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Null-Screen design for freeform surface testing

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In this work, we present the null-screen design for testing the shape of freeform surfaces. To validate the proposed method, we calculated the null-screen for the Zernike surface (n=3, m=−3), with a peak to valley (PV) of 31.765 mm and 5.559 mm rms.

© 2019 The Author(s)

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