Title:
MILLIMETER-WAVE/TERAHERTZ-WAVE IMAGING APPARATUS, AND INSPECTION METHOD FOR BODY OR OBJECT
Document Type and Number:
WIPO Patent Application WO/2020/134336
Kind Code:
A1
Abstract:
A millimeter-wave/terahertz-wave imaging apparatus (100), and an inspection method for a body or an object. The imaging apparatus comprises: a quasioptical assembly comprising a rotating polygon mirror (1") and a fourth reflector (7), wherein the rotating polygon mirror (1") is capable of rotating about a rotating axis (o) thereof, such that multiple reflectors on the rotating polygon mirror (1") alternately serve as a first reflector (1A) and receive and reflect a millimeter-wave/terahertz-wave beam from a first object under inspection (31A), and another reflector of the multiple reflectors that is adjacent to the first reflector (1A) serves as a second reflector (1B) and receives and reflects a millimeter-wave/terahertz-wave beam from a second object under inspection (31B); and a chopper (8) configured to only allow either a beam from the first reflector (1A) or a beam reflected by the fourth reflector (7) from the second reflector (1B) to be incident on a detector array (2), the chopper (8) rotating around a center axis (81) thereof, such that the detector array (2) alternately receives a beam from the first reflector (1A) or from the second reflector (1B). The apparatus achieves simultaneous imaging of two objects under inspection, thereby achieving high inspection efficiency, and a high detector utilization rate.
Inventors:
ZHAO ZIRAN (CN)
YOU YAN (CN)
JIN YINGKANG (CN)
XIE HUAN (CN)
QIAO LINGBO (CN)
LIU WENGUO (CN)
MA XUMING (CN)
WEN JIANGUO (CN)
YOU YAN (CN)
JIN YINGKANG (CN)
XIE HUAN (CN)
QIAO LINGBO (CN)
LIU WENGUO (CN)
MA XUMING (CN)
WEN JIANGUO (CN)
Application Number:
PCT/CN2019/110406
Publication Date:
July 02, 2020
Filing Date:
October 10, 2019
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
NUCTECH CO LTD (CN)
NUCTECH CO LTD (CN)
International Classes:
G01V8/10
Foreign References:
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| CN109633775A | 2019-04-16 | |||
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| CN104849770A | 2015-08-19 | |||
| JP2013024842A | 2013-02-04 | |||
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| CN101832912A | 2010-09-15 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)
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