Abstract: In a cover device for a near-infrared sensor, a plate-shaped cover is arranged in a vehicle such that near-infrared light transmitted from a near-infrared sensor passes through the cover in the thickness direction. A part of the cover in the thickness direction is constituted by a bright decorative layer, which reflects part of incident visible light and allows near-infrared light to pass through. The cover is configured such that the near-infrared light transmittance is higher than the visible light transmittance. The vehicle further includes a light emitting portion, which emits visible light to the cover.

Abstract: A silver mirror film includes a plurality of silver particles arranged in a film surface direction, a plurality of interparticle silicon particles between the silver particles, and a plurality of surface silicon particles on surfaces of the silver particles so as to at least partially cover the surfaces. The interparticle silicon particles and the surface silicon particles are present as (SixO2y)n{x?1, y?1, and n?1}.

Abstract: In a cover device for a near-infrared sensor, a plate-shaped cover is arranged in a vehicle such that near-infrared light transmitted from a near-infrared sensor passes through the cover in the thickness direction. A part of the cover in the thickness direction is constituted by a bright decorative layer, which reflects part of incident visible light and allows near-infrared light to pass through. The cover is configured such that the near-infrared light transmittance is higher than the visible light transmittance. The vehicle further includes a light emitting portion, which emits visible light to the cover.

Abstract: A decorative product includes a decorative layer containing nickel, chromium, and molybdenum as constituent components. The molybdenum content in the decorative layer is 50 atm % or less. The total content of nickel, chromium, and molybdenum in the decorative layer is 95 atm % or more.

Abstract: A silver mirror film includes a plurality of silver particles arranged in a film surface direction, a plurality of interparticle silicon particles between the silver particles, and a plurality of surface silicon particles on surfaces of the silver particles so as to at least partially cover the surfaces. The interparticle silicon particles and the surface silicon particles are present as (SixO2y)n{x?1, y?1, and n?1}.

Abstract: A decorative product includes a transparent member formed from an acrylic resin and a decorative layer arranged on a rear surface of the transparent member. A processed layer is located between the transparent member and the decorative layer. The processed layer is formed by performing a plasma treatment on the rear surface of the transparent member. The decorative layer is a metal layer formed on the processed layer formed by performing sputtering. The processed layer has the thickness L of less than or equal to 260 nm.

Abstract: A decorative product includes a transparent member formed from an acrylic resin and a decorative layer arranged on a rear surface of the transparent member. A processed layer is located between the transparent member and the decorative layer. The processed layer is formed by performing a plasma treatment on the rear surface of the transparent member. The decorative layer is a metal layer formed on the processed layer formed by performing sputtering. The processed layer has the thickness L of less than or equal to 260 nm.

Abstract: A resonator is arranged in an intake system including a pipe section for partitioning an intake port from an intake passage that communicates the intake port with a combustion chamber of an engine, the resonator including: a branch pipe having one end branching to the pipe section and the other end closed so that a silencing chamber is defined therein; and at least one partition wall for partitioning the silencing chamber into at least one pneumatic spring chamber, the partition wall having a natural frequency lower than the frequency of silencing target sound of intake noise propagated from the intake passage.

Abstract: An air conditioner duct connected to a downstream side of an air flow path of a vehicular air conditioning apparatus is provided with an outer pipe portion and an inner pipe portion formed at an inner portion of the outer pipe portion, a first inner end of the inner pipe portion is integrated to an inner peripheral face of the outer pipe portion, an outer peripheral face of a second inner end of the inner pipe portion and an inner peripheral face of the outer pipe portion are separated, a side branch type noise suppressing chamber is defined by the inner peripheral face of the outer pipe portion and the outer peripheral face of the inner pipe portion, and the outer pipe portion is provided with an adjusting portion continuous to an upstream side of an air flow path of the first inner end.

Abstract: A resonator is arranged in an intake system including a pipe section for partitioning an intake port from an intake passage that communicates the intake port with a combustion chamber of an engine, the resonator including: a branch pipe having one end branching to the pipe section and the other end closed so that a silencing chamber is defined therein; and at least one partition wall for partitioning the silencing chamber into at least one pneumatic spring chamber, the partition wall having a natural frequency lower than the frequency of silencing target sound of intake noise propagated from the intake passage.