A 360 degree surveillance system for detecting an infrared IR signal comingrom a scene. The IR signal is reflected by the scanning mirror to an imaging lens. The scanning mirror rotates 360 degrees around a vertical axis. The imaging lens images the IR signal through a derotator onto a linear array of...http://www.google.com.tw/patents/US4982092?utm_source=gb-gplus-share專利 US4982092 - 360 Degree optical surveillance system
