The Luneburg-Lissajous lens

We design a new absolute optical instrument by composing Luneburg lens and Lissajous lens, and analyze its imaging mechanism from the perspective of simple harmonic oscillations. The imaging positions are determined by the periods of motions in the x and y directions. Besides, instruments composed with multiparts are also devised, which can form imaging or self-imaging as long as the motion periods of the x and y directions are satisfied to similar conditions. We further investigate the imaging performance of such Luneburg-Lissajous lens in wave optics. Our work provides a new way to analyze the imaging of different lens by simply dissociating the equations of motions, and reveal the internal mechanism of some absolute optical instruments.