Light beam shaping for collimated emission from white organic light-emitting diodes using customized lenticular microlens arrays structure

Lei Zhou; Gui-Lin Bai; Xin Guo; Su Shen; Qing-Dong Ou; Yuan-Yuan Fan

doi:10.1063/1.5026836

Light beam shaping for collimated emission from white organic light-emitting diodes using customized lenticular microlens arrays structure

Lei Zhou, Gui-Lin Bai, Xin Guo, Su Shen, Qing-Dong Ou, Yuan-Yuan Fan

Materials Science & Engineering

Research output: Contribution to journal › Article › Research › peer-review

21 Citations (Scopus)

Abstract

We present a design approach to realizing a desired collimated planar incoherent light source (CPILS) by incorporating lenticular microlens arrays (LMLAs) onto the substrates of discrete white organic light-emitting diode (WOLED) light sources and demonstrate the effectiveness of this method in collimated light beam shaping and luminance enhancement simultaneously. The obtained collimated WOLED light source shows enhanced luminance by a factor of 2.7 compared with that of the flat conventional device at the normal polar angle and, more importantly, exhibits a narrowed angular emission with a full-width at half-maximum (FWHM) of ∼33.6°. We anticipate that the presented strategy could provide an alternative way for achieving the desired large scale CPILS, thereby opening the door to many potential applications, including LCD backlights, three-dimensional displays, car headlights, and so forth.

Original language	English
Article number	201902
Number of pages	5
Journal	Applied Physics Letters
Volume	112
Issue number	20
DOIs	https://doi.org/10.1063/1.5026836
Publication status	Published - 14 May 2018

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abstract = "We present a design approach to realizing a desired collimated planar incoherent light source (CPILS) by incorporating lenticular microlens arrays (LMLAs) onto the substrates of discrete white organic light-emitting diode (WOLED) light sources and demonstrate the effectiveness of this method in collimated light beam shaping and luminance enhancement simultaneously. The obtained collimated WOLED light source shows enhanced luminance by a factor of 2.7 compared with that of the flat conventional device at the normal polar angle and, more importantly, exhibits a narrowed angular emission with a full-width at half-maximum (FWHM) of ∼33.6°. We anticipate that the presented strategy could provide an alternative way for achieving the desired large scale CPILS, thereby opening the door to many potential applications, including LCD backlights, three-dimensional displays, car headlights, and so forth.",

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AU - Zhou, Lei

AU - Bai, Gui-Lin

AU - Guo, Xin

AU - Shen, Su

AU - Ou, Qing-Dong

AU - Fan, Yuan-Yuan

PY - 2018/5/14

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N2 - We present a design approach to realizing a desired collimated planar incoherent light source (CPILS) by incorporating lenticular microlens arrays (LMLAs) onto the substrates of discrete white organic light-emitting diode (WOLED) light sources and demonstrate the effectiveness of this method in collimated light beam shaping and luminance enhancement simultaneously. The obtained collimated WOLED light source shows enhanced luminance by a factor of 2.7 compared with that of the flat conventional device at the normal polar angle and, more importantly, exhibits a narrowed angular emission with a full-width at half-maximum (FWHM) of ∼33.6°. We anticipate that the presented strategy could provide an alternative way for achieving the desired large scale CPILS, thereby opening the door to many potential applications, including LCD backlights, three-dimensional displays, car headlights, and so forth.

AB - We present a design approach to realizing a desired collimated planar incoherent light source (CPILS) by incorporating lenticular microlens arrays (LMLAs) onto the substrates of discrete white organic light-emitting diode (WOLED) light sources and demonstrate the effectiveness of this method in collimated light beam shaping and luminance enhancement simultaneously. The obtained collimated WOLED light source shows enhanced luminance by a factor of 2.7 compared with that of the flat conventional device at the normal polar angle and, more importantly, exhibits a narrowed angular emission with a full-width at half-maximum (FWHM) of ∼33.6°. We anticipate that the presented strategy could provide an alternative way for achieving the desired large scale CPILS, thereby opening the door to many potential applications, including LCD backlights, three-dimensional displays, car headlights, and so forth.

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Light beam shaping for collimated emission from white organic light-emitting diodes using customized lenticular microlens arrays structure

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