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

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available