Wide-Angle Lens

A wide-angle lens, from an object side to an image side along an optical axis, the wide-angle lens comprising:

• a first lens with negative refractive power;
• a second lens with negative refractive power;
• a third lens with negative refractive power;
• a fourth lens with refractive power;
• a fifth lens with refractive power;
• a sixth lens with refractive power;
• a seventh lens with refractive power;
• an eighth lens being a biconvex lens with positive refractive power;
• and
• the ninth lens being a biconvex lens with positive refractive power,
• wherein the first lens, the second lens and the third lens satisfy the following conditions:
• −26<f1/f<f2/f<f3/f<−3, and
• −1.64<f123/f<−1.6
• wherein f1 is an effective focal length of the first lens, f2 is an effective focal length of the second lens, f3 is an effective focal length of the third lens, f is an effective focal length of the wide-angle lens, and f123 is an effective focal length of a combination of the first lens, the second lens and the third lens.