| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a problem of a conventional mobile phone with camera that has had a remarkable difference of a focal position between a general photographing and a magnified photographing of the iris of a talker for the purpose of person authentication because the person authentication of a possessor of the mobile phone is required attended with multimedia application of the mobile phone, incorporation of the camera is generalized and the built-in camera can be used for a tool for the person authentication to effective utilization of it. SOLUTION: A movable lens is provided in front of an existing objective lens so as to considerably change a focal position when the movable lens is employed and not employed.</p> |
