2022
DOI: 10.1364/optica.446063
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Planar wide-angle-imaging camera enabled by metalens array

Abstract: Wide-angle imaging is an important function in photography and projection, but it also places high demands on the design of the imaging components of a camera. To eliminate the coma caused by the focusing of large-angle incident light, traditional wide-angle camera lenses are composed of complex optical components. Here, we propose a planar camera for wide-angle imaging with a silicon nitride metalens array mounted on a CMOS image sensor. By carefully designing proper phase p… Show more

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Cited by 86 publications
(45 citation statements)
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“…Overall, we believe that our demonstration provides a new technique for designing the multifunctional flat lens, and may find unique applications. [ 49 ] For example, one can study the interaction between structured light and structured materials in nanoscale. Using the presented flat lens, we can overcome depolarization effect of a tightly focused structured light, in order to achieve topology‐preserving light beams such as the vortex beam and vector beam in the nanoscale.…”
Section: Discussionmentioning
confidence: 99%
“…Overall, we believe that our demonstration provides a new technique for designing the multifunctional flat lens, and may find unique applications. [ 49 ] For example, one can study the interaction between structured light and structured materials in nanoscale. Using the presented flat lens, we can overcome depolarization effect of a tightly focused structured light, in order to achieve topology‐preserving light beams such as the vortex beam and vector beam in the nanoscale.…”
Section: Discussionmentioning
confidence: 99%
“…And they successfully realized high-quality imaging with a viewing angle as large as 120°, by a very compact meta device (Figure 4F). [121] 4 | META STRUCTURES DESIGN AND OPTIMIZATION…”
Section: Metalensmentioning
confidence: 99%
“…(F) Metalens array-based wide-angle camera, which can realize high-quality imaging with a viewing angle as large as 120°. [121] F I G U R E 5 Metastructure simulation and optimization. (A) Schematic of a rectangular meta-atom capped by SU-8 polymer and the simulated phase maps plotted for transverse electric (TE) and transverse magnetic (TM) polarizations.…”
Section: Design Through Numerical Simulationsmentioning
confidence: 99%
“…Due to the presence of an extra aperture, imaging components are facing lower focusing efficiency (FE) and larger longitudinal dimensions. The multi-metalens array with larger profiles also can perform 120° FOV imaging with efficiency from 65 to 40% through 17 metalens combination with NA = 0.32 . The quadratic phase (QP) method by transforming the rotational symmetry of the off-axis incident light to the translational symmetry could also expand the FOV to 170° with low efficiency from 3.5 to 0.5% at NA = 0.8 .…”
Section: Introductionmentioning
confidence: 99%
“…34 imaging with efficiency from 65 to 40% through 17 metalens combination with NA = 0.32. 35 The quadratic phase (QP) method 36−39 by transforming the rotational symmetry of the off-axis incident light to the translational symmetry could also expand the FOV to 170°with low efficiency from 3.5 to 0.5% at NA = 0.8. 38 In imaging applications, the doublets configuration separated by the spacer and introducing multiple components would take up considerable space and go against the miniaturization of imaging devices.…”
Section: ■ Introductionmentioning
confidence: 99%