| 摘要 |
An image pickup lens having the following disposed from an object side in the order listed below: a first lens having a negative meniscus shape with a concave surface on an image side, a second lens having a negative meniscus shape with a concave surface on the object side adjacent to an optical axis, a third positive lens having a convex surface on the image side adjacent to the optical axis, an aperture, and a fourth lens having a bi-convex shape adjacent to the optical axis. Each of the second, third, and fourth lenses has an aspherical surface on each side. |
