scholarly journals A CALCULATION METHOD OF THE OPTICAL PROPERTIES FOR VENETIAN BLINDS

2007 ◽  
Vol 72 (617) ◽  
pp. 1-8 ◽  
Author(s):  
Taito KINOSHITA ◽  
Hiroshi AKASAKA ◽  
Hideyo NIMIYA
Keyword(s):  
Optical Properties ◽  
Calculation Method ◽  
Venetian Blinds

Numerical and experimental study of the optical properties of venetian blinds

2012 ◽  
Vol 36 (1) ◽  
pp. 7-34 ◽  
Author(s):  
M. Glória Gomes ◽  
A. Moret Rodrigues ◽  
J. Alexandre Bogas
Keyword(s):  
Experimental Study ◽  
Optical Properties ◽  
Venetian Blinds

scholarly journals Electronic structure and optical properties of CsI under high pressure: a first-principles study

RSC Advances ◽  
2017 ◽  
Vol 7 (83) ◽  
pp. 52449-52455 ◽  
Author(s):  
Qiang Zhao ◽  
Zheng Zhang ◽  
Xiaoping Ouyang
Keyword(s):  
Density Functional Theory ◽  
High Pressure ◽  
Optical Properties ◽  
Electronic Structure ◽  
First Principles ◽  
Calculation Method ◽  
Density Functional ◽  
First Principles Calculation ◽  
Functional Theory ◽  
First Principles Study

We investigated the effects of high pressure on the electronic structure and optical properties of a CsI crystal through a first-principles calculation method based on density functional theory.

A Simplified Method for Calculating the Effective Solar Optical Properties of a Venetian Blind Layer for Building Energy Simulation

2009 ◽  
Vol 131 (2) ◽  
Author(s):  
N. A. Kotey ◽  
M. R. Collins ◽  
J. L. Wright ◽  
T. Jiang
Keyword(s):  
Optical Properties ◽  
System Analysis ◽  
Building Energy ◽  
Energy Simulation ◽  
Building Energy Simulation ◽  
Angle Of Incidence ◽  
Beam Radiation ◽  
Venetian Blinds ◽  
Simplified Method ◽  
Venetian Blind

The use of venetian blinds to control solar gain through windows is common in both residential and commercial buildings, and their potential for reduction in peak cooling load and energy consumption is recognized to be large. As such, there is a strong need for models that allow a venetian blind to be included in glazing system analysis. A simplified method of calculating the “effective” solar optical properties of a venetian blind is presented. The solar optical properties of the entire blind are determined based on slat geometry and the optical properties of the slat material, and on the direction and nature (beam or diffuse) of incident radiation. The slat material optical properties are assumed to be independent of the angle of incidence, and are assumed to transmit and reflect beam radiation diffusely. As a first approximation, the slats are assumed to be flat with negligible thickness. A correction is then developed and applied that accounts for the curvature of the slat. The results of the flat and curved slat models are compared with experimental data for commercially available venetian blinds. Both models demonstrate excellent agreement with experiments, except when the profile and slat angles are aligned. In that case, the flat slat model predicts blind transmissions that are too large. The models developed in this study provide useful input to multilayer glazing/shading models used for rating or for building energy simulation.

A synergistic combination of local tight binding theory and second harmonic generation elucidating surface properties of ZnO nanoparticles

2017 ◽  
Vol 19 (44) ◽  
pp. 29991-29997 ◽  
Author(s):  
C. B. Nelson ◽  
T. Zubkov ◽  
J. D. Adair ◽  
M. Subir
Keyword(s):  
Optical Properties ◽  
Second Harmonic Generation ◽  
Surface Properties ◽  
Harmonic Generation ◽  
Zno Nanoparticles ◽  
Calculation Method ◽  
Second Harmonic ◽  
Tight Binding ◽  
Second Order ◽  
Binding Theory

A combined SHG and tight-binding calculation method reveals surface second-order optical properties of ZnO nanoparticles.

scholarly journals A CALCULATION METHOD OF THE OPTICAL PROPERTIES FOR GLAZING WITH VENETIAN BLIND

2009 ◽  
Vol 74 (639) ◽  
pp. 569-577
Author(s):  
Taito KINOSHITA ◽  
Hiroshi AKASAKA ◽  
Hideyo NIMIYA
Keyword(s):  
Optical Properties ◽  
Calculation Method ◽  
Venetian Blind

Design of objective lens for 200-kV high-resolution electron microscopes

1983 ◽  
Vol 41 ◽  
pp. 314-315
Author(s):  
K. Tsuno ◽  
T. Honda ◽  
Y. Harada ◽  
M. Naruse
Keyword(s):  
Optical Properties ◽  
Computer Technology ◽  
Axial Magnetic Field ◽  
Chromatic Aberration ◽  
Objective Lens ◽  
Resolution Electron ◽  
Correction Of Astigmatism ◽  
Three Stages ◽  
Electron Microscopes ◽  
Stage 1

Developement of computer technology provides much improvements on electron microscopy, such as simulation of images, reconstruction of images and automatic controll of microscopes (auto-focussing and auto-correction of astigmatism) and design of electron microscope lenses by using a finite element method (FEM). In this investigation, procedures for simulating the optical properties of objective lenses of HREM and the characteristics of the new lens for HREM at 200 kV are described.The process for designing the objective lens is divided into three stages. Stage 1 is the process for estimating the optical properties of the lens. Firstly, calculation by FEM is made for simulating the axial magnetic field distributions Bzc of the lens. Secondly, electron ray trajectory is numerically calculated by using Bzc. And lastly, using Bzc and ray trajectory, spherical and chromatic aberration coefficients Cs and Cc are numerically calculated. Above calculations are repeated by changing the shape of lens until! to find an optimum aberration coefficients.

Optical Properties of HVEM Accelerators

1975 ◽  
Vol 33 ◽  
pp. 180-181
Author(s):  
A. Strojnik ◽  
J.W. Scholl ◽  
V. Bevc
Keyword(s):  
Optical Properties ◽  
Electron Accelerator ◽  
Systematic Investigation ◽  
Electron Source ◽  
High Brightness ◽  
The Past ◽  
Wide Range ◽  
Optical Behavior

The electron accelerator, as inserted between the electron source (injector) and the imaging column of the HVEM, is usually a strong lens and should be optimized in order to ensure high brightness over a wide range of accelerating voltages and illuminating conditions. This is especially true in the case of the STEM where the brightness directly determines the highest resolution attainable. In the past, the optical behavior of accelerators was usually determined for a particular configuration. During the development of the accelerator for the Arizona 1 MEV STEM, systematic investigation was made of the major optical properties for a variety of electrode configurations, number of stages N, accelerating voltages, 1 and 10 MEV, and a range of injection voltages ϕ0 = 1, 3, 10, 30, 100, 300 kV).

Differential polarization imaging of sickled cells

1988 ◽  
Vol 46 ◽  
pp. 62-63
Author(s):  
Marcos F. Maestre
Keyword(s):  
Optical Properties ◽  
Theoretical Approach ◽  
Polarized Light ◽  
Polarization Microscopy ◽  
Spectroscopic Techniques ◽  
Polarization Imaging ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Microscopic Scale ◽  
Chiral Structures

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.

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