Type

Conference Proceedings

Authors

Charles Markham
Fiachra Matthews
Tomas Ward
Christopher J Soraghan

Subjects

Physics

Topics
near infrared optical laser diodes infrared sources electronic engineering brain computer interface heat conduction optical detectors

Optical Safety Assessment of a Near-Infrared Brain-Computer Interface (2008)

Abstract This paper describes a safety assessment study of near-infrared sources used in an optical brain-computer interface (BCI). The measurement elements of an optical BCI consist of sets of optical sources and detectors. Our current system utilises sources which comprise of dual wavelength light emitting diodes (LED) at 760nm and 880nm. An optical analysis demonstrated that NIR radiation is a negligible source of heating in this case. LED heat conduction however is a major source of heating, and LEDs, though much safer than laser diodes, have been known to cause burns if improperly used. We describe a procedure by which we measure the heat conduction effect of LEDs. We show that the LED systems used in our current generation BCI produce safe levels of thermal energy and are within published safety levels.
Collections Ireland -> Maynooth University -> Subject = Science & Engineering: Electronic Engineering
Ireland -> Maynooth University -> Subject = Science & Engineering
Ireland -> Maynooth University -> Academic Unit = Faculty of Science and Engineering
Ireland -> Maynooth University -> Academic Unit = Faculty of Science and Engineering: Electronic Engineering
Ireland -> Maynooth University -> Status = Published
Ireland -> Maynooth University -> Type = Conference or Workshop Item
Ireland -> Maynooth University -> Open Access DRIVERset

Full list of authors on original publication

Charles Markham, Fiachra Matthews, Tomas Ward, Christopher J Soraghan

Experts in our system

1
Charles Markham
Maynooth University
Total Publications: 64
 
2
Tomas Ward
Maynooth University
Total Publications: 189