Wide-angle lens assembly

A wide-angle lens assembly comprising:

• a first lens which is a meniscus lens with negative refractive power;
• a second lens which is with positive refractive power and comprises a convex surface facing an object side;
• a third lens which is with positive refractive power and comprises a convex surface facing an image side;
• a fourth lens which is with positive refractive power and comprises a convex surface facing the object side;
• and
• a fifth lens which is with negative refractive power and comprises a concave surface facing the object side and a convex surface facing the image side;
• wherein the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are arranged in order from the object side to the image side along an optical axis;
• wherein the wide-angle lens assembly satisfies:
• AAG/TTL≥0.55,
• Vd4−Vd3≥20,
• 1.2≤|f1/f|≤1.6,
• wherein AAG is a total air interval from the first lens to an image plane along the optical axis, TTL is an interval from an object side surface of the first lens to the image plane along the optical axis, Vd3 is an Abbe number of the third lens, Vd4 is an Abbe number of the fourth lens, f1 is an effective focal length of the first lens, and f is an effective focal length of the wide-angle lens assembly.

A wide-angle lens assembly comprising:

• a first lens which is a meniscus lens with negative refractive power;
• a second lens which is with positive refractive power and comprises a convex surface facing an object side;
• a third lens which is with positive refractive power and comprises a convex surface facing an image side;
• a fourth lens which is with positive refractive power and comprises a convex surface facing the object side;
• and
• a fifth lens which is with negative refractive power and comprises a concave surface facing the object side and a convex surface facing the image side;
• wherein the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are arranged in order from the object side to the image side along an optical axis;
• wherein the wide-angle lens assembly satisfies:
• Nd3−Nd4≥0.23,
• 0.9≤f2/f3≤1.3,
• 1.2≤|f1/f|≤1.6,
• wherein Nd3 is an index of refraction of the third lens, Nd4 is an index of refraction of the fourth lens, f is an effective focal length of the wide-angle lens assembly, f1 is an effective focal length of the first lens, f2 is an effective focal length of the second lens, and f3 is an effective focal length of the third lens.