By John Oncea, Editor Optical technologies are used in telecommunications, data storage, imaging and vision systems, medicine, industry, and electronics. They are also used to create and display art. Here’s how. Back in college, I took an art appreciation class. I remember Doric and Ionic columns, both types of classical columns that are often found in ancient Greek architecture. And I remember being introduced to Picasso’s 1937 anti-war masterpiece Guernica. And … well, that’s it.