A head mounted display which allows a user to visually recognize a virtual image and external scenery, and includes an image display unit that forms the virtual image which is visually recognized by the user, and a superimposition processing unit that causes the image display unit to form the virtual image based on superimposition information for superimposing invisible information which is not shown in an appearance of an object on the object included in the external scenery.本發明提供一種在使用者不移動視線之情況下能夠同時視認視界方向之物體之實像及未顯現於物體之外觀之資訊的頭部配戴型顯示裝置。該頭部配戴型顯示裝置係供使用者能夠視認虛像與外景者,且包含:圖像顯示部,其形成供使用者視認之虛像;及重疊處理部,其於圖像顯示部形成基於重疊資訊之虛像,該重疊資訊係用以使未顯現於物體之外觀之資訊即非可視資訊重疊於外景中所包含之物體。
