An object of the present invention is to provide a chemically strengthened glass that can effectively suppress strength of a glass from being deteriorated even though performing chemical strengthening and has high transmittance (that is, low reflectivity). The present invention relates to a chemically strengthened glass having a compressive stress layer formed on a surface layer thereof by an ion exchange method, in which the glass contains sodium and boron, and has a delta transmittance being +0.1% or more, and in which a straight line obtained by a linear approximation of a hydrogen concentration Y in a region of a depth X from an outermost surface of the glass satisfies a specific relational equation in X=0.1 to 0.4 (m).

A glass sheet comprising at least one antireflective, etched surface having a surface roughness defined, when measured on an evaluation length of 12 mm and with a Gaussian filter with a cut-off wavelength is 0.8 mm, by: 0.02Ra0.6 m; 0.1Rz3 m; and 5RSm180 m. The glass sheet has the following optical properties, when measured from the antireflective, etched surface: a haze value of from 1 to 40%; a clarity value of from 30 to 100%; a gloss value at 60 of from 20 to 130 SGU; and a luminous reflectance Rc from 4 to 7%. The antireflective, etched surface comprises implanted ions. Such a glass sheet is particularly suitable for display applications as cover glass and has excellent sparkle reduction properties together with an anti-glare effect.

Provided is a manufacturing method for a thin phosphor glass plate by which a thin phosphor glass plate can be more certainly produced. A manufacturing method includes the steps of: preparing a phosphor glass base material 21 having a first principal surface 21a and a second principal surface 21b opposed to each other; placing the phosphor glass base material 21 on a stage 22 and fixing the second principal surface 21b onto the stage 22; and polishing the first principal surface 21a of the phosphor glass base material 21 with a polishing member 23 including an abrasive layer 24.

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.

Smoothness of glass is improved. A polishing slurry (A) contains amorphous carbon and water, and a total amount of the amorphous carbon and the water is equal to or more than 90% of the whole polishing slurry in terms of mass ratio.

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 (R.sub.a) from about 10 nm to about 1000 nm.

A micro-optical element is provided that includes a glass substrate, a microstructure layer, and a bonding strength between the glass substrate and microstructure layer. The glass substrate has a thickness of less than or equal to 1500 m and exhibits a glue contact angle of less than 45. The microstructure layer is formed from polymer imprinted on the glass substrate. The bonding strength is larger than 0.5 MPa.

The present invention relates to a cover glass for a display, which is a glass plate having a first main surface and a second main surface. The cover glass contains, as represented by mol percentage based on oxides, from 50 to 75% of SiO.sub.2, from 5 to 20% of Al.sub.2O.sub.3, from 2 to 20% of Na.sub.2O, from 0 to 6% of K.sub.2O, from 0 to 15% of MgO, from 0 to 10% of a total amount (CaO+SrO+BaO) of CaO, SrO and BaO, from 0 to 5% of a total amount (ZrO.sub.2+TiO.sub.2) of ZrO.sub.2 and TiO.sub.2, from 0 to 10% of B.sub.2O.sub.3, and from 0 to 20% of Li.sub.2O. The cover glass has a ream minimum distance of 100 mm or more and 1,000 mm or less, and a ream period of 1 mm or more and 30 mm or less.

The purpose of the present invention is to provide a chemically-strengthened glass exhibiting both surface strength and abrasion-resistant anti-fingerprint (AFP) properties. The present invention relates to a plate-shaped chemically-strengthened glass which has a compressive stress layer provided to a glass surface layer, a glass surface hydrogen concentration profile in a specific range, and a surface strength and abrasion-resistant anti-fingerprint (AFP) properties which are in specific ranges.

A glass article having a low level of grainy appearance that can appear to have a shift in the pattern of the grains with changing viewing angle of a display, or sparkle. The glass articlewhich, in some embodiments, is a transparent glass sheethas small-angle-scattering properties and/or distinctness-of-reflected-image (DOI), leading to improved viewability in display applications, especially under high ambient lighting conditions. In some embodiments, the antiglare surface of the glass sheet is an etched surface, with no foreign coating present on the antiglare surface.