Experimental studies of the transmission of light through low-coverage regular or random arrays of silica micropillars supported by a glass substrate

Turbil, Colette; Yoo, Thomas Sang Hyuk; Simonsen, Ingve; Teisseire, Jérémie; Gozhyk, Iryna; García-Caurel, Enric

doi:10.1364/ao.58.009267

Cited by 5 publications

(5 citation statements)

References 23 publications

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“…At Saint-Gobain, BTDF was measured with an OMS4 goniospectrophotometer commercialised by OPTIS. The OMS4 setup and its usage for BTDF measurements is described in [18]. For this work, a broadband source (Xe-lamp) filtered at 635 nm was used for sample illumination.…”

Section: Description Of Measurement Instrumentsmentioning

confidence: 99%

Survey of bidirectional transmittance distribution function measurement facilities by multilateral scale comparisons

Fu,

Ferrero,

Quast

et al. 2024

Metrologia

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In recent years, a growing demand for the capability of performing accurate measurements of the bidirectional transmittance distribution function (BTDF) has been observed in industry, research and development, and aerospace applications. However, there exists no calibration and measurement capabilities (CMC)-entry for BTDF in the database of the Bureau International des Poids et Mesures (BIPM) and to date no BTDF comparison has been conducted between different national metrology institutes (NMIs) or designated institutes (DIs). As a first step to a possible future key comparison and to test the existing capabilities of determining this measurand, two interlaboratory comparisons were performed. In comparison one, five samples of three different types of optical transmissive diffusers were measured by five NMIs and one DI. By specific sample choice, the focus for this study lay more on orientation-dependent scatter properties. In comparison two, where one NMI, one DI, one university, and three industrial partners investigated their measurement capabilities, the dependence on the orientation was not assessed, but two additional samples of the same material and different thickness were measured. Results of the two comparisons are presented, giving a good overview of existing experimental solutions, and showing specific sample-related problems to be solved for improved future BTDF measurements.

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Section: Description Of Measurement Instrumentsmentioning

confidence: 99%

Survey of bidirectional transmittance distribution function measurement facilities by multilateral scale comparisons

Fu,

Ferrero,

Quast

et al. 2024

Metrologia

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“…Angle-resolved measurements of optical intensity in far field were made with OMS4 goniospectrophotometer commercialized by OPTIS, schematically shown in figure 6(a) and described in details elsewhere [21]. Due to the sample opacity, only angle-resolved optical intensity scattered in reflection was measured.…”

Section: Measurement Setupmentioning

confidence: 99%

Impact of light polarization on angle-resolved light scattering from gloss scale

et al. 2023

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The gloss scale is a set of coated paper samples with diﬀerent surface roughness allowing for appearance variation from high gloss to mat. Nowadays, the gloss scale is widely used as a reference on visual appearance of glossy and mat surfaces. This work provides for angle resolved analysis of light scattering from gloss scales as well as the analysis of the surface topography parameters relevant for the analysis of light-scattering experiments: RMS-roughness σ, auto-correlation function and power spectrum density, correlation length `c and surface slopes. The angle–resolved measurements of light scattered in reﬂection within the half–space are performed at 4 angles of incidence, while measurements within the incidence plane are made at 17 angles of incidence and under non–polarized, s– and p–polarized illumination. The polarization of incident light has a signiﬁcant impact on both the specular and the diﬀused components of scattered light. Brewster scattering angle is especially well observed for black mat surfaces. Qualitative and quantitative analysis of measured scattered light is made with Rayleigh-Rice and Kirchhoﬀ models applied to statistically representative analysis of surface topography.

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“…Today an untrained eye can seldom recognize the virtual reality image. Yet, existing rendering tools should still be developed further in order to account for light polarization [19] and diffraction-related effects [20,21] that are observed in real life.…”

Section: Introductionmentioning

confidence: 99%

Statistically representative estimators of multi-scale surface topography: example of aluminum blasted rough samples

Turbil

Cabrero

Simonsen

et al. 2023

Surf. Topogr.: Metrol. Prop.

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The topography of a rough surface determines many of its physical properties, for instance, tribology, optical properties etc. Nowadays, a deep understanding of such physical phenomena requires the knowledge of the topography at appropriate length scales. Apart from performing multi-scale measurements of the surface topography, it also requires the use of proper statistical estimators for the analysis of such topography maps. Moreover, when dealing with light scattering in the visible spectral range, the scale at which the estimators of local topography properties are defined is extremely important. Here we present a multi-scale and statistical study of the surface topography of blasted aluminum samples which all have rather different visual appearance. Various statistical estimators of surface topography are examined, including estimators related to the height distribution, the lateral correlation and local topology. The combination of these various estimators unveils a scale separation between a micro-scale roughness inherited from the initial cold-rolled aluminum surface and a large scale roughness fully controlled by the blasting process. A special emphasis is given to the crucial importance of length scales in the estimation of local slopes. The present analysis establishes a quantitative link between the statistical properties of the surface topography and the blasting process used to fabricate the samples.

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Experimental studies of the transmission of light through low-coverage regular or random arrays of silica micropillars supported by a glass substrate

Cited by 5 publications

References 23 publications

Survey of bidirectional transmittance distribution function measurement facilities by multilateral scale comparisons

Survey of bidirectional transmittance distribution function measurement facilities by multilateral scale comparisons

Impact of light polarization on angle-resolved light scattering from gloss scale

Statistically representative estimators of multi-scale surface topography: example of aluminum blasted rough samples

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