| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical system for capturing images from all directions by projecting the three-dimensional surface display faces of a cylinder, a sphere and a cone to the remote in all the directions. SOLUTION: The optical system for projecting an object face 3 of a three-dimensional shape of rotation symmetry on the whole remote periphery has at least one reflection face 2 of rotation symmetry. COPYRIGHT: (C)2007,JPO&INPIT
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