Wide FOV metalens for near-infrared capsule endoscopy: advancing compact medical imagingDIAGNOSTIC imagingTRANSFER functionsCAPSULE endoscopyOPTICSBANDWIDTHSThis study presents the design, fabrication, and characterization of a wide field-of-view (FOV) metalens optimized for capsule endoscopy. The metalens ...
optical projection, augmented/virtual reality, and miniaturized medical imaging tools. Typically, aberration-free imaging with a wide FOV is achieved by stacking multiple refractive lenses (as in a “fisheye” lens), adding to the size and weight of the optical system....
Engelberg et al., “Near-IR wide-field-of-view Huygens metalens for outdoor imaging applications.” Nanophotonics 9.2 (2020): 361-370. Eye Tracking Market worth $1,786 million by 2025. Markets and Markets. Accessed at https://www.marketsandmarkets.com/PressReleases/eye-tracking.asp on Sep...
We show that for metalenses with a relatively large numerical aperture (NA), there is a tradeoff between the maximum achievable bandwidth and the FOV; interestingly, however, the bandwidth reduction saturates beyond a certain FOV that depends on the NA of the metalens. These findings may provide...
Recently, the emergency of meta- optics provides an alternative to constructing compact and lightweight large-FOV metalens through elaborated phase modulation within a flat surface, showing great potential in surveillance, unmanned vehicles, onboard planes or satel- lites, medical science, and other ...
An analytical model is discussed, and wide-FOV achromatic metalens designs developed with a combination of direct search optimization and deep learning algorithms is presented.Fan YangProceedings of SPIE
Conventional wide FOV optics rely on cascading multiple refractive optical elements to assemble 'fisheye lenses' that correct third-order Seidel aberrations. Here we experimentally demonstrate a flat lens design that achieves 140 FOV in the long-wave infrared band. The metalens was fabricated on a ...
We present a BA&WFOV metalens-doublet with an f-number of 3.9, a full field of view (FOV) of 68 degrees, and a wavelength range from 640 nm to 820 nm . This metalens-doublet exhibits diffraction -limited focusing with an average absolute focusing efficiency of 16% and an average ...
3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical apertureHIGH resolution imagingNUMERICAL aperturesNONDESTRUCTIVE testingREFRACTIVE indexTHREE-dimensional printingTerahertz (THz) lens constitutes a vital component in the THz system...
Here, a methodology to extend the FOV of metalens is presentedrnby exploring the local catenary optical fields and symmetry transformationrnfrom rotational symmetry to transversal symmetry. As a proof of the concept,rna high efficiency (>80% even when the incidence angle is titled by 60°) and...