| 摘要 |
The present invention provides a measurement apparatus which measures a height of a test surface, the apparatus including an image sensing device including a plurality of detection units configured to detect interfering light formed by measurement light from the test surface and reference light from a reference surface, and an optical system configured to guide the measurement light and the reference light to the plurality of detection units, wherein the reference surface is placed such that differences are generated among optical path differences between measurement light beams and reference light beams which enter the plurality of detection units, respectively.
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