Spherical coded imagers: improving lens speed, depth-of-field, and manufacturing yield through enhanced spherical aberration and compensating image processing

M. Dirk Robinson; Guotong Feng; David G. Stork

doi:10.1117/12.826609

21 August 2009 Spherical coded imagers: improving lens speed, depth-of-field, and manufacturing yield through enhanced spherical aberration and compensating image processing

M. Dirk Robinson, Guotong Feng, David G. Stork

Author Affiliations +

Proceedings Volume 7429, Novel Optical Systems Design and Optimization XII; 74290M (2009) https://doi.org/10.1117/12.826609
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

Recently, joint analysis and optimization of both the optical sub-system and the algorithmic capabilities of digital processing have created new digital-optical imaging systems with system-level benefits. We explore a special class of digital-optical imaging systems called spherical coding that combine lens systems having controlled amounts of spherical aberration with digital sharpening filters to achieve fast, low-cost, extended depth-of-field (EDoF) imaging systems. We provide analysis of the optimal amount of spherical aberration required as a function of desired depth-of-field extension. We also characterize the MSE-optimal filters required to restore contrast. Finally, we describe a simple method to designing spherical coded systems and demonstrate several advantages such as improved manufacturing yield using an actual lens design.

Citation Download Citation

M. Dirk Robinson, Guotong Feng, and David G. Stork "Spherical coded imagers: improving lens speed, depth-of-field, and manufacturing yield through enhanced spherical aberration and compensating image processing", Proc. SPIE 7429, Novel Optical Systems Design and Optimization XII, 74290M (21 August 2009); https://doi.org/10.1117/12.826609

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