Image pickup lens
AssigneeHon Hai Precision Industry Co., Ltd.
InventorMING-LIN LEE
Life of this patent
Estimating the term…
Abstract
An image pickup lens comprises a first lens having negative refractive power, a second lens having positive refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, and a fifth lens having negative refractive power, from an object side to an image side. The image pickup lens has an optical axis. A portion of a surface of the first lens facing the object side and close to the axis is convex, a portion of a surface of the first lens facing the image side and close to the axis is concave. A portion of a surface of the fourth lens facing the object side and close to the axis is convex, a portion of a surface of the fourth lens facing the image side and close to the axis is convex. The image pickup lens has large field of view and small volume.
Claims15
An image pickup lens comprising:
- a first lens having a negative refractive power;
- a second lens having a positive refractive power;
- a third lens having a negative refractive power;
- a fourth lens having a positive refractive power;
- a fifth lens having a negative refractive power;
- and
- an imaging plane;
- wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the imaging plane are arranged in that sequence from an object side to an image side of the image pickup lens, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens have a same optical axis;
- wherein, the first lens comprises a first surface facing the object side, and a second surface facing the image side, a portion of the first surface close to where the optical axis passes through is a convex surface, a portion of the second surface close to where the optical axis passes through is a concave surface;
- wherein, the fourth lens comprises a seventh surface facing the object side, and an eighth surface facing the image side, a portion of the seventh surface close to where the optical axis passes through is a convex surface, a portion of the eighth surface close to where the optical axis passes through is a convex surface;
- wherein, the fifth lens comprises a ninth surface facing the object side, and a tenth surface facing the image side, at least one of the ninth surface and the tenth surface is an aspherical surface.
Dependencies are inferred from the claim text.