摘要:
A projecter having a lamp, a lamp box containing the lamp, an outlet fan for discharging air from the lamp box, an optical system member which receives a light beam from the lamp and outputs an image light, an optical system box containing the optical system member, and an inlet fan for blowing outside air into the optical system box. The projector also has a first ventilating duct that directs the outside air blown in by the inlet fan into the lamp box.
摘要:
It is an object to obtain a light source device and a projection type display device in which a fragment can be completely enclosed therein even if a discharge lamp bursts during lighting. During normal lighting of a discharge lamp (1), an internal space of a light source device (10) and an external space are spatially connected to each other through a vent hole (43) formed on a cutoff valve mechanism (45) and a vent hole (100) formed on a concave reflecting mirror (4). Cooling air is introduced and discharged between the internal space and the external space so that the discharge lamp (1) is cooled down. When the discharge lamp (1) bursts during lighting for some reason, a very strong impulsive pressure wave is generated in a moment of the burst. The pressure wave presses a movable valve (41) provided in the cutoff valve mechanism (45) through the vent hole (100). By the pressing carried out with the pressure wave, the movable valve (41) is pushed up in a direction of an arrow (K1), thereby closing the vent hole (43).
摘要:
A projection exposure apparatus includes a light source, a condenser lens for illuminating an illumination light emanating from the light source onto a mask on which a circuit pattern has been formed, a projection lens for condensing the illumination light which has passed through the mask onto a surface of a wafer, and an aperture member disposed between the light source and the condenser lens and having both a transmission area for shaping the light emanating from the light source and a light blocking area formed at a central portion of the transmission area. An outer diameter of the transmission area of the aperture member is set such that a ratio .sigma. of an outer diameter of an effective light source to a diameter of a pupil of the projection lens is 0.6.+-.0.3, while a light blocking rate of the light blocking area is set to 60.+-.35%.
摘要:
In an indoor equipment of an air conditioner in which a heat exchanger, a blower, and a drain pan receiving a drain water having been condensed at mentioned heat exchanger below the heat exchanger are contained in an internal part of the indoor equipment housing including an air inlet and an air outlet; and a back portion of the drain pan is faced to an air flow path communicating with mentioned air outlet, and a stabilizer is disposed at an end portion on the upstream side of the air flow path of this drain pan, the drain pan 4 is integrally formed of a drain pan body 41 and a stabilizer portion 42 by injection molding; and a concave portion 40 is formed on the air flow path side in the vicinity of the boundary between the drain pan body and the stabilizer portion.
摘要:
A projection exposure apparatus for use in LSI production comprises a light source, a light condensing optical system through which light from the light source is condensed and applied to a mask carrying a circuit pattern, a projection lens system which projects the light transmitted through the mask onto the surface of a wafer, and an aperture member which is interposed between the light source and the light condensing optical system. The aperture member has a light transmission region for transmitting the light from the light source and a light-interrupting member disposed to extend across the light transmission region. The shape or configuration of the light-interrupting member is determined in accordance with the geometry of the circuit pattern formed on the mask.
摘要:
A screen panel includes a rigid glass, a lenticular lens and a Fresnel lens laminated with each other, and the edges of the screen panel are sealed. An air evacuation path is formed between the lenses by wires inserted between the contact surfaces of the lenses, or by convexes or concaves previously formed on one of the contact surfaces. Because of the provision of the air evacuation path, the air between the lenses of the screen panel is sufficiently evacuated, and the lenses can closely attached to each other. Therefore, the flatness of the screen panel can be enhanced, and the degradation of the image quality can be prevented.
摘要:
According to the present invention, insulating paper immersed in an oil is heated and deteriorated at a temperature up to 110° C. which is in an operating temperature region for an oil-filled electric apparatus, and the value of the degree of the polymerization which decreases with the deterioration of the insulating paper and amount of carbon dioxide and carbon monoxide which is generated by the heat decomposition of the insulating paper and which is dissolved in the insulating oil are used to observe the generation rate thereof. The present invention is a method of evaluating deterioration characteristics of insulating paper from the change of the degree of polymerization with passage of time and from the temperature dependence of the gas generation rate. The deterioration of the insulating paper has different aspects in the regions higher and lower than 110° C., and the deterioration characteristics of the insulating paper on the low temperature side can be accurately evaluated. The deterioration of the insulating paper has different aspects in the regions higher and lower than 110° C., and the deterioration characteristics of the insulating paper on the low temperature side can be accurately evaluated.
摘要:
A polarizing beam splitter extracts orthogonally polarized light beams from natural light and distributes those to liquid crystal panels, which modulate polarization states of those polarized light beams in accordance with a luminance signal and chrominance signals of video signals, respectively. The modulated light beams are combined by the same polarizing beam splitter, and the combined light is enlarged and projected onto a screen by a projection lens, to reproduce a projected image.
摘要:
A method for manufacturing a superconducting magnet comprising the steps of applying a bonding agent on a length of a superconductor by passing the superconductor through a bath of the bonding agent to thereby coat the superconductor with the bonding agent. The superconductor coated with the bonding agent is simultaneously wound to form a winding which is then hardened by heating for example to form a rigid winding without voids.
摘要:
In an apparatus for measuring an angular velocity variation rate of a rotary axle, an approximately circular disc shaped plate is attached approximately concentrically around the rotary axle, in addition to a first pair of velocity pulse generators, each velocity pulse generator of the first pair being dispose around pulse circumference of the plate on a first virtual line passing through a center of the rotatory axle with one of the velocity pulse generators positioned in an 180° revolution difference with respect to each other, each velocity pulse generator of a second pair being disposed around the circumference of the plate on a second virtual line passing through the center of the rotary axle and being inclined through an angle of 180°/m to the first virtual line set when a variation in the angular velocity variation rate indicate signal occurs m-th number of times per revolution of the rotatory axle.