| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical imaging lens having a reduced length, while having excellent optical characteristics, and capable of disposing five lenses in it.SOLUTION: Refractive power of an optical imaging lens includes refractive power of, in order from an object side, first to fifth lens elements only. The first lens element 110 has positive refractive power and has a convex surface on the object side that forms a convex portion near an optical axis and a convex portion near a peripheral part. The second lens element 120 has negative refractive power and has a surface on an image side that forms a concave portion near a peripheral part. The third lens element 130 has a surface on the object side that forms a convex portion near a peripheral part. The fourth lens element 140 has positive refractive power and has a surface on the object side that forms a concave portion near a peripheral part and a convex surface on the image side that forms a convex portion near the optical axis and a convex portion near a peripheral part. The fifth lens element 150 has a surface on the image side that forms a concave portion near the optical axis and forms a convex portion near a peripheral part. |
