Search results for "Focal switch"

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Focal switch: a new effect in low-Fresnel-number systems

2010

It is shown for the first time we believe, that when a spherical wave illuminates a certain type of diffracting screen, in addition to the expected focal-shift effect, depending on the value of the Fresnel number of the focusing system, a focal switch effect can appear, i.e., an increase in the height of the lateral lobe of the axial-intensity distribution over that of the central lobe.

PhysicsFresnel zonebusiness.industryMaterials Science (miscellaneous)Industrial and Manufacturing EngineeringLobeHuygens–Fresnel principlesymbols.namesakeOpticsmedicine.anatomical_structureInterference (communication)Spherical wavesymbolsCentral lobemedicineFresnel numberBusiness and International ManagementFocal switchbusinessApplied Optics

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