Thermographic camera
（重定向自IR detector）
![Image of a small dog taken in mid-infrared (](/Images/godic/202501/21/Infrared_dog4119.jpg")
![A thermal image showing temperature variation in a hot air balloon.](/Images/godic/202501/21/Infarot_94119.jpg")
![Thermographic image of a ringtailed lemur](/Images/godic/202501/21/Thermographic_image_of_ringtailed_lemur4119.jpg")
![Hot hooves indicate a sick cow](/Images/godic/202501/21/Infrared_image_of_a_cow_with_with_foot-and-mouth_disease4120.jpg")
A thermographic camera (also called an infrared camera or thermal imaging camera) is a device that forms an image using infrared radiation, similar to a common camera that forms an image using visible light. Instead of the 400–700 nanometre range of the visible light camera, infrared cameras operate in wavelengths as long as 14,000 nm (14 µm). Their use is called thermography.