Leader in Lighting Solutions" for over 110 Years. Located in Granville, Ohio, Holophane has been the leader in lighting solutions for more than a century. The company provides lighting systems for commercial, industrial, emergency and outdoor applications. The hallmark of Holophane luminaires is the borosilicate glass reflector/refractor. The glass prisms provide a combination of uplight and downlight to illuminate any environment evenly without creating dark spots or glare.