In:
Journal of the Optical Society of America A, Optica Publishing Group, Vol. 38, No. 12 ( 2021-12-01), p. 1810-
Abstract:
Illuminating or imaging samples
from a broad angular range is essential in a wide variety of computational 3D imaging and
resolution-enhancement techniques, such as optical projection tomography, optical diffraction tomography, synthetic aperture
microscopy, Fourier ptychographic microscopy, structured illumination microscopy, photogrammetry, and optical coherence refraction
tomography. The wider the angular coverage, the better the resolution enhancement or 3D-resolving capabilities. However, achieving such
angular ranges is a practical challenge, especially when approaching ± 90 ∘ or beyond. Often, researchers resort
to expensive, proprietary high numerical aperture (NA) objectives or to rotating the sample or source-detector pair, which sacrifices
temporal resolution or perturbs the sample. Here, we propose several new strategies for multiangle imaging approaching 4pi steradians using
concave parabolic or ellipsoidal mirrors and fast, low rotational inertia scanners, such as galvanometers. We derive theoretically and
empirically relations between a variety of system parameters (e.g., NA, wavelength, focal length, telecentricity) and achievable
fields of view (FOVs) and importantly show that intrinsic tilt aberrations do not restrict FOV for many
multiview imaging applications, contrary to conventional wisdom. Finally, we present strategies for avoiding spherical aberrations at
obliquely illuminated flat boundaries. Our simple designs allow for high-speed multiangle imaging for microscopic, mesoscopic, and
macroscopic applications.
Type of Medium:
Online Resource
ISSN:
1084-7529
,
1520-8532
DOI:
10.1364/JOSAA.440592
Language:
English
Publisher:
Optica Publishing Group
Publication Date:
2021
SSG:
24,1
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