| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure the distance to an object, and to perform various photographic controls by utilizing the measured result. SOLUTION: A lamp 40 includes luminance modulated information in illumination light 40a, with which an advertisement display object 39 is irradiated. When an information terminal 10 acquires the luminance modulated information by imaging the advertisement display object 39, distance range information is taken out from an irradiation range and the acquired information; and the distance from the information terminal 10 to the illumination light 40a on the advertisement display object 39 is calculated. When the measured distance is within a limited distance range, information for allowing capturing of simultaneously acquired information is displayed. Otherwise, information that does not allow capturing of the information is displayed, and information indicating closer approach to the advertisement display object 39 is displayed. COPYRIGHT: (C)2008,JPO&INPIT |
