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Proceedings Paper

Fabrication of LED lighting goggle for surgical operation and approach toward high-color rendering performance
Author(s): Yoichi Kawakami; Junichi Shimada; Shigeo Fujita
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Paper Abstract

The first internal shunt operation in the left forearm has successfully been performed using the surgical lighting goggle composed of InGaN-yttrium aluminum garnet (YAG)-based white light emitting diode(LED) arrays. This system supplies a total luminous flux of about 200 lumen for several hours by driving with rechargeable Li-ion batteries. Further increase in luminous flux can be achieved by both the progress of emission efficiency of white LEDs and the development of dense packaging technique of LED chips. Moreover, the color rendering properties of white LEDs are inferior to the standard illuminant especially in violet, green and red spectral range. In this paper, several device structures are proposed for achieving power lighting and for higher color rendering properties. The key technology for power lighting is how to radiate the heat out of LED chips, and that for higher color rendering is how to add desired illumination-spectral-components to LEDs according to the application fields.

Paper Details

Date Published: 5 December 2001
PDF: 9 pages
Proc. SPIE 4445, Solid State Lighting and Displays, (5 December 2001); doi: 10.1117/12.450039
Show Author Affiliations
Yoichi Kawakami, Kyoto Univ. (Japan)
Junichi Shimada, Kyoto Prefectural Yosanoumi Hospital and Kyoto Prefectural Univ. of Medicine (Japan)
Shigeo Fujita, Kyoto Univ. (Japan)

Published in SPIE Proceedings Vol. 4445:
Solid State Lighting and Displays
Ian T. Ferguson; Yoon-Soo Park; Nadarajah Narendran; Steven P. DenBaars, Editor(s)

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