| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a compact wide-angle inner focus lens which is compatible with 35-mm film format image sensors and offers high imaging performance, and to provide an image capturing device having the same.SOLUTION: An inner focus lens comprises a first lens group Ghaving positive refractive power, a second lens group Ghaving negative refractive power, and a third lens group Ghaving positive refractive power arranged in order from the object side. The first lens group Gand the third lens group Gare stationary on an optical axis. The second lens group Gshifts focus from being focused on an object at infinity to being focused on an object at a closest distance by moving from the object side to the image side along the optical axis. A compact wide-angle inner focus lens which is compatible with 35-mm film format image sensors and offers high imaging performance is realized by satisfying predetermined conditions.</p> |
