摘要:
An image pickup lens includes, in order from an object side thereof: a first lens in a meniscus shape having a positive refractive power and including a convex surface facing the object side; a second lens having a negative refractive power and including a concave surface facing an image side of the image pickup lens; a third lens in a meniscus shape having a positive refractive power and including a convex surface facing the image side; and a fourth lens having a negative refractive power and including a concave surface facing the image side, where at least one surface of the fourth lens is in an aspheric shape. The image pickup lens satisfies a predetermined condition relating to a composite focal length of the first lens and the second lens, and a focal length of a total system of the image pickup lens.
摘要:
A high expansion ratio internal combustion engine includes: a variable compression ratio mechanism that varies a mechanical compression ratio of the internal combustion engine; and a variable valve train in which some valve(s) of a plurality of intake valves is phase-variable and the remaining valve(s) is phase-fixed, the variable valve train being configured such that a working angle of the phase-variable intake valve is larger than a working angle of the phase-fixed intake valve, wherein a valve-open timing of the phase-variable intake valve is retarded after a valve-open timing of the phase-fixed intake valve when the internal combustion engine is under low-load operating state.
摘要:
The present invention provides methods of forming multi-layered patterned coating films comprising the steps of (1) applying a first colored base coating composition to a substrate, (2) applying a second colored base coating composition over the uncured coating film of the first colored base coating composition in such a manner that the first colored base coating film is partially exposed, the second colored base coating composition being able to form a coating film of different color and/or visual texture from that of the first colored base coating composition, and having, 30 seconds after application, 30 to 60 mass % of the solids content of the base coating composition, and (3) applying a top clear coating composition over the cured or uncured first and second colored base coating compositions, and curing the uncured composition(s).
摘要:
To provide an acrylic rubber composition having an excellent heat resistance, especially an excellent balance between the residual ratio of the tensile strength and the residual ratio of the elongation after heat aging, when formed into a vulcanized product, and a hose article, a sealing article and a rubber vibration insulator using the acrylic rubber composition.An acrylic rubber composition containing an acrylic rubber obtainable by copolymerizing 100 parts by mass of an alkyl acrylate with from 10 to 100 parts by mass of an alkyl methacrylate and from 0.5 to 4 parts by mass of a crosslinkable monomer. Here, the alkyl methacrylate is preferably at least one compound selected from the group consisting of methyl methacrylate, ethyl methacrylate and n-butyl methacrylate, and the alkyl acrylate is preferably at least one compound selected from the group consisting of methyl acrylate, ethyl acrylate and n-butyl acrylate.
摘要:
A production method, comprising a step of synthesizing silicon particle-containing silicon oxide particles by performing a gas phase reaction of monosilane gas and oxidizing gas for oxidizing the monosilane gas and a step of removing the silicon oxide with hydrofluoric acid after holding the silicon oxide particle powder in an inert atmosphere at 800-1400° C., provides high-purity silicon nanoparticles which are highly practical as material powder for high-performance light-emitting elements and electronic parts in an industrial scale.
摘要:
An image pickup lens includes a first lens block with a positive refractive power, a second lens block with a negative refractive power, and an aperture stop. The first lens block includes a first lens substrate, and lens portions 1a and 1b arranged on the first lens substrate. The lens portions 1a and 1b are different from the first lens substrate in at least one of a refractive index and an Abbe number. The second lens block includes a second lens substrate, and lens portions 2a and 2b arranged on the second lens substrate. The lens portions 2a and 2b are different from the second lens substrate in at least one of a refractive index and an Abbe number. The image pickup lens satisfies predetermined conditions relating to a refractive index of the lens portion 2b, and composite thicknesses of the first lens block and the second lens block.
摘要:
An image pickup lens includes, in order from an object side thereof: a first lens in a meniscus shape having a positive refractive power and including a convex surface facing the object side; a second lens having a negative refractive power and including a concave surface facing an image side of the image pickup lens; a third lens in a meniscus shape having a positive refractive power and including a convex surface facing the image side; and a fourth lens having a negative refractive power and including a concave surface facing the image side, where at least one surface of the fourth lens is in an aspheric shape. The image pickup lens satisfies a predetermined condition relating to a composite focal length of the first lens and the second lens, and a focal length of a total system of the image pickup lens.
摘要:
After a delay control for extending a period from when an engine stop request is made to when the engine actually stops is started, the electronic control unit changes the valve timing and the valve duration of an intake valve to valve timing and valve duration suitable for starting the engine. When changing the valve timing and the valve duration after the start of the delay control, the electronic control unit changes one of the valve timing and the valve duration of the intake valve based on the other such a valve overlap becomes less than or equal to a predetermined value.
摘要:
A connecting device includes a first circuit board having a first conductive pattern on an outer peripheral edge portion thereof, a second circuit board having a second conductive pattern on an outer peripheral edge portion thereof, and a connector having a terminal corresponding to the first and second conductive patterns. The terminal connects the first conductive pattern and the second conductive pattern when the first and second circuit boards are attached to the connector. Also, a connecting device includes a first circuit board having a first conductive pattern on an edge portion thereof, a second circuit board having a second conductive pattern on an edge portion thereof, and a connector having a first and second faces, the first and second faces have a first and second recess portions respectively. A terminal connects the first and second conductive patterns when the first and second circuit boards are attached to the first and second recess portions respectively.