Abstract
A near-infrared imaging system of Fresnel zone plate scanning holography is proposed and the system point spread function is calculated. The calculation shows that the system point spread function is quite close to the Dirac delta function. Differences between the experimental results and the theoretical calculation of the system point spread function are analyzed. Experiments in which three metal rings with wire diameter of 1.5 mm, 1.0 mm and 0.4 mm respectively, embedded in a 1% intralipid solution are imaged using the system demonstrated that the reconstruction of the two metal rings with wire diameters of 1.5 mm and 1.0 mm are clear and the reconstructions of the metal ring with wire diameter of 0.4 mm can also be distinguished from the noise. The system is thus shown by experiments to be workable in imaging absorbers embedded in a highly scattering turbid media.
| Original language | English |
|---|---|
| Pages (from-to) | 449-452 |
| Number of pages | 4 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 23 |
| Issue number | 4 |
| Publication status | Published - Aug 2003 |
Keywords
- Fresnel zone plate scanning holography
- Highly scattering media
- Imaging of absorber Embedded
- System point spread function