Search results for "Power matrix"

showing 2 items of 2 documents

Lateral magnification matrix from the dioptric power matrix formalism in the paraxial case.

2012

Background Previous studies have highlighted that power matrices fully characterize the concept of dioptric power of any astigmatic surface. Thus, the basic equations in physiological optics can be generalized using the matrix formalism of the dioptric power. Among others, lateral magnification has also been interpreted as a matrix but mainly concerning magnification modification induced by spectacle correction of refractive error. Purpose To provide a fresh look into a novel paraxial formulation for the assessment of the lateral magnification using power matrices and in presence of astigmatism for thin and thick imaging systems in general. Methods Linear optics provides the frame to genera…

Optics and Photonicsbusiness.industrymedia_common.quotation_subjectParaxial approximationPhysics::OpticsMagnificationAstigmatismAsymmetrySensory SystemsOphthalmologyMatrix (mathematics)Formalism (philosophy of mathematics)OpticsThin lensHumansbusinessRefractive indexPower matrixOptometrymedia_commonMathematicsLensesOphthalmicphysiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)
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Efficiency of Wave Energy Converters off the Sicilian Channel

2019

This paper presents a preliminary analysis on efficiency of wave energy converters off the Sicilian Channel (Italy) carried out using the SNL-SWAN spectral model (”Sandia National Laboratories – Simulating WAves Nearshore”). This open source numerical code makes possible to calculate the power extracted from wave energy converter (WEC) devices, arranged in arrays. The WEC arrays were located parallel to the coastline, near the 20 m bathymetric isoline. Three devices were tested: Pelamis, Wave Dragon and Oyster 2; one of the input data of the numerical model is the WEC power matrix, expressed as a function of the wave height and period. This matrix was determined experimentally by the protot…

Settore ICAR/02 - Costruzioni Idrauliche E Marittime E Idrologiawave energy power matrix WEC devices coastal defence Sicilian Channel
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