LENS MODULE

• US 20160124189A1
• Filed: 03/20/2015
• Published: 05/05/2016
• Est. Priority Date: 10/30/2014
• Status: Active Grant

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: PARK, Il Yong
• Granted Patent: US 10,073,245 B2
• 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 lens module includes 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 having a concave object-side surface and a concave image-side surface, and a sixth lens having refractive power and a concave image-side surface. The first to sixth lenses are sequentially disposed from an object side to an image side.

Claims

1. A lens module 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 a concave object-side surface and a concave image-side surface; and

a sixth lens having refractive power and a concave image-side surface,

wherein the first to sixth lenses are sequentially disposed from an object side to an image side.

2. The lens module of claim 1, wherein the first lens has a convex object-side surface.

3. The lens module of claim 1, wherein the first lens has a concave image-side surface.

4. The lens module of claim 1, wherein the second lens has a convex object-side surface.

5. The lens module of claim 1, wherein the second lens has a concave image-side surface.

6. The lens module of claim 1, wherein the third lens has a convex object-side surface.

7. The lens module of claim 1, wherein the fourth lens has a concave object-side surface.

8. The lens module of claim 1, wherein the fourth lens has a convex image-side surface.

9. The lens module of claim 1, wherein the sixth lens has a convex object-side surface.

10. A lens module comprising:

a first lens having positive refractive power;

a second lens having refractive power and a convex object-side surface;

a third lens having positive refractive power;

a fourth lens having positive refractive power;

a fifth lens having refractive power and a concave image-side surface; and

a sixth lens having positive refractive power,

wherein the first to sixth lenses are sequentially disposed from an object side to an image side.

11. The lens module of claim 10, wherein the refractive power of the second lens is negative.

12. The lens module of claim 10, wherein the refractive power of the fifth lens is negative.

13. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

0.5<

f1/f<

0.9 

 

[Conditional Expression]

where f is an overall focal length of the lens module and f1 is a focal length of the first lens.

14. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

20<

V1−

V2<

45 

 

[Conditional Expression]

where V1 is an Abbe number of the first lens, and V2 is an Abbe number of the second lens.

15. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

|V1−

V3|<

15 

 

[Conditional Expression]

where V1 is an Abbe number of the first lens, and V3 is an Abbe number of the third lens.

16. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

25<

V1−

V5<

45 

 

[Conditional Expression]

where V1 is an Abbe number of the first lens, and V5 is an Abbe number of the fifth lens.

17. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

−

5.0<

f2/f<

0 

 

[Conditional Expression]

where f is an overall focal length of the lens module, and f2 is a focal length of the second lens.

18. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

0<

f3/f<

6.0 

 

[Conditional Expression]

where f is an overall focal length of the lens module, and f3 is a focal length of the third lens.

19. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

2.0<

f4/f 

 

[Conditional Expression]

where f is an overall focal length of the lens module, and f4 is a focal length of the fourth lens.

20. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

f5/f<

−

1.0 

 

[Conditional Expression]

where f is an overall focal length of the lens module, and f5 is a focal length of the fifth lens.

21. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

OAL/f<

1.5 

 

[Conditional Expression]

where f is an overall focal length of the lens module, and OAL is a distance from an object-side surface of the first lens to an image-sensing surface.

22. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

−

1.0<

f1/f2<

0.0 

 

[Conditional Expression]

where f1 is a focal length of the first lens, and f2 is a focal length of the second lens.

23. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

−

1.0<

f2/f3<

0.0 

 

[Conditional Expression]

where f2 is a focal length of the second lens, and f3 is a focal length of the third lens.

24. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

BFL/f<

0.5 

 

[Conditional Expression]

where f is an overall focal length of the lens module, and BFL is a distance from an image-side surface of the sixth lens to an image-sensing surface.

25. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

D3/f<

0.1 

 

[Conditional Expression]

where f is an overall focal length of the lens module, and D3 is a distance from an image-side surface of the first lens to the object-side surface of the second lens.

26. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

0<

r3/f<

10.0 

 

[Conditional Expression]

where f is an overall focal length of the lens module, and r3 is a radius of curvature of an image-side surface of the first lens.

27. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

0<

r11/f<

5.0 

 

[Conditional Expression]

where f is an overall focal length of the lens module, and r11 is a radius of curvature of the concave image-side surface of the fifth lens.

28. The lens module of claim 10, wherein the following Conditional Expression is satisfied:

1.0<

(EPD/2)/f12 

 

[Conditional Expression]

where EPD is an entrance pupil diameter, and f12 is a synthetic focal length of the first and second lenses.

29. A lens module comprising:

a first lens having refractive power;

a second lens having refractive power and a convex object-side surface;

a third lens having positive refractive power;

a fourth lens having positive refractive power and a concave object-side surface;

a fifth lens having refractive power and a concave image-side surface; and

a sixth lens having positive refractive power, wherein the first to sixth lenses are sequentially disposed from an object side to an image side.