A cold mirror is a specialized dielectric mirror, a dichroic filter, that reflects the entire visible light spectrum while very efficiently transmitting infrared wavelengths. Similar to hot mirrors, cold mirrors can be designed for an incidence angle ranging between zero and 45 degrees, and are constructed with multi-layer dielectric coatings, in a manner similar to interference filters. Cold mirrors can be employed as dichroic beamsplitters with laser systems to reflect visible light wavelengths while transmitting infrared.
Famous quotes containing the words cold and/or mirror:
“It is easier to sail many thousand miles through cold and storm and cannibals, in a government ship, with five hundred men and boys to assist one, than it is to explore the private sea, the Atlantic and Pacific Ocean of one’s being alone.... It is not worth the while to go round the world to count the cats in Zanzibar.”
—Henry David Thoreau (1817–1862)
“A story of particular facts is a mirror which obscures and distorts that which should be beautiful; poetry is a mirror which makes beautiful that which it distorts.”
—Percy Bysshe Shelley (1792–1822)