Abstract: Glass (1) for vehicles includes a light blocking region (A2) in which a far-infrared ray transmission region (B) provided with an opening and a far-infrared ray transmission member arranged in the opening, and a visible light transmission region (C) transmitting visible light are formed. The opening is formed between an upper edge part (1a) of the glass (1) and a first position (P1) in a first direction from the upper edge part (1a) toward a lower edge part (1b) of the glass (1), the first position (P1) is a position at which a distance from the upper edge part (1a) is 30% of a length from the upper edge part (1a) to the lower edge part (1b), and between a second position (P2) and a third position (P3) in a second direction from a side edge part (1c) toward a side edge part (1d) of the glass (1) for vehicles.

Abstract: The present invention aims to provide a vehicular exterior member that is excellent in strength and cost, and sufficiently ensures a viewing field of sharpness of a thermal image obtained by a far-infrared camera. A vehicular exterior member that includes a light blocking region and is configured to be attached to a vehicle equipped with a far-infrared camera. The vehicular exterior member further includes, in the light blocking region, a far-infrared ray transmitting region having an opening and a far-infrared ray transmitting member disposed in the opening. An average transmittance of far-infrared rays having a wavelength ranging from 8 to 13 ?m of the far-infrared ray transmitting member is equal to or larger than 25%. A length of the longest straight line in straight lines connecting any desired two points on a surface on a vehicle exterior side of the far-infrared ray transmitting member is equal to or smaller than 80 mm.

Abstract: An optical glass has a refractive index (nd) of 1.55 or more. A difference (Tf?Tg) between a fictive temperature (Tf) and a glass transition temperature (Tg) of the optical glass is 0° C. or more. The optical glass may have a crack initiation load L of 350 mN or more.

Abstract: The present invention aims to provide a vehicular exterior member that is excellent in strength and cost, and sufficiently ensures a viewing field of sharpness of a thermal image obtained by a far-infrared camera. A vehicular exterior member that includes a light blocking region and is configured to be attached to a vehicle equipped with a far-infrared camera. The vehicular exterior member further includes, in the light blocking region, a far-infrared ray transmitting region having an opening and a far-infrared ray transmitting member disposed in the opening. An average transmittance of far-infrared rays having a wavelength ranging from 8 to 13 ?m of the far-infrared ray transmitting member is equal to or larger than 25%. A length of the longest straight line in straight lines connecting any desired two points on a surface on a vehicle exterior side of the far-infrared ray transmitting member is equal to or smaller than 80 mm.

Abstract: An optical member includes a transparent substrate containing at least one substance selected from glass, a glass ceramic, silicon, and sapphire, and having an infrared high-transmittance region in which an optical transmittance is 78% or more in a wavelength band of 700 nm to 1800 nm; and an optical interference film disposed on a main surface of the transparent substrate corresponding to the infrared high-transmittance region, wherein a transmittance of light, of the optical member, of at least one wavelength ?3 in the wavelength band of 700 nm to 1800 nm in a region of the optical member corresponding to the infrared high-transmittance region of the transparent substrate has a minimum value of 86.5% or more and has a difference between the minimum value and a maximum value of 9% or less in a range where an incidence angle is from 0 degrees to 60 degrees.

Abstract: The present invention relates to an optical glass having refractive index of 1.55 or more and having chromaticity b* that satisfies b*?4.8 under A light source in a CIELab representation. The present invention also relates to an optical glass having refractive index of 1.55 or more, having a ratio (b*/|a*|) of chromaticity b* to an absolute value of chromaticity a* that satisfies b*|a*|?0.55 under A light source in a CIELab representation, and satisfying b*?0.1.

Abstract: The present invention relates to an optical glass having refractive index of 1.55 or more and having chromaticity b* that satisfies b*?4.8 under A light source in a CIELab representation. The present invention also relates to an optical glass having refractive index of 1.55 or more, having a ratio (b*/|a*|) of chromaticity b* to an absolute value of chromaticity a* that satisfies b*/|a*|?0.55 under A light source in a CIELab representation, and satisfying b*?0.1.

