Optical imaging lens

An optical imaging lens, from an object side to an imaging plane along an optical axis, sequentially comprising:

• a first lens having a negative focal power, an object side surface of the first lens being convex, and an image side surface of the first lens being concave;
• a second lens having a positive focal power, an image side surface of the second lens being convex;
• a stop;
• a third lens having a positive focal power, an object side surface and an image side surface of the third lens both being convex;
• a fourth lens having a positive focal power, an object side surface and an image side surface of the fourth lens both being convex;
• and
• a fifth lens having a negative focal power, an object side surface of the fifth lens being concave and an image side surface of the fifth lens being convex, and the fourth lens and the fifth lens being combined to form a cemented lens,
• wherein the optical imaging lens satisfies a conditional expression below:
• 0.35
• mm
• -
• 1
• <
• D
• ⁢
• 1
• ⁢
• (
• IH
• ×
• f
• )
• <
• 0.5
• mm
• -
• 1
• ;
• where D1 represents a maximum effective half diameter of the first lens, IH represents an image height corresponding to a half field of view of the optical imaging lens, and f represents a focal length of the optical imaging lens.