Open AccessOversampled triangulation of AWARE-10 monocentric ball lens using an auto-stigmatic microscope
Author(s) -
Hui S. Son,
Daniel L. Marks,
David J. Brady,
Jungsang Kim
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.022206
Subject(s) - optics , lens (geology) , microscope , numerical aperture , ball (mathematics) , position (finance) , triangulation , computer science , sensitivity (control systems) , physics , mathematics , engineering , wavelength , mathematical analysis , geometry , finance , economics , electronic engineering
In our development of multiscale, gigapixel camera architectures, there is a need for an accurate three-dimensional position alignment of large monocentric lenses relative to hemispherical dome structures. In this work we describe a method for estimating the position of the objective lens in our AWARE-10 four-gigapixel camera using the retro-reflected signal of a custom-designed auto-stigmatic microscope. We show that although the physical constraints of the system limit the numerical aperture of the microscope probe beam to around 0.016, which results in poor sensitivity in the axial direction, the lateral sensitivity is more than sufficient to verify that the position of the objective is within optical tolerances.