Abstract: A zoom lens system includes a negative first lens group, a diaphragm, a positive second lens group, and a positive third lens group, in this order from the object. Zooming is performed by moving the negative first lens group and the positive first lens group in the optical axis direction. The zoom lens system includes six lens elements divided into lens group as follows: a negative first lens element and a positive second lens element, in this order from the object, constitute the negative first lens group; a positive third lens element, a negative fourth lens element and a positive fifth lens element, all of which are bonded to each other, in this order from the object, constitute the positive second lens group; and a positive sixth lens element constitutes the positive third lens group.

Abstract: There are provided a water-lifting pump apparatus which is free of a discharge valve and a check valve, is low in cost, and is capable of reducing vibration and noise due to a waterfall after the end of water pumping operation, and a method of controlling operation of the water-lifting pump apparatus. The water-lifting pump apparatus has a suction tank (10), a discharge tank (20), a pump (30) for pumping water in the suction tank (10) into the discharge tank (20), and a discharge piping (50) connected to a discharge side of the pump, an actuating means (60) for actuating the pump (50), a reverse flow preventing mechanism (80) for preventing a reverse flow of water pumped into the discharge tank (20) toward the discharge piping (50), and a back flow rate control means (90) for controlling the flow rate of a waterfall falling from the discharge piping (50) into the suction tank (10) when pumping operation is finished.

Abstract: When manufacturing a vacuum enclosure of an image display unit, degassing is performed by baking a back-side substrate provided with a plurality of strip-like slender spacer in a standing state. In this time, radiant heat is applied to the upper side of the spacer, to prevent the radiant heat reaching the side of the spacer, and to prevent an increase in a temperature difference between the spacer and back-side substrate.

Abstract: After sealing layers are formed on peripheral edge parts of a front substrate and a rear substrate, the front substrate and the rear substrate are disposed to be opposed to each other. Current paths are formed in the sealing layers, and power supply is begun. An electric current, which reaches a maximum current value after a current-increasing period of 10% or more of an entire power-supply time, is supplied for a perdetermined time period. The sealing layers are heated and melted by the power supply, and peripheral parts of the front substrate and rear substrate are joined joined.

Abstract: A dry etching method involves plasma etching an organic anti-reflecting coating film through a mask layer made of photoresist and having a predetermined pattern by using an etching gas of CF4 and O2. The method allows an organic anti-reflecting coating film to be etched such that the etched film exhibits a side wall portion having a better shape as compared with that formed by a conventional technique.

Abstract: A zoom lens system includes a negative first lens group and a positive second lens group. The negative first lens group includes a negative lens element and a positive lens element. The positive second lens group includes a positive lens element, a negative lens element, and a positive lens element. At least the object-side positive lens element and the negative lens element are cemented together. The zoom lens system of the present invention satisfies the following conditions: 1.5<f2G/(fT/fW)<3.0??(1) 1<f2G(mW?mT)/(fT/fW)<3??(2) wherein f2G: the focal length of the positive second lens group; mW: the lateral magnification of the positive second lens group at the short focal length extremity; and mT: the lateral magnification of the positive second lens group at the long focal length extremity; fT: the focal length of the entire zoom lens system at the long focal length extremity; and fW: the focal length of the entire zoom lens system at the short focal length extremity.

Abstract: A zoom lens system includes ‘n’ (n?3) lens groups. A first lens group that is the most object-side lens group of said zoom lens system has a positive refractive power, and a final lens group that is the most image-side lens group of the zoom lens system has a negative refractive power. The distance from the most object-side surface of the positive first lens group to the most image-side surface of the negative final lens group becomes shortest at an intermediate focal length between the short focal length extremity and the long focal length extremity.

Abstract: The centrifugal impeller includes a plurality of blades (3), a plurality of fluid paths (P) for delivering a fluid from an impeller inlet (1) to an impeller outlet (2), and a shroud (4) and a hub (5) for forming the fluid paths (P). Each of the fluid paths (P) is formed between adjacent two of the blades (3). A curved line (L3) of the shroud (4) curves so as to project toward the hub (5) in a region from a blade inlet (A) to a predetermined position (C) of the blade (3), and the curved line (L3) curves so as to project toward the opposite side of the hub (5) in a region from the predetermined position (C) to a blade outlet (B).

Abstract: A slider is provided on a rear door so as to be able to freely reciprocated, and the slider is connected to a vehicle body through a control arm and a driven arm. A linear cam groove and a curved cam groove continuous to the linear cam groove are formed in a guide plate fixed to the rear door. A control arm that controls an operation of the rear door includes a proximal portion rotatably attached to the slider and a pair of arm portions continuous to the proximal portion. The longer arm portion is attached to the vehicle body whereas the shorter arm portion is guided by the cam grooves. A projection amount of the rear door can be thereby set larger than a curve amount of the curved cam groove. In addition, a width of the guide plate can be thereby reduced. Therefore, the guide plate can be attached not to the vehicle body but to the rear door.

Abstract: A first substrate and a second substrate located opposite each other with a gap therebetween are sealed at a predetermined position by a sealing portion and which seals the front and rear substrates in a given position and defines a sealed space between the front and rear substrates. The sealing portion has a ground layer formed on an inner surface of at least one of the first substrate and the second substrate, and a sealing layer made of an electrically conductive sealant and formed on the ground layer, the ground layer having a thickness of 5 to 22 ?m.

