Abstract:
Excimers are generated by directing an electron beam at about 5 KeV to about 40 KeV into an excimer forming gas such as He, Ne, Ar, Kr, and Xe or mixtures of these with other gases through a ceramic foil such as SiN.sub.x. Vacuum ultraviolet (VUV) light is emitted by the excimers or by other species in contact therewith. The invention can provide intense, continuously operable broadband or monochromatic VUV light sources.
Abstract:
There is provided a fluorescent lamp comprising a tubular glass bulb, a fluorescent layer formed on an inner surface of the tubular glass, an external electrode provided on an outer surface of the tubular glass bulb, and an internal electrode provided on the inner surface of the tubular glass bulb, wherein the internal electrode formed from a conductive member is fixed on the inner surface of the tubular glass bulb by a glass having a low melting point to be in close contact with the inner surface of the tubular glass bulb. This makes it possible to arrange the tubular glass bulb and the internal electrode which have different thermal expansion coefficients without any problem due to resonance with vibration.
Abstract:
In the gas discharge image display of this invention, the peak value of a write pulse supplied to one of two electrodes of each of fluorescent lamps aligned in a matrix form is substantially equal to the peak value of a sustain pulse supplied to that electrode. Therefore, when a row line drive circuit or a column line drive circuit supplies, in a sustain period of a fluorescent lamp to be discharged, a write pulse to another fluorescent lamp aligned in the same row or column of the matrix form, a voltage at the fluorescent lamp to be discharged can be made constant in the sustain period.
Abstract:
A lamp for providing visible light which utilizes a fill containing selenium and/or sulfur, or compounds of these substances. The lamp is excited such that the excited fill emits radiation from elemental selenium and/or elemental sulfur which is in a continuous band principally within the visible range.
Abstract:
An improved bulb mounting arrangement for an electrodeless lamp to prevent the bulb from rotating during lamp operation. The shape of the bulb mounting projection ends and the shape of the cavity side wall openings are arranged so as to cooperate with each other to preclude substantial rotation of the bulb.
Abstract:
A gas discharge display apparatus in the form of a panel housing a plurality of electroluminescent gas-filled discharge chambers adapted for interactively controlled illumination. The apparatus generally includes an electrically conductive surface underlying the discharge chambers utilized as an electrode for energizing the electroluminescent gas in the chambers. A plasma glow discharge is interactively obtained in the chambers by placing a ground coupled conductive member, such as a human hand, proximal to the chambers opposite the conductive surface.
Abstract:
An electrodeless discharge lamp device has an envelope in which a gas that discharges to emit light upon application of a high frequency voltage is sealed, the envelope including two straight pipe parts forming a circulating discharge path, so that a high frequency electric current is caused to flow throughout the discharging gas in the entire envelope and a uniform discharge light emission can be attained.
Abstract:
A method of cooling the lamp envelope of an electrodeless lamp by directing a stream of cooling gas at the envelope while providing relative rotation between the lamp envelope and the stream of cooling gas. The relative rotation can be achieved by rotating the envelope, or the source of cooling gas, or both.
Abstract:
A method for the production of dielectric glass compositions useful in a gas panel or plasma display device apparatus is disclosed. The method comprises providing a supported glass substrate and sequentially depositing thereon firstly a glass frit of appropriate particle size having compatible thermal expansion properties with said glass substrate and capable of forming into clear substantially bubble-free films at a temperature equal to or less than 620*C. Secondly, depositing thereon a layer of glass frit having a viscosity higher than said first deposited glass frit, having a maximum softening temperature of 620*C, followed by firing said deposited composite frit layers to a temperature of approximately 620*C in an atmosphere of nitrogen, air or oxygen.
Abstract:
A method and device for interfering with or reducing the activity of one or more targets by over-stimulating the targets optic nerve with a high intensity incoherent light beam (HIILB) emanating from an electrode-free plasma (EFS) lamp. The steps of the method include providing a HIILB from an EFS lamp housed in a device and directing the beam at the one or more targets when facing the device. The device includes an outer housing with a head portion having a window opening for transmitting a HIILB, an optical system mounted in the head portion facing the window, one or more EFP lamps mounted at the focus of the optical system to collimate the light towards the window, an electrical circuit for driving the one or more lamps wherein the electrical circuit has an energy source and a plasma lamp induction coupling to the energy source for operation.