| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical image capturing lens set that offers light weight, low manufacturing cost, reduced length, high resolution, and high image quality.SOLUTION: An optical image capturing lens includes; a first lens element 10 having positive refractive power, a convex object-side surface 11, and an image-side surface 12 that is convex near a circumferential edge thereof; a second lens element 20 having negative refractive power and an object-side surface 21 that is concave near a circumferential edge thereof; a third lens element 30 having positive refractive power, an object-side surface 31 that is concave near an optical axis, and an image-side surface 32 that is convex near the optical axis; and a fourth lens element 40 having an object-side surface 41 that is convex near the optical axis and an image-side surface 42 that is concave near the optical axis and convex near a circumferential edge thereof. The optical image capturing lens set satisfies: 0.5≤G/G≤3.0, where Grepresents a length of an air gap between the first and second lens elements and Grepresents a length of an air gap between the second and third lens elements. |
