Japanese Armor is composed of 6 different components called hei (tsuwamono)-no-rokugu, or just rokugu. These components were the chest protector (yoroi), the helmet (kabuto), the mask (ho-ate or mempo), the armored sleeves (kote), the shin guards (sune-ate), and the loin guards (koshi-ate). Later the term gusoku described the whole set of armor. Below are some pictures of Japanese armor.
Below is a Kabuto, the helmet worn by the samurai, usually the fancier the kabuto the higher rank the samurai.
This is a top view of a Jingasa, this was usually worn by the peasant conscripts or low ranking samurai.
to go to a site that shows you how to build your own Japanese armor.