{ "items" : [
    { "id" : "http://dbpedia.org/resource/Optical_engineering"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Optical engineering is the field of study that focuses on applications of optics. Optical engineers design components of optical instruments such as lenses, microscopes, telescopes, and other equipment that utilizes the properties of light. Other devices include optical sensors and measurement systems, lasers, fiber optic communication systems, optical disc systems (e.g. CD, DVD), etc."] } } }
