Light extraction and customized optical distribution from plastic micro-optics integrated OLEDs

P. Melpignano; G. Rotaris; V. Biondo; S. Sinesi; S. Westenhöfer; M. T. Gale; M. Murgia; S. Caria; R. Zamboni

doi:10.1117/12.665515

20 April 2006 Light extraction and customized optical distribution from plastic micro-optics integrated OLEDs

P. Melpignano, G. Rotaris, V. Biondo, S. Sinesi, S. Westenhöfer, M. T. Gale, M. Murgia, S. Caria, R. Zamboni

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Proceedings Volume 6192, Organic Optoelectronics and Photonics II; 61920V (2006) https://doi.org/10.1117/12.665515
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

An OLED device suitable for automobile ceiling lights has been designed, fabricated and evaluated. The OLED structure is fabricated on a thin (120 µm), flexible polymer foil with integrated micro-optics to achieve customized beam shaping in the far field. A pixelated OLED structure matched to a patch-pad microlens matrix was used to convert the OLED Lambertian emission into a Gaussian-shaped illumination beam. Both refractive and diffractive microlenses were investigated. The integrated micro-optics OLED architecture reduces light losses due to waveguiding effects and effectively increases the light extraction by up to 70%.

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P. Melpignano, G. Rotaris, V. Biondo, S. Sinesi, S. Westenhöfer, M. T. Gale, M. Murgia, S. Caria, and R. Zamboni "Light extraction and customized optical distribution from plastic micro-optics integrated OLEDs", Proc. SPIE 6192, Organic Optoelectronics and Photonics II, 61920V (20 April 2006); https://doi.org/10.1117/12.665515

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KEYWORDS

Organic light emitting diodes

Micro optics

OLED lighting

Refractive index

Aluminum

Integrated optics

Interfaces

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