An illumination panel, which comprises an optical fiber sheet formed by arranging a plurality of optical fibers having a core-sheath structure, which has one end optically connected to a light source and a light-leaking portion on at least one surface thereof, a surface panel arranged on the front surface side of the optical fiber sheet, and a reflecting layer arranged on the back surface side of the optical fiber sheet, wherein the light-leaking portion is formed of a plurality of flaws extending to the core of the optical fiber from the sheath thereof, the light-leaking width of the light-leaking portion increases toward the side far from the light source from the side near to the light source, the presence density of the flaws increases toward the side far from the light source from the side near to the light source, and the depth of the flaws increases toward the side far from the light source from the side near to the light source, whereby the entire illumination surface is uniformly illuminated.
A space at least partly enclosed by an appliance housing can be illuminated by utilizing at least one lamp outside that space and coupling a light pipe system to that lamp so that light can be conducted into the space by a light-transmission system. Within the space light is emitted from one or more light extractors optically coupled to the light-transmission system. The light extractors are in the form of wave guides provided along a surface with formations or the like from which light is emitted.
A microwave oven includes a main body, a door opening and closing the main body, and a control panel placed in one side of the main body and provided with a plurality of function operators. A guide line is provided on the control panel and lights up to guide manipulation order of the function operator.
An optical fiber illuminator display, uses a color filter light source assembly having a color filter cylinder rotated by a motor and a light source to project light through the color filters on the color filter wheel; a display board having patterns formed of holes; and a bunched optical fiber set held by a holder in front of the color filter wheel to transmit color light to the patterns on the display board, and wherein the bunched optical fiber set consists of a plurality of bus wires, the bus wires each being constituted of a plurality of optical fiber filaments arranged in a row, the optical fiber filaments each having one end fastened in the holder and an opposite end respectively inserted in the holes on the display board.
An elongated, lighted message and clearance lighting assembly for mounting into the conventional generally horizontal indentation adjacent the roof line of a cargo vehicle container body. A pair of elongated fiber-optic cables are individually encased in a correspondingly elongated enclosure to illuminate the interior of said enclosure and pass light through an outward translucent face of the enclosure to present a graphic message provided on a translucent strip inside the enclosure. The fiber-optic cables are constructed to propagate light flux longitudinally and also radially outward. A portion of the translucent face of the enclosure may be colored appropriately to provide the legally required clearance lighting function.
A controlled emission of light from an optical waveguide, e.g. a fiber into which light is injected at one end, is effected by modifying the periphery of the waveguide over a generally triangular zone so that there is a controlled emission per unit length at every point along this zone and light emanates continuously over the length of the zone from the fiber.
