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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.00 seconds. 
Theoretical description of imaging by a digital holographic microscope
 Slabá, Michala ; Komrska, Jiří (referee) ; Chmelík, Radim (advisor)
The diploma thesis deals with theory of imaging in a transmitted-light digital holographic microscope using partially coherent illumination. The influence of spatial and temporal coherence state on optical sectioning property is solved. The coherent transfer function is calculated. From this function imaging characteristics for a two-dimensional scattering object are derived depending on its defocus. Two different designs of microscopes developed in the Laboratory of optical microscopy in IPE FME BUT are considered.
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Numerical refocusing in a digital holographic microscope with a partially coherent illumination
 Slabá, Michala ; Komrska, Jiří (referee) ; Chmelík, Radim (advisor)
The bachelor thesis deals with issue of numerical refocusing in a holographic microscope with partially space coherent light. The numerical refocusing is a computation of the complex amplitude of an image wave in planes differing from the image plane. The calculation of the region where the numerical refocusing is usable is based on application of Rayleigh-Sommerfeld diffraction integral and the Fresnel approximation of a spherical wave. The description of coherence state and propagation of partially coherent light follows from statistical methods in optical coherence theory. In this thesis the thickness of field is calculated where the numerical refocusing is usable. The thickness depends on microscope parameters - the size of the light source and parameters of lenses in microscope. The result is applied to the microscope in the laboratory IPE FME BUT.
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