Optical imaging lens and electronic device comprising the same
An optical imaging lens set includes a first lens element having an image-side surface with a convex part in a vicinity of its periphery, a second lens element with negative refractive power having an image-side surface with a concave part in a vicinity of the optical axis, a third lens element having an object-side surface with a concave part in a vicinity of the optical axis, a fourth lens element having an image-side surface with a convex part in a vicinity of the optical axis, a fifth lens element having an image-side surface with a concave part in a vicinity of the optical axis, and a sixth lens element having an image-side surface with a convex part in a vicinity of its periphery.
1. An optical imaging lens set, from an object side toward an image side in order along an optical axis comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element, each of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element having refractive power, an object-side surface facing toward the object side as well as an image-side surface facing toward the image side, wherein:
the first lens element has an image-side surface with a convex part in a vicinity of its periphery;
the second lens element with negative refractive power has an object-side surface with a convex part in a vicinity of the optical axis, and an image-side surface with a concave part in a vicinity of the optical axis and a concave part in a vicinity of its periphery;
the third lens element has an object-side surface with a concave part in a vicinity of the optical axis;
the fourth lens element has an image-side surface with a convex part in a vicinity of the optical axis;
the fifth lens element has an image-side surface with a concave part in a vicinity of the optical axis;
the sixth lens element being made of plastic, has an image-side surface with a concave part in a vicinity of the optical axis and a convex part in a vicinity of its periphery; and
the optical imaging lens set not including any lens element with refractive power other than said first lens element, second lens element, third lens element, fourth lens element, fifth lens element and sixth lens element, in addition, an air gap AC12 between said first lens element and said second lens element along said optical axis, an air gap AC56 between said fifth lens element and said sixth lens element along said optical axis, and a total thickness ALT of said first lens element, said second lens element, said third lens element, said fourth lens element, said fifth lens element and said sixth lens element along said optical axis satisfy a relationship
4.50
≤
ALT
AC
12
+
AC
56
≤
17.00
.
2. The optical imaging lens set of claim 1 , wherein an air gap AC34 between said third lens element and said fourth lens element along said optical axis, an air gap AG45 between said fourth lens element and said fifth lens element along said optical axis, and a sum of all five air gaps AAG between each lens element from said first lens element to said sixth lens element along the optical axis satisfy a relationship
AAG
AC
34
+
AC
45
≤
5.6
.
3. The optical imaging lens set of claim 2 , wherein a thickness CT5 of said fifth lens element along said optical axis satisfies a relationship
AC
12
+
AC
56
CT
5
≤
1.50
.
4. The optical imaging lens set of claim 2 , wherein the fifth lens element has negative refractive power.
5. The optical imaging lens set of claim 1 , wherein an air gap AC34 between said third lens element and said fourth lens element along said optical axis, and an air gap AG45 between said fourth lens element satisfy a relationship
AC
12
+
AC
56
AC
34
+
AC
45
≤
2.00
.
6. The optical imaging lens set of claim 5 , wherein a thickness CT6 of said sixth lens element along said optical axis and AC34 satisfy a relationship
AC
34
CT
6
≤
1.00
.
7. The optical imaging lens set of claim 6 , wherein a thickness CT3 of said third lens element along said optical axis satisfies a relationship
6.00
≤
ALT
CT
3
≤
12.00
.
8. The optical imaging lens set of claim 1 , wherein an air gap AC23 between said second lens element and said third lens element along said optical axis, an air gap AC34 between said third lens element and said fourth lens element along said optical axis, and an air gap AG45 between said fourth lens element and said fifth lens element along said optical axis satisfy a relationship
0.95
≤
AC
23
+
AC
45
AC
34
≤
4.00
.
9. The optical imaging lens set of claim 8 , wherein a thickness CT3 of said third lens element along said optical axis, and a thickness CT5 of said fifth lens element along said optical axis satisfy a relationship
1
≤
CT
5
CT
3
≤
2.10
.
10. The optical imaging lens set of claim 1 , wherein a sum of all five air gaps AAG between each lens element from said first lens element to said sixth lens element along the optical axis satisfies a relationship
2.00
≤
ALT
AAG
≤
3.80
.
11. The optical imaging lens set of claim 10 , wherein a thickness CT1 of said first lens element along said optical axis, and a thickness CT3 of said third lens element along said optical axis satisfy a relationship
1.30
≤
CT
1
CT
3
≤
2.50
.
12. The optical imaging lens set of claim 1 , wherein the object-side surface of the second lens element further comprises a convex part in a vicinity of its periphery.
13. An electronic device, comprising:
a case; and
an image module disposed in said case and comprising:
an optical imaging lens set of claim 1 ;
a barrel for the installation of said optical imaging lens set;
a module housing unit for the installation of said barrel;
a substrate for the installation of said module housing unit; and
an image sensor disposed on the substrate and disposed at an image side of said optical imaging lens set.