OPTICAL IMAGE CAPTURING SYSTEM

The utility model discloses an optical imaging system, and the system comprises an imaging lens group which comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object side to the image side along an optical axis, and the object side surface and the image side surface of the fifth lens are provided with inflection points; a plurality of separators, comprising a first separator arranged on the image side of the first lens and at least partially contacted with the first lens, and a second separator arranged on the image side of the second lens and at least partially contacted with the second lens, a third spacer disposed on an image side of the third lens and at least partially contacting the third lens, and a fourth spacer disposed on an image side of the fourth lens and at least partially contacting the fourth lens; and a lens barrel for accommodating the imaging lens group and the plurality of spacers, the effective focal length f5 of th