Abstract
In this paper is described the automatic spectrophotometric measurement by controlling the integration of photocurrent of photoelectric receptor.
The photometric system is composed of a photoelectric receptor and a voltage-to-frequency converter (V-F-C) with integral function, and is so compensated to have constant sinsitivity through the spectrum by controlling the integral time of V-F-C at each wavelength. The integral time is calculated from the spectral energy distribution of the radiation of standard lamp.
It is demonstrated that the automatic apparatus for the controlling integration method can measure easily and quickly the relative spectral sensitivity distribution of photoelectric receptor, or the spectral energy distribution of the radiation of light source.
