发明名称 |
Fresnel lens tomographic imaging |
摘要 |
Systems and methods for reconstructing a plurality of images of an object. An exemplary system includes a radiation source adapted to emit radiation at a plurality of frequencies; a lens with frequency-dependent focal length, such as a Fresnel lens, adapted to receive radiation modified by the object and to project onto a fixed image plane a frequency-dependent image of a slice of the object perpendicular to the radiation path; a sensor for capturing the frequency-dependent image of the object; and apparatus for facilitating creation and capture of a plurality of frequency-dependent images of the object at the plurality of frequencies. A system for reconstructing a tomographic image of the object further includes apparatus for assembling the plurality of frequency-dependent images to reconstruct the tomographic image. Methods and systems are described for use in the visible, audible, and THz frequency ranges and with broadband or narrowband radiation sources.
|
申请公布号 |
US7087902(B2) |
申请公布日期 |
2006.08.08 |
申请号 |
US20030417597 |
申请日期 |
2003.04.17 |
申请人 |
RENSSELAER POLYTECHNIC INSTITUTE |
发明人 |
WANG SHAOHONG;ZHANG XI-CHENG |
分类号 |
A61B6/00;G01J5/02;G01N21/35;G01N21/47;G02B27/22 |
主分类号 |
A61B6/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|