Translator Disclaimer
14 June 2006 Photon sieve telescope
Author Affiliations +
Abstract
In designing next-generation, ultra-large (>20m) apertures for space, many current concepts involve compactable, curved membrane reflectors. Here we present the idea of using a flat diffractive element that requires no out-of-plane deformation and so is much simpler to deploy. The primary is a photon sieve - a diffractive element consisting of a large number of precisely positioned holes distributed according to an underlying Fresnel Zone Plate (FZP) geometry. The advantage of the photon sieve over the FZP is that all the regions are connected, so the membrane substrate under simple tension can avoid buckling. Also, the hole distribution can be varied to generate any conic or apodization for specialized telescope requirements such as exo-solar planet detection. We have designed and tested numerous photon sieves as telescope primaries. Some of these have over 10 million holes in a 0.1 m diameter aperture and all of them give diffraction limited imaging. While photon sieves are diffractive elements and thus suffer from dispersion, we will present two successful solutions to this problem.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Geoff Andersen and Drew Tullson "Photon sieve telescope", Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 626523 (14 June 2006); https://doi.org/10.1117/12.669524
PROCEEDINGS
8 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Analysis of target wavefront error for secondary mirror of a...
Proceedings of SPIE (September 07 2014)
Photon sieve telescope
Proceedings of SPIE (August 31 2005)
Photon sieve null corrector
Proceedings of SPIE (July 05 2006)
AIT of optical payloads in Thales Alenia Space F ...
Proceedings of SPIE (June 17 2007)

Back to Top