4K laparoscope objective lens system

The utility model discloses a 4K laparoscope objective lens system which comprises an objective lens used for enlarging a view field and an aperture, the objective lens is provided with a first glued lens group, one side of the first glued lens group is provided with a second glued lens group, the second glued lens group is provided with a field lens, and one side of the field lens is provided with a compensation lens. The first cemented lens group comprises a first lens and a second lens, the first lens is located on one side of the second lens, and a first adhesive is arranged between the first lens and the second lens. According to the utility model, the objective lens, the first glued lens group, the second glued lens group, the field lens and the compensation lens are matched with each other, the objective lens increases the aperture, the entrance pupil diameter and the field angle, and the first glued lens group and the second glued lens group form a double-Gaussian structure which is approximately symm