![]() For example, if law enforcement comes across a white powdery substance, MWIR can tell them if it is fentanyl, cocaine, or baby powder. It can see through bags and packages and identify chemicals and substances without touching or analyzing it. Law enforcement uses MWIR to detect and classify chemical compositions. Chemicals emit specific infrared signatures in terms of thermal dissipation and emissivity (a measure of an object’s ability to emit infrared energy). MWIR provides detailed images, day or night, even in challenging conditions such as humidity, fog, haze, rain, or smoke.Īnother interesting application is chemical identification. MWIR is ideal for long-distance surveillance. Medium-wave infrared (MWIR) use MCT (Mercury Cadmium Telluride/HgCdTe) detectors and operate in the 3000-5000 nm wavelength range. Since water absorbs SWIR light, the bruised areas show up as dark spots in images with much higher contrast. For example, when produce is deformed, water takes the place of the organic matter. In food production, SWIR detects water content in food. Because silicon is transparent above 1100 nm, SWIR identifies micro-cracks and anomalies in the quality of solar films and crystalline silicon. In solar cell manufacturing, SWIR helps to maximize the efficiency of the solar cell manufacturing process. SWIR also sees through opaque packaging such as plastic bottles to determine fill levels in pharmaceuticals, chemicals, and cosmetics for quality control. In port and harbor security scenarios where fog and haze are a regular occurrence, SWIR identifies vessels, people, and floating objects in any weather, even obscured by fog. SWIR can see through thick water vapors, including haze and fog. Short-wave infrared (SWIR) light is typically defined as light in the 1000 – 3000 nm wavelength range and primarily uses Indium gallium arsenide (InGaAs) infrared detectors to capture images. NIR detects moisture, fat, starch, and protein in crops, which allows farmers to make quick improvements to enhance the quality and quantity of produce, boosting revenue and profitability. Healthy organic material reflects more IR light than unhealthy, dead, or inorganic matter. Precision agriculture uses NIR imaging for food and crop analysis. Like currency, security labels have features that are only visible to NIR light, making it more difficult to produce counterfeit labels. NIR cameras also inspect security labels in the pharmaceutical and cosmetic industries and is used for brand protection. These security features are difficult to inspect using visible light. Banknote production is becoming increasingly complex and includes a range of security features, such as embedded magnetic strips, holographs, and watermarks. The printing industry uses NIR cameras to check security features woven into currency. NIR cameras operate in the NIR spectrum with wavelengths of 750–1000 nm and use CMOS sensors, the same sensors used in visible light applications. This technology is proving to be a reliable manufacturing tool for inline inspection and classification of a range of products. Industrial image processing in the NIR spectrum is a powerful, non-intrusive technique used on production lines for quality assurance and increased productivity. Let’s take a look at the different types of infrared and X-ray technologies, their applications, and the sensor technology that supports it.Ĭourtesy of Teledyne DALSA Near Infrared (NIR) Imaging Their ability to detect thermally emitted IR light (heat) makes them well suited for night vision, fever detection, and an assortment of security applications, to name just a few of the growing list of uses for this versatile technology. All objects radiate energy in the infrared spectrum, even objects at room temperature and frozen objects such as ice.Ī wide variety of security, surveillance, military, healthcare, and manufacturing applications use infrared cameras. Infrared refers to the region beyond the red end of the visible color spectrum and before the microwave region. 01 nm – 10 nm, penetrate deeper into an object, providing information about its internal structure. Infrared with wavelengths from 700 nm - 15,000 nm and X-ray with wavelengths of. The visible spectrum enables analysis of the surface layers of a component or an item. Inspecting the “Unseen” – Infrared and X-Ray This includes discrete part inspection for all types of containers, semiconductors, and PCBs, robotics control and guidance, surveillance and situational awareness, mail scanning and sorting, and web inspection of aluminum, steel, printed packaging, and non-woven materials. Machine vision applications built around visible light encompass virtually everything you see around you. ![]()
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