Share Email Print

Proceedings Paper

Efficient coupling of noncoherent light to fiber optic light guides
Author(s): Ronald F. Mathis
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

The amount of light that can be coupled from a noncoherent lamp into an optical fiber of small size and limited numerical aperture is restricted by fundamental principles. High power lamps have the additional problem that there is too much light resulting in burned fiber or wasted light. This paper describes a new high efficiency coupling approach that is particularly applicable to high power lamps such as the 1000 Watt electrodeless Sulfer lamp manufactured by Fusion LIghting Inc. A semi spherical array of lenses is used to focus light onto individual large core fibers or fiber bundles. The design constraints are the size and shape of the optical source, and the size and numerical aperture of the fibers. The variables are the number of lenses in the array (which determines the number of fibers) and the lens power. There are enough degrees of freedom to design a system that can theoretically couple nearly 100% of the light into the fibers.

Paper Details

Date Published: 3 October 1997
PDF: 5 pages
Proc. SPIE 3139, Nonimaging Optics: Maximum Efficiency Light Transfer IV, (3 October 1997); doi: 10.1117/12.290224
Show Author Affiliations
Ronald F. Mathis, Remote Source Lighting International, Inc. (United States)

Published in SPIE Proceedings Vol. 3139:
Nonimaging Optics: Maximum Efficiency Light Transfer IV
Roland Winston, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?