Imaging lens with three lens elements, and electronic apparatus having the same

An imaging lens comprising first, second, and third lens elements arranged in order from an object side to an image side, wherein:

• said first lens element has a positive refracting power, and has a convex object-side surface facing toward the object side;
• said second lens element has a concave object-side surface facing toward the object side, and a convex image-side surface facing toward the image side;
• and
• said third lens element has an image-side surface facing toward the image side, having a concave portion in a vicinity of an optical axis of said imaging lens;
• wherein said third lens element is interposed between said second lens element and an image plane;
• wherein said imaging lens satisfies |v1−v2|<5, and |v1−v3|>20, where v1, v2, and v3 respectively represent dispersion coefficients of said first, second, and third lens elements;
• wherein said imaging lens further satisfies LBF<1.072 mm, where LBF represents a shortest distance between a center point of said image-side surface of said third lens element and said image plane, with said center point of said image-side surface of said third lens element coincides with said optical axis of said imaging lens;
• and
• wherein said first lens element further has an image-side surface facing toward the image side;
• and said imaging lens further satisfies 0.30 mm<S12<0.65 mm, where S12 represents a distance between a center point of said image-side surface of said first lens element and a center point of said object-side surface of said second lens element, the center point of said image-side surface of said first lens element and the center paint of said object-side surface of said second lens element coincides with the optical axis of said imaging lens.