| 摘要 |
A measurement apparatus for measuring wavefront aberration of an optical system to be measured comprises a pinhole mask having a pinhole, an illumination optical system configured to illuminate the pinhole mask, a test pattern disposed between the pinhole mask and the optical system to be measured, a detector configured to detect an image formed on an image plane of the optical system to be measured by light having passed through the pinhole, the test pattern, and the optical system to be measured, and an optical member which is disposed or inserted in the illumination optical system, and configured to control an illuminance distribution in a pupil region of the optical system to be measured so that a peripheral portion in the pupil region includes a portion having an illuminance higher than an illuminance in a central portion in the pupil region.
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