An ultra-small device has been developed that can detect handguns and kitchen knives hidden under clothing.
Electromagnetic waves called terahertz waves, which have the property of slipping through objects, are used, and companies are considering using them for crime prevention measures.
Of these, Canon has developed a new device measuring about 3 mm square that can irradiate terahertz waves.
We are trying to make use of the characteristics of terahertz waves, which have the characteristics of both radio waves and light and can pass through cloth and plastic, for inspection equipment.
With this device, it is possible to detect pistols, kitchen knives, etc. hidden under clothes by suspicious persons and display their shapes on the monitor.
Unlike X-rays, which are now widely used, terahertz waves are characterized by no risk of exposure, and the company is aiming to use them for baggage inspections at airports and event venues, as well as for security measures at stores. increase.
Yasufumi Koyama, senior researcher at the Device Development Division, said, "It can be used for security measures in various places. We would like to continue technical development to achieve both performance and cost."
In addition, the use of terahertz waves is expected to enable higher-speed, larger-capacity communications than ever before. We are.