TY - JOUR AU - Monzón Serrano, Juan José AU - Montesinos Amilibia, José María AU - Sánchez Soto, Luis Lorenzo PY - 2020 DO - 10.1364/JOSAA.378661 SN - 0030-3941 UR - https://hdl.handle.net/20.500.14352/6123 T2 - Journal of the Optical Society of America AB - We revisit the basic aspects of first-order optical systems from a geometrical viewpoint. In the paraxial regime, there is a wide family of beams for which the action of these systems can be represented as a Möbius transformation. We examine this... LA - eng M2 - 225 PB - The Optical Society of America KW - Geometric optics KW - Ligth beams KW - Light fields KW - Optocal systems KW - Paraxial wave KW - Coherence TI - Non-Euclidean symmetries of first-order optical systems TY - journal article VL - 37 ER -