摘要:
Disc playback apparatus is provided with a rotatable carousel carrying a plurality of discs. The carousel is stopped so that a disc to be selected arrives at a predetermined position where it is removed and transferred to the playback apparatus and vice-versa. The carousel has a disc-shaped base and a plurality of disc clampers located on the base in a radial direction. Each of the clampers are formed of a disc support and a clamper member supported by a bearing provided on said disc support and have a convex portion adapted to engage with the bore of said disc. A spring member biases the convex portion of the clamper member so that the disc is held against the disc support and is selectively disengageable against the bias of said spring member so that it may be released from said carousel for transfer to said disc playback apparatus by said transfer means.
摘要:
A liquid immersion exposure apparatus includes a projection optical system (PL) which projects an image of a pattern onto a substrate (W) and a unit (5) which supplies a liquid (7) between an optical element (4) at the end of the projection optical system (PL) and the substrate (W). A corrosion-resistant film composed of an oxide is formed on the surface of the optical element (4) to prevent corrosion by the liquid (7). Consequently, a desired performance of the projection optical system can be secured for a long time even where a full field exposure in the step-and-repeat manner or a scanning exposure in the step-and-scan manner is performed in a liquid-immersion state.
摘要:
A mirror for, e.g, an excimer laser is disclosed having high reflectance for a broad band of wavelengths in the ultraviolet range exhibiting excellent adhesion and "laser durability." The mirror comprises a substrate formed from glass or a glass-like material, a dielectric film, and a metallic film, such as aluminum foil, positioned between the dielectric film and the substrate. The dielectric film includes alternating layers of high- and low-refractive index material. These alternating layers reduce the amount of incident light reaching the metallic film so that any damage to the metallic film caused by light is reduced, thereby increasing the laser durability of the mirror. The laser durability is also increased because the durability of the laminated dielectric film is generally superior to that of the metallic film used in prior-art metallic reflector mirrors.
摘要:
A variable reluctance rotation sensor comprises a rotatable magnetic toothed wheel adjacent a fixed magnetic pickup assembly. The pickup assembly comprises a pair of permanent magnets, each with a similar pole adjacent the wheel and separated circumferentially by the arc between a tooth and a non-adjacent slot. A magnetic flux member with a coil joins the other poles of the magnets in series opposed relationship and extends in close proximity to the tooth wheel to establish separate flux loops for each magnet distributed along the coil. The flux loops are spatially determined by the teeth and slots between the permanent magnets, so that they fluctuate circumferentially and generate an electrical signal in the coil with wheel rotation by variation of the flux linkages to individual turns of the coil. The sensor thus uses spatial flux changes to produce a rotation signal at very low rotational speeds with a larger air gap than that of conventional sensors.
摘要:
Provided are a plant capable of bearing seedless fruits stably over several generations, a seedless fruit generated from this plant, a method of producing a variety capable of readily and reliably bearing seedless fruits, a variety produced by this production method, and a seedless fruit generated from the thus produced variety. Particularly provided is a plant capable of bearing seedless fruits, wherein the plant is obtained by a crossing method comprising a step (a) of selecting a first filial generation plant which is capable of bearing seedless fruits as well as having a male sterile trait and a parthenocarpic trait from the group of first filial generation plants generated by crossing between a plant of a male sterile line and a plant of a parthenocarpic line, and a step (b) of crossing the thus selected first filial generation plant with a plant of a fixed line which is capable of sustaining the parthenocarpic trait and the male sterile trait of the plant, as a pollen parent, to thereby generate a progeny plant having the parthenocarpic trait and the male sterile trait.
摘要:
An optical element is used for an exposure apparatus which is configured to illuminate a mask with an exposure light beam for transferring a pattern on the mask onto a substrate through a projection optical system and to interpose a given liquid in a space between a surface of the substrate and the projection optical system. The optical element includes a first anti-dissolution member provided on a surface of a transmissive optical element on the substrate's side of the projection optical system.
摘要:
Provided are a plant capable of bearing seedless fruits stably over several generations, a seedless fruit generated from this plant, a method of producing a variety capable of readily and reliably bearing seedless fruits, a variety produced by this production method, and a seedless fruit generated from the thus produced variety. Particularly provided is a plant capable of bearing seedless fruits, wherein the plant is obtained by a crossing method comprising a step (a) of selecting a first filial generation plant which is capable of bearing seedless fruits as well as having a male sterile trait and a parthenocarpic trait from the group of first filial generation plants generated by crossing between a plant of a male sterile line and a plant of a parthenocarpic line, and a step (b) of crossing the thus selected first filial generation plant with a plant of a fixed line which is capable of sustaining the parthenocarpic trait and the male sterile trait of the plant, as a pollen parent, to thereby generate a progeny plant having the parthenocarpic trait and the male sterile trait.
摘要:
An optical element is used for an exposure apparatus which is configured to illuminate a mask with an exposure light beam for transferring a pattern on the mask onto a substrate through a projection optical system and to interpose a given liquid in a space between a surface of the substrate and the projection optical system. The optical element includes a first anti-dissolution member provided on a surface of a transmissive optical element on the substrate's side of the projection optical system.
摘要:
In an ultrasonic diagnostic apparatus, ultrasonic pulse beams are transmitted into an organism, ultrasonic waves reflected within the organism are received to obtain received signals, and an image is displayed in accordance with the received signals thus obtained. The ultrasonic diagnostic apparatus has a blood flow velocity arithmetic unit for extracting a Doppler transition component of the reflected ultrasonic waves in accordance with the received signals to evaluate a distribution of a velocity of a blood flow within the organism in accordance with the extracted Doppler transition component; a blood flow power arithmetic unit for extracting a Doppler transition component of the reflected ultrasonic waves in accordance with the received signals to evaluate a distribution of a power of a blood flow within the organism in accordance with the extracted Doppler transition component; and an image display unit for simultaneously displaying on a display screen a first image representative of a blood flow velocity distribution evaluated by said blood flow velocity arithmetic unit, and a second image representative of a blood flow power distribution evaluated by said blood flow power arithmetic unit.
摘要:
A means is provided for improving the magnetic permeability of a magnetic circuit within a variable reluctance sensor having off-set, permanent magnets by appropriately annealing the magnetic flux member. The annealing process includes heating the machined magnetic flux member in a vacuum to a temperature and for a duration sufficient to austenitize the magnetic steel so that full carbide solution is obtained, for example about 1300.degree. F. to about 1550.degree. F. for a duration of about 15 to 30 minutes. The magnetic flux member is then appropriately cooled in the vacuum so as to prevent the formation of martensite. The magnetic circuit, incorporating the annealed magnetic flux member, exhibited improved magnetic permeability, and the sensor signal was increased by as much as about 60 percent during operation. The method of this invention enhances the overall effectiveness of the sensor, particularly when sensing low rotational speeds such as when employed within automotive anti-lock braking or traction control systems.