Patent ID: 8523081
Filing Date: 2013-09-03
Classification: G02B,G06F

Abstract:
1. An information input help sheet, disposed on a printed surface of a print or on a display screen of a display unit, and on which is provided a dot pattern to be read by an optical reading unit in order to output information relating to an image of the print or to a display of the display unit, comprising: an infrared reflection layer which has a characteristic to reflect infrared rays from one side and transmit visible light; and a dot pattern layer provided on the one side of the infrared reflection layer and on which dots generated by a dot-code generating algorithm and formed with material having an infrared absorbing characteristic are arranged according to a predetermined rule in order to perform a variety of multimedia information output and/or operation instructions, wherein an infrared diffusion layer that transmits visible light and diffuses infrared light is provided between the infrared reflection layer and the dot pattern layer, the infrared diffusion layer that transmits visible light and diffuses infrared light is provided on a further external surface of the dot pattern layer, or an infrared diffuse reflection layer that transmits visible light and diffusely reflect infrared rays.