Optical imaging system

Abstract

An optical imaging system is provided. The optical imaging system includes a first lens group, a reflective member, and a second lens group arranged sequentially along an optical axis, and the first lens group may include one lens, and the second lens group includes two or more lenses, the first lens group may have positive refractive power, and the second lens group may have positive refractive power as a whole, an effective diameter of the lens included in the first lens group may be greater than an effective diameter of the lenses included in the second lens group, and 0<D1/f<0.05 may be satisfied. Here, D1 is a distance on the optical axis between an image-side surface of the lens included in the first lens group and the reflective member, and f is a total focal length of the optical imaging system.

Dependencies are inferred from the claim text.