UVIR

UVIR is an umbrella term used to describe measurements, imaging, and analysis that involve the ultraviolet (UV) and infrared (IR) regions of the electromagnetic spectrum. It is not a distinct scientific discipline, but a descriptor applied across fields such as spectroscopy, imaging, and remote sensing to indicate the involvement of UV and IR wavelengths.

The UV region typically covers wavelengths roughly from 10 to 400 nanometers, while the IR region extends from about 700 nanometers to several hundred micrometers. Within IR, common subdivisions include near-IR (approximately 0.75–1.4 μm), mid-IR (around 3–8 μm), and far-IR (beyond 8 μm). These ranges correspond to different photon energies and interaction mechanisms with matter, and they determine suitable detectors, optics, and applications.

Instrumentation designed for UVIR work includes UV and IR cameras, thermographic systems, spectrometers with UV/IR capabilities, and sensors such as UV-enhanced photodiodes or thermal detectors. Many UVIR instruments must contend with challenges such as atmospheric absorption (notably ozone for UV and water vapor for IR), detector cooling requirements for infrared devices, and potential photochemical or thermal damage to samples.

Applications of UVIR techniques are broad. In science, they are used for material characterization, chemical sensing, and environmental monitoring. In astronomy, UV and IR observations reveal phenomena invisible in the visible spectrum. In industry, UV and IR imaging supports quality control, fluorescence analysis, and non-destructive testing. Safety considerations are important, as UV exposure can damage biological tissue and IR radiation can cause heating of materials and eye or skin injury.