Optical imaging lens

1. An optical imaging lens, 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, said first lens element to said sixth lens element each having an object-side surface facing toward the object side as well as an image-side surface facing toward the image side, wherein:

said first lens element has negative refractive power;

said second lens element has negative refractive power;

said third lens element has positive refractive power;

said fourth lens element has an object-side surface with a convex portion in a vicinity of the optical axis; and

said fifth lens element has an image-side surface with a concave portion in a vicinity of the optical axis;

wherein, at least one lens element of the six lens elements disposed adjacent to an aperture stop has positive refractive power and made by glass material, except for the lens elements with glass material, other lens elements are plastic lens elements, the optical imaging lens exclusively has six lens elements with refractive power, the Abbe number of the second lens element is ν2, the Abbe number of the third lens element is ν3, G 34 is an air gap between said third lens element and said fourth lens element along said optical axis, T 4 is a thickness of said fourth lens element along said optical axis, an air gap is disposed between said fourth lens element and said fifth lens element, and the optical imaging lens satisfies the following condition: |ν2−ν3|≤15.000 and T 4 /G 34 ≤10.000.

2. The optical imaging lens of claim 1 , wherein G 12 is an air gap between said first lens element and said second lens element along said optical axis, G 23 is an air gap between said second lens element and said third lens element along said optical axis, and the optical imaging lens satisfies the relationship: G 12 /G 45 ≤12.000.

3. The optical imaging lens of claim 1 , wherein T 2 is a thickness of said second lens element along said optical axis, and the optical imaging lens satisfies the relationship:G 34 /T 2 ≤5.000.

4. The optical imaging lens of claim 1 , wherein G 23 is an air gap between said second lens element and said third lens element along said optical axis, T 2 is a thickness of said second lens element along said optical axis, and the optical imaging lens satisfies the relationship:G 23 /T 2 ≤2.500.

5. The optical imaging lens of claim 1 , wherein G 45 is an air gap between said fourth lens element and said fifth lens element along said optical axis, and the optical imaging lens satisfies the relationship: T 4 /G 45 ≤10.000.

6. The optical imaging lens of claim 1 , wherein G 23 is an air gap between said second lens element and said third lens element along said optical axis, T 5 is a thickness of said fifth lens element along said optical axis, and the optical imaging lens satisfies the relationship: G 23 /T 5 ≤3.500.

7. The optical imaging lens of claim 1 , wherein G 45 is an air gap between said fourth lens element and said fifth lens element along said optical axis, T 6 is a thickness of said sixth lens element along said optical axis, and the optical imaging lens satisfies the relationship:T 6 /G 45 ≤5.300.

8. The optical imaging lens of claim 1 , wherein G 56 is an air gap between said fifth lens element and said sixth lens element along said optical axis, T 5 is a thickness of said fifth lens element along said optical axis, T 6 is a thickness of said sixth lens element along said optical axis, and the optical imaging lens satisfies the relationship:(T 5 +G 56 +T 6 )/G 34 ≤3.900.

9. The optical imaging lens of claim 1 , wherein the distance between the image-side surface of said sixth lens element and an image plane along said optical axis is BFL, T 1 is a thickness of said first lens element along said optical axis, and the optical imaging lens satisfies the relationship: BFL/T 1 ≤5.500.

10. The optical imaging lens of claim 1 , wherein AAG is a sum of all five air gaps between each lens elements from said first lens element to said sixth lens element along said optical axis, T 1 is a thickness of said first lens element along said optical axis, and the optical imaging lens satisfies the relationship: AAG/T 1 ≤5.000.

11. The optical imaging lens of claim 1 , wherein the distance from said object-side surface of said first lens element to said image-side surface of said sixth lens element along said optical axis is TL, T 1 is a thickness of said first lens element along said optical axis, and the optical imaging lens satisfies the relationship: TL/T 1 ≤15.000.

12. The optical imaging lens of claim 1 , wherein TTL is a distance from said object-side surface of said first lens element to an image plane, T 3 is a thickness of said third lens element along said optical axis, and the optical imaging lens satisfies the relationship: TTL/T 3 ≤11.000.

13. The optical imaging lens of claim 1 , wherein EFL is an effective focal length of the optical imaging lens, T 3 is a thickness of said third lens element along said optical axis, and the optical imaging lens satisfies the relationship:T 3 /EFL≤3.100.

14. The optical imaging lens of claim 1 , wherein ALT is a total thickness of all six lens elements along said optical axis, the distance between the image-side surface of said sixth lens element and an image plane along said optical axis is BFL, and the optical imaging lens satisfies the relationship: ALT/BFL≤5.300.

15. The optical imaging lens of claim 1 , wherein the distance from said object-side surface of said first lens element to said image-side surface of said sixth lens element along said optical axis is TL, the distance between the image-side surface of said sixth lens element and an image plane along said optical axis is BFL, and the optical imaging lens satisfies the relationship: TUBFL≤6.200.

16. The optical imaging lens of claim 1 , wherein TTL is a distance from said object-side surface of said first lens element to an image plane, ALT is a total thickness of all six lens elements along said optical axis, and the optical imaging lens satisfies the relationship: TTL/ALT≤2.300.

17. The optical imaging lens of claim 1 , ALT is a total thickness of all six lens elements along said optical axis, EFL is an effective focal length of the optical imaging lens, and the optical imaging lens satisfies the relationship: ALT/EFL≤7.100.

18. The optical imaging lens of claim 1 , wherein the distance from said object-side surface of said first lens element to said image-side surface of said sixth lens element along said optical axis is TL, AAG is a sum of all five air gaps between each lens elements from said first lens element to said sixth lens element along said optical axis, and the optical imaging lens satisfies the relationship: TL/AAG≤5.500.

19. The optical imaging lens of claim 1 , wherein AAG is a sum of all five air gaps between each lens elements from said first lens element to said sixth lens element along said optical axis, EFL is an effective focal length of the optical imaging lens, and the optical imaging lens satisfies the relationship: AAG/EFL≤3.200.