OPTICAL IMAGE CAPTURING SYSTEM

• US 20160341932A1
• Filed: 09/17/2015
• Published: 11/24/2016
• Est. Priority Date: 05/21/2015
• Status: Active Grant

• Current Assignee: Ability Opto-Electronics Technology Co., Ltd.
• Original Assignee: Ability Opto-Electronics Technology Co., Ltd.
• Inventors: LIU, YAO-WEI, TANG, NAI-YUAN, CHANG, YEONG-MING
• Granted Patent: US 9,482,847 B1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 13/0045 having five or more lenses
• CPC Class Codes: G02B 9/62 having six components only

Abstract

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

Claims

1. An optical image capturing system, from an object side to an image side, comprising:

a first lens element with refractive power,

a second lens element with refractive power,

a third lens element with refractive power,

a fourth lens element with refractive power,

a fifth lens element with refractive power,

a sixth lens element with refractive, and

an image plane,

wherein the optical image capturing system consists of the six lens elements with refractive power, at least one of the first through sixth lens elements has positive refractive power, an object-side surface and an image-side surface of the sixth lens element are aspheric, focal lengths of the first through sixth lens elements are f1, f2, f3, f4, f5 and f6 respectively, a focal length of the optical image capturing system is f, an entrance pupil diameter of the optical image capturing system is HEP, a distance from an object-side surface of the first lens element to the image plane is HOS, a distance on an optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL, a length of outline curve from an axial point on any surface of any one of the six lens elements to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE. The following relations are satisfied;

1.2≦

f/HEP≦

6.0;

0.5≦

HOS/f≦

3.0;

0<

InTL/HOS<

0.9; and

1≦

2(ARE/HEP)≦

1.5.

2. The optical image capturing system of claim 1, wherein TV distortion for image formation in the optical image capturing system is TDT, a height for image formation on the image plane perpendicular to the optical axis in the optical image capturing system is denoted by HOI, a lateral aberration of the longest operation wavelength of a positive direction tangential fan of the optical image capturing system passing through an edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as PLTA, and a lateral aberration of the shortest operation wavelength of the positive direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as PSTA, a lateral aberration of the longest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as NLTA, a lateral aberration of the shortest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as NSTA, a lateral aberration of the longest operation wavelength of a sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as SLTA, a lateral aberration of the shortest operation wavelength of the sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as SSTA. The following relations are satisfied:

PLTA≦

10 μ

m;

PSTA≦

10 μ

m;

NLTA≦

10 μ

m;

NSTA≦

10 μ

m;

SLTA≦

10 μ

m; and

SSTA≦

10 μ

m;

|TDT|<

100%.

3. The optical image capturing system of claim 1, wherein a maximum effective half diameter position of any surface of any one of the six lens elements is denoted as EHD, and a length of outline curve from an axial point on any surface of any one of the six lens elements to the maximum effective half diameter position of the surface along the outline of the surface is denoted as ARS. The following relation is satisfied:

1≦

ARS/EHD≦

1.5.

4. The optical image capturing system of claim 1, wherein the following relation is satisfied:

0 mm<

HOS≦

10 mm.

5. The optical image capturing system of claim 1, wherein a half of a maximal view angle of the optical image capturing system is HAF, and the following relation is satisfied:

0 deg<

HAF≦

70 deg.

6. The optical image capturing system of claim 1, wherein a length of outline curve from an axial point on the object-side surface of the sixth lens element to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE61;

a length of outline curve from an axial point on the image-side surface of the sixth lens element to the coordinate point of vertical height with the distance of a half of the entrance pupil diameter from the optical axis on the surface along the outline of the surface is denoted as ARE62, and a thickness of the sixth lens element on the optical axis is TP6. The following relations are satisfied;

0.5≦

ARE61/TP6≦

15; and

0.5≦

ARE62/TP6≦

15.

