US 2017/0285302 A1Published application

Optical image capturing system

AssigneeAbility Opto-Electronics Technology Co., Ltd.

InventorsCHIEN-HSUN LAI, NAI-YUAN TANG, YEONG-MING CHANG

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Abstract

An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. At least one lens among the first to the fifth lenses has positive refractive force. The fifth lens can have negative refractive force, wherein both surfaces thereof are aspheric, and at least one surface thereof has an inflection point. The lenses in the optical image capturing system which have refractive power include the first to the fifth lenses. The optical image capturing system can increase aperture value and improve the imaging 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 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 one lens among the first lens to the fifth lens has positive refractive power each lens among the first lens to the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;
the image-side surface of the first lens has a first image-side bearing surface;
the object-side surface of the second lens has a second object-side bearing surface, and the image-side surface of the second lens has a second image-side bearing surface, wherein the second object-side bearing surface and the first image-side bearing surface contact each other,
wherein the optical image capturing system satisfies:
1.0≦f/HEP≦10.0;
0 deg<HAF≦150 deg;
and
0.5≦SETP/STP<1;
where f1, f2 f3, f4, and f5 are focal lengths of the first lens to the fifth lens, respectively;
f is a focal length of the optical image capturing system;
HEP is an entrance pupil diameter of the optical image capturing system;
HOI is a maximum height for image formation on the image plane;
HOS is a distance between a point on the object-side surface of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through on the optical axis;
InTL is a distance from the object-side surface of the first lens to the image-side surface of the fifth lens on the optical axis;
HAF is a half of a maximum view angle of the optical image capturing system;
ETP1, ETP2, ETP3, ETP4, and ETP5 are respectively a thickness at the height of ½ HEP of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens;
SETP is a sum of the aforementioned ETP1 to ETP5;
TP1, TP2, TP3, TP4, and TP5 are respectively a thickness of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens on the optical axis;
STP is a sum of the aforementioned TP1 to TP5.

23 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 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;
each lens among the first lens to the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;
the image-side surface of the first lens has a first image-side bearing surface;
the object-side surface of the second lens has a second object-side bearing surface, and the image-side surface of the second lens has a second image-side bearing surface, wherein the second object-side bearing surface and the first image-side bearing surface contact each other, the object-side surface of the third lens has a third object-side bearing surface, and the image-side surface of the third lens has a third image-side bearing surface, wherein the third object-side bearing surface and the second image-side bearing surface contact each other;
an extension line of each image-side bearing surface among the first to the second image-side bearing surfaces intersects the optical axis at an included angle IAG;
the included angles are respectively denoted as IAG1 and IAG2 for the first to the second image-side bearing surfaces;
an extension line of each object-side bearing surface among the second to the third object-side bearing surfaces intersects the optical axis at an included angle OAG;
the included angles are respectively denoted as OAG2 and OAG3 for the second to the third object-side bearing surfaces;
wherein the optical image capturing system satisfies:
0 deg<IAG≦90 deg;
0 deg<OAG≦90 deg;
1.0≦f/HEP≦10.0;
0 deg<HAF≦150 deg;
and
0.2≦EIN/ETL<1;
where f1, f2 f3, f4, and f5 are focal lengths of the first lens to the fifth lens, respectively;
f is a focal length of the optical image capturing system;
HEP is an entrance pupil diameter of the optical image capturing system;
HOI is a maximum height for image formation on the image plane;
HAF is a half of a maximum view angle of the optical image capturing system;
HOS is a distance between a point on the object-side surface of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through on the optical axis;
InTL is a distance from the object-side surface of the first lens to the image-side surface of the fifth lens on the optical axis;
ETL is a distance in parallel with the optical axis between a coordinate point at a height of ½ HEP on the object-side surface of the first lens and the image plane;
EIN is a distance in parallel with the optical axis between the coordinate point at the height of ½ HEP on the object-side surface of the first lens and a coordinate point at a height of ½ HEP on the image-side surface of the fifth lens.

27 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 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 having refractive power;
each lens among the first lens to the fifth lens has an object-side surface, which faces the object side, and an image-side surface, which faces the image side;
the image-side surface of the first lens has a first image-side bearing surface;
the object-side surface of the second lens has a second object-side bearing surface, and the image-side surface of the second lens has a second image-side bearing surface, wherein the second object-side bearing surface and the first image-side bearing surface contact each other;
the object-side surface of the third lens has a third object-side bearing surface, and the image-side surface of the third lens has a third image-side bearing surface, wherein the third object-side bearing surface and the second image-side bearing surface contact each other;
the object-side surface of the fourth lens has a fourth object-side bearing surface, and the image-side surface of the fourth lens has a fourth image-side bearing surface, wherein the fourth object-side bearing surface and the third image-side bearing surface contact each other;
an extension line of each image-side bearing surface among the first to the third image-side bearing surfaces intersects the optical axis at an included angle IAG;
the included angles are respectively denoted as IAG1, IAG2, and IAG3 for the first to the third image-side bearing surfaces;
an extension line of each object-side bearing surface among the second to the fourth object-side bearing surfaces intersects the optical axis at an included angle OAG;
the included angles are respectively denoted as OAG2, OAG3, and OAG4 for the second to the fourth object-side bearing surfaces;
wherein the optical image capturing system satisfies:
0 deg<IAG≦45 deg;
0 deg<OAG≦45 deg;
1.0<f/HEP≦10;
0 deg<HAF≦150 deg;
and
0.2≦EIN/ETL<1;
where f1, f2 f3, f4, and f5 are focal lengths of the first lens to the fifth lens, respectively;
f is a focal length of the optical image capturing system;
HEP is an entrance pupil diameter of the optical image capturing system;
HOS is a distance between a point on the object-side surface of the first lens where the optical axis passes through and a point on the image plane where the optical axis passes through on the optical axis;
InTL is a distance from the object-side surface of the first lens to the image-side surface of the fifth lens on the optical axis;
HAF is a half of a maximum view angle of the optical image capturing system;
ETL is a distance in parallel with the optical axis between a coordinate point at a height of ½ HEP on the object-side surface of the first lens and the image plane;
EIN is a distance in parallel with the optical axis between the coordinate point at the height of ½ HEP on the object-side surface of the first lens and a coordinate point at a height of ½ HEP on the image-side surface of the fifth lens.

28 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/363,161Filed 29 Nov 2016
Priority: TW 10511029431 Mar 2016
Published: 5 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

G02B 13/0045
Having at least one aspherical surface: having five or more lenses
G02B 5/005
Optical elements other than lenses: diaphragms
G02B 5/208
Filters: for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
G02B 9/60
Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -: having five…

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US 10,338,347 B2Related patent
US 2017/0285302 A1This patent

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