over etc? Is it possible to focus just one image using this lens?

Thanks,

Jean

just google it u can find it
http://en.wikipedia.org/wiki/Luneburg_lens

 

[Jean Bickle]

Yes, I knew that. Was just wondering whether anyone could explain it in a few simple words.

Thanks anyway though!

Jean

 

[physixlover]

Hi jean ,sorting out your question,some nice pictures
this notes might be useful

 

[Jean Bickle]

Hi phsixlover,

Thanks for your help! The pdf you sent gives really good information and at just the right detail I wanted!

Thanks!

 

[alextx]

Here is a link to Luneburg lens/antenna animation

http://www.youtube.com/watch?v=aURuC4Ur84Q

https://www.youtube.com/watch?v=

Hemispherical Luneburg lens
http://www.youtube.com/watch?v=0F_9DgXhRHk&feature=related