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 | |
| State | Published - Jan 1 1974 |
| Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Engineering(all)
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Cite this
Barrett, H. H., Stoner, W. W., Wilson, D. T., & DeMeester, G. D. (1974). CODED APERTURES DERIVED FROM THE FRESNEL ZONE PLATE. Optical Engineering, 13(6), 539-549. https://doi.org/10.1117/12.7978722