| 摘要 |
In an image pickup lens 1 composed three glass lenses, the glass lenses are composed of a first lens L1 having a convex surface facing a subject side and positive refracting power, an aperture S, a second lens L2 having a convex surface facing an image side and negative refracting power, and a third lens L3 having a concave surface facing the image side and positive refracting power which are disposed sequentially from the subject side as well as all the lens surfaces are composed of aspheric surfaces and the following conditional formulas (A0) and (A1) are satisfied. f / f �¢ 2 < - 0.9 2 < R �¢ 21 - R �¢ 22 / | R �¢ 21 + R �¢ 22 | < 5 With this arrangement, there is provided a compact and less expensive image pickup lens having a good optical performance and used to a solid image pickup device and an image pickup device using the image pickup lens. |
