Optical image capturing lens assembly
An optical image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with refractive power has a concave object-side surface, and the object-side surface changes from concave at a paraxial region to convex at a peripheral region. The second lens element has refractive power. The third lens element has positive refractive power. The fourth lens element has negative refractive power. The fifth lens element with positive refractive power has a convex object-side surface and a concave image-side surface, wherein the image-side surface changes from concave at a paraxial region to convex at a peripheral region. The object-side surfaces and the image-side surfaces of the first and fifth lens elements are aspheric.
1. An optical image capturing lens assembly comprising, in order from an object side to an image side:
a first lens element with refractive power having a concave object-side surface at a paraxial region, wherein the object-side surface of the first lens element changes from concave at the paraxial region to convex at a peripheral region, and the object-side surface and an image-side surface of the first lens element are aspheric;
a second lens element with refractive power;
to a third lens element with positive refractive power;
a fourth lens element with negative refractive power; and
a fifth lens element with positive refractive power having a convex object-side surface at a paraxial region and a concave image-side surface at a paraxial region, wherein the image-side surface of the fifth lens element changes from concave at the paraxial region to convex at a peripheral region, and the object-side surface and the image-side surface of the fifth lens element are aspheric.
2. The optical image capturing lens assembly of claim 1 , wherein an object-side surface of the fourth lens element is concave at a paraxial region, and an image-side surface of the fourth lens element is convex at a paraxial region.
3. The optical image capturing lens assembly of claim 2 , wherein the image-side surface of the first lens element is convex at a paraxial region, and an image-side surface of the third lens element is convex at a paraxial region.
4. The optical image capturing lens assembly of claim 3 , wherein a minimum distance between an optical axis and a non-axial critical point on the image-side surface of the fifth lens element is Yc52, an optical effective radius of the image-side surface of the fifth lens element is Y52, and the following relationship is satisfied:
0.60 <|Yc 52 /Y 52|≦1.0.
5. The optical image capturing lens assembly of claim 4 , wherein a focal length of the optical image capturing lens assembly is f, a focal length of the first lens element is f1, a focal length of the second lens element is f2, and the following relationship is satisfied:
0 <|f/f 1 |+|f/f 2|<0.8.
6. The optical image capturing lens assembly of claim 4 , wherein an optical effective radius of the object-side surface of the first lens element is Y11, the optical effective radius of the image-side surface of the fifth lens element is Y52, and the following relationship is satisfied:
0.7 <|Y 11 /Y 52|<1.2.
7. The optical image capturing lens assembly of claim 4 , wherein a curvature radius of the image-surface of the third lens element is R6, a central thickness of the third lens element is CT3, and the following relationship is satisfied:
−1.3 <R 6 /CT 3<−0.50.
8. The optical image capturing lens assembly of claim 2 , wherein a minimum distance between an optical axis and a non-axial critical point on the object-side surface of the first lens element is Yc11, an optical effective radius of the object-side surface of the first lens element is Y11, and the following relationship is satisfied:
0.55 <|Yc 11 /Y 11|≦1.0.
9. The optical image capturing lens assembly of claim 8 , wherein the minimum distance between the optical axis and the non-axial critical point on the object-side surface of the first lens element is Yc11, a distance parallel to the optical axis between the optical axis and the non-axial critical point on the object-side surface of the first lens element is SAGc11, wherein SAGc11/Yc11 is a tangent value of an angle θ 1 , and the following relationship is satisfied:
0<tan θ 1 <0.30.
10. The optical image capturing lens assembly of claim 3 , wherein the first lens element has positive refractive power.
11. The optical image capturing lens assembly of claim 10 , wherein an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, and the following relationship is satisfied:
25.0 <V 3 −V 4<48.0.
12. The optical image capturing lens assembly of claim 10 , wherein a maximal field of view of the optical image capturing lens assembly is FOV, and the following relationship is satisfied:
80 degrees<FOV<115 degrees.
13. The optical image capturing lens assembly of claim 12 , wherein a maximal distortion of an imaging range of the optical image capturing lens assembly is Dist_max, and the following relationship is satisfied:
|Dist_max|<3%.
14. The optical image capturing lens assembly of claim 10 , wherein a minimum distance between an optical axis and a non-axial critical point on the object-side surface of the first lens element is Yc11, a distance parallel to the optical axis between the optical axis and the non-axial critical point on the object-side surface of the first lens element is SAGc11, a minimum distance between the optical axis and a non-axial critical point on the image-side surface of the fifth lens element is Yc52, a distance parallel to the optical axis between the optical axis and the non-axial critical point on the image-side surface of the fifth lens element is SAGc52, wherein SAGc11/Yc11 is a tangent value of the angle θ 1 , SAGc52/Yc52 is a tangent value of an angle θ 2 , and the following relationship is satisfied:
tan θ 1 <tan θ 2 .
15. The optical image capturing lens assembly of claim 10 , wherein a curvature radius of the object-side surface of the first lens element is Ro1, a curvature radius of the image-side surface of the first lens element is Ri1, a curvature radius of an object-side surface of the second lens element is Ro2, a curvature radius of an image-side surface of the second lens element is Ri2, a curvature radius of an object-side surface of the third lens element is Ro3, the curvature radius of the image-side surface of the third lens element is Ri3, a curvature radius of the object-side surface of the fourth lens element is Ro4, a curvature radius of the image-side surface of the fourth lens element is Ri4, a curvature radius of the object-side surface of the fifth lens element is Ro5, a curvature radius of the image-side surface of the fifth lens element is Ri5, and the following relationships are satisfied:
0 <Ro 1 /Ri 1;
0 <Ro 2 /Ri 2;
0 <Ro 3 /Ri 3;
0 <Ro 4 /Ri 4; and
0 <Ro 5 /Ri 5.
