Open AccessDirect determination of f-number by using Ronchi test
Author(s) -
Sukmock Lee
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.005107
Subject(s) - optics , lens (geology) , aperture (computer memory) , value (mathematics) , software , mathematics , physics , computer science , statistics , acoustics , programming language
A method to determine f-number for an imaging system is discussed. This method uses Ronchi test and is different in that the value of f-number of the system can be determined without depending on any particular parameters. Two different sizes of aperture for a common system were investigated and the corresponding f-numbers were compared with those calculated by a lens design software. In addition, the determined f-numbers are proved to be consistent with other values obtained in this study.