RT Journal Article T1 Line spread function formulation proposed by W. H. Steel: A revision A1 Manzanares Ituarte, Ana A1 Calvo Padilla, María Luisa A1 Chevalier Del Río, Margarita A1 Lakshminarayanan, Vasudevan AB A revised formulation of the image Light distribution of an incoherent line source proposed by Steel [Rev. Opt. 31, 334-340 (1952)] is presented. Analytical and numerical results based on this new representation are given. We explicitly show that a major error in Steel's final expression generates singularities, thereby preventing convenient numerical computation. PB The Optical Society of America SN 0003-6935 YR 1997 FD 1997-07-01 LK https://hdl.handle.net/20.500.14352/59074 UL https://hdl.handle.net/20.500.14352/59074 LA eng NO Manzanares Ituarte, A., Calvo Padilla, M. L., Chevalier Del Río, M. & Lakshminarayanan, V. «Line Spread Function Formulation Proposed by W H Steel: A Revision». Applied Optics, vol. 36, n.o 19, julio de 1997, p. 4362. DOI.org (Crossref), https://doi.org/10.1364/AO.36.004362. NO © Optical Society of America.The financial support of the Spanish Ministry of Health, the Institute of Health “Carlos III”, and the Health Research Foundation under project 95/1518 is acknowledged. Also a grant (A. Manzanares) from the Complutense University (4829) is acknowledged. NO Ministerio de Sanidad (España) NO Instituto de Salud Carlos III NO Health Research Foundation (Canadá) NO Universidad Complutense de Madrid DS Docta Complutense RD 10 abr 2025