| 摘要 |
PURPOSE:To read an original picture accurately even when an original is floated up by adjusting a focus of a 'selfoc (R)' lens on an original. CONSTITUTION:A focus correction member 5 having a high refractive index is inserted selectively between a 'selfoc (R)' lens 1 and an original so as to change properly the focus of the lens 1. Or a proper focus correction member is selected among plural focus correction members with different refractive index or plural focus correction members with different thickness and inserted between the lens 1 and an original to change properly the focus of the lens 1. Moreover, a mirror bending an optical path at a right angle is arranged between the lens 1 and the original and the mirror is properly moved to change properly the focus of the lens 1. |
