Patent ID: 11073678

Abstract:
The present disclosure discloses an optical imaging system, the optical imaging system including sequentially, along an optical axis from an object side to an image side, a first lens, a second lens, a third lens and a fourth lens. The first lens has a positive refractive power or a negative refractive power, an object-side surface of the first lens is a concave surface, and an image-side surface of the first lens is a convex surface; both the second lens and the third lens have positive refractive powers; and the fourth lens has a positive refractive power or a negative refractive power, wherein an abbe number V1 of the first lens and an abbe number V4 of the fourth lens satisfy: |V1−V4|≤30; and the abbe number V1 of the first lens and an abbe number V2 of the second lens satisfy: 20≤|V1−V2|≤50.