| 摘要 |
<p>An imaging lens includes from its object side, a first lens group (G1) including a biconcave lens (L1); a second lens group (G2) including two lenses (L2,L3), the convex surfaces of which are arranged opposite to each other and having positive refractive power as a whole; a third lens group (G3) including a biconcave lens (L3); and a fourth lens group (G4) including two lenses (L5,L6), the convex surfaces of which are arranged opposite to each other and having positive refractive power, as a whole, the imaging lens satisfying specific conditions.
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