Imaging lens having five lens elements, and electronic apparatus having the same

An imaging lens comprising first, second, third, fourth, and fifth lens elements arranged from an object side to an image side in the given order, each of said first, second, third, fourth, and fifth lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side, wherein:

• said first lens element has a positive refracting power, and said object-side surface thereof is a convex surface;
• said second lens element has a negative refracting power, and said image-side surface thereof is a concave surface;
• said third lens element has a negative refracting power;
• said image-side surface of said fourth lens element is a convex surface;
• said image-side surface of said fifth lens element has a concave portion in a vicinity of an optical axis of said imaging lens and a convex portion in a vicinity of a periphery of said fifth lens element;
• said imaging lens does not include any lens element with refracting power other than said first, second, third, fourth, and fifth lens elements;
• and
• said imaging lens satisfies |ν2−ν3|<10 and 0.5<T4/GAA<1.0, where
• “ν2” represents an Abbe number of said second lens element,
• “ν3” represents an Abbe number of said third lens element,
• “T4” represents a distance between said object-side surface and said image-side surface of said fourth lens element at the optical axis, and
• “GAA” represents a sum of a distance between said image-side surface of said first lens element and said object-side surface of said second lens element at the optical axis, a distance between said image-side surface of said second lens element and said object-side surface of said third lens element at the optical axis, a distance between said image-side surface of said third lens element and said object-side surface of said fourth lens element at the optical axis, and a distance between said image-side surface of said fourth lens element and said object-side surface of said fifth lens element at the optical axis.