| 摘要 |
An imaging lens of which various aberrations are corrected well, optical length is short, and back focus is sufficiently secured, is provided. The imaging lens is formed of a first lens L1, an aperture stop S, a second lens L2 and a third lens L3, arranged in this sequence from the object side to the image side. The first lens L1 is a meniscus lens having a positive refractive power, of which convex surface faces the object side, the second lens L2 is a meniscus lens having a positive or negative refractive power, of which convex surface faces the image side, and the third lens L3 is a meniscus lens having a negative refractive power, of which convex surface faces the object side. The Abbe number &ngr; of the second lens L2 is a value in a 50.0 to 60.0 range.
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