| 摘要 |
[Problem] To provide an imaging lens having a reduced size, involving reduced costs, having a wide angle and high performance, and with which back focus can be ensured. [Solution] An imaging lens (1) comprises six lenses in the following order from the object side: a negative first lens (L1); a positive second lens (L2); a negative third lens (L3); a positive fourth lens (L4); a positive fifth lens (L5); and a negative sixth lens (L6). Conditional expression (1) is satisfied, wherein f is the focal length of the entire system, and f5 is the focal length of the fifth lens (L5). 2.38 < f5/f... (1) |
