PHOTOCURRENT AMPLIFIER CIRCUIT AND OPTICAL PICK-UP DEVICE

摘要

A photocurrent amplifier circuit which freely combines photocurrent obtained by light receiving devices and amplifies the combined photocurrents includes: light receiving devices which generate photocurrent in accordance with the amount of light received; amplifier circuits; and device selector switches which are connected between the amplifier circuits and the light receiving devices, in which the number of device selector switches connected to each of the light receiving devices is the same as the number of the amplifier circuits.