Abstract: Disclosed is a window for a sensing system comprising a substrate, a first layered film comprising alternating layers of higher and lower index materials, and a second layered film comprising alternating layers of higher and lower index materials. The window comprises a maximum hardness, measured at the first layered film and by the Berkovich Indenter Hardness Test, of at least 8 GPa. The first and second layered films are configured so that the window has favorable antireflective and transmission attributes in an infrared wavelength range of interest, while providing relatively low reflectance and transmittance in the visible spectrum to provide a dark appearance and low signal noise.

Abstract: A coated textured glass article is described herein that comprises: a glass body comprising a first surface; a plurality of polyhedral surface features extending from the first surface; and a coating disposed on the first surface of the body and the plurality of polyhedral surface features. Each of the plurality of polyhedral surface features comprises a base on the first surface and a plurality of facets extending from the base and converging toward one another. The coating comprises a multilayer interference stack.

Abstract: A substrate for a display article includes (a) a primary surface; and (b) a textured region on at least a portion of the primary surface, the textured region comprising: (i) one or more higher surfaces residing at a higher mean elevation parallel to a base-plane disposed below the textured region and extending through the substrate; (ii) one or more lower surfaces residing at a lower mean elevation parallel to the base-plane that is less than the higher mean elevation; and (iii) a high-index material disposed on each of the one or more lower surfaces residing at the lower mean elevation, the high-index material forming one or more intermediate surfaces residing at an intermediate mean elevation parallel to the base-plane that is greater than the lower mean elevation but less than the higher mean elevation.

Abstract: A window for a sensing system is provided that includes: a substrate comprising an outer and an inner primary surface; an outer layered film disposed on the outer primary surface; and an inner layered film disposed on the inner primary surface. Each of the outer and inner layered films comprises alternating high index and low index layers. The outer layered film comprises a scratch resistant layer having a thickness from about 0.5 ?m to about 10 ?m, and exhibits a hardness of at least 11 GPa, as measured with a Berkovich Indenter Hardness Test. The window exhibits an average transmittance of greater than 85% within ±25 nm of at least one wavelength within the infrared spectrum from 900 nm to 1600 nm and an average transmittance of less than 5% in the visible spectrum from 420 nm to 650 nm, each at an angle of incidence<15°.

Abstract: Described in the present disclosure are display articles with scattering regions for reducing glare and associated methods. Within the scattering region, a major surface of the display article comprises a plurality of regions comprising a discrete distribution of heights measured relative to an imaginary base plane extending through the display article and parallel to the first major surface. The discrete distribution of heights comprises at least four heights, with each height occupying a surface area percentage of the scattering region that is within 3% of 100%/n, were n is the number of heights. At least two differences between adjacent heights in the discrete distribution of heights are not equal to one another such that the display article exhibits a specular reflectance spectrum comprising two or more local minima over a wavelength range of interest.

Abstract: One or more aspects of the disclosure pertain to an article including an optical film structure disposed on an inorganic oxide substrate, which may include a strengthened or non-strengthened substrate that may be amorphous or crystalline, such that the article exhibits scratch resistance and retains the same or improved optical properties as the inorganic oxide substrate, without the optical film structure disposed thereon. In one or more embodiments, the article exhibits an average transmittance of 85% or more, over the visible spectrum (e.g., 380 nm-780 nm). Embodiments of the optical film structure include aluminum-containing oxides, aluminum-containing oxy-nitrides, aluminum-containing nitrides (e.g., AlN) and combinations thereof. The optical film structures disclosed herein also include a transparent dielectric including oxides such as silicon oxide, germanium oxide, aluminum oxide and a combination thereof. Methods of forming such articles are also provided.

Abstract: Embodiments of a color-neutral anti-reflective coating and articles including the same are described. In one or more embodiments, a substrate includes a first major surface and an anti-reflective coating disposed on the first major surface of the substrate and having a reflective surface opposite the first major surface. In one or more embodiments, a point on the reflective surface has a single-surface reflectance under a D65 illuminant with an angular color variation, ?E? that is less than 5, where ?E?=?{(a*?1?a*?2)2+(b*?1?b*?2)2}, and a*?1 and b*?1 are color values a* and b* values of the point measured from a first angle ?1, and a second angle ?2, where ?1 and ?2 are any two different viewing angles at least 5 degrees apart in a range from about 10° to about 60° relative to a normal vector of the reflective surface.

