| 摘要 |
An embodiment of the present invention is to provide an image pickup lens comprising: a first lens to a sixth lens sequentially arranged from the object side to the image side wherein curvature of a first surface in the object direction of a third lens is bigger than a curvature of a second surface in the image direction of a third lens; and a synthetic focus of a fourth and a fifth lens bigger than one and smaller than three, a refractive index of the fourth and the fifth lens equal or less than 1.7, and the back side of the sixth lens having an inflection point, thereby providing the embodiment with a high performance image pickup lens with low manufacturing costs. |
