Quality control of image sensors using gaseous tritium light sources

in: Philosophical Transactions of the Royal Society A-Mathematical Physical and Engineering Sciences (2022)
McFadden, David; Amos, Brad; Heintzmann, Rainer
We propose a practical method for radiometrically calibrating cameras using widely available gaseous tritium light sources (betalights). Along with the gain (conversion factor) and read noise level, the predictable photon flux of the source allows us to gauge the quantum efficiency. The design is easily reproducible with a 3D printer (three-dimensional printer) and three inexpensive parts. Suitable for common image sensors, we believe that the method has the potential to be a useful tool in microscopy facilities and optical laboratories alike. This article is part of the Theo Murphy meeting issue ‘Super-resolution structured illumination microscopy (part 2)’.

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