Diffraction Gratings for Uniform Light Extraction from Light Guides

Micheal McLamb; Yanzeng Li; Serang Park; Marc Lata; Tino Hofmann

doi:10.1109/HONET.2019.8908123

Diffraction Gratings for Uniform Light Extraction from Light Guides

Micheal McLamb
, Yanzeng Li
, Serang Park
, Marc Lata
, Tino Hofmann

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

A theoretical approach for uniformly extracting light propagating through a light guide plate is developed here. Typically, liquid crystal display modalities utilize a backlit lighting system illuminated from the edge with light emitting diodes. The backlight acts as a light guide plate and is coupled with a diffuser sheet along the surface to uniformly extract the light. Our approach employs sub-micron diffraction gratings and eliminates the need for diffuser sheets, while ensuring the uniform extraction of light. The physical dimensions of the grating are varied along the surface of the light guide plate to control the diffraction efficiency, thus determining the local viewing angle and emitted intensity.

Original language	English (US)
Title of host publication	HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities
Subtitle of host publication	Improving Quality of Life using ICT, IoT and AI
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	220-222
Number of pages	3
ISBN (Electronic)	9781728139715
DOIs	https://doi.org/10.1109/HONET.2019.8908123
State	Published - Oct 2019
Externally published	Yes
Event	16th IEEE International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI, HONET-ICT 2019 - Charlotte, United States Duration: Oct 6 2019 → Oct 9 2019

Publication series

Name	HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI

Conference

Conference	16th IEEE International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI, HONET-ICT 2019
Country/Territory	United States
City	Charlotte
Period	10/6/19 → 10/9/19

All Science Journal Classification (ASJC) codes

Artificial Intelligence
Computer Networks and Communications
Computer Science Applications
Computer Vision and Pattern Recognition
Energy Engineering and Power Technology
Control and Optimization
Safety Research
Urban Studies

Access to Document

10.1109/HONET.2019.8908123

Cite this

McLamb, M., Li, Y., Park, S., Lata, M., & Hofmann, T. (2019). Diffraction Gratings for Uniform Light Extraction from Light Guides. In HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI (pp. 220-222). Article 8908123 (HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/HONET.2019.8908123

McLamb, Micheal ; Li, Yanzeng ; Park, Serang et al. / Diffraction Gratings for Uniform Light Extraction from Light Guides. HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 220-222 (HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI).

@inproceedings{b486260c69b645e38e23ce3006e96321,

title = "Diffraction Gratings for Uniform Light Extraction from Light Guides",

abstract = "A theoretical approach for uniformly extracting light propagating through a light guide plate is developed here. Typically, liquid crystal display modalities utilize a backlit lighting system illuminated from the edge with light emitting diodes. The backlight acts as a light guide plate and is coupled with a diffuser sheet along the surface to uniformly extract the light. Our approach employs sub-micron diffraction gratings and eliminates the need for diffuser sheets, while ensuring the uniform extraction of light. The physical dimensions of the grating are varied along the surface of the light guide plate to control the diffraction efficiency, thus determining the local viewing angle and emitted intensity.",

author = "Micheal McLamb and Yanzeng Li and Serang Park and Marc Lata and Tino Hofmann",

note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 16th IEEE International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI, HONET-ICT 2019 ; Conference date: 06-10-2019 Through 09-10-2019",

year = "2019",

month = oct,

doi = "10.1109/HONET.2019.8908123",

language = "English (US)",

series = "HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "220--222",

booktitle = "HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities",

address = "United States",

}

McLamb, M, Li, Y, Park, S, Lata, M & Hofmann, T 2019, Diffraction Gratings for Uniform Light Extraction from Light Guides. in HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI., 8908123, HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI, Institute of Electrical and Electronics Engineers Inc., pp. 220-222, 16th IEEE International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI, HONET-ICT 2019, Charlotte, United States, 10/6/19. https://doi.org/10.1109/HONET.2019.8908123

Diffraction Gratings for Uniform Light Extraction from Light Guides. / McLamb, Micheal; Li, Yanzeng; Park, Serang et al.
HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI. Institute of Electrical and Electronics Engineers Inc., 2019. p. 220-222 8908123 (HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Diffraction Gratings for Uniform Light Extraction from Light Guides

AU - McLamb, Micheal

AU - Li, Yanzeng

AU - Park, Serang

AU - Lata, Marc

AU - Hofmann, Tino

PY - 2019/10

Y1 - 2019/10

N2 - A theoretical approach for uniformly extracting light propagating through a light guide plate is developed here. Typically, liquid crystal display modalities utilize a backlit lighting system illuminated from the edge with light emitting diodes. The backlight acts as a light guide plate and is coupled with a diffuser sheet along the surface to uniformly extract the light. Our approach employs sub-micron diffraction gratings and eliminates the need for diffuser sheets, while ensuring the uniform extraction of light. The physical dimensions of the grating are varied along the surface of the light guide plate to control the diffraction efficiency, thus determining the local viewing angle and emitted intensity.

AB - A theoretical approach for uniformly extracting light propagating through a light guide plate is developed here. Typically, liquid crystal display modalities utilize a backlit lighting system illuminated from the edge with light emitting diodes. The backlight acts as a light guide plate and is coupled with a diffuser sheet along the surface to uniformly extract the light. Our approach employs sub-micron diffraction gratings and eliminates the need for diffuser sheets, while ensuring the uniform extraction of light. The physical dimensions of the grating are varied along the surface of the light guide plate to control the diffraction efficiency, thus determining the local viewing angle and emitted intensity.

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DO - 10.1109/HONET.2019.8908123

M3 - Conference contribution

AN - SCOPUS:85076363298

T3 - HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI

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BT - HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities

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McLamb M, Li Y, Park S, Lata M, Hofmann T. Diffraction Gratings for Uniform Light Extraction from Light Guides. In HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI. Institute of Electrical and Electronics Engineers Inc. 2019. p. 220-222. 8908123. (HONET-ICT 2019 - IEEE 16th International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI). doi: 10.1109/HONET.2019.8908123

Diffraction Gratings for Uniform Light Extraction from Light Guides

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