Terahertz image sensor i.e. multi-directional terahertz image sensor, for detection of terahertz radiation to detect weapon concealed by garment, has antennas provided with differently oriented axes of maximum sensitivity in group of pixels

摘要

The sensor has a matrix of photosensitive pixels (Px) arranged in rows and columns, where each pixel comprises an anisotropic antenna (2) e.g. bow-tie antenna, for sensing electromagnetic radiation with an axis (SM) of maximum sensitivity. The matrix comprises a group (C) of pixels, in which antennas are provided with differently oriented axes of maximum sensitivity. A control circuit is utilized for storing signals representative of same scene seen by the pixels at different times. An independent claim is also included for a method for managing a multi-directional terahertz image sensor.