An image pickup lens relating to the present invention is a lens for forming an image of a subject onto a photoelectric converter of a solid-state image pickup element. The pressure pump system and the at least one fuel heating system are in fluid communication with the a fuel injection system to accommodate for the fuel circulation, where the at least one fuel heating system heats up the ambient temperature fuel from the fuel injection system prior to combustion. A message text from a user computer is checked by using the notable words collection. Each of the optical elements is aligned with a corresponding one of the clusters of photosites and is arranged to intercept light directed toward the photosites of the corresponding cluster.