Abstract: A decrease in the detection accuracy of infrared rays is suppressed. Vehicle glass includes a light shielding region in which a far-infrared ray transmitting region is formed, the far-infrared ray transmitting region including an opening and a far-infrared ray transmitting member (20) disposed in the opening. In the far-infrared ray transmitting member (20), the average transmittance of far-infrared rays having wavelengths of 8 ?m to 13 ?m at a first position (P1) in a case where the far-infrared rays are emitted in a direction perpendicular to a surface (20a) on a vehicle exterior side is different from the average transmittance of the far-infrared rays having wavelengths of 8 ?m to 13 ?m at a second position (P2) that is lower than the first position (P1) in the vertical direction in a case where the vehicle glass is mounted to a vehicle.

Abstract: A colliding object is suppressed from reaching a driver’s seat, and an occupant and an object in a vehicle compartment are suppressed from being thrown out of a vehicle. In a vehicle glass 1, a far-infrared transmitting region in which an opening portion and a far-infrared transmissive member 20 arranged in the opening portion are provided is formed in a light shielding region. The vehicle glass 1 includes a protective member 40 that is provided on a vehicle interior side of the far-infrared transmissive member 20 and overlaps with at least a part of the far-infrared transmissive member 20 when viewed from a direction orthogonal to a vehicle exterior side surface 20a of the far-infrared transmissive member 20.

Abstract: To appropriately transmit far-infrared rays while ensuring design. A far-infrared ray transmission member (20) includes a base material (30) configured to transmit far-infrared rays, and a functional film (31) formed on the base material (30). Dispersion of reflectances with respect to pieces of light at a wavelength of 360 nm to 830 nm in increments of 1 nm is equal to or smaller than 30, a reflectance with respect to visible light defined by JIS R3106 is equal to or lower than 25%, and an average transmittance with respect to light at a wavelength of 8 ?m to 12 ?m is equal to or higher than 50%.

Abstract: An optical glass has a refractive index (nd) of 1.64 or more. A P value represented by the following formula (1) is in a range of 7.0<P value<10.0: P value=log(A450×P450+A550×P550+A650×P650+A750×P750) (1). A450, A550, A650 and A750 are absorbances of the optical glass with a plate thickness of 10 mm at a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively. P450, P550, P650 and P750 are radiances of light having a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively, at 1,300° C. according to Planck's radiation law. All of internal transmittances in terms of a 10-mm thickness at wavelengths of 450 nm, 550 nm, 650 nm and 750 nm are 91% or more.

Abstract: To suppress deterioration in a wiping property of wipers and increase in a load on the wipers. In glass for vehicles (1) including a light blocking region, a far-infrared ray transmission region is formed in the light blocking region, the far-infrared ray transmission region being provided with an opening (19) and a far-infrared ray transmission member (20) disposed in the opening (19), and the glass for vehicles (1) and the far-infrared ray transmission member (20) are bonded to each other with a frame member (30) interposed therebetween. Regarding the frame member (30), where a length of the longest straight line among straight lines each connecting optional two points on an inner circumference on a side facing the opening (19) in a surface on a vehicle exterior side is D, and a thickness of a portion projecting from a surface on the vehicle exterior side of the glass for vehicles (1) is t, D2/t is larger than 1250, and t is equal to or smaller than 2.5 mm.

Abstract: An optical glass has a refractive index (nd) of 1.64 or more. A P value represented by the following formula (1) is in a range of 7.0<P value<10.0: P value=log(A450×P450+A550×P550+A650×P650+A750×P750) (1). A450, A550, A650 and A750 are absorbances of the optical glass with a plate thickness of 10 mm at a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively. P450, P550, P650 and P750 are radiances of light having a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively, at 1,300° C. according to Planck's radiation law. All of internal transmittances in terms of a 10-mm thickness at wavelengths of 450 nm, 550 nm, 650 nm and 750 nm are 91% or more.

