Citation:

Contreras, J., R. Martins, P. Wojcik, S. Filonovich, H. Águas, L. Gomes, E. Fortunato, and I. Ferreira, "Color sensing ability of an amorphous silicon position sensitive detector array system", Sensor Actuat. A-Phys., vol. 205, pp. 26-37, 2014.

Abstract:

The color sensing ability of a data acquisition prototype system integrating a 32 linear array of 1D amorphous silicon position sensitive detectors (PSD) was analyzed. Besides being used to reproduce a 3D profile of highly reflective surfaces, here we show that it can also differentiate primary red, green, blue (RGB) and derived colors. This was realized by using an incident beam with a RGB color combination and adequate integration times taking into account that a color surface mostly reflects its corresponding color. A mean colorimetric error of 25.7 was obtained. Overall, we show that color detection is possible via the use of this sensor array system, composed by a simpler amorphous silicon pin junction.

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