methods , systems , computer - readable media , and apparatuses for reconstructing a three - dimensional image are presented . in some implementations , the method collects rays emanating from a source or object and focuses the rays emanating from the source or object towards a first reflecting element . the method then focuses the rays emanating from the source or object towards a second reflecting element . the method then redirects the focused rays from the first lensing element toward a second reflecting element . the method then redirects the focused rays from the second lensing element toward a fourth reflecting element . the method then reconstructs a 3d image representing the source or object based at least in part on rays impinged upon the image sensor of the imaging device .