Show back drap aids television transmitting screens of television transmitting tubes results in more sharply focused and detailed television image according to a patent no issued to willard hickok of bloomfield N J the back drop Is a film ot of graphite at the backof back 0 the transparent mica support on which are mounted the photoelectric photo electric elements that convert th the escene scene being televised tied into an electric image and which is broadcast through the ethor ether it if is if explained that when the photoelectric photo electric screen ot of the tele eye tube light from the image is reflected bounces off the walls of af the tube back on to 6 the screen so that a double image linage may be formed at the same ti time methe the photoelectric photo electric elements scatter the light all ali this it is indicated blurs and makes hazy the image to be broadcast the blackb black back dik drop which is tle the subject ot of the patent on the other hand absorbs the light which would thus ordinarily be reflected the result isa is a sharper more detailed image |