This work consists of 33 peer-reviewed papers. Altogether, they offer a gamut of timely information on “Smart Optics”. The papers are conveniently arranged under the headings: chapter 1 - Smart optical materials; chapter 2 - Passive, active and adaptive optical devices & systems; chapter 3 - Ongoing applications and perspectives. This special volume has also been published online in the series, “Advances in Science and Technology” Vol. 55.