Patent ID: 11092783

Abstract:
The present disclosure discloses an optical imaging system, which includes, sequentially along an optical axis from an object side to an image side, a first lens to a seventh lens. The first lens has a negative refractive power, and a concave image-side surface; the fourth lens has a positive refractive power; the fifth lens has a positive or negative refractive power, and a concave image-side surface; the seventh lens has a positive or negative refractive power, an aspheric image-side surface and at least one inflection point; the second lens, each of the third lens and the sixth lens has a positive or negative refractive power. An effective radius DT11 of the object-side surface of the first lens and half of a diagonal length ImgH of an effective pixel area of an electronic photosensitive element of the optical imaging system satisfy: 0.5<DT11/ImgH<1.