APPARATUS FOR IMAGING OBJECTS ON THE REMOTE SIDE OF A BARRIER USING RADIATION

摘要

Apparatus (1) for imaging an object (4) on the remote side of a barrier (6). The apparatus has source means (2) for scanning the object (4) through the barrier (6) with radiation and mask means (8) having at a least one radiatio n transparent area wherein the radiation from the source is masked thereby to project on to the object (4) at least one scanning beam of radiation. The apparatus (1) also has detector means (10) for detecting radiation reflected from any scanned point on the object (4) and image generation means for generating an image of the object (4) from the detected radiation.