Head-mounted electronic device permits viewing of two images at once

An electronic-optical device was recently demonstrated by Hughes Aircraft Co., which gives the viewer the equivalent of “second sight” in a practical form. The Electrocular weighs about 30 ounces, is worn on the head, and permits the wearer to see what is going on in a remote location in addition to what is in his natural field of view. He can either concentrate on the picture presented by the device or look through it to the natural scene.