16. An optical image capturing lens assembly comprising, in order from an object side to an image side:
a first lens element with refractive power having a concave object-side surface at a paraxial region, wherein the object-side surface and an image-side surface of the first lens element are aspheric;
a second lens element with refractive power;
a third lens element with positive refractive power;
a fourth lens element with negative refractive power, and
a fifth lens element with positive refractive power having a convex object-side surface at a paraxial region and a concave image-side surface at a paraxial region, wherein the image-side surface of the fifth lens element changes from concave at the paraxial region to convex at a peripheral region, and the object-side surface and the image-side surface of the fifth lens element are aspheric;
wherein an optical effective radius of the object-side surface of the first lens element is Y11, an optical effective radius of the image-side surface of the fifth lens element is Y52, and the following relationship is satisfied:
0.7 <|Y 11 /Y 52|<1.2.
17. The optical image capturing lens assembly of claim 16 , wherein an image-side surface of the first lens element is convex at a paraxial region.
18. The optical image capturing lens assembly of claim 17 , wherein the object-side surface of the first lens element changes from concave at the paraxial region to convex at a peripheral region.
19. The optical image capturing lens assembly of claim 17 , wherein a minimum distance between an optical axis and a non-axial critical point on the object-side surface of the first lens element is Yc11, a distance parallel to the optical axis between the optical axis and the non-axial critical point on the object-side surface of the first lens element is SAGc11, wherein SAGc11/Yc11 is a tangent value of an angle θ 1 , and the following relationship is satisfied:
0<tan θ 1 <0.30.
20. The optical image capturing lens assembly of claim 17 , a focal length of the optical image capturing lens assembly is f, a focal length of the first lens element is f1, a focal length of the second lens element is f2, and the following relationship is satisfied:
0 <|f/f 1 |+|f/f 21|<0.8.
21. The optical image capturing lens assembly of claim 20 , where an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, and the following relationship is satisfied:
32.0 <V 3 −V 4<48.0.
22. The optical image capturing lens assembly of claim 20 , wherein an object-side surface of the fourth lens element is concave, and an image-side surface of the fourth lens element is convex.
23. The optical image capturing lens assembly of claim 20 , wherein a maximal field of view of the optical image capturing lens assembly is FOV, and the following relationship is satisfied:
80 degrees<FOV<115 degrees.
24. The optical image capturing lens assembly of claim 20 , wherein a maximal distortion of an imaging range of the optical image capturing lens assembly is Dist_max, and the following relationship is satisfied:
|Dist_max|<3%.
25. The optical image capturing lens assembly of claim 16 , wherein a minimum distance between an optical axis and a non-axial critical point on the object-side surface of the first lens element is Yc11, a distance parallel to the optical axis between the optical axis and the non-axial critical point on the object-side surface of the first lens element is SAGc11, a minimum distance between the optical axis and a non-axial critical point on the image-side surface of the fifth lens element is Yc52, a distance parallel to the optical axis between the optical axis and the non-axial critical point on the image-side surface of the fifth lens element is SAGc52, wherein SAGc11/Yc11 is a tangent value of an angle θ 1 , SAGc52/Yc52 is a tangent value of an angle θ 2 , and the following relationship is satisfied:
tan θ 1 <tan θ 2 .
26. An optical image capturing lens assembly comprising, in order from an object side to an image side:
a first lens element with refractive power having a concave object-side surface at a paraxial region, wherein the object-side surface of the first lens element changes from concave at the paraxial region to convex at a peripheral region, and the object-side surface and an image-side surface of the first lens element are aspheric;
a second lens element with refractive power;
a third lens element with positive refractive power;
a fourth lens element with negative refractive power, and
a fifth lens element with positive refractive power having a convex object-side surface at a paraxial region and a concave image-side surface at a paraxial region, wherein the image-side surface of the fifth lens element changes from concave at the paraxial region to convex at a peripheral region, and the object-side surface and the image-side surface of the fifth lens element are aspheric;
wherein a minimum distance between an optical axis and a non-axial critical point on the object-side surface of the first lens element is Yc11, a distance parallel to the optical axis between the optical axis and the non-axial critical point on the object-side surface of the first lens element is SAGc11, a minimum distance between the optical axis and a non-axial critical point on the image-side surface of the fifth lens element is Yc52, a distance parallel to the optical axis between the optical axis and the non-axial critical point on the image-side surface of the fifth lens element is SAGc52, wherein SAGc11/Yc11 is a tangent value of an angle θ 1 , SAGc52/Yc52 is a tangent value of an angle θ 2 , and the following relationships are satisfied:
0<tan θ 1 <0.3; and
0<tan θ 2 <0.5.
27. The optical image capturing lens assembly of claim 26 , wherein an object-side surface of the fourth lens element is concave at a paraxial region, an image-side surface of the fourth lens element is convex at a paraxial region, and the image-side surface of the first lens element is convex at a paraxial region.
28. The optical image capturing lens assembly of claim 26 , wherein an optical effective radius of the object-side surface of the first lens element is Y11, an optical effective radius of the image-side surface of the fifth lens element is Y52, and the following relationship is satisfied:
0.7 <|Y 11 /Y 52|<1.2.
29. The optical image capturing lens assembly of claim 26 , wherein a focal length of the optical image capturing lens assembly is f, a focal length of the first lens element is f1, a focal length of the second lens element is f2, and the following relationship is satisfied:
0 <|f/f 1 |+|f/f 2|<0.8.
30. The optical image capturing lens assembly of claim 26 , wherein a curvature radius of an image-side surface of the third lens element is R6, a central thickness of the third lens element is CT3, and the following relationship is satisfied:
−1.3 <R 6 /CT 3<−0.50.