Why illumination engineering?

Abstract:The Functional Freeform Fitting (F 4 ) method is utilized to design a freeform optic for oblique illumination of Mark Rothko's Green on Blue (1956). Shown are preliminary results from an iterative freeform design process; from problem definition and specification development to surface fit, ray tracing results, and optimization. This method is applicable to both point and extended sources of various geometries.

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“…Ray tracing of a Lambertian point source and a Lambertian extended (6×6 mm) source are compared. Figure 6 provides the efficiency [27] …”

Section: Fit Comparisonmentioning

confidence: 99%

Designing a Freeform Optic for Oblique Illumination

Ulanch¹,

Williams²,

King³

et al. 2017

Optical Design and Fabrication 2017 (Freeform, IODC, OFT)

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“…In the context of the studied pathology one can talk about genetically determined defect of cyclooxygenase being the key enzyme of the arachidonic acid metabolism. The role of heredity in the formation of aspirin-intolerant PRS has been proven by several studies [7,25]. There was found the reduction in the activity of cyclooxygenase in the stromal tissue of the mucosa and polyps in such patients as well [6,27,28].…”

Section: Problem Statement and Analysis Of The Recent Researchmentioning

confidence: 99%

Epigenetic Regulation of Gene Activity in Epithelial Cells of Nasal Mucous Membrane in Patients with Polypous Rhinosinusitis

Koshel

2017

Arch. clin. med.

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Nowadays, a wide clinico-laboratory polymorphism of "polypous rhinosinusitis" is observed. It suggests the potential role of heredity in the formation of the disease indicating the necessity of studying the role of genetic factor in the formation of various clinico-pathogenic variants of polyposis in detail. The objective of the research was to study the degree of functional abnormalities in the epithelial cell genome of the nasal mucous membrane in patients with polypous rhinosinusitis using the cytogenetic methods. Materials and methods. The article presents the results of cytogenetic study of 70 patients with various types of polypous rhinosinusitis (aspirin-intolerant and allergic). Hereditary predisposition to the disease was determined applying clinical and genealogical analysis. Results. Significant differences in the quantitative characteristics of the functional state of the nasal epithelial cell genome by the criterion of chromatization indices, the nucleolar index, the indices of the heteropyknotic X chromosome and pathologically altered nuclei were found in patients with aspirin-intolerant polypous rhinosinusitis as compared to those with allergic polypous rhinosinusitis as well as the control group.The identified changes serve as a criterion of the reduction in the activity of the transcriptional-translational processes in aspirin-intolerant polypous rhinosinusitis. Conclusions. The studied changes in the parameters of the functional state of the epithelial cell genome in the nasal mucous membrane provided an objective confirmation of hypothesis about epigenetic nature of pathology formation.

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“…Ray tracing of a Lambertian point source and a Lambertian extended (6×6 mm) source are compared. Figure 6 provides the efficiency [27] η = Φ target Φ source (14) of the optic in directing rays to the back wall. Figure 7 shows the uniformity of the illuminance across the painting area, a subset of the painting wall area.…”

Section: Fit Comparisonmentioning

confidence: 99%

Designing a freeform optic for oblique illumination

Uthoff

Ulanch

Williams

et al. 2017

International Optical Design Conference 2017

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The Functional Freeform Fitting (F 4) method is utilized to design a freeform optic for oblique illumination of Mark Rothko's Green on Blue (1956). Shown are preliminary results from an iterative freeform design process; from problem definition and specification development to surface fit, ray tracing results, and optimization. This method is applicable to both point and extended sources of various geometries.

show abstract

Why illumination engineering?

Cited by 11 publications

References 3 publications

Designing a Freeform Optic for Oblique Illumination

Designing a Freeform Optic for Oblique Illumination

Epigenetic Regulation of Gene Activity in Epithelial Cells of Nasal Mucous Membrane in Patients with Polypous Rhinosinusitis

Designing a freeform optic for oblique illumination

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