Abstract: This invention relates to a technique for hermetically sealing an artificial leg including a cylinder device. A shell structure surrounds the outside of the cylinder device. The cylinder device is not entirely received within the shell structure, but a rod member extends to the outside of the shell structure from the cylinder body within the shell structure and a part of the rod member is located outside the shell structure. In this invention, the rod member, which extends from the inside to the outside of the shell structure, is hermetically sealed at the periphery thereof by a bellows packing member. The bellows packing member comprises an inner bead, an outer bead which concentrically surrounds the outside of the inner bead, and a bellows packing body part which connects the inner and outer beads.

Abstract: A vehicle light can prevent color variations of the projected image. The vehicle light can include a laser diode, a wavelength conversion member including a phosphor configured to receive blue light emitted from the laser diode and then emitting white light, a projection lens configured to project the white light emitted from the wavelength conversion member to provide forward illumination for a vehicle, and a diffusing portion provided to the projection lens, configured to diffuse the excitation light which is incident on the projection lens from the wavelength conversion member.

Abstract: A multi-articulated link knee joint capable of detecting a bending angle of a knee section without causing problems of an installation space and wiring of a sensor is provided. A four-link knee joint includes a knee section of a four-link mechanism, a fluid cylinder that restrains an action of the knee section, a position detecting device that detects a position of a piston rod with respect to a cylinder tube as an extension and contraction amount of the cylinder, and a computer that acquires a bending angle of the knee section by converting the position detected by the position detecting device.

Abstract: A multi-articulated link knee joint capable of detecting a bending angle of a knee section without causing problems of an installation space and wiring of a sensor is provided. A four-link knee joint includes a knee section of a four-link mechanism, a fluid cylinder that restrains an action of the knee section, a position detecting device that detects a position of a piston rod with respect to a cylinder tube as an extension and contraction amount of the cylinder, and a computer that acquires a bending angle of the knee section by converting the position detected by the position detecting device.

Abstract: A vehicle lighting unit can use a light guiding body, and prevent light loss due to the internal reflection of light at the light exiting surface as a result of being guided through the light guiding body. The vehicle lighting unit can include: a light source; a projection lens; and a light guiding body to collect light from the light source near a rear side focal point of the projection lens so as to guide the light to the projection lens. The light guiding body can include a first optical surface that can serve as a light exiting surface through which the light from the light source guided through the light guiding body can exit. The projection lens can include the first optical surface, a second optical surface, and a third optical surface, and be configured to have the rear side focal point located behind the first optical surface.

Abstract: Provided is a light emitting device used in a vehicle light, the light emitting device can include: an excitation light source that generates excitation light; a wavelength conversion member that absorbs the excitation light and that converts a wavelength of the excitation light to emit light in a predetermined wavelength region that can be different from the wavelength of the excitation light; and a first optical system that directs the excitation light from the excitation light source to the wavelength conversion member, wherein the wavelength conversion member includes at least a first surface, a second surface facing the first surface, and a peripheral end surface arranged between the first surface and the second surface. The first optical system is configured to direct the excitation light from the excitation light source to the first surface. At least part of the second surface is covered by a first light blocking structure.

Abstract: A lighting unit for a vehicle lamp, can include a lens body including an incident surface, a light exit surface, and a reflecting surface configured to internally reflect light having entered the lens body through the incident surface, toward the light exit surface; and a horizontally long light-emitting section disposed at or substantially near a rear focus of the lens body to emit light that enters an inside of the lens body through the incident surface and is internally reflected by the reflecting surface before exiting through the light exit surface. The reflecting surface has at least two V-grooves formed so as to extend along a plane including an optical axis of the horizontally long light-emitting section, the V-grooves being disposed adjacent to each other in a circumferential direction of the reflecting surface. The lighting unit can form horizontally long projected light source images regardless of light exit positions.

Abstract: There is provided a vehicle headlamp that can be miniaturized and that can form a synthetic light distribution pattern (for example, a low-beam light distribution pattern) in which a hot zone is brighter. The vehicle headlamp that forms the synthetic light distribution pattern including the hot zone and a diffusion region diffused from the hot zone, includes at least one first lighting fixture unit including a laser light source and a first optical system that forms a first light distribution pattern to irradiate light forward from the laser light source and irradiate the hot zone, and at least one second lighting fixture unit including an LED light source and a second optical system that forms a second light distribution pattern to irradiate light forward from the LED light source and irradiate the diffusion region.

Abstract: A vehicle light can prevent color variations in a projected image. The vehicle light can include a light source, a wavelength conversion member including a phosphor configured to receive blue light having been emitted from the light source and then emitting white light, and a reflector having a reflection surface that reflects the white light having been emitted from the wavelength conversion member. The reflection surface of the reflector can have an optical structure that can diffuse the blue light incident on the reflection surface from the phosphor, reflect the blue light back to the phosphor, or allow the blue light to pass through the reflection surface to the area rearward thereof.

Abstract: A projector type headlight can include a projection lens arranged on an optical axis extending in a longitudinal direction of a vehicle, and a light source unit arranged on a more rear side than a back side focal plane of the projection lens, the projection lens including resin lenses which are arranged on the optical axis. A resin lens out of the resin lenses arranged closer to the light source unit includes a diffraction grating provided on a lens face in a side opposite to a light source, the resin lens out of the resin lenses arranged closer to the light source unit has a lens face having a positive power, which is arranged in a light source side, and the diffraction grating is designed so as to cancel chromatic aberration of light emitted from the light source unit and emitted forward through the resin lenses.

