| 摘要 |
PROBLEM TO BE SOLVED: To accurately measure optical characteristics of an optical system under test. SOLUTION: The measuring method comprises steps 113, 114 for moving a spot image and a specified measuring region relatively, and measuring the quantity of a light arriving at a specified measuring region at every position of the relative movement; step 115 for obtaining a waveform showing the quantity change of the light arriving at the measuring region due to the position relation change of the spot image and the specified measuring region, based on the measurement result, and obtaining position information of the spot image, based on the obtained waveform; and step 116 for obtaining optical characteristics of an optical system under test, based on the obtained position information of the spot image. |