Abstract: A window for a sensing system includes a first layered film and a second layered film. The first and second layered film each include alternating layers of lower and higher refractive index materials. The first layered film includes a scratch resistant layer such that the window exhibits a maximum nanoindentation hardness of greater than or equal to 10 GPa when indented on the first layered film. The materials and thicknesses of the layers of the first and second layered films are selected such that the window exhibits relatively high transmittance and low reflectance in two distinct wavelength ranges of interest.

Abstract: A substrate for a display article includes (a) a primary surface; and (b) a textured region on at least a portion of the primary surface, the textured region comprising: (i) one or more higher surfaces residing at a higher mean elevation parallel to a base-plane disposed below the textured region and extending through the substrate; (ii) one or more lower surfaces residing at a lower mean elevation parallel to the base-plane that is less than the higher mean elevation; and (iii) a high-index material disposed on each of the one or more lower surfaces residing at the lower mean elevation, the high-index material forming one or more intermediate surfaces residing at an intermediate mean elevation parallel to the base-plane that is greater than the lower mean elevation but less than the higher mean elevation, the high-index material comprising an index of refraction that is greater than the index of refraction of the substrate.

Abstract: Embodiments of a color-neutral anti-reflective coating and articles including the same are described. In one or more embodiments, a substrate includes a first major surface and an anti-reflective coating disposed on the first major surface of the substrate and having a reflective surface opposite the first major surface. In one or more embodiments, a point on the reflective surface has a single-surface reflectance under a D65 illuminant with an angular color variation, ?E? that is less than 5, where ?E?=?{(a*?1?a*?2)2+(b*?1?b*?2)2}, and a*?1 and b*?1 are color values a* and b* values of the point measured from a first angle ?1, and a second angle ?2, where ?1 and ?2 are any two different viewing angles at least 5 degrees apart in a range from about 10° to about 60° relative to a normal vector of the reflective surface.

Abstract: A glass composition includes greater than or equal to 50 mol % and less than or equal to 70 mol % SiO2; greater than or equal to 10 mol % and less than or equal to 20 mol % Al2O3; greater than or equal to 1 mol % and less than or equal to 10 mol % B2O3; greater than or equal to 7 mol % and less than or equal to 14 mol % Li2O; greater than 0 mol % and less than or equal to 8 mol % Na2O; greater than 0 mol % and less than or equal to 1 mol % K2O; greater than or equal to 0 mol % and less than or equal to 7 mol % CaO; greater than or equal to 0 mol % and less than or equal to 8 mol % MgO; and greater than or equal to 0 mol % and less than or equal to 8 mol % ZnO. R2O+R?O is less than or equal to 25 mol %, wherein R2O is the sum of Li2O, Na2O, and K2O and R?O is the sum of CaO, MgO, and ZnO. The glass composition includes at least one of NiO+Co3O4+Cr2O3+CuO is greater than or equal to 0.001 mol %, CeO2 is greater than or equal to 0.1 mol %, and TiO2 is greater than or equal to 0.1 mol %.

Abstract: A cover article is described herein that includes: a substrate comprising an outer and an inner primary surface, the outer and inner primary surfaces opposite of one another; and an optical film structure comprising an outermost surface disposed on the outer or inner primary surface of the substrate. The optical film structure comprises a plurality of alternating high refractive index and low refractive index layers. Each of the high index layers has a refractive index greater than a refractive index of each of the low index layers. Further, the cover article exhibits a substantially constant hue in reflectance with a D65 illuminant, as given by: (a) an exhibited color with a variation in Hue Angle (h*) of less than 60 degrees over a viewing angle range from 0 to 60 degrees; or (b) an exhibited grey hue or silver hue, each with a Chroma (c*) of less than 10.

Abstract: Durable and scratch resistant articles including low-reflectance optical coating with gradient portion. In some embodiments, an article comprises: a substrate comprising a first major surface; and an optical coating disposed over the first major surface. The optical coating comprises: a second major surface; a thickness; and a first gradient portion. A refractive index of the optical coating varies along a thickness of the optical coating. The difference between the maximum refractive index of the first gradient portion and the minimum refractive index of the first gradient portion is 0.05 or greater. The absolute value of the slope of the refractive index of the first gradient portion is 0.1/nm or less everywhere along the thickness of the first gradient portion. The article exhibits a single side photopic average light reflectance of 3% or less, and a maximum hardness from 10 GPa to 30 GPa.

