3 June 2015 Mobile phone based mini-spectrometer for rapid screening of skin cancer
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Abstract
We demonstrate a highly sensitive mobile phone based spectrometer that has potential to detect cancerous skin lesions in a rapid, non-invasive manner. Earlier reports of low cost spectrometers utilize the camera of the mobile phone to image the field after moving through a diffraction grating. These approaches are inherently limited by the closed nature of mobile phone image sensors and built in optical elements. The system presented uses a novel integrated grating and sensor that is compact, accurate and calibrated. Resolutions of about 10 nm can be achieved. Additionally, UV and visible LED excitation sources are built into the device. Data collection and analysis is simplified using the wireless interfaces and logical control on the smart phone. Furthermore, by utilizing an external sensor, the mobile phone camera can be used in conjunction with spectral measurements. We are exploring ways to use this device to measure endogenous fluorescence of skin in order to distinguish cancerous from non-cancerous lesions with a mobile phone based dermatoscope.
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Anshuman Das, Anshuman Das, Tristan Swedish, Tristan Swedish, Akshat Wahi, Akshat Wahi, Mira Moufarrej, Mira Moufarrej, Marie Noland, Marie Noland, Thomas Gurry, Thomas Gurry, Edgar Aranda-Michel, Edgar Aranda-Michel, Deniz Aksel, Deniz Aksel, Sneha Wagh, Sneha Wagh, Vijay Sadashivaiah, Vijay Sadashivaiah, Xu Zhang, Xu Zhang, Ramesh Raskar, Ramesh Raskar, } "Mobile phone based mini-spectrometer for rapid screening of skin cancer", Proc. SPIE 9482, Next-Generation Spectroscopic Technologies VIII, 94820M (3 June 2015); doi: 10.1117/12.2182191; https://doi.org/10.1117/12.2182191
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