| 摘要 |
PROBLEM TO BE SOLVED: To provide a close-up lens for resolving the problem that defocusing occurs by bringing a camera of a mobile phone with the camera extremely close to a subject to photograph the subject. SOLUTION: One convex lens is attached in front of a camera lens part of the mobile phone with the camera, and the focal length of the lens is varied, so that a vivid picture can be taken even in the case of extreme close-up photographing. COPYRIGHT: (C)2006,JPO&NCIPI
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