TY - JOUR
T1 - Null-screen design for highly freeform surface testing
AU - AGUIRRE-AGUIRRE, DANIEL
AU - VILLALOBOS-MENDOZA, BRENDA
AU - DIAZ-URIBE, RUFINO
AU - CAMPOS-GARCIA, MANUEL
N1 - Publisher Copyright:
© 2020 Optical Society of America.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11/23
Y1 - 2020/11/23
N2 - A new alternative to calculate the null-screen for highly freeform or complex surfaces for any desired pattern to be observed on the detector is presented. To validate the proposed method, we used the Zernike polynomials to design complex surfaces with sagittas greater or equal to 40 mm, and peak to valley greater or equal to 30 mm, between the used surface and the best fit sphere. The freeform surfaces were fabricated using a 3D printer and a five-axis CNC machine. With the proposed method we can calculate the image that will be observed over the detector for any null-screen and any freeform surface that want to be analyzed. The results showed that the proposal works very well for extremely fast complex freeform surfaces (with slopes ≤ 80°), obtaining an error smaller than 0.66% in PV and 0.36% in rms in sagitta differences.
AB - A new alternative to calculate the null-screen for highly freeform or complex surfaces for any desired pattern to be observed on the detector is presented. To validate the proposed method, we used the Zernike polynomials to design complex surfaces with sagittas greater or equal to 40 mm, and peak to valley greater or equal to 30 mm, between the used surface and the best fit sphere. The freeform surfaces were fabricated using a 3D printer and a five-axis CNC machine. With the proposed method we can calculate the image that will be observed over the detector for any null-screen and any freeform surface that want to be analyzed. The results showed that the proposal works very well for extremely fast complex freeform surfaces (with slopes ≤ 80°), obtaining an error smaller than 0.66% in PV and 0.36% in rms in sagitta differences.
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U2 - 10.1364/OE.409073
DO - 10.1364/OE.409073
M3 - Article
AN - SCOPUS:85097307529
VL - 28
SP - 36706
EP - 36722
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 24
ER -