Abstract: A zoom lens system includes a negative first lens group, a diaphragm, a positive second lens group, and a positive third lens group, in this order from the object. Zooming is performed by moving the negative first lens group and the positive second lens group in the optical axis direction. The zoom lens system includes six lens elements; and the six lens elements are divided into the lens groups as follows: a negative first lens element and a positive second lens element, in this order from the object, are arranged to constitute the negative first lens group; a positive third lens element, a negative fourth lens element and a positive fifth lens element, all of which are bonded to each other, in this order from the object, are arranged to constitute the positive second lens group; and a positive sixth lens element is arranged to constitute the positive third lens group.

Abstract: A zoom lens system includes a negative first lens element, a positive second lens element and a positive third lens element, in this order from the object. Upon zooming from the short focal length extremity to the long focal length extremity, the positive second lens element and the positive third lens element move along the optical axis, while the negative first lens element remains stationary. Furthermore, the positive second lens element is directed to move from the image side toward the object side.

Abstract: The centrifugal impeller includes a plurality of blades (3), a plurality of fluid paths (P) for delivering a fluid from an impeller inlet (1) to an impeller outlet (2), and a shroud (4) and a hub (5) for forming the fluid paths (P). Each of the fluid paths (P) is formed between adjacent two of the blades (3). A curved line (L3) of the shroud (4) curves so as to project toward the hub (5) in a region from a blade inlet (A) to a predetermined position (C) of the blade (3), and the curved line (L3) curves so as to project toward the opposite side of the hub (5) in a region from the predetermined position (C) to a blade outlet (B).

Abstract: A camera system includes a lens unit and a camera body to which the lens unit is detachably attached. The lens unit has a photographing lens, an imaging device which receives light transmitted through the photographing lens, and a lens-side connecting terminal for electric connection. The camera body has a camera-side connecting terminal which is connectable to the lens-side connecting terminal, and a movable member which is movable between a first position that is close to the camera-side connecting terminal and a second position that is far from the camera-side connecting terminal. The camera-side connecting terminal is shut in the camera body when the movable member is in the first position, and the lens unit can be attached when the movable member is in the second position.

Abstract: A zoom lens system includes a negative first lens group and a positive second lens group. The negative first lens group includes a negative lens element and a positive lens element. The positive second lens group includes a positive lens element, a negative lens element, and a positive lens element. At least the object-side positive lens element and the negative lens element are cemented together. The zoom lens system of the present invention satisfies the following conditions: 1.5<f2G/(fT/fW)<3.0??(1) 1<f2G(mW?mT)/(fT/fW)<3??(2) wherein f2G: the focal length of the positive second lens group; mW: the lateral magnification of the positive second lens group at the short focal length extremity; and mT: the lateral magnification of the positive second lens group at the long focal length extremity; fT: the focal length of the entire zoom lens system at the long focal length extremity; and fW: the focal length of the entire zoom lens system at the short focal length extremity.

Abstract: A zoom lens system includes a negative first lens group, a diaphragm, and a positive second lens group, in this order from the object. Zooming is performed by moving the negative first lens group and the positive second lens group along an optical axis of the zoom lens system. The negative first lens group includes a negative first lens element, a negative second lens element, and a positive third lens element, in this order from the object. The zoom lens system satisfies the following condition: 0.7<ft/f2G<1.1??(1) wherein ft designates the focal length of the entire zoom lens system at the long focal length extremity; and f2G designates the focal length of the positive second lens group.

Abstract: A vacuum envelope of a flat display device comprises a front substrate and a rear substrate opposed to each other and a rectangular frame body provided between respective peripheral portions of the front substrate and the rear substrate. The frame body has projections that protrude outward from individual corner portions. In manufacture, the projections are nipped and pulled outward, and the frame body is positioned with respect to the substrates and joined thereto with a longitudinal tension applied to each side of the frame body.

Abstract: Structure of an automatic opening and closing system for a vehicle is simplified, thereby reducing the cost. A base end of an arm member is swingably connected to a back door. One end of a cable is fixed to the base end of the arm member, and the other end of the cable is fixed to a distal end of the arm member. A drum is provided in a close side of the base end of the arm member and open side of the distal end, and is fixed to an output shaft of a drive unit and driven to be rotated by an electric motor. Middle part of the cable is wound around the drum, and when the electric motor is actuated, the cable is reeled onto the drum so as to be actuated in the direction in which the base end or the distal end approaches the drum.

Abstract: A zoom lens system includes ‘n’ (n?3) lens groups. A first lens group that is the most object-side lens group of said zoom lens system has a positive refractive power, and a final lens group that is the most image-side lens group of the zoom lens system has a negative refractive power. The distance from the most object-side surface of the positive first lens group to the most image-side surface of the negative final lens group becomes shortest at an intermediate focal length between the short focal length extremity and the long focal length extremity.

Abstract: A textile having durability of maintaining water- and sufficient oil-repellency and soil releasability before and after cleaning can be obtained by a method of preparing a treated textile, having steps of: (1) preparing a treatment liquid containing a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, preferably at most 3, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent is an emulsion containing a fluorine-containing compound and an emulsifier, the fluorine-containing compound is a fluorine-containing polymer and/or a fluorine-containing low molecular weight compound, and the emulsifier contains an anionic surface active agent having pKa of at least 2.