Implementation of a Large-Area Diffractive Lens Using Multiple Sub-Aperture Diffractive Lenses and Computational Reconstruction

Direct imaging systems that create an image of object directly on the sensor in a single step are prone to many constraints, as perfect is required be recorded within this step. In designing high resolution direct with diffractive lens, outermost zone width either reaches lithography limit or diffraction itself, imposing challenges fabrication. However, if mode switched indirect one consisting multiple steps complete imaging, then different possibilities open. One such method widely used Golay configuration telescopes. study, Golay-like has been adapted realize large-area lens three sub-aperture lenses. The lenses not collect light and focus them point system, but independently points area. This approach Large-Area Diffractive Integrated Sub-Apertures (LADISA) relaxes fabrication constraints allows elements have larger smaller sub-apertures were manufactured using photolithography. fabricated element was implemented non-linear reconstruction Lucy–Richardson–Rosen algorithm synthesized spread functions. computational optical experiments revealed improved resolutions compared previous studies.