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Applied Optics

Applied Optics


  • Vol. 39, Iss. 24 — Aug. 20, 2000
  • pp: 4366–4371

Bright afterglow illuminator made of phosphorescent material and fluorescent fibers

Mitsunori Saito and Kazuya Yamamoto  »View Author Affiliations

Applied Optics, Vol. 39, Issue 24, pp. 4366-4371 (2000)

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Phosphorescent oxides and fluorescent dyes were used together to create a fiber-type illuminator that glows in the dark without the need for electric power. Dye-doped polymer fibers, which were bundled at one end, were linearly arrayed in a polysiloxane resin that contained phosphorescent oxide particles. The phosphorescent resin continued to glow for a long time even after the excitation light was removed. Organic dyes in a polymer fiber were excited by the phosphorescence and emitted fluorescence toward the fiber end. Fluorescence from a number of dyes was combined in the long fiber, and, consequently a bright light beam emerged from the fiber end. Useful performance, i.e., high power density, narrow beam divergence, and long afterglow, is demonstrated by the prototype fiber illuminator.

© 2000 Optical Society of America

OCIS Codes
(060.2380) Fiber optics and optical communications : Fiber optics sources and detectors
(150.2950) Machine vision : Illumination
(160.2540) Materials : Fluorescent and luminescent materials
(230.6080) Optical devices : Sources
(260.2510) Physical optics : Fluorescence

Original Manuscript: October 28, 1999
Revised Manuscript: April 24, 2000
Published: August 20, 2000

Mitsunori Saito and Kazuya Yamamoto, "Bright afterglow illuminator made of phosphorescent material and fluorescent fibers," Appl. Opt. 39, 4366-4371 (2000)

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