Abstract: A glass article is provided that includes: a glass substrate comprising a thickness and a primary surface; and a textured region defined by the primary surface. The textured region comprises a low spatial frequency region and a high spatial frequency region substantially superimposed within the low spatial frequency region. Further, the low spatial frequency region comprises an average lateral feature size that exceeds an average lateral feature size of the high spatial frequency region. In addition, the textured region comprises a surface roughness (Ra) from about 10 nm to about 1000 nm.

Abstract: A screen protector is described herein that is configured to be releasably attached to an optical coating on a glass-containing display of an electronic device. The protector comprises: a glass-containing substrate comprising an outer and inner primary surface; an antireflective (AR) coating on the outer primary surface; and an interlayer on the inner primary surface for releasable attachment to the optical coating on the display. The interlayer comprises an adhesive, a physical thickness from about 10 ?m to 500 ?m, and one or more refractive indices from ˜1.2 to 1.6. Further, an average photopic reflectance of the screen protector can be less than 2% for all incident angles from 0° to 30°. The interlayer can comprise optically clear adhesive (OCA), polymer-containing layer, and releasable adhesive layers. An anti-splinter (AS) film can be between the interlayer and the substrate. The interlayer and/or AS film may be a cyclo olefin, cellulose triacetate or polyurethane.

Abstract: Embodiments of articles including a low-contrast anti-reflection coating are disclosed. The coated surface of such articles exhibits a reduced difference in reflectance between a pristine state and when a surface defect is present. In one or more embodiments, the coated surface of such articles exhibits a first average reflectance in the range from about 0.6% to about 6.0% in a pristine condition and a second average reflectance of about 8% or less after removal of a surface thickness of the anti-reflection coating. In other embodiments, the coated substrate exhibits a second average reflectance of about 10% or less, when the coated surface comprises a contaminant. In some embodiments, the coated substrate exhibits a first color coordinate (a*1, b*1) in a pristine condition and a second color coordinate (a*2, b*2) after the presence of a surface defect such that ?a*b* is about 6 or less.

Abstract: Embodiments of an enclosure including a substrate having an anti-fingerprint surface are disclosed. The anti-fingerprint surface may include a textured surface, a coated surface or a coated textured surface that exhibits a low fingerprint visibility, when a fingerprint is applied to the anti-fingerprint surface. In one or more embodiments, the enclosure exhibits any one of the following attributes (1) radio, and microwave frequency transparency, as defined by a loss tangent of less than 0.03 and at a frequency range of between 15 MHz to 3.0 GHz; (2) infrared transparency; (3) a fracture toughness of greater than 0.6 MPa·m1/2; (4) a 4-point bend strength of greater than 350 MPa; (5) a Vickers hardness of at least 450 kgf/mm2 and a Vickers median/radial crack initiation threshold of at least 5 kgf; (6) a Young's Modulus in the range from about 50 GPa to about 100 GPa; and (7) a thermal conductivity of less than 2.0 W/m° C.

Abstract: A display article is described herein that includes: a substrate comprising a thickness and a primary surface; a textured surface region; and an antireflective coating disposed on the textured surface region. The textured surface region comprises structural features and an average texture height (Rtext) from 50 nm to 300 nm. The substrate exhibits a sparkle of less than 5%, as measured by PPD140, and a transmittance haze of less than 40%, at a 0° incident angle. The antireflective coating comprises alternating high refractive index and low refractive index layers. Each of the low index layers comprises a refractive index of less than or equal to 1.8, and each of the high index layers comprises a refractive index of greater than 1.8. The article also exhibits a first-surface average photopic specular reflectance (% R) of less than 0.3% at any incident angle from about 5° to 20° from normal at visible wavelengths.

Abstract: A glass article is provided that includes: a glass substrate comprising a thickness and a primary surface; and a textured region defined by the primary surface. The textured region comprises a low spatial frequency region and a high spatial frequency region substantially superimposed within the low spatial frequency region. Further, the low spatial frequency region comprises an average lateral feature size that exceeds an average lateral feature size of the high spatial frequency region. In addition, the textured region comprises a surface roughness (Ra) from about 10 nm to about 1000 nm.

Abstract: According to one or more embodiments described herein, a coated article may comprise: a transparent substrate having a major surface, the major surface comprising a textured or rough surface inducing light scattering; and an optical coating disposed on the major surface of the transparent substrate and forming an air-side surface, the optical coating comprising one or more layers of material, the optical coating having a physical thickness of greater than 300 nm, wherein the coated article exhibits a maximum hardness of about 10 GPa or greater as measured on the air-side surface by a Berkovich Indenter Hardness Test along an indentation depth of about 50 nm or greater.