Programmable Metamaterial Optical Lens MetaLens Deep Dive: A Single Film Replacing an Entire Lens Assembly
Harvard spinoff Metalenz launches third-gen metalens MetaLens, achieving all functions of traditional multi-element lens assemblies through nanostructure arrays at just 1% the thickness.
Slimming Down Optical Systems
When you disassemble a smartphone camera module, you find it packed with multiple glass and plastic elements, autofocus motors, and optical image stabilization components — parts that consume precious internal space and cause the camera bump.
Harvard spinoff Metalenz today released its third-generation metalens MetaLens. Composed of billions of nano-scale titanium dioxide pillars arranged on a flat glass substrate, each pillar precisely controls the phase of light passing through it through its shape and orientation. The entire lens is less than a millimeter thick, weighs under 0.1 grams, yet achieves all optical functions of a traditional multi-element lens assembly.
From Curved to Flat
MetaLens's breakthrough in the third generation is support for full visible-spectrum imaging. Previous metalenses primarily operated in near-infrared; the broadband nature of visible light (400-700nm wavelength range) made chromatic aberration correction extremely difficult. Metalenz solved this through "dispersion engineering" — designing nano-pillar geometries to produce precisely compensating phase shifts for different wavelengths.
Applications
MetaLens's most direct application is further thinning smartphone camera modules. But implications extend to medical endoscopes, AR glasses waveguide couplers, and solid-state LiDAR beam steering. Metalenz has signed cooperation agreements with three major smartphone manufacturers and two automotive Tier 1 suppliers.
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