8 October 2015 Light source design for spectral tuning in biomedical imaging
Author Affiliations +
J. of Medical Imaging, 2(4), 044501 (2015). doi:10.1117/1.JMI.2.4.044501
We propose an architecture with a remote phosphor-based modular and compact light-emitting diode (LED) light source in a noncontact dermoscope prototype for skin cancer screening. The spectrum and color temperature of the output light can easily and significantly be changed depending on spectral absorption characteristics of the tissues being imaged. The new system has several advantages compared to state-of-the-art phosphor converted ultrabright white LEDs, used in a wide range of medical imaging devices, which have a fixed spectrum and color temperature at a given operating point. In particular, the system can more easily be adapted to the requirements originating from different tissues in the human body, which have wavelength-dependent absorption and reflectivity. This leads to improved contrast for different kinds of imaged tissue components. The concept of such a lighting architecture can be vastly utilized in many other medical imaging devices including endoscopic systems.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Chandrajit Basu, Sebastian Schlangen, Merve Meinhardt-Wollweber, Bernhard Roth, "Light source design for spectral tuning in biomedical imaging," Journal of Medical Imaging 2(4), 044501 (8 October 2015). https://doi.org/10.1117/1.JMI.2.4.044501

Light sources

Light emitting diodes


Biomedical optics

Blue light emitting diodes


Imaging systems


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