| 摘要 |
<p>A taking lens 10 of an automatic focusing system of an optical path length difference type is configured so that AF object light is branched from a main optical path that guides object light to a video imaging device 26 of a camera main body 14, and object images are formed on AF imaging devices 22A and 22B. A 2/3 type CCD is used as the video imaging device 26, and a 1/3 type CCD, that is easily available and cheap, is used as the AF imaging devices 22A and 22B. In view of that sizes of the AF imaging devices 22A and 22B are smaller than that of the video imaging device 26, the object images formed on the AF imaging devices 22A and 22B are reduced by a reduction optical system 17.</p> |
