Focussing lens operating device

摘要

An optical focussing device for an optical information storage system. A hollow cylindrical holder carries a lens at its upper end. The holder is connected to a frame by two thin plates adjacent each other near the upper end and by one thin plate at a lower position. A vibration diminution element is interposed between the upper pair of plates. Each plate is circular with a central opening and several scroll shaped cuts extending from the opening toward the outside edge.