APPARATUS FOR MEASURING LIGHT CHARACTERISTIC OF PHOTODEVICE Russian patent published in 1994 - IPC

FIELD: measurement technology. SUBSTANCE: apparatus has a linearly increasing brightness light source with linearly increasing voltage generator and light output linearization unit, recording unit and photomultiplier tube the anode of which is coupled with j-th diode of the photomultiplier tube through an auxiliary resistor, delay line, isolating capacitor. Upon non-linearly appearing in the photomultiplier tube anode characteristic a voltage proportional to an absolute magnitude of an amplitude of deviation current from linear dependence occurs across a dinode load. EFFECT: enhanced accuracy in measuring light characteristic of photomultiplier tube and in determining its gain factor. 2 cl, 2 dwg