摘要:
An optical position of a display device with respect to an optical axis of a projection optical system is displaced in a direction perpendicular to the optical axis in accordance with a change in the size of a projected image. For instance, a transparent flat plate is disposed in front of a projection lens, and the transparent flat plate is tilted in association with a rotation of a zoom adjustment ring. As the transparent flat plate is tilted, the apparent position of the display device relative to the projection lens is displaced in the direction perpendicular to the optical axis of the projection optical system. Thereby, the projected image on a screen is located at a proper position corresponding to a zoom state. Tilt control of the transparent flat plate is realized by a cam mechanism, for instance.
摘要:
Provided is a polymer electrolyte containing a block copolymer comprising one or more blocks having sulfonic acid groups and one or more blocks having substantially no sulfonic acid group, and at least one block among all blocks is a block having aromatic rings in the main chain thereof, and a method for producing the same. The polymer electrolyte is suitable for a proton conductive film of a fuel cell due to excellent water resistance and heat resistance, and high proton conductivity.
摘要:
A hold-type display apparatus is more likely to suffer the deterioration in the visibility of moving images due to the blur effect, compared to an impulse-type display apparatus. A single frame period is divided into a first period and a second period. Pixel data to be written to a pixel are written in a concentrated manner in the first period during a frame period. At this time, a write value for the pixel is set to twice a value of the image data in order not to lower the brightness of the images as a whole. However, only if the doubled value exceeds a range that can be displayed, the remaining pixel data are written in the second period. Thus, the change in display brightness approximates the impulse-type display apparatus, so that the visibility of moving images is improved.
摘要:
A developing device and an image forming apparatus equipped with the developing device are provided to suppress the deterioration in picture quality of an image formed on a sheet due to toner-clump created in a developer vessel. The developing device includes a developing roller adapted to hold toner thereon while rotating and to supply the toner onto a photosensitive surface of a photosensitive body and a toner recovery vessel adapted to accommodate the developing roller therein with facing an opening portion thereof and to supply the toner to be held on the developing roller onto the developing roller while recovering residual toner remaining on the developing roller. The toner vessel including a protrusion portion protruded toward a roller surface of the developing roller. The protrusion portion is provided at an inner wall part which confronts the roller surface of the developing roller and where the residual toner begins to drop from the developing roller.
摘要:
A color separating and mixing element comprises, in its transparent cube, a first optical function surface formed on a dividing surface for dividing the cube into two triangular prisms and a second optical function surface formed on another dividing surface. The first optical function surface has the function of transmitting both P-polarized light and S-polarized light with respect to red light, has the function of transmitting both P-polarized light and S-polarized light with respect to green light, and has the function of transmitting P-polarized light and reflecting S-polarized light with respect to blue light. The second optical function surface has the function of transmitting P-polarized light and reflecting S-polarized light with respect to red light, has the function of transmitting P-polarized light and reflecting S-polarized light with respect to green light, and has the function of transmitting both P-polarized light and S-polarized light with respect to blue light.
摘要:
An ion wind generator (20) is arranged on one side of a light source (1). The ion wind generator (20) produces an air current by negatively ionizing air by corona discharges at a needle electrode (21), or negative side, and drawing the negatively-ionized air at a cylindrical electrode (22), or positive side. The air current blows toward the light source (1) and removes heat generated by the light source (1). An ultraviolet ray from the light source (1) is introduced to a vent of the ion wind generator (20) by a first dichroic mirror (4) and a ultraviolet ray reflection mirror (17). Though air exhausted from the vent includes ozone (o3) produced by corona discharges, the ozone is decomposed by the ultraviolet ray.
摘要:
a liquid cooling apparatus provided on an apparatus having a heat unit generating heat, and configured to cool the heat unit by coolant includes; a coolant tank configured to store the coolant; a radiator configured to cool the coolant; and a coolant pipe which is a flow path of the coolant and connecting the coolant tank and the radiator. The coolant tank is arranged adjacent to the radiator in a horizontal direction when the apparatus disposed statically. A size of the coolant tank in a vertical direction is larger than a size of the coolant tank in a horizontal direction when the apparatus is disposed statically.
摘要:
To provide a projection type video display capable of reliably preventing a double image from being produced. A first light flux producer for producing a first light flux and a second light flux producer for producing a second light flux are arranged on the light emission side of a lamp. The light flux producer comprises a condenser lens, a rod integrator, and a pair of lenses. Lights passing through the pair of lenses are respectively refracted by condenser lenses, and are respectively introduced into first and second areas of a liquid crystal display panel in such a manner as to cross an optical surface in a color separating and mixing sector.
摘要:
A developing unit has first and second partition walls and which divide the inside of a developer reservoir into first to third chambers parallel to the developing roller, and first to third mixers which are disposed in the first to third chambers. The first mixer supplies developer to the developing roller by stirring and carrying from one end side to the other end side. The second mixer feeds by stirring and carrying the toner replenished from a replenish device and developer fed from the first chamber to one end side of the first mixer. The third mixer feeds the toner collected from a collection mechanism to one end side of the first mixer by stirring and carrying at a speed lower than the second mixer.
摘要:
A drum brake device prevents shoe clearance over-adjustment by means of a thermo-sensitive member with a lower leg opening force and provides a smaller thermo-sensitive member with a lower cost. A portion between both ends of the brake lever (50) in a direction of crossing the shoe return inhibitor (61) engages with one end of the shoe return inhibitor (61) automatically restricting the return position of the pair of brake shoes (20) and (30); the proximate portion (50a) of the brake lever (50) is pivotally supported on the brake shoe (20); and the free end (50b) side of the brake lever (50) is supported at an end nipple (54) of a brake cable (52) via the thermo-sensitive member (73).