The hybrid coupling element for light-correcting in Natural Light Illumination Systems (NLIS)

Allen Jong-Woei Whang; Chang Ya Hui; Lee Tsung-Xian; Chen Yi Yung

doi:10.1117/12.2003026

25 March 2013 The hybrid coupling element for light-correcting in Natural Light Illumination Systems (NLIS)

Allen Jong-Woei Whang, Chang Ya Hui, Lee Tsung-Xian, Chen Yi Yung

Proceedings Volume 8620, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices II; 86201T (2013) https://doi.org/10.1117/12.2003026
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

Sunlight is the most environmental-friendly energy. Through the Natural Light Illumination Systems (NLIS^®), we can guide sunlight indoors to use. However, due to the construction cost of the NLIS^®, the most cost is spent on the optical fiber. Therefore we intend to design an element that can re-shape the beam from the SunLego^reg; to be narrower, where SunLego^® is the building unit of NLIS^®for light collection. The element consists of two functional optical structures: the first structure is to convert light from SunLego^® to parallel beam, technically, is to convert stray light to parallel. We design the first structure based on free form principle. The second is a fan-shaped structure, which is to reduce the light transmission area , this design is based on the E'tendue principle. The reduction of area means we can use smaller fiber for later light transmission, which is crucial to reduce material cost.

Citation Download Citation

Allen Jong-Woei Whang, Chang Ya Hui, Lee Tsung-Xian, and Chen Yi Yung "The hybrid coupling element for light-correcting in Natural Light Illumination Systems (NLIS)", Proc. SPIE 8620, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices II, 86201T (25 March 2013); https://doi.org/10.1117/12.2003026

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KEYWORDS

Optical fibers

Light

Light sources

Light sources and illumination

Coating

Optical components

Waveguides

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