Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that apart of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.

Abstract: In a refrigerant cycle apparatus which is operated at a supercritical pressure on a high-pressure side, for a purpose of maintaining or enhancing performances or reducing generation of clogging or a dimension of a capillary tube, a compressor has a first compression element, and a second compression element which compresses a refrigerant compressed by the first compression element, a gas phase refrigerant in an intermediate pressure receiver is sucked into the second compression element of the compressor, a liquid phase refrigerant in the intermediate pressure receiver is pressure reduced in a second pressure reducing device, and introduced into an evaporator, and the first pressure reducing device comprises a capillary tube on an upstream side of the refrigerant, and throttling means on a downstream side of the capillary tube.

Abstract: An optical pickup includes a laser light source configured to emit laser light, an objective lens configured to focus the laser light emitted from the laser light onto an optical disk, and an image-formation magnification rate varying section for varying an image-formation magnification rate at which the laser light is focused on the optical disk.

Abstract: A refrigerating machine is equipped with a compressor 1, a radiator 2, a pressure-reducing device 3, a gas-liquid separator 4, a unit for introducing the gas refrigerant separated in gas-liquid separator 4 into an intermediate pressure portion of the compressor, and a low pressure side circuit 9 in which liquid refrigerant separated in the gas-liquid separator is circulated. The low pressure side circuit 9 is provided with a heat absorbing unit 10 which selectively functions in different temperature zones. When the heat absorbing unit 10 is made to function in a high temperature zone, the gas refrigerant separated in the gas-liquid separator 4 is inhibited from being introduced into the intermediate pressure portion of the compressor 1 is inhibited, or allowed to be introduced into another intermediate pressure portion which is lower in pressure than the intermediate pressure portion.

Abstract: A refrigerating machine comprising a compressor, a radiator, a pressure-reducing device, a gas-liquid separator, plural heat absorbers functioning selectively in different temperature zones, a unit for allowing introduction of gas refrigerant separated in the gas-liquid separator into an intermediate pressure portion of the compressor, and a low pressure side circuit in which liquid refrigerant separated in the gas-liquid separator is circulated, wherein the low pressure side circuit is provided with at least a heat absorber functioning in a low temperature zone.

Abstract: A refrigerating machine having a compressor, a radiator, a pressure-reducing device, a gas-liquid separator, a unit for selectively introducing gas refrigerant separated in the gas-liquid separator into an intermediate pressure portion of the compressor, and a low pressure side circuit in which liquid refrigerant separated in the gas-liquid separator is circulated. The low pressure side circuit is provided with a heat absorbing unit functioning selectively in one of different temperature zones, and refrigerant passing through the selected heat absorbing unit is returned to a suction portion of the compressor.

Abstract: The present invention provides an optical component retaining device which includes an eyepiece lens 15 having a pair of rib portions 15b and 15c and a housing 16 having a slit portion 28 made of a tapered groove where the pair of rib portions are inserted and retains the eyepiece lens in the housing by holding the pair of rib portions in the slit portion. First to third planar surfaces 31b through 33b to be reference surfaces are arranged at three locations on one side surface of the pair of rib portions 15b and 15c in the light axis direction of the eyepiece lens 15 and convex portions 34 and 35 to be pressing portions are arranged at a plurality of locations on the other side surface of the pair of rib portions in the light axis direction.

Abstract: A lens barrel and imaging device advantageous for making unnatural brightness variation in an image, due to a liquid-crystal light control element, less noticeable, while reducing the size of an optical system, are disclosed. A lens barrel comprises an optical system, a rectangular planar liquid-crystal light control element, and an imaging element. An object image captured by the optical system is guided to the imaging element through the control element comprising a liquid crystal layer sealed in between a pair of alignment layers and containing rod-shaped liquid crystal molecules. A sensor unit of the imaging element has a rectangular imaging area. Light rays guided from the optical system to the imaging element diverge away from an optical axis. An orientational direction of the control element is substantially parallel to the shorter sides of the imaging area.

