Open AccessTHE FREQUENCY RESPONSE FUNCTION IN A COHERENT OPTICAL SYSTEM AND ITS FREQUENCY SELECTION CHARACTERISTICS IN TRANSMITTING OPTICAL INFORMATION
Author(s) -
Tan Wei-Han
Publication year - 1960
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.16.316
Subject(s) - function (biology) , optics , line (geometry) , refractive index , frequency response , physics , computer science , mathematics , geometry , electrical engineering , evolutionary biology , biology , engineering
This paper gives an expression of the optical frequency response function suitable for both the incoherent and the coherent optical system. Its physical aspect reveals that the frequency response function plays the role of an information selector.The Becke phenomenon for detesting small refractive index difference between object and its surrounding medium by observing the apparent movement of the diffractional border line (Becke line) on defocusing the optical system has been explained.