A short-range optical amplification module, comprising, sequentially from the image side to the object side: a reflective polarizing plate , a first phase delay plate, a third lens and a second phase delay plate; wherein, the short-range optical amplification module further comprises a first lens that is located on either side of any one of the reflective polarizing plate, the first phase delay plate, the third lens and the second phase delay plate and a second lens that is located on either of any one of the reflective polarizing plate, the first phase delay plate, the third lens and the second phase delay plate; wherein: in the third lens , the optical surface adjacent to the second phase delay plate is a transflective optical surface; after passing through the second phase delay plate, the third lens , the second lens , the first lens and the first phase delay plate, a light of a first polarization direction arrives at the reflective polarizing plate , where it is reflected for the first time, then after passing through the first phase delay plate, the first lens , the second lens and an optical surface of the third lens that is adjacent to the second lens , it arrives at the transflective optical surface of the third lens , where it is reflected for the second time, and then passes through the optical surface of the third lens that is adjacent to the second lens , the second lens , the first lens , the first phase delay plate and the reflective polarizing plate ; characterized in that the first focal length f 3 of the third lens meets the following condition: 1F≤f 3 ≤2F, wherein the first focal length f 3 of the third lens is the focal length measured after an incident light transmits through the optical surface of the third lens that is adjacent to the second lens , then is reflected by the transflective optical surface, and F is the focal length of the optical system consisting of the first lens, the second negative lens and the third lens. after passing through the second phase delay plate, the third lens , the second lens , the first lens and the first phase delay plate, a light of a first polarization direction arrives at the reflective polarizing plate , where it is reflected for the first time, then after passing through the first phase delay plate, the first lens , the second lens and an optical surface of the third lens that is adjacent to the second lens , it arrives at the transflective optical surface of the third lens , where it is reflected for the second time, and then passes through the optical surface of the third lens that is adjacent to the second lens , the second lens , the first lens , the first phase delay plate and the reflective polarizing plate ; characterized in that the first focal length f 3 of the third lens meets the following condition: 1F≤f 3 ≤2F, wherein the first focal length f 3 of the third lens is the focal length measured after an incident light transmits through the optical surface of the third lens that is adjacent to the second lens , then is reflected by the transflective optical surface, and F is the focal length of the optical system consisting of the first lens, the second negative lens and the third lens. <EOS>