Abstract: The present invention relates to an optical pickup and an optical disc drive that records or reproduces data signals on or from optical discs different in specifications, such as recording density and thickness. One objective lens (17) is used for optical discs (22a, 22b) of two types that differ in specifications. The optical pickup and the optical disc drive comprise two light source sections (24a, 24b) and a lens-supporting mechanism (15). The light source sections emit two laser beams of different wavelengths, respectively. The lens-supporting mechanism (15) controls the position of the objective lens (17) in the radial direction of the discs and along the optical axis.

Abstract: A document processing system which can form, for example, an electronic document that is encrypted, having: setting means for setting access permission attributes for restricting a predetermined function request and ID information per function into the electronic document; storing means for storing the electronic document in which the access permission attributes are set so that the electronic document can be updated; an access information management table for managing the access permission attributes of each electronic document and the ID information which are set into the electronic document by the setting means; and electronic document managing means for updating the access permission attributes and the ID information set in the electronic document in response to a change request for the access permission attributes and the ID information after the electronic document was registered into the storing means and updating contents in the access information management table on the basis of the changed access pe

Abstract: There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion.

Abstract: There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion.

Abstract: There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion.

Abstract: There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion.

Abstract: Refrigerant compressed by a first stage compression elements (30) run by a motor (20) is discharged in the closed container (10) via a silencer chamber (35) to cool the motor (20) before the refrigerant is led to a second stage compression element (40). The refrigerant is discharged from the second stage compression element (40) out of the compressor after it is further compressed in the second compression element (40). Thus, the motor (20) is cooled in a simple cooling mechanism during normal operation of the compressor.

Abstract: The disclosed invention relates to an optical integrated device, an optical pickup, and an optical disk apparatus, and is applicable to an optical disk apparatus for playing back a compact disk (CD) and a DVD (Digital Video Disk), thereby to access a plurality of types of optical disks with a simple arrangement. For dividing feedback light with a hologram 19A and detecting the divided feedback light with a light-detecting element 20, laser sources 15A, 15B having different wavelengths are spaced a predetermined distance D from each other in order to compensate for the difference between the diffraction angles &thgr;A1, &thgr;B of the hologram 19A.

Abstract: When an input address AD is previously stored in a register 211, if a matching signal EQ1 is active, then an address queue control circuit 19A latches an offset of the input address AD into a register 241, or else, latches the input address AD into a register 212 through a selector 262. When the input address AD is previously stored in the register 241, the address queue control circuit 19A latches the input address AD into the register 212 through the selector 262. After reading the contents of the register 211, the address queue control circuit 19A shifts the offset OFS of the register 241 to the offset field of the register 211 through a selector 261, and resets a valid flag EF of the register 241.

Abstract: There is provided a method of working a plain bearing and a working apparatus of the plain bearing, which make it easy to perform working by forming a plurality of inclined surfaces of different angles in portions on both sides of the inner peripheral surface of the bearing alloy metal of the plain bearing in the axial direction thereof. In the working method and apparatus, a working holder 18 is provided which has a groove 20 extending on the inner peripheral surface in the peripheral direction and portions on both sides of the groove in the transverse direction formed in step-like shape, a half bearing 11 is housed in the working holder 18, and both ends of the half bearing 11 in the peripheral direction are pressed by use of pressing means 24. Then, the half bearing undergoes plastic deformation so as to be fitted into the groove and both sides of the half bearing in the axial direction thereof come into abutment with the edges 22, 23 of the step-like portions and are deformed in a polygonal line form.

Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that a part of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.

Abstract: There is disclosed a plain bearing comprising: a back metal; and a bearing alloy layer bonded onto the back metal which bearing alloy layer is provided at a surface side thereof with a cylindrical bearing face extended in the direction of the axis of the plain bearing, the bearing alloy face being provided at each of axial terminal portions thereof with an inclination face inclined radially outwardly from a location defined between both of axially terminal ends of said bearing face toward said axially terminal ends thereof, the inclination face having an axial length varying along the circumference of the inclination face.