Optical design methods to suppress aberrations which are caused by change of object distance

Shunsuke Hase; Masato Shibuya; Kazuhisa Maehara; Mikio Oka; Suezou Nakadate

doi:10.1117/12.896762

21 September 2011 Optical design methods to suppress aberrations which are caused by change of object distance

Shunsuke Hase, Masato Shibuya, Kazuhisa Maehara, Mikio Oka, Suezou Nakadate

Proceedings Volume 8167, Optical Design and Engineering IV; 81670Y (2011) https://doi.org/10.1117/12.896762
Event: SPIE Optical Systems Design, 2011, Marseille, France

Abstract

An object distance range within which fine image can be obtained by focus adjustment is limited since aberrations are caused by change of object distance. We have developed a novel optical design method to suppress variation of coma, astigmatism and field curvature induced by change of object distance. Variation of astigmatism and field curvature can be suppressed by introducing appropriate distortion. Also variation of coma caused by change of object distance can be suppressed by using spherical image surface which pivot is located at the center of exit pupil.

Citation Download Citation

Shunsuke Hase, Masato Shibuya, Kazuhisa Maehara, Mikio Oka, and Suezou Nakadate "Optical design methods to suppress aberrations which are caused by change of object distance", Proc. SPIE 8167, Optical Design and Engineering IV, 81670Y (21 September 2011); https://doi.org/10.1117/12.896762

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