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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 1, Iss. 5 — Dec. 1, 2010
  • pp: 1480–1490

Illumination devices for photodynamic therapy of the oral cavity

Cristina Canavesi, Florian Fournier, William J. Cassarly, Thomas H. Foster, and Jannick P. Rolland  »View Author Affiliations

Biomedical Optics Express, Vol. 1, Issue 5, pp. 1480-1490 (2010)

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Three compact and efficient designs are proposed to deliver an average irradiance of 50 mW/cm2 with spatial uniformity well above 90% over a 25 mm2 target area for photodynamic therapy of the oral cavity. The main goal is to produce uniform illumination on the target while limiting irradiation of healthy tissue, thus overcoming the need of shielding the whole oral cavity and greatly simplifying the treatment protocol. The first design proposed consists of a cylindrical diffusing fiber placed in a tailored reflector derived from the edge-ray theorem with dimensions 5.5 × 7.2 × 10 mm3; the second device combines a fiber illuminator and a lightpipe with dimensions 6.8 × 6.8 × 50 mm3; the third design, inspired by the tailored reflector, is based on a cylindrical diffusing fiber and a cylinder reflector with dimensions 5 × 10 × 11 mm3. A prototype for the cylinder reflector was built that provided the required illumination for photodynamic therapy of the oral cavity, producing a spatial uniformity on the target above 94% and an average irradiance of 51 mW/cm2 for an input power of 70 mW.

© 2010 OSA

OCIS Codes
(170.5180) Medical optics and biotechnology : Photodynamic therapy
(220.1770) Optical design and fabrication : Concentrators
(170.2945) Medical optics and biotechnology : Illumination design
(080.3685) Geometric optics : Lightpipes

ToC Category:
Optical Therapies and Photomodificaton

Original Manuscript: October 5, 2010
Revised Manuscript: November 18, 2010
Manuscript Accepted: November 22, 2010
Published: November 23, 2010

Cristina Canavesi, Florian Fournier, William J. Cassarly, Thomas H. Foster, and Jannick P. Rolland, "Illumination devices for photodynamic therapy of the oral cavity," Biomed. Opt. Express 1, 1480-1490 (2010)

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