Extraction optics for high lumen density sources

Autor: Dick K. G. de Boer, Ludo Haenen

Publikováno v: Journal of the European Optical Society-Rapid Publications, Vol 15, Iss 1, Pp 1-8 (2019)

Abstract For lighting applications demanding high brightness, a new type of LED-based light source has been developed, the high lumen density (HLD) source (luminance > 2·109 cd/m2). The performance can be improved further, among other things by opti

Externí odkaz: https://doaj.org/article/6c3b5da48016408dad1135b1925c2292

Directional Emission of Fluorescent Dye-Doped Dielectric Nanogratings for Lighting Applications

Autor: Romeo Beccherelli, Roberto Caputo, Marc A. Verschuuren, Dimitrios C. Zografopoulos, Frank Kong, H. Paul Urbach, Antonio Ferraro, Dick K. G. de Boer

Publikováno v: ACS applied materials & interfaces
info:cnr-pdr/source/autori:Ferraro, Antonio; Zografopoulos, Dimitrios C.; Verschuuren, Marc A.; de Boer, Dick K. G.; Kong, Frank; Urbach, H. Paul; Beccherelli, Romeo; Caputo, Roberto/titolo:Directional Emission of Fluorescent Dye-Doped Dielectric Nanogratings for Lighting Applications/doi:10.1021%2Facsami.8b08971/rivista:ACS applied materials & interfaces (Print)/anno:2018/pagina_da:24750/pagina_a:24757/intervallo_pagine:24750–24757/volume:10

By structuring a luminescent dielectric interface as a relief diffraction grating with nanoscale features, it is possible to control the intensity and direction of the emitted light. The composite structure of the grating is based on a fluorescent dy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e208d391dc0bae3d047e7060379583f3
https://pubmed.ncbi.nlm.nih.gov/29975042

High lumen density sources based on LED-pumped phosphor rods: opportunities for performance improvement

Autor: Henri Jagt, Dominique M. Bruls, Dick K. G. de Boer, Christoph G. A. Hoelen

Publikováno v: Sixteenth International Conference on Solid State Lighting and LED-based Illumination Systems.

Recently, LED-based sources with high luminance (109 cd/m2 ) have been developed. These sources can be applied in projection systems, as well as in other applications requiring high luminance. The technology makes use of a transparent phosphor rod th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7b5a5799c2990faa3368f9f4cab96d6a
https://doi.org/10.1117/12.2275729

LED light engine concept with ultra-high scalable luminance

Autor: Rolf Koole, Yun Li, Dick K. G. de Boer, Joost van der Eyden, Patrick Van De Voorde, Vincent Vanbroekhoven, Mo Mirsadeghi, John-John Pieter Jan Van Den Bergh, Christoph G. A. Hoelen, Dominique M. Bruls

Publikováno v: SPIE Proceedings.

Although LEDs have been introduced successfully in many general lighting applications during the past decade, high brightness light source applications are still suffering from the limited luminance of LEDs. High power LEDs are generally limited in l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94ed0f590004c4fe0c5870d30d432bb0
https://doi.org/10.1117/12.2224042

Increased efficiency of luminescent solar concentrators after application of organic wavelength selective mirrors

Autor: Chi-Wen Lin, Dick K. G. de Boer, Cees W. M. Bastiaansen, Dirk J. Broer, Paul P. C. Verbunt, Michael G. Debije, Shufen Tsoi

Publikováno v: Optics Express, 20(55), A655-A668. Optical Society of America (OSA)

Organic wavelength-selective mirrors are used to reduce the loss of emitted photons through the surface of a luminescent solar concentrator (LSC). A theoretical calculation suggests that application of a 400 nm broad reflector on top of an LSC contai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f25cbdf8b4142decc4936a80bb2b4815
https://doi.org/10.1364/oe.20.00a655