A light control film is described comprising alternating transmissive regions and absorptive regions disposed between a light input surface and a light output surface. The absorptive regions have an aspect ratio of at least 30. In some embodiments, the alternating transmissive regions and absorptive regions have a transmission as measured with a spectrophotometer at a viewing angle of 0 degrees of at least 35, 40, 45, or 50% for a wavelength of the range 320-400 nm (UV) and/or at least 65, 70, 75, or 80% for a wavelength of the range 700-1400 nm (NIR). In another embodiment, the absorptive regions block light at the light input surface and light output surface and the maximum surface area that is blocked is less than 20% of the total alternating transmissive regions and absorptive regions. Also described are various optical communication systems comprising the light control films described herein and methods.

The optical film according to the present invention uses polymethylmethacrylate that does not comprise cyclic monomers, but has excellent dimensional stability and optical properties, and thus, can be usefully used as a protection film of a polarization plate.

An optical device is disclose herein. In some embodiments, an optical device includes an active liquid crystal element film, wherein the active liquid crystal element film comprises two base films, an active liquid crystal layer present between the two base films, wherein the active liquid crystal layer contains a liquid crystal compound and is capable of switching between a first oriented state and a second oriented state, and a polarizing coating layer, wherein the polarizing coating layer is present between one of the two base films and the active liquid crystal layer. The optical device is capable of varying transmittance, and can be used for various applications such as sunglasses, AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.

A method to make dyed functional film comprising the steps of providing a soluble polymer material; adding an appropriate solvent to the polymer material to make a soluble polymer solution; providing a soluble dye; adding an appropriate solvent to the dye to make a soluble dye solution; adding the dye solution to the polymer or PVA solution, and introducing the dyed polymer or PVA solution to a solution casting device; removing a thin dyed functional film from the casting device; and letting the dyed functional film dry and solidified.

Three or more base optical materials are selectively combined into a trans-gradient index (GRIN) optical element (e.g., a lens). A wavelength-dependent index of refraction for light propagating perpendicular to the three or more optical materials equals: a volume fraction of a first optical material multiplied by a refractive index of the first optical material, plus a volume fraction of a second optical material multiplied by a refractive index of the second optical material, plus one minus the volume fraction of the first optical material and the volume of the second optical material all multiplied by the refractive index of a third optical material. The wavelength-dependent index of refraction distribution and a refractive index dispersion through the GRIN optical element may be independently specified from one another. A local refractive index at any point in the optical element is a fixed function of a refractive index of each individual optical material.

A display substrate and a manufacturing method thereof and a display panel. The display substrate includes a display area and a reflective layer, and at least a portion of the reflective layer is in the display area. The reflective layer includes a metasurface facing a display side of the display substrate, and the metasurface includes a plurality of convex structures which have metamaterial properties and are scattered.

The present disclosure provides an optical compensation film, a photomask, and an exposure apparatus. The optical compensation film includes a first region of the optical compensation film and a second region of the optical compensation film. The first region of the optical compensation film is positioned to correspond to an overlapping portion of the prisms, and is configured to allow light to pass therethrough and impinge on the overlapping portion of the prisms. The second region of the optical compensation film is positioned to correspond to a non-overlapping portion of the prisms, and is configured to allow light to pass therethrough and impinge on the non-overlapping portion of the prisms. Light transmittance of the first region of the optical compensation film is greater than light transmittance of the second region of the optical compensation film.

An optical sheet of the present invention includes a specific wavelength absorption layer that contains a polycarbonate as a main material and a light absorbing agent that absorbs light of a specific wavelength out of light in a wavelength range of 350 nm to 740 nm, in which the polycarbonate has a viscosity average molecular weight Mv of 20,000 to 30,000. In addition, the specific wavelength absorption layer further includes an ultraviolet absorbing agent that absorbs light in a wavelength range of 100 nm to 420 nm.

The present invention relates to a polarization filter for ophthalmic lenses. The polarization filter comprises a mesogen layer coated onto a retardation film, either directly or through an adhesive layer. The present invention further discloses that the polarization filter formed by employing a thin film or sheet, having a defined level of retardation between the light source and the mesogen layer, for example, a cholesteric mesogen layer, the multilayered laminate structure demonstrates linear polarization of the light transmitted through the mesogen laminate structure, and, hence, can be used in ophthalmic lenses, e.g. spectacle or eyeglass lenses. The polarization filter enhances the performance by allowing transmission of the polarization filter closer to the theoretical maximum transmission.

Provided are a novel solid-based upconversion film having high emission efficiency and a method for producing the upconversion film. An upconversion film according to the present invention is a stretched film formed of a composition at least including an acceptor, a donor, and a matrix resin, wherein the matrix resin is a poly(vinyl alcohol)-based resin, and the matrix resin is oriented by stretching. A method for producing an upconversion film according to the present invention is a method for producing a photon upconversion film including a step of stretching a composition at least including an acceptor, a donor, and a matrix resin, wherein the matrix resin is a poly(vinyl alcohol)-based resin, and the stretching is wet-stretching in an aqueous solution of boric acid.