The imaging properties of the curved superlens

The main function of the curved superlens is to magnify or minify the image of the pattern cut onto the mask in a photolithograph device. It is found theoretically, in this paper, that the magnifying or minifying function deals with two important properties: one is the magnifying (or minifying) effect and the other is the image quality. The magnifying (or minifying) effect of a specific superlens device can be expressed by a linear function and the image quality can be guaranteed by a quadratic function. The ways to obtain the two functions have been demonstrated in this paper.