Patent ID: 7629997
Filing Date: 2009-12-08
Classification: G03G

Abstract:
1. An information reader comprising: an imaging device that images a subject illuminated with light in a first wavelength region; an information-reading unit that reads information expressed by a site absorbing light in a second wavelength region, which is equal to or narrower than the first wavelength region contained in the subject, based on imaging signals from the imaging device; and an information output unit, wherein the imaging device is a stack-typed imaging device that comprises a plurality of pixel sections containing stacked two photoelectric conversion devices, with each of the two photoelectric conversion devices receiving light from the same position of the subject and converting it into the imaging signal, the two photoelectric conversion devices are a first photoelectric conversion device having sensitivity in the second wavelength region and a second photoelectric conversion device having sensitivity in a third wavelength region, which includes the second wavelength region and is wider than the second wavelength region, and the information output unit generates the information based on a first imaging signal obtained from the first photoelectric conversion device and a second imaging signal obtained form the second photoelectric conversion device, and outputs the information.