Abstract: An optical filter includes: a resin substrate including a resin (P) which has a glass transition temperature of 200° C. or higher and which has specific transmittance properties; an external resin layer; and dielectric multilayer films. In a case where the external resin layer includes the polyimide resin, the optical filter includes an intermediate resin layer including a cycloolefin resin. At least one of the dielectric multilayer films is a near-infrared reflection layer. At least one of the external resin layer and the intermediate resin layer contains a near-infrared absorbing dye (A). The near-infrared absorbing dye (A) has a maximum absorption wavelength within a wavelength range of 800 nm to 1,200 nm. The proportion of a total thickness of members including a resin having a glass transition temperature of 200° C. or higher to a total thickness of the resin-including members is 85% or higher.

Abstract: An optical filter includes: a resin substrate having a thickness of 20 ?m or more and 110 ?m or less; an absorption layer having a thickness of 0.25 ?m or more and 12 ?m or less and being disposed on at least one principal surface of the resin substrate; and dielectric multilayer films disposed as an outermost layer on both principal surfaces of the resin substrate. At least one of the dielectric multilayer films is a near-infrared reflection layer. The resin substrate includes a first transparent resin having a glass transition temperature of 170° C. or more and having specific optical properties. The absorption layer includes a near-infrared absorbing dye (A) and a second transparent resin having a glass transition temperature of 170° C. or more, and the near-infrared absorbing dye (A) satisfies specific optical properties in relation to the second transparent resin.

Abstract: A torque cam device for an automatic transmission including: a drive cam member; and a driven cam member, each of the first drive cam surface and the first driven cam surface including an entire annular circumference equally divided into at least two sections each having a helical curved surface according to a cam angle, and connection portions formed between the equally divided helical curved surfaces, and at least one of the helical curved surfaces of the first drive cam surface and the first driven cam surface having a guide groove which is continuous in an entire circumference, and which is arranged to guide a movement of the ball.

Abstract: An oil pump driving device drives an oil pump using at least one of rotation generated by an electric motor and rotation generated by an engine. The oil pump driving device includes: a first transmission unit to which the rotation generated by the electric motor is transmitted; a second transmission unit to which the rotation generated by the engine is transmitted; a third transmission unit configured to transmit rotation to the oil pump; and an engaging unit configured to cause the third transmission unit to engage with the first transmission unit, with the second transmission unit, or with the first and second transmission units.