15 May 2000 Analytical model of autofocus systems with CCD camera
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In the following, an analytical model for the optical imaging will be presented that completely describes the optical transfer pathway from the original object to the in- focus as well as to the out-of-focus projection. According to this, both the diffraction theory and the Gaussian beam theory (geometrical optics) will be taken into account. The results show that noticeable differences between these theories are found near the focal plane only. The model is generally applicable and therefore valid for projection type displays and acquisition devices (cameras).
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Wolfgang Kesseler, Wolfgang Kesseler, Jan Fischer, Jan Fischer, } "Analytical model of autofocus systems with CCD camera", Proc. SPIE 3965, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications, (15 May 2000); doi: 10.1117/12.385454; https://doi.org/10.1117/12.385454


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