| 摘要 |
PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of maintaining an image in a focused state while keeping a constant magnification even when a distance from an imaging object is changed. SOLUTION: The imaging apparatus includes a first optical element 110 having a first focal length, and a second optical element 120 having a variable focal length. The second optical element 120 can be located at a fixed first distance S<SB>12</SB>of approximately the first focal length away from the first optical element 110. Thus, such an imaging apparatus can permit an optical system to focus on an object at various distances and at a constant magnification with no moving parts. COPYRIGHT: (C)2008,JPO&INPIT |
