Cloaking of metal grid electrodes on Lambertian emitters by free-form refractive surfaces

被引：7

作者：

Schumann, Martin F. ^{[1
,2
]}

Fritz, Benjamin ^{[3
]}

Eckstein, Ralph ^{[3
,4
]}

Lemmer, Uli ^{[3
,5
]}

Gomard, Guillaume ^{[3
,5
]}

Wegener, Martin ^{[1
,2
]}

机构：

[1] KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany

[2] KIT, Inst Appl Phys, D-76128 Karlsruhe, Germany

[3] KIT, Light Technol Inst, D-76128 Karlsruhe, Germany

[4] InnovationLab, Speyerer Str 4, D-69115 Heidelberg, Germany

[5] KIT, Inst Microstruct Technol, D-76021 Karlsruhe, Germany

来源：

OPTICS LETTERS | 2018年 / 43卷 / 03期

关键词：

LIGHT-EMITTING-DIODES; SOLAR-CELLS; DEVICES; OLEDS; DISPLAYS;

D O I：

10.1364/OL.43.000527

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss invisibility cloaking of metal grid electrodes on Lambertian light emitters by using dielectric free-form surfaces. We show that cloaking can be ideal in geometrical optics for all viewing directions if reflections at the dielectric-air interface are negligible. We also present corresponding white-light proof-of-principle experiments that demonstrate close-to-ideal cloaking for a wide range of viewing angles. Remaining imperfections are analyzed by ray-tracing calculations. The concept can potentially be used to enhance the luminance homogeneity of large-area organic light-emitting diodes. (C) 2018 Optical Society of America

引用

页码：527 / 530

页数：4

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