CODED APERTURES DERIVED FROM THE FRESNEL ZONE PLATE.

H. H. Barrett; W. W. Stoner; D. T. Wilson; G. D. DeMeester

doi:10.1117/12.7978722

CODED APERTURES DERIVED FROM THE FRESNEL ZONE PLATE.

H. H. Barrett, W. W. Stoner, D. T. Wilson, G. D. DeMeester

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

20 Scopus citations

Abstract

C. Mertz and N. O. Young introduced the idea of using a Fresnel zone plate as a shadow-casting reticle, or coded aperture, in x-ray astronomy. More recently, considerable progress has been made toward using the zone-plate aperture for gamma-ray imaging in nuclear medicine. The most successful configuration has used an off-axis section of a zone plate in conjunction with a halftone screen. In this paper a variety of closely related coded apertures is discussed, including an annulus, an inverted zone plate, a spiral zone plate, and the Girard grill. In most cases, the technique of grid-coded subtraction is used to suppress the zero-order (DC) background light usually associated with zone-plate imaging.

Original language	English (US)
Pages (from-to)	539-549
Number of pages	11
Journal	Optical Engineering
Volume	13
Issue number	6
DOIs	https://doi.org/10.1117/12.7978722
State	Published - Jan 1 1974
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering(all)

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title = "CODED APERTURES DERIVED FROM THE FRESNEL ZONE PLATE.",

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AU - DeMeester, G. D.

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AB - C. Mertz and N. O. Young introduced the idea of using a Fresnel zone plate as a shadow-casting reticle, or coded aperture, in x-ray astronomy. More recently, considerable progress has been made toward using the zone-plate aperture for gamma-ray imaging in nuclear medicine. The most successful configuration has used an off-axis section of a zone plate in conjunction with a halftone screen. In this paper a variety of closely related coded apertures is discussed, including an annulus, an inverted zone plate, a spiral zone plate, and the Girard grill. In most cases, the technique of grid-coded subtraction is used to suppress the zero-order (DC) background light usually associated with zone-plate imaging.

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CODED APERTURES DERIVED FROM THE FRESNEL ZONE PLATE.

Abstract

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