Infrared Cameras Capture Fast-Moving Targets

The Flir SC7000 series of infrared cameras from Flir Advanced Thermal Solutions (ATS) are designed to provide the high performance and facilities required for thermal imaging of high-speed events. These research-grade cameras provide gigabit Ethernet, camera link and USB interfaces. They also feature simultaneous digital and analogue outputs, and are available in multiple wavebands, detector resolutions and lens configurations. According to Flir ATS, the camera's fast frame rates and adjustable and triggered integration times allows the user to capture fast-moving objects, as well as those with rapidly changing temperatures.

High-speed IR thermography can reveal hidden features of fast-moving objects when their temperature is higher than the background. The video and data acquisition capabilities of Flir's advanced IR cameras allow the capture of thermal images at rates exceeding 62,000 frames per second. This is equivalent to an exposure time of a few microseconds - meaning that individual video frames can provide still images of a fast-moving target or thermal event, referred to as stop-motion imaging. Possible applications include thermal and dynamic analysis of jet-engine turbine blades, supersonic projectiles and explosions.

According to Flir ATS, high-speed IR cameras can supply images of fast-moving objects with minimal blur. Flir claims its camera systems are able to supply images of fast-moving objects with minimal blur to to their analogue-to-digital (A/D) converters, which provide high resolution and short integration times. The shorter the integration time, the less likely there will be blurring. When data acquisition is fast enough, it's possible to capture a sequence and play it back in slow motion. According to Flir, avoiding image blur is also tied to the thermal sensitivity of camera detectors. With more sensitive detectors, the data integration time can be shorter, because less IR radiation energy is required to record an acceptable image. This is particularly important when you need to image fast-moving, low-energy targets.

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