Describir: Lighting developments exhibited at Photokina 1980 /

  ______    ______  __    __   _    _    _____       ___      _  __    _____   
 /_   _//  /_   _// \ \\ / // | || | || |  __ \\    / _ \\   | |/ //  |  ___|| 
 `-| |,-    -| ||-   \ \/ //  | || | || | |  \ ||  | / \ ||  | ' //   | ||__   
   | ||     _| ||_    \  //   | \\_/ || | |__/ ||  | \_/ ||  | . \\   | ||__   
   |_||    /_____//    \//     \____//  |_____//    \___//   |_|\_\\  |_____|| 
   `-`'    `-----`      `       `---`    -----`     `---`    `-` --`  `-----`