Abstract: To appropriately transmit far-infrared rays and improve scratch resistance. A far-infrared transmitting member (20) includes a base material (30) that transmits far-infrared rays and a first functional film (32) formed on the base material (30), in which an average transmittance for light having a wavelength of 8 ?m to 12 ?m is 50% or more, an outermost layer (36) of the first functional film (32) is a layer containing ZrO2 as a main component, a content of ZrO2 is 50 mass % or more and 100 mass % or less with respect to the whole outermost layer (36), and a refractive index of the outermost layer (36) with respect to light having a wavelength of 550 nm is 2.05 or more.

Abstract: A reflective mask blank for EUV lithography includes a substrate; a multilayer reflective film that reflects EUV light; a protection film that protects the multilayer reflective film; and an absorption film that absorbs the EUV light. The substrate, the multilayer reflective film, the protection film, and the absorption film are arranged in this order from bottom to top. The protection film includes an upper layer made of a rhodium-based material containing Rh as a main component that contains only Rh, or contains Rh and at least one element selected from a group consisting of N, O, C, B, Ru, Nb, Mo, Ta, Ir, Pd, Zr, and Ti; and a lower layer satisfying a condition k<?0.15n+0.16 in an EUV region where n represents a refractive index and k represents an extinction coefficient.

Abstract: A glass block for a plasma resistant member, including silicon and at least one of magnesium and calcium, in which, in terms of mole percentage based on an oxide, a total content of MgO and CaO is 3.0 mol % or more and less than 29.0 mol %, a content of R2O is 3.0 mol % or more and less than 35.0 mol %, and a content of R12O is 8.0 mol % or less, provided that R1 is an alkali metal element and R2 is an alkaline earth metal element.

Abstract: An optical filter includes: a substrate; a dielectric multilayer film (I) laid on or above one main surface of the substrate; and a dielectric multilayer film (II) laid on or above the other main surface of the substrate, in which the substrate includes a near-infrared ray absorbing glass and a resin film, the resin film includes a resin and a dye (NIR1), and the optical filter satisfies specific spectral characteristics.

Abstract: The present invention relates to an yttrium-based protective film having: a peak intensity ratio of Y5O4F7 in an X-ray diffraction pattern of 80% or more; a porosity of less than 1.5 volume %; and a Vickers hardness of 500 MPa or more. The yttrium-based protective film may have a content of fluorine of 35 atom % to 60 atom %.

Abstract: A reflective mask blank for EUV lithography, the reflective mask blank including: a substrate; a multilayer reflective film configured to reflect EUV light; and an absorption layer configured to absorb EUV light, in this order from a substrate side, in which the absorption layer includes a first absorption film and a second absorption film in this order from the substrate side, the absorption layer has a refractive index for EUV light having a wavelength of 13.5 nm of 0.95 or less, and the first absorption film is more easily chemically dry etched than the second absorption film.

Abstract: To appropriately transmit a far infrared ray and improve scratch resistance. A far-infrared transmitting member 20 includes a substrate 30 that transmits a far infrared ray and a first functional film 32 that is formed on the substrate 30 and includes a NiOx layer 34 containing NiOx as a main component, an average transmittance of light having a wavelength of 8 ?m to 12 ?m is 50% or more, and a maximum value Hmax of indentation hardness in a range of an indentation depth of 40 nm or more and 110 nm or less from the surface of the functional film measured by a nanoindentation method is 10 GPa or more.

Abstract: A windshield for vehicle includes a laminated glass in which a first glass plate and a second glass plate are bonded together with an intermediate film interposed therebetween, in which the laminated glass includes a glass plate with a terminal including the second glass plate, a conductor, and the terminal, the conductor including a terminal joint portion, and the terminal being joined to the terminal joint portion of the conductor through lead-free solder; the conductor includes a feeding portion for feeding electricity to an electric function portion, and the feeding portion includes the terminal joint portion; the glass plate with the terminal includes a light-shielding layer between the second glass plate and at least a part of the conductor including the feeding portion; and a porosity of at least a forming region of the feeding portion in the light-shielding layer is 12% or lower.

Abstract: A near-infrared absorbing dye includes a compound represented by formula (A). Each of R11 to R14 is independently a hydrogen atom, a halogen atom, a hydroxyl group, or an alkyl, aryl or alaryl group. Each of pairs R11 and R12, R12 and R13, and R13 and R14 may combine with one another to form a monocyclic ring or a polycyclic ring in which from 2 to 4 rings are fused. Each of R15 and R16 is independently an alkyl or alaryl group. R15 and R16 may combine with one another to form a cyclohetero ring having from 5 to 10 members together with the nitrogen atom.

Abstract: A glass includes, as represented by mol % of element: 12% to 16% of P; 16% to 21% of Sn; 50% to 60% of O; 5% to 15% of F; 0% to 3% of Zn; 0% to 1% of Si; 0% to 1% of B; and 0% to 3% of Al, and (Sn+Zn)/P is 1.25 to 1.55. A glass transition temperature Tg is 80° C. to 200° C. When an absorbance per 1 mm thickness at a wave number of 3100 cm?1 is defined as A3100 and an absorbance per 1 mm thickness at a wave number of 3240 cm?1 is defined as A3240 in an infrared absorption spectrum, A3240/A3100 is 0.6 to 1.2.

Abstract: Provided is a glass having a high refractive index and capable of suppressing a decrease in transmittance with respect to visible light. A glass (10) has a refractive index of 1.94 or more, an internal transmittance of 70% or more with respect to light having a wavelength of 440 nm at a plate thickness of 10 mm, and a degradation degree (?T) of 2.2% or less in an ultraviolet irradiation test.

