Eyepiece

The eyepiece comprises a diaphragm, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged at intervals in the direction from the image space to the object space. Wherein the first lens and the second lens form a doublet lens, the fifth lens and the sixth lens form a doublet lens, the seventh lens and the eighth lens form a doublet lens, and the other lenses are all single lenses. The defects that an existing eyepiece is limited by the exit pupil distance and the exit pupil diameter of the eyepiece, so that the exit pupil distance is small, the exit pupil diameter is small, and distortion is high are overcome, the eight lenses with specially designed materials, shapes, focal power and air gaps are matched with the diaphragm, and the eyepiece has the advantages of being large in exit pupil diameter, large in exit pupil distance and low in distortion. 本发明涉及一种目镜，包括由像方至物方方向依次间隔设置的光阑、第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜、第七透镜以