Short-wave infrared (SWIR) sensors have broken through the traditional limitations of infrared imaging technology, opening another important window in the infrared spectrum. Compared with traditional long-wave (LWIR) and mid-wave (MWIR) sensors, short-wave infrared sensors can not only capture the reflected spectrum of objects but also reveal more details. Their working principle is similar to visible light imaging, allowing them to balance low energy consumption and high efficiency. With military demands gradually shifting towards precise and real-time monitoring, the importance of SWIR sensors in tactical reconnaissance is increasing, especially in complex environmental conditions where they provide higher-quality images, helping to quickly identify and locate targets. The high resolution and penetration capability of SWIR sensors make them a key technology supporting next-generation combat needs in ground, aerial, and space applications.
SWIR sensors can detect reflected light in the short-wave infrared range, and the imaging effect in this band is very similar to visible light but can provide more detail. Through the SWIR band, the characteristics of objects are displayed differently from visible light. For example, dry objects or hair, due to the lower water content, usually appear bright white, while water-rich skin or wet objects appear in darker tones. This gives SWIR sensors a unique advantage in target identification, especially in complex backgrounds. By combining SWIR, visible light, as well as LWIR and MWIR sensors, precise detection and identification of targets can be achieved on multiple levels, maximizing operational efficiency and recognition capabilities.
Lasers in the SWIR band perform excellently in terms of safety because their wavelengths are not easily penetrable by the cornea of the human eye, effectively avoiding eye injury. Especially the 1550 nm wavelength laser has a lower eye risk, making SWIR sensors widely used in military and security fields to illuminate targets or personnel while ensuring the safety of operators. This band of laser illumination not only does not directly harm vision but also provides stable lighting in low-light environments, ensuring precise target location and identification.
The 1550 nm laser is completely harmless to the human eye due to its invisibility but can be easily detected by GHOPTO SWIR sensors. The use of SWIR sensor technology with SWIR laser illumination can provide high-brightness clear imaging of targets without exposing the light source. This technological advantage allows laser beams to accurately locate and illuminate specific targets for detection, tracking, or distance measurement. This application demonstrates its unique practical value in scenarios requiring covert operations and high-precision target analysis.
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