18 September 2007 Aplanatic hybrid lenses
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We propose a novel method to correct the spherical and coma aberration using a hybrid element (refractive-diffractive). The refractive surface is used to correct the coma, we obtain this condition curving the second principal plane and centred it on the axial point image. The diffractive element is used to correct the spherical aberration using an exact ray trace and the diffractive coefficients as variables. The optimization routine is no required. This method can be used for any conjugates position.
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O. Garcia-Liévanos, O. Garcia-Liévanos, S. Vázquez-Montiel, S. Vázquez-Montiel, } "Aplanatic hybrid lenses", Proc. SPIE 6667, Current Developments in Lens Design and Optical Engineering VIII, 66670K (18 September 2007); doi: 10.1117/12.730650; https://doi.org/10.1117/12.730650

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