Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2009-02-16
2011-10-18
Porta, David P. (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
Reexamination Certificate
active
08039803
ABSTRACT:
A method for phase contrast imaging comprises: illuminating an object by terahertz radiation such that the terahertz radiation interacts with the object; illuminating a diffraction grating by the terahertz radiation that has interacted with the object; translating the diffraction grating along the direction of the grating wave vector, to measure, for each of different grating positions, an intensity distribution of the terahertz radiation that has interacted with the object and with the grating in a diffraction field; and retrieving a phase contrast image of the object from the intensity distributions. An apparatus for phase contrast imaging is also provided.
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Chen Zhi-qiang
Huang Zhifeng
Kang Kejun
Li Yuanjing
Liu Yinong
Kim Kiho
Nuctech Company Limited
Porta David P.
Tsinghua University, et al.
Westman Champlin & Kelly P.A.
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