Short‑Wave Infrared (SWIR) 960–2500nm: Exclusive Spectral Range for Industrial Mineral, Plastic & Pharmaceutical Composition Inspection

Visible‑to‑near‑infrared light is mainly used for biological, human‑body and automotive perception, while the960–2500nm Short‑Wave Infrared (SWIR) rangeserves as an exclusive identification band for industrial inorganic and organic materials. C‑H, O‑H and N‑H chemical bonds of minerals, plastics, polymers, chemical raw materials, pharmaceuticals and crops produce unique characteristic absorption peaks in the SWIR band, forming irreplicable “spectral fingerprints” for precise material composition differentiation.

RGB and 400–1000nm near‑infrared light cannot distinguish plastic types, mineral compositions or pharmaceutical authenticity; mid‑long‑wave infrared only detects temperature rather than material types. Therefore,high‑precision industrial material composition inspection must adopt the SWIR band. As a global hyperspectral leader, Finland’s SPECIM adopts the 960–2500nm range uniformly for its SX25 and FX series cameras, paired with ultra‑high 8nm spectral resolution to capture subtle material composition differences. This band fits three major industrial scenarios: first, precise sorting of recycled plastics including PP, PE, PVC and ABS; second, mineral exploration and chemical‑raw‑material identification; third, non‑destructive quality inspection of pharmaceuticals and agricultural products for pesticide residues, mildew and adulteration. SWIR hyperspectral technology breaks traditional off‑line laboratory inspection modes to realize 24‑hour on‑line non‑destructive analysis for industrial production lines, a key technology for intelligent upgrading of high‑end manufacturing.