The use of half-tone screens in Fresnel zone plate imaging of incoherent sources

H. H. Barrett; D. T. Wilson; G. D. Demeester

doi:10.1016/0030-4018(72)90042-9

The use of half-tone screens in Fresnel zone plate imaging of incoherent sources

H. H. Barrett, D. T. Wilson, G. D. Demeester

Medical Imaging

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

An off-axis Fresnel zone plate may be used as a large-area "coded" aperture for imaging incoherent sources. The zone plate is sufficiently coarse that only shadow-casting, and not diffraction, is involved. It is shown here that the usefulness of this system can be greatly increased by using a half-tone screen to introduce a spatial carrier frequency and heterodyne the object spectrum into the passband of the zone plate.

Original language	English (US)
Pages (from-to)	398-401
Number of pages	4
Journal	Optics Communications
Volume	5
Issue number	5
DOIs	https://doi.org/10.1016/0030-4018(72)90042-9
State	Published - Aug 1972

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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10.1016/0030-4018(72)90042-9

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abstract = "An off-axis Fresnel zone plate may be used as a large-area {"}coded{"} aperture for imaging incoherent sources. The zone plate is sufficiently coarse that only shadow-casting, and not diffraction, is involved. It is shown here that the usefulness of this system can be greatly increased by using a half-tone screen to introduce a spatial carrier frequency and heterodyne the object spectrum into the passband of the zone plate.",

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AU - Wilson, D. T.

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N2 - An off-axis Fresnel zone plate may be used as a large-area "coded" aperture for imaging incoherent sources. The zone plate is sufficiently coarse that only shadow-casting, and not diffraction, is involved. It is shown here that the usefulness of this system can be greatly increased by using a half-tone screen to introduce a spatial carrier frequency and heterodyne the object spectrum into the passband of the zone plate.

AB - An off-axis Fresnel zone plate may be used as a large-area "coded" aperture for imaging incoherent sources. The zone plate is sufficiently coarse that only shadow-casting, and not diffraction, is involved. It is shown here that the usefulness of this system can be greatly increased by using a half-tone screen to introduce a spatial carrier frequency and heterodyne the object spectrum into the passband of the zone plate.

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The use of half-tone screens in Fresnel zone plate imaging of incoherent sources

Abstract

ASJC Scopus subject areas

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