CAMERA LENS

WIPO Patent Application WO/2019/019625

A1

A camera lens has an effective focal length f and an entrance pupil diameter EPD and comprises, from an object side to an image side along the optical axis, a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4) in sequence. The first lens (L1) may have negative focal power and the image side surface (S2) thereof is a concave surface; the second lens (L2) may have positive focal power or negative focal power; the third lens (L3) may have positive focal power; the fourth lens (L4) may have positive focal power or negative focal power and the image side surface (S8) thereof is a convex surface; and the effective semi-diameter DT11 of the object side surface (S1) of the first lens (L1) and a half ImgH of the diagonal line length of an effective pixel region of an electronic photosensitive element of the camera lens satisfy: 1.2