7. The optical image capturing system of claim 1, wherein a length of outline curve from an axial point on the object-side surface of the fifth lens element to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE51;

a length of outline curve from an axial point on the image-side surface of the fifth lens element to the coordinate point of vertical height with the distance of a half of the entrance pupil diameter from the optical axis on the surface along the outline of the surface is denoted as ARE52, and a thickness of the fifth lens element on the optical axis is TP5. The following relations are satisfied;

0.5≦

ARE51/TP5×

15; and

0.5≦

ARE52/TP5≦

15.

8. The optical image capturing system of claim 1, wherein the second lens element has a negative refractive power and the sixth lens element has a negative refractive power.

9. The optical image capturing system of claim 1, further comprising an aperture stop, a distance from the aperture stop to the image plane on the optical axis is InS, and the following relation is satisfied:

0.5≦

InS/HOS≦

1.1.

10. An optical image capturing system, from an object side to an image side, comprising:

a first lens element with positive refractive power,

a second lens element with refractive power,

a third lens element with refractive power,

a fourth lens element with refractive power,

a fifth lens element with refractive power,

a sixth lens element with refractive power, and

an image plane,

wherein the optical image capturing system consists of the six lens elements with refractive power, at least two lens elements among the first through sixth lens elements respectively have at least one inflection point on at least one surface thereof, at least one of the second through sixth lens elements has positive refractive power, an object-side surface and an image-side surface of the sixth lens element are aspheric, focal lengths of the first through sixth lens elements are f1, f2, f3, f4, f5 and f6, respectively, a focal length of the optical image capturing system is f, an entrance pupil diameter of the optical image capturing system is HEP, a distance from an object-side surface of the first lens element to the image plane is HOS, a distance on an optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL, a length of outline curve from an axial point on any surface of any one of the six lens elements to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE. The following relations are satisfied;

1.2≦

f/HEP≦

6.0;

0.5≦

HOS/f≦

3.0;

0<

InTL/HOS<

0.9; and

1≦

2(ARE/HEP)≦

1.5.

11. The optical image capturing system of claim 10, wherein a maximum effective half diameter position of any surface of any one of the six lens elements is denoted as EHD, and a length of outline curve from an axial point on any surface of any one of the six lens elements to the maximum effective half diameter position of the surface along the outline of the surface is denoted as ARS. The following relation is satisfied:

1≦

ARS/EHD≦

1.5.

12. The optical image capturing system of claim 10, wherein the sixth lens element has a negative refractive power, and at least one surface among the object-side surface and the image-side surface of the sixth lens element has at least one inflection point.

13. The optical image capturing system of claim 10, wherein a height for image formation on the image plane perpendicular to the optical axis in the optical image capturing system is denoted by HOI, a lateral aberration of the longest operation wavelength of a positive direction tangential fan of the optical image capturing system passing through an edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as PLTA, and a lateral aberration of the shortest operation wavelength of the positive direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as PSTA, a lateral aberration of the longest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as NLTA, a lateral aberration of the shortest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as NSTA, a lateral aberration of the longest operation wavelength of a sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as SLTA, a lateral aberration of the shortest operation wavelength of the sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident on the image plane by 0.7 HOI is denoted as SSTA. The following relations are satisfied:

PLTA≦

10 μ

m;

PSTA≦

10 μ

m;

NLTA≦

10 μ

m;

NSTA≦

10 μ

m;

SLTA≦

10 μ

m; and

SSTA≦

10 μ

m.

14. The optical image capturing system of claim 10, wherein the second lens element has a negative refractive power and the fifth lens element has a positive refractive power.

15. The optical image capturing system of claim 10, wherein a distance between the first lens element and the second lens element on the optical axis is IN12, and the following relation is satisfied:

0<

IN12/f≦

0.8.

16. The optical image capturing system of claim 10, wherein a distance between the fifth lens element and the sixth lens element on the optical axis is IN56, and the following relation is satisfied:

0<

IN56/f≦

0.8.

17. The optical image capturing system of claim 10, wherein the distance from the fifth lens element to the sixth lens element on the optical axis is IN56, a thickness of the fifth lens element and a thickness of the sixth lens element on the optical axis respectively are TP5 and TP6, and the following relation is satisfied:

1≦

(TP6+IN56)/TP5≦

10.

