| 摘要 |
PURPOSE:To obtain accurate intensity distribution even if there is an irregularity in the characteristics of a photosensor, by measuring the output characteristic of each photosensor containing an amplifier using a calibration beam sensor and applying predetermined correction to an actual measured value. CONSTITUTION:A calibration spot beam source 21 and a monitor sensor 23 are placed on the optical axis between a lens 4 and a detector 5 and, in such a state that the spot beam source 21 does not light, the output signal of each photosensor constituting the detector 5 is stored in RAM 11. Next, the brightness of the spot beam source 21 is gradually raised by a controller 22, and the output at a saturated point of each photosensor and the output of the monitor sensor 23 at that time are stored in RAM 11. Thereafter, a value obtained by measuring the particle group to be tested of a flow cell actually by the spot beam source 1 is subjected to predetermined operation based on the data stored in RAM 11 to calculate intensity distribution wherein the irregularity of each photosensor and an amplifier 7 is corrected. |
