Abstract:
In a lighting apparatus using microwave, a lighting apparatus using microwave including a resonator excluding microwave and transmitting a fight, a waveguide placed at an internal domain of the resonator and transmitting the microwave, a microwave generating means installed at the side of the resonator and oscillating microwave into the waveguide, and a bulb placed at the center of the resonator and emitting light by generating a plasma by the microwave transmitted through the waveguide is capable of miniaturizing a lighting system and at the same time improving a lighting efficiency.
Abstract:
A discharge lamp includes means for containing a light emitting fill, the fill being capable of absorbing light at one wavelength and re-emitting the light at a different wavelength, the light emitted from the fill having a first spectral power distribution in the absence of reflection of light back into the fill; means for exciting the fill to cause the fill to emit light; and means for reflecting some of the light emitted by the fill back into the fill while allowing some light to exit, the exiting light having a second spectral power distribution with proportionately more light in the visible region as compared to the first spectral power distribution, wherein the light re-emitted by the fill is shifted in wavelength with respect to the absorbed light and the magnitude of the shift is in relation to an effective optical path length. Another discharge lamp includes an envelope; a fill which emits light when excited disposed in the envelope; a source of excitation power coupled to the fill to excite the fill and cause the fill to emit light; and a reflective ceramic structure disposed around the envelope and defining an light emitting opening, wherein the structure comprises a sintered body built up directly on the envelope and made from a combination of alumina and silica.
Abstract:
An inductively driven gas discharge lamp assembly (20,40) which includes an electrodeless lamp (12,12′), an inductive drive coil (14), and a flux concentrator (22,42) disposed about the drive coil. The drive coil (14) is wound about the lamp (12,12′), which has a neon or other ionizable gas fill that provides a visible plasma discharge upon energization by the drive coil. The flux concentrator (22,42) can comprise a sleeve (24,44) of magnetically permeable material, such as ferrite, which confines the magnetic field generated by the drive coil (14). The flux concentrator (42) can include an end piece (46) that further confines the magnetic field at one end of the drive coil and c include a core piece (48) that extends into a central recess (50) within the lamp (12′) to concentrate the magnetic flux at a particular region within the lamp where the plasma discharge is primarily located. Also disclosed is an automotive lamp assembly (60) that incorporates the flux concentrator (22) along with an d.c. to a.c. inverter circuit (64), an r.f. shield (80), and a heat sink (106).
Abstract:
A high-frequency energy supply device has a group of side resonators which are electrically connected in a practically annular form, and supply high-frequency energy using resonant high-frequency electromagnetic fields generated in the center portion; and a plurality of high-frequency coupling part for coupling a plurality of high frequency energies propagated from a plurality of high-frequency propagation paths to said group of side resonators; wherein a plurality of high frequencies coupled to said group of side resonators from said plurality of high-frequency coupling means have phases and/or frequencies different from each other.
Abstract:
A plasma display panel of a matrix display type, having a first electrode and a second electrode which constitute a main electrode pair, the first electrode and the second electrode being covered with an insulating layer against a discharge gas, wherein the insulating layer comprises a magnesium oxide film formed at least as a surface layer thereof which is in contact with the discharge gas, the magnesium oxide film having an impedance in the range of 230 to 330 k&OHgr;/cm2 at a frequency of 100 Hz.
Abstract translation:一种矩阵显示型等离子体显示面板,具有构成主电极对的第一电极和第二电极,第一电极和第二电极被绝缘层覆盖在放电气体上,其中绝缘层包括镁 至少形成为与放电气体接触的表面层的氧化膜,氧化镁膜的频率为100Hz时的阻抗在230〜330kΩ/ cm 2的范围内。
Abstract:
An electrodeless lighting system which is emitting light using microwave generated in a magnetron comprises: a main case including a waveguide through which microwave is transmitted, a resonator coupled to an exit of the waveguide, and a bulb located in the resonator; a subsidiary case including a magnetron generating the microwave, and a high voltage generator for providing the magnetron with high voltage; and a microwave transmission cable connected from the magnetron to the waveguide for transmitting the microwave, whereby the emitting portion can be minimized by separating components which are not really needed for emitting, and lowering of performance and damage of the bulb or the resonator by infiltration of impurities such as dust can be prevented.
Abstract:
An electrodeless discharge lamp apparatus includes an electrodeless discharge lamp, a microwave resonator, and a microwave coupler. The microwave resonator includes a conductive reflecting mirror having an opening, a conductive shield, and two opposing external electrodes provided substantially on a central axis of the reflecting mirror. The electrodeless discharge lamp is disposed between the opposing external electrodes. The focal point of the reflecting mirror is positioned between the opposing external electrodes. When microwave energy is supplied to the microwave resonator via the microwave coupler, a microwave resonant electric field occurs between the opposing external electrodes, whereby discharge of the electrodeless discharge lamp occurs.
Abstract:
Relatively uniform high frequency energy can be applied to a planar or linear discharge space and a more uniform discharge can be produced by using an electrodeless discharge energy supply apparatus which comprises a surface wave transmission line 11 for exciting a surface wave by a high frequency, the surface wave transmission line 11 being formed from a conductive material having a periodic array of corrugations 14, wherein using the surface wave produced in the vicinity of the surface wave transmission line 11, energy necessary to produce an electrodeless discharge is supplied to an electrodeless discharge tube 12.
Abstract:
A screen (49) including mesh portions (47 and 48) for a discharge lamp (46) bears a protective coating which inhibits degradation of the screen under lamp operating conditions. The coating does not absorb microwave energy, is transparent or reflective to visible light, and is capable of protecting the screen for at least several thousand hours of operation without substantial oxidation or tarnishing of the screen. The coating remains on the screen at screen temperatures above about 300 degrees C, and the coating does not significantly crack as the screen heats and cools. The coating may include, for example, a solgel deposited single phase or two phase glass.
Abstract:
An electrodeless discharge lamp with a first coupling member includes a translucent discharge vessel in which a discharge gas is enclosed. A bobbin that includes a coil holding part for an induction coil and a vessel mounting part with a second coupling member is formed as a single piece. The coil holding part holds the induction coil on an outer surface thereof and is placed in proximity to the discharge vessel. The first and second coupling members are complementary and engage to mount the discharge vessel on the vessel mounting part of the bobbin to assure a long life and a positioning accuracy of the discharge vessel and the induction coil thereof.