| 摘要 |
Measurement of a scanning optical system is to be carried out simply and easily. According to the invention, a scanning optical system measuring device for making adjustment of a scanning optical system which performs scanning with a light beam, includes: plural one-dimensional position detection devices provided at a distance from each other in a scanning direction of a light beam caused to perform scanning, and arranged to intersect the scanning direction of the light beam, and configured to output light receiving position of the light beam caused to perform scanning, as an analog signal; and a detection signal processing unit configured to detect scanning state of the light beam on the basis of a detection signal of the one-dimensional position detection devices.
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