Light-reducing devices that can be removably attached to a window or other panel through which light is able to pass, and methods of using such devices. Such a light-reducing device includes a tinted flexible transparent sheet and a microsuction tape adhered to the tinted flexible transparent sheet. The microsuction tape has a surface with micrometer-sized cavities that create a vacuum when the surface is pressed against a window. At least the surface of the tape is formed of a material that is sufficiently pliable and elastic so that each of the cavities forms a seal against the window and individual vacuums created between the surface and the window releasably secure the light-reducing device to the window when subjected to only the weight of the light-reducing device, but the light-reducing device can be peeled from the window.

Disclosed herein are nanostructured plasmonic materials. The nanostructured plasmonic materials can include a first nanostructured layer comprising: a first layer of a first plasmonic material permeated by a first plurality of spaced-apart holes, wherein the first plurality of spaced apart holes comprise a first array; and a second nanostructured layer comprising a second layer of a second plasmonic material permeated by a second plurality of spaced-apart holes, wherein the second plurality of spaced apart holes comprise a second array; wherein the second nanostructured layer is located proximate the first nanostructured layer; and wherein the first principle axis of the first array is rotated at a rotation angle compared to the first principle axis of the second array.

A projection lens system projects an image of a reduction side into a magnification side in an image projection device, a back glass being disposed on the reduction side. In the projection lens system, all of one or more negative lenses that satisfy, in a surface on the reduction side or a surface on the magnification side, condition |h/H|<2.0 defined by height h of a most off-axis principal ray and height H of an axial ray passing through a highest pupil position satisfy conditions Tn≥98.5% and Dn/Db≤0.05 defined by transmittance Tn, thickness Dn of the negative lens on an optical axis, and total thickness Db of the back glass.

All inorganic perovskites for short-wave IR (SWIR) devices having improved chemical stability and long-term stability. Improved methods of making all inorganic perovskites for short-wave IR (SWIR) devices are also disclosed herein.

Nanoassembly methods for producing quasi-3D plasmonic films with periodic nanoarrays of nano-sized surface features. A sacrificial layer is deposited on a surface of a donor substrate having periodic nanoarrays of nanopattern features formed thereon. A plasmon film is deposited onto the sacrificial layer and a dielectric spacer is deposited on the plasmon film. The donor substrate having the sacrificial layer, plasmon film, and dielectric spacer thereon is immersed in a bath of etchant to selectively remove the sacrificial layer such that the plasmon film and the dielectric spacer thereon adhere to the surface of the donor substrate. The dielectric spacer and the plasmon film are mechanically separated from the donor substrate to define a quasi-three dimensional (3D) plasmonic film having periodic nanoarrays of nano-sized surface features defined by the nanopattern features of the donor substrate surface. The quasi-3D plasmonic film is then applied to a receiver substrate.

Disclosed is a diffractive optical element includes a substrate (BS) having a first surface and a second surface opposite the first surface, being transparent to light in at least one spectral range and having, in the spectral range, a refractive index that is greater than that of water, at least one metasurface able to diffract light radiation of wavelength λ within the spectral range, incident with an angle of incidence, according to a diffracted radiation, so that the diffracted radiation propagates in the substrate and reaches the second surface of the substrate at a diffracted angle θ.sub.d that is greater than or equal to a limit angle (θ.sub.c) of total internal reflection between the substrate and water, the metasurface being designed to have, for the angle of incidence, a transmission with a 0 order of diffraction below 5% and a transmission of the diffracted radiation corresponding to a −1 or +1 order of diffraction above 50%.

Laminated light-blocking decorative articles are prepared by applying an aqueous foamed opacifying composition to a non-woven fabric, drying, laminating a decorative fabric to the resulting dry foamed opacifying layer, and densifying that layer to have a thickness that is at least 20% less than before densifying. This operation can be carried out so that non-woven fabric, decorative fabric, and aqueous foamed opacifying composition are supplied in a single-pass, in-line operation to make any desired quantity of a laminated light-blocking decorative article. The applied aqueous foamed opacifying composition has 35%-70% solids and a foam density of 0.1-0.5 g/cm.sup.3. It is composed of (a) porous particles, (b) a binder material, (c) two or more additives comprising at least one foaming surfactant and at least one foam stabilizer, (d) an aqueous medium, and (e) at least 0.0001 weight % of an opacifying colorant that absorbs electromagnetic radiation having a wavelength of 380-800 nm.

A display panel is provided. The display panel has a display region and a non-display region. The non-display region has an aperture region and a non-aperture region surrounding the aperture region. The display panel includes a plurality of light-emitting elements disposed in the display region. The display panel includes a plurality of first light absorbing patterns and a plurality of second light absorbing patterns disposed in the non-aperture region. The plurality of first light absorbing patterns and the plurality of second light absorbing patterns are configured to absorb different colors of lights.

In example implementations, an apparatus is provided. The apparatus includes a display, an eye barrel, an anti-reflection layer, and a lens. A first end of the eye barrel is coupled to the display. The anti-reflection layer is applied to an inner surface of the eye barrel. The lens is coupled to a second end of the eye barrel.

A process for plasmonic-based high resolution color printing is provided. The process includes a) providing a nanostructured substrate surface having a reverse structure geometry comprised of nanopits and nanoposts on a support, and b) forming a conformal continuous metal coating over the nanostructured substrate surface to generate a continuous metal film, the continuous metal film defining nanostructures for the plasmonic-based high resolution color printing, wherein a periodicity of the nanostructures is equal to or less than a diffraction limit of visible light. A nanostructured metal film or metal-film coated support obtained by the process and a method for generating a color image are also provided.