Abstract:
The present invention relates to a fluorescent lamp including a visible radiation and/or UV-radiation transmissive discharge vessel, at least one luminescent layer coated onto the inner wall of the discharge vessel for converting UV-radiation to other wavelengths of UV-A, UV-B and/or visible radiation characterized in, that at a section to which no luminescent layer is applied on the inner surface area of said discharge vessel at least one substrate layer is applied on the outer surface of this area of said discharge vessel, and/or at least a section to which luminescent layer is applied on the inner surface area of said discharge vessel at least one substrate layer is applied on the outer surface of this area of said discharge vessel; whereby said substrate layer comprises at least one volatile organic material being releasable over an extended time period, whereby the volatile organic material is released by UV-radiation and/or thermal heat generated from said fluorescent lamp and, whereby at operation the temperature of the outer surface of the discharge vessel of said fluorescent lamp is ≦̸70° C.
Abstract:
The invention relates to a discharge lamp comprising a group IVB monoxide radiation emitting material, which allows to greatly improve the features of the lamp due to the superior light emitting properties of the monoxide compound.
Abstract:
The invention relates to a discharge lamp comprising a group IVB monoxide radiation emitting material, which allows to greatly improve the features of the lamp due to the superior light emitting properties of the monoxide compound. Furthermore the discharge lamp has electrodes, whose material comprises iridium and/or tungsten.
Abstract:
The invention relates to a discharge lamp comprising a group IVB monoxide radiation emitting material and a non-metal oxygen donator material, which allows to greatly improve the features of the lamp due to the superior light emitting properties of the monoxide compound.
Abstract:
The invention relates to a discharge lamp comprising a low stability halogen donor material. This material may be used to dose halogen, e.g. for formation of volatile metal halides or for controlled dosing of halogen in discharge lamps.
Abstract:
A discharge lamp comprising a light-transmitting discharge vessel enclosing, in a gas-tight manner, a discharge space comprising a mercury- free fill, the mercury- free fill comprising a molecular radiator compound, selected from the group of metal halides of ruthenium(III), osmium(III,IV), rhodium(III) and rhenium(III), wherein the halide is selected from the group of chloride, bromide and iodide and combinations thereof, and a buffer gas for aiding in starting and buffering the discharge, the discharge lamp further comprising discharge means for igniting and maintaining a discharge in the discharge space emits radiation in the visible range as well as possibly in the UVA range. The visible radiation spectrum is of the cold- white type, while radiation in the UV range is reduced in comparison to mercury-dosed lamps. Losses in visible light, e.g. by Stokes' shift, are thereby reduced and less energy is wasted by radiative output in the ultraviolet. Another advantage of this lamp technology is that it does not require the use of mercury vapor, which is an environmentally hazardous material with known human toxicity. It is therefore environmentally safe.
Abstract:
The present invention relates to a fluorescent lamp including a visible radiation and/or UV-radiation transmissive discharge vessel, at least one luminescent layer coated onto the inner wall of the discharge vessel for converting UV-radiation to other wavelengths of UV-A, UV-B and/or visible radiation characterized in, that at a section to which no luminescent layer is applied on the inner surface area of said discharge vessel at least one substrate layer is applied on the outer surface of this area of said discharge vessel; and/or at least a section to which luminescent layer is applied on the inner sur face area of said discharge vessel at least one substrate layer is applied on the outer surface of this area of said discharge vessel; whereby said substrate layer comprises at least one volatile organic material being releasable over an extended time period, whereby the volatile organic material is released by UV-radiation and/or thermal heat generated from said fluorescent lamp and, whereby at operation the temperature of the outer surface of the discharge vessel of said fluorescent lamp is = 70° C.
Abstract:
An optical sensor (600) for detecting the movement of an object relative to the position of the optical sensor (600),using self-mixing interference,is described. The optical sensor (600) comprises a laser (100), a detector (200) and a filter device (500). The filter device (500) suppresses measurement signals generated by means of the detector (200) whenmovements of the object ata velocity below a defined threshold value cause the measurement signals. The optical sensor (600) may be used in a switch in order to enable selective switching depending on the velocity of the movement of the object.
Abstract:
The invention relates to a mercury- free molecular discharge lamp (30), which comprises: a light-transmitting discharge vessel (32) enclosing, in a gastight manner, a discharge space comprising a gas filling (34). The mercury- free molecular discharge lamp further comprises discharge means (36) for maintaining a discharge (38) in the discharge space, and discharge- variation means (40, 42) for varying, in operation, a position of the discharge within the gas filling relative to each other, and/or for varying a dimension of the discharge within the gas filling over time. An effect of the varying of the position and/or dimension of the discharge over time is that at a specific variation- speed or variation-frequency the output power and/or luminous flux of the mercury- free molecular discharge lamp is substantially increased. This effect is found to be depending on the gas filling and on the variation- speed and/or variation- frequency.
Abstract:
The invention is a discharge lamp comprising a halogen selected from the group consisting of fluorine F, chlorine Cl, bromine Br, and iodine I; a transitional metal selected from Group IVB, VB, VIB or VIIB of the periodic table, and sulfur. The presence of the sulfur in the lamp causes an increase in the radiation emitted in the green and/or red radiation bands, thereby improving the spread of colors emitted by such a lamp. This effect is believed to be due to the presence of sulfides of the transitional metal selected from Group IVB, VB, VIB or VIIB in the discharge space. This effect may be utilized in both low- pressure and high-pressure operating modes.