A special micro-optics label system is introduced. A large aperture and long focal length lens structure, which is used as the system receiving terminal, is demonstrated to be able to improve the imaging performance significantly by theoretical analysis. A six-reflection fold annular aperture ultra-thin lens with large aperture and long focal length is designed with the aid of optical engineering software Zemax. The front surface is a plane mirror and the rear surface consists of four concentric annular aspheric reflectors. The outer diameter of the lens is 28 mm, the effective focal length is 38 mm, and the thickness of the lens is 5 mm. With the clear aperture consistency of a four-reflection fold annular aperture lens, the structure of the equipment is improved to increase the number of reflections, effectively reduce the thickness of the lens, and enlarge the focal length of lens. In this work, an optimized design and analysis to the micro-optics label system are reported. It is based on the annular aperture ultra-thin lens as receiving terminal. And the comparison of simulation imaging is given. The results show that using six-reflection fold annular aperture lens as receiving terminal can increase the receiving distance and reduce the distortion of simulated images. Finally, a received image with non-uniform brightness is effectively corrected by using homomorphic filtering method.