18. The optical image capturing system of claim 10, wherein the distance from the first lens element to the second lens element on the optical axis is IN12, a thickness of the first lens element and a thickness of the second lens element on the optical axis respectively are TP1 and TP2, and the following relation is satisfied:

1≦

(TP1+IN12)/TP2≦

10.

19. The optical image capturing system of claim 10, wherein a distance from the third lens element to the fourth lens element on the optical axis is IN34, a distance from the fourth lens element to the fifth lens element on the optical axis is IN45, a thickness of the fourth lens element on the optical axis is TP4, and the following relation is satisfied:

0<

TP4/(IN34+TP4+IN45)<

1.

20. An optical image capturing system, from an object side to an image side, comprising:

a first lens element with positive refractive power,

a second lens element with refractive power,

a third lens element with refractive power,

a fourth lens element with negative refractive power,

a fifth lens element with refractive power,

a sixth lens element with negative refractive power, and at least one surface among an object-side surface and an image-side surface of the sixth lens element having at least one inflection point, and

an image plane, wherein the optical image capturing system consists of the six lens elements with refractive power, at least two lens elements among the first through fifth lens elements respectively have at least one inflection point on at least one surface thereof, an object-side surface and an image-side surface of the fifth lens element are aspheric, an object-side surface and an image-side surface of the sixth lens element are aspheric, focal lengths of the first through sixth lens elements are f1, f2, f3, f4, f5 and f6, respectively, a focal length of the optical image capturing system is f, an entrance pupil diameter of the optical image capturing system is HEP, a half of maximum view angle of the optical image capturing system is HAF, a distance from an object-side surface of the first lens element to the image plane is HOS, a distance on an optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL, a length of outline curve from an axial point on any surface of any one of the six lens elements to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE. The following relations are satisfied;

1.2≦

f/HEP≦

3.5;

0.4≦

|tan(HAF)|≦

1.5;

0.5≦

HOS/f≦

2.5;

0<

InTL/HOS<

0.9 and 1≦

2(ARE/HEP)≦

1.5.

21. The optical image capturing system of claim 20, wherein a maximum effective half diameter position of any surface of any one of the four lens elements is denoted as EHD, and a length of outline curve from an axial point on any surface of any one of the six lens elements to the maximum effective half diameter position of the surface along the outline of the surface is denoted as ARS. The following relation is satisfied:

1≦

ARS/EHD≦

1.5.

22. The optical image capturing system of claim 20, wherein the following relation is satisfied:

0 mm<

HOS≦

10 mm.

23. The optical image capturing system of claim 20, wherein a length of outline curve from an axial point on the object-side surface of the sixth lens element to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE61;

a length of outline curve from an axial point on the image-side surface of the sixth lens element to the coordinate point of vertical height with the distance of a half of the entrance pupil diameter from the optical axis on the surface along the outline of the surface is denoted as ARE62, and a thickness of the sixth lens element on the optical axis is TP6. The following relations are satisfied;

0.5≦

ARE61/TP6≦

15; and

0.5≦

ARE62/TP6≦

15.

24. The optical image capturing system of claim 20, wherein a length of outline curve from an axial point on the object-side surface of the fifth lens element to a coordinate point of vertical height with a distance of a half of the entrance pupil diameter from the optical axis on the surface along an outline of the surface is denoted as ARE51;

a length of outline curve from an axial point on the image-side surface of the fifth lens element to the coordinate point of vertical height with the distance of a half of the entrance pupil diameter from the optical axis on the surface along the outline of the surface is denoted as ARE52, and a thickness of the fifth lens element on the optical axis is TP5. The following relations are satisfied;

0.5≦

ARE51/TP5≦

15; and

0.5≦

ARE52/TP5≦

15.

25. The optical image capturing system of claim 20, wherein the optical image capturing system further comprise an aperture stop, an image sensing device and a driving module, the image sensing device is disposed on the image plane, a distance from the aperture stop to the image plane is InS, and the driving module may couple with the lens elements to displace the lens elements. The following relation is satisfied:

0.5≦

InS/HOS≦

1.1.