Synthesis And Application On Textile Of The Shape Memory Polyurethane

Fundus camera is a widely used ophthalmic testing equipment with the characteristics of simple construction, easy to use, and intuitive graphics. The revolution of a conventional fundus camera is affected by the optical structure of the fundus camera, the form of lighting, the method to eliminate stray light and the aberration of human eyes. The traditional fundus camera can not correct the aberrations of human eye, thus resolution is only about 10μm. Applying adaptive optics in fundus cameras to correct the aberration of the human eye can improve the resolution of fundus cameras.Firstly, this paper studied the physical structure and optical properties of human eyes, and established a human eye model include dynamic aberrations. Then this article researched the basic principles of fundus camera, structural characteristics of the illumination light path and the imaging optical path, and designed a traditional fundus camera with Zemax. The fundus camera in this paper using polarized light, circular illumination to eliminate stray light. The fundus camera can imaged human eyes which diopter is between -10D to 10D, the resolution can reach 10μ m. Finally, this paper introduced the basic principles of fundus camera using wave front sensorless adaptive optics, then simulated a fundus imaging system using wave front sensorless adaptive optics with Zeamx and Matlab, After that this paper compared the image quality with and without using adapt optics.