Flicker measuring device, flicker measuring method and flicker measuring program

摘要

The flicker measuring apparatus of the present invention receives light emitted from an object to be measured, outputs a light-receiving signal corresponding to the amount of received light, and receives the output light during a period from a measurement start time to a steady state when the measurement object is in a steady state. A signal is acquired a plurality of times, each flicker value of an object to be measured is calculated based on the acquired light reception signal, the obtained flicker value is stored in a storage unit in correspondence with the acquisition time of each light reception signal, and flicker using each stored flicker value Calculation processing to obtain shift time is performed, and in the calculation processing, the total amount of change that is the amount of change in the flicker value from the initial flicker value to the normal flicker value is obtained, and the amount of change in the flicker value from the reference flicker value becomes a predetermined ratio of the total amount of change A predetermined time point is obtained, and the elapsed time between the predetermined percentage time point and the reference time point is obtained as a flicker shift time.