| 摘要 |
A six-piece wide-angle lens module includes, from an object side to an image side, a first lens group, an aperture and a second lens group. The first lens group consists of a negative first lens, a negative second lens and a positive third lens, each lens having an object side surface facing the object side and an image side surface facing the image side, the first lens is a meniscus lens having a convex object side surface, the second lens has a concave image side surface, the third lens has a convex object side surface. The second lens group consists of a positive fourth lens, a negative fifth lens and a positive sixth lens, the fourth lens is a biconvex lens, the fifth lens has a concave image side surface, the sixth lens has a convex object side surface, the second lens group has a positive focal length. |
| 主权项 |
1. A six-piece wide-angle lens module, comprising, in a sequence from an object side to an image side,
a first lens group, substantially consisting of a first lens having a negative refractive power, a second lens having a negative refractive power and a third lens having a positive refractive power, each lens having an object side surface facing the object side and an image side surface facing the image side, the first lens being a meniscus lens having a convex object side surface, the second lens having a concave image side surface, the third lens having a convex object side surface; an aperture; and a second lens group, substantially consisting of a fourth lens having a positive refractive power, a fifth lens having a negative refractive power, and a sixth lens having a positive refractive power, each lens having an object side surface facing the object side and an image side surface facing the image side, the fourth lens being a biconvex lens, the fifth lens having a concave image side surface, the sixth lens having a convex object side surface, and the second lens group having a positive focal length; wherein the six-piece wide-angle lens module satisfies the following relationship:0.65≤fffr≤8.81; wherein ff is a focal length of the first lens group, and fr is a focal length of the second lens group. |
