3 ms·
Actively cooled IR sensors can achieve higher resolution and accuracy, but ambient temperature IR sensors have been around for a while. As long as the incident
by icegreentea 14y ago
Actively cooled IR sensors can achieve higher resolution and accuracy, but ambient temperature IR sensors have been around for a while. As long as the incident IR can drive the sensor element away from ambient temperature, then you can have sensing.
- klodolph 14y agoIR sensors don't work by detecting heat changes. They convert infrared photons directly to electrical current. Now I don't actually know jack about IR sensors, but I would assume that increased temperature means increased noise, as it does with visible-light CCDs. People refrigerate visible-light CCDs too, for taking low-noise astronomical photos.