Zhejiang Sunny Optics Co., Ltd.

Xinghai You

Lin Huang

Kaiyuan Zhang

An optical imaging lens sequentially includes, from an object side to an image side along an optical axis, a first lens (E), a second lens (E), a third lens (E), a fourth lens (E), a fifth lens (E), a sixth lens (E), a seventh lens (E) and an eighth lens (E) with refractive power. An object-side surface (S) of the first lens (E) is a convex surface. The fourth lens (E) has positive refractive power. The seventh lens (E) has negative refractive power, and an object-side surface (S) thereof is a convex surface. There is an air space between any two adjacent lenses in the first lens (E) to the eighth lens (E). An effective focal length f1 of the first lens (E) and an effective focal length f4 of the fourth lens (E) meet 1.7<|f4/f1|<4.

Optical imaging lens

The disclosure discloses an optical imaging system, sequentially includes from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the first lens has a positive refractive power; the second lens has a negative refractive power, an object-side surface thereof is a concave surface, and an image-side surface thereof is a convex surface; the third lens has a refractive power; the fourth lens has a positive refractive power, an object-side surface thereof is a concave surface, and an image-side surface thereof is a convex surface; the seventh lens has a negative refractive power, an object-side surface thereof is a convex surface; and a total effective focal length f of the optical imaging system and an entrance pupil diameter EPD of the optical imaging system satisfy f/EPD≤0.8.

Growing community of inventors

Zhejiang, China

Xinghai You