US 2016/0097917 A1Published application

Optical image capturing system

AssigneeAbility Opto-Electronics Technology Co., Ltd.

InventorsKUO-YU LIAO, HUNG-KUO YU, PO-JUI LIAO, HUNG-WEN LEE, NAI-YUAN TANG, YEONG-MING CHANG

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Abstract

A five-piece optical lens for capturing image and a five-piece optical module for capturing image, along the optical axis in order from an object side to an image side, include a first lens with positive refractive power having a convex object-side surface; a second lens with refractive power; a third lens with refractive power; a fourth lens with refractive power; and a fifth lens with negative refractive power; and at least one of the image-side surface and object-side surface of each of the five lens elements are aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.

Claims25

Dependent claims

An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:

a first lens having positive refractive power;
a second lens having refractive power;
a third lens having refractive power;
a fourth lens having refractive power;
a fifth lens having refractive power;
and
an image plane;
wherein the optical image capturing system consists of the five lenses with refractive power;
at least two of the five lenses each has at least an inflection point on a surface thereof;
at least one of the lenses from the second lens to the fifth lens has positive refractive power;
the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side, and both the object-side surface and the image-side surface of the fifth lens are aspheric surfaces;
wherein the optical image capturing system satisfies:
1.2≦f/HEP≦2.8 and 0.5≦HOS/f≦2.5;
where f is a focal length of the optical image capturing system;
HEP is an entrance pupil diameter of the optical image capturing system;
and HOS is a distance in parallel with the optical axis from an object-side surface of the first lens to the image plane.

13 more elements

An optical image capturing system, in order along an optical axis from an object side to an image side, comprising:

a first lens having positive refractive power, and having at least an inflection point on an image-side surface, which faces the image side;
a second lens having refractive power;
a third lens having refractive power, and having at least an inflection point on an image-side surface, which faces the image side, and an object-side surface, which faces the object side, respectively;
a fourth lens having refractive power;
a fifth lens having refractive power, and having at least an inflection point on an image-side surface, which faces the image side, and an object-side surface, which faces the object side, respectively;
and
an image plane;
wherein the optical image capturing system consists of the five lenses having refractive power;
the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side, and both the object-side surface and the image-side surface of the fifth lens are aspheric surfaces;
wherein the optical image capturing system satisfies:
1.2≦f/HEP≦2.8;
0.4≦| tan(HAF)|≦1.5;
0.5≦HOS/f≦2.5;
|TDT|<1.5%;
and |ODT|≦2.5%;
where f is a focal length of the optical image capturing system;
HEP is an entrance pupil diameter of the optical image capturing system;
HAF is a half of a view angle of the optical image capturing system;
HOS is a distance in parallel with the optical axis between an object-side surface, which face the object side, of the first lens and the image plane;
TDT is a TV distortion;
and ODT is an optical distortion.

18 more elements

Dependencies are inferred from the claim text.