| 摘要 |
<p>An image-capturing lens (SL) installed in an optical device such as a camera (1) is characterized by having, in order from the object side, a first lens group (G1) having positive refractive power and a second lens group (G2) having positive refractive power, and having a biconcave negative lens (L22) nearest to the image side, the image-capturing lens (SL) satisfying the formula 0.30<yG2/yG1<0.80 (yG1 expresses the amount of movement on an optical axis of the first lens group (G1) when focusing from infinity to an image-capturing power of -0.01, yG1 being a negative value when moving to the object side; and yG2 expresses the amount of movement on an optical axis of the second lens group (G2) when focusing from infinity to an image-capturing power of -0.01, yG2 being a negative value when moving to the object side).</p> |
