The present disclosure is directed to imaging device, systems, and methods for collecting optical data for use with spectrometers. An imaging device configured in accordance with one aspect of the disclosure includes a lens configured to introduce light into the imaging device along an optical path, and an image sensor spaced apart from the lens and configured to receive at least a portion of the light along the optical path. The imaging device further includes a filter assembly positioned between the lens and the image sensor, and a reflector or mirror carried by the filter assembly. The filter assembly is configured to move the reflector between first and second positions. In the first position the reflector is at least partially aligned with the optical path and reflects at least a portion of the light to a corresponding light input for a spectrometer. In the second position the reflector is positioned outside of the optical path.