Optical imaging lens

An optical imaging lens, from an object side to 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, the first lens element to the sixth lens element each having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through;
• the first lens element has negative refracting power;
• the second lens element has negative refracting power and a periphery region of the object-side surface of the second lens element is convex;
• an optical axis region of the image-side surface of the fifth lens element is concave;
• and
• an optical axis region of the image-side surface of the sixth lens element is concave;
• wherein lens elements included by the optical imaging lens are only the six lens elements described above, υ1 is an Abbe number of the first lens element, υ3 is an Abbe number of the third lens element, EFL is an effective focal length of the optical imaging lens, ImgH is an image height of the optical imaging lens, Fno is the f-number of the optical imaging lens to satisfy the relationship:
• EFL*Fno/ImgH≤3.200 and υ1+υ3≤90.000.

An optical imaging lens, from an object side to 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, the first lens element to the sixth lens element each having an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through;
• the first lens element has negative refracting power and an optical axis of the object-side surface of the first lens element is convex;
• a periphery region of the object-side surface of the second lens element is convex and a periphery region of the image-side surface of the second lens element is concave;
• an optical axis region of the object-side surface of the third lens element is convex;
• an optical axis region of the image-side surface of the fifth lens element is concave;
• and
• an optical axis region of the image-side surface of the sixth lens element is concave;
• wherein lens elements included by the optical imaging lens are only the six lens elements described above, υ1 is an Abbe number of the first lens element, υ3 is an Abbe number of the third lens element, EFL is an effective focal length of the optical imaging lens, BFL is a distance from the image-side surface of the sixth lens element to an image plane along the optical axis, Fno is the f-number of the optical imaging lens to satisfy the relationship:
• EFL*Fno/BFL≤3.500 and υ1+υ3≤90.000.