There are currently two types of infrared thermal imaging sensors on the market: cooled and uncooled. Uncooled IR detectors operate at ambient temperature and are based on semiconductor technology, allowing for high-volume production with small size and low cost. They are widely used in portable/handheld/mobile devices. Cooled IR detectors are packaged in units that maintain extremely low temperatures using cryo coolers, making them larger, more expensive, and less reliable due to complex cooling systems. However, cooled systems offer incredible sensitivity and typically work with long focal length optics for long-range missions.