Abstract: Glass (1) for vehicles includes a light blocking region (A2) in which a far-infrared ray transmission region (B) provided with an opening and a far-infrared ray transmission member arranged in the opening, and a visible light transmission region (C) transmitting visible light are formed. The opening is formed between an upper edge part (1a) of the glass (1) and a first position (P1) in a first direction from the upper edge part (1a) toward a lower edge part (1b) of the glass (1), the first position (P1) is a position at which a distance from the upper edge part (1a) is 30% of a length from the upper edge part (1a) to the lower edge part (1b), and between a second position (P2) and a third position (P3) in a second direction from a side edge part (1c) toward a side edge part (1d) of the glass (1) for vehicles.

Abstract: The present invention aims to provide a vehicular exterior member that is excellent in strength and cost, and sufficiently ensures a viewing field of sharpness of a thermal image obtained by a far-infrared camera. A vehicular exterior member that includes a light blocking region and is configured to be attached to a vehicle equipped with a far-infrared camera. The vehicular exterior member further includes, in the light blocking region, a far-infrared ray transmitting region having an opening and a far-infrared ray transmitting member disposed in the opening. An average transmittance of far-infrared rays having a wavelength ranging from 8 to 13 ?m of the far-infrared ray transmitting member is equal to or larger than 25%. A length of the longest straight line in straight lines connecting any desired two points on a surface on a vehicle exterior side of the far-infrared ray transmitting member is equal to or smaller than 80 mm.

Abstract: An optical member includes a transparent substrate containing at least one substance selected from glass, a glass ceramic, silicon, and sapphire, and having an infrared high-transmittance region in which an optical transmittance is 78% or more in a wavelength band of 700 nm to 1800 nm; and an optical interference film disposed on a main surface of the transparent substrate corresponding to the infrared high-transmittance region, wherein a transmittance of light, of the optical member, of at least one wavelength ?3 in the wavelength band of 700 nm to 1800 nm in a region of the optical member corresponding to the infrared high-transmittance region of the transparent substrate has a minimum value of 86.5% or more and has a difference between the minimum value and a maximum value of 9% or less in a range where an incidence angle is from 0 degrees to 60 degrees.

Abstract: To provide optical glass having high refractive index and low density and having favorable production properties. An optical glass having refractive index (nd) of from 1.71 to 2.00, density of at most 5.0 g/cm3, a temperature at which the viscosity of the glass is log ?=2 of from 750 to 1,200° C. and devitrification temperature of at most 1,300° C., and containing from 0% to 21.5% of TiO2 as represented by mol % based on oxides. The optical glass has high refractive index and low density, has favorable production properties, and is suitable as an optical member for wearable devices, for vehicles, for robots, etc.

Abstract: The present invention relates to an optical glass having refractive index of 1.55 or more and having chromaticity b* that satisfies b*?4.8 under A light source in a CIELab representation. The present invention also relates to an optical glass having refractive index of 1.55 or more, having a ratio (b*/|a*|) of chromaticity b* to an absolute value of chromaticity a* that satisfies b*/|a*|?0.55 under A light source in a CIELab representation, and satisfying b*?0.1.

Abstract: An optical glass has a refractive index (nd) of 1.55 or more. A difference (Tf?Tg) between a fictive temperature (Tf) and a glass transition temperature (Tg) of the optical glass is 0° C. or more. The optical glass may have a crack initiation load L of 350 mN or more.

Abstract: An optical glass has a refractive index (nd) of 1.64 or more. A P value represented by the following formula (1) is in a range of 7.0<P value<10.0: P value=log(A450×P450+A550×P550+A650×P650+A750×P750) (1) A450, A550, A650 and A750 are absorbances of the optical glass with a plate thickness of 10 mm at a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively. P450, P550, P650 and P750 are radiances of light having a wavelength of 450 nm, 550 nm, 650 nm and 750 nm, respectively, at 1,300° C. according to Planck's radiation law. All of internal transmittances in terms of a 10-mm thickness at wavelengths of 450 nm, 550 nm, 650 nm and 750 nm are 91% or more.