28 March 2020 Analysis of light extraction in light pipes by linear and elliptical grooves using different source aperture angles
Author Affiliations +
Abstract

An analytical and numerical analysis of light extraction from light pipes using total internal reflection grooves with linear and elliptical profiles is presented. We performed the study considering light sources with different aperture angles, such as sunlight delivered by optical fibers and LEDs. With this analysis, we propose an analytical model based on the edge ray concept that allows selecting the most convenient profile, size, and orientation of the groove to extract light with a desired illumination area according to the source aperture angle employed in the light pipe system. We also have numerically found that for sources with high aperture angles, the light extracted by the linear and elliptical grooves produces similar irradiance and angular distributions, whereas for sources with low aperture angles, the elliptical groove focuses the extracted light and produces a higher angular distribution in comparison to this obtained with the linear groove. Our results are scalable to different light pipe dimensions and provide a systematic way to obtain preliminary designs of grooves for lighting systems that employ optical sources with different aperture angles.

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2020/$28.00 © 2020 SPIE
Guillermo Ezequiel Sánchez-Guerrero, Perla M. Viera-González, Edgar Martínez-Guerra, and Daniel Enrique Ceballos Herrera "Analysis of light extraction in light pipes by linear and elliptical grooves using different source aperture angles," Optical Engineering 59(3), 035107 (28 March 2020). https://doi.org/10.1117/1.OE.59.3.035107
Received: 28 November 2019; Accepted: 16 March 2020; Published: 28 March 2020
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Light

Optical engineering

Commercial off the shelf technology

Sensors

Light emitting diodes

Light sources

Numerical analysis

RELATED CONTENT

Far-field condition for OLED light sources
Proceedings of SPIE (September 18 2013)
Maximizing useful SSL lifetime
Proceedings of SPIE (January 26 2004)
Capsule pressure sensor with optical fiber coupling
Proceedings of SPIE (September 24 1996)
Research on a curved optical fiber
Proceedings of SPIE (April 01 1991)

Back to Top