Scurvy and Rickets Masked by Chronic Neurologic Illness: Revisiting “Psychologic Malnutrition”

A photoelectric conversion element comprising a substrate and a light sensor disposed on a surface of the substrate and receiving high speed optical pulse signals and converting them into high frequency waves in which the light sensor comprises at least carbon nano-tubes, as well as a photoelectric conversion device having the element, for directly converting high speed optical pulses signals in a communication band into signals of high frequency waves or electromagnetic waves.