Further miniaturization of imaging systems is prevented by the prevalent, traditional bulky
refractive optics today. Meta-optics have recently generated great interest in the visible …

Optics in the mid-wave-infra-red (MWIR) band are generally heavy, thick and expensive.
Here, we demonstrate multi-level diffractive lenses; one designed using inverse design and …

Achromatic metalenses formed using previous design methods face a compromise between
diameter, numerical aperture, and working wave band. To address this problem, the authors …

Diffractive lenses can be very thin and light. They usually suffer from chromatic aberration
and work only over a narrow range of wavelengths but so-called achromatic diffractive …

A broad range of imaging and sensing technologies in the infrared require large field-of-
view (FoV) operation. To achieve this, traditional refractive systems often employ multiple …

Long-wave infrared imaging systems are widely used in the field of environmental
monitoring and imaging guidance. As the core components, the long-wave infrared lenses …

Flat optics have been applied successfully for focusing and imaging for many decades. Their
recent resurgence is fueled by advances in computational electromagnetics and …

Wide-angle metalenses in the longwave infrared have shown great advantages over the
traditional refractive doublets or triplets, due to light weight, CMOS compatibility, and low …

We present a monolithic metalens free of chromatic aberration over the 8–12 μm wavelength
range for thermal imaging. The metalens consists of nano-donut-pillars for dispersion …

We present a theoretical framework for temperature imaging from long-wavelength infrared
thermal radiation (eg 8-12$\mu $ m) through the end-to-end design of a metasurface-optics …