Abstract: A compact optical imaging device with three individual lenses, able to capture clear images of both near and distant objects with a balance between imaging quality and sensitivity, and used in an imaging module and an electronic device, satisfies the formula 0 mm<R11<1 mm, ?5%<DIS<5%, V1?V2, V3?V2, where R11 is a radius of curvature of an object-side surface of the first lens, DIS is optical distortion of the optical imaging device, V1 is a dispersion coefficient of the first lens, V2 is a dispersion coefficient of the second lens, and V3 is a dispersion coefficient of the third lens.

Abstract: A compact multi-lens optical imaging device having high resolution in both near-sight and far-sight, for use in an electronic device, is composed of first to fourth lenses having positive and negative refractive powers and a filter. The optical imaging module satisfies formula 0.4<Imgh/f<1.4, 0.7<TL/f<2, Imgh being a half of an image height corresponding to a maximum field of view of the optical imaging device, f being an effective focal length of the optical imaging device, and TL being a distance from an object-side surface of the first lens to an image plane of the optical imaging device along the optical axis.