  A new imaging technique for $\alpha$-particles using a fast optical camera
focused on a thin scintillator is presented. As $\alpha$-particles interact in
a thin layer of LYSO fast scintillator, they produce a localized flash of
light. The light is collected with a lens to an intensified optical camera,
Tpx3Cam, with single photon sensitivity and excellent spatial & temporal
resolutions. The interactions of photons with the camera is reconstructed by
means of a custom algorithm, capable of discriminating single photons using
time and spatial information.
