A phosphor protection film that includes two films that are bonded to each other via an adhesive layer. One of the two films is a film including an inorganic film layer. In the phosphor protection film, when the film including the inorganic film layer of the two films is a barrier film and the other film of the two films is a support film, the support film has a thickness occupying 72% or more of the total thickness of the phosphor protection film.

A wavelength conversion member including a wavelength conversion layer containing a fluoride phosphor, quantum dots, a surfactant, and a resin. The fluoride phosphor contains fluoride particles having a specific composition and having particle size values within specific ranges. The quantum dots include at least one selected from a first crystalline nanoparticle and a second crystalline nanoparticle. The first crystalline nanoparticle has a specific composition. When irradiated with light having a wavelength of 450 nm, the first crystalline nanoparticle emits light having an emission peak at a wavelength in a range from 510 nm to 535 nm, and a full width at half maximum of the emission peak of the first crystalline nanoparticle is in a range from 10 nm to 30 nm. The second crystalline nanoparticle includes a chalcopyrite-type crystalline structure, and a full width at half maximum of the emission peak of the second crystalline nanoparticle is 45 nm or less.

A method of forming an ophthalmic laminate lens, includes: forming a planar laminate by adhering a first polycarbonate layer to a first side of a thermoplastic elastomer layer, and adhering a second polycarbonate layer to a second side of the thermoplastic elastomer layer, the first polycarbonate layer having a thickness greater than 250 μm, the second polycarbonate layer having a thickness greater than 250 μm, and the thermoplastic elastomer layer having a thickness in a range of 15 μm to 150 μm; thermoforming the planar laminate into a curved laminate, the curve laminate having a pre-molding curvature; arranging the curved laminate in a mold; and molding, via the mold set at a predetermined temperature and a predetermined pressure, the curved laminate with a polymer melt into a curved lens.

To provide a quantum dot-containing resin sheet or film, a method for producing the same, and a wavelength conversion member that can, in particular, solve the problem of aggregation of the quantum dots and the problem with the use of a scattering agent, suppress a decrease in light conversion efficiency, and improve the light conversion efficiency of a resin molded product containing quantum dots. The quantum dot-containing resin sheet or film of the present invention includes a stack of a plurality of resin layers, at least one of the resin layers containing quantum dots, and the plurality of resin layers is integrally molded through co-extrusion.

A system having a concealed communications element like a telecommunication antenna is described. More specifically, The system has a communications element that is concealed by a highly reflective multilayer polymer optical film 200. The first element of the multilayer polymer optical film is a core layer 202 that is made up of a multilayer optical stack. The multilayer optical stack of core layer 202 includes two alternating polymeric layers. The multilayer polymer optical film may optionally also include a protective layer 204 (for example, a hardcoat or an over laminate) that is positioned between the viewer and the core layer. The protective layer 204 may include one or more UV absorbers to aid in durability of the multilayer polymer optical film against UV-degradation. Multilayer polymer optical film 200 may optionally also include an adhesive layer 208 that is positioned between the core layer 202 and a surface onto which the multilayer polymer optical film is to be adhered.

Provided is a manufacturing method of an optical film, which manufactures an optical film in which at least a first film and a second film are stacked, the method including: pressing the first film and the second film with the optical film by passing both the first film and the second film between a pair of pressing rolls; forming a slit line in a width direction of the optical film by cutting the second film without cutting the first film at a rear end of a connection portion when the connection portion is included, to which a unit film is connected by a connection member between the first film and the second film which are pressed in the pressing; and conveying the optical film by passing the optical film with the slit line in the slit forming between a pair of conveying rolls.

An optical film includes a plurality of polymeric layers. A plot of an average layer thickness versus a layer number of the polymeric layers includes a knee region separating a left region including at least N1 sequentially arranged polymeric layers where the polymeric layers have lower layer numbers from a middle region including at least N2 sequentially arranged polymeric layers where the polymeric layers have higher layer numbers. N1 is greater than about 50 and N2 is greater than about 10. A linear fit to the at least N1 sequentially arranged polymeric layers in the left region has a positive linear slope having a magnitude of greater than about 0.04 nm per layer number, and a linear fit to the at least N2 sequentially arranged polymeric layers in the middle region has a negative linear slope having a magnitude of greater than about 0.05 nm per layer number.

The present disclosure provides for articles that can exhibit structural colors through the use of an optical stack and a cover release layer, where the cover release layer is disposed on an externally (or outwardly) facing surface of the optical stack. The optical stack can be disposed on a substrate, which can be disposed on a surface of an article or the optical stack can be disposed on a surface of the article. The cover release layer can be disposed on the optical stack on the side opposite the substrate or article surface so it is on the externally facing surface and can be viewed by an observer. When exposed to visible light, the optical stack imparts a structural color, where the structural color is visible color produced, at least in part, through optical effects (e.g., through scattering, refraction, reflection, interference, and/or diffraction of visible wavelengths of light). The structural color can have a single color or be multicolor, including iridescent. The cover release layer is disposed over (e.g., at least portions) of the optical stack so that the structural color is not present since it is not exposed to light, but when the cover release layer is removed, the optical stack can impart structural color. The cover release layer can be removed by abrasion (e.g., intentional or unintentional), where the abrasion can be applied to the cover release layer that causes separation of the cover release layer from the optical stack.

Polarizing beam splitter plates and systems incorporating such beam splitter plates are described. The polarizing beam splitter plate includes a first substrate and a multilayer optical film reflective polarizer that is disposed on the first substrate. The polarizing beam splitter plate includes a first outermost major surface and an opposing second outermost major surface that makes an angle of less than about 20 degrees with the first outermost major surface. The polarizing beam splitter plate is adapted to reflect an imaged light received from an imager towards a viewer or screen with the reflected imaged light having an effective pixel resolution of less than 12 microns.

Retroreflective article and precursor articles formed during the preparation of the retroreflective articles are provided. Also, methods of making both the precursor articles and the retroreflective articles are provided. The retroreflective articles and the precursor articles contain a reflective layer that includes both a reflective metal and a polymeric blend. The polymeric blend includes both a fluorinated polymer and a (meth)acrylate polymer. The retroreflective articles typically have anti-staining properties, anti-corrosion properties, or both.