The multiplier lens DT-Z5X product has independent intellectual property rights, high performance large aperture, suitable for night vision products of optical image magnification lens. This double lens adopts high-tech multilayer composite ion coating technology and high-tech optical system design simulation technology to develop optical products successfully. It has the characteristics of good imaging quality, super luminous flux, high wind and high magnification, small size and light weight. It is especially suitable for optical magnification conversion of low-light night vision products.