| 摘要 |
The present invention provides an image pickup lens for forming an image of an object on a photoelectrical converter of a solid-state image pickup element. The image pickup lens includes: an aperture stop; a first lens having a positive refractive power and having a meniscus shape whose surface facing the object side is convex; a second lens having a negative refractive power whose surface facing an image side of the image pickup lens is concave; and a third lens having a positive refractive power and having a meniscus shape whose surface facing the object side is convex. Each of the first lens, the second lens, and the third lens includes an aspheric optical surface. The image pickup lens satisfies predetermined conditions according to a focal length of the first lens, and a refractive power of an air lens formed from surfaces of the second lens and the third lens.
|
