Imaging system having a distorting optical element

摘要

An optical imaging system, for forming an image of a field of view in an object plane onto an image plane, has an optical distorting element such as a reflector 11, so as to impose a non liner relationship between areas of the object plane and areas of the image plane. The image plane is not parallel to the object plane. This system may be used with an infrared detector array for intruder detection. Other applications include person and vehicle counters and automatic door openers.