Fast calculation of bokeh image structure in camera lenses with multiple aspheric surfaces

V. P. Sivokon; M. D. Thorpe

doi:10.1117/12.2073070

17 December 2014 Fast calculation of bokeh image structure in camera lenses with multiple aspheric surfaces

V. P. Sivokon, M. D. Thorpe

Proceedings Volume 9293, International Optical Design Conference 2014; 92931P (2014) https://doi.org/10.1117/12.2073070
Event: International Optical Design Conference, 2014, Kohala Coast, Hawaii, United States

Abstract

Three different approaches to calculation of internal structure of bokeh image in camera lenses with two aspheric surfaces are analyzed and compared – the transfer function approach, the beam propagation approach and direct raytracing in an optical design software. The transfer function approach is the fastest and provides accurate results when peak-to-valley of mid-spatial frequency phase modulation induced at the lens exit pupil is below λ/10. Aspheric surfaces are shown to contribute to the bokeh structure differently increasing the complexity of bokeh image especially for offaxis bokeh.

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V. P. Sivokon and M. D. Thorpe "Fast calculation of bokeh image structure in camera lenses with multiple aspheric surfaces", Proc. SPIE 9293, International Optical Design Conference 2014, 92931P (17 December 2014); https://doi.org/10.1117/12.2073070

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KEYWORDS

Phase modulation

Aspheric lenses

Beam propagation method

Lenses

Phase shift keying

Cameras

Objectives

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