Abstract: In a vehicle head-up display device that reflects a display light transmitted through a dust-proof cover on a windshield or a combiner, and viewably displays display information as a virtual image from a driver's seat of a vehicle, the dust-proof cover has a light transmissive property produced by being rolled, when a line between a first point a first end side of the display in a longitudinal direction of the display and a second point being at the same height as the first point in a second end side opposite to the first end side is a longitudinal axis, and a luminance of a virtual image is adjusted by adjusting an angle between a rolling direction of a resin sheet used for the dust-proof cover and a virtual image longitudinal axis, which corresponds to the longitudinal axis, of a virtual image of the display reflected by the reflector.

Abstract: In a vehicle head-up display device that reflects a display light transmitted through a dust-proof cover on a windshield or a combiner, and viewably displays display information as a virtual image from a driver's seat of a vehicle, the dust-proof cover has a light transmissive property produced by being rolled, when a line between a first point a first end side of the display in a longitudinal direction of the display and a second point being at the same height as the first point in a second end side opposite to the first end side is a longitudinal axis, and a luminance of a virtual image is adjusted by adjusting an angle between a rolling direction of a resin sheet used for the dust-proof cover and a virtual image longitudinal axis, which corresponds to the longitudinal axis, of a virtual image of the display reflected by the reflector.

Abstract: A head-up display device for projecting an image on a display screen includes: a liquid crystal display element for generating an original image; a light source for emitting light toward the liquid crystal display element; a reflection mirror for reflecting a light image of the original image passing through the liquid crystal display element and for projecting the light image on the display screen; and a concave cylindrical lens having a concave surface and disposed between the liquid crystal display element and the reflection mirror. The concave surface has a curved shape along with x axis of three-dimensional coordinates of the concave cylindrical lens. The concave surface extends along with y axis. The concave surface is rotated around the x axis so that z axis of the concave surface is tilted from an optical axis from the light source to the reflection mirror.

Abstract: A vehicle display apparatus includes a display section, an estimation section, and a controller. The display section has a screen and displays an image on the screen so that a user views a design in the image at a position away from the screen by a predetermined distance in a direction perpendicular to the screen. The estimation section estimates whether a movement of a line of sight of the user to the screen from a region outside the screen occurs. The controller gradually increases the distance, when the estimation section estimates that the movement occurs.

Abstract: A head-up display apparatus allows an occupant of a vehicle to visually perceive a virtual image of an image light reflected by a windshield after passing through a cylindrical lens. The cylindrical lens is inclined against the image light to thereby reflect outside light not to reach an eye range of the occupant. The cylindrical lens is placed in a light guide portion such that (i) an action axis direction for an optical action and (ii) a horizontal direction in the display image agree with each other. Of the cylindrical lens, an inclination angle and installation depth are so set that light incident at an angle equal to or greater than an interception upper-limit incident angle and reflected by a pass-through side of the cylindrical lens does not arrive at the eye range of the occupant.

Abstract: A flat nonaqueous secondary battery including: a positive electrode plate including a positive electrode active material; a negative electrode plate including a negative electrode active material; and a porous insulator arranged between the positive electrode plate and the negative electrode plate, wherein an electrode stack including the positive electrode plate and the negative electrode plate stacked with the porous insulator interposed therebetween is wound three or more times to form an electrode group which is flat when viewed in cross section, the electrode group includes a flat straight part, and a pair of curved parts, the electrode group is fixed with a fixing member not to become loosened, at least two gaps are provided between adjacent turns of the electrode stack in each of the curved parts, and one of the at least two gaps adjacent to each other inside the other gap is larger than the other gap.

Abstract: A battery case is made by cutting from a blank case of a bottomed cylindrical battery case having an unwanted portion at an opening portion the unwanted portion from the case wall in the circumferential direction by a blade. The cutting of the case wall is performed so as to render a cutting-end portion higher than a cutting-start portion. Thus, re-cutting of the cutting-start portion by the blade after it has already completed one rotation can be avoided. As a result, the generation of thread-like chips from re-cutting of the cut surface can be avoided.

Abstract: A head-up display device for projecting an image on a display screen includes: a liquid crystal display element for generating an original image; a light source for emitting light toward the liquid crystal display element; a reflection mirror for reflecting a light image of the original image passing through the liquid crystal display element and for projecting the light image on the display screen; and a concave cylindrical lens having a concave surface and disposed between the liquid crystal display element and the reflection mirror. The concave surface has a curved shape along with x axis of three-dimensional coordinates of the concave cylindrical lens. The concave surface extends along with y axis. The concave surface is rotated around the x axis so that z axis of the concave surface is tilted from an optical axis from the light source to the reflection mirror.

Abstract: A battery case is made by cutting from a blank case of a bottomed cylindrical battery case having an unwanted portion at an opening portion the unwanted portion from the case wall in the circumferential direction by a blade. The cutting of the case wall is performed so as to render a cutting-end portion higher than a cutting-start portion. Thus, re-cutting of the cutting-start portion by the blade after it has already completed one rotation can be avoided. As a result, the generation of thread-like chips from re-cutting of the cut surface can be avoided.

Abstract: A head-up display apparatus allows an occupant of a vehicle to visually perceive a virtual image of an image light reflected by a windshield after passing through a cylindrical lens. The cylindrical lens is inclined against the image light to thereby reflect outside light not to reach an eye range of the occupant. The cylindrical lens is placed in a light guide portion such that (i) an action axis direction for an optical action and (ii) a horizontal direction in the display image agree with each other. Of the cylindrical lens, an inclination angle and installation depth are so set that light incident at an angle equal to or greater than an interception upper-limit incident angle and reflected by a pass-through side of the cylindrical lens does not arrive at the eye range of the occupant.

Abstract: A display apparatus for use in a vehicle includes an irradiation source for irradiating a light of an image, a redirection component for redirecting the light of the image, an optical component for magnifying the image that enters therein, and a reflection component for reflecting the light of the image for an occupant of the vehicle. The redirection component is disposed at an angle to a light axis of the light of the image irradiated by the irradiation source in a light path between the irradiation source and the optical component, and the redirection component corrects a distortion of the virtual image being perceptible for the occupant of the vehicle by at least one of the optical component and the reflection component.

Abstract: A fluidic flowmeter is located downstream of a valve. A wire gauze or net having small meshes is located on the upstream side of a nozzle forming the inlet to the fluidic element to stabilize flow.

Abstract: The flowrate of fluid to be measured, that flows into the nozzle of a fluidic oscillator is stabilized by fitting flow adjusting plates on the upstream side of the nozzle.