The Simulation of Wavefront Coding Imaging Systems

In the domain of reconnaissance, remote sensing, etc., people want to get high resolution images. There is a conflict between the resolution and the optical system defocus. In order to acquire high resolution images, some methods are taken to minish the defocus, but these ways affect the cost and weight of the system. In this paper, a novel technology was described for extending the depth of focus of the incoherent optical system; meanwhile this technology does not decrease the resolution of the images. In this technology, the aspheric optical element is used to encode the images as well as the digital signal processing is used to decode the images. It is significant for optical remote sensors to acquire high resolution images under complicated space environment.