A contact lens comprises a lens substrate. The lens substrate comprises an inner surface, and an outer surface facing away from the inner surface. The lens substrate further comprises a pupil region, and an annular iris region surrounding the pupil region. The inner surface comprises a first area corresponding to the iris region. The contact lens further comprises a pattern portion formed on the first area. The pattern portion comprises a plurality of nanostructures spaced from each other. Each nanostructure protrudes from the inner surface. The nanostructures and the lens substrate are made of a same material. The disclosure also provides a method for making a contact lens.

UV absorbing appliances, such as contact lenses, are prepared by including at least one UV absorbing compound in the appliances. UV absorbing compounds can be water insoluble and/or reside in UV absorbing nanoparticles having a mean diameter less than 10 nm. The UV absorbing nanoparticles incorporate into an appliance by polymerizing a monomer mixture containing the UV absorbing nanoparticles to form an appliance comprising the UV absorbing nanoparticles. The UV absorbing compounds or the UV absorbing nanoparticles incorporate into an appliance by placing the appliance in a solution of the UV absorbing compound or a dispersion of the UV absorbing nanoparticles in a non-aqueous solvent that swells the appliance. The UV absorbing compound or the UV absorbing nanoparticles infuse into the swollen appliance and are retained within the appliance upon removal of the non-aqueous solvent.

The invention relates to a method for producing embedded hydrogel contact lenses each having a magnetized insert that comprises magnetic particles and is centrally embedded in the bulk hydrogel material of the embedded hydrogel contact lens. During molding, a magnetized insert can be centered and held in position in a lens mold by using a magnet placed below the lens mold. The invention also relates to an embedded hydrogel contact lens produced from a method of the invention.

UV absorbing appliances, such as contact lenses, are prepared by including at least one UV absorbing compound in the appliances. UV absorbing compounds can be water insoluble and/or reside in UV absorbing nanoparticles having a mean diameter less than 10 nm. The UV absorbing nanoparticles incorporate into an appliance by polymerizing a monomer mixture containing the UV absorbing nanoparticles to form an appliance comprising the UV absorbing nanoparticles. The UV absorbing compounds or the UV absorbing nanoparticles incorporate into an appliance by placing the appliance in a solution of the UV absorbing compound or a dispersion of the UV absorbing nanoparticles in a non-aqueous solvent that swells the appliance. The UV absorbing compound or the UV absorbing nanoparticles infuse into the swollen appliance and are retained within the appliance upon removal of the non-aqueous solvent.

An optical element has a base material having a surface and a plurality of structures which are arranged on the surface of the base material at a fine pitch equal to or shorter than the wavelength of visible light and which each includes a convex or concave portion. The elastic modulus of the material forming the structures is 1 MPa or more and 1200 MPa or less, and the surface on which the structures are formed are hydrophilic.

A method of manufacturing a nanopatterned biophotonic structure includes forming a customized nanopattern mask on a substrate using E-beam lithography, providing a biopolymer matrix solution, depositing the biopolymer matrix solution on the substrate, and drying the biopolymer matrix solution to form a solidified biopolymer film. A surface of the film is formed with the nanopattern mask, or a nanopattern is machined directly on a surface of the film using E-beam lithograpy such that the biopolymer film exhibits a spectral signature corresponding to the E-beam lithograpy nanopattern. The resulting bio-compatible nanopatterned biophotonic structures may be made from silk, may be biodegradable, and may be bio-sensing devices. The biophotonic structures may employ nanopatterned masks based on non-periodic photonic lattices, and the biophotonic structures may be designed with specific spectral signatures for use in probing biological substances, including displaying optical activity in the form of opalescence.

UV absorbing appliances, such as contact lenses, are prepared by including at least one UV absorbing compound in the appliances. UV absorbing compounds can be water insoluble and/or reside in UV absorbing nanoparticles having a mean diameter less than 10 nm. The UV absorbing nanoparticles incorporate into an appliance by polymerizing a monomer mixture containing the UV absorbing nanoparticles to form an appliance comprising the UV absorbing nanoparticles. The UV absorbing compounds or the UV absorbing nanoparticles incorporate into an appliance by placing the appliance in a solution of the UV absorbing compound or a dispersion of the UV absorbing nanoparticles in a non-aqueous solvent that swells the appliance. The UV absorbing compound or the UV absorbing nanoparticles infuse into the swollen appliance and are retained within the appliance upon removal of the non-aqueous solvent.

A manufacturing method, manufacturing device, a multi-layer metalens are provided. The the multi-layer metalens comprises a plurality of N structured surfaces arranged in a vertical direction on one surface of a wafer, N2. The manufacturing method includes: when a target surface to be manufactured is a first structured surface, manufacturing the first structured surface on a target surface of the wafer; the first structured surface includes a plurality of nanostructures and a location marker; and the plurality of nanostructures are arranged in an array; when the target surface to be manufactured is an M.sub.th structured surface, manufacturing an alignment window based on the location marker of the structured surface manufactured previously; and through the alignment window, manufacturing the M.sub.th structured surface based on the location marker of the structured surface manufactured previously.

An integrated laminate structure (702a, 702b, 801) adapted for application in the context of solar technology, includes a first carrier element (704, 804), such as a piece of plastic or glass, optionally including optically substantially transparent material enabling light transmission therethrough, a second carrier element (702, 802) provided with at least one surface relief pattern (802a) including a number of surface relief forms (708) and having at least one predetermined optical function relative to incident light, the second carrier element including optically substantially transparent material enabling light transmission therethrough, the first and second carrier elements being laminated together such that the at least one surface relief pattern has been embedded within the established laminate structure and a number of related cavities (709) have been formed at the interface of the first and second carrier elements. An applicable method of manufacture is presented.