摘要:
The invention relates to a metal halide lamp which is provided with a discharge vessel having a ceramic wall and enclosing a discharge space. Two electrodes having tips at a mutual distance EA are positioned in the discharge space, which contains besides Xe also an ionizable filling with NaI and CeI3. The discharge vessel has an internal diameter Di at least over the length EA. According to the invention it holds that Di ∫ 2 mm and also that the relation EA/Di ∫ 5 is complied with.
摘要:
An image projection apparatus includes a light source configured to cause a light-emitting material to emit light by an electric discharge between a pair of electrodes; an image forming unit configured to form an image by modulating intensity of the light emitted from the light source; a receiving unit (61) configured to receive a power-off input that triggers stopping power supply to the image projection apparatus; and an electric-power control unit (62) configured to increase electric power supplied to the electrodes before stopping power supply to the image projection apparatus when the receiving unit (61) receives the power-off input.
摘要:
An object is to provide a method for manufacturing a high-pressure discharge lamp (500) of the double-ended type having excellent resistance to high pressure and wherein the internal diameter (W) of the portion where the light-emitting section and side tube are adjacent can be reduced without restricting the maximum diameter (L) of the electrode on the side where it projects into the light-emitting section (3). An electrode assembly (105) is arranged within evacuated a glass bulb (2) such that the end of the electrode (102) where a coil (102b) is wound onto it is positioned within the light-emitting section (3). In this condition, the portion where the light-emitting section (3) and the side tube (4a,4b) are adjacent is heated by a burner (300). The internal diameter of the side tube (4a,4b) can thereby be formed with reduced-diameter section (7) which is not smaller than that of the electrode rod (102a) without restricting the diameter at the location of coil (102b).
摘要:
The invention relates to a metal halide lamp which is provided with a discharge vessel having a ceramic wall and enclosing a discharge space. Two electrodes having tips at a mutual distance EA are positioned in the discharge space, which contains besides Xe also an ionizable filling with NaI and CeI3. The discharge vessel has an internal diameter Di at least over the length EA. According to the invention it holds that Di ∫ 2 mm and also that the relation EA/Di ∫ 5 is complied with.
摘要:
A power supply for use in an accelerated weathering test apparatus can ignite the lamp without using a separate igniter and control both the xenon lamp radiated spectrum and its intensity in order to fully simulate the sun's daily cycle, improve the ultraviolet output, reduce the infrared radiation, and compensate for the xenon lamp aging.
摘要:
A deflection component for a luminaire is hollow and consists of two sections, of which a first section is parallel to the axis and a second section in contrast runs obliquely outwards.
摘要:
A high-pressure discharge lamp, a high-pressure discharge lamp operating device using the same, and a headlamp device for automobiles are disclosed. No mercury is used substantially and the discharge flickering is reduced. The high-pressure lamp comprises a discharge vessel 1 having a gas-tight vessel 1a in which a discharge space 1c is defined and a pair of electrodes 2, 2 disposed at both ends of the discharge space 1c, opposed to each other, and spaced by a distance of 5 mm or less and a discharge medium sealed in the gas-tight vessel 1a, containing no Hg, but containing halogenides of luminescent metals including at least two kinds of iodides of Na, Sc, and rare earth metals and Xe under three or more atmospheres. The high-pressure discharge lamp is operated with a lamp power of 50 W or less during stable operation. The lamp satisfies mathematical formula 1 T2/A>1011 expressing the relationship between the electrode temperature T °C during stable operation at a point 0.3 mm away from the end of the electrode 2 toward the root and the amount of free iodine produced A mol/cc when the lamp is turned off after a 100-hour operation.