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Geometric design of lensless photoconductive contact‐type image sensors
Author(s) -
Capon J.,
Baets J.,
Rycke I.,
Smet H.,
Doutreloigne J.,
Calster A.,
Vanfleteren J.
Publication year - 1993
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1984865
Subject(s) - aliasing , figure of merit , signal (programming language) , image sensor , optics , computer science , type (biology) , noise (video) , image (mathematics) , process (computing) , signal to noise ratio (imaging) , physics , computer vision , filter (signal processing) , ecology , biology , programming language , operating system
— Two figures of merit of the imaging process in a lensless photoconductive contact‐type image sensor are described. One figure is proportional to the signal‐to‐noise ratio and the other figure is a measure of the strength of aliasing effects. A simple analytical model, based on a realistic “one‐strip” geometry, is presented. Using this model, the effects of five geometric parameters on these figures are analyzed. It is shown that in optimizing the geometry, trade‐offs will have to be made between a high signal‐to‐noise ratio and a good suppression of aliasing effects. The model described can be used to carry out first‐order calculations in order to optimize the sensor geometry.