摘要:
An apparatus is provided for controlling the charging of a main capacitor of a flash unit. Comparison means detect the timing at which a voltage V across the main capacitor reaches a reference voltage V.sub.1, at which point a flash photograph can be taken. A timer detects whether a predetermined time period has elapsed since the voltage V across the main capacitor reached the reference voltage V.sub.1 so as to stop charging the main capacitor. When the voltage V across the main capacitor drops to the reference voltage V.sub.1, as a result of the phenomenon known as "spontaneous discharge", recharging of the main capacitor occurs and the above process is repeated. When the recharging of the main capacitor has been performed over a predetermined time period or a predetermined number of times, the charging of the main capacitor is stopped. A second embodiment is disclosed wherein flash photography can occur if a predetermined value is greater than the time period that has elapsed until a shutter on a camera associated with the flash unit is operated after the voltage V across the main capacitor has reached a reference voltage V.sub.2 (which is greater than V.sub.1. If the time period is less than the predetermined value, the operation of the flash unit is inhibited so as to restart the charging of the main capacitor.
摘要:
A display device in a camera with a zoom lens, for providing a visual indication of the setting of the zoom lens. It includes a zoom encoder (10) for detecting the zoom lens setting, a liquid crystal display (8) having a plurality of display segments (S1-S15) disposed in an arcuate pattern, and drive circuits (24, 25) for driving the display segments. A micro-computer (20) controls the drive circuits, based on the zoom setting as detected by the zoom encoder (10), such that the state of each of the display segments can be changed by the drive circuits in response to a change in the angle of view of the zoom lens.The display device can provide an intuitively perceivable visual indication with the arcuate array of display segments (S1-S15).
摘要:
A vehicle outer panel structure which is excellent in heat-insulation and reinforcement effects and is facilitated in production. The vehicle outer panel structure is produced by first laminating first, second and third layers to form a laminated sheet. The first layer is formed of a resin composition capable of foaming and including vinyl chloride resin, plasticizer, foaming agent, epoxy resin, hardener for the epoxy resin. The content of the epoxy resin is within a range of from 20 to 500 parts by weight relative to 100 parts by weight of the vinyl chloride resin. The second layer is formed of fiber cloth. The third layer is formed of metallic film having a thickness not more than 50.mu.. The first, second and third layers are stuck with each other so that the second layer is interposed between the first and third layers. Subsequently, the thus formed laminated sheet is stuck to the back side of a vehicle outer panel, and thereafter heated so that the resin composition of the laminated sheet is foamed and hardened.
摘要:
A machine-tool power chuck operated by pressurized gas supplied from an gas pressurizing source has a piston-cylinder actuator having a piston dividing the piston chamber into a rear pushing side and a front pulling side. When the pressurized gas is supplied into the pushing side, a wedge plunger in a sliding chamber is caused to shift whereby workpiece chucking jaws are opened, and, when the pressurized gas is supplied into the pulling side, the jaws are moved inward for chucking the workpiece. Oil mist supply passages communicate at the opposite ends thereof respectively to the pushing and pulling sides of the actuator and have, at a branching junction thereof from which a gas injection passage branches off, a control valve in the form of a shuttle valve having a shiftable ball. The control valve operates to cut off communication of the gas injection passage with one of the pushing and pulling sides, to which the pressurized gas is not supplied. The pressurized gas is provided with an oil mist for lubrication. When the piston is operated, the pressurized gas acting on the piston and containing the oil mist is allowed to flow via the control valve into the gas injection passage and then into the sliding chamber for the wedge plunger, thereby lubricating the rubbing surfaces of the sliding chamber and the wedge plunger as well as other adjoining members.
摘要:
In a method of producing a hydrated iron oxide as a starting material for a magnetic powder by aging a suspension of a ferric hydroxide prepared by reacting a ferric salt with an aqueous solution of alkali, the aging temperature is controlled between 20.degree. and 100.degree. C. and pH is controlled between 1 and 6 for the first 5 to 240 minutes while nuclei of hydrated iron oxide crystals generate, and then the aqueous solution of alkali is added again to adjust the pH value to 10 to 13.5 to make the crystals grow. This production method is capable of producing an acicular hydrated iron oxide having a reduced particle-size distribution range and also capable of controlling the length of the crystals as desired.
摘要:
To provide a catalytic converter that reduces non-uniformity of temperature of a catalyst support and that can approach a uniform temperature distribution, and a structural body for supporting a catalyst that structures this catalytic converter. At a catalyst support, gradually decreasing width portions, at which a width thereof gradually decreases toward electrode centers, are formed at regions where electrodes, are contactingly disposed, as seen in a cross-section orthogonal to a direction in which exhaust flows. The width is shorter than a length of a center line at a given position. Heat generation and heat dissipation of the catalyst support are balanced overall.
摘要:
Methods of diagnostic test pattern generation for small delay defects are based on identification and activation of long paths passing through diagnosis suspects. The long paths are determined according to some criteria such as path delay values calculated with SDF (Standard Delay Format) timing information and the number of logic gates on a path. In some embodiments of the invention, the long paths are the longest paths passing through a diagnosis suspect and reaching a corresponding failing observation point selected from the failure log, and N longest paths are identified for each of such pairs.
摘要:
In a variable valve opening property internal combustion engine, a roller link (22) is provided with a cam roller (31) at a free end thereof which engages a cam (3) of a camshaft (4) and a pressure surface (47) of a spring device (41). The roller link is pivotally supported by a bearing portion of a control link (21) which can be adjusted in position by using an actuator (14). The roller link is additionally provided with a roller shaft (31) that engages a slipper surface of a rocker arm (6). The pressure surface of the spring device may be contoured or otherwise inclined so that the direction of action of the spring device on the cam roller can be directed in an optimum direction irrespective of the adjusted position of the pivot point of the roller link.
摘要:
A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well a into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e). A single cam plate (53) is provided to move the finder assembly and the strobe assembly. The photographic aperture (22b) can be selectively closed by barrier plates (31a) when the zoom lens is moved into its fully collapsed position. A light intercepting assembly (210) is provided for preventing light from entering the photographic optical assembly via cam grooves (20 and 21). This intercepting assembly includes a flexible code plate (90) which surrounds a peripheral portion of the cam ring (14) and which provides positional information relating to the position of the zoom lens.
摘要:
A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an initial position on the axis to a final stationary position that establishes the focal length of the lens. Control apparatus is responsive to the setting of the switch for operating the motor such that movement of the lens from its initial position to its final position always ends after the lens travels to its final position in a predetermined direction.