Abstract:
A light bulb type fluorescent lamp which is able to suppress generation of electromagnetic waves and to emit beneficial far infrared rays. The light bulb type fluorescent lamp includes a bioceramic material applied to the inner surfaces of an injection housing which contains a stabilizer and other parts. The bioceramic effectively weakens the strength of the electromagnetic waves generated by the stabilizer to minimize damage to electronic equipment. At the same time, the bioceramic emits far infrared rays which benefit the human body, provide a comfortable living environment and raise the efficiency of the body.
Abstract:
A high intensity discharge lamp has a light transmissive envelope and an arc tube located within the envelope. The arc tube contains an arc generating and sustaining medium as well as electrodes. A flare is sealed to the lamp envelope and the flare includes two electrically conductive lead-ins sealed therein, each of the lead-ins having a given diameter. A mica heat shield comprising a planar mica disc frictionally engages the lead-ins, the mica disc having a pair of lead-in receiving apertures therein, the receiving apertures having a diameter greater than the given diameter and each having an oppositely extending, radial slot extending therefrom, each of the slots having a width less than the given diameter. The mica heat shield is positioned on the lead-ins closely and adjacent to the upper surface of the flare by having the slots in frictional engagement with the lead-ins.
Abstract:
The invention relates to a high-pressure metal halide lamp provided with a discharge vessel with a ceramic wall enclosing a discharge space. The vessel has a cylindrical portion of internal diameter ID which is closed off at either end by end wall portions which form end faces of the discharge space. At least two electrodes are arranged in the discharge vessel, whose respective tips have an interspacing EA such that ##EQU1## The electrodes have lead-throughs which are enclosed in ceramic closing plugs and are connected thereto in a gastight manner by means of ceramic glazing joints. According to the invention, the rated lamp power is at most 100 W, and an electrode tip lies substantially in the adjacent end face. A closing plug is fastened in the relevant end wall portion in a gastight manner at a distance from the end face.
Abstract:
An apparatus for producing ultraviolet light at wavelengths capable of interacting with atmospheric oxygen to generate a predetermined amount of ozone including a lamp having a tube including a first section capable of emitting UVA light without emitting UVB light and a second section capable of emitting both UVA and UVB light, and a generally tubular sleeve capable of attenuating UVB light mounted to the tube for sliding movement along and covering a selected portion of the second section and attenuating a predetermined amount of UVB light emitted therefrom. An element for fixing the sleeve to the tube at a desired position are provided, and the sleeve may include a plurality of individually slidable sleeve segments. A method for producing ultraviolet light at wavelengths capable of interacting with atmospheric oxygen to generate a predetermined amount of ozone including mounting the sleeve to the tube so that the sleeve is disposed to at least partially surround a portion of the tube and is capable of sliding movement along a portion of the tube, and slidably adjusting the sleeve with respect to the tube to cover a selected portion of the second section and attenuate a predetermined amount of UVB light.
Abstract:
A fluorescent lamp device includes a transparent sealed container which is filled with a working gas, an electron emitting unit which extends into the container and which is operable to emit electrons that interact with the working gas to generate short-wave ultraviolet energy, and a light emitting member which is disposed in the container and which is made of an insulator material. The light emitting member has an external surface coated with a layer of fluorescent material that converts the ultraviolet energy into visible light.
Abstract:
The present invention is to provide a gas discharge tube which is properly lighted to improve the reproducibility of a satisfactory light emission state. The gas discharge tube includes an envelop for accommodating a hot cathode for emitting thermoelectrons, an anode for receiving the thermoelectrons, a focusing electrode having a focusing opening for converging paths of the thermoelectrons, and a discharge shielding member supporting the focusing electrode and the anode, the discharge shielding member further supporting a cathode box for surrounding the hot cathode while being electrically insulated from the focusing electrode. Since a lighting device for the gas discharge tube sets the focusing electrode to a zero or negative potential while an electric field is generated between the hot cathode and the anode, the lighting device will be certainly turned on.
Abstract:
A gas discharge tube of the present invention has an envelope for accommodating an anode for receiving thermoelectrons emitted from a thermionic cathode, a focusing electrode for focusing a path of the thermoelectrons from the thermionic cathode to the anode, and a discharge shielding plate consisting of a material having electrical insulating properties, the anode being arranged in contact with one side of the discharge plate, and the focusing electrode being arranged in contact with the other side of the discharge shielding plate. Since the anode and the focusing electrode are arranged in contact with both the sides of the discharge shielding plate consisting of an insulating material such as a ceramic, the positions of these electrodes are held at high accuracy, and the electrical insulating properties therebetween are maintained even at a high temperature during long-time continuous light emission. For this reason, a short circuit between the electrodes and variations in length of a discharge path can be prevented. Therefore, a gas discharge tube having a long service life and a high operational stability during long-time continuous light emission can be provided.
Abstract:
The electrodes of a flat panel cold cathode discharge lamp are each formed from a block of metal with holes arranged side-by-side along the electrode which open into the gas-discharge volume of the lamp. The holes extend at an angle of about 25-35 degrees away from the normal to the surface of the electrode and are formed by laser machining.
Abstract:
Disclosed is a protective lamp-shade consisted of a cylindrical shell molded from polycarbonate resin, and two silicone rubber end caps mounted on the lamp tube of a lamp assembly at two opposite ends to hold the cylindrical shell in place, wherein the cylindrical shell has parallel teeth around the inside or outside wall to refract the light of the lamp tube of the lamp assembly, and is peripherally and partially coated with a layer of white zinc coating along its length for reflecting the light of the lamp tube of the lamp assembly.
Abstract:
A metal halide arc discharge lamp includes an arc tube and a light-transmissive shroud mounted within a lamp envelope. The arc tube and the shroud are mechanically supported within the lamp envelope by resilient spring members. Since the support structure for the arc tube and the shroud is mechanically and electrically isolated from the lamp stem, leakage current between the support structure and the electrical inleads is eliminated, thereby reducing sodium loss from the arc tube and extending the operating life of the lamp. The spring-mounted construction enables the lamp to withstand mechanical shock and vibration.