Thermal Imaging Camera

Overview

A thermal imaging camera makes heat visible. Every object above absolute zero emits long-wave infrared radiation, and the amount it emits rises sharply with temperature; this camera focuses that radiation onto an uncooled microbolometer array, reads the tiny temperature change at each pixel, and renders the scene as a false-colour map of surface temperature. It sees through total darkness, smoke, and glare, which makes it a working tool for electricians, building inspectors, firefighters, and mechanics who need to find hot connections, missing insulation, or trapped heat.

How it works

Infrared cannot pass through ordinary glass, so the Germanium Lens Assembly uses germanium elements with an anti-reflection coating, the standard optical material transparent in the 8–14 µm band. It focuses scene radiation onto the Microbolometer Detector, an uncooled focal-plane array of microbolometers whose pixels each change resistance as they absorb IR; a readout IC, a thermoelectric stabiliser, and a periodic NUC shutter flag keep the array calibrated against drift.

The Sensor Front-End Board interfaces the detector and digitises its low-level analogue signal through a high-resolution ADC. From there the Main Processor Board image-processor SoC applies non-uniformity correction, maps temperature to a colour palette, and composites the result for the Display Module colour touchscreen. To make warm objects easier to identify, a separate Visible-Light Camera CMOS camera captures the scene in visible light, and the processor fuses its edge detail with the thermal image.

The optics and electronics sit in a sealed Housing Assembly with an overmoulded grip and weather seal, sized for one-handed use. A Battery Pack LiPo pack powers the unit, a laser pointer marks the measured spot, and a trigger captures radiometric images to microSD, each frame storing a full temperature value per pixel for later analysis.