| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an imaging device in which image quality is not degraded even if a thick optical element is inserted into and removed from an optical path. <P>SOLUTION: An imaging device includes: a lens device; and a camera device which can be attached to and removed from the lens device. The camera device includes an imaging element and an optical element which can be inserted into and removed from an optical path. The optical element has a surface having positive refractive power. The camera device includes optical distance adjustment means for making an optical distance longer in the optical path. A ratio between a thickness on an optical axis of the optical element and a thickness on the optical axis of the optical distance adjustment means is property set. <P>COPYRIGHT: (C)2013,JPO&INPIT |
