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. 2019 Feb 11;27(4):5048–5064. doi: 10.1364/OE.27.005048

Fig. 3.

Fig. 3

Axial dimensions of (a) total length L and (b) working distance dwork. To meet the requirements of L ≤ 300 mm and dwork ≥120 mm, R1 should be in the range of 55 mm – 88.36 mm (yellow-shaded areas).