Hot mirrors are used in applications where it is necessary to decrease unwanted heat. They are often used in projection systems to protect the system from damage. Hot mirrors reflect infrared (IR) radiation and transmit visible light. The hot mirror is generally inserted in the path of the light beam, reflecting the infrared back toward the energy source, and transmitting the cooled visible light to the target. Dynasil manufactures hot mirrors through EMF. Please contact EMF directly to discuss your hot mirror needs.