Cold & Hot Mirror
#hot #mirror #coating
Heat mirrors and cold mirrors are special bandpass filters that can reflect infrared light and ultraviolet light and only allow visible light to pass through, also known as heat-absorbing filters, also known as IR cut filters. Heat Mirror will be a large number of heat generated near-infrared light isolated optical path to protect the heat-sensitive devices, where the need for high light intensity and need to be separated from the heat applications can be.
http://www.hypoptics.com/components/mirrors/cold-hot-mirror.html