MILLIMETER WAVE/TERAHERTZ WAVE IMAGING DEVICE, CHECK METHOD, AND CALIBRATION METHOD

• Main Authors: ZHAO, Ziran, CHEN, Zhiqiang, LI, Yuanjing, WU, Jian, JIN, Yingkang, YOU, Yan, MA, Xuming
• Format: Patent
• Language: English; French; German
• Published: 28.12.2022
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETECTING MASSES OR OBJECTS; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The present disclosure provides a millimeter wave/terahertz wave imaging apparatus, a method of detecting a human body or an article by using the millimeter wave/terahertz wave imaging apparatus, and a method of calibrating the millimeter wave/terahertz wave imaging apparatus. The millimeter wave/terahertz wave imaging apparatus includes a quasi-optical assembly and a millimeter wave/terahertz wave detector array. The quasi-optical assembly is adapted to reflect and converge a millimeter wave/terahertz wave radiated or reflected by a first inspected object and a second inspected object onto the millimeter wave/terahertz wave detector array. The quasi-optical assembly includes a reflector, and the first inspected object and the second inspected object are respectively located on opposite sides of the reflector. The reflector is rotatable about a horizontal axis so as to respectively receive and reflect a wave beam from parts of the first inspected object at different vertical positions of a first field of view and a wave beam from parts of the second inspected object at different vertical positions of a second field of view. The millimeter wave/terahertz wave detector array is adapted to receive a wave beam from the quasi-optical assembly. The imaging apparatus simultaneously images two inspected objects located on opposite sides of the reflector, thereby improving the inspection efficiency with a simple control and a low cost.