摘要:
An optical disc recording/reproducing apparatus capable of performing the operation of recording, reproducing, or recording and reproducing a plurality channel of signals efficiently and in a short time, by controlling memories. The apparatus has a compressor for compressing an input signal supplied via an A/D converter, a first memory for storing the compressed signal, a disc recording unit having a modulator for modulating the compressed signal and a head block for recording the modulated signal on an optical disc, a disc reproducing unit having a demodulator for demodulating the compressed signal read from the optical disc by the head block, a second memory for storing the demodulated signal, an expander for expanding the demodulated signal read from the second memory, and a D/A converter for converting the read signal.
摘要:
An articulated robot having a swivel base supported on a support base for swivel movement about a vertical axis, a first arm pivoted on the swivel base for swing movement about a first swing axis perpendicular to the vertical axis and a second arm pivoted on the forward end of the first arm for swing movement about a second swing axis parallel to the first swing axis, wherein a servomotor for moving the second arm is mounted on the swivel base. The robot is provided with a gear train transmitting the rotation of the servomotor to the second arm, and the gear train is composed of a drive gear rotated by the servomotor to be rotated about the first swing axis, a driven gear fixed to the second arm for rotational movement about the second swing axis together with the second arm, and three idler gears disposed between the drive gear and driven gear for transmitting the rotation of the drive gear to the driven gear. The robot is also provided with a backlash eliminating mechanism for eliminating backlashes between those gears.
摘要:
An aqueous resin emulsion is disclosed. The emulsion is obtained by emulsion copolymerizing a monomer mixture comprising (a) an acrylic acid fluoroalkyl ester derivative, (b) an acrylic acid derivative, and (c) a polyfunctional monomer for internal cross-linking, in an aqueous medium. The emulsion shows excellent polymerization stability in emulsion copolymerization for the preparation thereof and excellent dispersion stability in an aqueous medium.
摘要:
In a drive force transmission apparatus, when an input shaft is rotated in a normal rotational direction, a rotational force of the input shaft is transmitted to an output shaft through a one-way clutch to rotate the output shaft at a rotational speed, which is the same as a rotational speed of the input shaft. At this time, an input side sub-shaft is freed from an output side sub-shaft. In contrast, when the input shaft is rotated in a reverse rotational direction, the rotational force of the input shaft is transmitted to the output shaft through an input gear, a first gear, the input side sub-shaft, a two-way clutch, the output side sub-shaft, a second gear and an output gear. At this time, the output shaft is freed from an intermediate shaft.
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:
Phosphor that can provide white LED that uses a blue LED or an ultraviolet LED as a light source and that has superior luminous efficiency. This phosphor includes, as a main component, α-type sialon represented by a general expression: (M1)x(M2)y(Si,Al)12(O,N)16 (where M1 is one or more types of elements selected from a group consisting of Li, Mg, Ca, Y, and lanthanide element (except for La and Ce) and M2 is one or more types of elements selected from a group consisting of Ce, Pr, Eu, Tb, Yb, and Er, and 0.3≦X+Y≦1.5 and 0
摘要翻译:可以提供使用蓝色LED或紫外线LED作为光源并具有优异发光效率的白色LED的荧光体。 该荧光体作为主要成分,以通式(M1)x(M2)y(Si,Al)12(O,N)16表示的α型赛隆)(其中M1为选择的一种或多种元素 来自由Li,Mg,Ca,Y和镧系元素(La和Ce除外)组成的组,M2是选自Ce,Pr,Eu,Tb,Yb和Er中的一种或多种元素 ,和0.3& NlE; X + Y≦̸ 1.5和0
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.