Abstract: A laminated glass for an automobile window, the laminated glass including a first glass plate, an intermediate film, and a second glass plate in this order from outside of a vehicle to inside of the vehicle, wherein a plurality of heterogeneous regions formed by a laser are provided in a vicinity of a surface of the first glass plate, a surface of the second glass plate, or the surfaces of the first glass plate and the second glass plate, the surfaces facing the inside of the vehicle, being spaced apart in a plane direction, a ratio of a length in a thickness direction to a circle equivalent diameter in plan view of the heterogeneous regions is 2 or more and 1,000 or less.

Abstract: An alkali-free glass, includes, as represented by mol % based on oxides: 50% to 76% of SiO2; 2% to 6% of Al2O3; 18% to 35% of B2O3; 1% to 3.5% of MgO; 0.5% to 4% of CaO; 1% to 4.5% of SrO; and 0% to 3% of BaO, in which an expression (A) is [MgO]+[CaO]+[SrO]+[BaO], and a value of the expression (A) is 3.5 to 6, an expression (B) is [Al2O3]—([MgO]+[CaO]+[SrO]+[BaO]), and a value of the expression (B) is ?2 to 2, an expression (J) is ([MgO]+[CaO])/([MgO]+[CaO]+[SrO]+[BaO]), and a value of the expression (J) is 0.2 to 0.7, and ??-OH is 0 mm?1 to 0.1 mm?1.

Abstract: A reflective mask blank, which is a binary reflective mask blank, includes, in order: a substrate; a multilayer reflective film configured to reflect EUV light; and a pattern film. The pattern film has a laminated structure including a total of L layers each having a different refractive index where L is a natural number of 2 or more. When an absorption coefficient of an i-th layer in the pattern film from a side opposite to the substrate is defined as ki, a thickness of the i-th layer in the pattern film from the side opposite to the substrate is defined as di (nm), a total thickness of the pattern film is defined as d, an exposure wavelength is defined as ? (nm), and Pi is defined as 1?exp(?2?/?*diki), the following formula (1) is satisfied. ? i = 1 L ( Pi / d ) > 0.

Abstract: A water-repellent glass includes a glass substrate having a first surface, and a water-repellent film deposited on the first surface of the substrate, wherein the first surface of the substrate includes a characteristic region where a part of the substrate is an aggregate of granular formations, the characteristic region including granular features seamlessly extending from the substrate, wherein when a thickness direction of the substrate is referred to as a first direction, a length of the characteristic region in the first direction is within a range of 50-2000 nm, wherein a straight line perpendicular to the first direction includes intersecting parts which intersect granular features included in the characteristic region, and an average length of the intersecting parts is within a range of 20-5000 nm, and wherein at least some of the granular features include a narrowed part where a dimension decreases toward an inner side of the substrate.

Abstract: An antenna unit includes a dielectric layer through which visible light transmits, a first conductor layer, a pseudo layer, and a second conductor layer provided separately from the first conductor layer. At least part of the pseudo layer is disposed around the second conductor layer in a plan view. The inequality |n1?n2|/N?1.09×10?1 holds where n1 and n2 (n1 and n2 are integers equal to or larger than zero) are N-level gradation values (N is a natural number) in a case where a first region that exists without overlapping the second conductor layer in the pseudo layer and a second region that exists without overlapping the pseudo layer in the second conductor layer, respectively, in the plan view are read at a resolution of 400 dpi.

Abstract: Optical filter-type glass contains a P component, a Cu component, and Mo component, is substantially free of F, and includes: in mass % on an oxide basis, 60% to 75% of P2O5; 9% to 16.5% of Al2O3; 4% to 20% of ?R2O, where R2O is one or more components selected from Li2O, Na2O, K2O, Rb2O, and Cs2O, and ?R2O is a total amount of R2O; 0% to 8% of ?R?O, where R?O is one or more components selected from CaO, MgO, BaO, SrO, and ZnO, and ?R?O is a total amount of R?O; more than 7% up to 20% of CuO; and 0.01% to 1.18% of MoO3.

Abstract: The present invention relates to a light guide plate containing a glass plate and a resin layer that is formed on at least one major surface of the glass plate, in which the resin layer is made of a resin containing metal oxide fine particles dispersed, and an absolute value of a refractive index difference between the glass plate and the resin layer is 0.07 or smaller over an entire range of a wavelength of 430 nm to 700 nm.

Abstract: The present invention relates to a chemically strengthened glass having a sheet shape, having a compressive stress layer on a glass surface, having a compressive stress value on the glass surface of 800 MPa or more, having a sheet thickness (t) of 100 ?m or more, having a depth of the compressive stress layer (DOL) of (t×0.1) ?m or more, and satisfying: CSB>CSA>0, where DB is a depth in a range of 10 ?m or more and not more than DOL from the glass surface, at which a compressive stress value is maximum; CSB is the compressive stress value at the depth DB; D? is a depth in a range of equal to or less than DB from the glass surface, at which a compressive stress value is minimum; and CSA is the compressive stress value at the depth DA.

Abstract: The present invention relates to an optical filter containing: an absorption layer containing a near-infrared absorbing dye (A) having a maximum absorption wavelength in dichloromethane being in a wavelength range of 850 to 1,100 nm and a transparent resin; and a reflection layer formed of a dielectric multilayer film, in which the near-infrared absorbing dye (A) satisfies the following Formulae (1) to (4). ABS400(A)DCM/ABS?max(A)DCM<0.10??(1), ABS550(A)DCM/ABS?max(A)DCM<0.04??(2), ABS400(A)TR/ABS?max(A)TR<0.15??(3), and ABS550(A)TR/ABS?max(A)TR<0.10??(4).