APPARATUS AND METHOD FOR DETECTING LASER BEAM BY LIGHT-HEAT ENERGY CONVERSION

摘要

An apparatus and a method for detecting a laser beam by light-heat energy conversion are provided to determine wiretapping through analysis of heat distribution obtained by converting light energy of the laser beam transmitted to a window into heat energy. An apparatus for detecting a laser beam by light-heat energy conversion includes a light-heat energy converting unit(101), a plurality of heat sensing units(102), and a wiretapping determining unit(103). The light-heat energy converting unit converts light energy into heat energy. The heat sensing units sense heat. The wiretapping determining unit analyzes heat distribution. The wiretapping determining unit has a signal processing unit, a threshold determining unit, and an alarming unit. The signal processing unit processes signals transmitted from the heat detecting units by positions. The threshold determining unit determines whether a temperature difference is out of a predetermined range. The alarming unit alarms when the temperature difference is out of the predetermined range.