Cymtec Consortium to present manuscript at Photonics West 2012
Friday 20 January 2012
Cymtec and their strategic alliance partner ICL will be presenting a manuscript at Photonics West 2012. This manuscript has been jointly developed between Cymtec and ICL and will be presented by Dr Dan Elson. The manuscript presents the findings from the initial testing of an LED light source for endoscopy which both Cymtec and ICL have been working on since mid-2010. Please see the abstract for the manuscript:
Light-emitting diode (LED) based endoscopic illumination devices have been shown to have several benefits over arc-lamp systems. LEDs are energy-efficient, small, durable, and inexpensive, however their use in endoscopy has been limited by the difficulty in efficiently coupling enough light into the endoscopic light cable. We have demonstrated a highly homogenised lightpipe LED light source that combines the light from four Luminus LEDs emitting in the red, green, blue and violet using innovative dichroics that maximise light throughput. The light source spectrally combines light from highly divergent incoherent sources that have a Lambertian intensity profile to provide illumination matched to the acceptance numerical aperture of a liquid light guide or fibre bundle. The LED light source was coupled to a standard laparoscope and performance parameters (power, luminance, colour temperature) compared to a xenon lamp. Although the total illuminance from the endoscope was lower, adjustment of the LEDs’ relative intensities enabled contrast enhancement in biological tissue imaging. The violet LED also makes fluorescence imaging of protoporphyrins IX for photodynamic diagnosis in bladder cancer detection possible. The LED light engine has been evaluated in a minimally invasive surgery box trainer where it was used to generate ‘narrowband’ images.
For the full manuscript please click the below.
SPIE LED Manuscprit