Image pickup lens
AssigneeKantatsu Co., Ltd.
InventorsYukio Sekine, Tomohiro Yonezawa
Life of this patent
Estimating the term…
Abstract
A wide-angle image pickup lens having small F-value, high resolution, and small distortion is provided. The image pickup lens is configured from, in order from an object side to an image side, a first lens having a positive refractive power with a concave surface facing the object side, an aperture stop, a second lens having a negative refractive power with a concave surface facing the image side, a third lens having a positive refractive power, a fourth lens having a positive refractive power with a concave surface facing the object side, and a fifth lens having a negative refractive power with a concave surface facing the image side.
Claims10
An image pickup lens, comprising, in order from an object side to an image side:
- a first lens having a positive refractive power with a concave surface facing the object side;
- an aperture stop;
- a second lens having a negative refractive power with a concave surface facing the image side;
- a third lens having a positive refractive power;
- a fourth lens having a positive refractive power with a concave surface facing the object side;
- and
- a fifth lens having a negative refractive power with a concave surface facing the image side.
Dependencies are inferred from the claim text.