Abstract:
A light emitting device comprising a glass envelope having front and back members, at least one of the members having a continuous channel (22) formed in one surface, the channel including connected sections (24 and 26) having different dimensions, the members being hermetically joined to enclose the channel.
Abstract:
A flat panel lamp has internal walls forming a serpentine discharge path between two internal electrodes. Two glow mode electrodes in the form of interdigitated combs are laid on the outside of the front panel of the lamp, on top of the walls. The internal electrodes are connected to a first drive circuit; the glow mode electrodes are connected to a second drive circuit, which drives them at a frequency of about 10 MHz. At high brightness, only the internal electrodes are operative; at low brightness, only the glow mode electrodes are operative; and at intermediate brightness the two sets of electrodes are alternately energized.
Abstract:
A flat fluorescent lamp exhibits increased brightness through selective angular tuning of emitted light. A diffuse channel is formed in a substrate such that the upper portions of the channel walls taper inward toward the diffuse channel cavity to cause light to be emitted from the lamp in a more intense cone of viewable light over a narrow range of viewable angles. The interior of the channel may be at least partially covered by additional materials, such as a reflective material for enhancing brightness.
Abstract:
A meander-shaped low-pressure mercury discharge lamp with cold electrodes (7, 8), in particular for use in an illumination panel for a liquid crystal display. The geometry of the tubular lamp vessel (1) bent into a meander shape is so chosen, for obtaining a good homogeneity of the luminance and a high luminous efficacy, that the length of the discharge path is between 250 and 1000 times the internal diameter of the lamp vessel (1). The internal diameter of the lamp vessel (1) preferably has a value of between 2.0 and 3.5 mm.
Abstract:
The present invention is directed to a method for forming glass articles containing internal enclosed channels. The method comprises the following steps: (a) delivering and depositing a first or channel-forming ribbon of molten glass to a surface of a mold assembly having a mold cavity possessing at least one channel-forming groove formed therewithin and a peripheral surface, wherein the channel-forming ribbon overlies the mold cavity and the peripheral surface of the mold assembly; (b) allowing the channel-forming ribbon of molten glass to substantially conform to the contour of the mold cavity resulting in the formation of at least one channel in the ribbon of the molten glass; (c) delivering and depositing a second or sealing ribbon of molten glass to the outer surface of the channel-forming ribbon of molten glass wherein the viscosity of the sealing ribbon is such that the sealing ribbon (i) bridges but does not sag into complete contact with the surfaces of at least one channel of the channel-forming ribbon and (ii) forms a hermetic seal wherever the sealing ribbon contacts the channel-forming ribbon to form a glass article possessing at least one enclosed channel; and, (d) removing the glass article from the mold.
Abstract:
A planar fluorescent lamp employing both hot cathode and cold cathode operation is described. The lamp includes a first transparent cover bonded atop a metal body with a serpentine channel therein. The lamp body is coated with an insulative coating and the glass solder bead bonds the cover to the lamp at its perimeter and along the ridges defining the serpentine channel. An alternative embodiment of the lamp includes a second transparent cover bonded above the first transparent cover enabling the fluorescent material to be contained in a second enclosure, isolated from the source of light energy. A second alternative embodiment conceals the electrodes of the lamp beneath the lamp body and provides plasma slots to allow the concealed electrodes to energize the lamp. Another alternative embodiment utilizes a conductive transparent coating on the lamp cover to allow the lamp cover to supplement the lamp body as a cold cathode.
Abstract:
The present invention is directed towards a lightweight, sealant-free, thin glass envelope having a front surface and back surface laminated and integrated together, i e. specifically, a unitary envelope body having at least one discharge or ionizable gas channel. The glass envelope exhibits a weight to area ratio of .ltoreq.1.0 g/cm.sup.2. Lightweight, internally channeled light-emitting devices can be formed from these thin glass envelopes by etching electrodes to the envelope, at opposite ends of, and in communication with, the gas channel which contains a discharge or ionizable gas.
Abstract translation:本发明涉及一种轻质,无密封剂的薄玻璃外壳,其具有层压并集成在一起的前表面和后表面。 具体地,具有至少一个排放或可电离气体通道的整体包络体。 玻璃外壳的重量/面积比为 = 1.0g / cm 2。 通过在包含放电或可电离气体的气体通道的相对端并且与其连通的情况下,通过蚀刻电极到外壳,可以从这些薄玻璃封套形成轻量的,内部通道的发光器件。
Abstract:
A low pressure gas discharge lamp has a low profile which includes at least one glass plate with a tube envelope channel having a cover plate covering the evacuation tube which is substantially flush with the plate.
Abstract:
A planar fluorescent and electroluminescent lamp having two pairs of electrodes. Planar electrodes on an outer surface of the lamp create a plasma arc by capacitive coupling. The planar electrodes also cause embedded phosphor to emit light on the electroluminescent phenomena. In one embodiment, a second chamber is on top of the first chamber and light passes from a primary chamber through the second chamber, and is emitted by the lamp.