1.
Appl Opt
; 46(18): 3706-8, 2007 Jun 20.
Article
in English
| MEDLINE
| ID: mdl-17538665
ABSTRACT
A broadband-corrected optical telescope has been constructed from a photon sieve with five million holes. Through careful optimization of hole size, this "antihole" sieve has holes centered on the dark underlying Fresnel zones. The diffraction-limited performance of a 1 m focal-length, f/10 element is demonstrated with a view toward constructing large lightweight telescopes for space applications.