Fresnel imager
id:
fresnel-imager-287-6818856
title:
Fresnel imager
text:
A Fresnel imager is a proposed ultra-lightweight design for a space telescope that uses a Fresnel array as primary optics instead of a typical lens. It focuses light with a thin opaque foil sheet punched with specially shaped holes, thus focusing light on a certain point by using the phenomenon of diffraction. Such patterned sheets, called Fresnel zone plates, have long been used for focusing laser beams, but have so far not been used for astronomy. No optical material is involved in the focusin
brand slug:
wiki
category slug:
encyclopedia
description:
Proposed ultra-lightweight design for a space telescope
original url:
https://en.wikipedia.org/wiki/Fresnel_imager
date created:
date modified:
2023-08-13T02:54:51Z
main entity:
{"identifier":"Q5503150","url":"https://www.wikidata.org/entity/Q5503150"}
image:
fields total:
13
integrity:
14