Extending the Depth of Field in a Fixed Focus Lens Using Axial Colour

Niamh Fitzgerald; Alexander V. Goncharov; Christopher Dainty

doi:10.1364/IODC.2017.ITh4A.4

Optical Design and Fabrication 2017 (Freeform, IODC, OFT)
OSA Technical Digest (online) (Optica Publishing Group, 2017),
paper ITh4A.4
•https://doi.org/10.1364/IODC.2017.ITh4A.4

Extending the Depth of Field in a Fixed Focus Lens Using Axial Colour

Niamh Fitzgerald, Alexander V. Goncharov, and Christopher Dainty

International Optical Design Conference 2017

Denver, Colorado United States
9–13 July 2017
ISBN: 978-1-943580-31-6

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Design for Computational Imaging (ITh4A)

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N. Fitzgerald, A. V. Goncharov, and C. Dainty, "Extending the Depth of Field in a Fixed Focus Lens Using Axial Colour," in Optical Design and Fabrication 2017 (Freeform, IODC, OFT), OSA Technical Digest (online) (Optica Publishing Group, 2017), paper ITh4A.4.

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Abstract

We propose a method of extending the depth of field to twice that achievable with conventional photographic lenses using axial colour introduced by dual flash illumination. The lens parameters can be found analytically via raytracing.

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