Abstract: A technology for making the sensation at use of prosthetic limbs utilizing a hydraulic cylinder and a spring cylinder as comfortable as at use of those utilizing a pneumatic cylinder and further for improving walk following properties. In particular, the arrangement of a hydraulic cylinder or a spring cylinder, or the like, is specified. Accordingly, the resistance produced by the hydraulic cylinder or spring cylinder in accordance with an increase of knee angle is increased, The first torque T1 at the first stage of initial period of bend of the knee joint is made small, while the second torque T2 at the second stage of final period of the further advanced bend of knee joint is made large, thereby satisfying a relation of T1?T2, as different from conventional ones.

Abstract: The disclosure relates to a technology of a manual lock mechanism for manually switching over the oscillating motion of an upper member and a lower member at a knee joint between a locked condition and an unlocked condition. More particularly, the disclosure aims at a simple structure of the manual lock mechanism and a size reduction of the knee joint or an artificial leg including the manual lock mechanism. For these purposes, one of oscillating shafts for swingingly coupling the upper and lower members is regulated. Therefore, the manual lock mechanism includes an oscillating shaft including an irregular part and a lock member for regulating the movement of the oscillating shaft. The lock member can be switched over between a locked condition where the lock member is in contact with the irregular part of the oscillating shaft and the unlocked condition where it is separate from the irregular part.

Abstract: A vehicle light can form a synthetic light distribution pattern with an area where a surrounding vehicle exists being made darker than an area(s) surrounding that area. The synthetic light distribution pattern can allow a sufficient illumination range and a center light intensity required for a running beam to be compatible. The vehicle light can also form a light distribution pattern with only an area where a farther surrounding vehicle exists is made dark. The vehicle light can form the light distribution pattern by overlaying a plurality of first nearby illumination areas, a plurality of first farther illumination areas, a plurality of second nearby illumination areas, and a plurality of second farther illumination areas with the respective illumination areas being divided in a horizontal direction and individually controlled in terms of light intensity so that respective vertical division lines of the illumination areas appear in predetermined order in the horizontal direction.

Abstract: A vehicular lighting fixture unit can include a projector lens placed on an optical axis extending in a vehicle front-rear direction. A light-emitting element can be placed between the projector lens and a rear-side focal point of the projector lens at a position lower than the optical axis so as to emit light substantially vertically upward. A phosphor can be placed so as to be closer to a vehicle rear side than the rear-side focal point. A first reflecting surface can reflect the light from the phosphor so as to condense the light toward the optical axis. A second reflecting surface can be placed substantially vertically above the light-emitting element at a position at which the second reflecting surface does not block the reflected light from the first reflecting surface. The second reflecting surface can reflect the light from the light-emitting element toward the phosphor.

Abstract: A projector type lighting unit can include a projection lens having an optical axis, a rear-side focal point positioned on the optical axis, an incident surface, and an exiting surface. A light source can be disposed on or near the focal position of the projection lens, and an image of the light source can be projected through the projection lens. A light path adjusting unit can be configured to diffuse part of the image of the light source in an upward direction when the lighting unit is installed in a vehicle light. The light path adjusting unit can be disposed in between the projection lens and the rear-side focal point of the projection lens, and can be a reflector having a planar mirror inclined with respect to a plane perpendicular to the optical axis of the projection lens toward the projection lens by about 45 degrees.

Abstract: A vehicle lighting device can include an LED light source having a light emitting surface, a laser light source, and a fluorescent body for emitting visible light in response to excitation light from the LED light source and the laser light source. The fluorescent body can have a rear surface formed to have substantially the same size as the light emitting surface, and a front surface located opposite the rear surface. The fluorescent body can be disposed on the light emitting surface such that the rear surface covers the whole light emitting surface. The fluorescent body can emit the visible light from the whole of the front surface, in response to the excitation light from the LED light source. The laser light source irradiates the excitation light to a portion on the front surface. The portion is to emit the visible light to a high illuminance area within a light distribution pattern.

Abstract: A vehicle light can prevent color variations of the projected image. The vehicle light can include a laser diode, a wavelength conversion member including a phosphor configured to receive blue light emitted from the laser diode and then emitting white light, a projection lens configured to project the white light emitted from the wavelength conversion member to provide forward illumination for a vehicle, and a diffusing portion provided to the projection lens, configured to diffuse the excitation light which is incident on the projection lens from the wavelength conversion member.

Abstract: A vehicle light can prevent color variations in a projected image. The vehicle light can include a light source, a wavelength conversion member including a phosphor configured to receive blue light having been emitted from the light source and then emitting white light, and a reflector having a reflection surface that reflects the white light having been emitted from the wavelength conversion member. The reflection surface of the reflector can have an optical structure that can diffuse the blue light incident on the reflection surface from the phosphor, reflect the blue light back to the phosphor, or allow the blue light to pass through the reflection surface to the area rearward thereof.

Abstract: A vehicular lighting fixture unit according to one aspect of the subject matter can include a projector lens placed on an optical axis extending in a vehicle front-rear direction. A light-emitting element can be placed between the projector lens and a rear-side focal point of the projector lens at a position lower than the optical axis so as to emit light substantially vertically upward. A phosphor can be placed so as to be closer to a vehicle rear side than the rear-side focal point. A first reflecting surface can be configured to reflect the light from the phosphor so as to condense the light toward the optical axis. A second reflecting surface can be placed substantially vertically above the light-emitting element at a position at which the second reflecting surface does not block the reflected light from the first reflecting surface. The second reflecting surface can be configured to reflect the light from the light-emitting element toward the phosphor.