Abstract:
A compact pulsed optical source of near to ultraviolet wavelength energy adapted to be connected to an external power source (55) includes a device (20) for emitting photons, apparatus (30) for transforming photons into photoelectrons, apparatus (40) for multiplying the photoelectrons, a lens (90), a phosphor coated anode (70), circuit apparatus (100) for providing a pulsed electric signal and first (50) and second (60) biasing apparatus. The emitting device (20) impinges photons on the photon transforming apparatus (30) which accelerates electrons to the multiplying apparatus (40) as pulses are received from the circuit apparatus which relates the multiplying apparatus to the transforming apparatus. With each pulse, a cloud of electrons (42) is emitted from the multiplying apparatus (40) and excites the phosphor coated anode (70) thereby causing optical emission.
Abstract:
The lamp shown herein is a beam mode fluorescent lamp for general lighting applications. The lamp comprises a light transmitting envelope (31), having a phosphor coating (37) on its inner surface, enclosing a pair of thermionic electrodes (33, 34) and a fill material, such as mercury, which emits ultraviolet radiation upon excitation. During application of the first polarity of an AC signal, one electrode acts as a cathode and the other electrode functions as an anode. During the other AC polarity, the electrodes (33, 34) reverse their functions. This invention reduces the requirement for input power to a beam mode discharge lamp without adversely affecting luminous output. This lamp substantially eliminates wasted electron bombardment energy to the anode by use of this energy to help heat the cathode for the next half of the AC cycle. This lamp employs a single power source (9) and may be used in various pre-heat or rapid start configurations.
Abstract:
Изобретение относится к области электроники, а именно к вакуумным триодам, позволяющим коммутировать большие токи малыми напряжениями, и, которые используют полевые (холодные) катоды. Оно может применяться в элементах функциональной электроники: усилителях, генераторах, формирователях коротких высоковольтных импульсов и т.д. Элементы функциональной электроники на основе этого устройства найдут применение в бытовой технике, автомобилестроении, плазмохимии, энергетике, авиационной, ракетной технике и т.д. В предложенном способе управления автоэмиссионным током лампы изменяют величину поля около катода путем изменения расстояния между катодом и анодом. В автоэмиссионной лампе, содержащей анод и автоэмиссионный катод, расположенные друг относительно друга на небольшом расстоянии, автоэмиссионный катод выполнен в виде многоострийного источника электронов, представляющего собой поверхность с регулярными микронными выступами, имеющими удельное омическое сопротивление на несколько порядков выше удельного сопротивления металлов, и установленный на элементе, изменяющим геометрические размеры под действием подведенной энергии. Технический результат заключается в повышении надежности управления работой лампы за счет гальванической развязки входных цепей управления и выходных цепей автоэмиссионной лампы, повышении коэффициентов усиления по мощности, напряжению и току, увеличении допустимого диапазона напряжений, токов и мощностей.
Abstract:
Method and device for the production of photons (7), in the ultraviolet wavelength range, comprising the implantation in a solid matrix of inert or respectively matrix-insoluble gas ions, the excitation of the gas imprisoned (2) in the solid matrix, and the emission of said photons (7) by the excited gas, as well as in particular the ionic bombardment of a surface of the solid matrix by low energy ions of at least one gas such as afore-mentioned, and the low energy electronic bombardment (4) of the solid matrix with emission of the photons (7).
Abstract:
A backlight (110) for a color liquid crystal display (28) uses various techniques for activating colored phosphors (310), which emit colored light to each one of several sub-pixels (12-18) within a particular liquid crystal display pixel. Activation of the colored (310) phosphors may be performed using field emission devices, both diode and triode, a fluorescent lamp, thin film electroluminescent light, an ultraviolet lamp, a thermionic emitter, or a high-intensity glow discharge lamp. LCD panels are manufactured using less than four glass substrates.
Abstract:
PURPOSE:To reduce power capacity and enable low voltage operation by arranging a number of hollow cathodes in a tube bulb and time-sharingly performing discharge radiation to a discharge path between each hollow cathode and anode. CONSTITUTION:When a pulse signal is sequentially output from switching element control circuits O1 to O7, only a transistor 4a turns on for hours t1 and t2 and the power voltage from a power circuit 5 is applied to the discharge path between a hollow cathode 2a and a cathode 3 and then the discharge path performs discharge radiation. Then the discharge radiation is generated between each of hollow cathodes 2b to 2g and the cathode 3 in the same way. The front of a tube bulb 1 looks as if it emitted light uniformly by subsequently and repeatedly performing the discharge radiation with high speed. Since a single picture element display is performed by sequentially and alternately peforming discharge every seven hollow cathodes 2a to 2g radiation, the capacity of a power supply can be reduced and low voltage discharge can be made possible by afterglow.
Abstract:
A Far UV C excimer bulb assembly including an excimer bulb, and a curved filter external to and separated from the excimer bulb. The curved filter being hafnium based and including an arc. The excimer bulb emits radiation in a plurality of wavelengths substantially comprising Far UV C. The curved filter having a cut-off wavelength of 234 nm and adapted to block substantially all wavelengths of UV C radiation longer than 234 nm. The excimer bulb is positioned at least partially and centered within the arc so that the majority of the Far UV C wavelengths of radiation pass perpendicularly through the curved filter. The assembly may further include a mirror which may also be curved, and plated onto the exterior surface of the excimer bulb.