SENSITIVITY ADJUSTING METHOD FOR PHOTOMULTIPLIER, SCANNING TYPE LASER MICROSCOPE INTRODUCING THE SAME METHOD AND RECORDING MEDIUM RECORDING SENSITIVITY ADJUSTING PROGRAM

摘要

PROBLEM TO BE SOLVED: To keep luminance information from the same sample constant by setting a photoreceiving sensitivity extent the same even in the case of using a photomultiplier whose photoreception sensitivity is much varied between individuals. SOLUTION: The sample 15 is irradiated with a light beam emitted from a laser light source 1, and the light from the sample 15 is received by the photomultiplier 19 so as to obtain the luminance information, and a voltage applied by an apply voltage supply part 22 is adjusted so that an output value obtained when the light from the sample as an adjustment reference is received by the photomultiplier 19 may be at a prescribed level. And the applied voltage at this time is stored by a memory part 23 as the voltage reference value, and also, the voltage to be applied by the supply part 22 to the photomultiplier 19 is adjusted by a sensitivity adjusting part 241 to which the sensitivity adjusting extent is assigned based on the voltage reference value.